Box body for battery pack, battery pack and vehicle

Abstract

The utility model provides a box body for a battery pack, the battery pack and a vehicle, the box body comprises a bottom plate and a plurality of side plates which surround the peripheral side of the bottom plate and are connected in sequence, so that a mounting cavity is defined by the side plates; the cross beams extend in the first direction and are located in the mounting cavity; the longitudinal beams extend in the second direction perpendicular to the first direction and are located in the mounting cavity; the sides, away from the bottom plate, of the longitudinal beams and / or the transverse beams are used for installing the first main high-voltage connecting pieces, so that the problem that the battery pack in the related technology has the large height is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and more specifically, to a housing for a battery pack, a battery pack, and a vehicle. Background Technology

[0002] Currently, a battery pack has been proposed in which the mounting structure is fixed between adjacent cells in the battery pack. The mounting structure includes a support portion located between adjacent cells and a mounting portion located on top of the support portion. A copper busbar mounting unit for vertical mounting of copper busbars is provided on the top of the mounting portion, and a wire harness mounting unit for horizontal mounting of wire harnesses is provided on the side of the mounting portion.

[0003] However, in this type of battery pack, the copper busbars and low-voltage wiring harnesses are all fixed to the support component and are located above the battery cells. This not only results in a large battery pack height but also a complex structural layout and poor reliability. Utility Model Content

[0004] The main objective of this invention is to provide a housing, battery pack, and vehicle for a battery pack, in order to solve the problem of the large height of battery packs in related technologies.

[0005] To achieve the above objectives, according to a first aspect of the present invention, a housing for a battery pack is provided, comprising: a base plate and a plurality of side plates sequentially connected around the periphery of the base plate to jointly form a mounting cavity; a plurality of crossbeams, each extending along a first direction and located within the mounting cavity; and a plurality of longitudinal beams, each extending along a second direction perpendicular to the first direction and located within the mounting cavity; wherein the side of the plurality of longitudinal beams and / or the plurality of crossbeams away from the base plate is used to mount a first main high-voltage connector.

[0006] Instruction manual PN281303HZYWLN

[0007] Furthermore, the plurality of crossbeams (14) are spaced apart in the mounting cavity (13) along a second direction perpendicular to the first direction, so as to divide the mounting cavity (13) into a power distribution box mounting cavity (15) and a plurality of battery mounting cavities (16) located on one side of the power distribution box mounting cavity (15); the plurality of longitudinal beams (17) are spaced apart along the first direction, and each of the battery mounting cavities (16) has a portion of the beam segment of each of the longitudinal beams (17), so as to be divided into a plurality of battery cavity portions (18).

[0008] Furthermore, the plurality of longitudinal beams (17) are also used to install low-voltage wiring harnesses (2), and the low-voltage wiring harnesses (2) and the first main high-voltage connector (3) are respectively located on different longitudinal beams (17).

[0009] Furthermore, the height of each longitudinal beam is less than the height of each crossbeam and less than the height of the battery assembly; and / or the height of each side plate is less than the height of each crossbeam and less than the height of the battery assembly; and / or the crossbeam is provided with a clearance opening for avoiding the low-voltage wiring harness or the first main high-voltage connector.

[0010] Furthermore, the plurality of longitudinal beams includes a first longitudinal beam and a second longitudinal beam; wherein the first longitudinal beam is used to fix one of the low-voltage wiring harness or the first main high-voltage connector, and the second longitudinal beam is used to fix the other of the low-voltage wiring harness or the first main high-voltage connector.

[0011] Furthermore, the multiple crossbeams include a first crossbeam, a second crossbeam, and a third crossbeam arranged sequentially at intervals along the second direction; wherein, the two ends of each longitudinal beam are in contact with the first crossbeam and the third crossbeam respectively, and the second crossbeam is provided with two clearance grooves for avoiding the first longitudinal beam and the second longitudinal beam respectively.

[0012] Furthermore, the multiple side plates include a first side plate that is close to and parallel to the first crossbeam, and the first side plate is spaced apart from the first crossbeam to form a distribution box mounting cavity.

[0013] Furthermore, the multiple side plates include a second side plate that is close to and parallel to the third crossbeam, and the second side plate is in contact with the third crossbeam; wherein, the first longitudinal beam is used to fix the first part of the low voltage harness PN281303HZYWLN, the second longitudinal beam is used to fix the first part of the first main high voltage connector, the first crossbeam is used to fix the second part of the low voltage harness, and the third crossbeam is used to fix the third part of the low voltage harness and the second part of the first main high voltage connector.

[0014] According to a second aspect of the present invention, a battery pack is provided, comprising: a housing, the housing described above; a first main high-voltage connector, the first main high-voltage connector being mounted on one of a plurality of longitudinal beams; a plurality of battery components, the plurality of battery components being mounted one-to-one in a plurality of battery cavities in the housing; and a high-voltage distribution box, the high-voltage distribution box being mounted in the distribution box mounting cavity of the housing.

