Battery pack assembly equipment, battery pack assembly method and battery pack

Abstract

The present application discloses a battery pack assembly device, a battery pack assembly method and a battery pack, belonging to the field of battery technology. The battery pack assembly device includes a base and at least two positioning mechanisms arranged on the base, at least two positioning mechanisms are arranged oppositely and spaced along a first direction; the positioning mechanism includes a support member and a plurality of limit assemblies, the support member is connected to the base; a plurality of limit assemblies are arranged on the support member along a second direction, and the second direction intersects with the first direction; along the first direction, a plurality of limit assemblies of each positioning mechanism correspond to a plurality of limit assemblies of the relatively arranged positioning mechanism, and at least one of the two limit assemblies at the corresponding positions is configured to be able to move toward another limit assemblies, so as to support and limit a plurality of single cells between the two limit assemblies at the corresponding positions. The present application can improve production efficiency by setting a slider to position the single cell, instead of a structural member to support the single cell.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to a battery pack assembly device, a battery pack assembly method and a battery pack. Background Art

[0002] In order to limit and support the cylindrical batteries in a battery pack composed of cylindrical batteries, structural members are set in the gaps between adjacent cylindrical batteries to limit and support the cylindrical batteries.

[0003] In the current technology, when multiple cylindrical batteries are assembled into a module, structural parts need to be placed between the cylindrical batteries to limit and support the cylindrical batteries and facilitate the assembly of the module. However, due to the need to add additional structural parts, the processing technology of the battery pack is complicated and the production efficiency cannot meet the current needs. Summary of the invention

[0004] Purpose of the invention: The present application provides a battery pack assembly device to solve the technical problems of complex battery pack processing technology and insufficient production efficiency; another purpose of the present application is to provide a battery pack processing method; yet another purpose provided by the present application is to provide a battery pack.

[0005] Technical solution: This application provides a battery pack assembly device, including:

[0006] A base and at least two positioning mechanisms arranged on the base, wherein the at least two positioning mechanisms are arranged opposite to each other and spaced apart along a first direction; the positioning mechanisms include:

[0007] A support member connected to the base;

[0008] A plurality of limiting components, wherein the plurality of limiting components are arranged on the support member along a second direction, and the second direction intersects with the first direction;

[0009] Along the first direction, the plurality of limit assemblies of each positioning mechanism correspond to the plurality of limit assemblies of the positioning mechanism arranged opposite to each other, and at least one of the two limit assemblies at corresponding positions is configured to be able to move toward the other limit assemblies.

[0010] Among them, the limiting assembly includes a plurality of sliders arranged along a third direction, the plurality of sliders of each limiting assembly correspond to the plurality of sliders of the corresponding limiting assembly, the sliders are passed through the supporting member, and the corresponding sliders are configured to be able to move toward each other along the first direction, so that the two limiting assemblies at corresponding positions can move toward each other, so as to support and limit a plurality of single cells between the two limiting assemblies at corresponding positions, and the first direction, the second direction and the third direction intersect.

[0011] In some embodiments, the slider has a guide surface, the guide surface is located on a side of the slider facing the slider corresponding thereto, and the guide surface is used to contact the single battery to guide the slider to move along the first direction.

[0012] In some embodiments, the limiting assembly further includes a stopper, the stopper is sleeved on a side of the slider facing the slider corresponding thereto, and the stopper is configured to limit the single cell along a first direction.

[0013] In some embodiments, the limiting assembly further includes a connecting portion, and the plurality of sliders are connected to the connecting portion.

[0014] In some embodiments, in the two positioning mechanisms disposed opposite to each other, the connecting portion in one of the positioning mechanisms is located on a side of the support member away from the other positioning mechanism.

[0015] In some embodiments, of two adjacent limiting assemblies along the second direction, at least a portion of an orthographic projection of the slider of one of the two limiting assemblies along the second direction is located outside an orthographic projection of any slider of the other limiting assemblies.

[0016] Accordingly, the present application also provides a battery pack assembly method, comprising the following steps:

[0017] Move and place multiple single cells in two corresponding position limiting components to form a battery layer;

[0018] Laying a connection layer on the battery layer;

[0019] Moving toward each other and placing a plurality of single cells on two limiting assemblies adjacent to the battery layer along the second direction to form another battery layer;

[0020] Each of the limiting components moves away from the relatively arranged limiting components.

