Battery module

Abstract

The utility model relates to the technical field of power batteries, and provides a battery module, the battery module comprises a shell, a battery cell and an electric connection assembly, the shell comprises a shell body and a packaging part, the shell body is provided with a containing cavity and an opening communicated with the containing cavity, the packaging part is detachably connected with the shell body to block the opening, the electric connection assembly is arranged in the containing cavity and connected to the shell, and the packaging part is detachably connected with the shell body. The battery cell is arranged in the accommodating cavity, is detachably connected with the electric connection assembly and is electrically connected with the electric connection assembly, and the battery cell can enter and exit from the accommodating cavity through the opening. According to the scheme, the problem that the whole battery module needs to be replaced after any battery cell of the battery module is damaged in the prior art can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and in particular to a battery module. Background Art

[0002] A battery module is assembled from multiple battery cells, and the multiple battery cells are connected in series or in parallel through an electrical connection assembly. In the battery modules of the prior art, the battery cells and the electrical connection assembly are welded and fixed, so that the two are connected and electrically contacted at the same time. However, this structure requires the replacement of the entire battery module if any battery cell is damaged, resulting in waste of battery cells and causing material and economic losses. Utility Model Content

[0003] In view of this, the present application provides a battery module to solve the problem in the prior art that the entire battery module needs to be replaced when any cell of the battery module is damaged.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A battery module comprises a housing, a battery cell and an electrical connection assembly:

[0006] The shell comprises a shell body and a packaging member, the shell body is provided with a receiving cavity and an opening communicating with the receiving cavity, and the packaging member is detachably connected to the shell body to block the opening;

[0007] The electrical connection assembly is disposed in the accommodating cavity and connected to the housing;

[0008] The battery core is disposed in the accommodating cavity, the battery core is detachably connected to the electrical connection assembly and is electrically connected to the electrical connection assembly, and the battery core can enter and exit the accommodating cavity through the opening.

[0009] Optionally, the shell body is provided with a slot, the battery cell is inserted into and cooperates with the slot, the shell body has a first inner wall opposite to the opening, and the extension direction of the slot is consistent with the direction from the opening to the first inner wall.

[0010] Optionally, the battery cell has a pole, and in the electrical connection assembly and the pole, one is provided with a snap-in piece, and the other is provided with a slot, the snap-in piece and the slot are snap-fitted together, and the pole and the electrical connection assembly achieve electrical contact through the cooperation of the snap-in piece and the slot.

[0011] Optionally, the number of the battery cells is multiple, and the electrical connection assembly includes a mounting plate and multiple busbars arranged on the mounting plate;

[0012] The clamping member includes an elastic clamping member, which is connected to the bus bar. At least a portion of the elastic clamping member extends into the slot and is engaged with the slot. The multiple battery cells are electrically connected via the multiple bus bars.

[0013] Optionally, the elastic clamping member includes an arc-shaped portion, the clamping slot includes an arc-shaped groove matched with the arc-shaped portion, and the arc-shaped portion extends into the arc-shaped groove so that the elastic clamping member and the clamping slot are clamped.

[0014] Optionally, along the insertion direction of the battery cell, two ends of the arc-shaped groove are provided with a first rounded structure;

[0015] Along the insertion direction of the battery cell, two ends of the pole are provided with a second rounded structure.

[0016] Optionally, the shell is provided with a heat exchange channel, and the heat exchange channel surrounds the battery core.

[0017] Optionally, the shell includes a first end plate and a second end plate arranged opposite to each other, and the first end plate is provided with a flow channel inlet and a flow channel outlet communicating with the heat exchange flow channel,

[0018] The heat exchange flow channel extends from the flow channel inlet through the side of the shell to the second end plate, and extends from the second end plate through the bottom of the shell to the flow channel outlet.

