Battery pack, seat support mounting structure, and automobile

Abstract

An automobile, on which a seat support mounting structure or a battery pack (10) is mounted. The seat support mounting structure comprises the battery pack (10); the battery pack (10) comprises a battery tray (20); a structural beam (22) is provided on the battery tray (20); the structural beam (22) is adapted to divide the battery tray (20) into battery accommodating spaces (21) and an electrical accommodating space (28); the battery accommodating spaces (21) are isolated from the electrical accommodating space (28); each battery accommodating space (21) accommodates one battery module (30); a power distribution box (40a) is accommodated in the electrical accommodating space (28).

Description

Battery pack, seat support installation structure and automobile

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application filed on September 28, 2023, with application number 202311280122.6 and patent application name “Battery pack, seat support mounting structure and automobile”, and priority to Chinese patent application filed on July 26, 2023, with application number 202310932664.0 and patent application name “Battery pack, seat support mounting structure and automobile”, all contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of automobile technology, and more specifically, to a battery pack, a seat support mounting structure, and an automobile. Background Art

[0004] The battery pack contains various components such as battery modules and distribution boxes, with complex connection relationships and structures. How to improve the safety of the battery pack has always been a problem that needs to be solved.

[0005] Summary of the Invention

[0006] An object of the present application is to provide a battery pack, a seat support mounting structure, and a vehicle.

[0007] According to a first aspect of this embodiment, a battery pack is provided, which includes a battery tray. A structural beam is provided on the battery tray, and the structural beam is suitable for separating the battery tray into a battery accommodating space and an electrical accommodating space. The battery accommodating space and the electrical accommodating space are isolated from each other. The battery accommodating space accommodates a battery module, and the electrical accommodating space accommodates a distribution box.

[0008] Optionally, each of the battery modules includes a plurality of battery cells, and the battery cells are insulated and arranged on the battery tray.

[0009] Optionally, insulating glue is provided between adjacent battery cells; and / or a first insulating layer is provided between the structural beam and the battery cells; and / or a second insulating layer is provided in the distribution box; and / or the battery pack further includes a cold plate, and a third insulating layer is provided between the cold plate and the battery cells.

[0010] Optionally, the upper surface and / or lower surface of the cold plate are both flat.

[0011] Optionally, the cold plate includes: a flow channel plate, a sealing plate and a support member, the two sides of the flow channel plate in the thickness direction are respectively a first side plate and a second side plate, the first side plate has a protrusion, the protrusion and the second side plate jointly define a flow channel, the sealing plate is arranged on the side of the flow channel plate close to the first side plate, and the support member is supported between the flow channel plate and the sealing plate.

[0012] Optionally, the flow channel plate includes a flow channel area and a non-flow channel area, the non-flow channel area is arranged around the flow channel area on the outer peripheral side of the flow channel plate, the flow channel area is provided with a flow channel, and the non-flow channel area is not provided with a flow channel; the support member is a frame-shaped structure, and the support member is arranged in the non-flow channel area.

[0013] Optionally, the battery module includes at least one group of a first battery module and a second battery module; the distribution box includes a first distribution box and a second distribution box; the first distribution box is connected in series between the first battery module and the second battery module, the second distribution box is used to output electrical energy to the outside, and the second distribution box is connected to the first distribution box; the first distribution box is used to respond to the signal of the second distribution box to connect or disconnect the first battery module and the second battery module.

[0014] Optionally, the first distribution box includes a first switch module, which is connected in series between the first battery module and the second battery module and is communicatively connected to the second distribution box. The first switch module is used to respond to a signal from the second distribution box to connect or disconnect the first battery module and the second battery module.

[0015] Optionally, the first distribution box further includes a second switch module, which is connected in series between the first battery module and the second battery module, and the second switch module is adapted to be disconnected after a preset parameter reaches a threshold.

[0016] Optionally, the battery pack also includes a battery wiring harness; the structural beam has a receiving groove on the side away from the battery tray, the opening side of the receiving groove is arranged away from the battery tray, and the battery wiring harness is accommodated in the receiving groove and insulated from the structural beam.

[0017] Optionally, the battery pack further includes a container, the battery wiring harness is accommodated in the container, the container is accommodated in the accommodating groove, the container is a groove-shaped component, and the opening side of the container and the opening side of the accommodating groove face the same direction.

[0018] Optionally, the battery pack contains a plurality of battery modules, and two battery modules or the battery module and the distribution box are connected through a bus, and the bus includes a first connecting portion, a first bending portion, a third transition portion, a second bending portion and a second connecting portion arranged in sequence, the first bending portion has a plurality of metal sheets arranged in sequence along the thickness direction of the first bending portion, and the second bending portion has a plurality of metal sheets arranged in sequence along the thickness direction of the second bending portion, wherein the first connecting portion and the first bending portion are located at one end of the first direction of the third transition portion, and the second bending portion and the second connecting portion are located at one end of the second direction of the third transition portion, and the first direction intersects with the second direction.

[0019] Optionally, the battery pack further includes a sealing cover for sealing the battery tray, and a supporting component is provided on the battery tray; the battery pack further includes an adapter, and the two bus bars are connected via the adapter, wherein the connection between one of the bus bars and the adapter and the connection between the other bus bar and the adapter are both located on the side of the supporting component facing the sealing cover.

[0020] Optionally, one of the two busbars is a first connecting member, and the other busbar is a second connecting member; the first connecting member is provided with a first positioning hole; the second connecting member is provided with a second positioning hole; the adapter is provided with a first boss and a second boss; the first boss corresponds to the shape of the first positioning hole, and the second boss corresponds to the shape of the second positioning hole.

[0021] Optionally, when the first connecting member, the second connecting member and the adapter are connected, there is no overlapping portion between the first connecting member and the second connecting member in the height direction.

[0022] Optionally, the structural beam includes a pallet crossbeam and a pallet longitudinal beam, the pallet crossbeam is provided with a third snap-in slot, and the pallet longitudinal beam is provided with a fourth snap-in slot, and the third snap-in slot of the pallet crossbeam is snap-fitted with the fourth snap-in slot of the pallet longitudinal beam to separate the space inside the battery pack into a plurality of battery accommodating spaces.

[0023] Optionally, the structural beam includes a longitudinal side beam of the pallet, the transverse beam of the pallet has a first exhaust cavity, the longitudinal side beam of the pallet has a second exhaust cavity, the first exhaust cavity is connected to the second exhaust cavity, the battery accommodating space inside the battery tray is connected to the first exhaust cavity, and the second exhaust cavity is connected to the space outside the battery tray.

[0024] Optionally, the structural beam separates the battery tray into a plurality of battery accommodating spaces.

[0025] Optionally, the battery pallet also includes an insulating component, the structural beam includes the pallet cross beam and / or the pallet longitudinal beam, wherein the pallet cross beam and / or the pallet longitudinal beam are provided with an opening, the insulating component is arranged on the pallet cross beam and / or the pallet longitudinal beam and blocks the opening, and the insulating component is used to electrically connect the electrical components in two adjacent electrical accommodation spaces and / or the battery accommodation spaces.

[0026] According to a second aspect of this embodiment, the present application discloses a seat support mounting structure, which includes a seat support and the above-mentioned battery pack, wherein the seat support is connected to the battery pack.

[0027] Optionally, the battery pack further includes a cold plate, the seat support is arranged above the cold plate of the battery pack, and the seat support and the cold plate are adapted to be connected by structural adhesive.

[0028] According to a third aspect of this embodiment, a car is provided, wherein the car is equipped with the above-mentioned battery pack or the above-mentioned seat support member mounting structure.

[0029] The beneficial effect of the embodiment of the present application is that by arranging the distribution box and the battery accommodating space on different sides of the structural beam, the battery modules in the battery accommodating space are prevented from affecting the distribution box, thereby improving the power safety of the battery pack.

[0030] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0032] FIG1 is a schematic structural diagram of a battery pack in an embodiment of the present application.

[0033] FIG2 is a partial enlarged view of point A in FIG1 ;

[0034] FIG3 is a partial enlarged view of point B in FIG1 ;

[0035] FIG4 is a partial enlarged view of point C in FIG1 ;

[0036] FIG5 is a partial enlarged view of point D in FIG1;

[0037] FIG6 is a schematic structural diagram of a battery pack in an embodiment of the present application;

[0038] FIG7 is a partial enlarged view of point E in FIG6 ;

[0039] FIG8 is a schematic structural diagram of a battery pack in an embodiment of the present application;

[0040] FIG9 is a partial enlarged view of point F in FIG8 ;

[0041] FIG10 is a partial enlarged view of point G in FIG8 ;

[0042] FIG11 is a partial enlarged view of point H in FIG8 ;

[0043] FIG12 is a schematic structural diagram of a battery pack in an embodiment of the present application;

[0044] FIG13 is a partial enlarged view of point K in FIG12;

[0045] FIG14 is an exploded view of a battery pack in an embodiment of the present application;

[0046] FIG15 is a perspective view of a sampling bus in an embodiment of the present application;

[0047] FIG16 is a perspective view of a second receiving member in an embodiment of the present application;

[0048] FIG17 is a partial enlarged view of the battery pack in an embodiment of the present application;

[0049] FIG18 is a partial enlarged view of the battery pack at another position in an embodiment of the present application;

[0050] FIG19 is a perspective view of a first connecting member in an embodiment of the present application;

[0051] FIG20 is a front view of the first connecting member in an embodiment of the present application;

[0052] FIG21 is a bottom view of the first connecting member in the embodiment of the present application;

[0053] FIG22 is a perspective view of a second connecting member in an embodiment of the present application;

[0054] FIG23 is a front view of the second connecting member in the embodiment of the present application;

[0055] FIG24 is a bottom view of the second connecting member in the embodiment of the present application;

[0056] FIG25 is a perspective view of an adapter in an embodiment of the present application;

[0057] FIG26 is an exploded view of the electrical connection structure in an embodiment of the present application;

[0058] FIG27 is a perspective view of a battery tray in an embodiment of the present application;

[0059] FIG28 is a front view of a pallet beam in an embodiment of the present application;

[0060] FIG29 is a front view of a longitudinal beam of a pallet in an embodiment of the present application;

[0061] FIG30 is a side view of a pallet beam in an embodiment of the present application;

[0062] FIG31 is a perspective view of a battery tray in an embodiment of the present application;

[0063] FIG32 is a partial enlarged view of point J in FIG31;

[0064] FIG33 is a schematic structural diagram of a pallet beam in an embodiment of the present application;

[0065] FIG34 is a perspective view of a battery pack according to an embodiment of the present application;

[0066] FIG35 is a schematic structural diagram of a battery tray in an embodiment of the present application;

[0067] FIG36 is a schematic structural diagram of a battery tray in an embodiment of the present application;

[0068] FIG37 is an exploded view of the seat support mounting structure in an embodiment of the present application;

[0069] FIG38 is a partial enlarged view of the cold plate in an embodiment of the present application;

[0070] FIG39 is a perspective view of a battery pack according to an embodiment of the present application;

[0071] FIG40 is a schematic structural diagram of a battery tray in an embodiment of the present application;

[0072] FIG41 is a schematic structural diagram of a battery tray in an embodiment of the present application;

[0073] FIG42 is a diagram illustrating the cooperation relationship between the first deformable block, the second deformable block, and the annular sealing gasket in an embodiment of the present application, when the first deformable block and the second deformable block are not deformed;

[0074] FIG43 is a diagram illustrating the cooperation relationship between the first deformable block, the second deformable block, and the annular sealing gasket when the first deformable block and the second deformable block are deformed in the embodiment of the present application;

[0075] FIG44 is another schematic diagram of the dimensional relationship between the first through hole and the first deformable block and the second deformable block in the embodiment of the present application;

[0076] FIG45 is a schematic diagram showing the dimensional relationship between the first through hole and the first deformable block and the second deformable block in an embodiment of the present application;

[0077] FIG46 is a schematic structural diagram of a first through hole in an embodiment of the present application;

[0078] FIG47 is a schematic diagram of a battery pack in an embodiment of the present application;

[0079] FIG48 is an enlarged view of the circled portion M in FIG47;

[0080] FIG49 is a schematic diagram of a battery tray of a battery pack according to an embodiment of the present application;

[0081] FIG50 is a schematic diagram of a first insulating layer of a battery pack according to an embodiment of the present application;

[0082] FIG51 is a schematic diagram of a battery cell and a thermal insulation member of a battery pack according to an embodiment of the present application;

[0083] FIG52 is a schematic diagram of a cold plate of a battery pack according to an embodiment of the present application;

[0084] FIG53 is an enlarged view of the circled portion N in FIG52;

[0085] FIG54 is a schematic diagram of a battery module according to an embodiment of the present application;

[0086] FIG55 is a schematic diagram of a battery module according to an embodiment of the present application from another angle;

[0087] FIG56 is an enlarged view of the Q portion circled in FIG55;

[0088] FIG57 is an exploded view of a cold plate according to an embodiment of the present application;

[0089] FIG58 is a partial cross-sectional view of a cold plate according to an embodiment of the present application;

[0090] FIG59 is a schematic diagram of a bus provided in one embodiment of the present application;

[0091] FIG60 is a schematic diagram of a busbar from another angle provided by an embodiment of the present application;

[0092] FIG61 is a schematic diagram of a bus provided by another embodiment of the present application;

[0093] FIG62 is a schematic diagram of the bending of a busbar provided in one embodiment of the present application;

[0094] FIG63 is a schematic diagram of connecting multiple bus bars according to an embodiment of the present application;

[0095] FIG64 is a schematic diagram of a battery pack provided in one embodiment of the present application;

[0096] FIG65 is an enlarged view of point P in FIG64;

[0097] FIG66 is a schematic diagram of a planar structure of a busbar provided in one embodiment of the present application;

[0098] FIG67 is a schematic diagram of a planar structure of a conductive member provided in one embodiment of the present application;

[0099] FIG68 is a schematic diagram of the planar structure of a connecting member provided in one embodiment of the present application;

[0100] FIG69 is a schematic diagram of a planar structure of a busbar provided in another embodiment of the present application;

[0101] FIG70 is a schematic diagram of a planar structure of a conductive member provided in another embodiment of the present application;

[0102] FIG71 is a schematic diagram of a planar structure of a conductive member provided in another embodiment of the present application;

[0103] Figure 72 is a schematic diagram of the planar structure of a wiring member provided in another embodiment of the present application.

[0104] FIG73 is a schematic structural diagram of an insulation assembly in a battery pack provided by an embodiment of the present application;

[0105] FIG74 is a schematic diagram of a partial structure of an insulation assembly according to an embodiment of the present application;

[0106] FIG75 is a schematic diagram of a partial structure of an insulation assembly according to an embodiment of the present application;

[0107] Figure 76 is a cross-sectional view of the longitudinal side beam of a pallet according to an embodiment of the present application.

[0108] Description of reference numerals:

[0109] Battery pack 10; battery cell 101;

[0110] Battery tray 20; battery accommodation space 21; structural beam 22; electrical accommodation space 28;

[0111] First insulation layer 201; thermal insulation member 202; first thermal insulation section 203; second thermal insulation section 204; fifth insulation layer 205; insulating adhesive 206; battery cell connector 207;

[0112] Tray horizontal side beam 221; second connection hole 2211; exhaust channel 2212; second exhaust hole 2213; first deformation block 2214; second deformation block 2215; third spacing space 2216; weight reduction hole 2217; second through hole 2218;

[0113] Pallet longitudinal side beam 222; first exhaust hole 2221; first through hole 2222; eight-shaped reinforcement rib 2223;

[0114] Tray beam 223; third latch 2231; third vent 2232; first cavity 2233; second cavity 2234; third cavity 2235; first tray beam 2236; first partition space 2237; second tray beam 2238; second partition space 2239;

[0115] Separator body 22301; first insulating member 22303; second insulating member 22304; third through hole 22305; first avoidance area 22306; second avoidance area 22307; stopper 22308; protrusion 22309; first sealing strip 22310; second sealing strip 22312; annular sealing gasket 22313; inner edge 22314; outer edge 22315; wedge block 22316;

[0116] Pallet longitudinal beam 224; fourth bayonet 2241; first receiving member 2242; second receiving member 2243; first bayonet 22431; receiving groove 2244; second bayonet 22441;

[0117] Insulation assembly 22302; first connecting assembly 2251; second connecting assembly 2252; first housing 2253; second housing 2254; accommodating cavity 2255; first connecting section 2256; second connecting section 2257; first extending section 2258; third connecting section 2259; second extending section 2260; first clamping portion 2261; second clamping portion 2262; fourth connecting section 2263

[0118] Bottom plate 23; side beam structure 25; one-way valve 26; explosion-proof valve 27;

[0119] Battery module 30;

[0120] First connecting member 321; first positioning hole 3211; first positioning portion 3212; first transition portion 3213; first bending portion 3214; first connecting portion 3215; first edge 3216;

[0121] Second connecting member 322; second positioning hole 3321; second positioning portion 3322; second transition portion 3323; second bending portion 3324; second wiring portion 3325; second edge 3326; total positive terminal 34; total negative terminal 35;

[0122] Adapter 303; first boss 3031; second boss 3032;

[0123] busbar 304a; first connecting portion 304a1; first bent portion 304a2; third transition portion 304a3; second bent portion 304a4; second connecting portion 304a5; recess 304a6; positioning hole 304a7; fixing hole 304a8; notch 304a9;

[0124] Busbar 304b; conductive member 304b1; protrusion 304b2; top surface 304b3; outer surface 304b4; groove 304b5; bottom surface 304b6; inner surface 304b7; protrusion 304b8; slot 304b9; positioning post 304b10; terminal member 304b11; terminal piece 304b12; retaining portion 304b13; hollow area 304b14; boss 304b15; pre-bent section 304b16; terminal hole 304b17; positioning portion 304b18; positioning hole 304b19; chamfer 304b20;

[0125] Distribution box 40a; first distribution box 40; third auxiliary bus 401; first switch module 403; second switch module 404;

[0126] Second distribution box 41; third main bus 411;

[0127] Front drive plug-in 42; fourth bus 421;

[0128] First transfer row a; second transfer row b; third transfer row c; fourth transfer row d;

[0129] High-voltage connector 51; low-voltage connector 52; sampling line 53; sampling nickel sheet 54; quick-connect connector 55; sampling adapter harness plug 56;

[0130] Cold plate 60; flow channel plate 601; first side plate 602; protrusion 603; second side plate 604; flow channel 605; sealing plate 606; opening 607; support member 608; temperature plate 609; seventh insulation layer 610;

[0131] Seat support 70 ; first seat support 71 ; second seat support 72 ; first fixing member 73 ; second fixing member 74 ; sleeve 75 . DETAILED DESCRIPTION

[0132] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0133] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0134] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0135] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0136] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0137] In the following description, the Z direction refers to the height direction and thickness direction, the X direction refers to the length direction and longitudinal direction, and the Y direction refers to the width direction and transverse direction.

[0138] As shown in Figures 1 to 72, according to one aspect of an embodiment of the present application, a battery pack 10 is provided, which includes a battery tray 20. A structural beam 22 is provided on the battery tray 20. The structural beam 22 is suitable for separating the battery tray 20 into a battery accommodating space 21 and an electrical accommodating space 28. The battery accommodating space 21 and the electrical accommodating space 28 are isolated from each other. The battery accommodating space 21 accommodates a battery module, and the electrical accommodating space 28 accommodates a distribution box 40a.

[0139] To further illustrate, the battery tray 20 is provided with a structural beam 22, which separates multiple battery accommodating spaces 21 and electrical accommodating spaces 28 on the battery tray 20. The battery accommodating spaces 21 and electrical accommodating spaces 28 are separated and independent of each other. A battery module 30 is placed in each battery accommodating space 21, and each battery module 30 is separated by the separated battery accommodating spaces 21. If any battery module 30 experiences thermal runaway, it will not affect other battery modules 30, thereby improving the electrical safety of the battery pack 10.

[0140] In addition, in one embodiment of the present application, as shown in Figure 1-76, the battery tray 20 includes a bottom plate 23 and a structural beam 22 arranged on the bottom plate 23. The structural beam 22 includes a side beam structure 25, and the side beam structure 25 includes at least two tray transverse side beams 221 and at least two tray longitudinal side beams 222. The tray transverse side beams 221 and the tray longitudinal side beams 222 are connected end to end in sequence to form a frame structure. The frame structure is connected to the bottom plate 23 to form the battery tray 20. Among them, the structural beam 22 is suitable for separating the battery tray 20 into a battery accommodating space 21 and an electrical accommodating space 28. Specifically, the tray transverse side beams 221 and / or the tray longitudinal side beams 222 define an electrical accommodating cavity 28, and the battery accommodating space 21 is formed by the tray transverse side beams 221, the tray longitudinal side beams 222 and the bottom plate 23. The design of the above-mentioned battery accommodating space 21 and the electrical accommodating space 28 can improve the integration rate within the battery pack and improve the volume utilization and energy density of the battery pack.

[0141] Furthermore, the structural beam 22 further includes a pallet cross beam 223 and / or a pallet longitudinal beam 224. The pallet cross beam 223 and / or the pallet longitudinal beam 224 are located in the space enclosed by the pallet transverse side beam 221, the pallet longitudinal side beam 222 and the bottom plate 23 and divide the space into a plurality of battery accommodating spaces 21.

[0142] In another embodiment of the present application, the battery tray 20 has the same structure as the above embodiment, except that the structural beam 22 further includes a tray cross beam 223 and / or a tray longitudinal beam 224. The tray cross beam 223 and / or tray longitudinal beam 224 can separate the space enclosed by the tray transverse side beams 221, the tray longitudinal side beams 222, and the bottom plate 23 into a battery storage space 21 and an electrical storage space 28. The battery storage space 21 is used to accommodate battery modules, and the electrical storage space 28 is used to accommodate electrical components such as the distribution box 40a and the BMS.

[0143] To further explain, the battery pack 10 also includes a distribution box 40a, which is placed in the electrical accommodation space 28, wherein the distribution box 40a and the battery module are separated. When the battery module 30 located in the battery accommodation space 21 has thermal runaway, it will not affect the distribution box 40a placed in the electrical accommodation space 28, so as to ensure that the distribution box 40a can work normally and will not be affected by the battery module 30, so as to improve the electrical safety of the battery pack 10.

[0144] Optionally, each battery module includes a plurality of battery cells 101 , and the battery cells 101 are insulated and arranged on the battery tray 20 .

[0145] Optionally, insulating glue is provided between adjacent battery cells 101; and / or a first insulating layer 201 is provided between the structural beam 22 and the battery cell 101; and / or a second insulating layer is provided in the distribution box 40a; and / or the battery pack 10 also includes a cold plate 60, and a third insulating layer is provided between the cold plate 60 and the battery cell 101.

[0146] As shown in Figures 47-56 , a first insulating layer 201 is provided on the inner wall of the battery tray 20. Multiple battery cells 101 are arranged within the battery tray 20, with a thermal insulator positioned between at least two adjacent battery cells 101. Cell connectors 207 are used to electrically connect different electrical components. Insulating adhesive 206 covers a portion of the surface of at least one cell connector 207.

[0147] For example, in the examples of Figures 47-50, multiple battery cells 101 are arranged sequentially in the battery tray 20 along the length of the battery tray 20. A thermal insulator is provided between two adjacent battery cells 101 to block heat transfer between the two adjacent battery cells 101. This prevents heat from being transferred to adjacent battery cells 101 after thermal runaway of a single battery cell 101, thereby preventing the entire battery pack 10 from catching fire, thereby improving the safety of the battery pack 10.

[0148] The inner wall of the battery tray 20 can be understood as the wall on the side of the battery tray 20 facing the battery accommodating space 21 in the battery pack 10. For example, when the battery pack 10 has a battery accommodating space 21 for accommodating battery cells 101 and / or an electrical accommodating space 28 for accommodating a distribution box 40a, the inner wall includes the wall of the battery tray 20 that defines the battery accommodating space 21 and / or the wall of the battery tray 20 that defines the electrical accommodating space 28.

[0149] By providing a first insulating layer 201 on the inner wall of the battery tray 20 facing the battery cell 101 , the insulation of the battery tray 20 is improved, which can further prevent the battery pack 10 from arcing and catching fire, thereby further improving the safety of the battery pack 10 .

[0150] For example, in the examples of Figures 54-56 , the cell connector 207 is at least partially coated with insulating adhesive 206. For example, the insulating adhesive 206 may be coated only at the connection with the cell 101, i.e., the high-voltage area of ​​the battery pack 10; alternatively, the insulating adhesive 206 may be coated on the outer circumference of the cell connector 207. As a supplement to the first insulating layer 201, the insulating adhesive 206 can further enhance the insulation and thermal insulation performance of the battery tray 20, further improving the safety of the battery pack 10.

[0151] It should be noted that the electrical components may include a battery cell 101, a battery module 30 having multiple battery cells 101, a distribution box 40a, and a battery management system (BMS). The different electrical components electrically connected by the battery cell connector 207 may be battery cells 101 and battery cells 101, or battery cells 101 and battery modules 30, battery modules 30 and distribution box 40a, or battery modules 30 and BMS.

[0152] It should be noted that, since the cell connector 207 needs to leave the contact position for electrical connection with the electrical component uncovered by the insulating glue 206, the insulating glue 206 covers part of the surface of the cell connector 207 but not the entire surface; for example, the insulating glue 206 covers part of the surface of the cell connector 207. For example, for the cell connector 207 that electrically connects the cell 101 to the cell 101, for example, the insulating glue 206 may only cover the vicinity of the electrical connection between the cell connector 207 and the pole of the cell 101 (the electrical connection contact position is not covered); or, the insulating glue 206 may cover the entire surface of the cell connector 207 except the electrical connection contact position. The insulating adhesive 206 covers a portion of the surface of at least one cell connector 207. It can be understood that when there is only one cell connector 207, the insulating adhesive 206 covers a portion of the surface of that cell connector 207. When there are multiple cell connectors 207, the insulating adhesive 206 covers a portion of the surface of one or more cell connectors 207. The insulating adhesive 206 can further enhance the insulation and thermal insulation properties of the battery pack 10, thereby further improving the safety of the battery pack 10.

