Electrical connection structure, connection assembly, battery pack and automobile

Abstract

An electrical connection structure, a connection assembly (1000), a battery pack, and an automobile. The electrical connection structure comprises: a first connecting member (200), a second connecting member (300), and an adapter (400); the first connecting member (200) is provided with a first positioning hole (201), and the second connecting member (300) is provided with a second positioning hole (301); the adapter (400) is provided with a first boss (401) and a second boss (402), the first boss (401) corresponding to the first positioning hole (201) in shape, and the second boss (402) corresponding to the second positioning hole (301) in shape.

Description

Electrical connection structure, connection assembly, battery pack and automobile

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202321995997.X filed on July 26, 2023, entitled “Connection assembly, battery pack and electrical equipment” and Chinese patent application No. 202321995173.2 filed on July 26, 2023, entitled “Electrical connection structure, battery pack and automobile”, all contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of new energy technology, and in particular to an electrical connection structure, a connection assembly, a battery pack, and a vehicle. Background Art

[0004] In the prior art, when a pair of electrical parts need to be connected together, each electrical part needs to be connected to a connector, and the two connectors are then overlapped together. When multiple pairs of electrical parts need to be connected, double the number of connectors is required, resulting in an excessive number of parts and a complex connection structure.

[0005] Summary of the Invention

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide an electrical connection structure with a small number of components and a simple structure.

[0007] The present application further proposes a connection assembly having the above-mentioned electrical connection structure.

[0008] The present application further proposes a battery pack having the above-mentioned electrical connection structure or connection assembly.

[0009] The present application further proposes a car having the above-mentioned electrical connection structure, connection assembly or battery pack.

[0010] The electrical connection structure according to the present application includes: a first connector having a first positioning hole; a second connector having a second positioning hole; and an adapter having a first boss and a second boss, wherein the first boss corresponds in shape to the first positioning hole, and the second boss corresponds in shape to the second positioning hole. The electrical connection structure according to the present application effectively reduces the number of components and reduces the complexity of the connection.

[0011] The connection assembly according to the present application is used to connect between the sampling harness and the battery cell, and includes: an electrical connection structure, the electrical connection structure is constructed as the above-mentioned electrical connection structure, the adapter is used to be electrically connected to the battery cell, and the adapter is provided with a connecting portion; an electrical connector is used to connect the connecting portion and the sampling harness, and one end of the electrical connector connected to the connecting portion is provided with a holding portion, and the holding portion is used to maintain the relative position of the electrical connector and the connecting portion.

[0012] The connection assembly according to the present application facilitates the subsequent welding process between the conductive member and the connection member, thereby improving installation efficiency.

[0013] The battery pack according to the present application includes the above-mentioned electrical connection structure or connection component. It can be understood that the battery pack of the present application can also simplify the installation process and improve the installation efficiency because it adopts the above-mentioned electrical connection structure or connection component.

[0014] According to the automobile of the present application, the automobile includes the above-mentioned electrical connection structure, connection assembly or battery pack. It can be understood that the electrical equipment of the present application can also simplify the installation process and improve the installation efficiency because it adopts the above-mentioned electrical connection structure, connection assembly or battery pack.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a perspective view of a first connecting member according to an embodiment of the present application.

[0017] FIG2 is a front view of the first connecting member of the embodiment of the present application.

[0018] FIG3 is a bottom view of the first connecting member according to an embodiment of the present application.

[0019] FIG4 is a perspective view of a second connecting member according to an embodiment of the present application.

[0020] FIG5 is a rear view of the second connecting member according to the embodiment of the present application.

[0021] FIG6 is a bottom view of the second connecting member according to the embodiment of the present application.

[0022] FIG. 7 is a perspective view of the adapter according to an embodiment of the present application.

[0023] FIG8 is an exploded view of the electrical connection structure according to an embodiment of the present application.

[0024] FIG9 is an exploded view of a battery pack according to an embodiment of the present application.

[0025] FIG10 is a perspective view of a sampling bus according to an embodiment of the present application.

[0026] FIG11 is a perspective view of a low-voltage wiring harness trough according to an embodiment of the present application.

[0027] FIG12 is a partially enlarged view of the battery pack according to an embodiment of the present application, mainly showing the electrical connection structure.

[0028] FIG13 is a partially enlarged view of the battery pack at another position according to an embodiment of the present application.

[0029] FIG14 is a schematic diagram of a planar structure of a battery pack provided in one embodiment of the present application;

[0030] FIG15 is a schematic diagram of the local planar structure at point A in FIG14;

[0031] FIG16 is a schematic diagram of a planar structure of a connection assembly provided in one embodiment of the present application;

[0032] FIG17 is a schematic diagram of a planar structure of a connection assembly provided in another embodiment of the present application;

[0033] FIG18 is a schematic diagram of a planar structure of an adapter provided in one embodiment of the present application;

[0034] FIG19 is a schematic diagram of a planar structure of an electrical connector provided in one embodiment of the present application;

[0035] FIG20 is a schematic diagram of a planar structure of a connection assembly provided in another embodiment of the present application;

[0036] FIG21 is a schematic diagram of the planar structure of an adapter provided in another embodiment of the present application;

[0037] FIG22 is a schematic diagram of the planar structure of an adapter provided in another embodiment of the present application;

[0038] FIG23 is a schematic diagram of the planar structure of an electrical connector provided in another embodiment of the present application.

[0039] Figure numerals: 100, battery pack; 101, horizontal side beam; 102, longitudinal side beam; 103, battery storage space; 104, tray longitudinal beam; 105, storage slot; 106, high-voltage cable; 107, high-voltage cable slot; 108, low-voltage wiring harness; 1081, sampling line; 1082, sampling component; 1083, quick-connect connector; 109, low-voltage wiring harness slot; 1091, opening; 110, tray cross beam; 111, front distribution box; 112, rear distribution box; 113, battery module; 1131, sampling adapter harness plug; 500, battery pack; 501, tray; 5011, bottom plate; 5012, side wall; 502, battery cell; 5021, pole core; 5022, Housing; 5023, pole; 503, sampling unit; 5031, sampling harness; 5032, receiver; 504, battery module; 1000, connection assembly; 30, electrical connection portion; 200, first connection member; 201, first positioning hole; 202, first positioning portion; 203, first transition portion; 204, first bending portion; 205, first connection portion; 206, first edge; 300, second connection member; 301, second positioning hole; 302, second positioning portion; 303, second transition portion; 304, second bending portion; 305, second connection portion; 306, second edge; 400, adapter; 11, connection portion; 111, second connection surface; 12, protrusion; 121, top surface; 122, outer surface; 13, Groove; 131, bottom surface; 132, inner surface; 14, protrusion; 15, slot; 16, chamfer; 17, positioning column; 18, boss; 401, first boss; 402, second boss; 20, electrical connector; 21, connecting piece; 22, holding portion; 22a, first holding portion; 22b, second holding portion; 221, first connecting surface; 222, hollow area; 223, boss; 23, pre-bent section; 24, wiring hole; 25, positioning portion; 251, positioning hole. DETAILED DESCRIPTION

[0040] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0041] In the following description, the “longitudinal” direction represents the length direction of the car, and the “transverse” direction represents the width direction of the car.