[0015] Furthermore, the first main high-voltage connector includes a connecting plate, which includes a longitudinal plate and a transverse plate connected to each other. The longitudinal plate is fixed to the longitudinal beam, and the transverse plate is fixed to the transverse beam and located at the end of the longitudinal plate away from the high-voltage distribution box. The end of the longitudinal plate away from the transverse plate is connected to the high-voltage distribution box, and the end of the transverse plate away from the longitudinal plate is connected to the negative terminal connector of multiple battery modules.

[0016] Furthermore, the longitudinal plate includes a first longitudinal plate, a transition plate, and a second longitudinal plate connected in sequence. The surface of the first longitudinal plate is parallel to the longitudinal beam, and the surface of the second longitudinal plate is perpendicular to the longitudinal beam.

[0017] Furthermore, the first main high-voltage connector includes multiple first plate fixing members, which are spaced apart along the extension direction of the connecting plate, and the end of each first plate fixing member away from the connecting plate is used to fix it to the longitudinal beam or the transverse beam.

[0018] Furthermore, the battery pack includes a second main high-voltage connector, which is fixed to the crossbeam and located on the side of the multiple longitudinal beams near the high-voltage distribution box. One end of the second main high-voltage connector is connected to the high-voltage distribution box, and the other end of the second main high-voltage connector is connected to the positive terminal connector of the multiple battery modules.

[0019] Instruction manual PN281303HZYWLN

[0020] Furthermore, the battery pack includes: a first high-voltage connector for connecting two adjacent battery components located in the same battery cavity; and a second high-voltage connector for connecting two battery components located in two adjacent battery cavities.

[0021] Furthermore, the first high-voltage connector includes: a first plate, which is parallel to and spaced apart from the longitudinal beam; a plurality of second plates, which are arranged at a predetermined angle to the first plate, and are located at both ends of the first plate and on the side of the first plate away from the longitudinal beam; wherein the first plate and the plurality of second plates together form a clearance groove for avoiding the low-voltage wiring harness or the first main high-voltage connector; and a plurality of third plates, which are arranged one-to-one with the plurality of second plates, each third plate being parallel to the first plate, each third plate being located at the end of the corresponding second plate away from the first plate, and each third plate being located on the side of the corresponding second plate away from the other second plate for connection to the corresponding plurality of battery components.

[0022] Furthermore, the second high-voltage connector includes a fourth plate, a fifth plate, and a sixth plate connected in sequence. The fourth plate is located on one side of the fifth plate near one of the multiple crossbeams, and the sixth plate is located above the multiple battery modules. There are two sixth plates, which are spaced apart along the length of the fourth plate and are respectively connected to the two corresponding battery modules.

[0023] Furthermore, the battery pack also includes a BMS bracket (4) and a BMS (5) mounted on the BMS bracket (4), the BMS bracket (4) being mounted on at least one of the plurality of longitudinal beams (17); the BMS bracket includes: a mounting plate, the BMS being mounted on the mounting plate and located on the side of the mounting plate away from the plurality of battery components; a recessed structure disposed on the mounting plate for connection with the longitudinal beam; and a limiting groove disposed on the mounting plate for limiting the BMS.

[0024] Instruction manual PN281303HZYWLN

[0025] Furthermore, the battery pack includes: a cover, which is disposed on the housing; the cover includes a main cover and a cover protrusion located on the side of the main cover away from the housing and at the end of the main cover away from the high-voltage distribution box, the main cover being fixedly connected to the housing, and the inner side of the cover protrusion forming a clearance space for accommodating the BMS.

[0026] Furthermore, the area of ​​the projection of the box cover protrusion onto a predetermined plane parallel to the base plate is S1, and the area of ​​the projection of the main cover onto the predetermined plane is S2; wherein, 1 / 4≤S1 / S2≤1 / 3.

[0027] According to a third aspect of the present invention, a vehicle is provided, including the aforementioned battery pack.

[0028] Applying the technical solution of this utility model, the battery pack housing of this utility model includes: a base plate and multiple side plates sequentially connected around the periphery of the base plate to jointly form a mounting cavity; multiple crossbeams, each extending along a first direction and located within the mounting cavity; and multiple longitudinal beams, each extending along a second direction perpendicular to the first direction and located within the mounting cavity; wherein the side of the multiple longitudinal beams and / or multiple crossbeams away from the base plate is used to install the first main high-voltage connector. Thus, by setting multiple crossbeams and multiple longitudinal beams within the mounting cavity to install components such as the first main high-voltage connector of the battery pack, the housing of this utility model solves the problem of the large height of battery packs in related technologies, improves the overall reliability of the battery pack, simplifies the fixing method of the first main high-voltage connector, and reduces the production cost of the battery pack. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0030] Figure 1 An isometric view of an embodiment of the battery pack according to the present invention is shown in a first direction;

[0031] Instruction manual PN281303HZYWLN

[0032] Figure 2 It shows Figure 1 A top view of the battery pack shown;

[0033] Figure 3 It shows Figure 1 The isometric view of the battery pack housing shown;

[0034] Figure 4 It shows Figure 1 An exploded view of a portion of the battery pack structure is shown.

