Battery pack, assembling method and vehicle

Abstract

The invention relates to a battery pack, an assembling method and a vehicle, the battery pack comprises at least two battery cells and at least one heat exchange component, the two sides of each heat exchange component are each provided with at least one battery cell, the heat exchange component is provided with a through hole penetrating in the first direction, the battery pack further comprises a connecting piece, and the connecting piece is connected with the battery cells through the through holes in the first direction. And the connecting piece penetrates through the through hole in the first direction and is connected with the two battery cells located on the two sides of the heat exchange component. According to the battery pack, the through holes are formed in the heat exchange component, so that the battery cells on the two sides of the heat exchange component can be connected in the mode that the connecting pieces penetrate through the through holes, the battery cells and the heat exchange component can be assembled and connected very conveniently, and the production efficiency is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power batteries, and in particular to a battery pack, an assembly method, and a vehicle. Background Art

[0002] With the development of battery technology, the battery charging rate is getting higher and higher, and the demand for battery heat dissipation is also getting higher and higher.

[0003] The battery pack in the related art uses a method of connecting the heat exchange components to the battery cells to improve the heat dissipation of the battery cells. However, this connection method makes the assembly connection between adjacent battery cells difficult to operate, affects the assembly efficiency, and further affects the production efficiency of the battery pack. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure relates to a battery pack, an assembly method, and a vehicle.

[0005] In one aspect of the present disclosure, there is provided a battery pack, comprising at least two battery cells and at least one heat exchange component, wherein at least one battery cell is respectively arranged on both sides of each heat exchange component, and a through hole penetrating along a first direction is opened on the heat exchange component. The battery pack also comprises a connecting member, which passes through the through hole along the first direction and is connected to the two battery cells located on both sides of the heat exchange component.

[0006] Optionally, the connector includes a male connector and a female connector that are connected to each other, the male connector can pass through the through hole to be connected to the female connector, and the male connector and the female connector are respectively arranged on two connected battery cells.

[0007] Optionally, a slot is provided on the female connector, and an inserting portion is provided on the male connector, and the inserting portion can be inserted into the slot.

[0008] Optionally, the female connector includes a first plate body and a second plate body, the first plate body and the second plate body are arranged relative to each other in a second direction to form the slot, the first plate body is connected to the battery cell, the second plate body is provided with a first protrusion protruding toward the first plate body, the second direction is the thickness direction of the first plate body, the second direction is perpendicular to the first direction, and the plug-in portion is located between the first protrusion and the first plate body.

[0009] Optionally, a process via hole is formed on the first protrusion and penetrates the second plate body along the second direction to expose the first plate body.

[0010] Optionally, the female connector includes a first plate body and a second plate body, the first plate body and the second plate body are arranged relatively to each other along a second direction, the first plate body is connected to the second plate body on both sides along a third direction to enclose and form the slot, the second direction is the thickness direction of the first plate body, and the first direction, the second direction and the third direction are perpendicular to each other.

[0011] Optionally, the male connector includes a third plate body, one end of the third plate body is connected to the battery core, the other end of the third plate body is set as the plug-in part, and a second protrusion is formed on the third plate body, and the second protrusion is set to limit the insertion depth of the plug-in part.

[0012] Optionally, the plug-in portion has a connecting surface, and the connecting surface contacts the inner wall surface of the slot.

[0013] Optionally, a guide portion is provided at one end of the plug-in portion for inserting into the slot, so that the plug-in portion can be easily inserted into the slot.

[0014] Optionally, a conductive layer is provided on the surface of the plug-in portion and / or the inner wall surface of the slot.

[0015] Optionally, the battery core is bonded to the corresponding heat exchange component.

[0016] Optionally, the connecting member is electrically connected to the electrode terminal of the battery cell.

[0017] Optionally, the battery cell includes two electrode terminals, the two electrode terminals are located at both ends of the battery cell in a second direction, a plurality of the battery cells are arranged along the second direction to form a battery cell column, the battery pack includes at least two battery cell columns, at least two battery cell columns are arranged along the first direction, the heat exchange component is arranged between two adjacent battery cell columns, at least one connecting member connects two battery cells in adjacent battery cell columns, and the second direction is perpendicular to the first direction.

