Semi-solid-state battery module

Abstract

The utility model discloses a semi-solid battery module which comprises a plurality of battery cell BLOCK modules, the plurality of battery cell BLOCK modules are stacked to form the module, end plates are arranged at two ends of a battery cell large surface side of the module, a fixed support and a side plate are sequentially arranged at two ends of a tab side of the module from inside to outside, and a convergence assembly and an FPC (flexible printed circuit) assembly used by the module are fixed on the fixed support. According to the semi-solid battery module disclosed by the utility model, a plurality of battery cell BLOCK modules can be stacked to form the module, so that the semi-solid battery module is convenient to assemble and form, the end plates and the side plates can be connected and fixed to provide extrusion force to the module, so that the expansion of the battery cells is limited, and the displacement is reduced; and the module is fixed on the fixed bracket, so that the space utilization rate of the module is improved, and the module is more compact.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-solid battery cores, in particular to a semi-solid battery module. Background Art

[0002] With the rapid development of the new energy battery industry, semi-solid batteries have become popular. However, most of the semi-solid battery modules under the existing technology are transformed from the module solutions of soft-pack batteries. The current module solutions cannot effectively reduce the impact of the expansion force of the semi-solid modules with higher expansion force. In addition, most of the semi-solid modules are arranged with lying batteries, which has low space utilization and high assembly cost. Utility Model Content

[0003] The purpose of the utility model is to provide a semi-solid battery module to overcome the deficiencies and defects of the prior art.

[0004] A semi-solid battery module comprises a plurality of cell BLOCK modules, wherein the plurality of cell BLOCK modules are stacked into a module, end plates are arranged at both ends of the cell large surface side of the module, fixed brackets and side plates are arranged in sequence from inside to outside at both ends of the tab side of the module, and a busbar assembly and an FPC assembly used in the module are fixed on the fixed bracket.

[0005] Optionally, a heat insulating pad which can be compressed and reset to have a buffering function is arranged between the end plate and the module.

[0006] Optionally, a busbar assembly is disposed below the fixing bracket, and an FPC assembly is disposed above the fixing bracket.

[0007] Optionally, a hole is opened at a predetermined position of the side panel, and the position of the hole corresponds to the tab of the battery cell BLOCK module, serving as a directional explosion-removal hole.

[0008] Optionally, a layer of insulating paper is attached to the outer side of the side panel to shield the opening on the outside.

[0009] Optionally, the inner side of the side panel is provided with a heat-pressed film having an insulating function.

[0010] Optionally, a top plate is provided on the top of the module and a bottom plate is provided on the bottom to surround and limit the module at the top and bottom, and the entire stacked module is framed by the combination of the top plate and the bottom plate.

[0011] Optionally, the battery cell BLOCK module includes at least one battery cell.

[0012] Optionally, the battery cell BLOCK module includes a pressing plate and a bracket cooperating with the pressing plate, and the pressing plate is clamped with the bracket to fix the at least one battery cell and the heat sink together to form a battery cell BLOCK module.

[0013] Optionally, when the battery cell BLOCK module includes two or more battery cells, a battery cell thermal insulation pad that can be compressed and reset to have a buffering function is arranged between the two battery cells.

[0014] The semi-solid battery module of the utility model can realize stacking of multiple battery cell BLOCK modules into a module, which is convenient for assembly and molding. By arranging end plates at both ends of the large surface side of the battery cell of the module, and arranging fixed brackets and side plates at both ends of the pole ear side of the module in sequence from the inside to the outside, the end plates and the side plates can be connected and fixed to provide an extrusion force on the module, thereby limiting the expansion of the battery cell and reducing displacement. At the same time, since the copper busbar and FPC assembly used in the module are placed on the side of the module and fixed on the fixed bracket, the space utilization rate of the module is improved and the module is made more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the appearance of the semi-solid battery module of the utility model.

[0016] Figure 2 It is an exploded view of the semi-solid battery module of the present invention.

[0017] Figure 3 It is an exploded view of a cell BLOCK module including two cells of the semi-solid battery module of the present invention.

[0018] Figure 4 It is an exploded view of a cell BLOCK module including a cell of the semi-solid battery module of the utility model.

