Battery assembling bracket and lithium ion battery module

Abstract

The utility model relates to the field of lithium ion batteries, and discloses a battery assembly bracket and a lithium ion battery module. The battery assembling support comprises a vertical frame of an integrated structure, the vertical frame comprises a bottom frame, a top frame and two vertical borders, the bottom frame and the top frame are opposite, the two vertical borders are connected between the two tail ends of the bottom frame and the top frame, the bottom frame, the top frame and the two borders are spaced faces in the vertical plane, and the top face of the bottom frame is a horizontal storage table. The storage table and the opposite inner side faces of the two frames form a storage frame, and the storage frame is partitioned into a front frame located on the front face of the partition face and a rear frame located on the back face of the partition face through the partition face. By applying the scheme, the assembly efficiency of the battery pack is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery packs, and in particular to a battery assembly bracket and a lithium-ion battery module. Background Technology

[0002] With the increasingly widespread application of batteries, especially lithium-ion batteries, more and more devices are using lithium-ion batteries, and the operating environments are becoming increasingly complex and diverse. As the application of lithium-ion batteries becomes more widespread, market competition intensifies, leading to higher demands for manufacturing costs, assembly, and maintenance flexibility in lithium-ion battery packs, as well as in their repair and maintenance during use.

[0003] During the research process of this utility model, the inventors discovered that current lithium-ion battery packs are mainly composed of assembled cells wrapped with tape. Existing technology has the risk of cells easily loosening and falling off, and is also not conducive to the maintenance of the battery pack. Summary of the Invention

[0004] One of the objectives of this utility model embodiment is to provide a battery assembly bracket and a lithium-ion battery module, which can help improve the assembly efficiency of the battery pack.

[0005] This utility model provides a battery mounting bracket, comprising an integrated upright frame. The upright frame includes a bottom frame, a top frame, and two upright side frames connected between the two ends of the bottom frame and the top frame. A vertical plane spacer is formed between the bottom frame, the top frame, and the two side frames.

[0006] The top surface of the bottom frame is a horizontal shelf, and the shelf and the opposing inner sides of the two side frames form a shelf frame. The partition surface divides the shelf frame into a front frame located on the front of the partition surface and a back frame located on the back.

[0007] Optionally, it also includes a busbar fixing part, which is disposed on the top surface of the top frame for fixing the busbar.

[0008] Optionally, it also includes a limiting groove disposed in the middle of the top frame, the limiting groove extending in the front-rear direction.

[0009] Optionally, the two sides of the limiting groove are higher than the top surface of the top frame, and lateral openings are respectively provided on the two sides of the groove.

[0010] Optionally, it also includes,

[0011] A plurality of upright studs are provided on the top of the top frame.

[0012] Optionally, a plurality of through holes are provided on the top frame and the bottom frame respectively.

[0013] Optionally, the spacer surface is cross-shaped and is integrated with the bottom frame, top frame, and two side frames.

[0014] Optionally, the width of the top frame is narrower than the width of the shelf and narrower than the width of the two side frames.

[0015] Optionally, through holes are provided at the four corners of the upright frame, with each through hole located in the space between the through holes of the storage frame.

[0016] Optionally, the front and rear opposite ends of the bottom frame are respectively provided with protruding positioning posts and recessed positioning holes, each positioning post having a positioning hole opposite to it, and each positioning hole having a positioning post opposite to it.

[0017] Optionally, a first latching part and a second latching part that can be adapted to the buckle are respectively provided on the outer sides of the two frame sides.

[0018] For each of the first latching portions on the outer side of any of the aforementioned frame pieces, there is a second latching portion on the outer side of the other frame piece that is horizontally opposite to it.

[0019] Each of the second latching portions on the outer side of any of the aforementioned frame shall have a second latching portion on the outer side of the other of the aforementioned frame, which is horizontally opposite to it.

[0020] Secondly, the present invention provides a lithium-ion battery module comprising:

[0021] Any of the battery mounting brackets described above,

[0022] Two individual battery cells are respectively assembled in the front frame and the rear frame of the battery assembly bracket.