[0019] Optionally, the side portion includes side plates and the packaging member that are arranged opposite to each other, the bottom portion includes a bottom plate, and two ends of the side plates, two ends of the packaging member, and two ends of the bottom plate are detachably connected to the first end plate and the second end plate respectively;

[0020] The heat exchange flow channel includes a side plate flow channel located on the side plate, a bottom plate flow channel located on the bottom plate, a first flow channel located on the first end plate, a second flow channel located on the second end plate, and a package flow channel located on the package;

[0021] The side plate flow channel, the packaging component flow channel and the bottom plate flow channel are all plug-connected to the first flow channel and are also plug-connected to the second flow channel, and each plug-in position is provided with a sealing member.

[0022] Optionally, the housing further includes a top plate, the top plate is connected to the side plate, and the top plate is arranged opposite to the bottom plate, and the first end plate, the second end plate, the side plate, the top plate and the bottom plate are connected to form the accommodating cavity;

[0023] The electrical connection assembly is detachably connected to the top plate.

[0024] In the embodiment of the present application, the battery cell is detachably connected to the housing and the electrical connection assembly. After the battery cell is damaged, the packaging can be removed, the damaged battery cell can be taken out, and then a new battery cell can be replaced, so that other components of the battery module can continue to be used without replacing the entire battery module. It can be seen that the battery module provided by the present application can solve the problem in the prior art that the entire battery module needs to be replaced after any battery cell of the battery module is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a battery module provided in an embodiment of the present application;

[0027] Figure 2 An exploded view of a battery module provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of a connection structure of a side panel and a top panel at an angle provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of the connection structure of the side panels and the top panel at another angle provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of the structure of a package provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of the structure of the outer wall of the bottom plate provided in an embodiment of the present application;

[0032] Figure 7 A schematic diagram of the structure of the inner wall of the bottom plate provided in an embodiment of the present application;

[0033] Figure 8 A schematic diagram of the structure of the first end plate provided in an embodiment of the present application;

[0034] Fig. 9 A schematic diagram of the structure of the second end plate provided in an embodiment of the present application;

[0035] Fig.10 A schematic structural diagram of one side surface of an electrical connection assembly provided in an embodiment of the present application;

[0036] Fig.11A schematic diagram of the surface structure of the other side of the electrical connection assembly provided in an embodiment of the present application;

[0037] Fig.12 Schematic diagram of the position structure of the mounting plate, busbar, and elastic clamp provided in the embodiment of the present application ( Fig.12 for Fig.10 Cross-section along the AA direction);

[0038] Fig.13 Schematic diagram of the position structure of the mounting plate, busbar, and elastic clamp provided in the embodiment of the present application ( Fig.13 for Fig.10 A partial view of the cross-sectional view along the BB direction);

[0039] Fig.14 A schematic diagram of the structure of the elastic clip provided in the embodiment of the present application;

[0040] Fig.15 A schematic diagram of the structure of the pole of the battery cell provided in an embodiment of the present application;

[0041] Fig.16 A schematic diagram of the structure of the elastic clamping member and the clamping slot provided in the embodiment of the present application in a clamping state;

[0042] Fig.17 A schematic diagram of the movement direction of the elastic clamp relative to the clamping slot during the installation of the battery cell in the battery module provided in the embodiment of the present application;

[0043] Fig.18 A schematic diagram of the movement direction of the elastic clamp relative to the clamping slot during the process of removing the battery cell in the battery module provided in an embodiment of the present application;

[0044] Fig.19 A schematic diagram of the connection structure of multiple bus bars and multiple battery cells provided in an embodiment of the present application;

[0045] Fig. 20 A schematic diagram of the connection structure of the first end plate, the second end plate and the bottom plate provided in an embodiment of the present application;

[0046] Fig.21 A schematic diagram of the structure of the shell body provided in the embodiment of the present application;

[0047] Fig. 22 A schematic diagram of the movement direction of the battery cells during the installation of the battery cells in the battery module is provided for the embodiment of the present application;

[0048] Fig.23 A schematic diagram of the structure of a battery module without a packaging component installed provided in an embodiment of the present application;

[0049] Fig.24A front view of a battery module provided in an embodiment of the present application.

