Quickly disassembled power battery

Abstract

The application relates to a quick dismounting power battery, which comprises a battery box, a battery pack and a locking assembly, the battery pack comprises a plurality of first battery monomers and a plurality of second battery monomers, the plurality of first battery monomers are clamped in the battery box, the plurality of second battery monomers are slidably connected with the battery box along the width direction of the battery box, when the plurality of second battery monomers slide to a first position, the projection of the plurality of first battery monomers and the plurality of second battery monomers along the length direction of the battery box is completely overlapped, when the plurality of second battery monomers slide to a second position, the projection of the plurality of first battery monomers and the plurality of second battery monomers along the length direction of the battery box is partially overlapped; the locking assembly is detachably connected with the battery box; the existing battery pack is embedded in the shell, and the battery pack is not easy to take out; meanwhile, the plurality of battery monomers in the battery pack are fixedly connected, so that the dismounting work of the battery monomers is time-consuming and laborious.

Description

Technical Field

[0001] This invention relates to the field of power battery technology, and in particular to a power battery that can be quickly installed and removed. Background Technology

[0002] Currently, multiple battery cells in a power battery pack are connected by copper busbars or leads to achieve electrical connection between the multiple battery cells.

[0003] For example, the utility model patent with application number CN202023161933.9 proposes a fixing unit for a battery pack copper busbar and a battery module. In this case, a fixing unit for a battery pack copper busbar is used to be stacked with the cell unit in the battery module along the length direction. The fixing unit has a through-passage through which the copper busbar can be passed to place the copper busbar. The through-passage extends along the width direction of the battery module and is constructed as a longitudinal passage that allows the copper busbar to be placed vertically.

[0004] When existing power batteries are used for secondary applications, the battery pack must first be removed from the power battery pack, and the individual battery cells in the battery pack must be separated and tested to screen out the battery cells that meet the secondary application standards.

[0005] However, existing battery packs are embedded in the casing, making them difficult to remove. In addition, the multiple battery cells in the battery pack are fixedly connected, making it time-consuming and laborious to disassemble the battery cells. Summary of the Invention

[0006] In view of this, it is necessary to provide a power battery that can be quickly disassembled and assembled to solve the problems of existing battery packs being embedded in the casing and difficult to remove, and the fixed connection between multiple battery cells in the battery pack, which makes the disassembly of the battery cells time-consuming and laborious.

[0007] This invention provides a quick-assembly and disassembly power battery, including a battery box, a battery pack, and a locking assembly. The battery pack includes multiple first battery cells and multiple second battery cells. The multiple first battery cells and multiple second battery cells are arranged alternately along the length of the battery box. The multiple first battery cells are snapped into the battery box. The multiple second battery cells are slidably connected to the battery box along the width of the battery box and can slide to a first position and a second position. When the multiple second battery cells slide to the first position, the projections of the multiple first battery cells and the multiple second battery cells along the length of the battery box completely overlap, and adjacent first battery cells and second battery cells are electrically connected. When the multiple second battery cells slide to the second position, the projections of the multiple first battery cells and the multiple second battery cells along the length of the battery box partially overlap, and adjacent first battery cells and second battery cells are disconnected. The locking assembly is detachably connected to the battery box to lock the multiple second battery cells in the first position.

[0008] Furthermore, the current direction inside the plurality of first battery cells is the same as the width direction of the battery box, the current direction inside the plurality of second battery cells is the same as the width direction of the battery box, and the current direction inside the first battery cells is opposite to the current direction inside the second battery cells.

[0009] Furthermore, a connecting block is installed at the positive terminal of both the first battery cell and the second battery cell, and a connecting post is installed at the negative terminal of both the first battery cell and the second battery cell. The current flow direction inside the first battery cell and the second battery cell is set so that the connecting block points to the connecting post. When multiple second battery cells slide to the first position, the connecting block abuts against the adjacent connecting post. When multiple second battery cells slide to the second position, the connecting block is spaced apart from the adjacent connecting post.

[0010] Furthermore, the connecting block has a conical groove, and the end of the connecting post near the connecting block is conical, so that the connecting post can be fitted into the conical groove.

