Layered battery pack

Abstract

The utility model discloses a layered battery pack which comprises a first mounting mechanism, a containing mechanism and a second mounting mechanism, the first mounting mechanism is arranged on one side of the containing mechanism, the second mounting mechanism is arranged on the other side of the containing mechanism, and a containing cavity is defined by the first mounting mechanism, the containing mechanism and the second mounting mechanism. The accommodating cavity is used for accommodating a battery cell, the second mounting mechanism comprises a liquid cooling plate, and the liquid cooling plate abuts against the battery cell and is used for cooling the battery pack. The first mounting mechanism, the accommodating mechanism and the second mounting mechanism are matched to form the battery pack, so that the battery pack preparation process is simplified, the material use is reduced, the preparation cost is reduced, the space utilization rate in the battery pack is effectively improved, and the battery pack mounting efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a layered battery pack. Background Art

[0002] In the energy storage system, the battery module is an intermediate product between the battery cell and the battery pack formed by combining lithium-ion battery cells in series and parallel, and adding a single-cell battery monitoring and management device. Its structure supports, fixes and protects the battery cells.

[0003] The conventional module structure is to stack the cells first, use structural glue or double-sided glue between the cells, squeeze them tightly, and then apply steel strips to constrain the module specifications. The produced modules also need to be hoisted into the box and then fixed. In this process, the cells are moved twice, which consumes a lot of production line resources and auxiliary materials, and the step of applying steel strips requires human participation, which poses a safety hazard. The utility model proposes a new solution to the above problems. Utility Model Content

[0004] In order to overcome at least one of the above-mentioned disadvantages, the present invention provides a layered battery pack. The purpose of the present invention can be achieved by adopting the following technical solutions:

[0005] The utility model provides a layered battery pack, which includes a first mounting mechanism, a accommodating mechanism, and a second mounting mechanism. The first mounting mechanism is arranged on one side of the accommodating mechanism, and the second mounting mechanism is arranged on the other side of the accommodating mechanism. The first mounting mechanism, the accommodating mechanism, and the second mounting mechanism form an accommodating cavity, and the accommodating cavity is used to accommodate battery cells. The second mounting mechanism includes a liquid cooling plate, and the liquid cooling plate is abutted against the battery cells to dissipate heat from the battery pack.

[0006] In one embodiment, the accommodating mechanism includes a frame, and the first mounting mechanism includes a cover, the cover is provided on one side of the frame, and the liquid cooling plate is provided on the other side of the frame, and the cover, the frame and the liquid cooling plate enclose the accommodating cavity.

[0007] In one possible implementation, the liquid cooling plate is provided with a raised limiting member, the frame is provided with limiting grooves corresponding to the limiting members one by one, and when the liquid cooling plate is connected to the frame, the limiting member is inserted into the limiting groove.

[0008] In one possible implementation manner, the first mounting mechanism, the accommodating mechanism and the second mounting mechanism are connected via a connecting member.

[0009] In one possible implementation manner, a first mounting hole is provided on the cover body, a second mounting hole is provided on the frame body, a third mounting hole is provided on the liquid cooling plate, and the connecting member is passed through the first mounting hole and the second mounting hole and connected to the second mounting hole to connect the cover body, the frame body and the liquid cooling plate.

[0010] In one possible implementation, the layered battery pack further includes an insulating mechanism, which is connected to the liquid cooling plate / the frame and is used to fit with the battery cell, and the insulating mechanism is placed in the accommodating cavity.

[0011] In one embodiment, the accommodating cavity includes at least two accommodating chambers that are interconnected, the accommodating chambers are used to accommodate the battery cells, and a fastening mechanism is provided between two adjacent accommodating chambers, and the fastening mechanism can squeeze the battery cells located in the accommodating chambers;

[0012] Wherein, the fastening mechanism includes an abutment and a fixing member, the abutment are symmetrically arranged on both sides of the fixing member, the battery cell in the accommodating chamber is located on the side of the symmetrically arranged abutment away from each other, the fixing member can be movably clamped between the two symmetrically arranged abutment members, and the fixing member can move between the two abutment members to adjust the distance between the two abutment members, so as to adjust the distance between the abutment members and the battery cell located in the accommodating chamber.