[0023] As can be seen from the above, the battery assembly bracket structure of this embodiment is compact. Battery cells are installed on both sides of the isolation surface of the bracket. The series and parallel connections between the tabs of the two battery cells can be made in the top frame to obtain a battery module. The bottom frame of the upright frame serves as the bottom support of the battery module. This battery module has a compact structure, is easy to install, and is conducive to improving the production efficiency of battery packs. Attached Figure Description

[0024] The accompanying drawings, which are provided to further illustrate the present invention and form part of this application, do not constitute an undue limitation of the present invention.

[0025] Figure 1 A three-dimensional structural diagram of the battery assembly bracket provided in an embodiment of this utility model;

[0026] Figure 2 A side view of the battery assembly bracket provided in an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the front and rear end face structures of the battery assembly bracket provided in an embodiment of the present utility model;

[0028] Figure 4 , 5 These are top and bottom views of the battery assembly bracket provided in the embodiments of this utility model.

[0029] Figure 6 This is an exploded view of the battery module provided in an embodiment of the present invention;

[0030] Figure 7 This is a three-dimensional structural diagram of the battery module provided in an embodiment of the present utility model;

[0031] Figure 8 Schematic diagrams of the front and rear ends of the battery module provided in this embodiment of the utility model;

[0032] Figure 9 , 10 These are side and top view structural schematic diagrams of the battery module provided in the embodiments of this utility model;

[0033] Figures 11-15 These are schematic diagrams of the assembly structure of the lithium-ion battery pack provided in Embodiment 2.

[0034] Figure 16 This is an exploded structural diagram of the lithium-ion battery pack provided in Embodiment 2.

[0035] Figures 17-19 These are top view, front view (rear view), and side view structural schematic diagrams of the lithium-ion battery pack provided in Embodiment 2 of this utility model.

[0036] Figure 20 This is a schematic diagram of the structure of a lithium-ion battery pack provided in Embodiment 3 of this utility model.

[0037] 11: Base frame; 12: Top frame; 13: Frame; 14: Shelf; 15: Busbar fixing part;

[0038] 16: Spacer surface; 17: Through hole; 18: Hole portion; 19: Stud; 22: Limiting groove;

[0039] 61: Positioning pin; 62: Positioning hole; 63: First latching part; 64: Second latching part;

[0040] 21: Busbar; 23: Through slot; 24: Temperature and voltage acquisition module; 31: Battery cell;

[0041] 32: Electrode lug; 41: Screw; 42: Protective cover plate; 43: End plate; 44: Lifting hole;

[0042] 45: Insulating buffer sheet; 46: Insulating spacer block; 51: Insulating protective sleeve. Detailed Implementation

[0043] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0044] Example 1.

[0045] See Figure 1-20 Show.

[0046] This embodiment provides a battery mounting bracket suitable for lithium-ion battery packs and a battery module composed of the mounting bracket.

[0047] The main body of the mounting bracket is an upright frame made of a one-piece molded insulating material, such as, but not limited to, a rigid plastic part made of one-piece injection molding. A spacer surface 16 in a vertical plane is provided at the center of the upright frame. For ease of description, the side with the front of the spacer surface 16 is referred to as the front, and the side with the back of the spacer surface 16 is referred to as the rear.

[0048] The upright frame includes a bottom frame 11 and a top frame 12 that are opposite each other, and two upright side frames 13 located between the bottom frame 11 and the top frame 12. The two side frames 13 are opposite each other from left to right. The top of the two side frames 13 is connected to the left and right ends of the top frame 12, and the bottom of the two side frames 13 is connected to the left and right ends of the bottom frame 11, forming a frame.

[0049] A horizontal shelf 14 is provided at the top of the bottom frame 11. The left and right ends of the shelf 14 are connected to the lower ends of the two side frames 13 of the upright frame to form a shelf frame. The inner sides of the two upright frames are the upright side frames of the shelf frame. The partition surface 16 divides the shelf frame into a front frame located on the front of the partition surface 16 and a back frame located on the back of the partition surface 16.