[0011] Furthermore, the battery box includes a box body and a box cover, which are detachably connected.

[0012] Furthermore, the inner bottom wall of the box is provided with multiple slots corresponding to the multiple first battery cells 5, and the multiple first battery cells are inserted into the corresponding slots. The inner top wall of the box cover is provided with multiple guide grooves corresponding to the multiple second battery cells 5, and the multiple second battery cells are slidably connected to the corresponding guide grooves.

[0013] Furthermore, the inner bottom wall of the housing is also provided with a plurality of sliding parts corresponding one-to-one with a plurality of the second battery cells. The bottom of each of the plurality of sliding parts is slidably connected to the housing, and the top of each of the plurality of sliding parts has a snap-fit ​​station. The bottom of the second battery cell snaps into the snap-fit ​​station of the corresponding sliding part.

[0014] Furthermore, the sliding component includes a sliding plate and two clamping plates. The bottom of the sliding plate is slidably connected to a groove opened in the inner bottom wall of the box, and the top of the sliding plate is fixedly connected to the two clamping plates, forming the snap-fit ​​station between the two clamping plates.

[0015] 5. Furthermore, a plurality of second battery cells are disposed between the two first battery cells that are furthest apart.

[0016] Furthermore, the locking assembly includes a connecting plate and a top block. The connecting plate is detachably connected to an opening in the side wall of the battery compartment, and one side of the top block is fixed to the connecting plate.

[0017] The top block is fixedly connected, with the other side extending through the opening into the interior of the battery box and abutting against a plurality of second battery cells to lock the plurality of second battery cells in a first position.

[0018] Compared with existing technologies, when this power battery needs to be reused in a tiered manner, the battery box is first disassembled. At this time, multiple second battery cells inside are in the first position, and the adjacent first batteries...

[0019] The first and second battery cells are electrically connected. By removing the locking assembly, multiple second battery cells can slide to the second position. Adjacent first and second battery cells are disconnected. By sliding multiple second battery cells, the separation of multiple first and second battery cells can be achieved, replacing the traditional fixed connection between multiple battery cells. The separation work is time-saving and labor-saving. At the same time, when multiple second battery cells slide to the second position, the projections of multiple first and second battery cells along the length of the battery pack overlap. The space between adjacent first and second battery cells and between second battery cells provides operating space for removing the first and second battery cells, making the removal of the battery pack extremely convenient. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of a power battery that can be quickly disassembled and assembled according to an embodiment of the present invention;

[0021] Figure 2A schematic diagram of a power battery with multiple first battery cells and multiple second battery cells in a first position, provided in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of a power battery with multiple first battery cells and multiple second battery cells in a second position, provided in an embodiment of the present invention;

[0023] Figure 4 The power battery provided in the embodiments of the present invention for quick assembly and disassembly Figure 2 Enlarged diagram of section A in the middle;

[0024] Figure 5 A schematic diagram of the internal structure of the casing in a power battery that can be quickly disassembled and assembled according to an embodiment of the present invention;

[0025] Figure 6 The power battery provided in the embodiments of the present invention for quick assembly and disassembly Figure 5 Sectional view of plane AA;

[0026] Figure 7 The power battery provided in the embodiments of the present invention for quick assembly and disassembly Figure 5 Sectional view of the middle BB plane;

[0027] Figure 8 A schematic diagram of the internal structure of the quick-release and detachable power battery casing cover provided in an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the electrical connection between adjacent first and second battery cells in a power battery that can be quickly disassembled and assembled according to an embodiment of the present invention. Detailed Implementation