[0050] exist Figure 1-Figure 24 middle:

[0051] 100, shell body; 110, side plate; 111, side plate flow channel; 1111, fourth inlet; 1112, fourth outlet; 120, bottom plate; 121, slot; 122, bottom plate flow channel; 1221, sixth inlet; 1222, sixth outlet; 130, first end plate; 131, flow channel inlet; 132, flow channel outlet; 133, first flow channel; 1331, first outlet; 1332, second outlet; 134, first inlet; 140, second end plate; 141, second flow channel; 1411, second inlet; 1412, third inlet; 1413, third outlet; 150, top plate; 151, buckle groove;

[0052] 200, package; 210, package flow channel; 211, fifth inlet; 212, fifth outlet;

[0053] 300, battery cell; 310, pole; 311, slot; 3111, first rounded corner structure; 320, second rounded corner structure;

[0054] 400, electrical connection assembly; 410, mounting plate; 420, busbar; 430, elastic clamping member; 431, arc portion; 432, connecting portion; 440, buckle;

[0055] 500. Insulating parts. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] In the prior art, the battery cell and the electrical connection assembly are welded and fixed, and then installed in a shell. The shell is usually composed of multiple plates, and the plates are welded together. Therefore, if any battery cell or any other functional component in the shell is damaged, the entire battery module needs to be replaced.

[0058] like Figure 1-Figure 24 As shown, an embodiment of the present application provides a battery module, which includes a housing, a battery cell 300 and an electrical connection assembly 400 .

[0059] The shell is the installation base of components such as the battery cell 300 and the electrical connection assembly 400. The shell includes a shell body 100 and a packaging member 200. The shell body 100 is provided with a receiving cavity and an opening connected to the receiving cavity. The packaging member 200 is detachably connected to the shell body 100 to block the opening. Optionally, the packaging member 200 and the shell body 100 can be detachably connected by bolt connection or clamping.

[0060] The electrical connection assembly 400 is disposed in the accommodating cavity and connected to the housing.

[0061] The battery cell 300 is disposed in the accommodating cavity. The battery cell 300 is detachably connected to the electrical connection component 400 and is electrically connected to the electrical connection component 400. The battery cell 300 can enter and exit the accommodating cavity through the opening, that is, the battery cell 300 is detachably installed in the accommodating cavity.

[0062] In the embodiment of the present application, the battery cell 300 is detachably connected to the housing and the electrical connection assembly 400. After the battery cell is damaged, the packaging 200 can be removed, the damaged battery cell 300 can be taken out, and then a new battery cell 300 can be replaced, so that other components of the battery module can continue to be used without replacing the entire battery module. It can be seen that the battery module provided by the present application can solve the problem in the prior art that the entire battery module needs to be replaced after any battery cell of the battery module is damaged.

[0063] There can be multiple cells 300, each of which can be detachably connected to the electrical connection assembly 400, and each of which can enter and exit the accommodating cavity from the opening, that is, any two cells 300 are independent of each other, and each of which can be detachably connected to the electrical connection assembly 400 and the housing. In this case, after one or more cells 300 of the cell module are damaged, the damaged cells 300 can be replaced, so that the remaining cells 300 can be reused, reducing maintenance costs.

[0064] In the above solution, the battery cell 300 can enter and exit the accommodating cavity through the opening, that is, the battery cell 300 and the shell are detachably connected. There are various structures for realizing the detachable connection between the battery cell 300 and the shell.

[0065] In an optional embodiment, one end of the battery cell 300 having a pole 310 can abut against the electrical connection component 400, and then abut against the inner wall of the shell, and the remaining outer wall surface of the battery cell 300 can abut against other inner walls of the shell, and the battery cell 300 is clamped by the inner wall of the shell to achieve a detachable connection between the battery cell 300 and the shell. Of course, in the case of a plurality of battery cells 300, the plurality of battery cells 300 can be stacked in sequence along the thickness direction, and the plurality of battery cells 300 as a whole have one end of the pole 310 can abut against the electrical connection component 400, and then abut against the inner wall of the shell, and the remaining outer wall surface of the plurality of battery cells 300 as a whole can abut against other inner walls of the shell, and then the plurality of battery cells 300 are clamped by the inner wall of the shell.