[0035] Figure 5 It shows Figure 1 The battery pack shown is an isometric view in the second direction;

[0036] Figure 6 It shows Figure 1 The battery pack shown is an isometric view in the third direction;

[0037] Figure 7 It shows Figure 1 An exploded view of the battery pack shown.

[0038] Figure 8 It shows Figure 1 The diagram shows the structure of the low-voltage wiring harness, the first main high-voltage connector, and the second main high-voltage connector of the battery pack.

[0039] Figure 9 It shows Figure 1 The diagram shows a cross-sectional view of the battery pack at the BMS.

[0040] Figure 10 It shows Figure 1 The diagram shows the structural schematic of the BMS bracket for the battery pack.

[0041] Figure 11 It shows Figure 1 A schematic diagram of the first high-voltage connector of the battery pack shown.

[0042] Figure 12 It shows Figure 1 The diagram shows the structure of the second high-voltage connector of the battery pack.

[0043] The above figures include the following reference numerals:

[0044] 1. Enclosure; 11. Base plate; 12. Side plate; 121. First side plate; 122. Second side plate; 13. Mounting cavity; 14. Crossbeam; 141. First crossbeam; 142. Second crossbeam; 143. Third crossbeam; 15. Distribution box mounting cavity; 16. Battery mounting cavity; 17. Longitudinal beam; 171. First longitudinal beam; 172. Second longitudinal beam; 18. Battery cavity section; 19. First support frame;

[0045] 2. Low-voltage wiring harness; 21. Low-voltage connecting wire; 22. Outer sleeve; 23. Wiring harness fastener; 24. First longitudinal pipe section; 25. First transverse pipe section; 26. Second transverse pipe section;

[0046] Instruction manual PN281303HZYWLN

[0047] 3. First main high-voltage connector; 31. Connecting plate; 32. Longitudinal plate; 33. Transverse plate; 34. First longitudinal plate; 35. Transition plate; 36. Second longitudinal plate; 37. First plate fixing component;

[0048] 4. BMS bracket; 41. Mounting plate; 42. Recessed structure; 43. Limiting groove;

[0049] 5. BMS;

[0050] 6. Battery assembly;

[0051] 7. High-voltage distribution box;

[0052] 8. Box lid; 81. Main lid body; 82. Box lid protrusion;

[0053] 9. CCS component;

[0054] 10. Second main high-voltage connector;

[0055] 20. First high-voltage connector; 201. First plate; 202. Second plate; 203. Third plate;

[0056] 30. Second high-voltage connector; 301. Fourth plate; 302. Fifth plate; 303. Sixth plate. Detailed Implementation

[0057] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0058] Instruction manual PN281303HZYWLN

[0059] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0060] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0061] like Figures 1 to 12 As shown, this utility model provides a housing for a battery pack, comprising: a base plate 11 and a plurality of side plates 12 sequentially connected around the periphery of the base plate 11 to form a mounting cavity 13; a plurality of crossbeams 14, each extending along a first direction and located within the mounting cavity 13; and a plurality of longitudinal beams 17, each extending along a second direction perpendicular to the first direction and located within the mounting cavity 13; wherein the side of the plurality of longitudinal beams 17 and / or the plurality of crossbeams 14 away from the base plate 11 is used to mount a first main high-voltage connector 3.

[0062] In this way, the housing of this utility model installs the battery pack and the first main high voltage connector 3 and other components by setting multiple crossbeams 14 and multiple longitudinal beams 17 in the mounting cavity 13, which solves the problem of the battery pack having a large height in related technologies, improves the overall reliability of the battery pack, simplifies the fixing method of the first main high voltage connector 3, and reduces the production cost of the battery pack.

[0063] The first and second directions of this utility model are perpendicular to each other and both parallel to the base plate 11.

[0064] Multiple crossbeams 14 are spaced apart along a second direction to divide the mounting cavity 13 into a distribution box mounting cavity 15 and multiple battery mounting cavities 16 located on one side of the distribution box mounting cavity 15; multiple longitudinal beams 17 extend along the second direction and are spaced apart along a first direction, and each battery mounting cavity 16 has a portion of the beam of each longitudinal beam 17 to be divided into multiple battery cavity portions 18; wherein, the side of the multiple longitudinal beams 17 away from the base plate 11 is also used to install the low-voltage wiring harness 2 and the BMS bracket 4, and the low-voltage wiring harness 2 and the first main high-voltage connector 3 are respectively located on different longitudinal beams 17.