[0018] A second aspect of the present disclosure also provides a vehicle, comprising the above-mentioned battery pack.

[0019] A third aspect of the present disclosure further provides a battery pack assembly method, the battery pack assembly method comprising:

[0020] At least two battery cells are mounted on both sides of the heat exchange component;

[0021] The connecting piece is passed through the through hole of the heat exchange component to connect the battery cells located on both sides of the heat exchange component.

[0022] Optionally, the connector includes a male connector and a female connector, and the male connector and the female connector are respectively arranged on the battery cells located on both sides of the heat exchange component;

[0023] Wherein, passing the connecting member through the through hole of the heat exchange component to connect the battery cells located on both sides of the heat exchange component includes:

[0024] The male connector is passed through the through hole of the heat exchange component and inserted into the female connector to connect the battery cells on both sides of the heat exchange component.

[0025] In the above technical solution, by setting the heat exchange component between the two battery cells, surface-to-surface heat exchange can be achieved, thereby improving the large-area cooling or heating of the battery cells to improve the performance of the entire battery pack. By setting a through hole on the heat exchange component, the battery cells on both sides of the heat exchange component can be connected by the connector passing through the through hole, so that the battery cells and the heat exchange component can be assembled and connected very conveniently to ensure production efficiency. At the same time, there is no need to extend the connector to bypass the heat exchange component, which will not increase the space occupancy rate of the battery cell too much, and will not increase the size of the entire battery pack, meeting the space requirements of the vehicle. Moreover, since there is no need to bypass the heat exchange component, the size of the heat exchange component can be set larger, which can provide a large amount of heat exchange medium to flow and improve the cooling or heating effect.

[0026] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0028] Figure 1 It is a structural schematic diagram of the connection relationship between the battery cell and the heat exchange component of a battery pack according to an embodiment of the present disclosure;

[0029] Figure 2 is an exploded view of the connection relationship between the battery cell and the heat exchange component of a battery pack according to an embodiment of the present disclosure;

[0030] Figure 3 is a schematic structural diagram of a battery cell according to an embodiment of the present disclosure;

[0031] Figure 4 is a schematic structural diagram of a female connector according to an embodiment of the present disclosure;

[0032] Figure 5 is a schematic structural diagram of a male connector according to an embodiment of the present disclosure;

[0033] Figure 6 It is a structural schematic diagram of a part of a battery pack according to an embodiment of the present disclosure;

[0034] Figure 7 It is a schematic flow chart of a battery pack assembly method according to an embodiment of the present disclosure.

[0035] Description of Reference Numerals

[0036] 1. Battery cell, 2. Heat exchange component, 21. Through hole, 3. Connector, 31. Male connector, 311. Plug-in portion, 312. Third plate, 313. Second protrusion, 314. Guide portion, 32. Female connector, 321. Slot, 322. First plate, 323. Second plate, 324. First protrusion, 4. Adhesive portion, A. First direction, B. Second direction, C. Third direction. DETAILED DESCRIPTION

[0037] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0038] In the present disclosure, unless otherwise stated, directional words such as "upper, lower, left, right" are usually defined by the direction of the drawing, and "inner" and "outer" refer to the inside and outside of the relevant parts. In addition, the terms "first", "second", etc. are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0039] In the absence of special explanation and limitation, terms such as "connect", "install", "connected", "fixed" and the like may be interpreted broadly, and may be implemented by methods known to those skilled in the art, such as welding and other non-detachable methods, bolts and other detachable methods, or molding and other one-piece forming methods. The above definitions are only used to assist in the description of the present disclosure and should not be construed as limiting.

[0040] With the development of battery technology, the battery charging rate is getting higher and higher, and the demand for battery heat dissipation is also getting higher and higher. Therefore, more methods are used to dissipate heat from battery cells, such as surface-to-surface liquid cooling.

