Battery module and battery module

Abstract

The application relates to the technical field of batteries, in particular to a battery module and a battery module, which comprise two support members, a battery cell assembly and a first fastening member, the two support members are respectively arranged at the two ends of the battery cell assembly along a first preset direction, and the first support member and the second support member are connected through the first fastening member; the first support member is formed with a plurality of first mounting grooves, the second support member is formed with a plurality of second mounting grooves, one end of any battery cell is arranged in the corresponding first mounting groove along the first preset direction, and the other end of the battery cell opposite to the one end is arranged in the corresponding second mounting groove. It can be seen that the mounting grooves are arranged on the support members, so that the two ends of the battery cell are fixed, the two support members are directly locked and fixed together through the fastening member, the number of parts is reduced, the assembly process is reduced, the assembly difficulty is reduced, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery module and battery assembly. Background Technology

[0002] Existing portable battery modules typically include battery cells, left and right brackets, clamping brackets, and busbars. The battery cells are connected in series and parallel and then fed into the left and right brackets. The clamping brackets then bind the battery cells to the left and right brackets. The busbars are embedded in the left and right brackets and soldered to the positive and negative terminals of the battery cells. This structure has many parts, a complex assembly process, increased assembly difficulty, and low production efficiency. Utility Model Content

[0003] The purpose of this application is to provide a battery module and battery assembly, which to a certain extent solves the technical problems of existing portable battery modules that require additional clamping brackets to clamp and fix the battery cells and left and right brackets, involve many parts, have complex assembly processes, increase assembly difficulty, and have low production efficiency.

[0004] This application provides a battery module, including: a first support member, a second support member, a cell assembly, and a first fastening member; wherein, along a first preset direction, the first support member is installed at one end of the cell assembly, the second support member is installed at the other end of the cell assembly, and the first support member and the second support member are connected through the first fastening member; The first support member has a plurality of first mounting slots, the second support member has a plurality of second mounting slots, the battery cell assembly includes a plurality of battery cells, and along the first preset direction, one end of any battery cell is installed in the corresponding first mounting slot, and the other end of any battery cell is installed in the corresponding second mounting slot.

[0005] In the above technical solution, the first support member further forms a first guide mounting protrusion; the second support member forms a second guide mounting protrusion, and along the first preset direction, the first guide mounting protrusion and the second guide mounting protrusion are connected to each other, and the first fastening member is installed on the first guide mounting protrusion and the second guide mounting protrusion.

[0006] In any of the above technical solutions, one of the first guide mounting protrusion and the second guide mounting protrusion is formed with an assembly protrusion, and the other is formed with an assembly groove. The assembly protrusion is installed in the assembly groove, and the first fastening member is installed on the first guide mounting protrusion, the assembly protrusion and the second guide mounting protrusion.

[0007] In any of the above technical solutions, at least one of the first guide mounting protrusion and the second guide mounting protrusion is provided with a clearance hole, and the side of the clearance hole away from the other is open. The first fastening member is locked onto the first guide mounting protrusion and the second guide mounting protrusion through the clearance hole.

[0008] In any of the above technical solutions, the battery module further includes an insulating plate, which is disposed on the side of the first support member opposite to the second support member; the insulating plate has a positioning hole, and a positioning protrusion is formed on the side of the first support member opposite to the second support member, and the positioning hole is mounted on the positioning protrusion.

[0009] In any of the above technical solutions, the battery module further includes a circuit board and a second fastening member. The circuit board is disposed on the side of the second support member opposite to the first support member. A mounting protrusion is formed on the side of the second support member opposite to the first support member, and the circuit board and the mounting protrusion are detachably connected through the second fastening member.

[0010] In any of the above technical solutions, further, along the second preset direction, a first limiting protrusion is formed on both opposite sides of the first support member; along the second preset direction, a second limiting protrusion is formed on both opposite sides of the second support member.

[0011] In any of the above technical solutions, further, along the third preset direction, at least one opposite end of the first support member is formed with a first mating protrusion; along the second preset direction, at least one end of the second support member is formed with a second mating protrusion, and the second mating protrusion and the first mating protrusion are located at the same end.

[0012] In any of the above technical solutions, further, a plurality of the first mounting slots are arranged in a square array along the second preset direction and the third preset direction; a plurality of the second mounting slots are arranged in a square array along the second preset direction and the third preset direction.

[0013] In any of the above technical solutions, the first support member further includes a first support frame, a first support ring, and a first support plate; wherein the first support frame is a ring frame, the number of first support rings is multiple, and all of them are disposed within the first support frame, and the side of each first support ring facing away from the second support member is provided with the first support plate; the first support frame is connected to adjacent first support rings, any two adjacent first support rings are connected, and the first support plate is connected to the first support rings.