[0066] In another optional embodiment, the shell body 100 may be provided with a slot 121, and the slot 121 may be provided on the bottom plate 120 (see below), and the end of the battery cell 300 away from the pole 310 may be plugged into the slot 121, and the shell body 100 has a first inner wall opposite to the opening, and the extension direction of the slot 121 is consistent with the direction from the opening to the first inner wall. Under this structure, the connection stability between the battery cell 300 and the shell body 100 can be improved. In the case of multiple battery cells 300, the dependence between the battery cells 300 can also be reduced, avoiding the movement and problems of the remaining battery cells 300 in the accommodating cavity when one or more battery cells 300 are removed, and further improving the convenience of disassembly and assembly of the battery cells 300.

[0067] In the above, the battery cell 300 and the electrical connection component 400 are detachably connected, and there are various structures for realizing the detachable connection between the battery cell 300 and the electrical connection component 400. In an optional embodiment, the battery cell 300 can directly abut against the electrical connection component 400 to realize the detachable connection with the electrical connection component 400.

[0068] In another optional embodiment, the battery cell 300 has a pole 310, and one of the electrical connection assembly 400 and the pole 310 may be provided with a clamping member, and the other may be provided with a slot 311, and the clamping member and the slot 311 may be engaged and matched, so that the pole 310 and the electrical connection assembly 400 are detachably connected through the cooperation of the clamping member and the slot 311, and the electrical contact between the pole 310 and the electrical connection assembly 400 is achieved through the cooperation of the clamping member and the slot 311. Optionally, the clamping member may be provided on the electrical connection assembly 400, and the slot 311 may be provided on the pole 310.

[0069] In this case, since the electrical connection component 400 is connected to the shell body 100, the battery cell 300 and the electrical connection component 400 are snap-fitted, therefore, in the process of disassembling and assembling the battery cell 300, the battery cell 300 can be directly pushed or pulled out to snap-fit ​​or release the snap-fit ​​of the battery cell 300 and the electrical connection component 400. In this process, there is no need to move the electrical connection component 400, and the electrical connection component 400 will not hinder the disassembly and assembly of the battery cell 300, making the disassembly and assembly of the battery cell 300 simple and convenient. At the same time, the snap-fit ​​connection between the battery cell 300 and the electrical connection component 400 can also improve the connection stability between the battery cell 300 and the electrical connection component 400.

[0070] Specifically, the electrical connection assembly 400 may include a mounting plate 410 and a plurality of bus bars 420 disposed on the mounting plate 410, the mounting plate 410 is connected to the shell body 100, the snap connector may include an elastic snap connector 430, the elastic snap connector 430 may be connected to the bus bar 420, at least a portion of the elastic snap connector 430 may extend into the slot 311 of the pole 310 to achieve snap-fit ​​with the slot 311, in this way, the pole 310 and the bus bar 420 are snap-fitted by the elastic snap connector 430, the elastic snap connector 430 is a conductive structural component, so as to achieve electrical connection between the pole 310 and the bus bar 420 by the elastic snap connector 430.

[0071] There are multiple battery cells 300, and the multiple battery cells 300 are electrically connected through multiple bus bars 420. For example, the multiple battery cells 300 can be connected in series through multiple bus bars 420. The method of connecting multiple battery cells 300 in series through bus bars 420 is a prior art and will not be described in detail here.

[0072] In this case, the clamping part is elastic and can undergo elastic deformation during the clamping and unclamping process, which facilitates the clamping and unclamping operations of the battery cell 300 and the bus 420. Compared with a clamping part without elasticity, the elasticity of the clamping part can alleviate the problem of the clamping part being squeezed and deformed and unable to recover during the clamping and unclamping process, resulting in clamping failure.