[0041] The battery pack in the related art adopts a method of connecting the heat exchange component to the surface of the battery cell to improve the heat dissipation of the battery cell, that is, the heat exchange component is located on the side of the battery cell. However, due to the size interference of the heat exchange component, when adjacent battery cells need to be connected to each other, this connection method will make the assembly connection between adjacent battery cells difficult to operate, affecting the assembly efficiency, and then affecting the production efficiency of the battery pack. At the same time, the heat exchange component will change the position of the connection between the battery cells, so that the connection structure needs to bypass the heat exchange component to achieve connection, thereby increasing the overall size of the battery pack.

[0042] For this reason, Figure 1-Figure 6 As shown, one aspect of the present disclosure provides a battery pack, comprising at least two battery cells 1 and at least one heat exchange component 2, wherein at least one battery cell 1 is arranged on both sides of each heat exchange component 2, and a through hole 21 penetrating along a first direction is opened on the heat exchange component 2. The battery pack also includes a connector 3, which passes through the through hole 21 along the first direction and is connected to the two battery cells 1 located on both sides of the heat exchange component 2.

[0043] The heat exchange component 2 is located between the two battery cells 1, so that the heat exchange component 2 can cool or heat the battery cells 1 located on both sides thereof. It should be noted that when the temperature of the heat exchange medium in the heat exchange component 2 is lower than that of the battery cell 1, the battery cell 1 can be cooled, and when the temperature of the heat exchange medium in the heat exchange component 2 is higher than that of the battery cell 1, the battery cell 1 can be heated. Here, the heat exchange component 2 and the heat exchange medium only refer to structures capable of heat exchange, and do not impose too many restrictions.

[0044] In the above technical solution, by setting the heat exchange component 2 between the two battery cells 1, surface-to-surface heat exchange can be achieved, thereby improving the large-area cooling or heating of the battery cells 1 to improve the performance of the entire battery pack. By setting a through hole 21 on the heat exchange component 2, the battery cells 1 on both sides of the heat exchange component 2 can be connected by the connector 3 passing through the through hole 21, thereby the battery cells 1 and the heat exchange component 2 can be assembled and connected very conveniently to ensure production efficiency. At the same time, there is no need to extend the connector 3 to bypass the heat exchange component 2, which will not increase the space occupancy rate of the battery cell 1 too much, and will not increase the size of the entire battery pack, meeting the space requirements of the vehicle. Moreover, since there is no need to bypass the heat exchange component 2, the size of the heat exchange component 2 can be set larger, which can provide a large amount of heat exchange medium to flow and improve the cooling or heating effect.

[0045] like Figure 3 As shown, optionally, in one embodiment of the present disclosure, the connector 3 includes a male connector 31 and a female connector 32 that are connected to each other, the male connector 31 can pass through the through hole 21 to connect with the female connector 32, and the male connector 31 and the female connector 32 are respectively arranged on two connected battery cells 1.

[0046] Among them, the male connector 31 and the female connector 32 can be connected and matched, which can further improve the assembly efficiency and thus improve the production efficiency. It can be understood that the battery cells 1 located on both sides of the heat exchange component 2 can be directly connected and fixed through the cooperation of the male connector 31 and the female connector 32 without too much complicated operation. In other words, the male connector 31 of one of the two battery cells 1 located on both sides of the heat exchange component 2 can pass through the through hole 21 to connect with the female connector 32 of the other battery cell 1. It should be noted that the structures of the male connector 31 and the female connector 32 are different.

[0047] Optionally, in another embodiment of the present disclosure, the structure of the connector 3 on each battery cell 1 is the same, and the connectors 3 of the two battery cells 1 on both sides of the heat exchange component 2 are both extended into the through hole 21, and the connectors 3 of the two battery cells 1 are spliced ​​and fixed in the through hole 21. In some examples, the connector 3 can be connected by screws. In other embodiments, the connector 3 can be a buckle, and the two battery cells 1 on both sides of the heat exchange component 2 can be connected by the buckle.

[0048] like Figure 4 and Figure 5 As shown, optionally, in one embodiment of the present disclosure, a slot 321 is provided on the female connector 32 , and an inserting portion 311 is provided on the male connector 31 , and the inserting portion 311 can be inserted into the slot 321 .