[0021] In some embodiments, before moving and placing a plurality of single cells toward each other on two of the limiting assemblies adjacent to the battery layer along the second direction to form the other battery layer, the following steps are also included:

[0022] placing a cooling plate on the connecting layer;

[0023] Another connecting layer is laid on the cooling plate.

[0024] Correspondingly, the present application also provides a battery pack, which is processed by the battery pack assembly equipment in the above embodiment, or the battery pack is processed by the battery pack assembly method in the above embodiment.

[0025] Beneficial effects: Compared with the prior art, the battery pack assembly equipment provided by the embodiment of the present application includes a base and at least two positioning mechanisms arranged on the base, and the at least two positioning mechanisms are arranged oppositely and spaced along a first direction; the positioning mechanism includes a support member and a plurality of limit assemblies, and the support member is connected to the base; the plurality of limit assemblies are arranged on the support member along a second direction, and the second direction intersects with the first direction; along the first direction, the plurality of limit assemblies of each positioning mechanism correspond to the positions of the plurality of limit assemblies of the relatively arranged positioning mechanism, and at least one of the two limit assemblies at the corresponding positions is configured to be able to move toward the other limit assemblies, so as to support and limit a plurality of single cells between the two limit assemblies at the corresponding positions. The present application avoids the use of structural members to limit and support the single cells by setting a slider to position the single cells, which can reduce the process steps in the production of battery packs and improve the production efficiency of battery packs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0027] Figure 1 A schematic diagram of the structure of a battery pack assembly device provided in an embodiment of the present application;

[0028] Figure 2 A schematic structural diagram of a battery pack assembly device from another angle provided in an embodiment of the present application;

[0029] Figure 3 for Figure 3 Detailed view of the center circle A;

[0030] Figure 4 A schematic diagram of the structure of a limit assembly in a battery pack assembly device provided in an embodiment of the present application;

[0031] Figure 5 for Figure 4 Detailed view of the center circle B;

[0032] Figure 6 A schematic diagram of the structure of the battery pack assembly equipment in the second step provided in an embodiment of the present application;

[0033] Figure 7 A schematic diagram of the structure of the battery pack assembly equipment provided in the embodiment of the present application in the third step;

[0034] Figure 8 A schematic diagram of the structure of the battery pack assembly equipment provided in the fourth step of the embodiment of the present application;

[0035] Fig. 9 A schematic diagram of the structure of the battery pack assembly equipment provided in the embodiment of the present application in the fifth step;

[0036] Fig.10 A schematic diagram of the structure of the battery pack assembly equipment provided in the embodiment of the present application in the sixth step;

[0037] Fig.11 A schematic diagram of the structure of the battery pack assembly equipment provided in the embodiment of the present application in the seventh step;

[0038] Fig.12 A schematic diagram of the structure of the battery pack assembly equipment provided in the embodiment of the present application in the eighth step;

[0039] Fig.13 A schematic diagram of the structure of the battery pack assembly equipment provided in the embodiment of the present application in the ninth step;

[0040] Fig.14 A schematic diagram of the structure of the battery pack assembly equipment provided in an embodiment of the present application in the tenth step;

[0041] Fig.15 A schematic diagram of the structure of a battery pack provided in an embodiment of the present application;

[0042] Fig.16 A schematic diagram of the structure of a battery module provided in an embodiment of the present application;

[0043] Fig.17 A front view of a battery pack provided in an embodiment of the present application;

[0044] Fig.18 for Fig.17 Detail of point C in the center circle.

[0045] Figure markings, 1-base, 2-positioning mechanism, 21-support, 22-limiting assembly, 221-slider, 222-guide surface, 223-limiting surface, 224-block, 23-connecting part, 3-battery module, 31-battery pack, 311-single cell, 312-structural adhesive, 313-cooling plate, 32-wiring harness board assembly, 33-housing. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0047] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0048] It should also be noted that in the drawings of the embodiments of the present application, arrows marked with X, Y, and Z respectively represent the first direction X, the second direction Y, and the third direction Z. The description of the present application introduces the first direction X, the second direction Y, and the third direction Z in order to more clearly express the relative position relationship involved in the detection method, wherein the first direction X, the second direction Y, and the third direction Z are three relative directions that intersect with each other, rather than absolute directions. In actual applications, the first direction X, the second direction Y, and the third direction Z can point to any direction in space as long as the intersection relationship between the three is maintained.