[0013] In one embodiment, the second mounting mechanism includes a mounting member, and the mounting member is located between two adjacent accommodating chambers.

[0014] In one possible implementation manner, the movement of the fixing member in a direction away from the mounting member can drive the two abutting members to approach each other, so that the abutting members placed in the accommodation chamber move in a direction away from the battery cell located in the accommodation chamber;

[0015] The movement of the fixing member toward the mounting member can drive the two abutting members to move away from each other, so that the abutting member disposed in the accommodation chamber moves toward the direction approaching the battery core located in the accommodation chamber.

[0016] In one possible implementation, the fixing member includes a wedge-shaped device, a side of the wedge-shaped device facing the abutment member is provided as a first inclined surface, and the first inclined surface is inclined from top to bottom in a direction away from the abutment member;

[0017] A side of the abutment member close to the fixing member is provided with a second inclined surface, and the second inclined surface is inclined from top to bottom in a direction close to the fixing member;

[0018] A side of the abutment member away from the fixing member is arranged as a plane in a vertical direction.

[0019] Beneficial technical effects of the utility model: According to the contents of the present disclosure, the layered battery pack is composed of a battery pack through the cooperation of a first mounting mechanism, a accommodating mechanism and a second mounting mechanism, which simplifies the process of preparing the battery pack, reduces the use of materials, reduces the preparation cost, and effectively improves the utilization rate of the space in the battery pack, thereby improving the installation efficiency and safety of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the accompanying drawings, the following are given by way of example and not limitation:

[0021] Figure 1 A perspective view of the overall unfolded structure is shown;

[0022] Figure 2 The main view of the overall unfolded structure is shown;

[0023] Figure 3 Shows a stereogram of the overall structure;

[0024] Figure 4 The cross-sectional front view of the overall structure is shown;

[0025] Figure 5 The main view of the overall internal structure is shown;

[0026] Figure 6 A top view of the liquid cooling mechanism structure is shown;

[0027] Figure 7 The front view of the liquid cooling mechanism structure is shown;

[0028] Figure 8 A bottom view of the frame structure is shown;

[0029] Fig. 9 A top view of the top cover structure is shown.

[0030] In the figure:

[0031] 100, battery pack; 200, battery cell;

[0032] 1. First mounting mechanism; 2. Accommodating mechanism; 3. Second mounting mechanism; 4. Connecting piece; 5. Insulating mechanism; 6. Fastening mechanism;

[0033] 11. cover body; 12. first mounting hole;

[0034] 21. frame; 22. limiting groove; 23. second mounting hole;

[0035] 31. Liquid cooling plate; 32. Mounting piece; 33. Limiting piece; 34. Third mounting hole;

[0036] 61. Abutment member; 62. Fixing member. DETAILED DESCRIPTION

[0037] In the following detailed disclosure, these embodiments are fully described with reference to the drawings. In order to make the technical scheme of the utility model more clear and specific to those skilled in the art, the implementation methods described below are not limited to this. The utility model is further described in detail below in combination with the embodiments and drawings.

[0038] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0039] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0040] The utility model provides a layered battery pack, such as Figure 1-Figure 9 As shown, the battery pack 100 includes a first mounting mechanism 1, a accommodating mechanism 2 and a second mounting mechanism 3. The first mounting mechanism 1 is arranged on one side of the accommodating mechanism 2, and the second mounting mechanism 3 is arranged on the other side of the accommodating mechanism 2. The first mounting mechanism 1, the accommodating mechanism 2 and the second mounting mechanism 3 form an accommodating cavity, which is used to accommodate the battery cell 200. The second mounting mechanism 3 includes a liquid cooling plate 31, which is in contact with the battery cell 200 to dissipate heat from the battery pack 100.