[0042] Referring to Figures 1 to 8 and 11, the electrical connection structure of this embodiment includes: a first connector 200, a second connector 300, and an adapter 400. The first connector 200 defines a first positioning hole 201, the second connector 300 defines a second positioning hole 301, and the adapter 400 is provided with a first boss 401 and a second boss 402. The first boss 401 corresponds in shape to the first positioning hole 201, and the second boss 402 corresponds in shape to the second positioning hole 301. That is, if the first boss 401 is circular, the first positioning hole 201 is also circular. If the first boss 401 is triangular, the first positioning hole 201 is also triangular. The correspondence between the second boss 402 and the second positioning hole 301 is similar to that described above. As more clearly seen in Figure 11, when electrical connection is required, the first boss 401 is inserted into the first positioning hole 201, and the second boss 402 is inserted into the second positioning hole 301. In this way, the position between the first connector 200 and the second connector 300 is fixed. With this electrical connection structure, if additional connection points are needed, it is only necessary to increase the number of bosses on the adapter 400 and the number of connectors accordingly. There is no need to use a pair of connectors between every two connectors, thus reducing the number of parts. When the first and second electrical components need to be connected to the third electrical component, only three connectors are required: the first connector, the second connector, and the adapter. Instead of requiring a pair of connectors between the first and third electrical components and a pair of connectors between the second and third electrical components, a total of four connectors are required. This effectively reduces the number of parts and reduces the complexity of the connection. This beneficial effect will be further described in detail below with reference to specific examples.

[0043] In some embodiments, the first connector 200 and the second connector 300 are configured as an electrical connection portion 30 .

[0044] In some embodiments, the first boss 401 and the second boss 402 are configured as bosses 18 .

[0045] Referring to Figures 8 and 12, when the first connecting member 200, the second connecting member 300 and the adapter 400 are connected, there is no overlapping part between the first connecting member 200 and the second connecting member 300 in the Z direction. 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 200 and the adapter 400, or if there is a welding defect between the second connecting member 300 and the adapter 400, the welding defect can be discovered in time.

[0046] As can be seen from Figures 1 to 3, the first connector 200 includes a first positioning portion 202, which is provided with a first positioning hole 201. The first positioning hole 201 is a waist-shaped hole, and accordingly, the first boss 401 is a waist-shaped boss. The waist-shaped shape makes it easy to observe the assembly direction, thus achieving a fool-proof design.

[0047] As can be seen from Figures 2 to 6, the second connector 300 includes a second positioning portion 302, which has a second positioning hole 301 formed therein. The second positioning hole 301 is a waist-shaped hole, and accordingly, the second boss 402 is a waist-shaped boss. The waist-shaped shape makes it easy to observe the assembly direction, thus achieving a fool-proof design.

[0048] Referring to Figure 7 , the long axis L1 of the first boss 401 is angled relative to the long axis L3 of the adapter 400. 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 200, thereby achieving a foolproof design. Similarly, the long axis L2 of the second boss 402 can also be angled relative to the long axis L3 of the adapter 400, similarly facilitating the installer to easily observe the assembly angle when assembling the second connector 300, thereby achieving a foolproof design.

[0049] 8 and 12 , when the first connector 200, the second connector 300, and the adapter 400 are connected, the sum of the areas of the first positioning portion 202 and the second positioning portion 302 is smaller than the area of ​​the adapter 400. In other words, on the plane where the first boss 401 and the second boss 402 are located, the first positioning portion 202 and the second positioning portion 302 do not completely cover the adapter 400. A portion of the adapter 400 needs to be exposed, thereby facilitating observation of the connection reliability between the first connector 200, the second connector 300, and the adapter 400. Furthermore, this provides space for other components, such as the sampling member 1082, to be connected to the adapter 400.

[0050] 1 to 3 , the first connecting member 200 further includes a first transition portion 203 , which is arranged at an angle to the first positioning portion 202 , that is, the first transition portion 203 is not parallel to and does not overlap with the first positioning portion 202 .

[0051] 4 to 6 , the second connecting member 300 further includes a second transition portion 303 , which is arranged at an angle to the second positioning portion 302 , that is, the second transition portion 303 is not parallel to and does not overlap with the second positioning portion 302 .

[0052] Referring to Figure 8 , when the first connector 200, the second connector 300, and the adapter 400 are connected, the first transition portion 203 and the second transition portion 303 are located on either side of the adapter 400. After the first boss 401 is inserted into the first positioning hole 201 and the second boss 402 is inserted into the second positioning hole 301, the first transition portion 203 and the second transition portion 303 are located on either side of the adapter 400. In this way, the first transition portion 203 and the second transition portion 303 can assist in positioning the first connector 200 and the second connector 300, respectively. Furthermore, the first connector 200, the second connector 300, and the adapter 400 can be properly fitted together by squeezing the two transition portions with surrounding components, thereby avoiding subsequent problems such as cold welding and weld cracking.

[0053] As can be seen from Figures 1 to 3, the first connector 200 further includes: a first bent portion 204 disposed at an angle to both the first positioning portion 202 and the first transition portion 203; and a first connecting portion 205 disposed at an angle to the first bent portion 204. The first connecting portion 205 is spaced apart from the first transition portion 203. This spacing can be formed by stamping or welding.

[0054] As can be seen from Figures 4 to 6, the second connector 200 further includes: a second bent portion 304, which is arranged at an angle to both the second positioning portion 302 and the second transition portion 303; and a second connecting portion 305, which is arranged at an angle to the second bent portion 304. The second connecting portion 305 is spaced apart from the second transition portion 303. This spacing can be formed by stamping or welding.