[0049] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0050] In order to limit and support the cylindrical batteries in the battery pack 31 composed of cylindrical batteries, structural members are set in the gaps between adjacent cylindrical batteries to limit and support the cylindrical batteries.

[0051] In the current technology, it is necessary to place structural parts between cylindrical batteries when assembling multiple cylindrical batteries into a module to limit and support the cylindrical batteries and facilitate the assembly of the module. However, due to the need to add additional structural parts, the processing technology of the battery pack 31 is complicated and the production efficiency cannot meet the current needs.

[0052] In order to solve the technical problem that the battery pack 31 has a complex processing technology and low production efficiency, the first embodiment of the present application provides a battery pack assembly device. Figure 1 , Figure 1 A schematic structural diagram of a battery pack 31 assembly device provided in an embodiment of the present application, the battery pack assembly device includes a base 1 and at least two positioning mechanisms 2 arranged on the base 1, the at least two positioning mechanisms 2 are arranged opposite to each other and spaced apart along a first direction X; the positioning mechanism 2 includes a support member 21 and a plurality of limit assemblies 22, the support member 21 is connected to the base 1; the plurality of limit assemblies 22 are arranged on the support member 21 along a second direction Y, and the second direction Y intersects with the first direction X; along the first direction X, the plurality of limit assemblies 22 of each positioning mechanism 2 correspond to the plurality of limit assemblies 22 of the relatively arranged positioning mechanism 2, and of the two corresponding limit assemblies 22, at least one limit assemblies 22 is configured to be able to move toward the other limit assemblies 22, so as to support and limit the plurality of single cells 311 between the two corresponding limit assemblies 22.

[0053] It should be noted that, in some embodiments of the present application, the single cell 311 is a cylindrical battery; in other embodiments of the present application, the single cell 311 may also be a square battery.

[0054] The two corresponding limiting components 22 can limit and support the single battery 311 from the bottom of both ends of the single battery 311. The two positioning structures with multiple limiting components 22 and arranged oppositely can limit and support the multi-layer single battery 311.

[0055] Specifically, the positioning structures relatively arranged along the first direction X can limit the single battery 311 , and the single battery 311 extends along the first direction X.

[0056] Furthermore, the second direction Y may be a direction perpendicular to the horizontal plane, so that the multiple layers of single batteries 311 are arranged along the height direction.

[0057] In the first embodiment, the present application sets a slider 221 to temporarily limit the single battery 311 during the processing of the battery pack 31, thereby avoiding the installation of structural parts to support and limit the single battery 311 during the processing of the battery pack 31, reducing the processing steps of installing the structural parts, making the processing technology of the battery pack 31 simpler and the production efficiency of the battery pack 31 higher.

[0058] In some embodiments, please refer again to Figure 1 , and see Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 2 This is a schematic structural diagram of the battery pack 31 assembly device provided in an embodiment of the present application from another angle. Figure 3 for Figure 3 Detailed view of the center circle A. Figure 4 This is a schematic diagram of the structure of the limiting assembly 22 in the battery pack 31 assembly device provided in an embodiment of the present application. Figure 5 for Figure 4 In the detailed view at the middle circle B, the limit assembly 22 includes a plurality of sliders 221 arranged along the third direction Z, the plurality of sliders 221 of each limit assembly 22 correspond to the plurality of sliders 221 of the corresponding limit assembly 22, the sliders 221 are passed through the support member 21, and the corresponding sliders 221 are configured to be able to move toward each other along the first direction X, so that two corresponding limit assemblies 22 in position can move toward each other, and the first direction X, the second direction Y and the third direction Z intersect.

[0059] Specifically, two adjacent sliders 221 along the third direction Z are used to limit and support the same single battery 311 .