[0153] According to the battery pack 10 of the embodiment of the present application, a thermal insulation member 202 is provided between at least two adjacent battery cells 101, and a first insulating layer 201 is provided on the inner wall surface of the battery tray 20, and the battery cell connections are wrapped with insulating glue 206, thereby improving the safety of various parts of the battery pack 10, such as the insulation between the battery tray 20 and the battery cells 101, between the battery tray 22 and the battery cell connector 207, and between the battery cell connector 207 and the battery cell connector 207, as well as the thermal insulation between the battery cells 101, thereby improving the overall reliability of the battery pack 10, and further avoiding thermal runaway of a certain battery cell 101, which may cause the battery pack 10 to arc and catch fire as a whole, thereby greatly improving the safety of the battery pack 10.

[0154] According to some embodiments of the present application, the battery tray 20 includes at least one battery accommodating space 21 and at least one electrical accommodating space 28. The battery cells 101 are disposed in the battery accommodating space 21. A distribution box 40a is disposed in the electrical accommodating space 28. A first insulating layer 201 is provided on the inner wall of the battery tray 20 facing the distribution box 40a and the inner wall of the battery tray 20 facing the battery cells 101. Referring to Figures 47 and 50, the battery tray 20 is provided with a battery accommodating space 21 and two electrical accommodating spaces 28. The two electrical accommodating spaces 28 are located on both sides of the length direction of the battery tray 20. Multiple battery cells 101 are installed in the battery accommodating space 21. A distribution box 40a is installed in each electrical accommodating space 28. The distribution box 40a is electrically connected to the multiple battery cells 101.

[0155] Specifically, by providing a first insulating layer 201 on the inner wall defining the electrical accommodation space 28, the inner wall of the electrical accommodation space 28 can be insulated and protected, preventing the current generated by the distribution box 40a from being transmitted to the battery tray 20 or the current from catching fire in the distribution box 40a and being transmitted to the battery cells 101, thereby further improving the safety of the battery pack 10. By providing the first insulating layer 201 on the inner wall of the battery tray 20 facing the battery cells 101, the inner wall of the battery accommodation space 21 is insulated and protected, thereby preventing the high-temperature, high-pressure electrolyte from splashing onto the battery tray 20 in the event of a runaway battery cell 101, causing arcing and fire in the entire battery pack 10, thereby further improving the safety of the battery pack 10.

[0156] Furthermore, the battery tray 20 includes a bottom plate 23 and structural beams 22 connected to each other. The bottom plate 23 and the structural beams 22 together define a battery accommodating space 21. A first insulating layer 201 is provided on one side surface of the bottom plate 23 facing the battery accommodating space 21 and on one side surface of each structural beam 22 facing the battery accommodating space 21. The side surface of the bottom plate 23 facing the battery accommodating space 21 and the side surface of each structural beam 22 facing the battery accommodating space 21 constitute at least a portion of the inner wall. Referring to Figure 50, the structural beams 22 connected to each other form a rectangular annular frame, and the bottom plate 23 is provided at one end of the structural beam 22 in the height direction (for example, the up and down direction in Figure 50), thereby defining the battery accommodating space 21. At this time, the inner wall of the battery accommodating space 21 includes the side surface of the bottom plate 22 facing the battery accommodating space 21 and the side surface of each structural beam 22 facing the battery accommodating space 21. The bottom plate 23 and the structural beam 22 are both provided with a first insulating layer 201 on the side surface facing the battery accommodating space 21, which improves the insulation of the surface of the battery tray 20 facing the battery accommodating space 21, thereby effectively preventing the battery pack 10 from arcing and catching fire as a whole, and further improving the safety of the battery pack 10.

[0157] Furthermore, the structural beams 22 divide the space within the battery tray 20 into multiple battery accommodating spaces 21. A second insulating layer is provided on the surface of the structural beams 22 facing the battery accommodating spaces 21. This arrangement separates the multiple battery cells 101 within the battery tray 20, improving the insulation between the battery tray 20 and the battery cells 101. This prevents excessive number of battery cells 101 in each battery accommodating space 21, which would increase heat in the battery accommodating space 21. This prevents arcing and fire in the battery pack 10 as a whole, greatly improving the safety of the battery pack 10.

[0158] According to some specific embodiments of the present application, with reference to FIG50 , the battery tray 20 includes a plurality of partition beams, which may be tray longitudinal beams 224 and tray transverse beams 223 . The tray longitudinal beams 224 extend along a first direction (e.g., the left-right direction in FIG50 ), and the tray transverse beams 223 extend along a second direction (e.g., the front-back direction in FIG50 ). The tray transverse beams 223 and the tray longitudinal beams 224 divide the battery accommodating space 21 into a plurality of battery accommodating spaces 21 . A plurality of battery cells 101 are respectively disposed in the plurality of battery accommodating spaces 21 , and the plurality of battery cells 101 are arranged along the second direction. The first direction is the length direction of the battery tray 20 , and the second direction is the width direction of the battery tray 20 . Each surface of the tray longitudinal beams 224 and the tray transverse beams 223 facing the battery accommodating space 21 is provided with a second insulating layer.

[0159] The battery tray 20 has a larger length than a width.

[0160] For example, in the example of FIG50 , the multiple partition beams include one tray longitudinal beam 224 and two tray transverse beams 223. The tray longitudinal beam 224 is located at the central axis of the battery accommodating space 21 in the second direction, and the two tray transverse beams 223 are spaced apart along the first direction. The two tray transverse beams 223 and one tray longitudinal beam 224 cooperate to divide the battery accommodating space 21 into six battery accommodating spaces 21, thereby isolating the multiple battery cells 101 within the battery tray 20. This prevents thermal runaway of the battery cells 101 within the battery accommodating space 21 from transferring to adjacent battery accommodating spaces 21, thereby preventing thermal runaway of a battery cell 101 from causing a cascading thermal runaway, and at the same time prevents short circuits between the partition beams and the battery cells 101 or the electrolyte.

[0161] Furthermore, as shown in Figures 27-30, in an optional embodiment, the tray cross beam 223 has a third snap-in slot 2231, and the tray longitudinal beam 224 has a fourth snap-in slot 2241. The third snap-in slot 2231 of the tray cross beam 223 is snap-fitted with the fourth snap-in slot 2241 of the tray longitudinal beam 224 to separate the battery tray 20 into multiple battery accommodating spaces 21.

[0162] To further illustrate, the structural beam 22 also includes a pallet crossbeam 223 and a pallet longitudinal beam 224, both of which are disposed within the battery tray 20. In this embodiment, there are two pallet crossbeams 223, namely a first pallet crossbeam 2236 and a second pallet crossbeam 2238. However, in actual manufacturing, the number of pallet crossbeams 223 and pallet longitudinal beams 224 can be increased or decreased as needed. Taking the connection between the first pallet crossbeam 2236 and the pallet longitudinal beam 224 as an example, the first pallet crossbeam 2236 has a third latch 2231, and the pallet longitudinal beam 224 has a fourth latch 2241. The third latch 2231 of the first pallet crossbeam 2236 engages with the fourth latch 2241 of the pallet longitudinal beam 224, thereby forming a cross-connection between the first pallet crossbeam 2236 and the pallet longitudinal beam 224. This divides the space within the battery tray 20 into multiple battery accommodating spaces 21. This eliminates the need to cut off the first pallet crossbeam 2236 or the pallet longitudinal beam 224, thus enhancing the structural strength of the battery tray 20. Similarly, the third latching opening 2231 of the second pallet crossbeam 2238 engages with the fourth latching opening 2241 of the pallet longitudinal beam 224, again without requiring any cuts. Once the first and second pallet crossbeams 2236, 2238, and pallet longitudinal beams 224 are engaged, multiple battery storage spaces 21 are defined on either side of the pallet longitudinal beam 224.

[0163] Optionally, a thermally conductive structural adhesive can be provided between the bottom of the battery cell 101 and the bottom plate 23 of the battery tray 20. While the battery cell 101 is firmly fixed to the battery tray 20, the heat of the battery cell 101 can be transferred to the bottom plate 23 via the thermally conductive structural adhesive, and then the bottom plate 23 is transferred to the outside world to achieve heat dissipation of the battery pack 10.

[0164] According to some embodiments of the present application, an electrical accommodation space 28 is formed on the structural beam 22, and the inner wall defining the electrical accommodation space 28 is provided with a first insulating layer 201. As shown in FIG50 , an electrical accommodation space 28 is formed on the structural beam 22 located at at least one end in the first direction of the battery tray 20. One end in the first direction of each electrical accommodation space 28 is open, and the distribution box 40a can be installed into the electrical accommodation space 28 through the open side, thereby separating the distribution box 40a in the electrical accommodation space 28 from the battery cells 101 in the battery accommodation space 21. This prevents the high-temperature and high-pressure electrolyte from splashing onto the distribution box 40a after the battery cells 101 run away, causing the distribution box 40a to catch fire, or the distribution box 40a catching fire and causing thermal runaway of the battery cells 101. This prevents the distribution box 40a and the battery cells 101 from interfering with each other, and prevents a short circuit between the distribution box 40a and the battery tray 20, thereby improving the safety of the battery pack 10.

[0165] According to some embodiments of the present application, the first insulating layer 201 is an epoxy resin layer.

[0166] According to some embodiments of the present application, the second insulating layer is an epoxy resin layer.

[0167] Epoxy resin has the advantages of strong adhesion, high structural strength, good heat resistance and electrical insulation. Using an epoxy resin layer as the first insulating layer 201 and / or the second insulating layer can enhance the insulation of the inner surface of the inner circumference of the battery tray 20, thereby improving the safety of the battery pack 10.

[0168] According to some embodiments of the present application, the thickness of the first insulating layer 201 is 0.1 cm-0.5 cm.

[0169] According to some embodiments of the present application, the thickness of the second insulating layer is 0.1 cm-0.5 cm.

[0170] Setting the first insulating layer 201 and / or the second insulating layer within the above-mentioned thickness range can ensure insulation while preventing the second insulating layer from occupying too much space in the battery pack 10 .

[0171] In some optional embodiments, a cold plate 60 is further included. The cold plate 60 is arranged on the top of the battery tray 20. A fifth insulating layer 205 is provided on the side of the cold plate 60 facing the multiple battery cells 101. The fifth insulating layer 205 is the third insulating layer. Water or other liquid with good thermal conductivity is injected into the cold plate 60. The cold plate 60 can absorb the heat generated by the battery cells 101 and transfer it to the surrounding environment, or can transfer the heat of the thermal conductive liquid to the battery cells 101 to regulate the temperature of the battery cells 101 and maintain the temperature of the battery cells 101 stable to ensure that the battery pack 10 can operate normally. By providing the fifth insulating layer 205 on the cold plate 60, the side of the cold plate 60 facing the battery cells 101 can be insulated and protected to prevent current from being transferred to the cold plate 60, thereby improving the safety of the cold plate 60 and thus improving the safety of the battery pack 10.

[0172] According to some embodiments of the present application, both the first insulating layer 201 and the fifth insulating layer 205 are epoxy resin layers. Epoxy resin has advantages such as strong adhesion, high structural strength, good heat resistance, and good electrical insulation. Using epoxy resin layers as the first insulating layer 201 and the fifth insulating layer 205 can enhance the insulation properties of the inner circumference of the battery tray 20 and the inner surface of the cold plate 60, thereby improving the safety of the battery pack 10.

[0173] According to some embodiments of the present application, the thickness of the fifth insulating layer 205 is in the range of 0.1-0.5 cm, thereby ensuring the insulation properties of the first insulating layer 201 and the second insulating layer, thereby improving the safety of the battery pack 10.

[0174] According to some embodiments of the present application, the battery pack 10 includes a plurality of cell connectors 207 that electrically connect the battery cells 101. Insulation adhesive 206 covers a portion of the surface of the cell connectors 207. This prevents short circuits between the cell connectors 207 and other components, thereby improving the stability and safety of the battery pack 10.

[0175] According to some embodiments of the present application, the insulating glue 206 is filled in the battery tray 20 and covers part of the surface of the battery cell connector 207. This can further avoid mutual interference between different electrical components in the battery pack 10 and improve the safety of the battery pack 10.

[0176] Furthermore, as shown in Figures 54 and 55, each battery accommodating space 21 is provided with a plurality of battery cells 101 arranged along the width direction of the battery cell 101. It should be noted that the length direction of the battery cell 101 is greater than its width direction, and the thickness direction of the battery cell 101 is greater than its width direction. The battery cell connector 207 is provided between at least one end of the battery cell 101 in the length direction and the structural beam 22 or the partition beam, and the space between at least one end of the battery cell 101 in the length direction and the structural beam 22 or the partition beam is filled with insulating glue 206. In other words, the battery cell connector 207 is provided between the battery cell 101 and the structural beam 22; or, the battery cell connector 207 is provided between the battery cell 101 and the partition beam. The insulating glue 206 can be filled between the battery cell 101 and the battery cell connector 207, between the battery cell connector 207 and the structural beam 22, or between the battery cell connector 207 and the partition beam, thereby separating the battery cell connector 207 from the battery cell 101, the structural beam 22 or the partition beam, increasing the insulation between the battery cell connector 207 and the battery cell 101, the structural beam 22 or the partition beam, and further improving the safety of the battery pack 10.

[0177] According to some embodiments of the present application, a heat insulator 202 is provided between two adjacent battery cells 101. With this arrangement, a battery cell 101 is provided on both sides of each heat insulator 202 in the thickness direction, thereby separating the two adjacent battery cells 101. This prevents heat from thermal runaway in a single battery cell 101 from transferring to the adjacent battery cell 101, thereby preventing the entire battery pack 10 from catching fire.

[0178] In some optional embodiments, multiple battery cells 101 are configured into multiple battery modules 30, and each battery module 30 includes multiple battery cells 101. For example, in the examples of Figures 47 and 54-56, there are six battery modules 30, and each battery module 30 is arranged in a corresponding battery accommodating space 21. The battery pack 10 includes multiple battery cell connectors 207, and the battery modules 30 are connected between different battery modules 30. In this arrangement, different battery modules 30 are electrically connected using the battery cell connectors 207, ensuring the stability of the electrical connection between the multiple battery modules 30, thereby improving the integrity and usage stability of the battery pack 10.

[0179] In some optional embodiments, the thermal insulation member 202 is an aerogel member or a glass fiber member. Aerogel members have advantages such as low density, high structural strength, and high temperature resistance. Glass fiber members have advantages such as a strong structure, good non-heat resistance, strong corrosion resistance, and good insulation. Using aerogel members or glass fiber members as the thermal insulation member 202 allows for a lightweight design of the battery pack 10, improving the thermal insulation capability of the thermal insulation member 202, while also being relatively low in cost.

[0180] Furthermore, the thermal insulation member 202 includes a first thermal insulation section 203 and two second thermal insulation sections 202. The two second thermal insulation sections 202 are respectively arranged at the two ends of the length direction of the first thermal insulation section 203. The thickness of the first thermal insulation section 203 is greater than the thickness of the second thermal insulation section 202. That is, the middle of the thermal insulation member 202 is thick, and the edges at both ends in the length direction are thin. In this way, the thickness of the edge of the thermal insulation member 202 is reduced, and the thermal insulation member 202 is sealed. While ensuring the thermal insulation effect of the thermal insulation member 202, when the thermal insulation member 202 is damaged, the thermal insulation member 202 can be taken out through the second thermal insulation section 202 to achieve the replacement of the thermal insulation member 202. Optionally, double-sided tape is adhered to the thermal insulation member 202 and connected to the battery cell 101 through the double-sided tape.

[0181] In some optional embodiments, the insulating adhesive 206 is a potting compound. Before curing, the potting compound is in a liquid state, exhibiting fluidity and ease of filling. Once fully cured, the potting compound can provide waterproofing, moisture-proofing, dustproofing, insulation, thermal conductivity, confidentiality, corrosion resistance, temperature resistance, and shock absorption. Therefore, using potting compound as the insulating adhesive 206 can enhance the wrapping of the cell connector 207.

[0182] In the related art, the batteries in the battery pack are exhausted when thermal runaway occurs. If this part of the gas is not discharged from the battery pack, it will affect the safety of other batteries. Therefore, in the embodiments of the present application, as shown in Figures 27-30, the structural beam 22 includes a tray longitudinal side beam 222, the tray cross beam 223 has a first exhaust cavity, the tray longitudinal side beam 222 has a second exhaust cavity, the first exhaust cavity is connected to the second exhaust cavity, the battery accommodating space 21 inside the battery tray 20 is connected to the first exhaust cavity, and the second exhaust cavity is connected to the space outside the battery tray 20.

[0183] Referring to Figures 27 to 30 , the structural beam 22 defines the space within the battery tray 20. In other words, the structural beam 22 serves as the boundary between the interior and exterior of the battery tray 20. In this embodiment, the structural beam 22 includes a pair of longitudinal side beams 222 and transverse side beams 221. The rectangular space enclosed by the connection between the longitudinal side beams 222 and transverse side beams 221 constitutes the interior of the battery tray 20. The structural beam 22 can also include more side beams to form a pentagonal or hexagonal shape, etc., which is not specifically limited in this embodiment.

[0184] To further illustrate, the first tray crossbeam 2236 has a first exhaust cavity and a third exhaust hole 2232. The tray longitudinal side beam 222 has a second exhaust cavity. The first exhaust cavity of the first tray crossbeam 2236 communicates with the second exhaust cavity of the tray longitudinal side beam 222. The third exhaust hole 2232 of the first tray crossbeam 2236 faces the battery accommodating space 21, connecting the battery accommodating space 21 inside the battery tray 20 with the first exhaust cavity, while the second exhaust cavity communicates with the space outside the battery tray 20. This connection can be achieved using exhaust holes or other suitable methods, such as partially opening the exhaust cavity. The exhaust path is indicated by the dashed arrow in Figure 27. Once the batteries contained in the battery accommodating space 21 generate gas, the gas will be discharged from the battery pack 10 through the third exhaust hole 2232, the first exhaust cavity, the second exhaust cavity, and the exhaust channel 2212, thereby improving the safety of the battery pack 10. The communication method between the second pallet cross beam 2238 and the pallet longitudinal side beam 222 is similar to that of the first pallet cross beam 2236 , and therefore will not be described in detail.

[0185] Optionally, the first exhaust cavity includes a first cavity 2233, a second cavity 2234 and a third cavity 2235. The first cavity 2233 and the third cavity 2235 are connected through the second cavity 2234. The width of the second cavity 2234 is smaller than the width of the first cavity 2233. The width of the second cavity 2234 is also smaller than the width of the third cavity 2235. The first cavity 2233 is connected to the battery accommodating space 21.

[0186] As can be seen from Figure 28, the first exhaust cavity includes a first cavity 2233, a second cavity 2234, and a third cavity 2235. The first cavity 2233 and the third cavity 2235 are connected through the second cavity 2234. The width of the second cavity 2234 is smaller than that of the first cavity 2233, and the width of the second cavity 2234 is also smaller than that of the third cavity 2235. The first cavity 2233 is connected to the battery accommodating space 21 through the third exhaust hole 2232 or other suitable structure. The advantage of this structure is that the gas in the battery accommodating space 21 first enters the first cavity 2233 and is then blocked at the second cavity 2234. If the gas pressure entering the first cavity 2233 through a third vent 2232 is high, the gas will first be divided in the first cavity 2233 before passing through the second cavity 2234 and entering the third cavity 2235. This prevents the third cavity 2235 from further squeezing the batteries in the battery accommodating space 21 due to excessive local pressure. The structure of the first cavity 2233, second cavity 2234, and third cavity 2235 of the second tray crossbeam 2238 is similar to that of the first tray crossbeam 2236 and will not be described in detail here.

[0187] Optionally, the pallet cross beam 223 includes a first pallet cross beam 2236 and a second pallet cross beam 2238 , a first spacing space 2237 exists between the first cavity 2233 of the first pallet cross beam 2236 and the pallet longitudinal beam 224 , and a second spacing space 2239 exists between the first cavity 2233 of the second pallet cross beam 2238 and the pallet longitudinal side beam 222 .

[0188] As can be seen from Figures 27 and 28, the difference between the first pallet crossbeam 2236 and the second pallet crossbeam 2238 is that the first cavity 2233 of the first pallet crossbeam 2236 decreases in length toward both ends at the first latch 22431, while the first cavity 2233 of the second pallet crossbeam 2238 decreases in length toward the first latch 22431 at both ends. Therefore, after the first and second pallet crossbeams 2236 and 2238 are connected to the pallet longitudinal beam 224, a first spacing space 2237 exists between the first cavity 2233 of the first pallet crossbeam 2236 and the pallet longitudinal beam 224, and a second spacing space 2239 exists between the first cavity 2233 of the second pallet crossbeam 2238 and the pallet longitudinal side beam 222. To prevent gas leakage within the battery tray 20, the first cavity 2233 of the first tray crossbeam 2236 is sealed at the first compartment 2237, and the first cavity 2233 of the second tray crossbeam 2238 is sealed with a plug at the second compartment 2239. Alternatively, the first cavity 2233 of the first tray crossbeam 2236 at the first compartment 2237 can serve as an open air intake structure, and similarly, the first cavity 2233 of the second tray crossbeam 2238 at the second compartment 2239 can serve as an open air intake structure for gas from the battery accommodating space 21 to enter. In other words, for each battery accommodating space 21, the first partition space 2237 and the second partition space 2239 are arranged diagonally, and the first partition space 2237 and the second partition space 2239 can be used for routing between the batteries in each battery accommodating space 21, and for the tray longitudinal side beam 222, the first tray cross beam 2236 and the second tray cross beam 2238 have different exhaust cross sections at their connecting positions, which is conducive to forming a pressure difference in the second exhaust cavity, so that the high-pressure gas can be more easily discharged into the external environment of the battery pack 10.

[0189] Optionally, the first cavity 2233 of the first pallet cross beam 2236 extends to the pallet longitudinal side beam 222 , and the first cavity 2233 of the second pallet cross beam 2238 extends to the pallet longitudinal beam 224 .

[0190] More specifically, the first cavity 2233 of the first pallet crossbeam 2236 extends to the pallet longitudinal side beam 222, while the first cavity 2233 of the second pallet crossbeam 2238 extends to the pallet longitudinal beam 224. This structure facilitates the formation of the aforementioned pressure difference while ensuring the overall structural strength of the battery tray 20.

[0191] Optionally, the tray longitudinal side beam 222 has a first exhaust hole 2221 , and the first exhaust hole 2221 connects the battery accommodating space 21 inside the battery tray 20 with the second exhaust cavity.

[0192] Optionally, the tray longitudinal side beam 222 has a first vent hole 2221. The first vent hole 2221 connects the battery accommodating space 21 inside the battery tray 20 with the second vent cavity. In this way, some gas can directly enter the second vent cavity and then be discharged to the outside of the battery pack 10.

[0193] Optionally, the distance between the first exhaust hole 2221 and the position where the first exhaust cavity is connected to the second exhaust cavity is smaller than a first threshold.

[0194] To further illustrate, the distance between the first vent hole 2221 and the location where the first vent cavity communicates with the second vent cavity is less than a first threshold value, which can be a suitable value such as 2 cm or 5 cm. In other words, the first vent hole 2221 is closer to the connection between the first pallet crossbeam 2236 (or the second pallet crossbeam 2238) and the pallet longitudinal side beam 222, relative to both ends of the pallet longitudinal side beam 222. This facilitates gas concentration and convergence, preventing excessive gas leaks from forming in the pallet longitudinal side beam 222. It also avoids a reduction in the structural strength of the pallet longitudinal side beam 222, which could squeeze the second vent cavity and cause short venting, because the connection between the first pallet crossbeam 2236 (or the second pallet crossbeam 2238) and the pallet longitudinal side beam 222 has greater structural strength.

[0195] Optionally, below the third bayonet 2231 , the first exhaust cavity is connected.

[0196] It is further explained that below the third snap-in 2231 of the second pallet crossbeam 2238, the first exhaust cavity is connected, so that the high-pressure gas generated by the batteries in the battery accommodating cavity on both sides of the pallet longitudinal beam 224 can be discharged from two directions as shown by the dotted arrows in FIG27, thereby improving the exhaust efficiency.

[0197] Optionally, the pallet cross beam 223 and the pallet longitudinal beam 224 are welded together at the connection point between the third latch 2231 and the fourth latch 2241 .

[0198] Further, at the junction of the third latch 2231 and the fourth latch 2241, the first pallet crossbeam 2236 is welded to the pallet longitudinal beam 224 to improve the connection strength. The welding method of the second pallet crossbeam 2238 to the pallet longitudinal beam 224 is similar to that of the first pallet crossbeam 2236, so it will not be repeated here.

[0199] Optionally, the structural beam 22 further includes a tray transverse side beam 221 , and the tray transverse side beam 221 is provided with an exhaust channel 2212 , which connects the second exhaust cavity with the space outside the battery tray 20 .

[0200] To further illustrate, the structural beam 22 also includes a tray transverse beam 221. The tray transverse beam 221 is provided with an exhaust channel 2212, which connects the second exhaust cavity with the space outside the battery tray 20. A separate explosion-proof valve 27 can be provided at the exhaust channel 2212, or the explosion-proof valve 27 can be formed by locally thinning the tray transverse beam 221. As shown in the gas flow path with an arrow dotted line in Figure 27, the gas generated by the battery in the battery accommodating space 21 enters the first cavity 2233, the second cavity 2234, and the third cavity 2235 of the first exhaust cavity through the third exhaust hole 2232, and then enters the second exhaust cavity, and then is discharged to the external space of the battery tray 20 through the exhaust channel 2212, thereby ensuring the normal air pressure in the battery pack 10.

[0201] Optionally, the tray transverse side beam 221 is further provided with a second exhaust hole 2213 , and the second exhaust hole 2213 connects the exhaust channel 2212 with the battery accommodating space 21 of the battery tray 20 .

[0202] To further explain, the tray transverse side beam 221 is also provided with a second exhaust hole 2213, which connects the exhaust channel 2212 with the battery accommodating space 21 of the battery tray 20, so that part of the gas generated by the battery closest to the tray transverse side beam 221 can be directly discharged to the external space of the battery tray 20.

[0203] At least one of the side beam structure 25 and the tray crossbeam 223 corresponding to each battery accommodation space 21 is provided with a first exhaust port, a second exhaust port, and an exhaust channel 2212 connecting the first and second exhaust ports. The first exhaust port is used to direct gas within the battery accommodation space 21 into the exhaust channel 2212, and the second exhaust port is used to exhaust gas within the exhaust channel 2212. In other words, each battery accommodation space 21 is provided with at least one first exhaust port.