[0065] Specifically, the height of each longitudinal beam 17 is less than the height of each crossbeam 14 and less than the height of the battery assembly 6; and / or the height of each side plate 12 is less than the height of each crossbeam 14 and less than the height of the battery assembly 6; and / or the crossbeam 14 is provided with a clearance opening for avoiding the low-voltage wiring harness 2 or the first main high-voltage connector 3.

[0066] This allows the battery pack to require a sufficiently small space in the vertical direction.

[0067] like Figure 3 As shown, the plurality of longitudinal beams 17 include a first longitudinal beam 171 and a second longitudinal beam 172; wherein, the first longitudinal beam 171 is used to fix one of the low-voltage wiring harness 2 or the first main high-voltage connector 3, and the second longitudinal beam 172 is used to fix the other of the low-voltage wiring harness 2 or the first main high-voltage connector 3.

[0068] like Figure 3 As shown, the plurality of crossbeams 14 include a first crossbeam 141, a second crossbeam 142 and a third crossbeam 143 arranged sequentially and spaced apart along the second direction; wherein, the two ends of each longitudinal beam 17 are in contact with the first crossbeam 141 and the third crossbeam 143 respectively, and the second crossbeam 142 is provided with two clearance grooves for avoiding the first longitudinal beam 171 and the second longitudinal beam 172 respectively.

[0069] Instruction manual PN281303HZYWLN

[0070] like Figure 3As shown, the plurality of side plates 12 include a first side plate 121 that is close to and parallel to the first crossbeam 141. The first side plate 121 and the first crossbeam 141 are spaced apart to form a distribution box mounting cavity 15.

[0071] like Figure 3 As shown, the multiple side plates 12 include a second side plate 122 that is close to and parallel to the third crossbeam 143, and the second side plate 122 and the third crossbeam 143 are in contact with each other; wherein, the first longitudinal beam 171 is used to fix the first part of the low voltage harness 2, the second longitudinal beam 172 is used to fix the first part of the first main high voltage connector 3, the first crossbeam 141 is used to fix the second part of the low voltage harness 2, and the third crossbeam 143 is used to fix the third part of the low voltage harness 2 and the second part of the first main high voltage connector 3.

[0072] The first longitudinal beam 171 on the housing of this utility model is used to fix the first part of the low voltage wiring harness 2 and the BMS bracket 4. The two ends of the first longitudinal beam 171 are respectively connected to the first crossbeam 141 and the third crossbeam 143 to strengthen the first crossbeam 141 and the third crossbeam 143 against expansion force and to strengthen the overall structural strength of the housing.

[0073] The second longitudinal beam 172 on the housing of this utility model is used to fix the first part of the first main high voltage connector 3 and the first part of the BMS bracket 4. The two ends of the second longitudinal beam 172 are respectively connected to the first crossbeam 141 and the third crossbeam 143 to strengthen the first crossbeam 141 and the third crossbeam 143 against expansion force and to strengthen the overall structural strength of the housing.

[0074] The first crossbeam 141 on the housing of this utility model is used to fix the second part of the low-voltage wiring harness 2 and constrain the expansion of the battery assembly 6 in its own length direction, thereby improving the overall strength of the battery pack and resisting the lateral extrusion force generated inside the battery pack.

[0075] The second crossbeam 142 on the housing of this utility model is used to constrain the expansion of the battery assembly 6 in its own length direction, improve the overall strength of the battery pack, and resist the lateral extrusion force generated inside the battery pack.

[0076] Instruction manual PN281303HZYWLN

[0077] The third crossbeam 143 on the housing of this utility model is used to fix the second and third parts of the low-voltage wiring harness 2 and the second part of the first main high-voltage connector 3, as well as to seal the rear side of the housing, and to constrain the expansion of the battery assembly 6 in its own length direction, thereby improving the overall strength of the battery pack and resisting the lateral extrusion force generated inside the battery pack.

[0078] like Figures 1 to 12As shown, this utility model provides a battery pack, including: a housing 1, which is the aforementioned housing; a low-voltage wiring harness 2, which is mounted on one of the plurality of longitudinal beams 17 of the housing 1; a first main high-voltage connector 3, which is mounted on one of the plurality of longitudinal beams 17; a BMS bracket 4, which is mounted on at least one of the plurality of longitudinal beams 17; a BMS 5, which is mounted on the BMS bracket 4; a plurality of battery components 6, which are mounted one-to-one in the plurality of battery cavities 18 of the housing 1; and a high-voltage distribution box 7, which is mounted in the distribution box mounting cavity 15 of the housing.

[0079] like Figure 8 As shown, the low-voltage wiring harness 2 includes: a plurality of low-voltage connecting wires 21, each of which is connected to the BMS5; and an outer sleeve 22, which is sleeved on the plurality of low-voltage connecting wires 21 and at least a portion of the outer sleeve 22 is fixed to the longitudinal beam 17.