[0055] As shown in Figure 8, after the first connector 200, the second connector 300, and the adapter 400 are connected, the first connection portion 205 and the second connection portion 305 are parallel and located on either side of the adapter 400. The first connection portion 205 is further away from the adapter 400 than the first transition portion 203, and the second connection portion 305 is further away from the adapter 400 than the second transition portion 303. This structural advantage is that it not only facilitates the connection between the two connectors and the surrounding wiring harness, but also keeps the connection points between the two connectors and the surrounding wiring harness as far apart as possible, reducing the risk of arcing and short circuits.

[0056] As can be seen from FIG. 1 , the first positioning hole 201 is a waist-shaped hole, and the first positioning portion 202 has a first edge 206 parallel to the length direction of the first positioning hole 201 (ie, the dot-dash line direction in FIG. 1 ).

[0057] As can be seen from FIG. 4 , the second positioning hole 301 is a waist-shaped hole, and the second positioning portion 302 has a second edge 306 parallel to the length direction of the second positioning hole 301 (ie, the dot-dash line direction in FIG. 4 ).

[0058] As can be seen in Figure 12, after the first and second connectors 200 and 300 are connected to the adapter 400, a gap exists between the first edge 206 and the second edge 306. This structure allows the two connectors to intersect but not overlap, making it easier to simultaneously observe whether the two connectors have detached or fallen off the adapter 400 during the subsequent welding process.

[0059] In order to improve the connection strength, after the first boss 401 is inserted into the first positioning hole 201 and the second boss 402 is inserted into the second positioning hole 301, the first connecting member 200 and the adapter 400 are welded along the edge of the first boss 401 and the first positioning hole 201; the second connecting member 300 and the adapter 400 are welded along the edge of the second boss 402 and the second positioning hole 301.

[0060] The battery pack designed according to the present application can be constructed as the battery pack 500 in some embodiments, or as the battery pack 100 in other embodiments.

[0061] Here, please refer to Figures 14 and 15 in conjunction. Figure 14 is a schematic diagram of the planar structure of a battery pack 500 provided in an embodiment of the present application; Figure 15 is a schematic diagram of the local planar structure at point A in Figure 14.

[0062] As shown in Figures 14 and 15, the present application provides a battery pack 500, which includes a tray 501, battery cells 502, a sampling unit 503 and a connection assembly 1000. Here, the tray 501 includes a bottom plate 5011 and a side wall 5012. The side wall 5012 is arranged around the periphery of the bottom plate 5011 and cooperates with the bottom plate 5011 to form a receiving space with a certain volume to accommodate and protect the battery cells 502, the sampling unit 503 and the connection assembly 1000. There are multiple battery cells 502, and the multiple battery cells 502 are arranged at intervals on the bottom plate 5011. The battery cells 502 are connected in series or in parallel with each other. Each battery cell 502 includes a pole core 5021, a shell 5022 and a pole 5023. The housing 5022 is used to accommodate and protect the pole core 5021 . The pole 5023 is located at one end of the pole core 5021 and passes through the housing 5022 to be connected to the pole core 5021 .

[0063] It can be understood that when the external current is transmitted to the pole core 5021 through the pole 5023, the pole core 5021 cooperates with the electrolyte (not shown in the figure) to store electrical energy in the shell, thereby realizing the charging function of the battery cell 502; when the external circuit (not shown in the figure) controls the battery cell 502 to release electrical energy to the outside, the pole 5023 extracts the energy stored in the shell in the form of current, thereby realizing the discharge function of the battery cell 502.

[0064] The connection assembly 1000 is fixed to the base plate 5011 and electrically connected to the poles 5023 of the battery cells 502 to collect electrical signals from the battery cells 502. The sampling unit 503 includes a sampling harness 5031 and a receiver 5032. The receiver 5032 is located at the outer edge of the base plate 5011. The sampling harness 5031 is connected between the receiver 5032 and the connection assembly 1000 to transmit the electrical signals collected by the connection assembly 1000 to the receiver 5032. The receiver 5032 analyzes, stores, and exchanges the received electrical signals with external devices to facilitate real-time monitoring of the status of each battery cell 502 and prevent adverse reactions such as overcharging, over-discharging, and overheating of the battery cells 502.

[0065] It is understandable that in some other embodiments, the battery pack 500 further includes a cover plate (not shown in the figure), which is arranged opposite to the bottom plate 5011 and cooperates with the side wall 5012 and the bottom plate 5011 to form a closed receiving space.

[0066] Please refer to FIG. 16 for a schematic diagram of the planar structure of a connection component 1000 provided in one embodiment of the present application, and FIG. 17 for a schematic diagram of the planar structure of a connection component 1000 provided in another embodiment of the present application.

[0067] The connection assembly 1000 according to the present application is used to connect between the sampling harness 5031 and the battery cell 502, and includes: an electrical connection structure, the electrical connection structure is constructed as the above-mentioned electrical connection structure, the adapter 400 is used to electrically connect to the battery cell 502, and the adapter 400 is provided with a connecting portion 11; an electrical connector 20, used to connect the connecting portion 11 and the sampling harness 5031, and the end of the electrical connector 20 connected to the connecting portion 11 is provided with a retaining portion, and the retaining portion is used to maintain the relative position of the electrical connector 20 and the connecting portion 11.

[0068] As shown in Figures 14 to 17, the connection assembly 1000 of the present application includes an adapter 400 and an electrical connector 20. The adapter 400 includes two opposite ends, one of which is electrically connected to the pole 5023 of the battery cell 502 (see Figure 15 for details), and the other end is provided with a connecting portion 11. The electrical connector 20 includes a connecting piece 21 and a retaining portion 22. There are two retaining portions 22, and the two retaining portions 22 are arranged on opposite sides of the connecting piece 21. The electrical connector 20 is located at one end of the adapter 400 where the connecting portion 11 is provided, and the retaining portion 22 is used to maintain the relative position between the electrical connector 20 and the connecting portion 11.

[0069] It can be understood that the connection component 1000 of the present application has a connecting portion 11 set on the adapter 400 and a corresponding retaining portion 22 set on the electrical connector 20, so that the retaining portion 22 and the connecting portion 11 are fixed to each other, thereby limiting the relative position between the adapter 400 and the electrical connector 20 and preventing the adapter 400 from being displaced relative to the electrical connector 20, thereby facilitating the subsequent welding process between the adapter 400 and the electrical connector 20 and improving installation efficiency.