[0014] In any of the above technical solutions, the second support member further includes a second support frame, a second support ring, and a second support plate; wherein the second support frame is a ring frame, the number of second support rings is multiple and all are disposed within the second support frame, and the side of each second support ring facing away from the first support member is provided with a second support plate; the second support frame is connected to adjacent second support rings, any two adjacent second support rings are connected, and the second support plate is connected to the second support rings.

[0015] In any of the above technical solutions, further, along the first preset direction, the depth of one of the first mounting groove and the second mounting groove accounts for 30%-35% of the length of the battery cell, and the depth of the other accounts for 20%-25% of the length of the battery cell.

[0016] In any of the above technical solutions, further, along a direction perpendicular to the first preset direction, the gap between the side wall of one of the first mounting groove and the second mounting groove and the outer wall of the battery cell is 0.1mm-0.15mm, and the gap between the side wall of the other mounting groove and the outer wall of the battery cell is 0.2mm-0.25mm.

[0017] In any of the above technical solutions, the battery module further includes a busbar and an insulating layer; wherein, along the first preset direction, the busbar is provided on the opposite sides of the first support member and the second support member on both sides of the cell assembly, and all the cells are connected in series or in parallel through multiple busbars; a first clearance through hole is formed on the side of the first mounting groove away from the second support member; a second clearance through hole is formed on the side of the second mounting groove away from the first support member; the insulating layer is disposed on the side of the busbar away from the cell.

[0018] In any of the above technical solutions, the first support member and the second support member are both made of insulating material.

[0019] In any of the above technical solutions, the first support member and the second support member are both integral structures.

[0020] In any of the above technical solutions, the first fastening component is further defined as a bolt.

[0021] This application also provides a battery module, including a housing, an end cap, and the battery module described in any of the above technical solutions, wherein the battery cell module is installed inside the housing, and the end cap is fixed to an opening end of the housing. Therefore, it possesses all the beneficial technical effects of this battery module, which will not be elaborated further here.

[0022] In the above technical solution, the battery module further includes a quick-connect plate and a third fastening member, which are fixed to one end of the cell module along a third preset direction. The quick-connect plate is located near the end of the housing away from the end cap, and the quick-connect plate is detachably connected to the end of the adjacent housing through the third fastening member. The quick-connect plate is provided with a quick-connect connector, and the quick-connect connector extends to the outside of the end of the housing.

[0023] In any of the above technical solutions, further, along the second preset direction, the inner walls of the opposite sides of the outer shell are formed with protruding mating ribs, and along the first preset direction, the sides of the first support member and the second support member that are close to each other abut against the opposite sides of the mating ribs; along the second preset direction, the sides of the first support member and the second support member that are opposite to each other abut against the two opposite inner walls of the outer shell.

[0024] Compared with the prior art, the beneficial effects of this application are as follows: The battery module provided in this application is designed with only two support components, and mounting grooves are opened on the support components so that the two ends of the battery cell are respectively installed into the mounting grooves, thereby connecting and assembling the battery cell and the two support components together. There is no need to set up a separate clamping bracket, which reduces the number of parts, reduces assembly steps, reduces assembly difficulty, and greatly improves production efficiency. Moreover, the first support component and the second support component are used to support and fix the battery cell, and the busbar no longer serves as a fixing component for connecting the battery cell, making the busbar less prone to damage. Attached Figure Description To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 An exploded view of the battery module provided in the embodiments of this application; Figure 2 An assembly diagram of the battery module provided in the embodiments of this application; Figure 3This is another assembly diagram of the battery module provided in the embodiments of this application; Figure 4 This is another assembly diagram of the battery module provided in the embodiments of this application; Figure 5 for Figure 4 A sectional view along section AA; Figure 6 for Figure 5 A magnified structural diagram at point B; Figure 7 This is another assembly diagram of the battery module provided in the embodiments of this application; Figure 8 This is another assembly diagram of the battery module provided in the embodiments of this application; Figure 9 This is another assembly diagram of the battery module provided in the embodiments of this application; Figure 10 This is another assembly diagram of the battery module provided in the embodiments of this application; Figure 11 This is a structural schematic diagram of the second support member provided in an embodiment of this application; Figure 12 This is another structural schematic diagram of the second support member provided in the embodiments of this application; Figure 13 This is a structural schematic diagram of the first support member provided in an embodiment of this application; Figure 14 Another structural schematic diagram of the first support member provided in the embodiments of this application; Figure 15 Another structural schematic diagram of the first support member provided in the embodiments of this application; Figure 16 This is another assembly diagram of the battery module provided in the embodiments of this application; Figure 17 for Figure 16 A sectional view along section CC; Figure 18 for Figure 17 A magnified structural diagram at point D; Figure 19 This is a schematic diagram of the battery module provided in an embodiment of this application; Figure 20 This is another structural schematic diagram of the battery module provided in an embodiment of this application; Figure 21 This is another structural schematic diagram of the battery module provided in an embodiment of this application.