[0080] like Figure 8 As shown, the low-voltage wiring harness 2 includes multiple wiring harness fasteners 23, which are spaced apart along the extension direction of the outer sleeve 22. The end of each wiring harness fastener 23 away from the outer sleeve 22 is used to fix it to the longitudinal beam 17 or the transverse beam 14.

[0081] like Figure 8 As shown, the outer sleeve 22 includes a first longitudinal pipe section 24 and a first transverse pipe section 25 and a second transverse pipe section 26 located at both ends of the first longitudinal pipe section 24. The first longitudinal pipe section 24 is fixed to the longitudinal beam 17, and the first transverse pipe section 25 and the second transverse pipe section 26 are respectively fixed to two of the plurality of transverse beams 14.

[0082] like Figure 3 As shown, the housing 1 includes two first support frames 19. The two first support frames 19 are respectively set at both ends of one of the multiple longitudinal beams 17 and are located on the side of the corresponding longitudinal beam 17 away from the bottom plate 11. The middle part of the first longitudinal pipe section 24 is fixed on the corresponding longitudinal beam 17, and the two ends of the first longitudinal pipe section 24 are respectively fixed on the two first support frames 19.

[0083] Specifically, the middle part of the first longitudinal pipe section 24 is fixed to the corresponding first longitudinal beam 171 by the first part of the multiple wire harness fasteners 23, the two ends of the first longitudinal pipe section 24 are respectively fixed to the two first support frames 19 by the second part of the multiple wire harness fasteners 23, the first transverse pipe section 25 is fixed to the first transverse beam 14 by the third part of the multiple wire harness fasteners 23, and the second transverse pipe section 26 is fixed to the third transverse beam 143 by the third part of the multiple wire harness fasteners 23.

[0084] like Figure 8 As shown, the first main high-voltage connector 3 includes a connecting plate 31, which includes a longitudinal plate 32 and a transverse plate 33 connected to each other. The longitudinal plate 32 is fixed to the longitudinal beam 17, and the transverse plate 33 is fixed to the transverse beam 14 and located at the end of the longitudinal plate 32 away from the high-voltage distribution box 7. The end of the longitudinal plate 32 away from the transverse plate 33 is connected to the high-voltage distribution box 7, and the end of the transverse plate 33 away from the longitudinal plate 32 is connected to the negative terminal connector of the multiple battery modules 6.

[0085] like Figure 8 As shown, the longitudinal plate 32 includes a first longitudinal plate 34, a transition plate 35, and a second longitudinal plate 36 connected in sequence. The surface of the first longitudinal plate 34 is parallel to the longitudinal beam 17, and the surface of the second longitudinal plate 36 is perpendicular to the longitudinal beam 17.

[0086] like Figure 8 As shown, the first main high voltage connector 3 includes a plurality of first plate fixing members 37, which are spaced apart along the extension direction of the connecting plate 31. The end of each first plate fixing member 37 away from the connecting plate 31 is used to fix it to the longitudinal beam 17 or the transverse beam 14.

[0087] Specifically, the first longitudinal plate 34 is fixed to the second longitudinal beam 172 by the first part of the plurality of first plate fixing parts 37, the second longitudinal plate 36 is fixed to the second support frame on the second longitudinal beam 172 by the second part of the plurality of first plate fixing parts 37, and the transverse plate 33 is fixed to the third transverse beam 143 by the second part of the plurality of first plate fixing parts 37.

[0088] like Figure 7 and Figure 8 As shown, the battery pack includes a second main high-voltage connector 10. The second main high-voltage connector 10 is fixed to the crossbeam 14 and located on the side of the plurality of longitudinal beams 17 near the high-voltage distribution box 7. One end of the second main high-voltage connector 10 is connected to the high-voltage distribution box 7, and the other end of the second main high-voltage connector 10 is connected to the positive terminal connector of the plurality of battery components 6.

[0089] Specifically, the first part of the second main high voltage connector 10 is fixed to the first crossbeam 141 by a plurality of second plate fasteners, and the second part of the second main high voltage connector 10 is located in the distribution box mounting cavity 15 to avoid occupying too much space of the battery pack in the height direction.

[0090] like Figure 2As shown, the battery pack includes: a first high-voltage connector 20, which is used to connect two adjacent battery components 6 located in the same battery cavity 18; and a second high-voltage connector 30, which is used to connect two battery components 6 located in two adjacent battery cavities 18 respectively.