[0049] Among them, the plug-in portion 311 of the male connector 31 of one of the two battery cells 1 located on both sides of the heat exchange component 2 can pass through the through hole 21 and be plugged into the slot 321 of the female connector 32 of the other battery cell 1, so that the two battery cells 1 located on both sides of the heat exchange component 2 are connected. Through plug-in cooperation, the connection and assembly efficiency can be further improved.

[0050] Optionally, the slot 321 may be a through hole along the first direction, or may be a receiving cavity having an opening at only one end.

[0051] like Figure 4 As shown, optionally, in one embodiment of the present disclosure, the female connector 32 includes a first plate body 322 and a second plate body 323, and the first plate body 322 and the second plate body 323 are arranged relative to each other in the second direction to form a slot 321, the first plate body 322 is connected to the battery cell 1, and the second plate body 323 is provided with a first protrusion 324 protruding toward the first plate body 322, the second direction is the thickness direction of the first plate body, the second direction is perpendicular to the first direction, and the plug-in portion 311 is located between the first protrusion 324 and the first plate body 322.

[0052] There is a space between the first plate 322 and the second plate 323, and one side of the second plate 323 along the third direction is bent toward the first plate 322 and connected to the first plate 322, so that the space between the first plate 322 and the second plate 323 is set as a slot 321 to accommodate the insertion of the plug-in portion 311, and the first protrusion 324 and the side of the first plate 322 facing the second plate 323 can jointly clamp the plug-in portion 311. The side of the first plate 322 facing away from the second plate 323 can be welded to the electrode terminal of the battery cell 1, so that the female connector 32 is fixed on the battery cell 1.

[0053] Among them, the first protrusion 324 is formed by the middle part of the second plate body 323 protruding toward the first plate body 322, that is, the straight-line distance between the first protrusion 324 and the first plate body 322 is smaller than the straight-line distance between the second plate body 323 and the first plate body 322, so that after the plug-in part 311 is inserted into the slot 321, the first protrusion 324 can clamp and fix the plug-in part 311 to ensure that the connection between the battery cells 1 on both sides of the heat exchange component 2 is stable.

[0054] Optionally, in another embodiment of the present disclosure, the female connector 32 includes a fixing seat, a slot 321 is provided on one side of the fixing seat, and an elastic clamping piece is provided on the inner wall surface of the slot 321. The elastic clamping piece can contact the plug-in portion 311 and cooperate with the inner wall surface of the slot 321 to clamp and fix the plug-in portion 311.

[0055] Optionally, in one embodiment of the present disclosure, a process via is provided on the first protrusion 324 and penetrates the second plate 323 in the second direction to expose the first plate 322. The process via is provided so that the first plate 322 can be welded and fixed to the electrode terminal of the battery cell. It is understandable that the first plate 322 is connected to the electrode terminal of the battery cell by laser welding. Since the second plate 323 is located on the side of the first plate 322 away from the battery cell, the second plate 323 is blocked, and the process via provided can directly heat the first plate 322 to achieve welding.

[0056] Optionally, in some other embodiments of the present disclosure, the female connector 32 includes a first plate body 322 and a second plate body 323, the first plate body 322 and the second plate body 323 are arranged relatively to each other along the second direction, and the first plate body 322 is connected to the second plate body 323 on both sides along the third direction to enclose and form a slot, the second direction is the thickness direction of the first plate body, and the first direction, the second direction and the third direction are perpendicular to each other.

[0057] There is a space between the first plate 322 and the second plate 323, and the two sides of the second plate 323 along the third direction are bent toward the first plate 322 and connected to the first plate 322, so that the space between the first plate 322 and the second plate 323 is set as a slot 321 to accommodate the insertion of the plug-in portion 311, and the first protrusion 324 and the side of the first plate 322 facing the second plate 323 can jointly clamp the plug-in portion 311, and the two sides of the second plate 323 along the third direction can also limit the plug-in portion 311. The side of the first plate 322 facing away from the second plate 323 can be welded to the electrode terminal of the battery cell 1, so that the female connector 32 is fixed on the battery cell 1.