[0026] Figure label: 1-First support component, 11-First mounting groove, 12-First guide mounting protrusion, 13-Assembly protrusion, 14-Positioning protrusion, 15-First limiting protrusion, 16-First mating protrusion, 17-First support frame, 18-First support ring, 19-First support plate, 110-First connecting plate, 2-Second support component, 21-Second mounting groove, 22-Second guide mounting protrusion, 23-Assembly groove, 24-Mounting protrusion, 25-Second limiting protrusion 26-Second mating protrusion, 27-Second support frame, 28-Second support ring, 29-Second support plate, 210-Second connecting plate, 211-Allowing hole, 3-Cell assembly, 31-Cell, 4-Busbar, 5-Insulating plate, 6-Circuit board, 7-Insulating layer, 100-Battery module, 200-Housing shell, 300-End cap, 400-Quick-connect plate, 401-Quick-connect connector, a-First preset direction, b-Second preset direction, c-Third preset direction. Detailed Implementation

[0027] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0028] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0029] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] The following reference Figures 1 to 21 This application describes a battery module and battery assembly according to some embodiments.

[0033] Example 1 See Figures 1 to 15 As shown, an embodiment of this application provides a battery module 100, including: a first support member 1, a second support member 2, a cell assembly 3, and a first fastening member; wherein, along a first preset direction a, the first support member 1 is installed at one end of the cell assembly 3, the second support member 2 is installed at the other end of the cell assembly 3, and the first support member 1 and the second support member 2 are connected by the first fastening member; The first support member 1 has a plurality of first mounting slots 11, the second support member 2 has a plurality of second mounting slots 21, the battery cell assembly 3 includes a plurality of battery cells 31, and along the first preset direction a, one end of any battery cell 31 is installed in the corresponding first mounting slot 11, and the other end of any battery cell 31 is installed in the corresponding second mounting slot 21.

[0034] As can be seen from the structure described above, the battery module 100 provided in this application is designed with only two support members, and mounting grooves are opened on the support members, so that the two ends of the battery cell 31 are respectively installed into the mounting grooves, thereby connecting and assembling the battery cell 31 and the two support members together. There is no need to set up a separate clamping bracket, which reduces the number of parts, reduces the assembly process, reduces the assembly difficulty, and greatly improves the production efficiency. Moreover, the first support member 1 and the second support member 2 are used to support and fix the battery cell 31, and the busbar 4 no longer serves as a fixing part for connecting the battery cell 31, and the busbar 4 is not easily damaged.

[0035] Furthermore, preferably, the first preset direction a is the length direction of the battery cell 31, and preferably, in this embodiment, the length direction of the battery cell 31 and the height direction of the battery cell 31 are the same, but of course, it is not limited to this.

[0036] Furthermore, preferably, the first fastening component is a screw or bolt, which provides higher connection strength; however, it is not limited to this.

[0037] In this embodiment, preferably, as follows: Figure 6 , Figures 13 to 15 As shown, the first support member 1 forms a first guide mounting protrusion 12; the second support member 2 forms a second guide mounting protrusion 22, and along the first preset direction a, the first guide mounting protrusion 12 and the second guide mounting protrusion 22 are connected together, and the first fastening member is mounted on the first guide mounting protrusion 12 and the second guide mounting protrusion 22. As can be seen from the structure described above, the first guide mounting protrusion 12 and the second guide mounting protrusion 22 are connected together, which facilitates the installation of fastening components on both, thereby connecting the first support member 1 and the second support member 2 together and increasing the strength of the overall structure. During the installation process, the second support member 2 can be placed horizontally, and the battery cell 31 can be installed vertically into the second mounting groove 21. After the battery cell 31 and the second support member 2 are installed, when the first support member 1 is fastened to the top of the battery cell 31, the second guide mounting protrusion 22 can also play a guiding role. Of course, the assembly sequence is not limited to the above. The first support member 1 can also be placed horizontally, and the battery cell 31 can be installed vertically into the first mounting groove 11. After the battery cell 31 and the first support member 1 are installed, when the second support member 2 is fastened to the top of the battery cell 31, the assembly sequence and assembly position can be selected according to actual needs.

[0038] In this embodiment, preferably, as follows: Figure 6 , Figure 11 and Figure 12 As shown, one of the first guide mounting protrusion 12 and the second guide mounting protrusion 22 is formed with an assembly protrusion 13, and the other is formed with an assembly groove 23. The assembly protrusion 13 is installed in the assembly groove 23, and the first fastening member is installed on the first guide mounting protrusion 12, the assembly protrusion 13 and the second guide mounting protrusion 22. As can be seen from the structure described above, during the process of the first guide mounting protrusion 12 and the second guide mounting protrusion 22 coming into contact, the assembly protrusion 13 and the assembly groove 23 can achieve assembly positioning, thereby accelerating assembly efficiency and accuracy.