[0070] It should be noted that the number and position of the retaining portions 22 in the above embodiment are for illustrative purposes only. In other embodiments of the present application, the number of retaining portions 22 is not limited to two, but may be one, three, or another number. Furthermore, the retaining portions 22 may be located not only on opposite sides of the connecting piece 21 but also on any side of the connecting piece 21, and this is not specifically limited in the present application.

[0071] Please refer to Figures 18 and 19; Figure 18 is a schematic diagram of the planar structure of the adapter 400 provided in an embodiment of the present application; Figure 19 is a schematic diagram of the planar structure of the electrical connector 20 provided in an embodiment of the present application.

[0072] As shown in Figures 14 to 19, in one embodiment, the retaining portion 22 includes a first connecting surface 221, and the connecting portion 11 includes a second connecting surface 111. The first connecting surface 221 and the second connecting surface 111 are in abutment with each other. It can be understood that the first connecting surface 221 and the second connecting surface 111 are matched and arranged so that the first connecting surface 221 and the second connecting surface 111 are in abutment with each other to maintain the relative position between the electrical connector 20 and the connecting portion 11, which can prevent the electrical connector 20 from rotating relative to the adapter 400 when it is subsequently installed on the adapter 400. At the same time, it can also simplify the installation process of the adapter 400 and the electrical connector 20 and improve the installation efficiency of the adapter 400 and the electrical connector 20.

[0073] For example, the two retaining portions 22 may be a first retaining portion 22a and a second retaining portion 22b, respectively. When the electrical connector 20 swings relative to the connecting portion 11 toward the first retaining portion 22a, the first connecting surface 221 of the first retaining portion 22a abuts against the second connecting surface 111 on one side of the connecting portion 11, thereby preventing the electrical connector 20 from swinging. Similarly, when the electrical connector 20 swings relative to the connecting portion 11 toward the second retaining portion 22b, the first connecting surface 221 of the second retaining portion 22b abuts against the second connecting surface 111 on the other side of the connecting portion 11, thereby preventing the electrical connector 20 from swinging. The first connecting surfaces 221 of the two retaining portions 22 cooperate with the second connecting surface 111 of the connecting portion 11 to prevent the electrical connector 20 from rotating relative to the adapter 400.

[0074] It can be, as shown in Figures 17 to 19, in one embodiment, the connecting portion 11 includes a protrusion 12, and the connecting piece 21 of the electrical connector 20 is attached to the top surface 121 of the protrusion 12. The retaining portion 22 extends along the direction of the connecting piece 21 close to the adapter 400 and is fixedly connected to the outer surface 122 of the protrusion 12, thereby fixing the electrical connector 20 to the adapter 400. Here, the retaining portion 22 can be abutted against the outer surface 122 of the protrusion 12 to achieve a fixed connection, and the retaining portion 22 can also be snapped onto the outer surface 122 of the protrusion 12 to achieve a fixed connection. It should be noted that at this time, the outer surface 122 of the protrusion 12 is also the second connecting surface 111 of the connecting portion 11, and the surface of the retaining portion 22 close to the protrusion 12 is the first connecting surface 221.

[0075] In one embodiment, the electrical connector 20 includes a pre-bent section 23 connected between the side wall of the connecting piece 21 and the retaining portion 22, and the pre-bent section 23 has an arcuate cross-section. It will be appreciated that in this embodiment, the pre-bent section 23 is provided as a transition structure at the junction of the side wall 5012 of the connecting piece 21 and the retaining portion 22, and the arcuate cross-section of the pre-bent section 23 can reduce stress concentration and reduce the risk of fracture at the junction of the side wall 5012 of the connecting piece 21 and the retaining portion 22.

[0076] The electrical connector 20 also includes a wiring hole 24, which is located at one end of the electrical connector 20 away from the adapter 400 and is located on the side of the connecting piece 21 away from the adapter 400. The wiring hole 24 is connected to the sampling harness 5031 to transmit the collected signal to the receiver 5032 (see Figure 15 for details).

[0077] In one embodiment, the protrusion 12 is square in shape, and the retaining portion 22 is attached to the sidewall of the square protrusion 12 to be fixed to the protrusion 12 .

[0078] Please refer to Figures 20 and 21. Figure 20 is a schematic diagram of the planar structure of a connecting component 1000 provided in another embodiment of the present application; Figure 21 is a schematic diagram of the planar structure of an adapter 400 provided in another embodiment of the present application.

[0079] As shown in Figures 20 and 21, in one embodiment, the connecting portion 11 includes a groove 13, and the connecting piece 21 of the electrical connector 20 is affixed to the bottom surface 131 of the groove 13. The retaining portion 22 extends along the connecting piece 21 in a direction away from the adapter 400 and abuts against the inner surface 132 of the groove 13, thereby securing the electrical connector 20 to the adapter 400. It should be noted that in this case, the inner surface 132 of the groove 13 is also the second connecting surface 111 of the connecting portion 11, while the surface of the retaining portion 22 adjacent to the groove 13 is the first connecting surface 221.

[0080] The electrical connector 20 also includes a wiring hole 24, which is located at one end of the electrical connector 20 away from the adapter 400 and is located on the side of the connecting piece 21 away from the adapter 400. The wiring hole 24 is connected to the sampling harness 5031 to transmit the collected signal to the receiver 5032 (see Figure 15 for details).

[0081] In one embodiment, the shape of the groove 13 is square, and the retaining portion 22 is attached to the inner wall of the square groove 13 to be fixed to the groove 13 .

[0082] In the embodiment shown in Figure 17, the retaining portion 22 is elastic. It is understood that by providing the retaining portion 22 with elasticity and utilizing the deformation recovery ability of the elastic retaining portion 22, the installation of the adapter 400 and the electrical connector 20 is facilitated, while also ensuring reliable contact between the retaining portion 22 and the connecting portion 11.