[0058] like Figure 5As shown, optionally, in one embodiment of the present disclosure, the male connector 31 includes a third plate body 312, one end of the third plate body 312 is connected to the battery cell 1, the other end of the third plate body 312 is set as the plug-in portion 311, and a second protrusion 313 is formed on the third plate body 312, and the second protrusion 313 is set to limit the insertion depth of the plug-in portion 311 and to drive the plug-in portion 311 to contact the inner wall surface of the slot 321.

[0059] Among them, one end of the third plate body 312 can be welded and fixed to the electrode terminal of the battery cell 1, and the other end of the third plate body 312 extends and protrudes out of the corresponding battery cell 1, so that the other end of the third plate body 312 can pass through the through hole 21 on the heat exchange component 2 and connect with the female connector 32 on the battery cell 1 on the other side.

[0060] The second protrusion 313 is formed by the arch of the middle part of the third plate 312, so that when the plug-in part 311 is inserted into the slot 321, the second protrusion 313 can abut against the notch of the slot 321 to limit the insertion depth of the plug-in part 311. At the same time, due to the arch effect of the second protrusion 313, a certain elasticity can be generated, so that after the plug-in part 311 is inserted into the slot 321, it can better contact with the slot wall of the slot 321 or the first protrusion 324, thereby increasing the contact area. The plug-in part 311 has a connection surface, which contacts the inner wall surface of the slot 321.

[0061] The second protrusion 313 may be an arc-shaped structure formed by bending the third plate 312 , thereby absorbing manufacturing tolerance and improving assembly accuracy.

[0062] Optionally, in another embodiment of the present disclosure, the male connector 31 includes a mounting seat, a plug-in portion 311 is formed on one side of the mounting seat, and the plug-in portion 311 protrudes from the battery cell 1 so that the plug-in portion 311 can pass through the through hole 21 .

[0063] Optionally, in one embodiment of the present disclosure, a guide portion 314 is provided at one end of the plug-in portion 311 for inserting into the slot 321, so that the plug-in portion 311 can be easily inserted into the slot 321. The provided guide portion 314 can facilitate the plug-in portion 311 to be inserted into the slot 321 more smoothly, further improving assembly efficiency.

[0064] In some examples, a bevel angle is set at the end of one end of the plug-in portion 311 for inserting into the slot 321, and the bevel angle is set as a guide portion 314 to reduce the size of the end of one end of the plug-in portion 311 for inserting into the slot 321, so that the plug-in portion 311 can be inserted into the slot 321 more smoothly.

[0065] Optionally, in one embodiment of the present disclosure, a conductive layer and / or a thermally conductive structural adhesive is provided on the surface of the plug-in portion 311 and / or the inner wall surface of the slot 321. Such a setting can improve the conductive contact area between the slot wall of the slot 321 and the surface of the plug-in portion 311 and the connection reliability. In some examples, the conductive layer may be a conductive coating and / or a thermally conductive structural adhesive. In some examples, the surface of the plug-in portion 311 and the inner wall surface of the slot 321 are both provided with a conductive coating and a thermally conductive structural adhesive. It should be noted that the specific settings of the conductive coating and the thermally conductive structural adhesive can be adjusted as needed, and no excessive restrictions are imposed here.

[0066] Optionally, in one embodiment of the present disclosure, the battery cell 1 is bonded to the corresponding heat exchange component 2. Wherein, each battery cell 1 is provided with an adhesive portion 4 on one side facing the heat exchange component 2, and the battery cell 1 is bonded to the corresponding heat exchange component 2 through the adhesive portion 4, so that each battery cell 1 is connected to the corresponding heat exchange component 2 surface-to-surface.

[0067] The larger side of each battery cell 1 faces the heat exchange component 2, which can improve the cooling and heating effects, that is, the adhesive portion 4 is located on the larger side of the battery cell 1, and the adhesive portion 4 is clamped between the battery cell 1 and the heat exchange component 2. In some examples, the adhesive portion 4 is a planar layer, and the adhesive portion 4 is set as a double-sided adhesive or a heat-conducting structural adhesive, which can improve the bonding stability.