[0039] Furthermore, preferably, an assembly protrusion 13 is provided on the first guide mounting protrusion 12, and an assembly groove 23 is provided on the second guide mounting protrusion 22. Of course, it is not limited to this, and an assembly groove 23 may also be provided on the first guide mounting protrusion 12, and an assembly protrusion 13 may be provided on the second guide mounting protrusion 22, depending on the actual needs. It should be noted that the aforementioned mounting protrusion 13 and mounting groove 23 may not be provided. In other words, the ends of the first guide mounting protrusion 12 and the second guide mounting protrusion 22 can be directly brought together. The specific choice depends on the actual needs.

[0040] In this embodiment, preferably, as follows: Figure 6 As shown, at least one of the first guide mounting protrusion 12 and the second guide mounting protrusion 22 is provided with a clearance hole 211, and the side of the clearance hole 211 away from the other is open. The first fastening member is locked onto the first guide mounting protrusion 12 and the second guide mounting protrusion 22 through the clearance hole 211. As can be seen from the structure described above, the first fastening member can be installed into the interior of the clearance hole 211 through the opening of the clearance hole 211, thereby locking the first fastening member onto the first guide mounting protrusion 12 and the second guide mounting protrusion 22. Moreover, the first fastening member is hidden inside the hole and does not protrude from the surface, so it will not affect the assembly of other parts. Furthermore, the clearance hole 211 can also reduce weight.

[0041] Furthermore, preferably, both the first guide mounting protrusion 12 and the second guide mounting protrusion 22 are provided with clearance holes 211. For distinction, the clearance holes 211, which are named the first connecting plate, are referred to as the first clearance hole and the second clearance hole. The first fastening component, such as a screw or bolt, can be installed in the second clearance hole, and it can be fixed by using a self-tapping screw. Of course, it is not limited to this. The first fastening component can also be installed in the first clearance hole, depending on the actual needs. In this embodiment, preferably, as follows: Figure 2 and Figure 15 As shown, the battery module 100 also includes an insulating plate 5, which is disposed on the side of the first support member 1 opposite to the second support member 2. The insulating plate 5 has a positioning hole, and the side of the first support member 1 opposite to the second support member 2 has a positioning protrusion 14, and the positioning hole is mounted on the positioning protrusion 14. As can be seen from the structure described above, the insulating plate 5 serves as an insulating and protective element, and through the cooperation of the positioning hole and the positioning protrusion 14, it enables quick installation and positioning, thereby improving assembly efficiency and precision.

[0042] Furthermore, preferably, the number of positioning holes and positioning protrusions 14 can be multiple, and they are arranged in an array along the second preset direction b and the third preset direction c. Of course, this is not limited to this; the number of positioning holes and positioning protrusions 14 can also be one, etc., depending on the actual needs. In this embodiment, preferably, as follows: Figure 3 , Figure 6 and Figure 12As shown, the battery module 100 also includes a circuit board 6 and a second fastening member. The circuit board 6 is disposed on the side of the second support member 2 opposite to the first support member 1. A mounting protrusion 24 is formed on the side of the second support member 2 opposite to the first support member 1, and the circuit board 6 and the mounting protrusion 24 are detachably connected through the second fastening member. The mounting protrusion 24 serves to support the circuit board 6 and install the second fastening member. As can be seen from the structure described above, the circuit board 6 is mainly used to manage the operation of the battery cell 31 and collect parameters such as the temperature and voltage of the battery cell 31. The circuit board 6 can be fixed to the mounting protrusion 24 of the second support member 2 by the second fastening member, such as screws or bolts, so that the circuit board 6 is more stable. Moreover, it is a detachable connection method, which is convenient for later operation and maintenance. In this embodiment, preferably, as follows: Figure 7 and Figure 13 As shown, along the second preset direction b, a first limiting protrusion 15 is formed on both opposite sides of the first support member 1; along the second preset direction b, a second limiting protrusion 25 is formed on both opposite sides of the second support member 2. As can be seen from the structure described above, after the entire battery cell 31 module is inserted into the outer casing 200, the surface of the first limiting part of the battery cell 31 module near the second limiting part abuts against the mating rib of the inner wall of the outer casing 200, while the side wall of the first limiting part away from the battery cell 31 abuts directly against the inner wall of the outer casing 200. Similarly, the surface of the second limiting part near the first limiting part abuts against the mating rib of the inner wall of the outer casing 200, while the side wall of the second limiting part away from the battery cell 31 abuts directly against the inner wall of the outer casing 200. This achieves the limitation of the battery cell 31 module and prevents it from swaying left and right.