[0050] When used for battery pack assembly, one battery cell 31 (or battery cell) is placed on the platform 14 of the front frame, and another battery cell 31 is placed on the platform 14 of the rear frame. The left and right sides of the two battery cells 31 are respectively located inside the left and right side frames 13, and the spacer surface 16 is spaced between the two battery cells 31.

[0051] As an illustration of this embodiment, preferably, the width of the top frame 12 in the front-to-back direction is narrower than the width of the shelf 14 and narrower than the width of the two side frames 13. The top frame 12 and the spacer surface 16 are both located in the middle of the width of the shelf 14 and each side frame 13. The electrodes of the two battery cells 31 located on both sides of the spacer surface 16 extend from both sides of the top frame 12.

[0052] A busbar fixing part 15 is also provided on the top surface of the top frame 12. In this embodiment, the positive and negative tabs 32 of the battery cell 21 extend from the top together as an illustration. Two busbar fixing parts 15 are provided on the top surface of the top frame 12, and there is a certain gap between the two busbars 21. The tabs 32 of the two battery cells 21 extend from the two sides of the top frame 12 respectively, bend on the top frame 12 to connect the tabs 32 of the two battery cells 31. Then, the two busbars 21 are fixed on the top frame 12 respectively, so that the connected tabs 32 are pressed tightly under the busbars 21, realizing the connection between the two battery cells 31, and obtaining the battery module. The two battery cells 31 can be connected in parallel or in series. As can be seen from the above, compared with the existing technology that welds the tabs 32 of the battery cell 31 to the top surface of the busbar 21, this solution can use screws to lock the busbar 21 onto the top frame 12 and press it onto the tabs 32 to achieve the fixation and electrical connection between the tabs 32. This is more convenient to operate, does not require welding equipment, has lower manufacturing costs, and when disassembling the battery pack and replacing the battery cell 31, the connection between the busbar 21 and the tabs 32 can be removed by unscrewing the screws, which is flexible and convenient.

[0053] As can be seen from the above, the battery assembly bracket structure of this embodiment is compact. Battery cells 31 are installed on both sides of the isolation surface of the bracket. The tabs 32 of the two battery cells 31 can be connected in series and parallel on the top frame 12 to obtain a battery module. The bottom frame 11 of the upright frame serves as the bottom support of the battery module. This battery module has a compact structure, is easy to install, and is conducive to improving the production efficiency of the battery pack.

[0054] As an illustration of this embodiment, the upright frame of this embodiment is provided with through holes 17 at the top, bottom, left and right corners, and each through hole 17 is located outside the storage frame, that is, the storage frame is located in the space between each through hole 17, and the position of the screw 41 is higher than the plane where the busbar 21 is located.

[0055] During battery pack assembly, multiple battery modules can be stacked one on top of the other. The electrodes of the top frame 12 of each battery module are electrically connected according to the series and parallel connection relationship of the modules. Four screws 41 pass through the through holes 17 at the four vertices of each battery module, locking the screws 41 to ensure the battery modules are tightly attached. Multiple battery modules form a larger battery pack. In practical applications, the number of battery modules can be increased or decreased according to application needs. During battery pack adjustment, assembly, and disassembly, the user only needs to adjust the screws 41 at each vertices; there is no need to replace the housing. This solution helps reduce the amount of material used in battery pack production and lowers production costs.

[0056] As an illustration of this embodiment, the top frame 12 of the mounting bracket in this embodiment also has a plurality of through holes 18 hollowed out as weight-reduction holes to reduce the weight of the battery module. These holes 18 are evenly distributed on the top frame 12.

[0057] Similarly, a plurality of through holes 18 are hollowed out on the bottom frame 11 as weight-reducing holes, and the shelf 14 is located on the top surface of the bottom frame 11.

[0058] As an illustration of this embodiment, a cross-shaped spacer surface 16 can be used, but is not limited to. A through-hole is cut out on the inner side of the upright frame near the four corners. The spacer surface 16 is connected in a cross shape to the left and right side frames 13, the bottom frame 11, and the top frame 12. This structure helps save material costs and reduce the weight of the battery pack. It also facilitates heat dissipation for the two battery cells 31 on both sides of the spacer surface 16, improving the heat dissipation effect.