[0083] In one embodiment, the minimum distance between the two retaining portions 22 is less than the width of the protrusion 12, and the two retaining portions 22 clamp the two sides of the protrusion 12 to secure the electrical connector 20. It will be appreciated that in this embodiment, based on the provision of the protrusion 12 on the adapter 400 and the inherent elasticity of the retaining portions 22, the minimum distance between the two retaining portions 22 is set to be less than the width of the protrusion 12. Simultaneously, the two retaining portions 22 clamp the two sides of the protrusion 12, utilizing the inherent elastic deformation of the retaining portions 22 to achieve an automatic press-fit between the retaining portions 22 and the outer surface 122 of the protrusion 12, thereby securing the electrical connector 20.

[0084] In the embodiment shown in FIG20 , the maximum distance between the two retaining portions 22 is greater than the width of the groove 13, and the two retaining portions 22 abut against the inner surface 132 of the groove 13 to secure the electrical connector 20. It will be appreciated that in this embodiment, based on the provision of the groove 13 on the adapter 400 and the inherent elasticity of the retaining portions 22, the maximum distance between the two retaining portions 22 is set to be greater than the width of the groove 13, and the two retaining portions 22 abut against the inner surface 132 of the groove 13. This utilizes the retaining portions 22's inherent elastic deformation to achieve an automatic press-fit between the retaining portions 22 and the inner surface 132 of the groove 13, thereby securing the electrical connector 20.

[0085] Referring back to Figures 17 to 19 , in one embodiment, the adapter 400 includes two protrusions 14 . These protrusions 14 are located on opposite outer surfaces 122 of the projection 12 , each protrusion 14 extending toward a corresponding retaining portion 22 . Each retaining portion 22 includes a hollow region 222 , the position and number of which correspond to the position and number of the protrusions 14 . Each protrusion 14 extends into and abuts a corresponding hollow region 222 .

[0086] Referring back to Figures 19 and 20 , in one embodiment, the adapter 400 includes two protrusions 14, disposed on the inner surface 132 on opposite sides of the groove 13. Each protrusion 14 extends toward a corresponding retaining portion 22. Each retaining portion 22 includes a hollow region 222, the position and number of which correspond to the position and number of the protrusions 14. Each protrusion 14 extends into and abuts a hollow region 222.

[0087] In the above embodiment, a protrusion 14 is provided on the outer surface 122 of the protrusion 12 or on the inner surface 132 of the groove 13, and a hollow area 222 is provided at a position corresponding to the protrusion 14 on the retaining portion 22, and the protrusion 14 extends into and abuts against the hollow area 222 to prevent the electrical connector 20 from moving in a direction away from the adapter 400, thereby further limiting the relative position of the adapter 400 and the connecting piece.

[0088] As shown in Figures 22 and 23, in one embodiment, the adapter 400 includes a card slot 15, and the card slot 15 is provided on the outer surface 122 on opposite sides of the protrusion 12. The retaining portion 22 includes a boss 223, and the position and number of the boss 223 are matched with the position and number of the card slot 15. Each boss 223 is used to extend into and abut against a card slot 15. It can be understood that in this embodiment, the outer surface 122 of the protrusion 12 is recessed in a direction away from the retaining portion 22 to form the card slot 15. At the same time, the boss 223 is matched at the position of the retaining portion 22 corresponding to the card slot 15. The card slot 15 and the boss 223 abut against each other to prevent the electrical connector 20 from moving in a direction away from the adapter 400, thereby further limiting the relative position of the adapter 400 and the connecting piece.

[0089] It should be noted that in an embodiment in which the adapter 400 is provided with a groove 13 , the inner surface 132 of the groove 13 can be recessed in a direction away from the retaining portion 22 to form a card slot 15 , which can also achieve the effect of the above embodiment.

[0090] In one embodiment, when the adapter 400 includes the protrusion 14, the projections of the hollow areas 222 of the two retaining portions 22 on the surface of one of the retaining portions 22 partially overlap or are spaced apart. In another embodiment, when the adapter 400 includes the slot 15, the projections 223 of the two retaining portions 22 on the surface of one of the retaining portions 22 partially overlap or are spaced apart.

[0091] It can be understood that in the above embodiment, based on the adapter 400 including the protrusion 14 or the groove 13, the projections of the hollow areas 222 or the bosses 223 of the two holding parts 22 on the surface of one of the holding parts 22 are arranged to overlap or be spaced apart from each other, that is, the shapes of the hollow areas 222 or the bosses 223 of the two holding parts 22 are set to be different or the positions of the hollow areas 222 or the bosses 223 of the two holding parts 22 are set to be different, so that the electrical connector 20 can be installed in a preset position with a preset posture, thereby avoiding the electrical connector 20 from being installed upside down.

[0092] As shown in FIG17 , in one embodiment, the protrusion 12 is provided with a chamfer 16, which is provided on the top surface 121 of the protrusion 12. It will be appreciated that in this embodiment, the chamfer 16 on the top surface 121 of the protrusion 12 can be used to guide the retaining portion 22 toward the protrusion 12, thereby making it easier to assemble the electrical connector 20 with the adapter 400.

[0093] It should be noted that in another embodiment, when the adapter 400 is provided with a groove 13 to fix the electrical connector 20, the chamfer 16 can be provided at the notch of the groove 13 to guide the retaining portion 22 to extend into the groove 13, which can also make the assembly process of the electrical connector 20 and the adapter 400 easier.

[0094] As shown in FIG16 , in one embodiment, a positioning portion 25 is provided on the surface of the connecting piece 21 facing away from the adapter 400. It will be appreciated that in this embodiment, the positioning portion 25 is provided on the surface of the electrical connector 20 facing away from the connecting piece 21 so that when welding the electrical connector 20 and the adapter 400, the positioning portion 25 can be used to identify and accurately locate the desired welding point.

[0095] In the embodiment shown in FIG16 , the positioning portion 25 includes a positioning hole 251. The surface of the adapter 400 that contacts the connecting piece 21 is provided with a positioning post 17. The positioning post 17 matches the position and shape of the positioning hole 251, and the positioning post 17 can extend into the positioning hole 251. It will be understood that in this embodiment, the positioning hole 251 is provided in the electrical connector 20, and the positioning post 17 is matched with the surface of the adapter 400 that contacts the connecting piece 21, so that the positioning post 17 can extend into the positioning hole 251 and abut the inner surface of the positioning hole 251, thereby defining the relative position of the adapter 400 and the electrical connector 20.

[0096] In one embodiment, the positioning hole 251 is circular in shape, corresponding to the positioning post 17 being cylindrical in shape.