[0041] It can be understood that the battery pack 100 can be a battery pack 100 installed on an electric vehicle. The first mounting mechanism 1, the accommodating mechanism 2 and the second mounting mechanism 3 cooperate to form the battery pack 100, which simplifies the preparation process of the battery pack 100, reduces the use of materials, reduces the preparation cost, and effectively improves the space utilization rate in the battery pack 100, thereby improving the installation efficiency and safety of the battery pack 100.

[0042] It can be understood that the assembly method of the battery pack 100 provided in this embodiment simplifies the setting of the module compared with the battery pack of the three-level assembly mode of "battery cell-module-battery pack" in the related art, such as being able to save the steel belt, side plate and fasteners such as screws used to fix the module for assembling the module, reducing the use of auxiliary materials, which is conducive to cost saving, and making the assembly process of the entire battery pack 100 simple, saving the production costs such as manpower and material resources, and at the same time, being able to improve the volume utilization rate of the battery pack 100. In addition, due to the simplification of the module, the weight of the entire battery pack 100 is also reduced, and the mass energy density of the battery pack 100 is also improved, which greatly increases the economy of the battery pack 100 and is suitable for promotion and application.

[0043] In one possible implementation, Figure 1 , Figure 3 , Figure 8 and Fig. 9 As shown, the accommodating mechanism 2 includes a frame 21, and the first mounting mechanism 1 includes a cover 11, the cover 11 is covered on one side of the frame 21, and the liquid cooling plate 31 is covered on the other side of the frame 21, and the cover 11, the frame 21 and the liquid cooling plate 31 enclose a accommodating cavity.

[0044] It can be understood that the frame 21 is an open structure at both ends, the liquid cooling plate 31 is placed at the bottom opening of the frame 21, and the cover 11 is placed at the top opening of the frame 21. The frame 21 can enhance the overall structural strength of the battery pack 100 and improve the protection of the battery cell 200.

[0045] It can be understood that the temperature environment in the battery pack 100 has a great impact on the reliability, life and performance of the battery cell 200. The battery cell 200 in the receiving cavity is placed on the liquid cooling plate 31, which is used to support the battery cell 200 and dissipate heat for the battery pack 100. The battery cell 200 generates excess heat during operation, and the heat is transferred through the contact between the battery cell 200 and the surface of the liquid cooling plate 31. The liquid cooling plate 31 can be made of aluminum plate.

[0046] The frame 21 integrates the accommodating cavity formed by the combination of the end plate, steel belt, middle frame and limit block in the traditional module, which can directly encode the battery cell 200 and squeeze and fasten it through the fastening mechanism 6 to achieve the purpose of fixing the battery cell 200.

[0047] In one possible implementation, Figure 2 , Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, the liquid cooling plate 31 is provided with a raised limiting member 33 , and the frame 21 is provided with limiting grooves 22 corresponding to the limiting members 33 . When the liquid cooling plate 31 is connected to the frame 21 , the limiting member 33 is inserted into the limiting groove 22 .

[0048] It is understandable that the fixing methods of the limiter 33 include but are not limited to welding, riveting and stamping, and are set at the edge and / or the four corners. The limiter 33 is located on the upper surface of the liquid cooling plate 31 and protrudes toward the frame 21. The frame 21 is used to provide a limit groove 22 on the end surface that abuts against the liquid cooling plate 31. The limit groove 22 and the limiter 33 are set one by one. When the frame 21 is connected to the liquid cooling plate 31, the limiter 33 is inserted into the limit groove 22. The limiter 33 and the limit groove 22 are matched with a small gap, which further improves the stability between the frame 21 and the liquid cooling plate 31 and prevents the frame 21 and the liquid cooling plate 31 from relative displacement during the process of fixing the battery cell 200.

[0049] In one possible implementation, Figure 2-Figure 4 As shown, the first mounting mechanism 1 , the accommodating mechanism 2 and the second mounting mechanism 3 are connected via a connecting member 4 .

[0050] It can be understood that the first mounting mechanism 1 , the accommodating mechanism 2 and the second mounting mechanism 3 are detachably connected, that is, the cover body 11 , the frame body 21 and the liquid cooling plate 31 are detachably connected.