[0073] Optionally, the busbar 420 may be embedded in the mounting plate 410, or fixed to the mounting plate 410 by bonding, or snapped to the mounting plate 410. Optionally, the busbar 420 is mounted on the mounting plate 410, and a first through-hole is provided in the area opposite to the elastic snap-fit ​​member 430, and the elastic snap-fit ​​member 430 has a connecting portion 432, and at least a portion of the connecting portion 432 passes through the first through-hole and is welded and fixed to the busbar 420. Optionally, the mounting plate 410 and the shell body 100 may be connected by snapping, the shell body 100 may be provided with a snap groove 151, and the mounting plate 410 may be provided with a snap 440, and the snap connection between the snap groove 151 and the snap 440 is achieved.

[0074] In a further technical solution, the elastic clamping member 430 may include an arc portion 431, the arc portion 431 is connected to the connecting portion 432, the clamping slot 311 may include an arc groove adapted to the arc portion 431, and the arc portion 431 may extend into the arc groove so that the elastic clamping member 430 and the clamping slot 311 are clamped. In this case, compared with a rectangular or other angular elastic clamping member 430, the coordination between the arc portion 431 of the elastic clamping member 430 and the arc groove makes it easier for the elastic clamping member 430 and the clamping slot 311 to slide in and out.

[0075] In a further technical solution, along the insertion direction of the battery cell 300, the two ends of the arc groove may be provided with a first rounded structure 3111, and along the insertion direction of the battery cell 300, the two ends of the pole 310 may be provided with a second rounded structure 320. Under this structure, the problem of the pole 310 of the battery cell 300 being scratched during the insertion or removal of the battery cell 300 can be alleviated, and the service life of the battery cell 300 is improved.

[0076] The battery module generates heat during operation. If the heat accumulates in the housing, it will have an adverse effect on the functional components (such as the battery cell 300 and the electrical connection assembly 400) in the housing, thus affecting the service life of the battery module.

[0077] To this end, in the embodiment of the present application, the shell may be provided with a heat exchange flow channel, which is formed in the shell wall of the shell, and is used for the circulation of heat exchange medium, and the heat exchange flow channel may be distributed around the battery cell 300. In this case, when the heat exchange medium circulates in the heat exchange flow channel, the heat exchange medium can exchange heat with the battery cell 300. For example, when the heat exchange medium is a liquid cooling medium such as water, the heat exchange medium can take away the heat of the battery cell 300, realize water cooling of the battery cell 300, reduce the temperature of the battery cell 300, and avoid heat accumulation in the shell.

[0078] In other embodiments, the battery module may further include a liquid cooling plate, the liquid cooling plate is provided with a heat exchange channel, and the liquid cooling plate is stacked on the shell.

[0079] Compared with the technical solution of stacking liquid cooling plates on the shell, the technical solution of opening a heat exchange flow channel on the shell in the application embodiment can reduce the use of liquid cooling plates, thereby simplifying the structure of the battery module and reducing the volume of the battery module.

[0080] There are various ways to surround the heat exchange flow channel. In an optional embodiment, the shell may include a first end plate 130 (positive end plate) and a second end plate 140 (negative end plate) that are relatively arranged. The first end plate 130 may be provided with a flow channel inlet 131 connected to the heat exchange flow channel, and the second end plate 140 may be provided with a flow channel outlet 132 connected to the heat exchange flow channel. The heat exchange flow channel may extend from the flow channel inlet 131 through the first side of the shell to the flow channel outlet 132 of the second end plate 140, and the heat exchange flow channel may extend from the flow channel inlet 131 through the second side of the shell to the flow channel outlet 132 of the second end plate 140, and the second side is opposite to the first side.

[0081] In another optional embodiment, the shell may include a first end plate 130 (positive end plate) and a second end plate 140 (negative end plate) that are relatively arranged. The first end plate 130 may be provided with a channel inlet 131 and a channel outlet 132 that are connected to the heat exchange channel. The channel inlet 131 and the channel outlet 132 are used to be connected to an external liquid cooling source to form a heat exchange cycle. The heat exchange channel extends from the channel inlet 131 through the side of the shell to the second end plate 140, and extends from the second end plate 140 through the bottom of the shell to the channel outlet 132.