[0204] In one embodiment of the present application, as shown in Figures 31 and 34, the interior of the side beam structure 25 is configured as an exhaust channel 2212, and a first exhaust port is provided on the side of the side beam structure 25 close to the pallet cross beam 223, and a second exhaust port is provided on the side of the side beam structure 25 away from the pallet cross beam 223. The first exhaust port connects the battery accommodating space 21 with the exhaust channel 2212. The first exhaust port is used to introduce gas from the battery accommodating space 21 into the exhaust channel 2212. The second exhaust port is used to discharge gas from the exhaust channel 2212.

[0205] In addition, due to the blocking and heat-insulating effect of the tray crossbeam 223, the high-temperature gas can be spatially and thermally isolated, reducing heat diffusion, thereby preventing the battery module 30 located in other battery accommodating spaces 21 from being affected by thermal runaway, effectively preventing the high-temperature gas from causing secondary damage to the battery module 30 or affecting other battery modules 30.

[0206] Optionally, a top plate is further included, which is sealed to the side beam structure 25 and the tray cross beam 223 so that the battery accommodating space 21 forms a sealed cavity.

[0207] To further illustrate, the battery tray 20 also includes a top plate, which is disposed opposite the bottom plate 23. The side beam structure 25 and the tray cross beam 223 are disposed between the top plate and the bottom plate 23. The top plate covers the battery storage space 21. The top plate is sealedly connected to the side beam structure 25 and the tray cross beam 223 on a side away from the bottom plate 23. The sealing connection is achieved by, for example, welding or bonding, so that the battery storage space 21 forms a sealed cavity.

[0208] The top plate covers the battery accommodating space 21, forming a sealed cavity. If a battery module 30 within a battery accommodating space 21 experiences thermal runaway, the gas generated by the battery module 30 can directly enter the exhaust channel 2212 through the first exhaust port corresponding to the battery accommodating space 21 and then be discharged through the second exhaust port, further improving exhaust efficiency.

[0209] In addition, during the exhaust process, each battery accommodating space 21 is independent of each other, and the exhaust process in the battery accommodating space 21 where the battery module 30 experiencing thermal runaway is located will not affect the battery modules 30 in other battery accommodating spaces 21, thereby improving the safety of the battery modules 30.

[0210] In addition, further, in one embodiment of the present application, as shown in Figure 76, an S-shaped reinforcement rib 2223 is provided inside the longitudinal side beam 222 of the pallet, and the large end formed by the S-shaped reinforcement rib 223 faces the side of the tubular member close to the battery accommodating space 21, and the small end formed by the S-shaped reinforcement rib 2223 faces the side of the exhaust channel away from the battery accommodating space 21.

[0211] Optionally, the first exhaust port is provided with a one-way valve 26 , and the one-way valve 26 is used to guide the gas in the battery accommodating space 21 into the exhaust channel 2212 .

[0212] To further explain, each battery accommodating space 21 is correspondingly provided with at least one one-way valve 26 .

[0213] In this application, an exhaust channel 2212 is provided within the side beam structure 25, and each battery storage space 21 is provided with at least one exhaust port. Each exhaust port is provided with a one-way valve 26. The one-way valve 26 is used to direct the gas within the battery storage space 21 into the exhaust channel 2212.

[0214] By providing a one-way valve 26, it is ensured that the high-temperature gas or electrolyte vapor generated when the battery cell thermal runaway is only discharged from the battery accommodating space 21 into the exhaust channel 2212, and the gas in the exhaust channel 2212 will not flow back into the battery accommodating space 21, thereby improving the exhaust smoothness of the battery tray 20 when the battery cell thermal runaway is in progress, and reducing the possibility of fire and explosion of the package due to poor exhaust and gas leakage.

[0215] In an optional embodiment, the structural beam divides the battery tray 20 into a plurality of battery accommodating spaces 21 ; the positive terminal and the negative terminal of the battery module 30 in each battery accommodating space 21 are arranged diagonally in the battery accommodating space 21 .

[0216] In one embodiment disclosed in the present application, as shown in Figures 57 and 58 , the battery pack further includes a cold plate, which can be disposed within the battery pack. The upper and / or lower surfaces of the cold plate 60 are both flat, thereby ensuring a reliable connection between the battery and the cold plate.

[0217] In order to improve the integration rate of the battery pack, in one embodiment of the present application, the cold plate is a top plate, which is fixedly connected to the battery tray.

[0218] Furthermore, the cold plate 60 includes: a flow channel plate 601, the two sides of the flow channel plate 601 in the thickness direction are respectively a first side plate 602 and a second side plate 604, the first side plate 602 has a protrusion 603, and the protrusion 603 and the second side plate 604 jointly define a flow channel 605; specifically, the two sides of the flow channel plate 601 in the thickness direction are respectively a first side and a second side, the first side has a protrusion 603, for example, the flow channel plate 601 includes a first side plate 1602 and a second side plate 604 arranged in the thickness direction, and the protrusion 603 and the second side plate 604 jointly define the flow channel 605.

[0219] The sealing plate 606 is arranged on one side of the flow channel plate 601 close to the first side plate 602 ; specifically, the sealing plate 606 is arranged on the first side of the flow channel plate 601 , and the positive projection of the sealing plate 606 on the flow channel plate 601 covers at least part of the raised portion 603 .

[0220] The support member 608 is supported between the flow channel plate 601 and the sealing plate 606. Specifically, the support member 608 is supported between the flow channel plate 601 and the sealing plate 606, that is, the support member 608 abuts against the flow channel plate 601 and the sealing plate 606.

[0221] As shown in FIG. 57 and FIG. 58 , the cold plate 60 according to the embodiment of the present application includes a flow channel plate 601 , a sealing plate 606 and a support member 608 .

[0222] Specifically, the two sides of the flow channel plate 601 in the thickness direction are respectively a first side and a second side. For example, the flow channel plate 601 includes a first side plate 602 and a second side plate 604 arranged in the thickness direction, and the first side plate 602 has a protrusion 603. The sealing plate 606 is arranged on the first side of the flow channel plate 601. The support member 608 is arranged between the flow channel plate 601 and the sealing plate 606, and the support member 608 supports the area other than the protrusion 603 on the first side of the flow channel plate 601. In other words, the first side of the flow channel plate 601 has a protrusion 603 (the non-protrusion is the area other than the protrusion 603 on the first side of the flow channel plate 601), and a support member 608 is provided between the non-protrusion and the sealing plate 606, and the support member 608 supports between the non-protrusion and the sealing plate 606. It is understandable that "the support member 608 supports the area outside the raised portion 603 on the first side of the flow channel plate 601" can mean that the support member 608 is supported only between a portion of the non-raised portion and the sealing plate 606, or it can mean that the support member 608 is supported between the entire non-raised portion and the sealing plate 606. In some embodiments, when the raised portion 603 and the side of the support member 608 close to the sealing plate 606 form a surface, the support member 608 supporting the area outside the raised portion 603 on the first side of the flow channel plate 601 means that the surface of the support member 608 close to the sealing plate 606 is at least flush with the surface of the raised portion 603 away from the second side plate 604. For example, the surface of the support member 608 close to the sealing plate 606 can be exactly flush with the surface of the raised portion 603 away from the second side plate 604, or the surface of the support member 608 close to the sealing plate 606 can be slightly higher than the surface of the raised portion 603 away from the second side plate 604.

[0223] The flow channel plate 601 has a flow channel 605. Water or other fluids with good thermal conductivity can be injected into the flow channel 605 of the flow channel plate 601, so that the flow channel plate 601 can absorb the heat generated by the components in contact with it, such as the battery cell, or can transfer the heat of the heat-conducting liquid to the components in contact with it to adjust the temperature of the above components and maintain the temperature of the above components stable. The flow channel plate 601 has a protrusion 603 on the first side. For example, due to weight restrictions, the thickness of the flow channel plate 601 is relatively thin in the area where the flow channel 605 is not provided. In the area where the flow channel 605 is provided, a certain space needs to be reserved for the flow channel 605 inside, so a protrusion 603 is formed at the flow channel. In addition, other components (such as fasteners, etc.) may also form protrusions 603 on the flow channel plate 601.

[0224] The flow channel plate 601 can be integrally formed or can be formed by fixing two independently formed side plates together. For example, in the examples of Figures 57 and 58, the cold plate 60 can be installed above the battery tray 20. At this time, the flow channel plate 601 includes a first side plate 602 and a second side plate 604. The first side plate 602 of the flow channel plate 601 is away from the battery tray 20, and the second side plate 604 of the flow channel plate 601 is close to the battery tray 20. The raised portion 603 of the first side plate 602 extends in a direction away from the second side plate 604. The second side plate 604 can be a flat plate. The raised portion 603 and the second side plate 604 jointly define the flow channel 605. The first side plate 602 and the second side plate 604 are independently formed and fixed together to form the flow channel plate 601.

[0225] Optionally, the orthographic projection of the sealing plate 606 on the flow channel plate 601 covers at least a portion of the raised portion 603. This may be the case where the orthographic projection of the sealing plate 606 on the flow channel plate 601 covers all or a portion of the raised portion 603. "Covering" may mean covering all or a portion of the raised portion 603. Specifically, referring to FIG1 , when the thickness direction of the flow channel plate 601 is aligned with the vertical direction and the first side is above the second side, the sealing plate 606 is located above at least a portion of the raised portion 603. Furthermore, the orthographic projection of the sealing plate 606 on the flow channel plate 601 may also cover areas of the flow channel plate 601 other than the raised portion 603. It should be noted that, since the flow channel plate 601 is not a flat plate, when understanding the meaning of the positive projection of the sealing plate 606 on the flow channel plate 601 , the flow channel plate 601 can be approximately understood as a flat plate that is coplanar with the flat portion of the actual flow channel plate 601 .

[0226] The sealing plate 606 is a plate used by the cold plate 60 to seal with the external structure, and is used to provide a plane for sealing the heat exchange plate 60 with the external structure. For example, the external structure can be a vehicle body. The heat exchange plate 60 is sealed with the vehicle body through the sealing plate 606 to isolate the passenger compartment from the outside and prevent air, water, etc. from entering the passenger compartment.

[0227] The raised portion 603 can be used to form the flow channel 605 of the flow channel plate 601. In this case, the flow channel 605 is formed at the raised portion 603, and the flow channel 605 is arranged corresponding to the raised portion 603; alternatively, the raised portion 603 can also correspond to other structures outside the flow channel 605, which is not particularly limited here.

[0228] For example, when the protrusions 603 are used to form the flow channels 605 of the flow channel plate 601, and the flow channels 605 are formed on the protrusions 603, and the flow channels 605 are arranged corresponding to the protrusions 603, the support members 608 can be arranged in the gaps between the flow channels 605 (not shown); alternatively, the support members 608 can be arranged at the edge of the flow channel plate 601 (as shown in FIG. 57); alternatively, the support members 608 can be arranged in the gaps between the flow channels 605 and at the edge of the flow channel plate 601. The support members 608 can be arranged on the flow channel plate 601 in a staggered manner relative to the flow channels 605. The sealing plate 606 is located on the side of the support members 608 away from the flow channel plate 601.

[0229] In which, the support member 608 is supported between the flow channel plate 601 and the sealing plate 606. It can be understood that the surface of the support member 608 close to the sealing plate 606 is at least flush with the end of the protrusion 603 away from the second side, wherein the surface of the support member 608 close to the sealing plate 606 can be just flush with the end of the protrusion 603 away from the second side, or the surface of the support member 608 close to the sealing plate 606 can be slightly higher than the end of the protrusion 603 away from the second side plate 604.

[0230] The sealing plate 606 is a plate used to seal the cold plate 60 with an external structure, and is used to provide a plane for sealing the cold plate 60 with the external structure. For example, the external structure can be a vehicle body, and the cold plate 60 is sealed with the vehicle body through the sealing plate 606. At this time, in order to ensure the sealing between the sealing plate 606 and the vehicle body, a sealing member, such as sealing foam, can also be provided between the sealing plate 606 and the vehicle body.

[0231] 58 , by ensuring that the surface of the support member 608 proximal to the sealing plate 606 is at least flush with the surface of the protrusion 603 distal to the second side plate 604, the support member 608 can fill the height difference caused by the protrusion 603. In other words, the flow channel plate 601 has a protrusion 603 and a non-protrusion on the first side, with a height difference between the protrusion 603 and the non-protrusion. The provision of the support member 608 can fill the height difference between the protrusion 603 and the non-protrusion. For example, when the flow channel 605 is provided corresponding to the protrusion 603, a height difference is formed between the sealing plate 606 and the first side plate 602 at locations other than the flow channel 605. This height difference can be filled at least at the location where the support member 608 is provided, allowing the sealing plate 606 to fit closely with the support member 608. Thus, by supporting the sealing plate 606 with the support member 608, the flow plate 601 can have a plane sealed with the external structure without making any special changes to the structures of the cold plate 60 and the sealing plate 606 (special changes such as thickening or bending the non-protruding portion of the flow plate 601, or thickening or bending the sealing plate 606 at a position corresponding to the non-protruding portion of the flow plate 601), thereby achieving a sealed connection between the battery pack 10 and the vehicle body.

[0232] According to the cold plate 60 of the embodiment of the present application, a support member 608 is provided between the flow channel plate 601 and the seal, and the surface of the support member 608 close to the sealing plate 606 is at least flush with the surface of the protrusion 603 away from the second side. Therefore, the seal can be installed flatly on the flow channel plate 601 without special design of the structure of the cold plate 60 and the sealing plate 606, thereby increasing the flatness of the sealing plate 606. Therefore, when the battery pack 10 is applied to the vehicle, the contact area between the battery pack 10 and the vehicle body is increased, thereby achieving a sealed connection between the battery pack 10 and the vehicle body.

[0233] In addition, in one embodiment of the present application, the orthographic projection of the sealing plate 606 on the flow channel plate 601 covers at least part of the raised portion 603, that is, the sealing plate 606 can provide more planes for sealing the cold plate 60 with the external structure. By supporting the support member 608 between the flow channel plate 601 and the sealing plate 606, the support member 608 can be used to fill the height difference caused by the raised portion 603, and the sealing plate 606 can be easily installed without the need for special design of the structure of the flow channel plate 601 or the sealing plate 606 (special design, for example, thickening the area of ​​the flow channel plate 601 where the flow channel is not provided, or thickening or bending the sealing plate 606 at the position corresponding to the area of ​​the flow channel plate 601 where the flow channel is not provided). In this way, a sealed connection between the battery pack and the vehicle body can be achieved, and the preparation process of the cold plate 60 can be simplified. Generally speaking, in order to improve the heat exchange efficiency of the heat exchange plate within a limited space, the area of ​​the flow channel plate where the flow channel is provided occupies most of the area of ​​the flow channel plate, leaving only a small area without flow channels or with only a small number of flow channels. The raised parts formed by the flow channels or other components make it difficult to use the area with flow channels to seal with the external structure, and the small area without flow channels or with only a small number of flow channels makes it difficult to provide sufficient area for the heat exchange plate to be fixedly connected and / or sealed with other structures (such as battery trays, vehicle bodies, etc.). According to the cold plate 60 of the embodiment of the present application, by making the orthographic projection of the sealing plate 606 on the flow channel plate cover at least part of the raised portion 603, a support member 608 is provided between the flow channel plate 601 and the seal, and the support member 608 is supported between the flow channel plate 601 and the sealing plate 606. As a result, the seal can be installed flatly on the flow channel plate 601 without the need for special design of the structures of the cold plate 60 and the sealing plate 606, thereby increasing the flatness of the sealing plate 606, thereby increasing the surface area of ​​the cold plate 60 that can be used for sealing with the external structure. When the cold plate 60 is applied to the battery pack of a vehicle, the contact area between the battery pack and the vehicle body is increased, thereby achieving a sealed connection between the battery pack and the vehicle body.

[0234] According to some specific embodiments of the present application, the flow channel plate 601 has a flow channel 605, which is arranged corresponding to the protrusion 603. The corresponding arrangement of the flow channel 605 and the protrusion 603 can be understood as the flow channel 605 being formed at the protrusion 603, and the protrusion 603 can serve as a part of defining the flow channel 605. In this way, the support member 608 can fill the height difference between the flow channel 605 and the non-flow channel area, thereby simplifying the preparation process of the flow channel plate 601 and facilitating the sealed connection between the battery pack 10 and the vehicle body.

[0235] According to some specific embodiments of the present application, referring to Figure 57, the flow channel plate 601 includes a flow channel area and a non-flow channel area, the flow channel 601 includes a flow channel area and a non-flow channel area, the non-flow channel area is arranged around the flow channel area on the outer peripheral side of the flow channel plate 601, the flow channel area is provided with a flow channel 605, the non-flow channel area may be completely without a flow channel, or only with a small number of flow channels, at least a portion of the raised portion 603 corresponds to the flow channel 605, and the positive projection of the sealing plate 606 on the flow channel plate 601 covers at least part of the non-flow channel area and at least part of the flow channel area.

[0236] Specifically, the orthographic projection of the sealing plate 606 on the flow channel plate 601 covers at least a portion of the non-flow channel area. The orthographic projection of the sealing plate 606 on the flow channel plate 601 may cover part of or the entire non-flow channel area. The orthographic projection of the sealing plate 606 on the flow channel plate 601 covers at least a portion of the flow channel area. The orthographic projection of the sealing plate 606 on the flow channel plate 601 may cover part of or the entire flow channel area. When the thickness direction of the flow channel plate 601 is the same as the vertical direction, and the first side is above the second side, the sealing plate 606 extends from above the non-flow channel area to above the flow channel area.

[0237] Understandably, in order to improve the heat exchange efficiency of the heat exchange plate within a limited space, generally speaking, the area of ​​the flow channel plate provided with the flow channel occupies the majority of the flow channel plate, leaving only a small area at the edge without the flow channel or with only a small amount of flow channels. That is, the width of the non-flow channel area is often small, making it difficult to provide sufficient area for the heat exchange plate to be fixedly connected to other structures (such as the battery tray, vehicle body, etc.). Especially for vehicles using battery-body integration (CTB) technology, the upper part of the battery pack must be sealed with the vehicle body to form a passenger compartment and an external non-passenger compartment. When the heat exchange plate is applied above the battery pack, the flow channel area has an uneven surface due to the flow channels, making it difficult to fix or seal with the battery pack and / or vehicle body. The non-flow channel area is relatively small. Excluding the area used for fixing with the battery pack tray, the remaining non-flow channel area is narrow in width, making it difficult to provide sufficient area for sealing with the vehicle body. Through the structural design of the flow channel plate 601, sealing plate 606 and support member 608, the area of ​​the cold plate 60 used for sealing with the external structure (such as the vehicle body) can be increased, the sealing effect can be improved, and the reliability and safety of the battery pack and the vehicle can be ensured.

[0238] According to some specific embodiments of the present application, the support member 608 is supported between the non-flow channel area and the sealing plate. In other words, the support member 608 is disposed corresponding to the non-flow channel area (the area outside the protrusion 603 on the first side of the flow channel plate 601).

[0239] According to some specific embodiments of the present application, the support member 608 is a frame-shaped structure, and the support member 608 is arranged corresponding to the non-flow channel area, or the flow channel plate 601 and the sealing plate 606 are sealed and connected through the support member 608. That is, the flow channel plate 601 and the sealing plate 606 are sealed and connected at the support member 608. In this way, the support member 608 supports the edge of the sealing plate 606 on the outer peripheral side of the entire flow channel 605. While increasing the stability of the sealing plate 606, the structure of the support member 608 is simple, easy to process, and reduces the weight of the cold plate 60. Optionally, the support member 608 can be welded by multiple frames; further optionally, the support member 608 can be brazed and spliced ​​by four frames.

[0240] According to some embodiments of the present application, the sealing plate 606 is formed with an opening 607 extending through the thickness of the flow plate 601. The opening 607 is adapted to face the vehicle's passenger compartment. Referring to Figures 57 and 58, a rectangular opening 607 is formed through the sealing plate 606, and the dimensions of the opening 607 roughly correspond to the dimensions of the vehicle's passenger compartment. This reduces the weight of the cold plate 60 and allows the vehicle's passenger compartment to align with the flow plate 601. Heat or cold energy from the passenger compartment can be exchanged with the flow plate 601, thereby indirectly utilizing heat or cold energy from the passenger compartment for heat exchange with the battery cells, thereby improving the heat exchange efficiency of the battery pack 10. Furthermore, the portion of the sealing plate 606 without the opening 607 provides a fixing point for the cold plate 60 to the vehicle's components, facilitating connection between the cold plate 60 and the non-passenger compartment portion of the vehicle body. This ensures the seal has good structural strength while allowing the battery pack 10 to be stably mounted on the vehicle body.

[0241] In some optional embodiments, referring to FIG. 57 , the cold plate 60 further includes a temperature averaging plate 609, which is disposed on the second side of the flow channel plate 601. For example, the temperature averaging plate 609 is disposed on the second side plate 604. By disposing the temperature averaging plate 609 on the second side plate 604 of the flow channel plate 601, heat within the flow channel 605 is evenly distributed on the temperature averaging plate 609 through heat conduction. The temperature averaging plate 609 is then used to regulate the battery cells, thereby ensuring temperature consistency of the battery cells in the battery pack 10.

[0242] In some optional embodiments, a seventh insulating layer 610 is provided on the surface of the heat spreader 609 away from the flow channel plate 601. As shown in FIG57 , the heat spreader 609 is positioned away from the flow channel plate 601, facing the battery cells. The provision of the seventh insulating layer 610 effectively enhances the insulation protection of the heat spreader 609, thereby preventing thermal runaway from the battery cells from being transferred to the heat spreader 609 and causing arcing and fire, thereby increasing the safety of the battery pack 10.

[0243] In some optional embodiments, the sealing plate 606, the support member 608, the flow channel plate 601 and the temperature balancing plate 609 are connected as a whole by welding. The type of welding is not particularly limited. In some optional embodiments, the sealing plate 606, the support member 608, the flow channel plate 601 and the temperature balancing plate 609 can be connected as a whole by brazing. Brazing technology is a method of using a material with a lower melting point than the base material as a brazing material, heating the weldment and the brazing material to a temperature higher than the melting point of the brazing material and lower than the melting temperature of the base material (so that the base material remains in a solid state), using the wetting effect of the liquid brazing material to fill the joint gap, and mutually diffusing with the base material to achieve a connection between the welded workpieces. Common brazing methods include soldering, copper welding, and lead enamelling. The sealing plate 606, the support member 608, the flow channel plate 601 and the temperature balancing plate 609 are connected into one by brazing. The heating temperature is low, the deformation of the flow channel plate 601, the sealing plate 606, the support member 608 and the temperature balancing plate 609 is small, the joints are smooth and beautiful, and the production efficiency is high.

[0244] In some optional embodiments, the flow channel plate 601 includes a first side plate 602 and a second side plate 604 disposed in the thickness direction of the flow channel plate 601. The first side plate 602 has a protrusion 603. The protrusion 603 and the second side plate 604 together define a flow channel 605. In this way, the structure and manufacturing process of the flow channel plate 601 can be simplified.

[0245] The battery pack 10 according to an embodiment of the present application includes a battery tray 20, a top cold plate, and battery modules 30. The first cold plate is the cold plate 60 described in the aforementioned embodiment of the present application. The cold plate 60 and the battery tray 20 enclose a battery receiving space 21. The battery modules 30 are housed in the battery receiving space 21. The cold plate 60 is located on top of the battery tray 20 and contacts the tops of the batteries. The battery receiving space 21 of the battery tray 20 is suitable for placing batteries. The cold plate 60 blocks one side of the battery tray 20 in its thickness direction and enables heat exchange with the battery modules 30, thereby regulating the thermal conductivity of the battery modules 30 and maintaining a stable internal temperature of the battery pack 10 to ensure proper operation. For example, the battery tray 20 has an open top. The cold plate described in the aforementioned embodiment of the present application is located at the top opening of the battery tray 20. The battery tray 20 and the cold plate 60 enclose a battery receiving space 21. The battery receiving space 21 is located below the flow channel plate 601 and contains the battery modules 30.

[0246] According to the battery pack 10 of the embodiment of the present application, the temperature of the battery pack 10 is regulated by adopting the cold plate 60 , thereby ensuring the normal operation of the battery pack 10 .

[0247] In some optional embodiments, the first cold plate is disposed on the top of the battery tray 20; the battery pack 10 further includes a second cold plate disposed on the bottom of the battery tray 20. Thus, having cold plates at both the top and bottom of the battery pack 10 enhances the efficiency of regulating the temperature inside the battery pack 10 and further improves the operational stability of the battery pack 10.

[0248] In an embodiment of the present application, multiple battery cells are generally connected in series to form a battery pack, and the overall voltage of the battery pack is too large. Therefore, on this basis, it is necessary to ensure the high-voltage safety of the entire battery pack. Therefore, as shown in Figures 1 to 13, in an optional embodiment, the battery module 30 includes at least one group of first battery modules and second battery modules; the distribution box includes a first distribution box 40 and a second distribution box 41; the first distribution box 40 is connected in series between the first battery module and the second battery module; the second distribution box 41 is used to output electrical energy to the outside, and the second distribution box 41 is communicated with the first distribution box 2; the first distribution box 2 is used to respond to the signal of the second distribution box 41 to connect or disconnect the first battery module and the second battery module.

[0249] To further illustrate, as shown in Figures 1 to 13, the battery module 30 includes a first battery module and a second battery module, and the distribution box includes a first distribution box 40 and a second distribution box 41. The first distribution box 40 is connected in series between the first battery module and the second battery module, and the circuit between the first battery module and the second battery module can be connected or disconnected through the first distribution box 40. The second distribution box 41 is connected to the first distribution box 40 and is used to output electrical energy to the outside to regulate the electrical energy in the battery pack. The first distribution box 40 is used to respond to signals from the second distribution box 41 to connect or disconnect the first battery module and the second battery module. There is no need for an external battery management module to control the operation of the distribution box. When the battery pack 10 is assembled or repaired, the disconnection or connection of the first distribution box 40 can be controlled directly through the second distribution box 41, so that the first battery module and the second battery module can be disconnected through the first distribution box 40, thereby dividing the entire pack into two, and the total voltage will also be divided into two, thereby reducing the total voltage of the entire pack when disconnected, reducing the safety risk of the operator and the risk of high-voltage arcing when the battery pack 10 is out of control.