[0043] Of course, the first and second limiting parts can be omitted, and the first support member 1 and the second support member 2 can be directly made to cooperate with the matching ribs on the inner wall of the outer shell 200, etc., depending on the actual needs.

[0044] In this embodiment, preferably, as follows: Figure 7 As shown, along the third preset direction c, at least one end of the first support member 1 is provided with a first mating protrusion 16; along the second preset direction b, at least one end of the second support member 2 is provided with a second mating protrusion 26, and the second mating protrusion 26 and the first mating protrusion 16 are located at the same end.

[0045] As described above, the battery cell 31 module is pushed into the housing 200 along the third preset direction c. After being pushed into place, the first mating protrusion 16 and the second mating protrusion 26 abut against the inner wall or rib of the housing 200. Then, the third fastening component, such as bolts or bolts, described below, can be installed from the top and bottom of the housing to fix the housing 200, the quick-connect plate 400 described below, and the first mating protrusion 16 together. Similarly, the housing 200, the quick-connect plate 400 described below, and the second mating protrusion 26 are locked together to fix the battery cell 31 module and prevent it from moving. Furthermore, preferably, threaded holes are provided on the first mating protrusion 16 and the second mating protrusion 26. Of course, it is not limited to this, and self-tapping screws can also be used to install bolts, depending on the actual needs.

[0046] In this embodiment, preferably, as follows: Figures 13 to 15 As shown, the first support member 1 includes a first support frame 17, a first support ring 18, and a first support plate 19; wherein, the first support frame 17 is an annular frame, and there are multiple first support rings 18, all of which are disposed within the first support frame 17, and a first support plate 19 is provided on the side of any first support ring 18 facing away from the second support member 2; the first support frame 17 is connected to adjacent first support rings 18, any two adjacent first support rings 18 are connected, and the first support plate 19 is connected to the first support rings 18. As can be seen from the structure described above, the first support frame 17, together with multiple first support rings 18, forms a basic frame structure that supports multiple battery cells 31. Furthermore, the first support plate 19 supports one end of the battery cell 31, which satisfies the requirements for supporting and fixing the battery cell 31 while being lightweight, thus contributing to lightweight design.

[0047] Furthermore, preferably, the first support frame 17, the first support ring 18, and the first support plate 19 are an integral structure, but of course, it is not limited to this.

[0048] Furthermore, preferably, along the first preset direction a, the projection of a portion of the structure of the first support plate 19 falls into the first support ring 18, and the other portion of the structure of the first support plate 19 falls outside the first support ring 18. Preferably, each first support ring 18 is provided with three or four first support plates 19. When the first support ring 18 is provided with three first support plates 19, the three first support plates 19 are arranged in a triangle. When the support ring is provided with four first support plates 19, the four first support plates 19 are arranged in a square along the second preset direction b and the third preset direction c. Of course, it is not limited to this.

[0049] Furthermore, preferably, some adjacent first support rings 18 share a first support plate 19. In addition, in areas where there is no first support plate 19, adjacent first support rings 18 can be connected by a first connecting plate 110.

[0050] It should be noted that the structure of the first support member 1 is not limited to this, and can also be designed as other structures, such as a structure with multiple grooves on a flat plate, etc., depending on the actual needs.

[0051] In this embodiment, preferably, as follows: Figure 11 and Figure 12 As shown, the second support member 2 includes a second support frame 27, a second support ring 28, and a second support plate 29; wherein, the second support frame 27 is an annular frame, and there are multiple second support rings 28, all of which are disposed within the second support frame 27, and a second support plate 29 is provided on the side of any second support ring 28 facing away from the first support member 1; the second support frame 27 is connected to adjacent second support rings 28, any two adjacent second support rings 28 are connected, and the second support plate 29 is connected to the second support rings 28. As can be seen from the structure described above, the second support frame 27, together with multiple second support rings 28, forms a basic frame structure that supports multiple battery cells 31. Furthermore, the second support plate 29 supports the other end of the battery cell 31, which satisfies the requirements for supporting and fixing the battery cell 31 while being lightweight, thus contributing to lightweight design.

[0052] Furthermore, preferably, the second support frame 27, the second support ring 28, and the second support plate 29 are an integral structure, but of course, it is not limited to this.

[0053] Furthermore, preferably, along the first preset direction a, the projection of a portion of the structure of the second support plate 29 falls into the second support ring 28, and the other portion of the structure of the second support plate 29 falls outside the second support ring 28. Preferably, each second support ring 28 is provided with three or four second support plates 29. When the second support ring 28 is provided with three second support plates 29, the three second support plates 29 are arranged in a triangle. When the support ring is provided with four second support plates 29, the four second support plates 29 are arranged in a square along the second preset direction b and the third preset direction c. Of course, it is not limited to this.