[0059] As an illustration of this embodiment, the top of the top frame 12 is a plane in the middle. Taking the positive and negative terminals of the battery cell 31 as an example, in application, a busbar 21 made of conductive material can be fixed on the top of the top frame 12 on each limiting platform. The tabs 32 of each battery cell 31 extending from both sides of the top frame 12 are bent to the top surface of the busbar 21 and welded to the busbar 21. The series or parallel connection between each battery cell 31 is realized through the busbar 21, which facilitates the assembly of the battery pack.

[0060] As an illustration of this embodiment, a plurality of studs 19 are provided on the top surface of the top frame 12 of the upright frame. The top of each stud 19 is flush with the top, and the opening of the screw hole of each stud 19 faces upward, so that when assembling the battery pack, an insulating protective cover plate 42 can be installed on the top surface of these studs 19 to cover the electrode connection components such as the busbar 21 under the protective cover plate 42 for dust and moisture protection.

[0061] Although this embodiment is illustrated with the positive and negative tabs 32 of each battery cell 31 extending from the top of the battery, and with two busbars 21 provided on the top frame 12 of the mounting bracket, the actual implementation is not limited to this. For example, when one of the positive and negative tabs 32 of the battery cell 31 extends from the top of the battery and the other extends from the bottom of the battery, busbars 21 can be provided on the top surface of the top frame 12 and the bottom surface of the bottom frame 11 respectively to connect the tabs 32 between the two battery cells 31, thereby realizing the series and parallel connection between the battery cells 31.

[0062] In addition, as an illustration of this embodiment, a limiting groove 22 extending in the front-to-back direction is provided in the middle of the top frame 12. The limiting groove 22 is spaced between the two busbars 21. In this way, a temperature and voltage acquisition module 24 can be laid in the limiting groove 22. The temperature and voltage acquisition module 24 is provided with an extended part, which is closely attached to each busbar 21. For example, but not limited to, it is locked together with the busbar 21 by the busbar fixing part 15, so as to detect the temperature of the battery module in real time and ensure the safety of charging and discharging.

[0063] Example 2.

[0064] See Figures 1-20 As shown, this embodiment provides a lithium-ion battery pack, which consists of at least two lithium-ion battery modules as shown in Embodiment 1.

[0065] Referring to the diagram, according to the series and parallel connection relationship between the battery modules, the battery modules are arranged in a row with their front and back faces (largest area) facing each other to form a battery pack body, so that the electrodes of two adjacent battery cells 31 that need to be electrically connected are located in the same row and extend from the top.

[0066] In the battery pack body, the battery cells 31 of each battery module face each other, and the through holes 17 at the four corners of each upright frame are sequentially aligned, i.e., the through holes 17 are on four parallel straight lines. Four screws 41 pass through the through holes 17 at the four corners, connecting the battery modules together and locking the two ends of each screw 41, so that the upright frames of each lithium-ion battery module are sequentially and tightly attached together. Each battery cell 31 is encapsulated in the front and rear frames of each upright frame and locked in the space between the four screws 41, resulting in a fixed battery pack body. The tabs 32 of the battery cells 31 form two rows at the top of the battery pack body. The tabs 32 of each battery cell 31 extend from the top frame 12 of its respective upright frame to the top of the battery pack body. Connecting the tabs 32 extending to the top in series, parallel, or a combination of series and parallel connections yields the battery pack body, which provides power to the outside through the positive and negative terminals.

[0067] As can be seen from the above, the battery pack in this embodiment consists of multiple battery modules connected together by screws 41. The battery pack is flexible and easy to assemble, and its application helps to improve assembly efficiency and reduce production costs.

[0068] When any battery cell 31 or battery module is damaged, the user can loosen the locking screw 41 to remove the faulty battery cell 31 or battery module for replacement or removal. When reassembling the battery pack, simply re-thread the four screws 41 and lock them. Therefore, the battery pack of this embodiment is suitable for a variety of applications and is easy to maintain.

[0069] As an illustration of this embodiment, a plurality of busbars 21 made of conductive materials with good conductivity are provided, such as copper busbars 21.