[0060] In some embodiments, the slider 221 is a cylindrical shaft, and a through hole extending along the first direction X is provided on the support member 21 , and the cylindrical shaft passes through the through hole and can move along the through hole.

[0061] In the above embodiment, a plurality of sliders 221 are arranged along the third direction Z to limit and support a plurality of single cells 311. In this embodiment, the sliders 221 play a role in supporting and limiting the single cells 311. After the installation is completed, the sliders 221 can be pulled out along the first direction X to achieve the reuse of the sliders 221.

[0062] In some embodiments, please refer again to Figure 3 and Figure 5 The slider 221 has a guide surface 222, which is located on a side of the slider 221 facing the corresponding slider 221, and the guide surface 222 is used to contact the single battery 311 to guide the slider 221 to move along the first direction X.

[0063] It is understandable that the length of the portion of the slider 221 supported by the support member 21 is smaller than the length of the slider 221. The slider 221 may be offset during the movement along the first direction X, causing the end of the slider 221 to interfere with the single battery 311, resulting in the slider 221 being unable to move further along the first direction X.

[0064] In some embodiments, the guide surface 222 is a conical surface.

[0065] In the above implementation, by providing the guide surface 222, after the slider 221 interferes with the single battery 311, under the action of the guide surface 222, the slider 221 moves away from the single battery 311 along the second direction Y, so that the slider 221 can continue to move along the first direction X, thereby avoiding the problem that the slider 221 cannot continue to move along the first direction X due to the deviation of the slider 221 during the movement and the interference with the single battery 311.

[0066] In some embodiments, the slider 221 further has a limiting surface 223 , and the limiting surface 223 is located at one end of the slider 221 facing the corresponding slider 221 . In other embodiments, the guide surface 222 is disposed around the limiting surface 223 .

[0067] In the above embodiment, the limiting surface 223 is used to abut against the cooling plate 313 to limit the cooling plate 313 along the first direction X to prevent the cooling plate 313 from deviating during the manufacturing process of the battery pack 31 .

[0068] In some embodiments, please refer again to Figure 3 and 5 The limiting assembly 22 further includes a stopper 224, which is sleeved on a side of the slider 221 facing the corresponding slider 221, and the stopper 224 is configured to limit the single battery 311 along the first direction X.

[0069] In the above embodiment, the stopper 224 is used to abut against the single battery 311, and the stopper 224 in the corresponding limiting assembly 22 can clamp the single battery 311 to limit the position of the single battery 311 in the first direction X. In addition, the stopper 224 also limits the slider 221 to prevent the slider 221 from moving too much in the first direction X so that the slider 221 is separated from the support member 21.

[0070] In some embodiments, please refer again to Figure 1-Figure 5 The limiting assembly 22 also includes a connecting portion 23 , and a plurality of sliders 221 are connected to the connecting portion 23 .

[0071] It is understandable that, since the battery pack 31 has multiple single batteries 311, in the above embodiment, the same limiting assembly 22 includes multiple sliders 221 to simultaneously limit the multiple single batteries 311. However, it is cumbersome to move the sliders 221 in the same limiting assembly 22 one by one.

[0072] In the above embodiment, by providing the connection part 23 to connect all the sliders 221 in the same limit assembly 22, all the sliders 221 in the same limit assembly 22 can be moved with only one action, thereby improving production efficiency. In addition, the connection part 23 can also play a role in limiting, which can prevent the slider 221 from moving too much along the first direction X so that the slider 221 is separated from the support member 21.

[0073] At least one of the stopper 224 and the connecting portion 23 is detachably connected to the slider 221 , so as to facilitate installation of the limiting assembly 22 on the supporting member 21 .

[0074] In some embodiments, please refer again to Figure 1 In the two positioning mechanisms 2 arranged opposite to each other, the connecting portion 23 in one positioning mechanism 2 is located on a side of the support member 21 away from the other positioning mechanism 2 .

[0075] In the above embodiment, during the processing of the battery pack 31, components such as the single battery 311 and the cooling plate 313 are disposed between the oppositely disposed support members 21. Disposing the connecting portion 23 outside the two oppositely disposed support members 21 can avoid interference between the connecting portion 23 and the components disposed between the oppositely disposed support members 21. In addition, disposing the connecting portion 23 outside the two oppositely disposed support members 21 can also facilitate pushing or pulling the limit mechanism.