[0051] In one possible implementation, Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, a first mounting hole 12 is provided on the cover body 11, a second mounting hole 23 is provided on the frame body 21, a third mounting hole 34 is provided on the liquid cooling plate 31, and a connecting member 4 is passed through the first mounting hole 12 and the second mounting hole 23 and connected to the second mounting hole 23 to connect the cover body 11, the frame body 21 and the liquid cooling plate 31.

[0052] The connecting member 4 can be selected to be a fastening bolt. During installation, the end of the fastening bolt passes through the first mounting hole 12 on the cover body 11 and the second mounting hole 23 on the frame body 21 to be connected to the third mounting hole 34 on the liquid cooling plate 31. The first mounting hole 12, the second mounting hole 23 and the third mounting hole 34 can be provided with internal threads corresponding to the external threads of the fastening bolts, and the fastening bolts can also be locked by nuts. The first mounting mechanism 1, the accommodating mechanism 2 and the second mounting mechanism 3 are connected into a whole by the fastening bolts, and a accommodating cavity is formed for accommodating the battery cell 200.

[0053] It is understandable that the connector 4 is arranged along the edge area of ​​the battery pack 100, that is, the connector 4 is placed on the outer peripheral side of the frame 21, that is, the connector 4 is located outside the accommodating cavity, to improve the stability of the battery pack 100, and the connector 4 is preferably evenly arranged. The cover 11, the frame 21 and the liquid cooling plate 31 are connected by the same set of fastening bolts, and sealing strips are provided at the positions where they contact each other to improve the air tightness of the battery pack 100.

[0054] In one possible implementation, Figure 2 and Figure 5 As shown, the layered battery pack further includes an insulating mechanism 5, which is connected to the liquid cooling plate 31 / frame 21 and is used to fit with the battery cell 200, and the insulating mechanism 5 is placed in the accommodating cavity.

[0055] It can be understood that the insulating mechanism 5 is arranged between the battery cell 200 and the frame 21. The insulating mechanism 5 is used to fit the battery cell 200 to prevent leakage between the battery cell 200 and the frame 21, thereby improving the safety of the user's operations of fixing and removing the battery cell 200.

[0056] Furthermore, the insulating mechanism 5 is arranged on the liquid cooling plate 31, or the insulating mechanism 5 is arranged on the frame 21, and the fixing method of the insulating mechanism 5 includes but is not limited to structural adhesive, double-sided adhesive, and riveting. When the frame 21 and the liquid cooling plate 31 are connected, the insulating mechanism 5 is completely placed in the accommodating cavity, that is, the insulating mechanism 5 does not exceed the edge of the frame 21, and preferably the height of the insulating mechanism 5 is slightly lower than the height of the frame 21.

[0057] Furthermore, the insulating mechanism 5 includes an insulating plate. The insulating plate has a simple structure and is easy to process. The insulating plate can be fully fitted with the battery cell 200 to be sandwiched between the frame 21 and the battery cell 200 .

[0058] In one possible implementation, Figure 1 , Figure 2 and Figure 5 As shown, the accommodating cavity includes at least two accommodating chambers that are interconnected, and the accommodating chambers are used to accommodate the battery cells 200. A fastening mechanism 6 is provided between two adjacent accommodating chambers, and the fastening mechanism 6 can squeeze the battery cells 200 located in the accommodating chambers.

[0059] Among them, the fastening mechanism 6 includes an abutment 61 and a fixing member 62, the abutment 61 is symmetrically arranged on both sides of the fixing member 62, the battery cells 200 in the accommodating chamber are located on the side of the symmetrically arranged abutment 61 away from each other, the fixing member 62 can be movably clamped between the two symmetrically arranged abutment 61, and the fixing member 62 can move between the two abutment 61 to adjust the distance between the two abutment 61, so as to adjust the distance between the abutment 61 and the battery cells 200 located in the accommodating chamber.