[0250] Optionally, the first distribution box 40 includes a first switch module 403 , which is connected in series between the first battery module and the second battery module, and is in communication with the second distribution box 41 .

[0251] As shown in Figure 11, the first distribution box 40 includes a first switch module 403, which is connected in series between the first battery module and the second battery module. The first switch module 403 can open or close the connection between the first battery module and the second battery module. The first switch module 403 is also connected to the second distribution box 41, which can control the opening and closing of the first switch module 403.

[0252] To further illustrate, the negative terminal of the first switch module 403 is connected to the positive terminal of the first battery module, and the positive terminal of the first switch module 403 is connected to the negative terminal of the second battery module, so that the first switch module 403 can be connected in series between the first battery module and the second battery module.

[0253] To further illustrate, the first switch module 403 may be a relay, a smart fuse, or a circuit board with a control function, as long as the first battery module and the second battery module can be disconnected or connected by controlling the switch of the first switch module 403 .

[0254] Optionally, the second distribution box 41 includes a battery management module, which is communicatively connected to the first switch module 403 , and is used to send control instructions to control the connection or disconnection of the first switch module 403 .

[0255] The battery management module (BMS) is a device that monitors the status of energy storage batteries. Its main function is to intelligently manage and maintain each battery unit, prevent overcharging and over-discharging of the battery, extend the battery life, and monitor the battery status.

[0256] To further illustrate, the second power distribution module 3 includes a battery management module, which is communicatively connected to the first switch module 403, thereby enabling the battery management module to control the opening and closing of the first switch module 403. When the battery management module detects a fault in the battery pack 10, or during assembly or repair, the battery management module can control the first switch module 403 to disconnect the first battery module from the second battery module. Alternatively, when the first battery module needs to be connected to the second battery module, the battery management module's first switch module 403 can also be used to connect the first battery module to the second battery module.

[0257] In another embodiment, the battery management module is communicatively connected to the first switch module 403, the battery management module is used to send data instructions, and the first switch module 403 is used to respond to the data instructions and connect or disconnect the first battery module and the second battery module based on the data instructions.

[0258] Optionally, the first distribution box 40 further includes a second switch module 404 , which is connected in series between the first battery module and the second battery module. The second switch module 404 is adapted to be disconnected after a preset parameter reaches a threshold.

[0259] To further illustrate, if a short circuit occurs in the first battery module or the second battery module or the temperature is too high, the circuit between the first battery module and the second battery module can be disconnected by the second switch module 404 to avoid accidents and thus improve the safety of the battery pack 10.

[0260] Furthermore, the second switch module 404 can be a blown fuse or a resettable fuse. When the current in the circuit reaches a certain level or the temperature is too high, the second switch module 404 will automatically disconnect. A resettable fuse can be selected so that it can continue to function after the fault in the battery pack 10 is corrected.

[0261] To ensure safety between the first and second distribution boxes and the batteries, the present application isolates the electrical storage space where the distribution boxes are installed from the battery storage space where the batteries are installed. Furthermore, the first distribution box 40 and the second distribution box 41 are located in different electrical storage spaces 21. Each electrical storage space 21 has an opening, and the opening of the electrical storage space 21 where the first distribution box 40 is located faces opposite to the opening of the electrical storage space 21 where the second distribution box 41 is located.

[0262] Among them, in addition to the battery management system, the first distribution box 40 can also be provided with high-voltage relays, circuit breakers, fuses, low-voltage relays and other components, which are used to control the external output of the battery and ensure the safety of the battery.

[0263] Optionally, a first connection hole (not shown) is opened on the second distribution box 41, and a second connection hole 2211 is opened on the tray horizontal side beam 221;

[0264] The first battery module and the second battery module are connected to the second distribution box 41 through the first connection hole and the second connection hole 2211 .

[0265] To further illustrate, as shown in Figures 9 and 10, a first connection hole is defined on the side wall of the second distribution box 41 adjacent to the cavity, and a second connection hole 2211 is defined on the side wall of the tray cross beam 221 adjacent to the second distribution box 41. The first connection hole and the second connection hole 2211 are positioned correspondingly. The connectors of the battery module 30 can extend into the interior of the second distribution box 41 through the first and second connection holes 2211 and connect with the connectors of the second distribution box 41. This allows the battery accommodating space 21 to be separated from the second distribution box 41 while facilitating connection of the battery module 30 to the second distribution box 41.

[0266] Optionally, sealing members are provided at the first connection hole and the second connection hole 2211 .

[0267] To further illustrate, after the second distribution box 41 is connected to the battery module 30 , the first connection hole and the second connection hole 2211 are sealed with a sealant, thereby achieving spatial isolation between the battery tray 20 and the second distribution box 41 .

[0268] In addition, in other embodiments, only one distribution box may be provided in the battery pack, and the distribution box is electrically connected to the positive and negative poles of the battery pack and to the output port of the battery pack, thereby controlling the external output performance of the battery pack.

[0269] In order to ensure the neatness and safety of the first distribution box and the second distribution box and the related sampling harnesses or connecting harnesses, when the first distribution box and the second distribution box are respectively arranged on both sides of the battery tray, as shown in Figures 14 to 18, in an optional embodiment, the battery pack 10 also includes a battery harness; the structural beam 22 has a receiving groove 2244 on the side away from the battery tray 20, and the battery harness is accommodated in the receiving groove 2244 and insulated from the structural beam 22. The open side of the receiving groove 2244 is arranged away from the battery tray 20. In addition, in addition to the case where two distribution boxes are provided, the above technical solution can also be used in other application scenarios to ensure the neatness of the harness.

[0270] To further illustrate, the battery pack 10 also includes a battery wiring harness, which is accommodated in the receiving groove 2244 of the structural beam 22 and is insulated from the structural beam 22. Therefore, most of the battery wiring harness can be protected by the structural beam 22, and when the battery module 30 in the battery receiving space 21 experiences thermal runaway, the adverse effects on the battery wiring harness are reduced. Similarly, the battery wiring harness is accommodated in the receiving groove 2244 of the structural beam 22, which can also reduce the adverse effects of thermal runaway of the battery module 30 on the battery module 30. In addition, the open side of the receiving groove 2244 is set away from the battery tray 20. The open side is set on the side of the structural beam 22 away from the battery tray 20 to facilitate the installation of the battery wiring harness.

[0271] The battery wiring harness may be in the form of a metal bar or a cylindrical cable, which is not further limited in this application.

[0272] Optionally, a container is further included, in which the battery wiring harness is accommodated, and the container is accommodated in the accommodating groove 2244 . The container is a groove-shaped component, and the opening side of the container and the opening side of the accommodating groove 2244 face the same direction.

[0273] To further illustrate, the battery wiring harness can be directly accommodated in the accommodating groove 2244, or can be first accommodated in an accommodating member (such as the first accommodating member 2242 or the second accommodating member 2243 described below), and then the accommodating member is accommodated in the accommodating groove 2244. The accommodating member can be a slot-shaped member, with the open side of the accommodating member and the open side of the accommodating groove 2244 facing the same direction.

[0274] Optionally, the battery wiring harness includes a high-voltage connector 51 , the accommodating member includes a first accommodating member 2242 , the high-voltage connector 51 is accommodated in the first accommodating member 2242 , and the first accommodating member 2242 is accommodated in the accommodating groove 2244 .

[0275] To further illustrate, the battery wiring harness includes a high-voltage connector 51, and the container includes a first container 2242. The high-voltage connector 51 includes a conductor such as copper or aluminum, and is used to establish a high-voltage electrical connection with the battery module 30, such as a busbar for each battery module 30. The copper, aluminum, or other conductors in the high-voltage connector 51 can be wrapped with an insulating film. The first container 2242 can be made of an insulating material. If the high-voltage connector 51 itself is insulated, the first container 2242107 can also be made of a non-insulating material. The high-voltage connector 51 is accommodated in the first container 2242, and then the first container 2242 is accommodated in the accommodating groove 2244, thereby achieving electrical insulation between the high-voltage connector 51 and the structural beam 22. The high-voltage connector 51 will be doubly protected by the first container 2242 and the structural beam 22, further reducing the adverse effects of thermal runaway.

[0276] The first accommodating member 2242 can be a groove-shaped member or a tubular member. The first accommodating member 2242 can be an optional groove-shaped member. As a "groove" type structure, there must be four sides, namely two opposite side walls, a bottom wall and an open side. Whether the two ends of the "groove" type structure are open is not limited in this application. The open side of the first accommodating member 2242 faces the same direction as the open side of the accommodating groove 2244. The advantage of this structure is that when the battery pack 10 is assembled, the first accommodating member 2242 can be first installed into the accommodating groove 2244 from the open side of the accommodating groove 2244, and then the high-voltage connector 51 can be installed into the first accommodating member 2242 from the open side of the first accommodating member 2242, which is convenient for assembly.

[0277] Optionally, the battery harness includes a low-voltage connector 52 , the accommodating member includes a second accommodating member 2243 , the sampling bus is accommodated in the second accommodating member 2243 , and the second accommodating member 2243 is accommodated in the accommodating groove 2244 .

[0278] As shown in Figure 16, the battery wiring harness includes a low-voltage connector 52, and the housing includes a second housing 2243. The sampling bus is housed within the second housing 2243, which is then housed within a housing groove 2244. Thus, the tray longitudinal beam 224 and the second housing 2243 provide dual protection for the low-voltage connector 52, further mitigating the adverse effects of thermal runaway. The sampling bus relies on its inherent insulation layer for electrical insulation from the tray longitudinal beam 224. The second housing 2243 can be made of either insulating or non-insulating materials.

[0279] Similar to the first accommodating member 2242, the second accommodating member 2243 can be a slot-shaped member or a tubular member. Optionally, the second accommodating member 2243 is a slot-shaped member. The opening side of the second accommodating member 2243 faces the same direction as the opening side of the accommodating slot 2244105. This structure has the advantage that, during assembly of the battery pack 10, the second accommodating member 2243 can first be installed into the accommodating slot 2244 from the open side thereof, and then the low-voltage connector 52, such as a sampling bus, can be installed into the first accommodating member 2242 from the open side of the second accommodating member 2243, facilitating assembly.

[0280] Optionally, the low-voltage connector 52 includes a sampling bus, which includes a plurality of sampling lines 53 and a fourth insulating layer, and the plurality of sampling lines 53 are wrapped together by the fourth insulating layer.

[0281] As shown in Figure 15 , the low-voltage connector 52 includes a sampling bus, which includes multiple sampling lines 53 and a fourth insulating layer. The sampling lines 53 are encapsulated by the fourth insulating layer. The low-voltage connector 52 can also include other signal lines. In this context, "encapsulated" does not mean completely encapsulated, but rather allows the individual sampling connectors of each sampling line 53 to be connected to devices other than the sampling bus. This sampling bus structure can avoid wiring clutter.

[0282] Optionally, the battery wiring harness includes a high-voltage connector 51 and a low-voltage connector 52, and the battery pack 10 also includes a first accommodating member 2242 and a second accommodating member 2243. The high-voltage connector 51 is accommodated in the first accommodating member 2242, and the low-voltage connector 52 is accommodated in the second accommodating member 2243. The first accommodating member 2242 and the second accommodating member 2243 are both accommodated in the accommodating groove 2244. The first accommodating member 2242 and the second accommodating member 2243 are both groove-shaped members. The opening side of the first accommodating member 2242, the opening side of the second accommodating member 2243 and the opening side of the accommodating groove 2244 face the same direction, and the bottom wall of the second accommodating member 2243 closes the opening side of the wiring accommodating member.

[0283] As an alternative, the battery wiring harness includes both a high-voltage connector 51 and a low-voltage connector 52 (e.g., a sampling bus). Accordingly, the accommodating member includes a first accommodating member 2242 and a second accommodating member 2243. The first accommodating member 2242 and the second accommodating member 2243 are both accommodated within the accommodating groove 2244. The first accommodating member 2242 and the second accommodating member 2243 are both slot-shaped members, with the opening side of the first accommodating member 2242, the opening side of the second accommodating member 2243, and the opening side of the accommodating groove 2244 facing the same direction, that is, all three opening sides face upward as shown in FIG6 , and the bottom wall of the second accommodating member 2243 closes the opening side of the cable accommodating member. The advantage of this structure is that, from the perspective of assembly, the first accommodating member 2242 can be first installed into the accommodating member 2242 from the open side of the accommodating groove 2244, and then the high-voltage connector 51 can be installed into the first accommodating member 2242 from the open side of the first accommodating member 2242, and then the second accommodating member 2243 can be installed into the accommodating groove 2244 from the open side of the accommodating groove 2244, and finally the low-voltage connector 52, such as the sampling bus, can be installed into the first accommodating member 2242 from the open side of the second accommodating member 2243. All assembly is carried out from top to bottom, which is convenient for assembly. From the perspective of protecting the wiring harness, this structure uses the bottom wall of the second accommodating member 2243 to close the open side of the wiring accommodating member, so that the high-voltage connector 51, which is more sensitive to the risk of thermal runaway, is more strongly protected, and the protection effect of the entire structure on the high and low voltage connectors 52 is more reasonable.

[0284] Furthermore, the high-voltage connector in the above embodiment can be a busbar extending from a distribution box. Since the distribution box is located on both sides of the battery tray, and the two charging and discharging ports are also located on both sides of the battery tray, the busbar extending from the second distribution box needs to be connected to the charging and discharging ports located on the other end of the battery tray. This allows the high-voltage connector to be housed within the structural beam for protection and to make the wiring inside the battery pack neater. In addition, low-voltage connectors, such as sampling harnesses, can also be integrated into the structural beam to ensure the neatness of the harness within the battery pack and improve battery pack safety.

[0285] Optionally, the structural beam 22 has a first reinforcing rib, and the first reinforcing rib supports the first accommodating member 2242 so that an isolation space exists between the first accommodating member 2242 and the bottom of the structural beam 22 .

[0286] Furthermore, the structural beam 22 has a first reinforcing rib. The first reinforcing rib not only reinforces the structure of the tray longitudinal beam 224 but also supports the first accommodating member 2242, thereby creating an isolation space between the first accommodating member 2242 and the bottom of the tray longitudinal beam 224. This prevents the high-voltage connector 51 and the low-voltage connector 52 from falling too deep into the accommodating groove 2244, thereby preventing the battery wiring harness from being excessively bent.

[0287] Optionally, the sampling bus has a plurality of sampling connectors, and the second accommodating member 2243 has a plurality of first bayonet holes 22431 . The first bayonet holes 22431 are engaged with the sampling lines 53 , so that the sampling connectors are located outside the second accommodating member 2243 .

[0288] As shown in Figure 15 , the low-pressure connector 52 has multiple sampling connectors. As shown in Figure 16 , the second accommodating member 2243 has multiple first bayonet holes 22431 . The sampling connectors extend from the opening side, so that each sampling line 53 engages with a first bayonet hole 22431 , positioning the sampling connector outside the low-pressure line container. The first bayonet holes 22431 can be sealed with a sealant.

[0289] Optionally, as can be seen more clearly in Figure 17, the sampling connector includes a sampling nickel sheet 54 and a quick-plug connector 55. The sampling nickel sheet 54 is connected to the connector of the battery module 30, and the quick-plug connector 55 is plugged into the sampling adapter harness plug 56 of the battery module 30.

[0290] Optionally, the accommodating slot 2244 defines a second bayonet 22441 , and the second bayonet 22441 overlaps with the first bayonet 22431 .

[0291] As shown in FIG14 , the receiving slot 2244 is provided with a second bayonet 22441 , which overlaps with the first bayonet 22431 , so that each sampling head of the sampling line 53 can smoothly pass through the first bayonet 22431 and the second bayonet 22441 to reach the desired sampling position.

[0292] Optionally, the structural beam 22 includes a pallet longitudinal beam 224 and a pallet transverse beam 223, and the receiving slot 2244 is provided in the pallet longitudinal beam 224 or the pallet transverse beam 223, the pallet longitudinal beam 224 is connected to the pallet transverse beam 223, and the longitudinal or transverse distance between at least one second latch 22441 and the connection between the pallet longitudinal beam 224 and the pallet transverse beam 223 is less than a first threshold. Specifically, the receiving slot 2244 is provided in the pallet longitudinal beam 224, and the longitudinal distance between the second latch 22441 and the connection between the pallet longitudinal beam 224 and the pallet transverse beam 223 is less than the first threshold; or the receiving slot 2244 is provided in the pallet transverse beam 223, and the transverse distance between the second latch 22441 and the connection between the pallet longitudinal beam 224 and the pallet transverse beam 223 is less than the first threshold.

[0293] As can be seen from Figure 14, the battery tray 20 also includes a tray crossbeam 223, and the tray longitudinal beam 224 intersects with the tray crossbeam 223, thereby dividing the battery tray 20 into a plurality of battery accommodating spaces 21. The tray longitudinal beam 224 and the tray crossbeam 223 can jointly improve the structural strength of the battery tray 20. As before, the tray crossbeam 223 can also form a receiving groove 2244 and accommodate the battery wiring harness. In conjunction with Figures 1 and 6, the receiving groove 2244 is provided with a second bayonet 22441, and the second bayonet 22441 overlaps with the first bayonet 22431, so that each sampling head of the sampling line 53 can smoothly pass through the first bayonet 22431 and the second bayonet 22441 to reach the required sampling position.

[0294] To further illustrate, the longitudinal distance D between at least one second latch 22441 and the connection between the pallet longitudinal beam 224 and the pallet transverse beam 223 is less than a first threshold. This first threshold can be 2 cm, 3 cm, or another suitable value, and can be selected based on the lengths of the pallet longitudinal beam 224 and the pallet transverse beam 223. In other words, the second latch 22441 is located near the connection between the pallet longitudinal beam 224 and the pallet transverse beam 223, providing greater structural strength at this connection. This provides high-strength protection for the connection between the sampling line 53 and the sampling connector, making the sampling line 53 less susceptible to crushing and fracture. In the embodiment shown in FIG7 , the second latch 22441 is located on the pallet longitudinal beam 224, so D is a longitudinal distance. If the second latch 22441 is located on the pallet transverse beam 223, the distance D is a transverse distance.

[0295] In one embodiment of the present application, in order to ensure the safety and reliability of operations such as maintenance, installation or replacement in the battery pack, the present application also discloses a requirement for connecting two bus bars. Specifically, as shown in Figures 1 to 13, in an optional embodiment, the battery pack 200 includes the above-mentioned battery tray 20, and also includes a sealing cover that seals the battery tray 20, and multiple working units. The multiple working units are located in the battery tray 20, and the two working units are electrically connected through two bus bars, and the connection between the two bus bars constitutes a connecting structure; wherein, a supporting component is provided on the battery tray 20, and at least two connecting structures are located on the side of the supporting component facing the sealing cover.

[0296] To further illustrate, the battery pack 10 includes a battery tray 20, which is provided with a sealing cover for sealing the battery tray 20, wherein the working unit is placed inside the battery tray 20. The sealing cover is used to cover the opening of the battery tray 20 for placing the working unit, and all the connecting structures face the sealing cover and face the same direction to facilitate assembly.

[0297] In one example of the present application, the support component can be a support beam. The battery tray 20 is provided with a support beam, wherein the support beam can be a tray transverse side beam 221, a tray longitudinal side beam 222, a tray longitudinal beam 224, a tray transverse beam 223, etc., which can provide a mounting position for the connection structure. In other examples of the present application, the support component can also be a separately provided support plate, located in the battery tray 20 to support the connection structure.

[0298] To further illustrate, the working unit may be a battery module 30 , a distribution box or a front-end drive plug-in 42 .

[0299] To further illustrate, any two working units are electrically connected via two busbars, with the connection between the two busbars forming a connecting structure. A supporting component is provided on the battery tray 20, and the connecting structure is located on the supporting component, providing a connection location for connecting the working units and facilitating installation. The connecting structure is oriented toward the side of the sealing cover, both for ease of operation and because both connections are oriented in the same direction, eliminating the need for orientation adjustment during assembly, thereby improving production efficiency.

[0300] In one embodiment, there are multiple connection structures, and at least 50% of the connection structures are located on the side of the support component facing the sealing cover. This ensures that most connection structures in the battery pack 10 or connection structures in necessary locations are easy to assemble, replace, or repair, thereby improving production and maintenance efficiency.

[0301] In one embodiment, there are a plurality of connecting structures, and at least 80% of the connecting structures are located on a side of the supporting component facing the sealing cover.

[0302] In one embodiment, there are multiple connection structures, all of which are located on the side of the support component facing the sealing cover, thereby ensuring that all connection structures in the battery pack 10 are easy to assemble, replace, or repair, thereby improving production and maintenance efficiency.

[0303] Optionally, the working unit includes at least two battery modules 30 and a first element. The two battery modules 30 are electrically connected through two buses to form a first connection structure. The battery module 30 and the first element are electrically connected through two buses to form a second connection structure. Both the first connection structure and the second connection structure are located on the side of the support component facing the sealing cover.

[0304] In one embodiment, the working unit includes at least two battery modules 30 and a first component, wherein the first component can be a battery module 30 , a power distribution box, or a front drive plug-in 42 .

[0305] Specifically, the battery modules 30 are electrically connected to each other via a busbar, forming a first connection structure at the connection point. The battery modules 30 are also electrically connected to the first component via a busbar, forming a second connection structure at the connection point. Both the first and second connection structures are located on the side of the support member facing the sealing cover. This facilitates operation and, since they are connected in the same direction, eliminates the need for orientation adjustments during assembly, improving production efficiency.

[0306] Optionally, the battery pack 10 further includes an adapter 303 , and the two busbars are connected via the adapter 303 , wherein one busbar and the adapter 303 and the other busbar and the adapter 303 are both located on the side of the support component facing the sealing cover.

[0307] As shown in Figures 1 and 2, the battery pack 10 also includes an adapter 303, which connects the two buses together. By setting the adapter 303, it is convenient to connect the battery module 30 with the battery module 30, and the battery module 30 with the first component. It is also convenient to route the wires inside the battery pack 10, which can improve the space utilization of the battery pack 10 and facilitate welding.

[0308] Specifically, one of the busbars is electrically connected to one end of the adapter 303, and the other busbar is electrically connected to the other end of the adapter 303, thereby realizing the connection of the two busbars together through the adapter 303, wherein the connection between the busbar and the adapter 303 and the connection structure formed by the adapter 303, the connection between the busbar and the adapter 303 is located on the side of the support component facing the sealing cover, and the busbar and the adapter 303 are connected by welding or screwing. At this time, the connection direction is in the same direction. When installing, that is, connecting from top to bottom, on the one hand, it is convenient for operation, and on the other hand, they are all connected in the same direction, and there is no need to adjust the direction, which can improve production efficiency, and the electrical connection and fixation are realized in one direction, so that the operation is within the visual range, and it is also convenient to check whether the fixation is qualified.

[0309] In one embodiment, the working unit includes at least two battery modules 30 and a distribution box, wherein any two battery modules 30 are connected, and the battery modules 30 are connected to the distribution box.

[0310] The battery pack 10 provided herein includes at least two battery modules 30. In embodiments, three, four, five, six, or even more battery modules 30 may be selected. The number of battery modules 30 can be selected based on practical application and is not limited in this application. Any specific number mentioned below is for illustrative purposes only.

[0311] To further illustrate, each battery module 30 is provided with a first connector 321 and a second connector 322, which are connected to the electrode terminals of the battery module 30, one of which is connected to the positive terminal of the battery module 30, and the other is connected to the negative terminal of the battery module 30; a third bus is provided on the distribution box, wherein the third bus is connected to the positive and negative leads of the distribution box.

[0312] Further description is given, the battery modules 30 and the battery modules 30 are connected with a first connection structure, wherein the first connecting member 321 of one battery module 30 overlaps and overlaps with the second connecting member 322 of another battery module 30, and the overlapping direction is toward one side of the sealing cover, and the first connecting member 321 and the second connecting member 322 are connected by welding.

[0313] It is further explained that the distribution box can be used to control or monitor the operation of the battery pack 10.

[0314] It is further explained that the distribution box is connected to two adjacent battery modules 30 with a second connection structure, wherein the third bus overlaps and overlaps with the first connecting member 321 of the battery module 30, and the overlapping direction is toward one side of the sealing cover, or the third bus overlaps and overlaps with the second connecting member 322 of the battery module 30, and the overlapping direction is toward one side of the sealing cover, thereby realizing the connection relationship between the distribution box and the battery module 30.

[0315] Therefore, whether it is between battery modules 30 and battery modules 30 or between battery modules 30 and distribution boxes, their connection directions are overlapping and lap-connected, and their lap-connecting directions are all toward one side of the sealing cover. At this time, the welding directions are all in the same direction. When welding, that is, welding from top to bottom, on the one hand, it is easy to operate, and on the other hand, they are all welded in the same direction. There is no need to adjust the direction during welding, which can improve production efficiency, and the electrical connection is fixed in one direction, so that the operation is within the visual range, and it is also convenient to check whether the fixation is qualified.

[0316] In one embodiment, the working unit includes at least two battery modules 30 and a precursor plug-in 42 , wherein any two battery modules 30 are connected, and the battery module 30 is connected to the precursor plug-in 42 .

[0317] The connection method between the battery modules 30 is the same as that in the above embodiment, and thus will not be described in detail.

[0318] As shown in FIG. 5 , the front-drive plug-in 42 is disposed on the battery tray 20 , which facilitates connection with the battery module 30 and the entire vehicle.

[0319] Further description, the front drive plug-in 42 is connected to the adjacent battery module 30 with a fourth connection structure, wherein the fourth bus 421 is overlapped and connected with the first connector 321 of the battery module 30, and the overlapping direction is toward one side of the sealing cover, or the fourth bus 421 is overlapped and connected with the second connector 322 of the battery module 30, and the overlapping direction is toward one side of the sealing cover.