[0054] Furthermore, preferably, some adjacent second support rings 28 share a second support plate 29. In addition, in areas where there is no second support plate 29, adjacent first support rings 18 can be connected by a second connecting plate 210.

[0055] It should be noted that the structure of the second support member 2 is not limited to this, and can also be designed as other structures, such as a structure with multiple grooves on a flat plate, etc., depending on the actual needs.

[0056] In this embodiment, preferably, as follows: Figures 16 to 18 As shown, along the first preset direction a, the depth of one of the first mounting groove 11 and the second mounting groove 21 is 30%-35% of the length of the battery cell 31, and the depth of the other is 20%-25% of the length of the battery cell 31.

[0057] Furthermore, preferably, the depth H2 of the second mounting groove 21 accounts for 30%-35% of the length L of the battery cell 31, and the depth H1 of the first mounting groove 11 accounts for 20%-25% of the length L of the battery cell 31. As can be seen from the structure described above, when assembling the battery cell 31 with the first support member 1 and the second support member 2, the second support member 2 can be placed horizontally, and the battery cell 31 can be first installed into the second mounting groove 21 of the second support member 2. Since the second mounting groove 21 is relatively deep, the battery cell 31 will not tilt after installation. Then, the first support member 1 with a relatively shallow first mounting groove 11 is fastened on the top of the battery cell 31, which facilitates installation, meets assembly requirements, and does not block the battery cell 31 in a large area, thereby ensuring the heat dissipation effect of the battery cell 31.

[0058] Of course, it is not limited to this. The depth H1 of the first mounting groove 11 can be 30%-35% of the length L of the battery cell 31, and the depth H2 of the second mounting groove 21 can be 20%-25% of the length L of the battery cell 31. In this way, the battery cell 31 can be installed into the first mounting groove 11 of the first support member 1 during assembly.

[0059] In addition, it should be noted that the depth of one of the first mounting slot 11 and the second mounting slot 21 may be less than 30% or greater than 35% of the length L of the battery cell 31, and the depth of the other may be less than 20% or greater than 25% of the length L of the battery cell 31, depending on the actual needs.

[0060] In this embodiment, preferably, as follows: Figures 16 to 18 As shown, along a direction perpendicular to the first preset direction a, the gap a between the wall of one of the first mounting groove 11 and the second mounting groove 21 and the outer wall of the battery cell 31 is 0.1mm-0.15mm, and the gap a between the wall of the other groove and the outer wall of the battery cell 31 is 0.2mm-0.25mm. Furthermore, preferably, the gap a between the side wall of the second mounting groove 21 and the outer wall of the battery cell 31 is 0.1mm-0.15mm, and the gap a between the side wall of the first mounting groove 11 and the outer wall of the battery cell 31 is 0.2mm-0.25mm.

[0061] As can be seen from the structure described above, when assembling the battery cell 31 with the first support member 1 and the second support member 2, the second support member 2 can be placed horizontally, and the battery cell 31 can be first installed into the second mounting groove 21 of the second support member 2. Since the gap a between the side wall of the second mounting groove 21 and the outer wall of the battery cell 31 is small, the battery cell 31 will not loosen after installation. Then, the first support member 1 with the relatively large diameter first mounting groove 11 is fastened to the top of the battery cell 31, which makes assembly easier.

[0062] Of course, it is not limited to this. The gap a between the side wall of the first mounting groove 11 and the outer wall of the battery cell 31 can be 0.1mm-0.15mm, and the gap a between the side wall of the second mounting groove 21 and the outer wall of the battery cell 31 can be 0.2mm-0.25mm.

[0063] In addition, it should be noted that: along the direction perpendicular to the first preset direction a, the gap a between the side wall of one of the first mounting groove 11 and the second mounting groove 21 and the outer wall of the battery cell 31 may be less than 0.1 mm or greater than 0.15 mm, and the gap a between the side wall of the other and the outer wall a of the battery cell 31 may be less than 0.2 mm or greater than 0.25 mm, depending on the actual needs.

[0064] In this embodiment, preferably, as follows: Figure 9 and Figure 10 As shown, the battery module 100 also includes a busbar 4 and an insulating layer 7; wherein, along the first preset direction a, a busbar 4 is provided on the opposite side of the first support member 1 and the second support member 2 on both sides of the cell assembly 3, and all the cells 31 are connected in series or in parallel through multiple busbars 4; a first clearance through hole is formed on the side of the first mounting groove 11 away from the second support member 2 to facilitate the connection between the busbar 4 and the cell 31; a second clearance through hole is formed on the side of the second mounting groove 21 away from the first support member 1 to facilitate the connection between the busbar 4 and the cell 31; the insulating layer 7 is disposed on the side of the busbar 4 away from the cell 31.