[0068] like Figure 2 As shown, optionally, in some examples, the battery cell 1 is configured as a rectangular parallelepiped structure. In other examples, the battery cell 1 is configured as a cubic structure or a cylindrical structure.

[0069] Optionally, in one embodiment of the present disclosure, the connector 3 is electrically connected to the electrode terminal of the battery cell 1. Thus, the battery cells 1 can be connected in series or in parallel as required.

[0070] like Figure 3 As shown, optionally, in some examples, the number of connectors 3 on each battery cell 1 is at least two, and the two connectors 3 are respectively connected to the positive and negative electrodes of the corresponding battery cells 1, and each connector 3 is configured to be conductive so that the two battery cells 1 located on both sides of the heat exchange component 2 can be connected in series or in parallel. By providing at least two connectors 3 on each battery cell 1, the positive and negative electrodes of the two battery cells 1 located on both sides of the heat exchange component 2 can be connected respectively, and more battery cells 1 can also be connected through the connectors 3, so that the connectors 3 can have two functions, one function is to assemble and fix the battery cells 1 located on both sides of the heat exchange component 2, and the other function is to realize the series and parallel connection of the battery cells 1.

[0071] In some examples, the connectors 3 are respectively welded to the electrode terminals of the corresponding battery cells 1 .

[0072] It should be noted that the plug-in portion 311 of the above embodiment contacts the inner wall surface of the slot 321 after being inserted into the slot 321, so that conductivity can be achieved, so that the two battery cells 1 located on both sides of the heat exchange component 2 can be conductive and can be connected in series or in parallel.

[0073] In some examples, each battery cell 1 is provided with electrode terminals at both ends along the second direction, and the two connectors 3 are respectively located at both ends of the two battery cells 1. That is, the male connector 31 and the female connector 32 can be respectively connected to the electrode terminals at both ends of the battery cell 1 in the second direction, and the polarities of the electrode terminals at both ends of the battery cell 1 in the second direction can be opposite.

[0074] In some examples, when two battery cells 1 located on both sides of the heat exchange component 2 need to be connected in series, the number of connectors 3 of the two battery cells 1 located on both sides of the heat exchange component 2 is two, and the male connector 31 of one of the battery cells 1 is connected to the electrode terminal with a positive polarity of the battery cell 1, and the female connector 32 of the other battery cell 1 is connected to the electrode terminal with a negative polarity of the battery cell 1. Therefore, when the male connector 31 and the female connector 32 are connected, the two battery cells 1 are directly connected in series, and can also be connected in series with other battery cells 1.

[0075] When two battery cells 1 located on both sides of the heat exchange component 2 need to be connected in parallel, the number of connectors 3 of the two battery cells 1 located on both sides of the heat exchange component 2 is four, wherein the electrode terminal with positive polarity of each battery cell 1 is respectively connected to the male connector 31 and the female connector 32, and the electrode terminal with negative polarity is also respectively connected to the male connector 31 and the female connector 32, the male connector 31 of the electrode terminal with positive polarity of one battery cell 1 is connected to the female connector 32 of the electrode terminal with positive polarity of another battery cell 1, and at the same time, the female connector 32 of the electrode terminal with negative polarity of one battery cell 1 is connected to the male connector 31 of the electrode terminal with negative polarity of another battery cell 1, thereby the two battery cells 1 are connected in parallel, and can continue to be connected in parallel with other adjacent battery cells 1.

[0076] like Figure 1 and Figure 6 As shown, optionally, in one embodiment of the present disclosure, the battery cell 1 includes two electrode terminals, the two electrode terminals are located at both ends of the battery cell 1 in the second direction, and multiple battery cells 1 are arranged along the second direction to form a battery cell column, and the battery pack includes at least two battery cell columns, at least two battery cell columns are arranged along the first direction, a heat exchange component 2 is provided between two adjacent battery cell columns, at least one connector 3 connects two battery cells 1 in adjacent battery cell columns, and the second direction is perpendicular to the first direction.