[0091] like Figure 11 As shown, the first high-voltage connector 20 includes: a first plate 201, which is parallel to and spaced apart from the longitudinal beam 17; and two second plates 202, which are arranged at a predetermined angle to the first plate 201. The two second plates 202 are located at both ends of the first plate 201 and are located on the side of the first plate 201 away from the longitudinal beam 17. The first plate 201 and the two second plates 202 together form a structure to avoid the low-voltage wiring harness 2 or the first... The main high-voltage connector 3 has a clearance groove; two third plates 203, which are arranged one-to-one with the two second plates 202. Each third plate 203 is parallel to the first plate 201. Each third plate 203 is located at the end of the corresponding second plate 202 away from the first plate 201. Each third plate 203 is located on the side of the corresponding second plate 202 away from the other second plate 202 for connection with the corresponding two battery assemblies 6.

[0092] Instruction manual PN281303HZYWLN

[0093] Specifically, the first high-voltage connector 20 of the battery pack of this utility model is arranged in an inverted "V" shape, and the first plate 201 is located between the low-voltage wiring harness 2 and the first longitudinal beam 171, so as to facilitate welding and connection with the two battery components 6 located on opposite sides of the first longitudinal beam 171.

[0094] like Figure 12 As shown, the second high-voltage connector 30 includes a fourth plate 301, a fifth plate 302, and a sixth plate 303 connected in sequence. The fourth plate 301 is located on one side of the fifth plate 302 near one of the multiple crossbeams 14. The sixth plate 303 is located above the multiple battery modules 6. There are two sixth plates 303. The two sixth plates 303 are spaced apart along the length of the fourth plate 301 and are respectively connected to the two corresponding battery modules 6.

[0095] Specifically, the second high-voltage connector 30 of this utility model is used to weld and connect with the corresponding two battery components 6, and the second high-voltage connector 30 is arranged in a "Z" shape. The fifth plate 302 and the sixth plate 303 are both located above the corresponding crossbeam 14 and are both lower than the top surface of the multiple battery components 6, so as to save the installation height of the battery pack.

[0096] like Figure 9 and Figure 10 As shown, the BMS bracket 4 includes: a mounting plate 41 located on the side of the CCS assembly 9 away from the plurality of battery components 6, and the BMS5 mounted on the mounting plate 41 and located on the side of the mounting plate 41 away from the CCS assembly 9; a recessed structure 42 disposed on the mounting plate 41 for connection with the longitudinal beam 17; and a limiting groove 43 disposed on the mounting plate 41 for limiting the BMS5.

[0097] Specifically, the BMS5 and the BMS bracket 4 are connected by multiple first fasteners, and there are two recessed structures 42. The two recessed structures 42 are connected to the first longitudinal beam 171 and the second longitudinal beam 172 respectively by multiple second fasteners to ensure the connection strength between the BMS bracket 4 and the housing 1.

[0098] like Figure 7 As shown, the battery pack includes: a cover 8, which covers the housing 1; and a CCS assembly 9, which is disposed between multiple battery assemblies 6 and the cover 8.

[0099] Instruction manual PN281303HZYWLN

[0100] like Figure 8 As shown, the box cover 8 includes a main cover body 81 and a box cover protrusion 82 located on the side of the main cover body 81 away from the box body 1 and at the end of the main cover body 81 away from the high voltage distribution box 7. The main cover body 81 is fixedly connected to the box body 1, and the inner side of the box cover protrusion 82 forms a clearance space for accommodating the BMS5.

[0101] Specifically, the area of ​​the projection of the box cover protrusion 82 onto a predetermined plane parallel to the base plate 11 is S1, and the area of ​​the projection of the main cover 81 onto the predetermined plane is S2; wherein, 1 / 4≤S1 / S2≤1 / 3.

[0102] In this way, the battery pack of this invention has a large height only at BMS5, while having a small height at other locations. While ensuring the proper placement of BMS5, the installation of the battery pack of this invention does not require a large installation space.

[0103] In the first embodiment of the battery pack cover 8 of this utility model, the ratio of the area of ​​the projection of the cover protrusion 82 on a predetermined plane parallel to the base plate 11 to the area of ​​the projection of the main cover 81 on the predetermined plane to S2 is 1 / 4.

[0104] In the second embodiment of the battery pack cover 8 of this utility model, the ratio of the area of ​​the projection of the cover protrusion 82 on a predetermined plane parallel to the base plate 11 to the area of ​​the projection of the main cover 81 on the predetermined plane to S2 is 0.28.

[0105] In the third embodiment of the battery pack cover 8 of this utility model, the ratio of the area of ​​the projection of the cover protrusion 82 on a predetermined plane parallel to the base plate 11 to the area of ​​the projection of the main cover 81 on the predetermined plane to S2 is 0.3.

[0106] In the fourth embodiment of the battery pack cover 8 of this utility model, the ratio of the area of ​​the projection of the cover protrusion 82 on a predetermined plane parallel to the base plate 11 to the area of ​​the projection of the main cover 81 on the predetermined plane to S2 is 1 / 3.

[0107] This utility model also provides a vehicle including the aforementioned battery pack.