[0082] In this case, the flow channel inlet 131 and the flow channel outlet 132 are both located on the same side of the shell, which facilitates the connection between the flow channel inlet 131 and the flow channel outlet 132 and an external liquid cooling source.

[0083] Specifically, the side portion may include a side plate 110 and a packaging member 200 that are arranged opposite to each other, and the bottom portion may include a bottom plate 120, and both ends of the side plate 110, both ends of the packaging member 200, and both ends of the bottom plate 120 are respectively detachably connected to the first end plate 130 and the second end plate 140. In other words, both ends of the side plate 110 are respectively detachably connected to the first end plate 130 and the second end plate 140, both ends of the packaging member 200 are respectively detachably connected to the first end plate 130 and the second end plate 140, and both ends of the bottom plate 120 are respectively detachably connected to the first end plate 130 and the second end plate 140.

[0084] Optionally, both ends of the side panel 110, both ends of the packaging component 200, and both ends of the bottom panel 120 can be detachably connected to the first end panel 130 and the second end panel 140 by bolt connection. In this case, connecting the panels by bolts can not only increase the structural strength of the shell, but also eliminate the need for welding, thereby saving process steps, cost, and assembly time.

[0085] The heat exchange flow channel may include a side plate flow channel 111 located on the side plate 110, a bottom plate flow channel 122 located on the bottom plate 120, a first flow channel 133 located on the first end plate 130, a second flow channel 141 located on the second end plate 140, and a package flow channel 210 located on the package 200. The side plate flow channel 111, the package flow channel 210, and the bottom plate flow channel 122 are all plug-connected with the first flow channel 133 and plug-connected with the second flow channel 141, and each plug-in position is provided with a seal, which may be a sealing ring.

[0086] In this case, the shell is composed of multiple plates (side plate 110, bottom plate 120, first end plate 130, second end plate 140 and package 200), and the multiple plates are detachably connected to facilitate the processing of the shell, and the branch channels on each plate (side plate channel 111, bottom plate channel 122, first channel 133, second channel 141 and package channel 210) are plugged together to form a complete heat exchange channel, and a seal is set at the plug-in position of the two plug-in connected branch channels to prevent liquid leakage and improve the reliability of the battery module.

[0087] The first flow channel 133 may include two parts, the first part is connected to the flow channel inlet 131, and the first part has a first outlet 1331 and a second outlet 1332, the first outlet 1331 and the second outlet 1332 are respectively plugged into one end of the side plate flow channel 111 and one end of the package flow channel 210, the second part is connected to the flow channel outlet 132, the second part has a first inlet 134, and the first inlet 134 is plugged into one end of the bottom plate flow channel 122.

[0088] The second channel 141 has a second inlet 1411 , a third inlet 1412 , and a third outlet 1413 . The second inlet 1411 and the third inlet 1412 are respectively plugged with the other end of the side plate channel 111 and the other end of the packaging channel 210 , and the third outlet 1413 is plugged with the other end of the bottom plate channel 122 .

[0089] The first flow channel 133 has a first outlet 1331, which is connected to the flow channel inlet 131. The side plate flow channel 111 may be provided with a fourth inlet 1111 and a fourth outlet 1112. The second flow channel 141 may have a second inlet 1411. The first outlet 1331 and the fourth inlet 1111 are plugged together, and the fourth outlet 1112 and the second inlet 1411 are plugged together, so that the flow channel inlet 131, the first flow channel 133, the side plate flow channel 111, and the second flow channel 141 are connected in sequence.

[0090] The first channel 133 has a second outlet 1332, which is connected to the channel inlet 131. The package channel 210 may have a fifth inlet 211 and a fifth outlet 212. The second channel 141 may be provided with a third inlet 1412. The second outlet 1332 and the fifth inlet 211 are plugged together, and the fifth outlet 212 and the third inlet 1412 are plugged together, so that the channel inlet 131, the first channel 133, the package channel 210, and the second channel 141 are connected in sequence.