[0077] Wherein, a plurality of battery cells 1 are arranged on both sides of each heat exchange component 2, and the electrode terminals refer to the positive and negative output terminals of the battery cells.

[0078] In some examples, multiple battery cells 1 located on both sides of the heat exchange component 2 are arranged at intervals. The number of through holes 21 on each heat exchange component 2 can be one or more, and the multiple through holes 21 can be arranged at intervals along the second direction. The second direction can be the length direction of the heat exchange component 2, that is, the thickness direction of the first plate body 322, and the first direction can be the width direction of the heat exchange component 2.

[0079] There may be multiple battery cells 1 on both sides of a heat exchange component 2, that is, the length of the heat exchange component 2 is greater than the length of the battery cell 1. The specific length difference between the heat exchange component 2 and the battery cell 1 can be designed according to the size of the actual battery pack, and no excessive restrictions are imposed here. The battery cells 1 located on both sides of the same heat exchange component 2 are cooled or heated by the heat exchange component 2.

[0080] In some examples, the number of through holes 21 on each heat exchange component 2 is at least one, and multiple battery cells 1 located on both sides of the heat exchange component 2 are connected in series to form a battery cell column, and the connector 3 on one battery cell 1 in the battery cell column on both sides of the heat exchange component 2 is connected through the through hole 21; or,

[0081] There are multiple through holes 21 on each heat exchange component 2, and the multiple through holes 21 are arranged at intervals along the first direction. The multiple battery cells 1 located on both sides of the heat exchange component 2 are connected through the corresponding connectors 3 through the corresponding through holes 21. Among them, the connectors 3 of two adjacent battery cells 1 located on one side of the heat exchange component can share one through hole 21. In other words, the connectors 3 of two adjacent battery cells 1 located on one side of the heat exchange component 2 can be inserted into the same through hole 21.

[0082] Optionally, in another embodiment of the present disclosure, a heat exchange component 2 is disposed between every two battery cells 1. That is, two battery cells 1 and one heat exchange component 2 form a module.

[0083] like Figure 6 As shown, optionally, in one embodiment of the present disclosure, the battery pack includes a plurality of heat exchange components 2 and a plurality of battery cells 1, and a plurality of battery cells 1 are arranged at intervals along the second direction on both sides of each heat exchange component 2, and the plurality of heat exchange components 2 are arranged at intervals along the first direction. A row of battery cells is arranged between two heat exchange components 2.

[0084] Optionally, in one embodiment of the present disclosure, the heat exchange component 2 may be a heat exchange plate, that is, a plate-like structure, which can increase the heat exchange area, and the heat exchange plate may be a liquid cooling plate, in which a cavity is provided for the heat exchange medium to flow through. Of course, in other examples, the heat exchange component 2 may also be a heat exchange pipe.

[0085] Optionally, in an embodiment of the present disclosure, the battery pack further includes a shell and other structures, and the battery cell 1 and the heat exchange component 2 are arranged in the shell.

[0086] A second aspect of the present disclosure also provides a vehicle, comprising the above-mentioned battery pack.

[0087] A third aspect of the present disclosure further provides a battery pack assembly method, which can be specifically applied to the assembly of the above-mentioned battery pack. The battery pack assembly method includes:

[0088] S701, assembling at least two battery cells 1 on both sides of the heat exchange component 2;

[0089] S702 , passing the connector 3 through the through hole 21 of the heat exchange component 2 to connect the battery cells 1 located on both sides of the heat exchange component 2 .

[0090] The connector 3 includes a male connector 31 and a female connector 32 , and the male connector 31 and the female connector 32 are respectively arranged on the battery cells 1 located on both sides of the heat exchange component 2 .

[0091] The connecting member 3 is passed through the through hole 21 of the heat exchange component 2 to connect the battery cells 1 located on both sides of the heat exchange component 2, including:

[0092] The male connector 31 is passed through the through hole 21 of the heat exchange component 2 and inserted into the female connector 32 to connect the battery cells 1 located on both sides of the heat exchange component 2 .