[0076] In some other embodiments, in two positioning mechanisms 2 disposed opposite to each other, the connecting portion 23 in one positioning mechanism 2 is located on a side of the support member 21 close to the other positioning mechanism 2 .

[0077] In some embodiments, please refer again to Figure 1 and Figure 2 In two adjacent limiting components 22 along the second direction Y, at least a portion of the orthographic projection of the slider 221 of one along the second direction Y is located outside the orthographic projection of any slider 221 of the other along the second direction.

[0078] Specifically, a plane α perpendicular to the second direction Y is selected, and the plane α is located on the same side of two adjacent limiting components 22 along the second direction Y. Among the two adjacent limiting components 22 along the second direction Y, the orthographic projection of any slider 221 in one limiting component 22 along the second direction Y on the plane α is the first orthographic projection, and the orthographic projection of any slider 221 in the other limiting component 22 along the second direction Y on the plane α is the second orthographic projection, and at least part of the first orthographic projection is located outside the second orthographic projection, that is, there are two situations: 1. The first orthographic projection does not overlap with any second orthographic projection at all; 2. Part of the first orthographic projection overlaps with part of a second orthographic projection.

[0079] That is, in two adjacent limiting components 22 along the second direction Y, the distance between any slider 221 in one limiting component 22 and any slider 221 in the other limiting component 22 along the third direction Z is greater than 0.

[0080] In the above embodiment, the sliders 221 in the two adjacent limiting assemblies 22 along the second direction Y are arranged in a staggered manner so that the single cells 311 in two adjacent layers can be arranged in a staggered manner. Fig.15 , Fig.15 This is a schematic diagram of the structure of the battery cell block 6 in the battery pack 31 provided in an embodiment of the present application, so that the gaps between the single batteries 311 are smaller and the space utilization rate of the battery pack 31 is higher.

[0081] Furthermore, in some embodiments, in two adjacent limiting assemblies 22 along the second direction Y, the distance between two adjacent sliders 221 in one limiting assembly 22 and a slider 221 in another limiting assembly 22 along the third direction Z is equal. This allows some of the single cells 311 in one battery layer to be in the grooves formed by adjacent single cells 311 in adjacent battery layers, thereby further reducing the gaps between the single cells 311 and further improving the space utilization of the battery pack.

[0082] In some embodiments, the base 1 is located at the bottom, and the positioning mechanism 2 is located above the base 1 .

[0083] Specifically, taking a cell block 6 having four battery layers and two cooling plates 313 as an example, the operation flow of the battery pack assembly equipment is as follows:

[0084] Please refer again Figure 1 , move the first layer of limiting components 22 toward each other to shorten the distance between the first layer of limiting components 22, so that the distance between the first layer of limiting components 22 is smaller than the length of the single battery 311;

[0085] See also Figure 6 , laying a plurality of single cells 311 on the first layer of the limiting assembly 22 to form a battery layer, wherein the battery layer located above the first layer of the limiting assembly 22 is the first battery layer;

[0086] See also Figure 7 , laying structural adhesive 312 on the first battery layer to form a connecting layer, the connecting layer located on the first battery layer is the first connecting layer, and the adhesive strip of the structural adhesive 312 used to form the first connecting layer can be one or more;

[0087] See also Figure 8 , laying a cooling plate 313 on the first connection layer to form a first cooling layer;

[0088] See also Fig. 9, laying structural adhesive 312 on the first cooling layer to form a connecting layer, the connecting layer located on the first cooling layer is the second connecting layer, the adhesive strip of the structural adhesive 312 used to form the second connecting layer can be one or more, and the second layer of limiting components 22 are moved toward each other to shorten the spacing between the second layer of limiting components 22, so that the spacing between the second layer of limiting components 22 is smaller than the length of the single battery 311;

[0089] See also Fig.10 , laying a plurality of single cells 311 on top of the second layer of limiting components 22 to form a battery layer, wherein the battery layer above the second layer of limiting components 22 is a second battery layer;