[0070] As an illustration of this embodiment, the electrodes of adjacent battery cells 31 are bent and pressed tightly against the flat top surface of the top frame 12. The busbar 21 is covered on the top surface of the electrode that needs to be electrically connected to the same electrical node. The busbar 21 is locked onto these top frames 12, so that the tabs 32 that need to be electrically connected are pressed tightly against the bottom surface of the same busbar 21, and are tightly attached between the top frame 12 and the busbar 21, and are electrically connected together through the busbar 21.

[0071] As another preferred embodiment, but not limited to, square through slots 23 can be provided on each busbar 21, allowing each tab 32 to pass through vertically. Tabs 32 that need to be electrically connected to the same busbar 21 extend from the through slots 23 on the busbar 21. Each busbar 21 is then locked to the top surface of the top frame 12, and each tab 32 is bent and pressed tightly against the top surface of its respective busbar 21, and laser-welded to the top surface of the busbar 21. Using this method, the connection between each tab 32 and the busbar is more stable. Furthermore, with the tabs located on the top surface of the busbar, the series or parallel electrical connection relationships between each battery cell 31 are more clearly visible.

[0072] As an illustration of this embodiment, multiple sizes of busbars 21 can be designed based on the series or parallel connection relationship within the battery pack body of the current batch, the number of battery modules included, and the ease of assembly. Two rows of busbars 21 are formed on the top surface of the battery pack body, with multiple busbars 21 in each row, and each busbar 21 corresponds to the tabs 32 of multiple battery cells 31.

[0073] As an illustration of this embodiment, a limiting groove 22 is provided on the top of each upright frame. The limiting groove 22 may be, but is not limited to, a limiting baffle plate located on both sides of the limiting groove 22 and extending above the top surface of the top frame 12. When the front and rear doors of each battery module are arranged opposite each other, the limiting grooves 22 on the top surface of each battery module are directly connected, and each busbar 21 is located on both sides of the connected limiting groove 22. A strip-shaped temperature and voltage acquisition module 24 is provided on the top surface of the battery pack body and is placed in the limiting groove 22 directly opposite the opening. The temperature and voltage acquisition module 24 is provided with a circuit and a temperature sensor electrically connected to the circuit. On both sides of the strip-shaped temperature and voltage acquisition module 24 along its length, there are also a plurality of protrusions extending to both sides. Each protrusion extends from both sides and is locked and electrically connected to the top surface of each busbar 21 to collect the voltage of the electrical connection of each locked busbar. The strip-shaped temperature and voltage acquisition module 24 detects the temperature at predetermined detection positions on the top surface of the battery pack body and acquires the voltage at predetermined electrical nodes. It transmits the detected temperature and voltage values ​​to the charge / discharge control circuit to protect the battery pack. Furthermore, it can output the temperature and voltage data to the user, allowing the user to monitor the battery pack's status in real time, promptly detect abnormalities, and ensure the battery pack's safety.

[0074] As an illustration of this embodiment, the strip-shaped temperature and voltage acquisition module 24 can be made of a flexible circuit board. A pin header can be attached to one end of the strip-shaped temperature and voltage acquisition module 24, and the transmission of temperature detection data and voltage acquisition data can be achieved through the electrical connection of the pin header interface.

[0075] As an illustration of this embodiment, at least two studs 19 are provided on the top surface of each top frame 12 of each upright frame, and each stud 19 has a screw hole with the opening facing upwards. After the screws 41 are locked, the electrical connection of the tabs 32 between each battery cell 31 is completed, and the temperature and voltage acquisition module 24 is fixed, a protective cover plate 42 is placed on top of the battery pack body. The bottom surface of the protective cover plate 42 is supported on the top of each stud 19. After locking the protective cover plate 42, the busbar 21, temperature and voltage acquisition module 24 and other electrical connection components are completely covered under the protective cover plate 42, and there is a predetermined distance between the protective cover plate 42 and the electrical connection components below. The design of this protective cover plate 42 is beneficial to improving the moisture-proof and dust-proof effect of the battery pack.