[0091] Thus, the heat exchange channel extends from the first end plate 130 to the second end plate 140 via the side plate 110 , and the heat exchange channel extends from the first end plate 130 to the second end plate 140 via the packaging component 200 .

[0092] The second flow channel 141 has a third outlet 1413, the bottom plate flow channel 122 has a sixth inlet 1221 and a sixth outlet 1222, the first flow channel 133 has a first inlet 134, the first inlet 134 and the flow channel outlet 132 are connected, the third outlet 1413 is plugged with the sixth inlet 1221, and the sixth outlet 1222 is plugged with the first inlet 134, so that the second flow channel 141, the bottom plate flow channel 122, and the flow channel outlet 132 are connected in sequence.

[0093] Thus, the heat exchange channel extends from the second end plate 140 through the bottom plate 120 to the channel outlet 132 .

[0094] In the above, the shell includes a side plate 110, a bottom plate 120, a first end plate 130, a second end plate 140 and a package 200. In order to form a closed shell, the shell may also include a top plate 150. The top plate 150 may be connected to the side plate 110, and the top plate 150 may be arranged opposite to the bottom plate 120. The first end plate 130, the second end plate 140, the side plate 110, the top plate 150 and the bottom plate 120 are connected to form a accommodating cavity. The first end plate 130, the second end plate 140, the side plate 110, the package 200, the top plate 150 and the bottom plate 120 are connected to form a shell.

[0095] The electrical connection assembly 400 can be detachably connected to the top plate 150 , and an insulating member 500 is provided between the electrical connection assembly 400 and the top plate 150 , so that an insulating member 500 is provided between the electrical connection assembly 400 and the shell, and the insulating member 500 serves to insulate the bus 420 and the top plate 150 .

[0096] In this case, the electrical connection assembly 400 is detachably connected to the top plate 150 without a heat exchange channel, so as to avoid the heat exchange fluid from affecting the electrical connection assembly 400 when the heat exchange fluid flows in the heat exchange channel.

[0097] Optionally, the insulating member 500 may be an insulating pad, which is stacked between the electrical connection assembly 400 and the top plate 150. The insulating pad may be connected to the top plate 150 by bonding with an adhesive (e.g., adhesive backing), or the insulating pad may be clamped between the electrical connection assembly 400 and the top plate 150. The insulating pad is provided with a second through hole for the buckle 440 to pass through.

[0098] Optionally, the top plate 150 and the side plate 110 may be an integrated structure.

[0099] When assembling the battery module, the first end plate 130 and the second end plate 140 can be first fixedly assembled with the bottom plate 120 by bolts. After assembly, the first flow channel 133, the second flow channel 141 and the bottom plate flow channel 122 are plugged and connected, and then the top plate 150 is fixedly assembled with the first end plate 130 and the second end plate 140 by bolts, and the side plate 110 is fixedly assembled with the first end plate 130, the second end plate 140 and the bottom plate 120 by bolts. After assembly, the side plate flow channel 111 is plugged and connected with the first flow channel 133 and the second flow channel 141, and then the battery cell 300 is inserted into the accommodating cavity along the slot 121. During this process, the elastic clip 430 moves and squeezes and deforms along the slot 311 of the pole 310 until the two are completely snapped together. After all the battery cells 300 are inserted into the corresponding slots 121, the package 200 is fixedly assembled with the first end plate 130 and the second end plate 140 by bolts to complete the assembly of the battery module.

[0100] When the battery module needs to be disassembled, the bolts between the packaging member 200 and the shell body 100 are first removed, and the battery cell 300 is pulled out. When pulling out and inserting, the rounded corner portion of the slot 311 of the pole 310 provides partial sliding and spring compression space.