[0097] It should be noted that the structure of the above-mentioned positioning portion 25 is only introduced as an example. In some other embodiments, the positioning portion 25 can be arranged in any other form on the surface of the electrical connector 20 away from the connecting piece 21. For example, it can be a positioning point or other plane graphics, as long as it can realize the identification function to facilitate positioning.

[0098] In one embodiment, the retaining portion 22, the pre-bent section 23, and the connecting piece 21 are integrally formed. It is understood that by forming the retaining portion 22, the pre-bent section 23, and the connecting piece 21 as an integral structure, the retaining portion 22, the pre-bent section 23, and the connecting piece 21 can be directly stamped from the electrical connector 20 body, thereby simplifying the manufacturing process of the electrical connector 20 and improving the reliability of the electrical connector 20.

[0099] In one embodiment, the electrical connector 20 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 electrical connector 20 can improve the reliability of the connection assembly 1000 of the present application.

[0100] Please refer back to Figure 15. In one embodiment, the connection component 1000 also includes an electrical connection part 30, one end of the electrical connection part 30 is fixedly connected to the adapter 400, and the other end is connected to the pole 5023 of the battery cell 502, thereby realizing the electrical signal transmission function between the battery cell 502 and the adapter 400.

[0101] In some embodiments, the electrical connection portion 30 includes a first connection member 200 and a second connection member 300 .

[0102] Referring back to FIG. 16 , in one embodiment, the adapter 400 further includes a boss 18. The boss 18 is spaced apart from the connection portion 11, and each boss 18 is fixedly engaged with each electrical connection portion 30. It will be appreciated that in this embodiment, the boss 18 is spaced apart from the connection portion 11 on the adapter 400, and each boss 18 is fixedly engaged with each electrical connection portion 30, to ensure that the electrical signal of the pole 5023 of the battery cell 502 is transmitted to the boss 18 via the electrical connection portion 30, thereby achieving the electrical signal transmission function between the pole 5023 of the battery cell 502 and the adapter 400.

[0103] In some embodiments, the boss 18 includes a first boss 401 and a second boss 402 .

[0104] Please refer back to Figures 14 and 15. In one embodiment, the battery pack 500 includes four battery modules 504, and each battery module 504 is composed of multiple battery cells 502 connected in series or in parallel. The two battery modules 504 are connected by a connecting component 1000, and sampling is performed through the sampling harness 5031. It can be understood that setting up a connection between the two battery modules 504 by a connecting component 1000 can reduce the number of components in the battery pack 500, thereby simplifying the structure of the battery pack 500. It should be noted that the number of battery modules 504 and the connection relationship between them and the connecting component 1000 in the above embodiment are only introduced as an example.

[0105] Referring to Figures 9 to 13 , the battery pack 100 includes the electrical connection structure described above. The battery pack 100 also includes: at least two battery modules 113; a battery wiring harness; and of the at least two battery modules 113, one battery module 113 is connected to a first connector 200, the other battery module 113 is connected to a second connector 300, and the battery wiring harness is connected to an adapter 400. This achieves a connection between the two battery modules 113 and between the two battery modules 113 and the battery wiring harness. These connections require only three components: the first connector 200, the second connector 300, and the adapter 400, resulting in a simple connection and a minimal number of components.

[0106] The battery tray has a tray longitudinal beam 104 , and the tray longitudinal beam 104 has a receiving groove 105 . The battery harness is received in the receiving groove 105 and is electrically insulated from the tray longitudinal beam 104 .

[0107] In Figure 9, the battery tray includes a pair of transverse side beams 101 and a pair of longitudinal side beams 102, and the transverse side beams 101 and the longitudinal side beams 102 are connected together to form a frame structure. However, the present application can also adopt an integrally cast or integrally stamped battery tray structure. Since the battery wiring harness is accommodated in the receiving groove 105 of the tray longitudinal beam 104 and is electrically insulated from the tray longitudinal beam 104, most of the battery wiring harness can be protected by the tray longitudinal beam 104. When the battery module in the battery accommodating space 103 thermally runs away, the adverse effects on the battery wiring harness are reduced. Although the receiving groove 105 in this embodiment is formed on the tray longitudinal beam 104, the transverse side beam 101 and the longitudinal side beam 102 can also have a receiving groove 105. Therefore, other beam components such as the tray longitudinal beam 104, the transverse side beam 101 and the longitudinal side beam 102 can all be referred to as structural beams, and the structural beam has a receiving groove 105.

[0108] Optionally, as shown in FIG9 , the battery wiring harness includes a high-voltage wiring harness or a low-voltage wiring harness. The high-voltage wiring harness includes a high-voltage cable 106 and a high-voltage cable duct 107. The high-voltage cable 106 is made of materials such as copper and aluminum and is used to make high-voltage electrical connections with the battery module, such as for example, for the busbars of the various battery modules. The high-voltage cable duct 107 is made of an insulating material, and the high-voltage cable 106 is accommodated in the high-voltage cable duct 107. The high-voltage cable duct 107 is then accommodated in the accommodating groove 105, thereby achieving electrical insulation between the high-voltage cable 106 and the tray longitudinal beam 104.

[0109] 10 , optionally, the low-voltage wiring harness includes a sampling bus 108. The sampling bus 108 includes a plurality of sampling lines 1081, which are wrapped together by an insulation layer to form a sampling bus 108. The low-voltage wiring harness can also include other signal lines.

[0110] 11 , the battery pack further includes a low-voltage harness trough 109 . The low-voltage harness trough 109 is made of insulating material, and the sampling bus 108 is accommodated within the low-voltage harness trough 109 . The low-voltage harness trough 109 is accommodated within the accommodating slot 105 , thereby achieving electrical insulation between the sampling bus 108 or other low-voltage harnesses and the tray longitudinal beam 194 .

[0111] As shown in Figure 10 , the sampling bus 108 has multiple sampling connectors, including sampling pieces 1082 and quick-connect connectors 1083. As shown in Figure 11 , the low-voltage harness slot 109 has multiple openings 1091, from which the sampling connectors, including sampling pieces 1082 and quick-connect connectors 1083, extend. Openings 1091 are then sealed with a sealant.

[0112] The low-voltage harness duct 109 and the high-voltage cable tray duct 107 can both be formed by extrusion of composite materials, which is simple to manufacture.

[0113] Optionally, the tray longitudinal beam 104 is an extruded U-shaped beam, and the receiving groove 105 is formed on the top of the tray longitudinal beam 104, which facilitates the arrangement of the battery harness.