[0320] Specifically, whether it is between battery modules 30 and battery modules 30 or between battery modules 30 and precursor plug-in 42, the connection direction is overlapping and overlapping. At this time, the welding direction is in the same direction. When welding, that is, welding from top to bottom, on the one hand, it is easy to operate, and on the other hand, they are all welded in the same direction. There is no need to adjust the direction during welding, which can improve production efficiency, and the electrical connection is fixed in one direction, so that the operation is within the visual range, and it is also convenient to check whether the fixation is qualified.

[0321] Optionally, the working unit includes a distribution box and a precursor plug-in 42; the precursor plug-in 42 is provided with a fourth bus 421; the distribution box is provided with a third bus; the precursor plug-in 42 is electrically connected to the distribution box through the third bus and the fourth bus 421, and a fifth connection structure is formed at the connection; wherein the fifth connection structure is located on the side of the support component facing the sealing cover.

[0322] Further explaining, the connection between the front drive plug-in 42 and the distribution box has a fifth connection structure, wherein the fourth busbar 421 is connected to the third busbar. The fourth busbar 421 and the third busbar are overlapped and connected together, with the overlap direction facing one side of the sealing cover. The fourth busbar 421 and the third busbar are connected from top to bottom by screws. At this time, the connection direction is the same, which not only facilitates operation, but also eliminates the need for direction adjustment during assembly, which can improve production efficiency.

[0323] Optionally, the working unit includes at least two battery modules 30, a distribution box and a front drive plug-in 42; each battery module 30 is provided with a first connector 321 and a second connector 322, the distribution box is provided with a third bus, and the front drive plug-in 42 is provided with a fourth bus 421; in adjacent battery modules 30, the first connector 321 of one battery module 30 is electrically connected to the second connector 322 of another battery module 30 and a first connection structure is formed at the connection; the third bus of the distribution box is electrically connected to the first connector of the battery module 30. The first connecting member 321 or the second connecting member 322 is electrically connected and a third connecting structure is formed at the connection point; the fourth bus 421 of the precursor plug-in 42 is electrically connected to the first connecting member 321 or the second connecting member 322 of the battery module 30 and a fourth connecting structure is formed at the connection point; the fourth bus 421 of the precursor plug-in 42 is electrically connected to the third bus of the distribution box and a fifth connecting structure is formed at the connection point; wherein, at least two of the first connecting structure, the third connecting structure, the fourth connecting structure and the fifth connecting structure are located on the side of the support component facing the sealing cover.

[0324] In one embodiment of the present application, an operating space is provided between the end of the support member facing the sealing cover and the sealing cover, and the connecting structure is placed within the operating space. This operating space facilitates installation and maintenance of the connecting structure by the user, and prevents the top of the connecting structure from being blocked by other components, thereby reducing installation efficiency.

[0325] In other embodiments of the present application, the connecting structure is disposed at one end of the support member facing the sealing cover and adjacent to the sealing cover. The adjacent arrangement of the connecting structure adjacent to the sealing cover further reduces the gap between the connecting structure and the sealing cover, thereby preventing the top of the connecting structure from being blocked by other components and reducing installation efficiency.

[0326] In one embodiment, the working unit includes at least two battery modules 30, a distribution box and a precursor plug-in 42, wherein any two battery modules 30 are connected, the battery module 30 is connected to the precursor plug-in 42, the battery module 30 is connected to the distribution box, and the distribution box is connected to the precursor plug-in 42.

[0327] Among them, the connection method between the battery modules 30 and the battery modules 30, the connection method between the battery modules 30 and the precursor plug-in 42, the connection method between the battery modules 30 and the distribution box, and the connection method between the distribution box and the precursor plug-in 42 are the same as in the above-mentioned embodiment, so they are not repeated here.

[0328] Specifically, whether it is between battery modules 30 and battery modules 30, between battery modules 30 and distribution boxes, between battery modules 30 and precursor plug-in 42, or between distribution boxes and precursor plug-in 42, the connection directions are all overlapping and connected together, and the connection directions are all in the same direction. When connection and installation are required, that is, connection from top to bottom, on the one hand, it is easy to operate, and on the other hand, they are all connected in the same direction. There is no need to adjust the direction when connecting, which can improve production efficiency, and the electrical connection is fixed in one direction, so that the operation is within the visual range, and it is also convenient to check whether the fixation is qualified.

[0329] Optionally, the distribution box includes a first distribution box 40; two third sub-busbars 401 are provided on the first distribution box 40; one of the third sub-busbars 401 of the first distribution box is electrically connected to the first connecting piece 321 of one of the battery modules 30 and constitutes a third sub-connection structure at the connection point, and the other third sub-busbar 401 of the first distribution box is electrically connected to the second connecting piece 322 of another battery module 30 and constitutes a fourth sub-connection structure at the connection point; wherein, the third sub-connection structure and the fourth sub-connection structure are both located on the side of the support component facing the sealing cover.

[0330] In one embodiment, the distribution box includes a first distribution box 40, which is connected in series between two adjacent battery modules 30. This allows the first distribution box 40 to control the connection or disconnection of the circuit of the battery pack 10. Disconnecting the circuit through the first distribution box 40 splits the battery pack 10 in two, simultaneously splitting the total voltage in half. This reduces the total voltage of the battery pack 10 during disconnection, minimizing operator safety risks and the risk of high-voltage arcing in the event of a loss of control of the battery pack 10.

[0331] Optionally, if the battery pack 10 has four battery modules 30 connected in series, the first distribution box 40 is connected in series between the second battery module 30 and the third battery module 30 to control the disconnection and connection between the two battery modules 30 and the other two battery modules 30, thereby dividing the voltage of the battery pack 10 into two. If the battery pack 10 has six battery modules 30 connected in series, the first distribution box 40 is connected in series between the third battery module 30 and the fourth battery module 30 to control the disconnection and connection between the three battery modules 30 and the other three battery modules 30, thereby dividing the voltage of the battery pack 10 into two. In summary, the first distribution box 40 is connected in series in the middle of multiple battery modules 30 so that the voltage can be evenly divided when the circuit is disconnected, reducing the safety risks of operators and the risk of high-voltage arcing when the battery pack 10 is out of control.

[0332] To further illustrate, the first distribution box 40 is provided with two third secondary busbars 401, each of which is connected to the positive and negative leads of the first distribution box 40, one of which is connected to the positive lead and the other to the negative lead. To further illustrate, one of the third secondary busbars 401 overlaps and laps with the first connector 321 of one of the battery modules 30, with the overlap direction facing one side of the sealing cover. The other third secondary busbar 401 overlaps and laps with the second busbar 12 of another battery module 30, with the overlap direction facing one side of the sealing cover, thereby establishing a connection between the first distribution box 40 and the battery modules 30.

[0333] Specifically, the connection direction between the battery module 30 and the first distribution box 40 is overlapping and lap-connected, and the welding direction is in the same direction at this time. When welding, that is, welding from top to bottom, on the one hand, it is easy to operate, and on the other hand, they are welded in the same direction. There is no need to adjust the direction during welding, which can improve production efficiency, and the electrical connection is fixed in one direction, so that the operation is within the visual range, and it is also convenient to check whether the fixation is qualified.

[0334] Optionally, the battery pack 10 further includes a first adapter bar a and a second adapter bar b; the first connector 321 is connected to one of the third secondary buses 401 through the first adapter bar a, and the connection between the first connector 321 and the first adapter bar a, and the connection between one of the third secondary buses 401 and the first adapter bar a are both located on the side of the support component facing the sealing cover; the second connector 322 is connected to another third secondary bus 401 through the second adapter bar b, and the connection between the second connector 322 and the second adapter bar b, and the connection between the other third secondary bus 401 and the second adapter bar b are both located on the side of the support component facing the sealing cover.

[0335] Furthermore, the battery pack 10 further includes a first adapter bar a and a second adapter bar b. The first connector 321 is connected to one of the third secondary buses 401 via the first adapter bar a, and the second connector 322 is connected to the other third secondary bus 401 via the second adapter bar b. This facilitates connecting the battery module 30 to the first distribution box 40, facilitating wiring within the battery pack 10, improving space utilization, and facilitating welding.

[0336] To further illustrate, the first connector 321 of one battery module 30 is connected to the third secondary bus 401 via the first adapter bar a; the second connector 322 of another battery module 30 is connected to the other third secondary bus 401 via the second adapter bar b. As shown in Figure 2, the first connector 321 of one battery module 30 overlaps and laps with the first adapter bar a, with the overlap direction facing one side of the sealing cover, and the third secondary bus 401 overlaps and laps with the first adapter bar a, with the overlap direction facing one side of the sealing cover. The second connector 322 of another battery module 30 overlaps and laps with the second adapter bar b, with the overlap direction facing one side of the sealing cover, and the other third secondary bus 401 overlaps and laps with the second adapter bar b, with the overlap direction facing one side of the sealing cover. That is, one of the battery modules 30 is connected to one of the third sub-buses 401 of the first distribution box 40 through the first adapter bar a, and the other battery module 30 is connected to the other third sub-bus 401 of the first distribution box 40 through the second adapter bar b, and they all overlap in the same direction, which makes the installation direction the same. At this time, the welding directions are all in the same direction. When welding, that is, welding from top to bottom, on the one hand, it is easy to operate, and on the other hand, they are all welded in the same direction, and there is no need to adjust the direction during welding, which can improve production efficiency.

[0337] Optionally, the distribution box further includes a second distribution box 41 , which is connected to the total positive terminal 34 and the total negative terminal 35 of the plurality of battery modules 30 connected in series;

[0338] The second distribution box 41 is provided with two third main busbars 411;

[0339] The total positive terminal 34 is electrically connected to one of the third main buses 411 to form a third main connection structure, and the total negative terminal 35 is electrically connected to another third main bus 411 to form a fourth main connection structure; wherein the third main connection structure and the fourth main connection structure are both located on the side of the support component facing the sealing cover.

[0340] To further illustrate, the multiple battery modules 30 connected in series have a total positive terminal 34 and a total negative terminal 35, wherein the total positive terminal 34 and the total negative terminal 35 are respectively located on the battery modules 30 at the two ends of the multiple battery modules 30 connected in series. The second distribution box 41 is connected to the multiple battery modules 30 connected in series. The second distribution box 41 is used to monitor and control the operation of the battery pack 10.

[0341] Further, the second distribution box 41 is provided with two third main busbars 411, which are respectively connected to the positive and negative leads of the second distribution box 41, one of which is connected to the positive lead and the other to the negative lead. Furthermore, one of the third main busbars 411 overlaps and laps with the total positive terminal 34, with the overlap direction facing one side of the sealing cover, while the other third main busbar 411 overlaps and laps with the total negative terminal 35, with the overlap direction facing one side of the sealing cover, thereby establishing a connection between the second distribution box 41 and the battery module 30.

[0342] Specifically, the connection directions between the battery module 30 and the second distribution box 41 are overlapped and connected in the same direction. At this time, the welding directions are all in the same direction. When welding, that is, welding from top to bottom, on the one hand, it is easy to operate, and on the other hand, they are all welded in the same direction. There is no need to adjust the direction during welding, which can improve production efficiency, and the electrical connection is fixed in one direction, so that the operation is within the visual range, and it is also convenient to check whether the fixation is qualified.

[0343] Optionally, the battery pack 10 further includes a third transfer bar c and a fourth transfer bar d; the total positive terminal 34 is connected to one of the third main buses 411 through the third transfer bar c, and the connection between the total positive terminal 34 and the third transfer bar c, and the connection between one of the third main buses 411 and the third transfer bar c are both located on the side of the support component facing the sealing cover; the total negative terminal 35 is connected to another third main bus 411 through the fourth transfer bar d, and the connection between the total negative terminal 35 and the fourth transfer bar d, and the connection between the other third main bus 411 and the fourth transfer bar d are both located on the side of the support component facing the sealing cover.

[0344] Furthermore, the battery pack 10 also includes a third adapter bar c and a fourth adapter bar d. The third adapter bar c connects the total positive terminal 34 to one of the third main busbars 411, while the fourth adapter bar d connects the total negative terminal 35 to the other third main busbar 411. This facilitates connection between the battery modules 30 and the second distribution box 41, facilitates wiring within the battery pack 10, improves space utilization, and facilitates welding.

[0345] To further illustrate, the total positive terminal 34 is connected to one of the third main busbars 411 via a third transfer bar c, and the total negative terminal 35 is connected to another third main busbar 411 via a fourth transfer bar d. As shown in Figures 3 and 4, the total positive terminal 34 overlaps and laps with the third transfer bar c, with the overlap direction facing one side of the sealing cover. One of the third main busbars 411 overlaps and laps with the third transfer bar c, with the overlap direction facing one side of the sealing cover. The total negative terminal 35 overlaps and laps with the fourth transfer bar d, with the overlap direction facing one side of the sealing cover. The other third main busbar 411 overlaps and laps with the fourth transfer bar d, with the overlap direction facing one side of the sealing cover.

[0346] That is, the total positive terminal 34 is connected to one of the third main buses 411 of the second distribution box 41 via the third adapter bar c, and the total negative terminal 35 is connected to the other third main bus 411 of the second distribution box 41 via the fourth adapter bar d. All of the terminals overlap in the same direction, ensuring the same installation and welding directions. When welding, the terminals are welded from top to bottom. This not only facilitates operation, but also eliminates the need to adjust the direction during welding, improving production efficiency.

[0347] Optionally, the total positive terminal 34 and the total negative terminal 35 connected to the second distribution box 41 are located at both ends of the battery pack 10 in the width direction.

[0348] To further illustrate, the total positive terminal 34 and the total negative terminal 35 are respectively located at the two ends of the width direction of the battery pack 10. When the circuit of the two battery modules 30 connected to the first distribution box 40 is disconnected, the distance between the total positive terminal 34 and the total negative terminal 35 of the battery pack 10 can be increased to reduce the risk of short circuit.

[0349] Furthermore, in order to ensure that the operating space of the two busbars is located at the end of the connection away from the battery tray, that is, to ensure the visibility of the busbars, and thus to ensure the reliability of the connection between the two busbars during operation, the structural form of the busbar is particularly emphasized in one embodiment of the present application. In addition, the busbar structure disclosed in the following embodiments can be applied to other application scenarios, thereby improving the adaptability of the busbar to multiple spatial locations within the battery pack.

[0350] Specifically, as shown in Figures 59-65, the busbar 304a of the present application includes a first connecting portion 304a1, a first bent portion 304a2, a third transition portion 304a3, a second bent portion 304a4, and a second connecting portion 304a5, which are sequentially arranged. The first bent portion 304a2 has a plurality of metal sheets arranged sequentially along the thickness direction of the first bent portion 304a2, and the second bent portion 304a4 has a plurality of metal sheets arranged sequentially along the thickness direction of the second bent portion 304a4. The first connecting portion 304a1 and the first bent portion 304a2 are located at one end of the third transition portion 304a3 in the first direction, and the second bent portion 304a4 and the second connecting portion 304a5 are located at one end of the third transition portion 304a3 in the second direction, with the first direction intersecting the second direction. In the present application, the first bending portion 304a2 and the second bending portion 304a4 are formed by stacking a number of metal sheets, so that the first bending portion 304a2 and the second bending portion 304a4 can be bent. Furthermore, the first connecting portion 304a1 and the first bending portion 304a2 are located at one end of the first direction of the third transition portion 304a3, and the second bending portion 304a4 and the second connecting portion 304a5 are located at one end of the second direction of the third transition portion 304a3 so that the connecting piece can cope with different installation environments and positions, thereby improving the practicality of the connecting piece. Among them, the first direction and the second direction are arranged to intersect, that is, the first direction and the second direction form a preset angle. The specific angle selection needs to be adjusted according to user needs. Generally, the bus 304a is used in the battery pack 10, and its angle can be selected to be 90°. The thickness directions of the first bending portion 304a2 and the second bending portion 304a4 are both perpendicular to the first direction and the second direction when the first bending portion 304a2 and the second bending portion 304a4 are not bent.

[0351] Specifically, in order to meet the bending requirements, the first bending portion 304a2 and the second bending portion 304a4 of the busbar 304a are formed by stacking several metal sheets, that is, the first bending portion 304a2 has several metal sheets arranged in sequence along the thickness direction of the first bending portion 304a2, and the second bending portion 304a4 has several metal sheets arranged in sequence along the thickness direction of the second bending portion 304a4.

[0352] In the embodiment of the present application, the above-disclosed busbar is used to ensure that the busbar connection can be visualized at any position in the battery pack.

[0353] Furthermore, the first bending portion 304a2 and the second bending portion 304a4 each independently have 5-20 layers of metal sheets, that is, the number of metal sheet layers of the first bending portion 304a2 is between 5-20, and the number of metal sheet layers of the second bending portion 304a4 is also between 5-20. The number of metal sheet layers of the first bending portion 304a2 and the number of metal sheet layers of the second bending portion 304a4 can be the same, for example, 3, 8, 10, 15, 20, etc.; the number of metal sheet layers of the first bending portion 304a2 and the number of metal sheet layers of the second bending portion 304a4 can also be different, for example, the number of metal sheet layers of the first bending portion 304a2 is 10, and the number of metal sheet layers of the second bending portion 304a4 is 15. Specifically, when the number of metal sheet layers is between 5 and 20 layers, the first bending portion 304a2 and the second bending portion 304a4 can maintain good bending performance, while also reducing the risk of breakage of the first bending portion 304a2 and the second bending portion 304a4, and improving the flexibility and adaptability of the first bending portion 304a2 and the second bending portion 304a4.

[0354] In the examples disclosed herein, the connector is a single piece, wherein the first connecting portion 304a1, the first bent portion 304a2, the third transition portion 304a3, the second bent portion 304a4, and the second connecting portion 304a5 are formed by stacking and hot-pressing a plurality of metal sheets. Specifically, the first connecting portion 304a1, the third transition portion 304a3, and the second connecting portion 304a5 are formed by stacking and hot-pressing a plurality of metal sheets to form a single unit, thereby improving the reliability and strength of the connection between the busbar 304a and other components or the busbar 304a. The specific process is as follows: 1. Stack several metal sheets with preset shapes; 2. Define the areas for the first connecting portion 304a1, the first bend 304a2, the third transition portion 304a3, the second bend 304a4, and the second connecting portion 304a5; 3. Then, perform a hot pressing process on the areas corresponding to the first connecting portion 304a1, the third transition portion 304a3, and the second connecting portion 304a5 to form a single unit. The busbar 304a can be formed using this simple process. In other embodiments of the present application, the first connecting portion, the third transition portion 304a3, and the second connecting portion 304a5 are metal blocks, and the first bend and the second bend 304a4 are metal sheets. The metal sheets and the metal blocks are welded together to form a connector. This connector is formed by combining multiple components, with the first connecting portion, the first bend, the third transition portion 304a3, the second bend 304a4, and the second connecting portion 304a5 each having independent structures.

[0355] In order to ensure the flow capacity of the battery pack 10, in one embodiment of the present application, the thickness of the connector is 1.5 to 3.0 mm. In other types of battery packs 10, the thickness of the busbar 304a can be adjusted according to the flow requirements of the battery pack 10. The thickness of the connector can be 1.5 to 3.0 mm at any one of the first connecting portion, the first bending portion, the third transition portion 304a3, the second bending portion 304a4 and the second connecting portion 304a5, or the overall thickness of the connector can be between 1.5 and 3.0 mm. The thickness of the first bending portion and the second bending portion 304a4 can be the sum of the thickness of each metal sheet, or the distance between the two outermost metal sheets along the thickness direction.

[0356] In one embodiment of the present application, as shown in FIG60 , the width of the first connecting portion 304a1 is greater than the width of the first bent portion 304a2 in a first direction perpendicular to the first direction; and / or the width of the second connecting portion 304a5 is greater than the width of the second folded portion 304a4 in a second direction perpendicular to the first direction. Specifically, in the battery pack 10, the output terminals of the battery module 30 generally comprise electrode terminals, such as positive and negative terminals. Multiple batteries are connected in series or in parallel via connecting tabs to form the battery module 30. The positive terminal of one of the two outermost batteries serves as the positive terminal of the battery module, and the negative terminal of the other serves as the negative terminal of the battery module. The width of the second connecting portion 304a5 in the first direction perpendicular to the first direction being greater than the width of the second folded portion 304a4 increases the connection area between the busbar 304a and the output terminals of the battery module 30, improving connection reliability and reducing the risk of the busbar 304a becoming detached. In one embodiment of the present application, as shown in Figure 60, the first direction is perpendicular to the second direction, so the width of the second connecting portion 304a5 in the second direction (i.e., the length of a in Figure 59) is greater than the width of the second bending portion 304a4 in the second direction (i.e., the length of b in Figure 60).

[0357] In one embodiment of the present application, as shown in Figures 59 and 60 , the projection of the third transition portion 304a3 along its thickness direction is rectangular. This rectangular projection of the third transition portion 304a3 along its thickness direction can improve the current flow capacity of the busbar 304a. Furthermore, in another embodiment of the present application, as shown in Figure 61 , the projection of the third transition portion 304a3 along its thickness direction is a quarter circle. This quarter circle projection of the third transition portion 304a3 along its thickness direction facilitates processing and reduces manufacturing costs. In this embodiment of the present application, the third transition portion 304a3 can also be designed with other shapes, and the specific choice can be determined based on actual needs.

[0358] In one embodiment of the present application, at least one of the first connection portion 304a1 and the second connection portion 304a5 is provided with a recess 304a6. Specifically, as shown in the figure, the first connection portion 304a1 and the second connection portion 304a5 are used to connect to the battery module 30, etc., and the conventional connection method generally chooses welding, that is, by melting part of the metal of the busbar 304a to achieve the connection between the busbar 304a and the battery module 30 and other components. However, the welding process will be affected by the thickness of the busbar 304a, that is, the thicker the busbar 304a, the greater the welding power required. Users often only have fixed-power welding equipment. Therefore, under the requirements of the welding process, the first connection portion 304a1 and the second connection portion 304a5 need to be thinned to reduce the difficulty and requirements of the welding process. Therefore, the busbar 304a disclosed in the embodiment of the present application is provided with a recess 304a6 in at least one of the first connecting portion 304a1 and the second connecting portion 304a5 to reduce the thickness of the first connecting portion 304a1 or the second connecting portion 304a5, thereby reducing welding requirements. Furthermore, the busbar 304a only reduces the thickness of the welding area by providing the recess 304a6, and no thickness reduction is performed on other areas. This design can also ensure the overall current flow capacity of the busbar 304a. As shown in Figure 59, both the first connecting portion 304a1 and the second connecting portion 304a5 are provided with the recess 304a6 to improve the connection reliability with the output terminal of the battery module 30 and improve the connection reliability with other components (such as other busbars 304a).

[0359] Furthermore, as shown in FIG59 , there are multiple recesses 304a6. By providing multiple recesses 304a6 on the connecting portion, the difficulty of welding the connecting portion at multiple locations is reduced, thereby improving the reliability of the connection between the busbar 304a and other components or other busbars 304a. Furthermore, as shown in FIG59 , the multiple recesses 304a6 are arranged along a first direction. Since the busbar 304a is welded in the recesses 304a6 area, the arrangement of the multiple recesses 304a6 along the first direction can improve the reliability of the weld and reduce the risk of the busbar 304a falling off.

[0360] Furthermore, to enable the user to more accurately determine the welding position, as shown in FIG59 , in the embodiment disclosed herein, a positioning hole 304a7 is also provided within the recess 304a6. The user can use the alignment of the recess 304a6 and the positioning hole 304a7 to determine whether the busbar 304a matches the lead-out terminal of the battery module 30, thereby ensuring reliability during subsequent welding. Furthermore, the positioning hole 304a7 can also be provided in other areas of the busbar 304a, and the specific location can be determined based on specific needs. Its purpose is to enable the busbar 304a to be positioned accurately during fixed assembly, thereby improving the accuracy of busbar 304a assembly.

[0361] In one embodiment of the present application, as shown in FIG59 , fixing holes 304a8 are provided on the first connecting portion 304a1 and the second connecting portion 304a5. The busbar 304a can be fixed to the battery module 30 or other components through the fixing holes 304a8 to improve the stability of the busbar 304a. Furthermore, as shown in FIG59 , the fixing holes 304a8 are provided on the connecting portion of the first connecting portion 304a1 and the second connecting portion 304a5 that is not connected to the output end of the battery module 30. In addition, in another example of the present application, as shown in FIG59 , notches 304a9 are provided on the edges of the first connecting portion 304a1 and / or the second connecting portion 304a5. The busbar 304a can be snapped into contact with the battery module 30 or other components through the edge notches 304a9, thereby achieving simultaneous positioning and fixing. In addition, in other embodiments of the present application, the first connecting portion 304a1 and / or the second connecting portion 304a5 can also be fixed by other fixing structures, such as snap-on, embedded fixation, etc. The specific fixing method can be adjusted according to user needs.

[0362] In the embodiment of the present application, the bending angle between the first bending portion 304a2 and the second bending portion 304a4 is greater than or equal to 0° and less than or equal to 360°. Specifically, as shown in Figure 62, the first connecting portion 304a1 changes its relative position with the third transition portion 304a3 by bending the first bending portion 304a2, and the second connecting portion 304a5 changes its relative position with the third transition portion 304a3 by bending the second bending portion 304a4. The first connecting portion 304a1 can rotate along a third direction perpendicular to the first direction via the first bending portion 304a2, and the second connecting portion 304a5 can rotate along a third direction perpendicular to the second direction via the second bending portion 304a4. The specific positions of the first connecting portion 304a1 and the second connecting portion 304a5 can be determined based on the specific turning angles of the first bending portion 304a2 and the second bending portion 304a4. Therefore, the bending angle refers to the angle between the initial position of the first connecting portion 304a1 and the position of the first connecting portion 304a1 after the first bending portion 304a2 is bent; or the angle between the initial position of the second connecting portion 304a5 and the position of the second connecting portion 304a5 after the second bending portion 304a4 is bent. The third direction is the thickness direction of the third transition portion 304a3 of the busbar 304a, such as the Z direction shown in Figure 62.