[0060] It can be understood that the fastening mechanism 6 is located between the two receiving chambers, the abutment members 61 are arranged in pairs on both sides of the fixing member 62, and the battery cells 200 in the receiving chamber are located on the side of the abutment members 61 arranged in pairs away from each other. The abutment members 61, the fixing member 62 and the mounting member 32 are all located between the battery cells 200 in the two receiving chambers on both sides of the mounting member 32. Since the fixing member 62 is adapted to the abutment member 61 and can be movably clamped between the two abutment members 61 arranged in pairs, the fixing member 62 is movably connected to the mounting member 32. When the fixing member 62 moves in the direction close to the mounting member 32, the two abutment members 61 can be driven away from each other, thereby applying an extrusion force to the battery cells 200 in the two receiving chambers, and then when the fixing member 62 moves to a suitable position in the direction close to the mounting member 32, the battery cells 200 in each receiving chamber can be firmly and tightly squeezed and fixed, so as to achieve the fixation of the battery cells 200 and assemble into a battery pack 100.

[0061] In one possible implementation, Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the second mounting mechanism 3 includes a mounting member 32, and the mounting member 32 is located between two adjacent accommodating chambers.

[0062] It is understandable that a mounting member 32 is provided on the liquid cooling plate 31, and the mounting member 32 divides the accommodation cavity inside the box into accommodation chambers located on both sides of the mounting member 32, and the accommodation chambers provide installation space for the battery cells 200, so that the battery cells 200 can be grouped and accommodated in the battery pack 100. The fastening mechanism 6 is located above the mounting member 32 and between the two accommodation chambers, that is, the battery cells 200 accommodated in the two accommodation chambers on both sides of the mounting member 32 are distributed on both sides of the fastening mechanism 6.

[0063] The mounting member 32 may be located in the middle of the bottom of the box body, or may be located at a position of the bottom of the box body that deviates from the middle but is not at the edge. Thus, the mounting member 32 may be used to separate the inner bottom of the box body into receiving chambers located on both sides of the mounting member 32, so as to realize grouped installation of the battery cells 200 and facilitate clamping and fixing of the battery cells 200. Furthermore, the mounting member 32 is not connected to the cover 11, so that the receiving chambers are interconnected, providing installation space for the fastening mechanism 6 located between the receiving chambers.

[0064] Specifically, the height of the mounting member 32 is 10 mm to 25 mm. For example, if the height of the mounting member 32 is 10 mm, 15 mm, 20 mm, 25 mm or other heights, the height of the mounting member 32 can be reasonably set to ensure that the mounting member 32 has a good limiting effect on the insulating mechanism 5, and at the same time, provide sufficient installation and movement space for the fixing member 62, while saving box consumables and reducing manufacturing costs.

[0065] The number of the receiving chambers is at least two, and may be two, three, four or other integers, and the number of the mounting members 32 may be one, two, three or other integers. Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, when the liquid cooling plate 31 is in the middle position, it is ensured that the battery cells 200 accommodated in the accommodation chambers on both sides of the mounting member 32 are subjected to uniform force with the cooperation of the fixing members 62 and the abutment members 61, so that the battery cells 200 in the two mounting chambers can be reliably and stably fixed in their respective accommodation chambers at the same time with the cooperation of the same group of fixing members 62 and abutment members 61.

[0066] When the number of the mounting members 32 is at least two, at least two mounting members 32 are arranged in parallel. Such an arrangement can improve the uniformity of the force applied to the battery cells 200 in two adjacent receiving chambers, thereby ensuring that the battery cells 200 can be stably and reliably fixed in each receiving chamber.

[0067] Specifically, when there are two mounting members 32, the two mounting members 32 are arranged in parallel on the liquid cooling plate 31. The two mounting members 32 are used to divide the box into three approximately equal storage chambers. In this way, the fixing members 62 above each mounting member 32 cooperate with the abutment members 61 on both sides thereof, so that the battery cells 200 in the three storage chambers can be reliably and firmly fixed in their respective storage chambers, so as to fix the battery cells 200 and assemble them into a battery pack 100.

[0068] In one possible implementation, Figure 5 As shown, the movement of the fixing member 62 in the direction away from the mounting member 32 can drive the two abutting members 61 to approach each other, so that the abutting member 61 placed in the accommodating chamber moves in the direction away from the battery cell 200 located in the accommodating chamber; the movement of the fixing member 62 in the direction close to the mounting member 32 can drive the two abutting members 61 to move away from each other, so that the abutting member 61 placed in the accommodating chamber moves in the direction close to the battery cell 200 located in the accommodating chamber.