[0090] See also Fig.11 , laying structural adhesive 312 on the second battery layer to form a connection layer, the connection layer located on the second battery layer is the third connection layer, and the adhesive strip of the structural adhesive 312 used to form the third connection layer can be one or more;

[0091] See also Fig.12 , move the third-layer limiting components 22 toward each other to shorten the spacing between the third-layer limiting components 22, so that the spacing between the third-layer limiting components 22 is smaller than the length of the single battery 311, and lay a plurality of single batteries 311 above the third-layer limiting components 22 to form a battery layer, and the battery layer above the third-layer limiting components 22 is the third battery layer;

[0092] See also Fig.13 , laying structural adhesive 312 on the third battery layer to form a connection layer, the connection layer located on the third battery layer is the fourth connection layer, and the adhesive strip of the structural adhesive 312 used to form the fourth connection layer can be one or more;

[0093] See also Fig.14 , a cooling plate 313 is laid on the fourth connection layer to form a second cooling layer; a structural adhesive 312 is laid on the second cooling layer to form a connection layer, the connection layer located on the second cooling layer is the fifth connection layer, and the adhesive strips of the structural adhesive 312 used to form the fifth connection layer can be one or more; the fourth layer of limiting components 22 are moved toward each other to shorten the spacing between the fourth layer of limiting components 22, so that the spacing between the fourth layer of limiting components 22 is smaller than the length of the single battery 311, and a plurality of single batteries 311 are laid above the fourth layer of limiting components 22 to form a battery layer, and the battery layer located above the fourth limiting component 22 is the fourth battery layer;

[0094] If the structural adhesive 312 has not solidified, wait for the structural adhesive 312 to solidify;

[0095] All the limiting components 22 are moved in opposite directions, and the battery core block 6 is taken out. The production of the battery core block 6 is completed.

[0096] In the above process, the distances between the first-layer limiting assembly 22 , the second-layer limiting assembly 22 , the third-layer limiting assembly 22 , and the fourth-layer limiting assembly 22 and the base 1 along the second direction Y are sequentially from near to far.

[0097] Furthermore, in order to improve the heat exchange efficiency between the single battery 311 and the cooling plate 313 , the structural adhesive 312 may be a thermally conductive structural adhesive.

[0098] Accordingly, the present application also provides a battery pack assembly method, comprising the following steps: moving and placing multiple single cells 311 on two corresponding position limiting components 22 to form a battery layer; laying structural adhesive 312 on the battery layer to form a connection layer; moving and placing multiple single cells 311 on two position limiting components 22 adjacent to the battery layer along the second direction Y to form another battery layer. The other battery layer is located on the side of the connection layer away from the battery layer along the second direction Y.

[0099] In the above embodiment, a plurality of single cells 311 can be connected into a battery layer through the structural adhesive 312 , and adjacent battery layers can also be connected.

[0100] In some embodiments, before moving and placing multiple single cells 311 on two stopper assemblies 22 adjacent to the battery layer along the second direction Y to form another battery layer, the following steps are also included: placing a cooling plate 313 on the connection layer; laying structural adhesive 312 on the cooling plate 313 to form another connection layer. The other connection layer is located on the side of the cooling plate 313 away from the connection layer along the second direction Y.

[0101] In the above embodiment, the cooling plate 313 can be arranged between adjacent battery layers, and the cooling plate 313 and the adjacent battery layers are connected via a connecting layer.

[0102] In some other embodiments, the cooling plate 313 is further included in contact with the limiting surface 223 of a portion of the sliding block 221 to limit the cooling plate 313 in the first direction X.

[0103] In other embodiments, it also includes: moving each limit component 22 away from the relatively arranged limit component 22 to slide the slider 221 in the limit component 22 out of the battery pack 31, releasing the limit on the battery pack 31 along the second direction Y, so that the assembled battery pack 31 can be taken out of the battery pack assembly equipment.

[0104] Accordingly, the present application also provides a battery pack 31, see Fig.16 , Fig.17 and Fig.18 , Fig.16 A schematic diagram of the structure of a battery pack 31 provided in an embodiment of the present application, Fig.17 A front view of a battery pack provided in an embodiment of the present application, Fig.18 for Fig.17 In the detailed view at the center circle C, the battery pack 31 is processed by the battery pack assembly equipment in the above embodiment, or the battery pack 31 is processed by the battery pack assembly method in the above embodiment.