[0108] Instruction manual PN281303HZYWLN

[0109] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0110] The battery pack housing of this invention includes: a base plate 11 and a plurality of side plates 12 sequentially connected around the periphery of the base plate 11 to form a mounting cavity 13; a plurality of crossbeams 14, each extending along a first direction and located within the mounting cavity 13; and a plurality of longitudinal beams 17, each extending along a second direction perpendicular to the first direction and located within the mounting cavity 13. The side of the plurality of longitudinal beams 17 and / or the plurality of crossbeams 14 away from the base plate 11 is used to mount the first main high-voltage connector 3. Thus, by using a plurality of crossbeams 14 and longitudinal beams 17 within the mounting cavity 13 to mount the first main high-voltage connector 3 and other components of the battery pack, this invention solves the problem of excessive battery pack height in related technologies, improves the overall reliability of the battery pack, simplifies the fixing method to the first main high-voltage connector 3, and reduces the production cost of the battery pack.

[0111] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0112] For ease of description, spatial relative terms such as "above," "over," "on the upper surface," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0113] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0114] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A housing for a battery pack, characterized in that, include: A base plate (11) and a plurality of side plates (12) connected in sequence around the periphery of the base plate (11) together form a mounting cavity (13); Multiple crossbeams (14), each of which extends along a first direction and is located within the mounting cavity (13); Multiple longitudinal beams (17), each of which extends along a second direction perpendicular to the first direction and is located within the mounting cavity (13); The side of the plurality of longitudinal beams (17) and / or the plurality of transverse beams (14) away from the base plate (11) is used to install the first main high-voltage connector (3).

2. The housing for a battery pack according to claim 1, characterized in that, The plurality of crossbeams (14) are spaced apart along the second direction to divide the mounting cavity (13) into a power distribution box mounting cavity (15) and a plurality of battery mounting cavities (16) located on one side of the power distribution box mounting cavity (15); The plurality of longitudinal beams (17) are arranged at intervals along the first direction, and each of the battery mounting cavities (16) has a portion of the longitudinal beam (17) to be divided into a plurality of battery cavity portions (18).

3. The housing for a battery pack according to claim 2, characterized in that, The plurality of longitudinal beams (17) are also used to install low-voltage wiring harnesses (2), the low-voltage wiring harnesses (2) and the first main high-voltage connector (3) are respectively located on different longitudinal beams (17).

4. The housing for a battery pack according to claim 3, characterized in that, The height of each of the longitudinal beams (17) is less than the height of each of the transverse beams (14) and less than the height of the battery assembly (6); and / or The height of each of the side panels (12) is less than the height of each of the crossbeams (14) and less than the height of the battery assembly (6); and / or The crossbeam (14) is provided with a clearance opening for avoiding the low-voltage wiring harness (2) or the first main high-voltage connector (3).

5. The housing for a battery pack according to claim 3, characterized in that, The plurality of longitudinal beams (17) include a first longitudinal beam (171) and a second longitudinal beam (172); The first longitudinal beam (171) is used to fix one of the low-voltage wiring harness (2) or the first main high-voltage connector (3), and the second longitudinal beam (172) is used to fix the other of the low-voltage wiring harness (2) or the first main high-voltage connector (3).

6. The housing for a battery pack according to claim 5, characterized in that, The plurality of crossbeams (14) include a first crossbeam (141), a second crossbeam (142) and a third crossbeam (143) arranged sequentially at intervals along the second direction; Each of the longitudinal beams (17) has its two ends in contact with the first crossbeam (141) and the third crossbeam (143) respectively, and the second crossbeam (142) is provided with two clearance grooves for avoiding the first longitudinal beam (171) and the second longitudinal beam (172) respectively.

7. The housing for a battery pack according to claim 6, characterized in that, The plurality of side plates (12) include a first side plate (121) that is close to and parallel to the first crossbeam (141), the first side plate (121) being spaced apart from the first crossbeam (141) to form the power distribution box mounting cavity (15).

8. The housing for a battery pack according to claim 6, characterized in that, The plurality of side plates (12) in claim PN281303HZYWLN include a second side plate (122) that is close to and parallel to the third crossbeam (143), and the second side plate (122) is in contact with the third crossbeam (143); The first longitudinal beam (171) is used to fix the first part of the low-voltage harness (2), the second longitudinal beam (172) is used to fix the first part of the first main high-voltage connector (3), the first crossbeam (141) is used to fix the second part of the low-voltage harness (2), and the third crossbeam (143) is used to fix the third part of the low-voltage harness (2) and the second part of the first main high-voltage connector (3).

9. A battery pack, characterized in that, include: Box (1), wherein the box (1) is the box according to any one of claims 1 to 8; The first main high-voltage connector (3) is installed on one of the plurality of longitudinal beams (17); Multiple battery components (6) are installed one-to-one in multiple battery cavities (18) of the housing (1); High voltage distribution box (7) is installed in the distribution box mounting cavity (15) of the enclosure (1).