[0069] It can be understood that the movement of the fixing member 62 in the direction away from the mounting member 32 can drive the two abutment members 61 to approach each other, thereby releasing the squeezing force on the battery cells 200 in the two receiving chambers, so that the battery cells 200 can be loosely received in their respective receiving chambers, and then the position of the battery cells 200 can be fine-tuned or the battery cells 200 can be taken out of the box for replacement or repair, which is simple to operate and easy to use.

[0070] It can be understood that, by movably connecting the fixing member 62 with the mounting member 32 and matching the fixing member 62 with the abutment member 61, the fixing member 62 can move toward the mounting member 32, thereby reliably and firmly clamping and fixing the battery cell 200. By moving the fixing member 62 toward the direction away from the mounting member 32, the battery cell 200 can be loosely accommodated in the box to facilitate the disassembly of the battery cell 200. The structure is simple, and the disassembly and assembly operation is easy, so the battery cell 200 is suitable for popularization and application.

[0071] It can be understood that the fixing member 62 and the abutment member 61 are adapted to each other, and the fixing member 62 and the abutment member 61 can be adapted through an inclined surface. The inclined surface adaptation can change the direction of the force, thereby converting the vertical force of the fixing member 62 into the horizontal force of the abutment member 61. The structure is simple and easy to implement.

[0072] In one possible implementation, Figure 5 As shown, the fixing member 62 includes a wedge-shaped device, and the side of the wedge-shaped device facing the abutment member 61 is set as a first inclined surface, and the first inclined surface is inclined from top to bottom in a direction away from the abutment member 61; the side of the abutment member 61 close to the fixing member 62 is set as a second inclined surface, and the second inclined surface is inclined from top to bottom in a direction close to the fixing member 62; the side of the abutment member 61 away from the fixing member 62 is set as a plane in the vertical direction.

[0073] In some possible embodiments provided by the present invention, the fixing member 62 includes a wedge-shaped device, and the side of the wedge-shaped device facing the abutment member 61 is set as a first inclined surface, and the first inclined surface is set obliquely from top to bottom in a direction away from the abutment member 61. The abutment member 61 is a fixing plate, and the side of the fixing plate close to the fixing member 62 is set as a second inclined surface, and the second inclined surface is set obliquely from top to bottom in a direction close to the fixing member 62. Therefore, through the adaptation of the first inclined surface and the second inclined surface, the vertical force of the fixing member 62 can be converted into the horizontal force of the abutment member 61, so that the fixing member 62 moves in a direction close to the mounting member 32, which can drive the two abutment members 61 to move away from each other to squeeze the battery cell 200 located in the accommodation chamber, and when the fixing member 62 moves in a direction away from the mounting member 32, it can drive the two abutment members 61 to move closer to each other to release the squeezing force of the battery cell 200, wherein the inclined surface is easy to process and easy to realize, so that the processing cost of the fixing member 62 and the abutment member 61 is low, which is conducive to saving the cost of the battery pack 100 and improving the economy of the battery pack 100.

[0074] Among them, the side of the wedge device facing the abutment 61 is set as a first inclined surface, and along the direction from the accommodating chamber to the mounting member 32, the two sides of the wedge device are two first inclined surfaces. Since the first inclined surface of the wedge device is inclined from top to bottom away from the abutment 61, that is, along the direction from the accommodating chamber to the mounting member 32, the cross-section of the wedge device is roughly in the shape of an inverted triangle.

[0075] The side of the abutment 61 away from the fixing member 62 is set as a vertical plane, that is, the side of the abutment 61 adjacent to the battery cell 200 is set as a vertical plane. By utilizing the plane of the abutment 61, the efficiency of the force transmitted from the abutment 61 to the battery cell 200 can be improved in the horizontal direction, so that the battery cell 200 can move synchronously with the abutment 61 reliably and sensitively in the horizontal direction, thereby improving the fixing efficiency and disassembly efficiency of the battery cell 200.