[0105] The single cells 311 in the battery pack 31 provided in the present application are connected only by a connecting layer, and no additional supporting parts are used to support the single cells 311, so that the battery pack 31 is more compact, the types of parts are reduced, the production is more convenient, and the space utilization rate of the battery module 3 is higher.

[0106] Correspondingly, the present application also provides a battery module 3, including the battery pack 31, the wiring harness plate assembly 32 and the shell 33 in the above embodiment, the wiring harness plate assembly 32 and the shell 33 are connected to form a chamber, the battery pack 31 is arranged in the chamber, the battery pack 31 includes a plurality of single cells 311, at least one cooling plate 313 and structural adhesive 312, the plurality of single cells 311 form a plurality of battery layers, the cooling plate 313 is arranged between at least two battery layers, the structural adhesive 312 is arranged between the battery layers, or the structural adhesive 312 is arranged between the cooling plate 313 and the battery layer.

[0107] The above is a detailed introduction to a battery pack assembly device, a battery pack assembly method and a battery pack 31 provided in the embodiments of the present application. Specific examples are used in the present application to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack assembly device, characterized in that: include: A base and at least two positioning mechanisms disposed on the base, wherein the at least two positioning mechanisms are disposed opposite to each other and spaced apart along a first direction; The positioning mechanism comprises: A support member connected to the base; A plurality of limiting components, wherein the plurality of limiting components are arranged on the support member along a second direction, and the second direction intersects with the first direction; Along the first direction, the plurality of limit assemblies of each positioning mechanism correspond to the plurality of limit assemblies of the positioning mechanism arranged oppositely, and at least one of the two limit assemblies at corresponding positions is configured to be able to move toward the other limit assemblies; Among them, the limiting assembly includes a plurality of sliders arranged along a third direction, the plurality of sliders of each limiting assembly correspond to the plurality of sliders of the corresponding limiting assembly, the sliders are passed through the supporting member, and the corresponding sliders are configured to be able to move toward each other along the first direction, so that the two limiting assemblies at corresponding positions can move toward each other, so as to support and limit a plurality of single cells between the two limiting assemblies at corresponding positions, and the first direction, the second direction and the third direction intersect.

2. The battery pack assembly equipment according to claim 1, characterized in that: The slider has a guide surface, which is located on a side of the slider facing the slider corresponding thereto, and is used to contact the single battery to guide the slider to move along the first direction.

3. The battery pack assembly equipment according to claim 1, characterized in that: The limiting assembly further includes a stopper, which is sleeved on a side of the slider facing the corresponding slider, and is configured to limit the single battery along a first direction.

4. The battery pack assembly equipment according to claim 1, characterized in that: The limiting assembly also includes a connecting portion, and the plurality of sliding blocks are connected to the connecting portion.

5. The battery pack assembly equipment according to claim 4, characterized in that: In the two positioning mechanisms arranged opposite to each other, the connecting portion in one of the positioning mechanisms is located on a side of the supporting member away from the other positioning mechanism.

6. The battery pack assembly equipment according to claim 1, characterized in that: Along the second direction, among two adjacent limiting assemblies, at least a portion of an orthographic projection of the slider of one of them along the second direction is located outside an orthographic projection of any slider of the other one.

7. A battery pack assembly method, characterized in that: The following steps are involved: Move and place multiple single cells in two corresponding position limiting components to form a battery layer; Laying a connection layer on the battery layer; A plurality of single cells are moved toward each other and placed on two limiting assemblies adjacent to the battery layer along the second direction to form another battery layer.

8. A battery pack assembly method according to claim 7, characterized in that: Before moving toward each other and placing a plurality of single cells on two of the limiting assemblies adjacent to the battery layer along the second direction to form the other battery layer, the following steps are also included: placing a cooling plate on the connection layer; Another connecting layer is laid on the cooling plate.

9. A battery pack, characterized in that: The battery pack is processed by the battery pack assembly equipment described in any one of claims 1 to 6, or the battery pack is processed by the battery pack assembly method described in any one of claims 7 to 8.

Images