[0114] As shown in Figure 9, the battery tray further includes a tray crossbeam 110. The tray longitudinal beams 104 intersect with the tray crossbeam 110, thereby dividing the battery tray into multiple battery accommodating spaces 103. The tray longitudinal beams 104 and the tray crossbeams 103 can jointly improve the structural strength of the battery tray.

[0115] As more clearly seen in Figure 12 , at least two battery modules 113 are installed within the battery compartment 103. The sampling member 1082 of the battery harness is welded or riveted to the adapter 400. One battery module 113 is connected to the first connector 200, and the other is connected to the second connector 300. In this way, the battery modules 113 can transmit sampling signals to the sampling bus 108 via the adapter 400, the first connector 200, and the second connector 300.

[0116] As can be seen more clearly in FIG. 13 , the battery module 113 is installed in the battery accommodation space 103 , and the quick-connect connector 1083 of the sampling bus 108 is plugged into the sampling adapter harness plug 1131 of the battery module 113 .

[0117] 9 , one transverse side beam 101 is provided with a front distribution box 111, and the other transverse side beam 101 is provided with a rear distribution box 112. The sampling connector includes a quick-plug connector 1083, which is plugged into a low-voltage plug (not shown) of the front distribution box 111 or the rear distribution box 112.

[0118] Optionally, the receiving slot 105 passes through the tray longitudinal beam 104 in the longitudinal direction, so that the sampling bus 108 can be protected by the tray longitudinal beam 104 until the quick-plug connector 1083 of the sampling line 1081 extends into the front distribution box 111 or the rear distribution box 112.

[0119] Although in this embodiment, the electrical connection structure shown in Figures 1 to 8 is applied to the battery pack 100, the electrical connection structure in this application can also be applied to the connection between other electrical components that require electrical connection, such as inverters, air conditioners, etc.

[0120] The embodiment further provides a car, which is equipped with the battery pack 100 as described above, or uses the electrical connection structure and connection assembly 1000 as described above to connect electrical parts that need to be connected.

[0121] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0122] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electrical connection structure, characterized in that: include: A first connecting member (200), wherein the first connecting member (200) is provided with a first positioning hole (201); A second connecting member (300), wherein the second connecting member (300) is provided with a second positioning hole (301); An adapter (400), wherein the adapter (400) is provided with a first boss (401) and a second boss (402); The first boss (401) corresponds in shape to the first positioning hole (201), and the second boss (402) corresponds in shape to the second positioning hole (301).

2. The electrical connection structure according to claim 1, characterized in that: When the first connecting member (200), the second connecting member (300) and the adapter (400) are connected, there is no overlapping portion between the first connecting member (200) and the second connecting member (300) in the Z direction.

3. The electrical connection structure according to claim 1, characterized in that: The first connecting member (200) comprises a first positioning portion (202), the first positioning portion (202) is provided with the first positioning hole (201), the first positioning hole (201) is a waist-shaped hole, and the first boss (401) is a waist-shaped boss; The second connecting member (300) comprises a second positioning portion (302), the second positioning portion (302) is provided with the second positioning hole (301), the second positioning hole (301) is a waist-shaped hole, and the second boss (402) is a waist-shaped boss.

4. The electrical connection structure according to claim 3, characterized in that: The long axis of the first boss (401) is arranged at an angle to the long axis of the adapter (400); The long axis of the second boss (402) is arranged at an angle to the long axis of the adapter (400).

5. The electrical connection structure according to claim 3, characterized in that: When the first connecting member (200), the second connecting member (300) and the adapter (400) are connected, the sum of the areas of the first positioning portion (202) and the second positioning portion (302) is smaller than the area of ​​the adapter (400).

6. The electrical connection structure according to claim 3, characterized in that: The first connecting member (200) further comprises a first transition portion (203), wherein the first transition portion (203) is arranged at an angle to the first positioning portion (202); The second connecting member (300) further comprises a second transition portion (303), wherein the second transition portion (303) is arranged at an angle to the second positioning portion (302).

7. The electrical connection structure according to claim 6, characterized in that: When the first connecting member (200), the second connecting member (300) and the adapter (400) are connected, the first transition portion (203) and the second transition portion (303) are respectively located on two sides of the adapter (400).

8. The electrical connection structure according to claim 6, characterized in that: The first connecting member (200) further comprises a first connecting portion (205), wherein the first connecting portion (205) is spaced apart from the first transition portion (203); The second connecting member (300) further comprises a second connecting portion (305), and the second connecting portion (305) is arranged at a distance from the second transition portion (303).

9. The electrical connection structure according to claim 8, characterized in that: When the first connecting member (200), the second connecting member (300) and the adapter (400) are connected, the first connecting portion (205) is further away from the adapter (400) than the first transition portion (203), and the second connecting portion (305) is further away from the adapter (400) than the second transition portion (303).

10. The electrical connection structure according to claim 3, characterized in that: The first positioning portion (202) has a first edge (206) parallel to the length direction of the first positioning hole (201), and the second positioning portion (302) has a second edge (206) parallel to the length direction of the second positioning hole (301), and when the first connecting member (200), the second connecting member (300) and the adapter (400) are connected, there is a gap between the first edge (206) and the second edge (206).

11. A connection assembly (1000) for connecting between a sampling harness (5031) and a battery cell (502), characterized in that: The connection assembly (1000) comprises: An electrical connection structure, the electrical connection structure being constructed as the electrical connection structure according to any one of claims 1 to 10, the adapter (400) being used for electrically connecting to the battery core (502), and the adapter (400) being provided with a connecting portion (11); An electrical connector (20) is used to connect the connecting portion (11) and the sampling harness (5031); one end of the electrical connector (20) connected to the connecting portion (11) is provided with a retaining portion, and the retaining portion is used to maintain the relative position of the electrical connector (20) and the connecting portion (11).

12. The connection assembly (1000) according to claim 11, characterized in that: The electrical connector (20) comprises two retaining portions (22) and a connecting piece (21) connected between the two retaining portions (22), and the two retaining portions (22) are respectively connected to the connecting portion (11).

13. The connection assembly (1000) according to claim 12, characterized in that: The retaining portion (22) comprises a first connecting surface (221), the connecting portion (11) comprises a second connecting surface (111), and the first connecting surface (221) and the second connecting surface (111) are in abutment with each other.