[0363] In an embodiment of the present application, the battery pack 10 includes a plurality of battery modules 30 and the aforementioned busbar 304a. The battery modules 30 are adapted to output power via the busbar 304a, i.e., the battery modules 30 are electrically connected to the busbar 304a. As shown in Figures 64 and 65, two battery modules 30 within the battery pack 10 are connected via the busbar 304a. Specifically, the battery pack 10 includes a battery tray 20, within which the plurality of battery modules 30 are located. The battery tray 20 is provided with structural beams 22 that divide the battery tray 20 into a plurality of battery accommodating spaces 21. The battery modules 30 are located within the battery tray 20. The battery modules 30 within two adjacent battery accommodating spaces 21 are connected via the busbar 304a, thereby forming a series or parallel connection between the two battery modules 30. The output terminals of the battery modules are the positive and negative terminals. The positive terminal of one battery module 30 is connected to the negative terminal of another battery module 30 via the busbar 304a, thereby forming a series connection between the two battery modules 30.

[0364] In other embodiments disclosed herein, the battery module 30 is further electrically connected to other electrical components via a busbar 304a. For example, a distribution box, a battery management system, and a front-drive connector are examples. The assembly of the busbar 304a is similar to that of the first embodiment described above and will not be further described.

[0365] The battery pack 10 disclosed in the present application is provided with the above-mentioned form of bus 304a to ensure the connection between the battery modules 30 under the premise of limited space in the battery pack 10, thereby reducing the difficulty of connecting the battery modules 30 and at the same time reducing the volume of the space in the battery pack 10, thereby improving the volume utilization of the battery pack 10.

[0366] In the embodiments of the present application, there are multiple ways to connect the busbars. Specifically, in the first embodiment disclosed in the present application, as shown in Figures 19 to 26, in an optional embodiment, one of the busbars is a first connecting member 321, and the other busbar is a second connecting member. The first connecting member 321 is provided with a first positioning hole 3211; the second connecting member 322 is provided with a second positioning hole 3321; the adapter is provided with a first boss 3031 and a second boss 3032; the first boss 3031 corresponds to the shape of the first positioning hole 3211, and the second boss 3032 corresponds to the shape of the second positioning hole 3321.

[0367] Referring to Figures 19 to 26, the connection structure of the battery pack 10 of this embodiment includes: a first connector 321, a second connector 322, and an adapter. The first connector 321 is provided with a first positioning hole 3211, the second connector 322 is provided with a second positioning hole 3321, and the adapter is provided with a first boss 3031 and a second boss 3032. The first boss 3031 corresponds in shape to the first positioning hole 3211, and the second boss 3032 corresponds in shape to the second positioning hole 3321. That is, if the first boss 3031 is circular, the first positioning hole 3211 is also circular. If the first boss 3031 is triangular, the first positioning hole 3211 is also triangular. The corresponding form of the second boss 3032 and the second positioning hole 3321 is similar to the above. As more clearly seen in Figure 16 , when the first and second battery modules need to be electrically connected, the first boss 3031 is inserted into the first positioning hole 3211, and the second boss 3032 is inserted into the second positioning hole 3321. This secures the position of the first connector 321 and the second connector 322. With this electrical connection structure, if additional connection points are needed, simply increase the number of bosses on the adapter and the number of connectors accordingly. This eliminates the need for a pair of connectors between every two connectors, reducing the number of parts. When the first and second battery modules need to be connected to a distribution box, only three connectors are required: the first connector 321, the second connector 322, and the adapter. This eliminates the need for a pair of connectors between the first and second battery modules and a pair between the second battery module and the distribution box, totaling four connectors. This effectively reduces the number of components and eases connection complexity. This beneficial effect will be further described in detail below with reference to specific examples.

[0368] Optionally, when the first connecting member 321 and the second connecting member 322 are connected to the adapter, there is no overlapping portion between the first connecting member 321 and the second connecting member 322 in the height direction.

[0369] Referring to Figures 19 and 26, when the first connecting member 321, the second connecting member 322 and the adapter are connected, there is no overlapping part in the height direction between the first connecting member 321 and the second connecting member 322. The advantage of this structure is that in the subsequent welding process, the two connecting members will not block each other due to overlap. If there is a welding defect between the first connecting member 321 and the adapter, or a welding defect between the second connecting member 322 and the adapter, the welding defect can be discovered in time.

[0370] Optionally, the first connecting member 321 includes a first positioning portion 3212, a first positioning hole 3211 is opened on the first positioning portion 3212, the first positioning hole 3211 is a waist-shaped hole, and the first boss 3031 is a waist-shaped boss; and / or the second connecting member 322 includes a second positioning portion 3322, a second positioning hole 3321 is opened on the second positioning portion 3322, the second positioning hole 3321 is opened on the second positioning portion 3322, the second positioning hole 3321 is a waist-shaped hole, and the second boss 3032 is a waist-shaped boss.

[0371] As can be seen from Figures 19-21, the first connector 321 includes a first positioning portion 3212, which has a first positioning hole 3211 formed therein. The first positioning hole 3211 is a waist-shaped hole, and accordingly, the first boss 3031 is a waist-shaped boss. The waist-shaped shape makes it easy to observe the assembly direction, thus achieving a fool-proof design.

[0372] As can be seen from Figures 22-24, the second connector 322 includes a second positioning portion 3322, which has a second positioning hole 3321 formed therein. The second positioning hole 3321 is a waist-shaped hole, and accordingly, the second boss 3032 is a waist-shaped boss. The waist-shaped shape makes it easy to observe the assembly direction, thus achieving a fool-proof design.

[0373] Optionally, the long axis of the first boss 3031 is arranged at an angle to the long axis of the adapter; and / or the long axis of the second boss 3032 is arranged at an angle to the long axis of the adapter.

[0374] Referring to Figure 25 , the long axis L1 of the first boss 3031 is angled relative to the long axis L3 of the adapter. That is, L1 and L3 are neither parallel nor coincident. This facilitates the installer to easily observe the assembly angle when assembling the first connector 321, thereby achieving a foolproof design. Similarly, the long axis L2 of the second boss 3032 can also be angled relative to the long axis L3 of the adapter, similarly facilitating the installer to easily observe the assembly angle when assembling the second connector 322, thereby achieving a foolproof design.

[0375] Optionally, when the first connecting member 321 and the second connecting member 322 are connected to the adapter, the sum of the areas of the first positioning portion 3212 and the second positioning portion 3322 is smaller than the area of ​​the adapter.

[0376] Referring to Figure 26 , when the first and second connectors 321 and 322 are connected to the adapter, the sum of the areas of the first positioning portion 3212 and the second positioning portion 3322 is smaller than the area of ​​the adapter. In other words, on the plane where the first and second bosses 3031 and 3032 are located, the first and second positioning portions 3212 and 3322 do not completely cover the adapter. A portion of the adapter needs to be exposed, making it easier to observe the connection reliability between the first and second connectors 321 and 322 and the adapter. This also provides clearance for other components, such as the sampling element, to connect to the adapter.

[0377] Optionally, the first connecting member 321 further includes a first transition portion 3213 , which is arranged at an angle to the first positioning portion 3212 ; and / or the second connecting member 322 further includes a second transition portion 3323 , which is arranged at an angle to the second positioning portion 3322 .

[0378] 19-21 , the first connecting member 321 further includes a first transition portion 3213 , which is arranged at an angle to the first positioning portion 3212 , that is, the first transition portion 3213 is not parallel to and does not overlap with the first positioning portion 3212 .

[0379] 22-24 , the second connecting member 322 further includes a second transition portion 3323 , which is arranged at an angle to the second positioning portion 3322 , that is, the second transition portion 3323 is not parallel to and does not overlap with the second positioning portion 3322 .

[0380] Optionally, when the first connecting member 321 and the second connecting member 322 are connected to the adapter, the first transition portion 3213 and the second transition portion 3323 are respectively located on both sides of the adapter.

[0381] Referring to Figure 26, when the first and second connectors 321 and 322 are connected to the adapter, the first transition portion 3213 and the second transition portion 3323 are located on either side of the adapter. After the first boss 3031401 is inserted into the first positioning hole 3211 and the second boss 3032 is inserted into the second positioning hole 3321, the first transition portion 3213 and the second transition portion 3323 are located on either side of the adapter. In this way, the first transition portion 3213 and the second transition portion 3323 can assist in positioning the first and second connectors 321 and 322, respectively. Furthermore, the compression of the two transition portions by surrounding components can help secure the first and second connectors 321 and 322 to the adapter in the proper position, thus preventing subsequent problems such as cold welding and weld cracking.

[0382] Optionally, the first connecting member 321 further includes a first connecting portion 3215 , which is spaced apart from the first transition portion 3213 ; and / or the second connecting member 322 further includes a second connecting portion 3325 , which is spaced apart from the second transition portion 3323 .

[0383] As shown in Figures 19-21, the first connector 321 further includes a first bent portion 3214 disposed at an angle to both the first positioning portion 3212 and the first transition portion 3213; and a first connecting portion 3215 disposed at an angle to the first bent portion 3214. The first connecting portion 3215 is spaced apart from the first transition portion 3213. This spacing can be achieved by either stamping or welding.

[0384] As can be seen from Figures 22 to 24, the second connector 322 further includes a second bent portion 3324, which is angled relative to both the second positioning portion 3322 and the second transition portion 3323; and a second connecting portion 3325, which is angled relative to the second bent portion 3324. The second connecting portion 3325 is spaced apart from the second transition portion 3323. This spacing can be achieved by either stamping or welding.

[0385] Optionally, when the first connecting member 321 and the second connecting member 322 are connected to the adapter, the first connecting portion 3215 is farther from the adapter than the first transition portion 3213 , and the second connecting portion 3325 is farther from the adapter than the second transition portion 3323 .

[0386] As shown in Figure 26, after the first and second connectors 321 and 322 are connected to the adapter, the first connection portion 3215 and the second connection portion 3325 are parallel and located on either side of the adapter. The first connection portion 3215 is further away from the adapter than the first transition portion 3213, and the second connection portion 3325 is further away from the adapter than the second transition portion 3323. This structural advantage is that it not only facilitates the connection of the two connectors to the surrounding wiring harness, but also keeps the connection points of the two connectors and the surrounding wiring harness as far apart as possible, reducing the risk of arcing and short circuits.

[0387] Optionally, the first positioning portion 3212 has a first edge 3216 parallel to the length direction of the first positioning hole 3211, and the second positioning portion 3322 has a second edge 3326 parallel to the length direction of the second positioning hole 3321. When the first connecting member 321, the second connecting member 322 and the adapter are connected, there is a gap between the first edge 3216 and the second edge 3326.

[0388] As can be seen in Figure 17, after the first and second connectors 321 and 322 are connected to the adapter, a gap exists between the first edge 3216 and the second edge 3326. This structure allows the two connectors to intersect but not overlap, making it easier to simultaneously observe whether the two connectors have detached from the adapter or fallen off during the subsequent welding process.

[0389] In order to improve the connection strength, after the first boss 3031 is inserted into the first positioning hole 3211 and the second boss 3032 is inserted into the second positioning hole 3321, the first connecting member 321 and the adapter are welded along the edge of the first boss 3031 and the first positioning hole 3211; the second connecting member 322 and the adapter are welded along the edge of the second boss 3032 and the second positioning hole 3321.

[0390] In a second embodiment disclosed herein, as shown in FIG65 , the battery pack 10 includes at least a first battery module and a second battery module. The busbar 304a includes a first connector 321 and a second connector 322. One end of the first connector 321 is electrically connected to the first battery module, the other end of the first connector 321 is electrically connected to one end of the second connector 322, and the other end of the second connector 322 is electrically connected to the second battery module. Furthermore, in one embodiment of the present application, as shown in FIG63 and FIG65 , the other end of the first connector 321 is stacked and connected to one end of the second connector 322. Specifically, the first connecting portion 304a1 of the first connector 321 and the first connecting portion 304a1 of the second connector 322 are stacked and electrically connected by welding or fixing. The first connecting portion 304a1 of the first connector 321 and the first connecting portion 304a1 of the second connector 322 are stacked on the structural beam 22, thereby supporting the first and second connectors 321 and 322 via the structural beam 22. The first connector 321 and the second connector 322 are both insulated from the structural beam 22 to ensure the safety of the busbar 304a. The second connector 304a5 of the first connector 321 is electrically connected to the output terminal of the first battery module, and the second connector 304a5 of the second connector 322 is electrically connected to the output terminal of the second battery module. In addition, in this embodiment, the first connection portion 304a1 of the first connection member 321 is electrically connected to the first connection portion 304a1 of the second connection member 322, the bending angle of the first bending portion 304a2 of the first connection member 321 is 0-90°, the second connection portion 304a5 of the first connection member 321 is electrically connected to the first battery module, and the bending angle of the second bending portion 304a4 of the first connection member 321 is 90°-180°; and / or, the bending angle of the first bending portion 304a2 connected to the second connection member 322 is 0-90°, the second connection portion 304a5 of the second connection member 322 is electrically connected to the second battery module 201, and the bending angle of the second bending portion 304a4 of the second connection member 322 is 90°-180°. Furthermore, in one embodiment of the present application, the first bend portion 304a2 of the first connector 321 has a bend angle of 0-90°, and the second bend portion 304a4 of the first connector 321 has a bend angle of 90°-180°. Furthermore, the first bend portion 304a2 of the second connector 322 has a bend angle of 0-90°, and the second bend portion 304a4 of the second connector 322 has a bend angle of 90°-180°. The selection of these angles is primarily determined by the location of the battery module 30. Because the space between the battery module 30 and the structural beam 22 is limited, the bend angle of the busbar 304a near the battery module 30 is greater than 90 degrees to meet the required spacing between the battery module 30 and the structural beam 22.The bending angle of the bent portion near the connection of the two busbars 304a is mainly based on the structural design of the structural beam 22. Generally, the cross section of the structural beam 22 is rectangular, so the bending angle of the bent portion is required to be less than 90 degrees.

[0391] For the above embodiment, the assembly process is as follows: 1. The second connection portion 304a5 of the first connection member 321 is electrically connected to the output end of the first battery module; 2. The first connection member 321 is bent through the second bending portion 304a4 so that the second connection portion 304a5 is arranged parallel to the third transition portion 304a3; 3. The first connection portion 304a1 of the first connection member 321 is bent through the first bending portion 304a2 so that the first connection portion 304a1 is arranged on the top surface of the structural beam 22; 4. The second connection member 322 is processed according to the above steps 1-3 so that the output end of the second battery module is electrically connected to the second connection member 322, and the first connection portion 304a1 of the second connection member 322 is arranged on the top surface of the structural beam 22 and stacked with the first connection portion 304a1 of the first connection member 321; 5. The first connection portion 304a1 of the first connection member 321 and the first connection portion 304a1 of the second connection member 322 are welded.

[0392] In the third embodiment of the present application, the first and second connectors can also be aligned horizontally, contacting only in the horizontal direction to connect them together. In this case, the connection is also located at the end of the structural beam away from the tray. Otherwise, the assembly of the other connectors is consistent with the second embodiment described above.

[0393] In summary, since the tray longitudinal beams and tray transverse beams on the tray divide the storage space into multiple battery storage spaces, each battery pack is arranged in a battery storage space, so when connecting the battery packs in the two battery storage spaces, it is necessary to use the connection method disclosed in the first embodiment or the second embodiment mentioned above.

[0394] In order to ensure the independence of the two battery accommodating spaces, it is necessary to seal the structural beam connecting the two battery packs.

[0395] Therefore, in one embodiment of the present application, the tray crossbeam 223 includes a separator body 22301 and an insulating assembly 22302. The separator body 22301 is disposed on the side beam structure 25 and has a notch. The insulating assembly 22302 is used to block the connection notch. The insulating assembly 22302 is used to allow the connection assembly connected to the battery module 30 to pass through.

[0396] Referring to Figure 31 , a base plate 23 is disposed at the bottom of the battery tray 20 and is used to support the battery module 30. Side beam structures 25 are disposed around the base plate 23 to form a mounting cavity. For example, the side beam structures 25 are disposed at the edges of the base plate 23 and are generally annular.

[0397] The bottom plate 23 is extruded from a metal material, such as aluminum, and is welded to the side beam structure 25 by, for example, circumferential arc welding or laser welding. The side beam is configured as an annular structure, such as a rectangular or circular shape. This application does not limit the specific shape of the side beam, as long as the side beam and bottom plate 23 cooperate to form a receiving cavity.

[0398] As shown in Figure 31, the tray cross beam 223 includes four tray cross beams 223 and one tray longitudinal beam 224, forming six battery accommodating spaces 21 in the battery tray 20. The tray longitudinal beam 224 is arranged at the centerline of the tray transverse side beam 221, and the tray longitudinal beam 224 is perpendicular to the tray transverse side beam 221. The two ends of the tray longitudinal beam 224 are respectively fixedly connected to the tray transverse side beam 221.

[0399] 31-34 , at least one pallet crossbeam 223 is provided. When multiple pallet crossbeams 223 are provided, the multiple pallet crossbeams 223 are, for example, arranged in parallel. The pallet crossbeam 223 is disposed within the side beam structure 25 and is used to separate the bottom plate 23 into at least two battery accommodating spaces 21 , each of which is used to accommodate a battery module 30 .

[0400] The pallet crossbeam 223 includes a separator body 22301 and an insulating assembly 22302. As shown in Figures 31 and 34 , the end of the separator body 22301 near the side beam structure 25 is fixedly connected to the side beam structure 25, while the side of the separator body 22301 near the bottom plate 23 abuts the bottom plate 23. Alternatively, the side of the separator body 22301 near the bottom plate 23 can be fixedly connected to the bottom plate 23 by welding, bonding, or other methods.

[0401] The insulating component 22302 is arranged on the separator body 22301, and the separator body 22301 is provided with a notch, and the insulating component 22302 is used to block the notch. It should be noted that the insulating component 22302 blocks the notch position of the separator body 22301, so that the gas in the accommodating cavity on both sides of the tray beam 223 is difficult to circulate at the connection position between the separator body 22301 and the insulating component 22302. Furthermore, the insulating component 22302 and the separator body 22301 are airtightly connected. The sealed connection means that a sealing structure is formed at the connection position between the separator body 22301 and the insulating component 22302, and the gas in the battery accommodating space 21 on both sides of the first separator cannot circulate at the connection position between the separator body 22301 and the insulating component 22302.

[0402] In one embodiment of the present application, the separator body 22301 is made of a metal material, such as steel, which helps to improve the structural strength of the separator body 22301. The insulating component 22302 is made of, for example, a rubber material, which helps to provide insulation protection for the electrical connection position of the battery module 30. It also helps to reduce the weight of the separator device, and thus reduce the weight of the battery tray 20, achieving a lightweight battery pack 10 after assembly. In addition, making the insulating component 22302 of a rubber material also helps to improve the sealing effect between the separator body 22301 and the insulating component 22302.

[0403] Referring to Figure 32 , each battery accommodation space 21 is provided with a battery module 30. The battery modules 30 located on both sides of the tray crossbeam 223 are connected by connectors. These connectors are connected to the electrode terminals of the battery modules 30, for example. These connectors can be busbars or wires made of conductive metal materials such as copper, aluminum, iron, nickel, copper alloys, or aluminum alloys.

[0404] The insulating assembly 22302 is used for the connectors connected to the battery module 30 to pass through.

[0405] Furthermore, the insulating component 22302 includes an insulating body, which is sealed to the separator body 22301 , and an escape area is provided on the insulating body for allowing a connection component connected to the battery module 30 to pass through.

[0406] Furthermore, as shown in FIG32 , the insulating assembly 22302 includes an insulating body sealedly connected to the separator body 22301. The insulating body is made of, for example, rubber material. The insulating body and the separator body 22301 are fixed, for example, by gluing or welding.

[0407] The insulating body is provided with an escape zone, which is, for example, provided at the location of the battery cells of the battery module 30. The escape zone passes through the insulating body.

[0408] The avoidance area is used for the connection components connected to the battery module 30 to pass through. At least part of the connection components are located in the avoidance area, and the two ends of the connector extend to the two sides of the insulation component 22302 to connect the battery modules 30 located on both sides of the insulation component 22302.

[0409] For example, the number of insulating components 22302 is one. Of course, two or more insulating components 22302 may also be provided. For example, the number of avoidance zones is one. Of course, two or more avoidance zones may also be provided.

[0410] It should be noted that, in this application, the number of insulating components 22302 and avoidance zones does not need to correspond one to one. That is, when there is one insulating component 22302, there can be one avoidance zone, or two or more avoidance zones.

[0411] Optionally, the size of the avoidance zone is adjusted according to the size of the connection component to reduce the gap when the connection component is located in the avoidance zone, thereby improving the sealing effect of the electromagnetic accommodation space.

[0412] Optionally, the insulating component 22302 includes a first insulating member 22303 and a second insulating member 22304, wherein the first insulating member 22303 is disposed on the separator body 22301, and the second insulating member 22304 is disposed on the first insulating member 22303;

[0413] An escape area is provided on at least one of the first insulating member 22303 and the second insulating member 22304 .

[0414] 32-33 , the insulating assembly 22302 includes a first insulating member 22303 and a second insulating member 22304 that are stacked. The first insulating member 22303 is disposed on the separator body 22301 . The first insulating member 22303 and the separator body 22301 are fixedly connected, for example, by snapping.

[0415] The second insulating member 22304 is disposed on the side of the first insulating member 22303 away from the separator body 22301, that is, the second insulating member 22304 is disposed above the first insulating member 22303, as shown in Figure 32. The second insulating member 22304 and the first insulating member 22303 are connected by a snap-fit ​​mechanism. Referring to Figure 33, a protrusion is provided on the side of the first insulating member 22303 near the second insulating member 22304, and a slot is provided on the second insulating member 22304 that snaps into place with the protrusion, thereby achieving a snap-fit ​​connection between the first insulating member 22303 and the second insulating member 22304.

[0416] 32 , a clearance zone is provided on at least one of the first insulating member 22303 and the second insulating member 22304. In other words, the clearance zone may be formed only on the first insulating member 22303, only on the second insulating member 22304, or on both the first insulating member 22303 and the second insulating member 22304.

[0417] In the present application, by configuring the insulating assembly 22302 to include a first insulating member 22303 and a second insulating member 22304, that is, configuring the insulating assembly 22302 as a separate body, during assembly, the connector and the battery module 30 can be assembled first, and then the battery module 30 connected by the connector can be placed as a whole on the first insulating member 22303, and then the second insulating member 22304 can be installed. This improves the ease of installation of the insulating assembly 22302, reduces the difficulty of processing the connector, and improves processing efficiency.

[0418] In one embodiment of the present application, the avoidance area includes a first avoidance area 22306 and a second avoidance area 22307. The first avoidance area 22306 and the second avoidance area 22307 accommodate a bus bar and wires respectively.

[0419] The first avoidance area 22306 is, for example, for a busbar connected to the battery module 30 to pass through, and the second avoidance area 22307 is, for example, for a wire connected to the battery module 30 to pass through. Alternatively, the first avoidance area 22306 may be for a wire connected to the battery module 30 to pass through, while the second avoidance area 22307 may be for a busbar connected to the battery module 30 to pass through. This application does not impose any specific limitations on this.

[0420] In addition, the present application does not limit the locations of the first avoidance area 22306 and the second avoidance area 22307. The second avoidance area 22307 is, for example, disposed on a side of the second insulating member 22304 away from the first insulating member 22303. Specifically:

[0421] In one embodiment, as shown in FIG32 , the first avoidance area 22306 is formed on a side of the first insulating member 22303 close to the second insulating member 22304 ;

[0422] In one embodiment, the first avoidance area 22306 is formed on the first insulating member 22303 and the second insulating member 22304 and is located between the first insulating member 22303 and the second insulating member 22304;

[0423] In one embodiment, the first avoidance area 22306 is formed on a side of the second insulating member 22304 close to the first insulating member 22303 .

[0424] It should be noted that the insulating component 22302 can also include a larger number of insulating parts, such as a third insulating part and a fourth insulating part. This application does not specifically limit the number of insulating parts in the insulating component 22302. The structure of the insulating component 22302 is selected according to the actual structure.

[0425] The present application sets a first insulating member 22303 and a second insulating member 22302, and forms an avoidance zone between the first insulating member 22303 and the second insulating member 22304, which is conducive to achieving partitioned insulation protection for various connecting components between adjacent battery modules 30, and is conducive to setting the shape of the avoidance zone according to the specific shape of the connecting component to reduce the gap after the connecting component is placed in the avoidance zone, thereby improving the sealing effect of the battery accommodating space 21 and further improving the exhaust effect.

[0426] Optionally, the insulating component 22302 further includes a limiting member 22308, which is disposed on the second insulating component 22304 and is used to limit the connection component within the avoidance zone.

[0427] 32-33 , a second avoidance area 22307 and a limiting member 22308 are provided on a side of the second insulating member 22304 away from the first insulating member 22303 , and the second avoidance area 22307 is opened on a side away from the first insulating member 22303 .

[0428] Optionally, the limiting member 22308 covers the second avoidance area 22307, and the limiting member 22308 is fixedly connected to the second insulating member 22304. The limiting member 22308 is fixedly connected to the second insulating member 22304, for example, by a snap-fit ​​structure, as shown in FIG35.

[0429] Connectors such as wires connected to the battery module 30 are provided in the second avoidance area 22307, and the limiting member 22308 is used to limit the connectors in the second avoidance area 22307 so as to limit the connectors in the second avoidance area 22307, as shown in FIG36 .

[0430] In this application, a limiting member 22308 is set on the side of the second insulating member 22304 away from the first insulating member 22303, and the limiting member 22308 cooperates with the second avoidance area 22307 to limit the connecting member in the second avoidance area 22307, thereby further improving the limiting effect and insulation effect of the insulating component 22302 on the connecting member.

[0431] Optionally, sealant is provided in at least one of the first insulating member 22303 and the second insulating member 22304, and the sealant is used to seal the connection component in the avoidance area.

[0432] 32-33 , in one embodiment of the present application, a second insulating member 22304 is disposed above a first insulating member 22303. The second insulating member is provided with at least one third through hole 22305, which penetrates the second insulating member 22304 to connect the first insulating member 22303 located below the second insulating member 22304 with the outside world.

[0433] Sealant is applied to the third through hole 22305, bonding the first insulating member 22303 to the second insulating member 22304 and sealing the gap between the connector and the escape area. This improves the overall sealing of the insulating assembly 22302, further enhancing the sealing of the battery compartment 21 and improving the ventilation of the battery tray 20.