[0029] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0030] like Figure 1-3As shown, the present invention provides a quick-assembly and disassembly power battery, including a battery box 100, a battery pack 200, and a locking assembly 300. The battery pack 200 includes a plurality of first battery cells 210 and a plurality of second battery cells 220. The plurality of first battery cells 210 and the plurality of second battery cells 220 are arranged alternately along the length direction of the battery box 100. The plurality of first battery cells 210 are snapped into the battery box 100, and the plurality of second battery cells 220 are slidably connected to the battery box 100 along the width direction of the battery box 100 and can slide to a first position and a second position. When the plurality of second battery cells 220 slide... When moved to the first position, the projections of multiple first battery cells 210 and multiple second battery cells 220 along the length of the battery box 100 completely overlap, and adjacent first battery cells 210 and second battery cells 220 are electrically connected. When the multiple second battery cells 220 slide to the second position, the projections of multiple first battery cells 210 and multiple second battery cells 220 along the length of the battery box 100 partially overlap, and adjacent first battery cells 210 and second battery cells 220 are disconnected. The locking assembly 300 is detachably connected to the battery box 100 to lock the multiple second battery cells 220 in the first position.

[0031] In practice, when the power battery needs to be reused, the battery box 100 is first disassembled. At this time, the multiple second battery cells 220 inside are in the first position, and the adjacent first battery cells 210 and second battery cells 220 are electrically connected. The locking component 300 is removed, and the multiple second battery cells 220 can be slid to the second position. The adjacent first battery cells 210 and second battery cells 220 are disconnected. By sliding the multiple second battery cells 220, the disassembly of the multiple first battery cells 210 and second battery cells 220 can be achieved, replacing the traditional fixed connection between multiple battery cells. The disassembly work is time-saving and labor-saving. At the same time, when the multiple second battery cells 220 slide to the second position, the projections of the multiple first battery cells 210 and the multiple second battery cells 220 along the length direction of the battery box 100 overlap. The space between two adjacent first battery cells 210 and the space between the second battery cells 220 provides operating space for removing the first battery cells 210 and the second battery cells 220, making the removal of the battery pack 200 extremely convenient.

[0032] In this embodiment, the battery box 100 is used to carry the battery pack 200.

[0033] In one embodiment, the battery box 100 includes a box body 110 and a box cover 120, which are detachably connected to facilitate the assembly and disassembly of the battery pack 200.

[0034] The battery pack 200 in this embodiment includes a plurality of first battery cells 210 and a plurality of second battery cells 220. The first battery cells 210 and the second battery cells 220 are structures that can be conceived by those skilled in the art and will not be described or explained in detail here. The aforementioned multiple first battery cells 210 and multiple second battery cells 220 are the structures required for the subsequent cascade utilization of batteries. In order to facilitate the disassembly and assembly process, the multiple first battery cells 210 and multiple second battery cells 220 are arranged alternately along the length direction of the battery box 100. The multiple first battery cells 210 are embedded in the battery box 100, and the multiple second battery cells 220 are slidably connected to the battery box 100 along the width direction and can slide to a first position and a second position. When the multiple second battery cells 220 slide to the first position, the projections of the multiple first battery cells 210 and the multiple second battery cells 220 along the length direction of the battery box 100 completely overlap, and adjacent first battery cells 210 and second battery cells 220 are electrically connected. When the multiple second battery cells 220 slide to the second position, the projections of the multiple first battery cells 210 and the multiple second battery cells 220 along the length direction of the battery box 100 partially overlap, and adjacent first battery cells 210 and second battery cells 220 are disconnected.

[0035] like Figure 2-3 As shown, the current direction inside the plurality of first battery cells 210 is the same as the width direction of the battery box 100, the current direction inside the plurality of second battery cells 220 is the same as the width direction of the battery box 100, the current direction inside the first battery cell 210 is opposite to the current direction inside the second battery cell, and the plurality of first battery cells 210 and the plurality of second battery cells 220 are electrically connected sequentially along the length direction of the battery box 100.

[0036] To achieve electrical connection between adjacent first battery cells 210 and second battery cells 220, in one embodiment, a connecting block 230 is installed at the positive terminal of both the first battery cell 210 and the second battery cell 220, and a connecting post 240 is installed at the negative terminal of both the first battery cell 210 and the second battery cell 220. The current flow direction inside the first battery cell 210 and the second battery cell 220 is set in the direction from the connecting block 230 to the connecting post 240. When multiple second battery cells 220 slide to the first position, the connecting block 230 abuts against the adjacent connecting post 240. When multiple second battery cells 220 slide to the second position, the connecting block 230 and the adjacent connecting post 240 are spaced apart.