[0076] Specifically, by providing a first fastening hole on the mounting member 32 and a second fastening hole on the fixing member 62, when the fixing member 62 and the mounting member 32 are detachably connected, the fastening mechanism 6 further includes a fastener, and the fastener passes through the second fastening hole and the first fastening hole to adjust the distance between the fixing member 62 and the mounting member 32. Thus, the fixing member 62 can be flexibly moved toward or away from the mounting member 32, and the connection and removal of the fixing member 62 and the mounting member 32 are facilitated, the structure is simple, and the operation is convenient, thereby adjusting the distance between the abutting members 61 arranged in pairs.

[0077] Among them, the number of fasteners is at least two, and at least two fasteners are arranged at intervals along the length direction of the mounting member 32. The at least two fasteners can ensure that the fixing member 62 moves relatively smoothly in the process of moving toward or away from the mounting member 32, thereby ensuring that the abutment member 61 can move relatively smoothly, reducing the possibility of the abutment member 61 being deflected, so as to drive the battery cell 200 to move smoothly.

[0078] Specifically, the fastener can be a bolt. By setting a corresponding thread on the first fastening hole, the fastener passes through the second fastening hole of the fixing member 62 and is connected with the first fastening hole of the mounting member 32. During the tightening process of the fastener, the distance between the fixing member 62 and the mounting member 32 can be adjusted, thereby pushing the abutment member 61 to move in a direction away from the mounting member 32.

[0079] The battery pack 100 includes a cover 11, a frame 21 and a liquid cooling plate 31. The limiting groove 22 of the frame 21 is buckled with the limiting piece 33 of the liquid cooling plate 31. The frame 21 is placed on the liquid cooling plate 31. The front and rear sections of the frame 21 are provided with an insulating mechanism 5 to ensure safety requirements. A mounting member 32 is provided in the middle of the liquid cooling plate 31. The battery cells 200 are placed in the receiving chambers on both sides of the mounting member 32 as required. The battery cells 200 are placed between the insulating mechanism 5 and the mounting member 32 of the liquid cooling plate 31. Then, abutment members 61 are arranged in pairs above the mounting member 32 to isolate the battery cells 200 in the two receiving chambers. The wedge-shaped device is inserted or embedded between the abutment members 61 arranged in pairs. The fastener passes through the second fastening hole of the wedge-shaped device and drives the wedge-shaped device to approach the mounting member 3. 2. When the fastener is screwed into the first fastening hole on the mounting member 32, the wedge-shaped device will continue to move toward the mounting member 32. During this process, the abutment 61 will give the battery cell 200 a lateral extrusion force, that is, it can drive the battery cell 200 to move in the direction away from the mounting member 32 and be extruded with the insulating mechanism 5. Therefore, when the wedge-shaped device moves to a suitable position toward the mounting member 32, the battery cell 200 can be reliably and firmly extruded and fixed on the frame 21 to achieve the fixation of the battery cell 200, saving the adhesive material between the abutment 62 and the battery cell 200. Finally, the cover body 11 is installed, and the fastening bolts are screwed in from top to bottom. The cover body 11 and the frame body 21 are fastened to the liquid cooling plate 31 to complete the fixation of the electric field package 100.

[0080] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0081] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0082] In view of the above detailed description, these and other changes can be made to these embodiments, and this written description includes the best mode embodiments to disclose the utility model. The scope of the patent obtained by the utility model is defined by the claims, and the claims are not limited by the content of the present disclosure. The protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the scope disclosed by the utility model, according to the technical solution and its concept of the utility model, makes equivalent replacement or change, which is within the protection scope of the utility model.

Claims

1. A layered battery pack, characterized in that: The invention comprises a first mounting mechanism (1), a accommodating mechanism (2) and a second mounting mechanism (3), wherein the first mounting mechanism (1) is arranged on one side of the accommodating mechanism (2), and the second mounting mechanism (3) is arranged on the other side of the accommodating mechanism (2); a accommodating cavity is formed between the first mounting mechanism (1), the accommodating mechanism (2) and the second mounting mechanism (3), and the accommodating cavity is used to accommodate a battery cell (200); the second mounting mechanism (3) comprises a liquid cooling plate (31), and the liquid cooling plate (31) is in contact with the battery cell (200) to dissipate heat from the battery pack.