[0019] In the figure:

[0020] 10. Insulation paper; 20. Side panel; 30. Busbar assembly; 40. Fixed bracket; 50. Top plate; 60. End plate; 70. Thermal insulation pad; 80. Cell BLOCK module; 90. Output socket; 100. Output socket protective cover; 110. Bottom plate; 120. FPC assembly, 130. Hot pressing film; 140. Opening; 801. Pressing plate; 802. Cell; 803. Bracket; 804. Heat sink; 805. Cell thermal insulation pad. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] like Figures 1 to 4As shown, the semi-solid battery module of the embodiment of the utility model includes a plurality of battery cell BLOCK modules 80, and the plurality of battery cell BLOCK modules are stacked into a module, and end plates 60 are arranged at both ends of the large surface side of the battery cell of the module, and fixed brackets 40 and side plates 20 are arranged in sequence from the inside to the outside at both ends of the ear side of the module; the busbar assembly 30 and the FPC assembly 120 are placed on the side of the semi-solid battery module and fixed on the fixed bracket 40.

[0023] The utility model stacks multiple cell BLOCK modules into a module, and the number of module stacking can be determined according to customer requirements, so that the number of stacking can be set according to needs, which is convenient for assembly and molding. After the cell BLOCK modules are stacked, an end plate 60 is added to both sides of the large surface of the cell, and the side plates 20 on both sides of the pole ear side provide extrusion force, thereby limiting the expansion of the cell and reducing displacement.

[0024] In an optional embodiment, a heat insulating pad 70 is arranged between the end plate 60 and the module. The arrangement of the heat insulating pad 70 can realize the heat insulating function and role of the battery, play the role of heat insulating the multiple battery cell BLOCK modules, and at the same time act as a buffer when the multiple battery cell BLOCK modules expand, have compressibility and can be reset, and the known heat insulating pad under the prior art can be used.

[0025] The utility model places the busbar assembly 30 (such as a copper busbar) and the FPC assembly 120 on the side of the semi-solid battery module and fixes them on a fixed bracket 40. Compared with the solution of placing the FPC assembly above the module, the space utilization of the module is improved and the module is made more compact.

[0026] The bus assembly 30 is fixed below the fixing bracket 40 , and the FPC assembly 120 is fixed above the fixing bracket 40 . The fixing bracket 40 is preferably made of a plastic bracket, and the end plate 60 is made of an aluminum plate or other high-strength materials.

[0027] In addition, since the top and bottom of the battery module after stacking are blocked by the heat sink on the cell BLOCK module, multiple openings 140 are made at predetermined positions of the side plate 20, and the position of each opening corresponds to the pole ear of the cell of the cell BLOCK module. The opening 140 serves as a directional explosion-proof hole, so that when the cell of the cell BLOCK module explodes, the gas will not be ejected from the upper and lower sides of the module, but can be ejected from the openings 140 of the side plate 20 on both sides of the pole ear. The side plate 20 is preferably an aluminum side plate.

[0028] In some embodiments, a layer of insulating paper 10 is attached to the outer side of the side plate for insulation, to shield or cover the opening 140, and not to block the gas from being ejected when the battery module explodes. Mica paper is preferably used. In some embodiments, a hot-pressed film 130 with insulating function is attached to the inner side of the side plate to insulate the side plate from the lug side of the module.

[0029] In some embodiments, a top plate 50 (such as an aluminum top plate) is provided on the top of the module, and a bottom plate 110 (such as an aluminum bottom plate) is provided on the bottom, so that the stacked modules are surrounded and limited at the top and bottom. The entire stacked module is framed by the combination of the top plate 50 and the bottom plate 110, thereby further reducing the impact of the expansion force.

[0030] In the present application, the top plate and the bottom plate are fixed to the module by glue, such as structural glue, and the end plate and the side plate are welded and then fixed by bolts. There are bolt holes at both ends of the end plate, and the two ends of the side plate form an L-shaped structure with bolt holes. The L-shaped structure with bolt holes is connected to the end plate and fixed with bolts after the bolt holes are opposite to each other.

[0031] In the present application, the battery cell BLOCK module may include two battery cells or one battery cell, and different battery cell BLOCK modules may be selected according to different needs of customers.