[0037] Among them, the connecting block 230 and the connecting block 230 are conductive structures, for example, made of copper.

[0038] like Figure 4As shown, in order to ensure a stable connection between the connecting block 230 and the connecting post 240 and to prevent the connecting block 230 and the connecting post 240 from separating under external interference (such as vibration) and affecting the normal operation of the battery pack 200, in one embodiment, a tapered groove 231 is provided on the connecting block 230, and the end of the connecting post 240 near the connecting block 230 is tapered, so that the connecting post 240 can be fitted into the tapered groove 231.

[0039] like Figure 5 , Figure 6 and Figure 8 As shown, in order to enable multiple first battery cells 210 to be embedded in the battery box 100 and multiple second battery cells 220 to be slidably connected to the battery box 100 along the width direction of the battery box 100, in one embodiment, the inner bottom wall of the box body 110 is provided with multiple slots 111 corresponding to the multiple first battery cells 210, and the multiple first battery cells 210 are embedded in the corresponding slots 111. The inner top wall of the box cover 120 is provided with multiple guide grooves 121 corresponding to the multiple second battery cells 220, and the multiple second battery cells 220 are slidably connected to the corresponding guide grooves 121.

[0040] It should be noted that, in order to improve the stability of the battery pack 200 and effectively utilize its internal space, in this embodiment, any adjacent first battery cell 210 and second battery cell 220 should be arranged in close contact. When the first battery cell 210 and second battery cell 220 are arranged in this manner, interference will occur if the slot 111 and guide groove 121 are located on the same surface. In this embodiment, the slot 111 and guide groove 121 are respectively located on the housing 110 and the cover 120 to solve the above problem. It is understood that the slot 111 and guide groove 121 can also be respectively located on the cover 120 and the housing 110, and this embodiment does not limit this.

[0041] like Figure 7 As shown, to facilitate the movement of multiple second battery cells 220, in one embodiment, the inner bottom wall of the housing 110 is further provided with multiple sliding members 112 corresponding to each of the multiple second battery cells 220. The bottom of each sliding member 112 is slidably connected to the housing 110, and the top of each sliding member 112 has a snap-fit ​​position. The bottom of the second battery cell 220 snaps into the snap-fit ​​position of the corresponding sliding member 112. The sliding member 112 includes a sliding plate 112a and two clamping plates 112c. The bottom of the sliding plate 112a is slidably connected to a groove 112b formed in the inner bottom wall of the housing 110, and the top of the sliding plate 112a is fixedly connected to the two clamping plates 112c, forming a snap-fit ​​position between the two clamping plates 112c.

[0042] After the first battery cell 210 and the second battery cell 220 are installed in the manner described above, the vertical heights of the first battery cell 210 and the second battery cell 220 are different, such as... Figure 9 As shown, the problem of electrical connection between the first battery cell 210 and the second battery cell 220 can be solved by the inclined connecting block 230.

[0043] In this embodiment, the plurality of second battery cells 220 are disposed between the two first battery cells 210 with the largest distance, and the positive and negative terminals of the two first battery cells 210 with the largest distance are connected to external electrical devices.

[0044] In this embodiment, the battery box 100 is detachably connected to lock the plurality of second battery cells 220 in the first position.

[0045] In one embodiment, the locking assembly 300 includes a connecting plate and a top block. The connecting plate is detachably connected to an opening on the side wall of the battery box 100. One side of the top block is fixedly connected to the connecting plate, and the other side of the top block can extend through the opening into the interior of the battery box 100 and abut against a plurality of second battery cells 220 to lock the plurality of second battery cells 220 in a first position.