[0076] In this embodiment, the battery pack also includes two end plates 43, each with a through hole 17 corresponding to a through hole 17 at one of the four corners of the upright frame. During assembly, the flat surfaces of the end plates 43 are brought into contact with the end faces of the battery modules located at the two ends of the battery pack body. The two ends of the four screws 41 pass through the through holes 17 at the four corners of the end plates 43. Fastening nuts are screwed onto the outer end faces of the end plates 43, locking each battery module between the end plates 43. Each battery cell 31 is encapsulated within the upright frame of its respective battery module. As an illustration of this embodiment, battery pack mounting portions are provided on the outer end faces of the end plates 43. For example, a metal plate can be used as the end plate 43, with an insulating layer sprayed onto its surface. Additionally, at least one horizontally bent sheet metal portion can be formed on the outer end face of each end plate 43, with mounting holes 44 provided on the sheet metal portion. The technical solution of this embodiment is beneficial to improving the structural tightness of the battery pack body, and the external installation structure with end plate 43 hoisting is beneficial to improving the shock resistance of the battery pack during use.

[0077] As an illustration of this embodiment, a soft insulating buffer sheet 45 can be further spaced between the inner end face of the two end plates 43 and the outer end face of the battery modules at both ends to further improve the shock resistance of the battery pack.

[0078] As an illustration of this embodiment, a plurality of insulating spacers 46 are fixed on the top surface of the battery pack body. The insulating spacers 46 are higher than the top surface of each busbar 21. Each insulating spacer 46 is spaced between two adjacent busbars 21 with different electrodes to provide insulation.

[0079] As an illustration of this embodiment, the main positive and main negative terminals of the battery pack body can extend beyond the end plates 43 of the battery pack body and are located outside the protective cover plate 42 to facilitate connection during application. In addition, insulating protective sleeves 51 are also fitted onto the main positive and main negative terminals to improve moisture and dust resistance.

[0080] As an illustration of this embodiment, on the bottom frame 11 of the upright frame of each battery module, there are protruding positioning posts 61 and recessed (or penetrating) positioning holes 62 on the two opposite front and rear end faces of the bottom frame 11. This ensures that the back of any positioning post 61 has a positioning hole 62 opposite to it on its opposite end face, and the back of any positioning hole 62 has a positioning post 61 opposite to it on its opposite end face, forming a one-to-one opposite relationship. Thus, when assembling the battery pack body of this embodiment, the bottom frames 11 of any two adjacent battery modules are in face-to-face contact, and the positioning posts 61 on the opposite bottom frames 11 are all confined within the positioning holes 62 of the opposite bottom frames 11. This limits the connection between the two opposite bottom frames 11 and prevents displacement, further facilitating positioning and assembly, improving assembly efficiency, and enhancing the structural stability of the assembled battery pack.

[0081] The specific assembly process is as follows:

[0082] 1. Battery module assembly, see Figures 6-10 As shown, each pair of battery cells 31 is assembled onto an assembly bracket to obtain a battery module. Multiple battery modules are obtained in this manner.

[0083] 2. See Figure 11 As shown, according to the requirements of series and parallel connection, a predetermined number of battery modules are arranged face to face in a row, and the positioning holes 62 and positioning posts 61 on the bottom frame 11 of each module are fixed together for limiting.

[0084] 3. See Figure 12 As shown, end plates 43 (and insulating buffer sheets 45) are fixed at the front and rear ends of the arrayed battery modules, respectively. Screws 41 pass through the end plates 43 and the arrayed battery modules, and screws 41 are locked at the outer end faces of the two end plates 43.

[0085] 4. See Figure 13 As shown, insulating spacers 46 are installed between adjacent electrical nodes with different electrodes at the top of the battery pack.

[0086] 5. See Figure 14 As shown, a busbar 21 is installed on the top of the battery pack, and each tab 32 is electrically connected to the busbar 21; a temperature and voltage acquisition module 24 is installed.

[0087] 6. See Figure 15 As shown, install the electrode protective sleeve and the protective cover plate 42 to obtain the battery pack.

[0088] Example 3.

[0089] See Figures 1-20 As shown.

[0090] This embodiment provides a battery pack composed of a plurality of battery packs as shown in Embodiment 2, which are further connected in series or in parallel as combining units.