[0101] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0102] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0103] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0104] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0105] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0106] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A battery module, characterized in that: It comprises a housing, a battery cell (300) and an electrical connection assembly (400): The shell comprises a shell body (100) and a packaging member (200), the shell body (100) being provided with a receiving cavity and an opening communicating with the receiving cavity, and the packaging member (200) being detachably connected to the shell body (100) to seal the opening; The electrical connection assembly (400) is arranged in the accommodating cavity and connected to the housing; The battery core (300) is disposed in the accommodating cavity, the battery core (300) is detachably connected to the electrical connection component (400) and is electrically connected to the electrical connection component (400), and the battery core (300) can enter and exit the accommodating cavity through the opening.

2. The battery module according to claim 1, characterized in that: The shell body (100) is provided with a slot (121), the battery cell (300) is plugged into and matched with the slot (121), the shell body (100) has a first inner wall opposite to the opening, and the extension direction of the slot (121) is consistent with the direction from the opening to the first inner wall.

3. The battery module according to claim 2, characterized in that: The battery cell (300) has a pole (310); one of the electrical connection assembly (400) and the pole (310) is provided with a clamping piece, and the other is provided with a slot (311); the clamping piece and the slot (311) are engaged in a clamping fit; the pole (310) and the electrical connection assembly (400) achieve electrical contact through the fit between the clamping piece and the slot (311).

4. The battery module according to claim 3, characterized in that: The number of the battery cells (300) is plural, and the electrical connection assembly (400) comprises a mounting plate (410) and a plurality of busbars (420) arranged on the mounting plate (410); The clamping member comprises an elastic clamping member (430), the elastic clamping member (430) is connected to the bus bar (420), at least part of the elastic clamping member (430) extends into the clamping slot (311) and is clamped and matched with the clamping slot (311), so that the plurality of battery cells (300) are electrically connected via the plurality of bus bars (420).

5. The battery module according to claim 4, characterized in that: The elastic clamping member (430) comprises an arc-shaped portion (431), the clamping slot (311) comprises an arc-shaped groove matched with the arc-shaped portion (431), and the arc-shaped portion (431) extends into the arc-shaped groove so that the elastic clamping member (430) and the clamping slot (311) are clamped.

6. The battery module according to claim 5, characterized in that: Along the insertion direction of the battery cell (300), two ends of the arc-shaped groove are provided with a first rounded corner structure (3111); Along the insertion direction of the battery cell (300), two ends of the pole (310) are provided with second rounded corner structures (320).

7. The battery module according to claim 1, characterized in that: The shell is provided with a heat exchange channel, and the heat exchange channel surrounds the battery core (300).

8. The battery module according to claim 7, characterized in that: The shell comprises a first end plate (130) and a second end plate (140) which are arranged opposite to each other, and the first end plate (130) is provided with a flow channel inlet (131) and a flow channel outlet (132) which are in communication with the heat exchange flow channel. The heat exchange channel extends from the channel inlet (131) through the side of the shell to the second end plate (140), and extends from the second end plate (140) through the bottom of the shell to the channel outlet (132).

9. The battery module according to claim 8, characterized in that: The side portion comprises a side plate (110) and the packaging member (200) which are arranged opposite to each other, and the bottom portion comprises a bottom plate (120), and two ends of the side plate (110), two ends of the packaging member (200), and two ends of the bottom plate (120) are respectively detachably connected to the first end plate (130) and the second end plate (140); The heat exchange flow channel comprises a side plate flow channel (111) located on the side plate (110), a bottom plate flow channel (122) located on the bottom plate (120), a first flow channel (133) located on the first end plate (130), a second flow channel (141) located on the second end plate (140), and a package flow channel (210) located on the package (200); The side plate flow channel (111), the packaging component flow channel (210) and the bottom plate flow channel (122) are all plug-connected to the first flow channel (133) and are also plug-connected to the second flow channel (141), and each plug-in position is provided with a sealing member.

10. The battery module according to claim 9, characterized in that: The housing further comprises a top plate (150), the top plate (150) being connected to the side plate (110), and the top plate (150) being arranged opposite to the bottom plate (120), and the first end plate (130), the second end plate (140), the side plate (110), the top plate (150) and the bottom plate (120) being connected to form the accommodating cavity; The electrical connection assembly (400) is detachably connected to the top plate (150).

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