14. The connection assembly (1000) according to claim 13, characterized in that: The connecting portion (11) comprises a protrusion (12), and the two retaining portions (22) are located on both sides of the protrusion (12) to fix the electrical connector (20); or, The connecting portion (11) comprises a groove (13), and the two retaining portions (22) respectively abut against the inner surface (132) of the groove (13) to fix the electrical connector (20).

15. The connection assembly (1000) according to claim 14, characterized in that: The retaining portion (22) is elastic.

16. The connection assembly (1000) according to claim 15, characterized in that: The electrical connector (20) comprises a pre-bent section (23), wherein the pre-bent section (23) is connected between the connecting piece (21) and the retaining portion (22).

17. The connection assembly (1000) according to claim 16, characterized in that: The connecting portion (11) comprises a protrusion (12), and the minimum distance between the two retaining portions (22) is smaller than the width dimension of the protrusion (12); or, the connecting portion (11) comprises a groove (13), and the maximum distance between the two retaining portions (22) is larger than the width dimension of the groove (13).

18. The connection assembly (1000) according to claim 14, characterized in that: The adapter (400) comprises a convex block (14), wherein the convex block (14) is arranged on the outer surface (122) of the protrusion (12) or the inner surface (132) of the groove (13), and the convex block (14) extends toward the retaining portion (22); The retaining portion (22) comprises a hollow area (222), the position of the hollow area (222) being arranged to correspond to the position of the protrusion (14), and the protrusion (14) is used to extend into and abut against the hollow area (222) to limit the relative position of the adapter (400) and the electrical connector (20).

19. The connection assembly (1000) according to claim 18, characterized in that: Projections of the hollow areas (222) of the two retaining portions (22) on the surface of one of the retaining portions (22) partially overlap or are spaced apart from each other.

20. The connection assembly (1000) according to claim 14, characterized in that: The adapter (400) comprises a card slot (15), wherein the card slot (15) is provided on the outer surface (122) of the protrusion (12) or the inner surface (132) of the groove (13), and the card slot (15) is recessed toward the inner surface (132) of the protrusion (12) or the groove (13); The retaining portion (22) comprises a boss (223), the position of the boss (223) being arranged to correspond to the position of the slot (15), and the boss (223) being used to extend into and abut against the slot (15) to limit the relative position of the adapter (400) and the electrical connector (20).

21. The connection assembly (1000) according to claim 20, characterized in that: Projections of the bosses (223) of the two retaining portions (22) on the surface of one of the retaining portions (22) partially overlap or are spaced apart from each other.

22. The connection assembly (1000) according to any one of claims 14 to 21, characterized in that: The protrusion (12) or the groove (13) is provided with a chamfer (16), and the chamfer (16) is provided on the top surface (121) of the protrusion (12) or the notch of the groove (13), and the chamfer (16) is used to guide the retaining portion (22) to extend into the protrusion (12) or the groove (13).

23. The connection assembly (1000) according to claim 22, characterized in that The protrusion (12) is in a square shape, and the retaining portion (22) is attached to the side wall (5012) of the square protrusion (12) to be fixed to the protrusion (12); or, The groove (13) is in the shape of a square, and the retaining portion (22) is fitted to the inner wall of the square groove (13) to be fixed to the groove (13).

24. The connection assembly (1000) according to any one of claims 12 to 21, characterized in that: A positioning portion (25) is provided on the surface of the connecting piece (21) facing away from the adapter (400), and the positioning portion (25) is used to realize a positioning function when the electrical connecting piece (20) and the adapter (400) are welded.

25. The connection assembly (1000) according to claim 24, characterized in that The positioning portion (25) comprises a positioning hole (251), and a positioning column (17) is provided on the surface of the adapter (400) that is in contact with the connecting piece (21). The positioning column (17) is arranged to match the position and shape of the positioning hole (251), and the positioning column (17) is used to extend into the positioning hole (251) to limit the relative position of the adapter (400) and the electrical connector (20).

26. The connection assembly (1000) according to claim 25, characterized in that The positioning hole (251) is circular in shape, corresponding to the positioning column (17) which is cylindrical in shape.

27. The connection assembly (1000) according to any one of claims 12 to 21, characterized in that: The connection assembly (1000) further comprises an electrical connection portion (30), wherein the electrical connection portion (30) is fixed to the adapter (400) and is used to electrically connect to the battery core (502).

28. The connection assembly (1000) according to claim 27, characterized in that The adapter (400) further comprises a boss (18), wherein the boss (18) is spaced apart from the connecting portion (11), and one boss (18) is matched and fixed with one electrical connecting portion (30).

29. A battery pack, characterized in that: include: The electrical connection structure according to any one of claims 1 to 10 or the connection assembly (1000) according to any one of claims 11 to 28.

30. The battery pack according to claim 29, characterized in that: Also includes: at least two battery modules (113); Battery wiring harness; Among the at least two battery modules (113), one battery module (113) is connected to the first connector (200), the other battery module (113) is connected to the second connector (300), and the battery wiring harness is connected to the adapter (400).

31. The battery pack according to claim 30, characterized in that: The battery pack further comprises: A battery tray has a structural beam, the structural beam has a receiving groove (105), the battery harness is received in the receiving groove (105) and is insulated from the structural beam.

32. The battery pack according to claim 31, characterized in that: The battery harness comprises a sampling bus, wherein the sampling bus has a sampling component (1082), and the sampling component (1082) is connected to the adapter (400).

33. The battery pack according to claim 32, characterized in that: It also includes a low-voltage harness slot (109), the sampling bus is accommodated in the low-voltage harness slot (109), and the low-voltage harness slot (109) is accommodated in the accommodation slot (105).

34. The battery pack according to claim 29, characterized in that: Also includes: A battery cell (502) and a sampling harness (5031); wherein The connection component (1000) is connected between the sampling harness (5031) and the battery cell (502).

35. The battery pack according to claim 34, characterized in that: The battery pack comprises at least two battery modules (504), each of the battery modules (504) is composed of a plurality of battery cells (502) connected in series or in parallel, and the two battery modules (504) are bridged by the connection component (1000) and sampled through the sampling harness (5031).

36. A car, characterized in that: The automobile adopts the electrical connection structure as described in any one of claims 1-10, or adopts the connection assembly (1000) as described in any one of claims 11-28, or is installed with a battery pack as described in any one of claims 29-35.

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