[0032] Figure 3 The cell BLOCK module with two cells is shown, and a cell heat insulation pad 805 is added between the two cells 802. The cell heat insulation pad 805 plays a role of heat insulation and acts as a buffer when the cell 802 expands. There is a heat sink 804 arranged outside one of the cells 802, such as an aluminum heat sink.

[0033] The above-mentioned cell BLOCK module includes a fixing part, including a pressing plate 801 and a bracket 803 matched with the pressing plate 801, the pressing plate 801 and the bracket 803 are fixed by a snap-fit ​​structure, the heat dissipation aluminum plate 804 is fixed to the bracket 803 by hot-melt columns arranged on the bracket 803, and the cell 802 is fixed to the heat dissipation aluminum plate 804 by bonding. A fixing part is arranged at each end of the cell BLOCK module to form a symmetrically arranged structure, which is used to clamp and fix the cell, aluminum heat dissipation plate and thermal insulation pad 805 of the cell BLOCK module.

[0034] The pressing plate 801 and the bracket 803 are fixed by a snap-fitting method, which is easy to operate. When assembling, the battery cell BLOCK module can be assembled with just one press.

[0035] Figure 4A battery BLOCK module with a battery cell is shown, including a battery cell and an aluminum heat sink, with fixing parts arranged at both ends, such as plastic parts, and the fixing parts include a pressing plate 801 and a bracket 803 cooperating with the pressing plate 801. A fixing part is arranged at each end of the battery BLOCK module to form a symmetrically arranged structure, which is used to clamp and fix the battery cell of the battery BLOCK module and the aluminum heat sink to form a single-cell battery BLOCK module.

[0036] In one embodiment, the semi-solid battery module of the present application further includes an output seat 90 for outputting voltage, wherein the output seat 90 is connected to the output end of the bus assembly 30, and the output seat 90 is fixed to the end plate 60 via a snap-fit ​​structure at the bottom. Furthermore, the output seat 90 is provided with an output seat protective cover 100, and the output seat protective cover 100 is fixed to the output seat 90 via a snap-fit ​​structure.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model.

[0038] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A semi-solid battery module, characterized in that: It comprises a plurality of battery cell BLOCK modules, which are stacked into a module, end plates are arranged at both ends of the large surface side of the battery cell of the module, fixed brackets and side plates are arranged in sequence from inside to outside at both ends of the ear side of the module, and the busbar assembly and FPC assembly used by the module are fixed on the fixed bracket.

2. The semi-solid battery module according to claim 1, characterized in that: A heat insulation pad which can be compressed and reset to have a buffering function is arranged between the end plate and the module.

3. The semi-solid battery module according to claim 1, characterized in that: A busbar assembly is arranged below the fixing bracket, and an FPC assembly is arranged above the fixing bracket.

4. The semi-solid battery module according to claim 1, characterized in that: The side plate is provided with a hole at a predetermined position, and the position of the hole corresponds to the tab of the battery cell BLOCK module, serving as a directional explosion-removal hole.

5. The semi-solid battery module according to claim 4, characterized in that: A layer of insulating paper is attached to the outer side of the side plate to shield the opening on the outer side.

6. The semi-solid battery module according to claim 1, characterized in that: The inner side of the side plate is provided with a heat-pressed film with an insulating function.

7. The semi-solid battery module according to claim 1, characterized in that: A top plate is arranged on the top of the module, and a bottom plate is arranged on the bottom, so as to surround and limit the module at the top and bottom. The entire stacked module is framed by combining the top plate and the bottom plate.

8. The semi-solid battery module according to claim 1, characterized in that: The battery cell BLOCK module includes at least one battery cell.

9. The semi-solid battery module according to claim 8, characterized in that: The battery cell BLOCK module includes a pressing plate and a bracket matched with the pressing plate, and the pressing plate is clamped with the bracket to fix the at least one battery cell and the heat sink together to form a battery cell BLOCK module.

10. The semi-solid battery module according to claim 9, characterized in that: When the battery cell BLOCK module includes two or more battery cells, a battery cell heat insulation pad which can be compressed and reset to have a buffering function is arranged between the two battery cells.

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