[0065] As can be seen from the structure described above, the first support member 1 and the second support member 2 are used to support and fix the battery cell 31. At the same time, the first support member 1 and the second support member 2 can also support the busbar 4. The busbar 4 no longer serves as a fixing part for connecting the battery cell 31, and the busbar 4 is not easily damaged.

[0066] Furthermore, preferably, the busbar 4 is connected to the terminal of the battery cell 31 by welding.

[0067] It should be noted that how to arrange busbar 4 to achieve series and parallel connection is existing technology and will not be described in detail here.

[0068] In this embodiment, preferably, the first support member 1 and the second support member 2 are both made of insulating material, which meets the support requirements and also plays the role of insulation and protection.

[0069] In this embodiment, preferably, as follows: Figures 11 to 15 As shown, both the first support member 1 and the second support member 2 are integral structures, which meet the support requirements and also serve as insulation and protection.

[0070] Example 2 See Figures 19 to 21 As shown, Embodiment 2 of this application also provides a battery module, including a housing 200, an end cap 300, and the battery module 100 described in Embodiment 1 above, wherein the battery cell 31 module is installed inside the housing 200, and the end cap 300 is fixed to an open end of the housing 200. Therefore, it has all the beneficial technical effects of the battery module 100, and the same technical features and beneficial effects will not be repeated.

[0071] In this embodiment, preferably, as follows: Figure 1 , Figures 19 to 21 As shown, the battery module also includes a quick-connect plate 400 and a third fastening member, which is fixed to one end of the battery cell 31 module along the length direction of the battery cell 31 module. The quick-connect plate 400 is located near the end of the housing 200 away from the end cap 300, and the quick-connect plate 400 is detachably connected to the end of the adjacent housing 200 through the third fastening member. The quick-connect plate 400 is provided with a quick-connect connector 401, which extends to the outside of the end of the housing 200 to facilitate docking with external connectors, thereby facilitating use. As described above, the battery cell 31 module is pushed into the housing 200 along the third preset direction c. After being pushed into place, the first mating protrusion 16 and the second mating protrusion 26 abut against the inner wall or rib of the housing 200. Then, the third fastening component, such as bolts or bolts, described below can be installed from the top and bottom of the housing to fix the housing 200, the quick-connect plate 400, and the first mating protrusion 16 together. Similarly, the housing 200, the quick-connect plate 400, and the second mating protrusion 26 are locked together to fix the battery cell 31 module in place and prevent it from moving. In this embodiment, preferably, as follows: Figures 1 to 3As shown, along the second preset direction b, the inner walls of opposite sides of the outer shell 200 are formed with protruding mating ribs, and along the first preset direction a, the sides of the first support member 1 and the second support member 2 that are close to each other abut against the opposite sides of the mating ribs; along the second preset direction b, the sides of the first support member 1 and the second support member 2 that are opposite to each other abut against the two opposite inner walls of the outer shell 200 respectively.

[0072] Furthermore, preferably, the sides of the first limiting protrusion 15 and the second limiting protrusion 25 that are close to each other abut against the opposite sides of the mating rib, and the sides of the first limiting protrusion 15 and the second limiting protrusion 25 that are opposite to each other abut against the two opposite inner sidewalls of the outer shell 200 respectively. As can be seen from the structure described above, after the entire battery cell 31 module is inserted into the outer casing 200, the surface of the first limiting part of the battery cell 31 module near the second limiting part abuts against the mating rib of the inner wall of the outer casing 200, while the side wall of the first limiting part away from the battery cell 31 abuts directly against the inner wall of the outer casing 200. Similarly, the surface of the second limiting part near the first limiting part abuts against the mating rib of the inner wall of the outer casing 200, while the side wall of the second limiting part away from the battery cell 31 abuts directly against the inner wall of the outer casing 200. This achieves the limitation of the battery cell 31 module and prevents it from swaying left and right. Of course, the first and second limiting parts can be omitted, and the first support member 1 and the second support member 2 can be directly made to cooperate with the matching ribs on the inner wall of the outer shell 200, etc., depending on the actual needs.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery module, characterized in that, include: The battery assembly comprises a first support member, a second support member, a battery cell assembly, and a first fastening member; wherein, along a first preset direction, the first support member is installed at one end of the battery cell assembly, the second support member is installed at the other end of the battery cell assembly, and the first support member and the second support member are connected by the first fastening member. The first support member has a plurality of first mounting slots, the second support member has a plurality of second mounting slots, the battery cell assembly includes a plurality of battery cells, and along the first preset direction, one end of any battery cell is installed in the corresponding first mounting slot, and the other end of any battery cell is installed in the corresponding second mounting slot.

2. The battery module according to claim 1, characterized in that, The first support member forms a first guide mounting protrusion; the second support member forms a second guide mounting protrusion, and along the first preset direction, the first guide mounting protrusion and the second guide mounting protrusion are connected to each other, and the first fastening member is mounted on the first guide mounting protrusion and the second guide mounting protrusion.