[0434] Optionally, a accommodating cavity is provided on one side of the first insulating member 22303 close to the second insulating member 22304, and the accommodating cavity is provided in conjunction with the third through hole 22305, as shown in Figure 5. The accommodating cavity is used to accommodate sealant, further sealing the gap between the connecting component and the avoidance area, thereby improving the sealing of the battery accommodating space 21.

[0435] In the present application, by setting a sealant between the first insulating part 22303 and the second insulating part 22304, it is beneficial to seal the gap between the connector and the avoidance area, thereby improving the sealing of the battery accommodating space 21 in the battery tray 20, so that the exhaust in the battery accommodating space 21 is independent of each other, and the airflow is discharged from the position of the one-way valve 26 to the exhaust channel 2212 according to a preset route, thereby improving the exhaust effect of the battery tray 20.

[0436] When installing the insulating assembly 22302 of the battery tray 20 provided in the present application, the first insulating member 22303 is first installed on the separator body 22301, and then the busbars between adjacent battery modules 30 are connected and overlapped in the first avoidance area 22306. The second insulating member 22304 is then installed on the first insulating member 22303, and the second insulating member 22304 limits the busbars in the first avoidance area 22306. Thereafter, the wires between adjacent battery modules 30 are placed in the second avoidance area 22307 and positioned by the limiting member 22308. Finally, sealant is injected into the third through hole 22305 of the second insulating member 22304 to seal the area between the first insulating member 22303 and the second insulating member 22304.

[0437] In other examples of the present application, referring to Figures 73 to 75 , the insulating assembly 22302 includes a first connecting assembly 2251 , a second connecting assembly 2252 and a first shell 2253 .

[0438] The first connecting component 2251 includes a first connecting end and a second connecting end, and the first connecting end is suitable for electrically connecting to a first electrical component in one of the battery accommodating spaces 21 or the electrical accommodating space 28. The second connecting component 2252 includes a third connecting end and a fourth connecting end, and the third connecting end is suitable for electrically connecting to a second electrical component in another of the battery accommodating spaces 21 or the electrical accommodating space 28. Specifically, in one embodiment of the present application, the battery pack includes multiple battery accommodating spaces, and the first connecting end is suitable for electrically connecting to a first electrical component in one of the battery accommodating spaces 21. The second connecting component 2252 includes a third connecting end and a fourth connecting end, and the third connecting end is suitable for electrically connecting to a second electrical component in another of the battery accommodating spaces 21. In another embodiment of the present application, the first connecting end is suitable for electrically connecting to a first electrical component in a battery accommodating space 21. The second connecting component 2252 includes a third connecting end and a fourth connecting end, and the third connecting end is suitable for electrically connecting to a second electrical component in an electrical accommodating space 28.

[0439] An accommodating cavity is formed in the first shell 2253 , and the accommodating cavity has an open side.

[0440] The second and fourth connection ends are adapted to be received within the accommodating cavity via the open side, and the second and fourth connection ends are electrically connected to each other. The open side forms a glue injection port for injecting insulating glue into the accommodating cavity to cover the electrically connected second and fourth connection ends. It is worth noting that in actual use, insulating assembly 22302 may not be fully injected with insulating glue.

[0441] The first connecting end of the first connecting component 2251 and the third connecting end of the second connecting component 2252 are respectively connected to the adjacent battery accommodating space 21 and the electrical accommodating space 28, or the two electrical components in the battery accommodating space 28; the first shell 2253 is accommodated in the avoidance space.

[0442] In the aforementioned insulating component 22302, a accommodating cavity is formed in the first shell 2253, and the accommodating cavity has an open side. The second connection end and the fourth connection end can be accommodated in the accommodating cavity through the open side. Accordingly, the position where the third connection end and the fourth connection end are electrically connected is also located within the accommodating cavity. The open side can be used as a glue injection port for injecting insulating glue into the accommodating cavity to cover the second connection end and the fourth connection end after connection. In this way, due to the constraints of the first shell 2253, the position and amount of glue injection are determined and controllable, and after the glue injection is completed, the connection and insulation positions of the first connecting component 2251 and the second connecting component 2252 can form a regular shape, which is convenient for them to match the shape and position of other electrical components or structural elements. Accordingly, the battery pack 10 using the insulating component 22302 and the electrical equipment using the battery pack 10 can also take advantage of the excellent properties of the insulating component 22302.

[0443] In a specific embodiment, the electrical components may include a distribution box and a battery module 30. Accordingly, the battery pack 10 provided in this application may include a battery tray 20, an insulation component 22302, a distribution box and a battery module 30.

[0444] The distribution box can be housed in the electrical storage space 28, and the battery module 30 can be housed in the battery storage space 21. The battery module 30 includes a plurality of battery cells 101, which are used to store electrical energy to supply power to electrical devices. The distribution box, typically in the form of a distribution box, is used to connect, disconnect, and distribute power, and manage the charging of the battery module 30.

[0445] In a specific implementation, the battery pack 10 may include one battery module 30, or may include two or more battery modules 30. Each battery module 30 may include one battery cell 101. Typically, the battery module 30 includes multiple battery cells 101. The multiple battery cells 101 may be connected in series or in parallel according to the voltage output requirements of the battery pack 10. This can be set according to actual needs and is not limited here.

[0446] In some embodiments, the battery accommodating space 21 is used to accommodate the battery module 30. One of the battery accommodating spaces 21 is adjacent to the electrical accommodating space 28. The first connection end of the first connecting component 2251 is electrically connected to the distribution box, and the third connection end of the second connecting component 2252 is electrically connected to the battery module 30. In a specific implementation, the battery tray 20 is usually separated into an electrical accommodating space 28 and multiple battery accommodating spaces 21 by two or more partitions. The distribution box accommodated in the electrical accommodating space 28 is electrically connected to the battery module 30 in the adjacent battery accommodating space 21 through an insulating component 22302. Similarly, the two battery modules 30 located in two adjacent battery accommodating spaces 21 are also electrically connected through another insulating component 22302. The number of insulating components 22302 can be set according to requirements.

[0447] For example, the battery tray 20 is divided into one electrical accommodation space 28 and three battery accommodation spaces 21 by three partitions, and the battery pack 10 includes a distribution box and three battery modules 30 .

[0448] In some embodiments, the battery tray 20 includes a bottom plate 23, a plurality of side beams, and a plurality of tray cross beams 223. The plurality of side beams are connected to the bottom plate 23 and arranged along the circumference of the bottom plate. The plurality of side beams and the bottom plate 23 together define the battery accommodation space 21 and the electrical accommodation space 28.

[0449] A plurality of tray cross beams 223 are disposed in the battery tray 20 and arranged at intervals. The tray cross beams 223 serve as partitions to separate the battery tray 20 into a plurality of independent battery accommodation spaces 21 and electrical accommodation spaces 28 .

[0450] One side of the tray crossbeam 223 is fixedly connected to the bottom plate, reinforcing the battery pack 10. The escape space is a notch formed on the opposite side of the tray crossbeam 223 and extending through it. The inner wall of the notch is formed with a retaining portion corresponding to the first shell 2253. In practice, the retaining portion can be a separate retaining structure or the inner wall of the notch itself, as long as it can ensure the positioning and installation of the first shell 2253.

[0451] In some embodiments, a first engaging portion 2261 is formed on the outside of the first housing 2253. The first engaging portion 2261 is adapted to engage with an external device. Specifically, a latch hole may be formed on the inner wall of the notch of the tray crossbeam 223, and the first engaging portion 2261 may be formed as a buckle on the outside of the first housing 2253. The first housing 2253 is positioned and mounted to the notch of the tray crossbeam 223 through the engagement of the buckle and the latch hole. Of course, the positions of the buckle and the latch hole are interchangeable, and other equivalent structures may also be employed.

[0452] In some embodiments, the insulating assembly 22302 may further include a second shell 2251. The second shell 2251 is used to cooperate with the first shell 2253 to close the open side. The second shell 2251 may include a second clamping portion 2262, which is suitable for clamping and fixing with an external device. In a specific implementation, the second shell 2251 cooperates with the first shell 2253 to, on the one hand, close the open side of the first shell 2253, so that the portions of the first connecting assembly 2251 and the second connecting assembly 2252 located inside the first shell 2253 are coated with the injected insulating glue to form a regular shape. At the same time, it can also be used to fill the gap on the tray crossbeam 223. In a specific implementation, the first shell 2253 and the second shell 2251 can be made of insulating material to help ensure the insulation gap.

[0453] In some embodiments, the first connecting component 2251 and the second connecting component 2252 can be copper or aluminum busbars, and can be configured into a curved shape as needed to meet the requirements of electrically connecting different electrical components and adapting to shape and position relationships. For example, the first connecting component 2251 can include a first connecting segment 2256, a second connecting segment 2257, and a first extending segment 2258 connected between the first connecting segment 2256 and the second connecting segment 2257. The free end of the first connecting segment 2256 forms the first connecting end, and the free end of the second connecting segment 2257 forms the second connecting end. In addition, at least one of the first connecting segment 2256 and the second connecting segment 2257 forms a bend with the first extending segment 2258.

[0454] Accordingly, the second connecting assembly 2252 includes a third connecting segment 2259, a fourth connecting segment 2263, and a second extending segment 2260 connected between the third connecting segment 2259 and the fourth connecting segment 2263. The free end of the third connecting segment 2259 forms the third connecting end, and the free end of the fourth connecting segment 2263 forms the fourth connecting end. At least one of the third connecting segment 2259 and the fourth connecting segment 2263 forms a bend with the second extending segment 2260.

[0455] In some embodiments, the insulating assembly 22302 further includes a fixing member (not shown). The second connecting segment 2257 and the fourth connecting segment 2263 are sheet-like structures. When housed within the accommodating cavity, the second connecting segment 2257 and the fourth connecting segment 2263 at least partially overlap and are secured by the fixing member. For example, the second connecting segment 2257 and the fourth connecting segment 2263 are each provided with a fixing hole, through which the fixing member passes to secure the second connecting segment 2257 and the fourth connecting segment 2263. The fixing member can be a rivet, screw, or the like, and while achieving a fixed connection between the second connecting segment 2257 and the fourth connecting segment 2263, it can also serve as an auxiliary conductive connection.

[0456] In one embodiment of the present application, the structure of the sampling component should also be adaptively adjusted to ensure the reliability of the sampling. Specifically, as shown in Figures 66 to 72, the bus 304b is fixed to the base plate and electrically connected to the poles of the battery cell 101 to collect the electrical signals of the battery cell 101. The sampling unit includes a sampling harness and a receiver. The receiver is located at the outer edge of the base plate, and the sampling harness is connected between the receiver and the bus 304b to transmit the electrical signals collected by the bus 304b to the receiver. The receiver analyzes, stores and exchanges the received electrical signals with external devices to facilitate real-time monitoring of the status of each battery cell 101 to avoid adverse phenomena such as overcharging, over-discharging, and excessive temperature of the battery cell 101.

[0457] It is understandable that in some other embodiments, the battery pack 10 further includes a sealing cover (not shown in the figure), which is arranged opposite to the bottom plate and cooperates with the side wall and the bottom plate to form a closed receiving space.

[0458] Please refer to Figures 66 to 68, where Figure 68 is a schematic diagram of the planar structure of the bus 304b provided in an embodiment of the present application; Figure 69 is a schematic diagram of the planar structure of the conductive member 304b1 provided in an embodiment of the present application; and Figure 70 is a schematic diagram of the planar structure of the wiring member 304b11 provided in an embodiment of the present application.

[0459] As shown in Figures 68 to 70, the busbar 304b of the present application includes a conductive member 304b1 and a terminal 304b11. The conductive member 304b1 has two opposing ends, one of which is electrically connected to the pole of the battery cell 101, and the other end is provided with a protrusion 304b2. The terminal 304b11 includes a terminal tab 304b12 and a retaining portion 304b13. There are two retaining portions 304b13, which are arranged on opposite sides of the terminal tab 304b12. The terminal 304b11 is located at the end of the conductive member 304b1 where the protrusion 304b2 is provided, and the terminal tab 304b12 of the terminal 304b11 is affixed to the top surface 304b3 of the protrusion 304b2. Retaining portion 304b13 extends along connecting piece 304b12 in a direction closer to conductive member 304b1 and is fixedly connected to outer surface 304b4 of protrusion 304b2, thereby securing connecting piece 304b11 to conductive member 304b1. Retaining portion 304b13 can abut against outer surface 304b4 of protrusion 304b2 to achieve a fixed connection, or it can be snapped onto outer surface 304b4 of protrusion 304b2 to achieve a fixed connection.

[0460] It can be understood that the busbar 304b of the present application has a protrusion 304b2 set on the conductive member 304b1, and a corresponding retaining portion 304b13 is set on the wiring member 304b11, so that the retaining portion 304b13 and the protrusion 304b2 are fixed to each other, thereby limiting the relative position between the conductive member 304b1 and the wiring member 304b11, preventing the conductive member 304b1 from being displaced relative to the wiring member 304b11, thereby facilitating the subsequent welding process between the conductive member 304b1 and the wiring member 304b11 and improving installation efficiency.

[0461] It should be noted that the number and positions of the retaining portions 304b13 in the above embodiment are merely exemplary. In other embodiments of the present application, the number of retaining portions 304b13 is not limited to two, but may be one, three, or another number. Furthermore, the retaining portions 304b13 may be located not only on opposite sides of the terminal lug 304b12 but also on any side of the terminal lug 304b12. This application does not impose any particular limitations on this aspect.

[0462] The connection piece 304b11 further includes a connection hole 304b17, which is located at one end of the connection piece 304b11 away from the conductive piece 304b1 and at the side of the connection piece 304b12 away from the conductive piece 304b1. The connection hole 304b17 is connected to the sampling harness to transmit the collected signal to the receiver.

[0463] Please refer to Figures 70 and 71, where Figure 70 is a schematic diagram of the planar structure of the bus 304b provided in another embodiment of the present application; Figure 70 is a schematic diagram of the planar structure of the conductive part 304b1 provided in another embodiment of the present application.

[0464] As shown in Figures 70 and 71 , the busbar 304b of the present application includes a conductive member 304b1 and a terminal 304b11. The conductive member 304b1 has two opposing ends, one of which is electrically connected to the battery cell 101's pole, while the other end is provided with a groove 304b5. The terminal 304b11 includes a terminal tab 304b12 and a retaining portion 304b13. There are two retaining portions 304b13, located on opposite sides of the terminal tab 304b12. The terminal 304b11 is located at one end of the conductive member 304b1 where the groove 304b5 is provided, and the terminal tab 304b12 of the terminal 304b11 is attached to the bottom surface 304b6 of the groove 304b5. Retaining portion 304b13 extends along the direction from connecting piece 304b12 away from conductive member 304b1 and abuts against inner surface 304b7 of groove 304b5, thereby securing connecting piece 304b11 to conductive member 304b1. Connecting piece 304b11 also includes a wiring hole 304b17, located at the end of connecting piece 304b11 away from conductive member 304b1 and on the side of connecting piece 304b12 facing away from conductive member 304b1. Wiring hole 304b17 connects to the sampling harness to transmit the collected signal to the receiver.

[0465] It can be understood that the busbar 304b of the present application is provided with a protrusion 304b2 or a groove 304b5 on the conductive member 304b1, and a corresponding retaining portion 304b13 is provided on the terminal member 304b11, and the retaining portion 304b13 is made to abut against the outer surface 304b4 of the protrusion 304b2 or the inner surface 304b7 of the groove 304b5, so as to limit the relative position between the conductive member 304b1 and the terminal member 304b11, prevent the conductive member 304b1 from being displaced or rotated relative to the terminal member 304b11, thereby facilitating the subsequent welding process between the conductive member 304b1 and the terminal member 304b11 and improving installation efficiency.

[0466] In an optional embodiment, a protrusion 304b2 is provided on the conductive member 304b1, and a corresponding retaining portion 304b13 is provided on the wiring member 304b11, wherein a protrusion is also provided on the retaining portion 304b13, and two connecting holes are provided on the connecting plate, one of which is sleeved on the protrusion of the conductive member 304b1, and the other is sleeved on the protrusion of the wiring member 304b11, and the relative position between the conductive member 304b1 and the wiring member 304b11 is limited by the retaining portion 304b13.

[0467] In the embodiment shown in Figure 66, the retaining portions 304b13 are elastic, and the minimum distance between the two retaining portions 304b13 is less than the width of the protrusion 304b2. The two retaining portions 304b13 clamp the two sides of the protrusion 304b2 to secure the terminal 304b11. It will be appreciated that in this embodiment, based on the provision of the protrusion 304b2 on the conductive member 304b1 and the inherent elasticity of the retaining portions 304b13, the minimum distance between the two retaining portions 304b13 is set to be less than the width of the protrusion 304b2. Simultaneously, the two retaining portions 304b13 clamp the two sides of the protrusion 304b2. This utilizes the retaining portions 304b13's inherent elastic deformation to achieve an automatic press-fit between the retaining portions 304b13 and the outer surface 304b4 of the protrusion 304b2, thereby securing the terminal 304b11.

[0468] In the embodiment shown in Figure 69, the maximum distance between the two retaining portions 304b13 is greater than the width of the groove 304b5, and the two retaining portions 304b13 abut against the inner surface 304b7 of the groove 304b5 to secure the terminal 304b11. It will be appreciated that in this embodiment, based on the provision of the groove 304b5 on the conductive member 304b1 and the inherent elasticity of the retaining portions 304b13, the maximum distance between the two retaining portions 304b13 is set to be greater than the width of the groove 304b5, and the two retaining portions 304b13 abut against the inner surface 304b7 of the groove 304b5. This utilizes the inherent elastic deformation of the retaining portions 304b13 to achieve an automatic press-fit between the retaining portions 304b13 and the inner surface 304b7 of the groove 304b5, thereby securing the terminal 304b11.

[0469] Referring back to Figure 68, in one embodiment, the connector 304b11 includes a pre-bent section 304b16, which connects between the sidewall of the connector 304b12 and the retaining portion 304b13. The pre-bent section 304b16 has an arcuate cross-section. It will be appreciated that in this embodiment, the pre-bent section 304b16 serves as a transition structure at the junction of the sidewall of the connector 304b12 and the retaining portion 304b13. The arcuate cross-section of the pre-bent section 304b16 can reduce stress concentration and lower the risk of fracture at the junction of the sidewall of the connector 304b12 and the retaining portion 304b13.

[0470] Referring back to Figures 66 to 69, in one embodiment, the conductive member 304b1 includes two protrusions 304b8. The two protrusions 304b8 are located on the outer surfaces 304b4 on opposite sides of the protrusion 304b2, each protrusion 304b8 extending toward a corresponding retaining portion 304b13. Each retaining portion 304b13 includes a hollowed-out area 304b14. The position and number of the hollowed-out areas 304b14 correspond to the position and number of the protrusions 304b8, and each protrusion 304b8 extends into and abuts a corresponding hollowed-out area 304b14.

[0471] Referring back to Figures 69 and 70, in one embodiment, the conductive member 304b1 includes two protrusions 304b8, which are located on the inner surfaces 304b7 on opposite sides of the groove 304b5. Each protrusion 304b8 extends toward a corresponding retaining portion 304b13. Each retaining portion 304b13 includes a hollow area 304b14. The position and number of the hollow areas 304b14 correspond to the position and number of the protrusions 304b8, and each protrusion 304b8 extends into and abuts a hollow area 304b14.

[0472] In the above embodiment, a protrusion 304b8 is provided on the outer surface 304b4 of the protrusion 304b2 or the inner surface 304b7 of the groove 304b5. At the same time, a hollow area 304b14 is provided on the retaining portion 304b13 at a position corresponding to the protrusion 304b8. The protrusion 304b8 extends into and abuts the hollow area 304b14 to prevent the connecting member 304b11 from moving away from the conductive member 304b1, thereby further limiting the relative position of the conductive member 304b1 and the connecting piece.

[0473] As shown in Figures 71 and 72 , in one embodiment, the conductive member 304b1 includes slots 304b9 disposed on the outer surfaces 304b4 on opposite sides of the protrusion 304b2. The retaining portion 304b13 includes bosses 304b15. The position and number of the bosses 304b15 correspond to the position and number of the slots 304b9, with each boss 304b15 being configured to extend into and abut a respective slot 304b9. It will be appreciated that in this embodiment, the outer surface 304b4 of the protrusion 304b2 is recessed in a direction away from the retaining portion 304b13 to form the slots 304b9. At the same time, a boss 304b15 is provided at the position of the retaining portion 304b13 corresponding to the slot 304b9. The slot 304b9 and the boss 304b15 abut against each other to prevent the terminal 304b11 from moving away from the conductive member 304b1, thereby further limiting the relative position of the conductive member 304b1 and the connecting piece.

[0474] It should be noted that in an embodiment where the conductive member 304b1 is provided with a groove 304b5, the inner surface 304b7 of the groove 304b5 can be recessed in a direction away from the retaining portion 304b13 to form a latching groove 304b9, which can also achieve the effect of the above embodiment.

[0475] In one embodiment, when the conductive member 304b1 includes a protrusion 304b8, the projections of the hollow areas 304b14 of the two retaining portions 304b13 onto the surface of one of the retaining portions 304b13 partially overlap or are spaced apart from each other. In another embodiment, when the conductive member 304b1 includes a slot 304b9, the projections of the bosses 304b15 of the two retaining portions 304b13 onto the surface of one of the retaining portions 304b13 partially overlap or are spaced apart from each other.

[0476] It can be understood that in the above embodiment, based on the conductive member 304b1 including the protrusion 304b8 or the groove 304b5, the projections of the hollow areas 304b14 or the bosses 304b15 of the two retaining portions 304b13 on the surface of one of the retaining portions 304b13 are arranged to overlap or be spaced apart from each other, that is, the shapes of the hollow areas 304b14 or the bosses 304b15 of the two retaining portions 304b13 are set to be different or the positions of the hollow areas 304b14 or the bosses 304b15 of the two retaining portions 304b13 are set to be different, so that the wiring member 304b11 can be installed in a preset position with a preset posture, thereby avoiding the wiring member 304b11 from being installed upside down.

[0477] As shown in Figure 67, in one embodiment, the protrusion 304b2 is provided with a chamfer 304b20, which is provided on the top surface 304b3 of the protrusion 304b2. It will be appreciated that in this embodiment, the chamfer 304b20 on the top surface 304b3 of the protrusion 304b2 can be used to guide the retaining portion 304b13 toward the protrusion 304b2, thereby facilitating the assembly of the terminal 304b11 with the conductive member 304b1.

[0478] It should be noted that in another embodiment, when the conductive member 304b1 is provided with a groove 304b5 to fix the wiring member 304b11, the chamfer 304b20 can be provided at the notch of the groove 304b5 to guide the retaining portion 304b13 to extend into the groove 304b5, which can also make the assembly process of the wiring member 304b11 and the conductive member 304b1 easier.

[0479] As shown in FIG66 , in one embodiment, a positioning portion 304b18 is provided on the surface of the terminal piece 304b12 facing away from the conductive member 304b1. It will be appreciated that in this embodiment, the positioning portion 304b18 is provided on the surface of the terminal piece 304b11 facing away from the terminal piece 304b12, so that when welding the terminal piece 304b11 and the conductive member 304b1, the positioning portion 304b18 can be used to identify and accurately locate the desired welding point.

[0480] In the embodiment shown in FIG66 , the positioning portion 304b18 includes a positioning hole 304b19. Positioning posts 304b10 are provided on the surface of the conductive member 304b1 that mates with the terminal lug 304b12. Positioning posts 304b10 are positioned and shaped to match the positioning holes 304b19, allowing them to extend into the holes. It will be appreciated that in this embodiment, positioning holes 304b19 are provided on the terminal lug 304b11, and positioning posts 304b10 are provided on the surface of the conductive member 304b1 that mates with the terminal lug 304b12, allowing them to extend into the holes and abut against the inner surface of the holes, thereby defining the relative positions of the conductive member 304b1 and the terminal lug 304b11.

[0481] It should be noted that the structure of the above-mentioned positioning portion 304b18 is only introduced as an example. In some other embodiments, the positioning portion 304b18 can be set in any other form on the surface of the terminal 304b11 away from the terminal piece 304b12. For example, it can be a positioning point or other plane graphics, as long as it can realize the identification function to facilitate positioning.

[0482] In one embodiment, the retaining portion 304b13, the pre-bent section 304b16, and the connecting piece 304b12 are integrally formed. It is understood that by forming the retaining portion 304b13, the pre-bent section 304b16, and the connecting piece 304b12 as an integral structure, the retaining portion 304b13, the pre-bent section 304b16, and the connecting piece 304b12 can be directly stamped from the main body of the connecting piece 304b11, thereby simplifying the manufacturing process of the connecting piece 304b11 and improving the reliability of the connecting piece 304b11.

[0483] In one embodiment, the connection member 304b11 is made of nickel. It is understood that in this embodiment, based on the advantages of nickel such as good electrical conductivity, good welding performance, and oxidation resistance, the use of nickel as the connection member 304b11 can improve the reliability of the busbar 304b of the present application.

[0484] In one embodiment, the busbar 304b further includes an adapter, one end of which is fixedly connected to the conductive member 304b1 and the other end of which is connected to the pole of the battery cell 101, thereby realizing the function of transmitting electrical signals between the battery cell 101 and the conductive member 304b1.

[0485] In an optional embodiment, the battery pack 10 also includes a battery information collector, which is used to collect voltage information and / or temperature information of the battery module 30, wherein the number of temperature information collection points is the same on both sides of the tray longitudinal beam 224 of the battery tray 20.

[0486] In an optional embodiment, the bottom plate 23 of the battery tray 20 has a protective composite material with honeycomb aluminum sandwiched in the middle. Specifically, the bottom plate 23 includes a first inorganic-organic composite layer, a honeycomb core layer, and a second inorganic-organic composite layer that are stacked. The honeycomb core layer used in the bottom plate 23 can absorb energy and has a certain toughness, which significantly improves the ability of the bottom plate 23 to resist impact deformation and improves the utilization rate of the reserved buffer space at the bottom 23 of the battery tray 20; while the first inorganic-organic composite layer and the second inorganic-organic composite layer provide a certain strength, mechanical support and anti-corrosion protection for the honeycomb core layer while reducing the weight of the bottom plate. It can be seen that the effects of different layers are different. In order to coordinate the overall performance of the final bottom plate 23 better, this application satisfies a certain quantitative relationship between specific parameters such as the thickness and strength of each layer, so that the cooperation relationship between the layers can be fully coordinated to ensure that the protective performance of the bottom plate 23 is better while fully improving the lightweight degree of the bottom plate 23, thereby greatly improving the application prospects of the protective plate.