[0093] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0094] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0095] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery pack, characterized in that: The battery pack includes at least two battery cells and at least one heat exchange component, wherein at least one battery cell is arranged on both sides of each heat exchange component, and a through hole penetrating along a first direction is opened on the heat exchange component. The battery pack also includes a connector, which passes through the through hole along the first direction and is connected to the two battery cells located on both sides of the heat exchange component.

2. The battery pack according to claim 1, characterized in that: The connector comprises a male connector and a female connector which are connected to each other. The male connector can pass through the through hole to connect with the female connector. The male connector and the female connector are respectively arranged on the two connected battery cells.

3. The battery pack according to claim 2, characterized in that: The female connector is provided with a slot, and the male connector is provided with an inserting portion, which can be inserted into the slot.

4. The battery pack according to claim 3, characterized in that: The female connector includes a first plate body and a second plate body, the first plate body and the second plate body are arranged relative to each other along a second direction to form the slot, the first plate body is connected to the battery cell, the second plate body is provided with a first protrusion protruding toward the first plate body, the second direction is the thickness direction of the first plate body, the second direction is perpendicular to the first direction, and the plug-in portion is located between the first protrusion and the first plate body.

5. The battery pack according to claim 4, characterized in that: The first protrusion is provided with a process via hole penetrating the second plate body along the second direction to expose the first plate body.

6. The battery pack according to claim 3, characterized in that: The female connector includes a first plate body and a second plate body, the first plate body and the second plate body are arranged opposite to each other along a second direction, the first plate body is connected to the second plate body on both sides along a third direction to enclose and form the slot, the second direction is the thickness direction of the first plate body, and the first direction, the second direction and the third direction are perpendicular to each other.

7. The battery pack according to claim 3, characterized in that: The male connector includes a third plate body, one end of which is connected to the battery core, the other end of which is arranged as the plug-in portion, a second protrusion is formed on the third plate body, and the second protrusion is arranged to limit the insertion depth of the plug-in portion.

8. The battery pack according to claim 3, characterized in that: The plug-in portion has a connecting surface, and the connecting surface contacts the inner wall surface of the slot.

9. The battery pack according to claim 3, characterized in that: One end of the plug-in portion used for inserting into the slot is provided with a guide portion so that the plug-in portion can be conveniently inserted into the slot.

10. The battery pack according to claim 3, characterized in that: A conductive layer is provided on the surface of the plug-in portion and / or the inner wall surface of the slot.

11. The battery pack according to claim 1, characterized in that: The battery core is bonded to the corresponding heat exchange component.

12. The battery pack according to any one of claims 1 to 10, characterized in that: The connecting member is electrically connected to the electrode terminal of the battery cell.

13. The battery pack according to claim 12, characterized in that: The battery cell includes two electrode terminals, and the two electrode terminals are located at both ends of the battery cell in a second direction. A plurality of the battery cells are arranged along the second direction to form a battery cell column. The battery pack includes at least two battery cell columns, and at least two battery cell columns are arranged along the first direction. The heat exchange component is arranged between two adjacent battery cell columns. At least one connecting member connects two battery cells in adjacent battery cell columns, and the second direction is perpendicular to the first direction.

14. A vehicle, characterized in that: A battery pack comprising the battery pack as claimed in any one of claims 1 to 13.

15. A battery pack assembly method, characterized in that: The battery pack assembly method comprises: At least two battery cells are mounted on both sides of the heat exchange component; The connecting piece is passed through the through hole of the heat exchange component to connect the battery cells located on both sides of the heat exchange component.

16. The battery pack assembly method according to claim 15, characterized in that: The connector includes a male connector and a female connector, and the male connector and the female connector are respectively arranged on the battery cells located on both sides of the heat exchange component; Wherein, passing the connecting member through the through hole of the heat exchange component to connect the battery cells located on both sides of the heat exchange component includes: The male connector is passed through the through hole of the heat exchange component and inserted into the female connector to connect the battery cells on both sides of the heat exchange component.

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