[0091] In Embodiment 2, each of the two outer sides of the upright frame 13 of each battery module of the battery pack body is provided with a first latching part 63 and a second latching part 64. The first latching part 63 and the second latching part 64 are latching parts that can latch each other, for example, one of them is a top post and the other is a hole that is adapted to it. On an upright frame, any first latching part 63 on the outer side of any frame 13 has a second latching part 64 that is horizontally opposite to it on the outer side of the other frame 13, and any second latching part 64 on the outer side of any frame 13 has a first latching part 63 that is horizontally opposite to it on the outer side of the other frame 13. In this way, a plurality of first latching parts 63 and second latching parts 64 are distributed on the left and right outer sides of the battery pack body with the structure shown in Embodiment 2 that are perpendicular to the front and rear end plates 43. When the battery packs of the embodiment are further combined into larger battery packs, the battery pack units can be positioned so that the first latching portions 63 on their opposite outer surfaces are respectively locked to the second latching portions 64 on their opposite outer surfaces. This connects the sides of two adjacent rows of battery pack units together. Similarly, this method can be used to connect any adjacent battery pack units. After assembly, the electrodes outside the end plates 43 of each battery pack unit can be electrically connected (in series or parallel) using wires or adapter strips to obtain a further battery pack.

[0092] As can be seen from the above, the battery pack structure of this embodiment is flexible in assembly, can adapt to various application scenarios, and is conducive to the application and promotion of lithium-ion batteries.

[0093] The embodiments described above do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the scope of protection of this technical solution.

Claims

1. A battery mounting bracket, characterized in that, The system includes an integrated upright frame, comprising a bottom frame, a top frame, and two upright side frames connecting the two ends of the bottom and top frames. The space between the bottom frame, the top frame, and the two side frames is a vertical plane. The top surface of the bottom frame is a horizontal shelf, and the shelf and the opposite inner sides of the two side frames form a shelf frame. The partition surface divides the shelf frame into a front frame located on the front of the partition surface and a back frame located on the back.

2. The battery mounting bracket according to claim 1, characterized in that, It also includes, A busbar fixing part is provided on the top surface of the top frame and is used to fix the busbar.

3. The battery mounting bracket according to claim 2, characterized in that, It also includes, A limiting groove is provided in the middle of the top frame, and the limiting groove extends in the front-to-back direction.

4. The battery mounting bracket according to claim 3, characterized in that, The two sides of the limiting groove are higher than the top surface of the top frame, and lateral openings are respectively opened on the two sides of the groove.

5. The battery mounting bracket according to claim 3, characterized in that, It also includes, A plurality of upright studs are provided on the top of the top frame.

6. The battery mounting bracket according to claim 1, characterized in that, The top frame and bottom frame are provided with a plurality of through holes.

7. The battery mounting bracket according to claim 1, characterized in that, The spacer surface is cross-shaped and is integrated with the bottom frame, top frame, and two side frames.

8. The battery mounting bracket according to claim 1, characterized in that, The width of the top frame is narrower than the width of the shelf and narrower than the width of the two side frames.

9. The battery mounting bracket according to claim 1, characterized in that, The upright frame has through holes at its four corners, with each through hole located within the space between the holes on the frame.

10. The battery mounting bracket according to claim 1, characterized in that, The bottom frame has protruding positioning posts and recessed positioning holes on its front and back opposite ends. Each positioning post has a positioning hole opposite to it, and each positioning hole has a positioning post opposite to it.

11. The battery mounting bracket according to claim 1, characterized in that, The outer sides of the two frames are respectively provided with a first latching part and a second latching part that can be adapted to the buckle. For each of the first latching portions on the outer side of any of the aforementioned frame pieces, there is a second latching portion on the outer side of the other frame piece that is horizontally opposite to it. Each of the second latching portions on the outer side of any of the aforementioned frame shall have a second latching portion on the outer side of the other of the aforementioned frame, which is horizontally opposite to it.

12. A lithium-ion battery module, characterized in that, include, The battery mounting bracket according to any one of claims 1 to 11, Two individual battery cells are respectively assembled in the front frame and the rear frame of the battery assembly bracket.

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