[0487] In addition, in other examples, the bottom plate 23 may also be made of a metal plate or a composite material plate.

[0488] In addition, in an embodiment of the present application, as shown in Figures 40-46, the pallet horizontal side beam 221 has a first deformation block 2214 and a second deformation block 2215, and there is a third spacing space 2216 between the first deformation block 2214 and the second deformation block 2215; the pallet longitudinal side beam 222 has a first through hole 2222, and the first deformation block 2214 and the second deformation block 2215 are inserted into the first through hole 2222; the battery tray 20 also includes a wedge block 22316, which is inserted into the third spacing space 2216. The wedge block 22316 squeezes the first deformation block 2214 and the second deformation block 2215. The first deformation block 2214 and the second deformation block 2215 are deformed after being squeezed and are fixed in the first through hole 2222. The pallet horizontal side beam 221 and the pallet longitudinal side beam 222 are connected together using the principle of mortise and tenon structure. At this point, even if welding is no longer performed, the first deformable block 2214, the second deformable block 2215, and the wedge block 22316 can effectively secure the connection. When welding is performed to improve connection reliability, the presence of the first deformable block 2214, the second deformable block 2215, and the wedge block 22316 significantly reduces the risk of welding slag, high-temperature deformation, and subsequent inconvenience in polishing compared to directly welding the two side beams together. An annular sealing gasket 22313 is provided between the pallet transverse side beams 221 and 222, surrounding the first deformable block 2214 and the second deformable block 2215. After assembly, the annular sealing gasket 22313 seals at the first through hole 2222, improving sealing performance.

[0489] Refer to Figure 46, which schematically illustrates the shape of the first through-hole 2222 in a cross-sectional view. The left side of Figure 46 represents the side close to the pallet's transverse side beam 221, while the right side represents the side away from the pallet's transverse side beam 221. As shown in Figure 46, the first through-hole 2222 is a tapered hole, with its length L4 on the side close to the pallet's transverse side beam 221 being shorter than its length L5 on the side away from the pallet's transverse side beam 221. The advantage of this structure is that the wedge block 22316 is inserted into the third space 2216 on the side away from the pallet's transverse side beam 221. After being squeezed by the wedge block 22316, the first and second deformable blocks 2214 and 2215 are deformed in the upward and downward directions, respectively, as shown in Figure 3, thereby hooking onto the pallet's longitudinal side beam 222, thereby ensuring a more secure connection between the pallet's transverse side beam 221 and longitudinal side beam 222.

[0490] Refer to Figure 45, which shows the first through-hole 2222 of the pallet longitudinal side beam 222, viewed from the side away from the pallet transverse side beam 221. Without the wedge block 22316 inserted, the length L5 of the first through-hole 2222 is greater than the length L6 between the upper end of the first deformable block 2214 and the lower end of the second deformable block 2215. This structure provides ample room for deformation of the first and second deformable blocks 2214, 2215, thereby ensuring a more secure connection between the pallet transverse side beam 221 and the pallet longitudinal side beam 222. It also prevents the insertion of the wedge block 22316 from excessively squeezing the pallet longitudinal side beam 222 and causing it to tear.

[0491] Referring to Figure 44 , the width W1 of first through-hole 2222 is greater than the width W2 of second deformable block 2215. Similarly, the width W1 of first through-hole 2222 is also greater than the widths of first deformable block 2214 and wedge-shaped block 22316. That is, among first through-hole 2222, first deformable block 2214, second deformable block 2215, and wedge-shaped block 22316, first through-hole 2222 has the largest width W1. This structure is advantageous in that it facilitates insertion of wedge-shaped block 22316. Furthermore, when soldering is required, the extra width of first through-hole 2222 allows for more solder fill, resulting in better solder strength.

[0492] Optionally, when the wedge block 223161 is not inserted, on the side away from the pallet transverse side beam 221, the difference between the length L5 of the first through hole 2222 and the length L6 between the upper end surface of the first deformable block 2214 and the lower end surface of the second deformable block 2215 is greater than the difference between the width W1 of the first through hole 2222 and the width of the first deformable block 2214, the second deformable block 2215, or the wedge block 22316. In other words, the gap between the first deformable block 2214, the second deformable block 2215, and the pallet longitudinal side beam 222 in the length direction of the first through hole 2222 is greater than the gap between the first deformable block 2214, the second deformable block 2215, or the wedge block 22316 and the pallet longitudinal side beam 222 in the width direction of the first through hole 2222. The advantage of this structure is that it can enable the first deformable block 2214 and the second deformable block 2215 to deform in the up and down directions as much as possible, thereby improving the connection reliability.

[0493] As shown in Figure 41, the pallet transverse side beam 221 also has a weight-reducing hole 2217, located where the first and second deformable blocks 2214, 2215 join the main body of the pallet transverse side beam 221. The advantage of having the weight-reducing hole 2217 in this location is that it not only reduces weight but also weakens the local strength of the pallet transverse side beam 221, making it easier for the first and second deformable blocks 2214, 2215 to deform.

[0494] Optionally, the battery tray 20 further includes a tray crossbeam 223 and a tray longitudinal beam 224. The tray longitudinal side beam 222 defines a second through-hole 2218, and the tray crossbeam 223 has a protrusion 22309 that inserts into the second through-hole 2218. This plug-in connection between the tray crossbeam 223 and the tray longitudinal side beam 222 facilitates installation. Similarly, the tray longitudinal beam 224 can also have a protrusion 22309, and accordingly, the tray transverse side beam 221 can also define a second through-hole 2218, and the tray longitudinal beam 224 and the tray transverse side beam 221 can also be plug-in connected.

[0495] Referring to Figure 42, when the wedge block 22316 is not inserted into the third spacing space 2216, the first deformation block 2214 and the second deformation block 2215 are in an undeformed state. At this time, the inner edge 22314 of the annular sealing gasket 22313 abuts against the first deformation block 2214 and the second deformation block 2215. The advantage of this structure is that it can ensure that the junction between the first deformation block 2214 and the second deformation block 2215 and the first through hole 2222 can be completely sealed.

[0496] Referring to Figure 43, when the wedge-shaped block 22316 is inserted into the third space 2216, the first deformable block 2214 and the second deformable block 2215 are deformed. The deformation of the edges of the first deformable block 2214 and the second deformable block 2215 is shown by the dotted lines. Accordingly, the first deformable block 2214 and the second deformable block 2215 exert an expansion force on the inner edge 22314 of the annular sealing gasket 22313, causing the inner edge 22314 to also deform and expand toward the outer edge 22315 of the annular sealing gasket 22313. This structure has the advantage that the annular sealing gasket 22313 can be pressed more tightly by the first deformable block 2214, the second deformable block 2215, the pallet transverse side beam 221, and the pallet longitudinal side beam 222, thereby achieving a better sealing effect.

[0497] Referring to Figures 40, 41, and 42, the pallet's transverse side beam 221 is provided with a first sealing strip 22310. The first sealing strip 22310 and the outer edge 22315 of the annular sealing gasket 22313 ensure a seal at the junction between the pallet's transverse side beam 221 and the annular sealing gasket 22313. Similarly, the pallet's longitudinal side beam 222 is provided with a second sealing strip 22312. The second sealing strip 22312 abuts against the first sealing strip 22310 and the outer edge 22315 of the annular sealing gasket 22313 simultaneously. The abutment of the three ensures a continuous seal at the junction between the pallet's transverse side beam 221 and the pallet's longitudinal side beam 222.

[0498] In addition, in a second aspect, the present application also discloses a seat support mounting structure. Specifically, as shown in Figures 37-39, the seat support mounting structure includes a seat support 70 and a battery pack 10; the seat support 70 and the battery pack 10 are connected by structural adhesive.

[0499] To further explain, the seat support 70 is used to install the seat, thereby providing support for the seat in the passenger compartment. Structural adhesives generally have a compression strength of >65MPa, a steel-steel tensile bonding strength of >30MPa, and a shear strength of >18MPa, such as the silicone structural adhesive commonly found on the market. The seat support 70 is connected to the battery pack 10 by structural adhesive, which eliminates the need to weld the seat support 70 to the vehicle body. This is beneficial for a vehicle body made of composite materials, such as carbon fiber materials, because composite materials such as carbon fiber materials are not suitable for welding processes. In addition, after the seat support 70 and the battery pack 10 are connected together by structural adhesive, the stress between the seat support 70 and the battery pack 10 can be relieved, and the seat support 70 and the battery pack 10 can be tightly combined together, thereby improving the strength of the battery pack 10 to withstand collisions, reducing the amount of intrusion into the battery during a collision, and ensuring the safety of the battery pack 10.

[0500] Although the length of the seat support member 70 extends in the transverse direction in the embodiment shown in FIG. 37 , in actual production, the length of the seat support member 70 can also extend in the longitudinal direction.

[0501] Optionally, the battery pack 10 includes a battery tray 20 and a cold plate 60 , the battery tray 20 has a battery accommodating space 21 , the cold plate 60 is arranged above the battery tray 20 , the seat support 70 is arranged above the cold plate 60 , and the seat support 70 is connected to the cold plate 60 by structural adhesive.

[0502] To further illustrate, in the embodiment shown in FIG37 , the battery pack 10 includes a battery tray 20 and a cold plate 60. The battery tray 20 has a battery storage space 21. The cold plate 60 is used for heat exchange with the battery modules 30 shown in FIG37 , and can employ air cooling, liquid cooling, direct cooling, or other cooling methods. Specifically, the cold plate 60 is positioned above the battery tray 20, and the seat support 70 is positioned above the cold plate 60. The seat support 70 and the cold plate 60 are bonded together using structural adhesive. For example, in supercars, since their body materials are often made of composite materials such as carbon fiber, which are not suitable for welding, the seat support 70 and the cold plate 60 are bonded together, eliminating the need for further welding to the body. Furthermore, in the event of a side impact, some of the impact force can be dispersed through the cold plate 60 and seat support 70, thereby increasing the battery pack 10's impact resistance and minimizing impact intrusion into the battery modules 30, ensuring the safety of the battery pack 10.

[0503] Optionally, the length of the seat support 70 extends in a lateral direction.

[0504] Furthermore, the length of the seat support 70 extends in the transverse direction, which is more conducive to improving the strength of the battery pack 10 in withstanding side collisions. For the battery pack 10, side collisions are more likely to cause damage to it, so the length of the seat support 70 extending in the transverse direction is more advantageous.

[0505] Optionally, both ends of the seat support 70 are fixedly connected to the tray longitudinal side beams 222 .

[0506] 37 , the battery tray 20 includes a pair of tray transverse side beams 221 and a pair of tray longitudinal side beams 222. The tray transverse side beams 221 and the tray longitudinal side beams 222 are fixedly connected to form a "U"-shaped frame.

[0507] In the embodiment shown in Figure 37 , the seat support 70 includes a first seat support 71 and a second seat support 72 . In actual design, only one seat support 70 may be used, or multiple seat supports 70 may be used. Each of the first and second seat supports 71 and 72 has a first end and a second end, both of which are fixedly connected to the longitudinal side beam 222 of the battery tray 20 via a second connector 322 . In actual production, the first and second ends can also be fixedly connected to the longitudinal side beam 222 of the battery tray 20 through welding, riveting, or other methods. This structure has the advantage of directly connecting the seat support 70 to the longitudinal side beam 222. In the event of a side impact, the impact force exerted on the longitudinal side beam 222 can be directly transmitted to the seat support 70. This allows the seat support 70 to not only support the vehicle seat but also enhance the structural strength of the battery pack 10, thereby improving the battery pack 10's resistance to side impacts and protecting the battery module 30 shown in Figure 37 .

[0508] Optionally, at a position between two ends of the seat support 70 , a first fixing member 73 passes through the seat support 70 and the cold plate 60 and is fastened to the pallet cross beam 223 .

[0509] Optionally, the battery tray 203 further includes a tray crossbeam 223 disposed between a pair of tray longitudinal side beams 222. The tray crossbeam 223 divides the battery tray 20 into a plurality of battery accommodating spaces 21 while enhancing the structural strength of the battery tray 20 itself. At a position between the first end and the second end of the first seat support 71, the first fixing member 73 passes through the first seat support 71 and the cold plate 60 and is fastened to the tray crossbeam 223, thereby forming the mounting structure shown in FIG3 . The advantage of this structure is that a connection is established between the tray crossbeam 223 and the first seat support 71. Once a side impact deformation occurs, the tray crossbeam 223 and the first seat support 71 can always jointly resist the side impact force at the position between the first end and the second end, thereby reducing the intrusion of the battery module 30 in FIG2 . The first fixing member 73 and the second fixing member 74 can be bolts, rivets, etc.

[0510] Optionally, the cold plate 60 is provided with a cooling medium channel area, and the cooling medium channel area is located on both sides of the seat support 70 with equal areas.

[0511] Referring to Figures 37 and 38 , the cold plate 60 is provided with a cooling medium passage area, within which cooling medium channels are arranged. A cooling medium, such as air, coolant, or refrigerant, can flow through the cooling medium channels, thereby exchanging heat with the battery module 30 shown in Figure 2 . As shown in Figure 3 , after the first seat support 71 is installed, the cooling medium passage area is equal on both sides of the first seat support 71 (i.e., longitudinally, on both sides of the first seat support 71). Because the first fixing member 73 must pass through the cold plate 60, the cooling medium passage must avoid this passage area, which affects the layout of the cooling medium passage. By ensuring that the cooling medium passage area on both sides of the first seat support 71 is equal, with the first seat support 71 as the boundary, the first seat support 71 can minimize the impact on the heat dissipation performance of the battery module 30 shown in Figure 37 , thereby improving the structural strength of the battery pack 10 while ensuring temperature uniformity within the battery module 30.

[0512] Optionally, the seat support 70 includes a first seat support 71 and a second seat support 72, wherein both ends of the first seat support 71 are fixedly connected to the pallet longitudinal side beam 222 and at a position between the two ends of the first seat support 71, the first fixing member 73 passes through the first seat support 71 and the cold plate 60 and is fastened to the pallet cross beam 223, and both ends of the second seat support 72 are fixedly connected to the pallet longitudinal side beam 222 and the second seat support 72 is not connected to the pallet cross beam 223.

[0513] In this embodiment, two crossbeams are used: a first seat support 71 and a second seat support 72. The first and second ends of the first seat support 71 are fixedly connected to the pallet longitudinal side beam 222. A first fixing member 73 passes through the first seat support 71 and the cold plate 60 between the first and second ends and is fastened to the pallet crossbeam 223. The second seat support 72 is fixedly connected to the pallet longitudinal side beam 222 only at its first and second ends, and is not connected to the pallet crossbeam 223. This structure offers the advantage that the first seat support 71 primarily enhances the battery pack 10's resistance to side impact forces, while the second seat support 72 provides auxiliary support. Both can immediately resist side impact forces. Since only the first seat support 71 is connected to the pallet crossbeam 223, the area required for the connector to penetrate the cold plate 60 is minimized, thereby reducing the adverse effect on the heat exchange area of ​​the cooling medium passageway.

[0514] Optionally, the cold plate 60 is provided with a mounting hole, a sleeve 75 is passed through the mounting hole, and the first fixing member 73 passes through the sleeve 75 .

[0515] 38 , the cold plate 60 is provided with a mounting hole, through which a sleeve 75 is passed, and the first fixing member 73 is fastened to the pallet crossbeam 223 after passing through the sleeve 75. The sleeve 75 can improve the tear resistance of the cold plate 60 at the connection position of the fixing member.

[0516] Optionally, an upper end surface of the sleeve 75 is higher than an upper surface of the cooling medium channel of the cold plate 60 .

[0517] To further illustrate, the upper end surface of the sleeve 75 is higher than the upper surface of the cooling medium channel of the cold plate 60 . In this way, the sleeve 75 can protect the cooling medium channel from being squeezed, deformed or worn by the first seat support 71 .

[0518] This embodiment provides a car, which is equipped with the above-mentioned battery pack 10 or the above-mentioned seat support member mounting structure.

[0519] According to another aspect of the present application, a car is provided, which adopts the above seat support member installation structure or the above battery pack 10. Therefore, the car body does not need to be welded to the seat support member 70.

[0520] If the car body is made of composite materials that are not suitable for welding technology, it is particularly suitable to use the seat support mounting structure or battery pack 10 in this application, because in this case the seat support is directly bonded to the battery pack 10 shell and can also improve the structural strength of the battery pack 10.

[0521] In addition, the vehicle according to the embodiment of the present application ensures the safety and stability of the vehicle during driving by adopting the above-mentioned battery pack 10, thereby reducing the maintenance cost of the vehicle.

[0522] In some optional embodiments, the vehicle includes a vehicle body and a battery pack 10, and the battery pack 10 is disposed at the bottom of the vehicle body. In this case, the first side of the flow channel plate 601 faces the vehicle body.

[0523] In some optional embodiments, the vehicle body includes a passenger compartment. The sealing plate 606 is formed with an opening 607 that passes through the flow channel plate 601 in the thickness direction, and the opening 607 is arranged corresponding to the passenger compartment.

[0524] In some optional embodiments, the vehicle further includes a seal disposed around the opening 607 and between the opening 607 of the sealing plate 606 and the vehicle body. For example, the seal may be rectangular and disposed around the edge of the opening 607. Providing a seal between the opening 607 of the sealing plate 606 and the vehicle body improves the seal between the battery pack 10 and the vehicle body.

[0525] To further illustrate, the cold plate 60 has a cooling medium inlet and a cooling medium outlet. The cooling medium inlet branches to form at least two branch inlets, and the at least two branch outlets merge at the cooling medium outlet. Multiple branch flow channels are formed between the cooling medium inlet and the cooling medium outlet. In a direction away from the cooling medium inlet and the cooling medium outlet, the multiple branch flow channels form a first flow channel region, a second flow channel region, and a third flow channel region that are spaced apart from each other. The first flow channel region is surrounded by the branch flow channels of the second flow channel region, and the second flow channel region is surrounded by the branch flow channels of the third flow channel region.

[0526] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0527] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A battery pack (10), wherein: The battery pack (10) comprises a battery tray (20), a structural beam (22) being provided on the battery tray (20), the structural beam (22) being suitable for separating the battery tray (20) into a battery accommodating space (21) and an electrical accommodating space (28), the battery accommodating space (21) and the electrical accommodating space (28) being arranged to be isolated from each other, the battery accommodating space (21) accommodating a battery module (30), and the electrical accommodating space (28) accommodating a distribution box (40a).

2. The battery pack (10) according to claim 1, wherein: Each of the battery modules (30) comprises a plurality of battery cells (101), and the battery cells (101) are insulated and arranged on the battery tray (20).

3. The battery pack (10) according to claim 2, wherein: An insulating glue (206) is provided between adjacent battery cells (101); and / or a first insulating layer (201) is provided between the structural beam (22) and the battery cell (101); and / or a second insulating layer is provided in the distribution box (40a); and / or the battery pack (10) further comprises a cold plate (60), and a third insulating layer is provided between the cold plate (60) and the battery cell (101).

4. The battery pack (10) according to claim 3, wherein: The upper surface and / or the lower surface of the cold plate (60) are both flat surfaces.

5. The battery pack (10) according to claim 3 or 4, wherein: The cold plate (60) comprises: A flow channel plate (601), wherein two sides of the flow channel plate (601) in a thickness direction are respectively a first side plate (602) and a second side plate (604), the first side plate (602) having a protruding portion (603), and the protruding portion (603) and the second side plate (604) jointly define a flow channel (605); a sealing plate (606), the sealing plate (606) being arranged on a side of the flow channel plate (601) close to the first side plate (602); and A support member (608), wherein the support member (608) is supported between the flow channel plate (601) and the sealing plate (606).

6. The battery pack (10) according to claim 5, wherein: The flow channel plate (601) comprises a flow channel area and a non-flow channel area, the non-flow channel area is arranged on the outer peripheral side of the flow channel plate (601) and surrounds the flow channel area, the flow channel area is provided with a flow channel (605), and the non-flow channel area is not provided with a flow channel (605); the support member (608) is a frame-shaped structure, and the support member (608) is arranged in the non-flow channel area.

7. The battery pack (10) according to any one of claims 1 to 6, wherein: The battery module (30) comprises at least one group of a first battery module and a second battery module; The distribution box (40a) comprises a first distribution box (40) and a second distribution box (41); The first distribution box (40) is connected in series between the first battery module and the second battery module, the second distribution box (41) is used to output electric energy to the outside, and the second distribution box (41) is connected to the first distribution box (40); The first distribution box (40) is used to respond to a signal from the second distribution box (41) to connect or disconnect the first battery module and the second battery module.

8. The battery pack (10) according to claim 7, wherein: The first distribution box (40) includes a first switch module (403), which is connected in series between the first battery module and the second battery module and is communicatively connected to the second distribution box (41). The first switch module (403) is used to respond to a signal from the second distribution box (41) to connect or disconnect the first battery module and the second battery module.

9. The battery pack (10) according to claim 7 or 8, wherein: The first distribution box (40) further comprises a second switch module (404), the second switch module (404) being connected in series between the first battery module and the second battery module, and the second switch module (404) being adapted to be disconnected after a preset parameter reaches a threshold value.

10. The battery pack (10) according to any one of claims 1 to 9, wherein: The battery pack (10) also includes a battery wiring harness; The structural beam (22) has a receiving groove (2244) on a side away from the battery tray (20), and an opening side of the receiving groove (2244) is arranged away from the battery tray (20). The battery wiring harness is received in the receiving groove (2244) and is insulated from the structural beam (22).

11. The battery pack (10) according to claim 10, wherein: The battery pack (10) further includes a container, the battery wiring harness is contained in the container, the container is contained in the containing groove (2244), the container is a groove-shaped component, and the opening side of the container and the opening side of the containing groove (2244) face the same direction.

12. The battery pack (10) according to any one of claims 1 to 11, wherein: The battery pack (10) has a plurality of battery modules (30), two of the battery modules (30) or the battery module (30) and the distribution box (40a) are connected via a bus, the bus comprising a first connecting portion (304a1), a first bending portion (304a2), a third transition portion (304a3), a second bending portion (304a4) and a second connecting portion (304a5) which are arranged in sequence, the first bending portion (304a2) having a thickness direction of the first bending portion (304a2) and a second connecting portion (304a5). The second bending portion (304a4) has a plurality of metal sheets arranged in sequence along the thickness direction of the second bending portion (304a4), wherein the first connecting portion (304a1) and the first bending portion (304a2) are located at one end of the first direction of the third transition portion (304a3), the second bending portion (304a4) and the second connecting portion (304a5) are located at one end of the second direction of the third transition portion (304a3), and the first direction intersects with the second direction.

13. The battery pack (10) according to claim 12, wherein: The battery pack (10) further comprises a sealing cover for sealing the battery tray (20), and the battery tray (20) is provided with a supporting component; The battery pack (10) further comprises an adapter (303), and the two bus bars are connected via the adapter (303), wherein a connection point between one of the bus bars and the adapter (303) and a connection point between the other bus bar and the adapter (303) are both located on a side of the support component facing the sealing cover.

14. The battery pack (10) according to claim 13, wherein: One of the two busbars is a first connecting piece (321), and the other busbar is a second connecting piece (322); The first connecting member (321) is provided with a first positioning hole (3211); The second connecting member (322) is provided with a second positioning hole (3321); The adapter (303) is provided with a first boss (3031) and a second boss (3032); The first boss (3031) corresponds in shape to the first positioning hole (3211), and the second boss (3032) corresponds in shape to the second positioning hole (3321).

15. The battery pack (10) according to claim 14, wherein: When the first connecting member (321), the second connecting member (322) and the adapter (303) are connected, there is no overlapping portion between the first connecting member (321) and the second connecting member (322) in the height direction.

16. The battery pack (10) according to any one of claims 1 to 15, wherein: The structural beam (22) comprises a pallet crossbeam (223) and a pallet longitudinal beam (224); the pallet crossbeam (223) is provided with a third snap-in opening (2231); the pallet longitudinal beam (224) is provided with a fourth snap-in opening (2241); the third snap-in opening (2231) of the pallet crossbeam (223) is snap-connected with the fourth snap-in opening (2241) of the pallet longitudinal beam (224) to separate the space inside the battery pack (10) into a plurality of battery accommodating spaces (21).

17. The battery pack (10) according to claim 16, wherein: The structural beam (22) includes a tray longitudinal side beam (222), the tray cross beam (223) has a first exhaust cavity, the tray longitudinal side beam (222) has a second exhaust cavity, the first exhaust cavity is connected to the second exhaust cavity, the battery accommodating space (21) inside the battery tray (20) is connected to the first exhaust cavity, and the second exhaust cavity is connected to the space outside the battery tray (20).

18. The battery pack (10) according to any one of claims 1 to 17, wherein: The structural beam (22) divides the battery tray (20) into a plurality of battery accommodating spaces (21).

19. The battery pack (10) according to claim 18, wherein: The battery tray (20) further includes an insulating component (22302), and the structural beam (22) includes a tray cross beam (223) and / or a tray longitudinal beam (224), wherein the tray cross beam (223) and / or the tray longitudinal beam (224) are provided with an opening, and the insulating component (22302) is arranged on the tray cross beam (223) and / or the tray longitudinal beam (224) and blocks the opening, and the insulating component (22302) is used for electrically connecting the electrical components in two adjacent electrical accommodation spaces (28) and / or the battery accommodation spaces (21).

20. A seat support mounting structure, wherein: include: Seat support (70); as well as The battery pack (10) according to any one of claims 1 to 19; The seat support (70) is connected to the battery pack (10).

21. The seat support mounting structure according to claim 20, wherein: The battery pack (10) further comprises a cold plate (60), the seat support (70) is arranged above the cold plate (60) of the battery pack (10), and the seat support (70) and the cold plate (60) are suitable for being connected by structural adhesive.

22. A car, wherein: The vehicle is installed with a battery pack (10) according to any one of claims 1 to 19, or is installed with a seat support component mounting structure according to any one of claims 20 to 21.

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