[0046] Compared with existing technologies: When the power battery needs to be reused, the battery box 100 is first disassembled. At this time, the multiple second battery cells 220 inside are in the first position. The adjacent first battery cells 210 and second battery cells 220 are electrically connected. The locking component 300 is removed, and the multiple second battery cells 220 can be slid to the second position. The adjacent first battery cells 210 and second battery cells 220 are disconnected. By sliding the multiple second battery cells 220, the disassembly of the multiple first battery cells 210 and second battery cells 220 can be achieved, replacing the traditional fixed connection between multiple battery cells. The disassembly work is time-saving and labor-saving. At the same time, when the multiple second battery cells 220 slide to the second position, the projections of the multiple first battery cells 210 and the multiple second battery cells 220 along the length direction of the battery box 100 overlap. The space between two adjacent first battery cells 210 and the space between the second battery cells 220 provides operating space for removing the first battery cells 210 and the second battery cells 220, making the removal of the battery pack 200 extremely convenient.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A quick-assembly and disassembly power battery, characterized in that, Includes battery box, battery pack, and locking components; The battery pack includes multiple first battery cells and multiple second battery cells. The multiple first battery cells and multiple second battery cells are arranged alternately along the length of the battery box. The multiple first battery cells are snapped into the battery box. The multiple second battery cells are slidably connected to the battery box along the width of the battery box and can slide to a first position and a second position. When the multiple second battery cells slide to the first position, the projections of the multiple first battery cells and the multiple second battery cells along the length of the battery box completely overlap, and adjacent first battery cells and second battery cells are electrically connected. When the multiple second battery cells slide to the second position, the projections of the multiple first battery cells and the multiple second battery cells along the length of the battery box partially overlap, and adjacent first battery cells and second battery cells are disconnected. The locking assembly is detachably connected to the battery box to lock multiple second battery cells in the first position.

2. The quick-release power battery according to claim 1, characterized in that, The current direction inside the plurality of first battery cells is the same as the width direction of the battery box, the current direction inside the plurality of second battery cells is the same as the width direction of the battery box, and the current direction inside the first battery cells is opposite to the current direction inside the second battery cells.

3. The quick-release power battery according to claim 2, characterized in that, Both the positive terminals of the first and second battery cells are equipped with connecting blocks, and both the negative terminals of the first and second battery cells are equipped with connecting posts. The internal current flow direction of the first and second battery cells is set so that the connecting blocks point towards the connecting posts. When multiple second battery cells slide to the first position, the connecting blocks abut against the adjacent connecting posts. When multiple second battery cells slide to the second position, the connecting blocks are spaced apart from the adjacent connecting posts.

4. The quick-release power battery according to claim 3, characterized in that, The connecting block has a conical groove, and the end of the connecting post near the connecting block is conical, so that the connecting post can be inserted into the conical groove.

5. The quick-release power battery according to claim 1, characterized in that, The battery box includes a box body and a box cover, which are detachably connected.

6. The quick-release power battery according to claim 5, characterized in that, The inner bottom wall of the box has multiple slots corresponding to the multiple first battery cells, and the multiple first battery cells are inserted into the corresponding slots. The inner top wall of the box cover has multiple guide grooves corresponding to the multiple second battery cells, and the multiple second battery cells are slidably connected to the corresponding guide grooves.

7. The quick-release power battery according to claim 6, characterized in that, The inner bottom wall of the housing is also provided with a plurality of sliding parts corresponding one-to-one with a plurality of second battery cells. The bottom of each of the plurality of sliding parts is slidably connected to the housing, and the top of each of the plurality of sliding parts has a snap-fit ​​station. The bottom of the second battery cell snaps into the snap-fit ​​station of the corresponding sliding part.

8. The quick-release power battery according to claim 7, characterized in that, The sliding component includes a sliding plate and two clamping plates. The bottom of the sliding plate is slidably connected to a groove opened in the inner bottom wall of the box, and the top of the sliding plate is fixedly connected to the two clamping plates, forming the snap-fit ​​station between the two clamping plates.

9. The quick-release power battery according to claim 1, characterized in that, Multiple second battery cells are positioned between the two first battery cells that are furthest apart.

10. The quick-release power battery according to claim 1, characterized in that, The locking assembly includes a connecting plate and a top block. The connecting plate is detachably connected to an opening on the side wall of the battery box. One side of the top block is fixedly connected to the connecting plate. The other side of the top block can pass through the opening and extend into the interior of the battery box and abut against a plurality of second battery cells to lock the plurality of second battery cells in a first position.

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