2. The layered battery pack according to claim 1, characterized in that: The accommodating mechanism (2) comprises a frame (21), the first mounting mechanism (1) comprises a cover (11), the cover (11) is arranged on one side of the frame (21), the liquid cooling plate (31) is arranged on the other side of the frame (21), and the cover (11), the frame (21) and the liquid cooling plate (31) are enclosed to form the accommodating cavity.

3. The layered battery pack according to claim 2, characterized in that: The liquid cooling plate (31) is provided with a protruding limiting member (33), and the frame (21) is provided with a limiting groove (22) corresponding to the limiting member (33) one by one, and when the liquid cooling plate (31) is connected to the frame (21), the limiting member (33) is inserted into the limiting groove (22).

4. The layered battery pack according to claim 2, characterized in that: The first mounting mechanism (1), the accommodating mechanism (2) and the second mounting mechanism (3) are connected via a connecting member (4).

5. The layered battery pack according to claim 4, characterized in that: The cover body (11) is provided with a first mounting hole (12), the frame body (21) is provided with a second mounting hole (23), the liquid cooling plate (31) is provided with a third mounting hole (34), and the connecting member (4) is passed through the first mounting hole (12) and the second mounting hole (23) and is connected to the second mounting hole (23), so that the cover body (11), the frame body (21) and the liquid cooling plate (31) are connected.

6. The layered battery pack according to claim 2, characterized in that: The layered battery pack further comprises an insulating mechanism (5), the insulating mechanism (5) being connected to the liquid cooling plate (31) / the frame (21) and being used for being fitted with the battery cell (200), and the insulating mechanism (5) being placed in the accommodating cavity.

7. The layered battery pack according to any one of claims 1 to 6, characterized in that: The accommodating cavity comprises at least two accommodating chambers that are interconnected, the accommodating chambers being used to accommodate the battery cell (200), a fastening mechanism (6) being provided between two adjacent accommodating chambers, the fastening mechanism (6) being capable of squeezing the battery cell (200) located in the accommodating chamber; The fastening mechanism (6) comprises an abutment member (61) and a fixing member (62), wherein the abutment member (61) is symmetrically arranged on both sides of the fixing member (62), the battery cell (200) in the accommodation chamber is located on the side of the symmetrically arranged abutment members (61) away from each other, the fixing member (62) is movably clamped between the two symmetrically arranged abutment members (61), and the fixing member (62) can adjust the distance between the two abutment members (61) by moving between the two abutment members (61), so as to adjust the distance between the abutment member (61) and the battery cell (200) in the accommodation chamber.

8. The layered battery pack according to claim 7, characterized in that: The second mounting mechanism (3) comprises a mounting member (32), and the mounting member (32) is located between two adjacent accommodating chambers.

9. The layered battery pack according to claim 8, characterized in that: The movement of the fixing member (62) in a direction away from the mounting member (32) can drive the two abutting members (61) to move closer to each other, so that the abutting members (61) disposed in the accommodation chamber move in a direction away from the battery cell (200) located in the accommodation chamber; The movement of the fixing member (62) in a direction approaching the mounting member (32) can drive the two abutting members (61) to move away from each other, so that the abutting member (61) disposed in the accommodation chamber moves in a direction approaching the battery cell (200) located in the accommodation chamber.

10. The layered battery pack according to claim 9, characterized in that: The fixing member (62) comprises a wedge-shaped device, and a side of the wedge-shaped device facing the abutting member (61) is provided as a first inclined surface, and the first inclined surface is inclined from top to bottom in a direction away from the abutting member (61); A side of the abutment member (61) close to the fixing member (62) is provided as a second inclined surface, and the second inclined surface is inclined from top to bottom in a direction close to the fixing member (62); A side of the abutment member (61) away from the fixing member (62) is arranged as a plane in a vertical direction.

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