10. The battery pack according to claim 9, characterized in that, The first main high-voltage connector (3) includes a connecting plate (31), the connecting plate (31) comprising: A longitudinal plate (32) and a transverse plate (33) are connected. The longitudinal plate (32) is fixed to the longitudinal beam (17), and the transverse plate (33) is fixed to the transverse beam (14) and located at the end of the longitudinal plate (32) away from the high-voltage distribution box (7). The end of the longitudinal plate (32) of claim PN281303HZYWLN away from the transverse plate (33) is connected to the high-voltage distribution box (7), and the end of the transverse plate (33) away from the longitudinal plate (32) is connected to the negative terminal of the plurality of battery components (6).

11. The battery pack according to claim 10, characterized in that, The longitudinal plate (32) includes a first longitudinal plate (34), a transition plate (35), and a second longitudinal plate (36) connected in sequence. The surface of the first longitudinal plate (34) is parallel to the longitudinal beam (17), and the surface of the second longitudinal plate (36) is perpendicular to the longitudinal beam (17).

12. The battery pack according to claim 10, characterized in that, The first main high voltage connector (3) includes a plurality of first plate fixing members (37), which are spaced apart along the extension direction of the connecting plate (31). The end of each first plate fixing member (37) away from the connecting plate (31) is used to fix it to the longitudinal beam (17) or the transverse beam (14).

13. The battery pack according to claim 9, characterized in that, The battery pack includes a second main high-voltage connector (10), which is fixed to the crossbeam (14) and located on the side of the plurality of longitudinal beams (17) near the high-voltage distribution box (7). One end of the second main high-voltage connector (10) is connected to the high-voltage distribution box (7), and the other end of the second main high-voltage connector (10) is connected to the positive terminal connector of the plurality of battery components (6).

14. The battery pack according to claim 9, characterized in that, The battery pack includes: The first high-voltage connector (20) is used to connect two adjacent battery assemblies (6) located in the same battery cavity (18); The second high-voltage connector (30) is used to connect two battery assemblies (6) located in two adjacent battery cavity portions (18).

15. The battery pack according to claim 14, characterized in that, The first high-voltage connector (20) includes: The first plate (201) is parallel to and spaced apart from the longitudinal beam (17); Multiple second plates (202) are arranged at a predetermined angle to the first plate (201). The multiple second plates (202) are located at both ends of the first plate (201) and are all located on the side of the first plate (201) away from the longitudinal beam (17). The first plate (201) and the multiple second plates (202) together form a clearance groove for avoiding the low-voltage wire harness (2) or the first main high-voltage connector (3). A plurality of third plates (203) are provided in a one-to-one correspondence with a plurality of second plates (202). Each third plate (203) is parallel to the first plate (201). Each third plate (203) is located at the end of the corresponding second plate (202) away from the first plate (201). Each third plate (203) is located on the side of the corresponding second plate (202) away from the other second plate (202) for connection with the corresponding plurality of battery assemblies (6).

16. The battery pack according to claim 14, characterized in that, The second high-voltage connector (30) includes a fourth plate (301), a fifth plate (302), and a sixth plate (303) connected in sequence. The fourth plate (301) is located on the side of the fifth plate (302) near one of the plurality of crossbeams (14). The sixth plate (303) is located above the plurality of battery modules (6). There are two sixth plates (303), and the two sixth plates (303) are spaced apart along the length of the fourth plate (301) and are respectively connected to the two corresponding battery modules (6).

17. The battery pack according to claim 9, characterized in that, The battery pack also includes a BMS bracket (4) and a BMS (5) mounted on the BMS bracket (4), the BMS bracket (4) being mounted on at least one of the plurality of longitudinal beams (17); the BMS bracket (4) includes: Mounting plate (41), wherein the BMS (5) is mounted on the mounting plate (41) and located on the side of the mounting plate (41) away from the plurality of battery assemblies (6); A recessed structure (42) is provided on the mounting plate (41) to connect with the longitudinal beam (17); A limiting groove (43) is provided on the mounting plate (41) to limit the BMS (5).

18. The battery pack according to claim 17, characterized in that, The battery pack includes: A lid (8) is placed over the box body (1); The cover (8) includes a main cover body (81) and a cover protrusion (82) located on the side of the main cover body (81) away from the box body (1) and on the end of the main cover body (81) away from the high voltage distribution box (7). The main cover body (81) is fixedly connected to the box body (1), and the inner side of the cover protrusion (82) forms a clearance space for accommodating the BMS (5).

19. The battery pack according to claim 18, characterized in that, The area of ​​the projection of the box cover protrusion (82) onto a predetermined plane parallel to the base plate (11) is S1, and the area of ​​the projection of the main cover (81) onto the predetermined plane is S2; wherein, 1 / 4≤S1 / S2≤1 / 3.

20. A vehicle, characterized in that, The battery pack includes any one of claims 9 to 19.

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