3. The battery module according to claim 2, characterized in that, One of the first guide mounting protrusion and the second guide mounting protrusion has a mounting protrusion, and the other has a mounting groove, wherein the mounting protrusion is mounted in the mounting groove, and the first fastening member is mounted on the first guide mounting protrusion, the mounting protrusion, and the second guide mounting protrusion; and / or At least one of the first guide mounting protrusion and the second guide mounting protrusion has a clearance hole, and the side of the clearance hole away from the other is open. The first fastening member is locked onto the first guide mounting protrusion and the second guide mounting protrusion through the clearance hole.

4. The battery module according to claim 1, characterized in that, The battery module further includes an insulating plate, which is disposed on the side of the first support member opposite to the second support member; the insulating plate has a positioning hole, and the side of the first support member opposite to the second support member has a positioning protrusion, and the positioning hole is mounted on the positioning protrusion.

5. The battery module according to claim 1, characterized in that, The battery module also includes a circuit board and a second fastening member. The circuit board is disposed on the side of the second support member opposite to the first support member. A mounting protrusion is formed on the side of the second support member opposite to the first support member, and the circuit board and the mounting protrusion are detachably connected through the second fastening member.

6. The battery module according to claim 1, characterized in that, Along the second preset direction, a first limiting protrusion is formed on each of the opposite sides of the first support member; along the second preset direction, a second limiting protrusion is formed on each of the opposite sides of the second support member.

7. The battery module according to claim 1, characterized in that, Along a third preset direction, at least one opposite end of the first support member is formed with a first mating protrusion; along a second preset direction, at least one end of the second support member is formed with a second mating protrusion, and the second mating protrusion and the first mating protrusion are located at the same end. and / or The plurality of first mounting slots are arranged in a square array along the second preset direction and the third preset direction; the plurality of second mounting slots are arranged in a square array along the second preset direction and the third preset direction.

8. The battery module according to claim 1, characterized in that, The first supporting member includes a first supporting frame, a first supporting ring, and a first supporting plate; wherein the first supporting frame is a ring frame, and there are multiple first supporting rings, all of which are disposed within the first supporting frame. The side of each first supporting ring facing away from the second supporting member is provided with a first supporting plate. The first supporting frame is connected to adjacent first supporting rings, any two adjacent first supporting rings are connected, and the first supporting plate is connected to the first supporting rings; and / or The second support member includes a second support frame, a second support ring, and a second support plate; wherein the second support frame is a ring frame, and there are multiple second support rings, all disposed within the second support frame, with a second support plate disposed on the side of each second support ring facing away from the first support member; the second support frame is connected to adjacent second support rings, any two adjacent second support rings are connected, and the second support plate is connected to the second support rings; and / or Along the first preset direction, the depth of one of the first mounting groove and the second mounting groove is 30%-35% of the length of the battery cell, and the depth of the other is 20%-25% of the length of the battery cell; and / or Along a direction perpendicular to the first preset direction, the gap between the side wall of one of the first and second mounting slots and the outer wall of the battery cell is 0.1mm-0.15mm, and the gap between the side wall of the other slot and the outer wall of the battery cell is 0.2mm-0.25mm; and / or The battery module further includes busbars and an insulating layer; wherein, along the first preset direction, the busbars are provided on the opposite sides of the first support member and the second support member on both sides of the cell assembly, and all the cells are connected in series or in parallel through multiple busbars; a first clearance through hole is formed on the side of the first mounting groove away from the second support member; a second clearance through hole is formed on the side of the second mounting groove away from the first support member; the insulating layer is disposed on the side of the busbar away from the cell; and / or Both the first support member and the second support member are made of insulating material; and / or Both the first support member and the second support member are integral structures; and / or The first fastening component is a bolt.

9. A battery module, characterized in that, The device includes a housing, an end cap, and a battery module as described in any one of claims 1 to 8, wherein the battery module is installed inside the housing, and the end cap is fixed to an open end of the housing.

10. The battery module according to claim 9, characterized in that, The battery module further includes a quick-connect plate and a third fastening member, which are fixed to one end of the cell module along a third preset direction. The quick-connect plate is located near the end of the housing away from the end cap, and the quick-connect plate is detachably connected to the adjacent end of the housing via the third fastening member. The quick-connect plate is provided with a quick-connect connector, which extends to the outside of the end of the housing. and / or Along the second preset direction, the inner walls of the opposite sides of the outer shell are formed with protruding mating ribs, and along the first preset direction, the sides of the first support member and the second support member that are close to each other abut against the opposite sides of the mating ribs. Along the second preset direction, the opposite sides of the first support member and the second support member respectively abut against the two opposite inner sidewalls of the outer shell.

Images