A bare cell, a bare cell module and a vehicle chassis

Abstract

The utility model provides a kind of bare cell and bare cell module and vehicle chassis, including the bare cell body of the appearance structure is square, cylindrical or blade shape;The bare cell body of square or blade shape is formed using lamination or winding mode;The bare cell body of cylindrical is wound into;It further includes positive pole piece, negative pole piece or full pole column being set on the bare cell body upwards or downwards and explosion-proof valve being at the bottom or upper portion of the bare cell body;A kind of bare cell module includes square bare cell module corresponding with the bare cell body of square shape, cylindrical bare cell module corresponding with the bare cell body of cylindrical or blade bare cell module corresponding with the bare cell body of blade shape;The bare cell module structure of the application can significantly save space, reduce cost, and ensure the consistency of product, and is not restricted by the number of cells.

Description

[Technical Field]

[0001] This utility model relates to the field of new energy battery pack cell technology with different shapes and structures, and in particular to a bare cell, bare cell module and vehicle chassis that can effectively improve manufacturing efficiency and enhance operational reliability. [Background Technology]

[0002] With the increasing global awareness of environmental protection, new energy vehicles are becoming more and more popular as a means of green travel. In terms of specific application effects, compared with traditional vehicles, new energy vehicles not only get rid of dependence on oil, but also have the advantages of no polluting gas emissions during use and protecting the urban environment. At present, China's new energy vehicles are mainly lithium-ion battery vehicles, while fuel cells, lithium metal batteries and other forms of new energy batteries are also being developed.

[0003] As the application of batteries becomes increasingly widespread, the requirements for manufacturing processes and production efficiency of battery packs and new energy chassis are also constantly increasing. However, the existing battery pack manufacturing process is generally quite complex and inefficient, requiring processes such as cell winding, casing, BMS connection, wiring, debugging, and functional testing. After the battery pack is assembled, a series of routine tests are generally required to ensure the quality and performance of the product. These tests cover key aspects such as charge and discharge, internal resistance measurement, capacity testing, overcharge and over-discharge testing, short circuit testing, and overcurrent protection. When there are many individual battery packs, the cost will increase significantly, and if a fault occurs during subsequent application, the repair will also be quite complex and costly.

[0004] For example, the utility model patent with application number CN202121792904.4 and patent title "A Novel Automotive Lithium Battery Pack" specifically discloses a novel automotive lithium battery pack, including a battery box. The battery box includes an upper cover, a lower shell, a battery module, and a battery management system (BMS). The upper cover and the lower shell are detachably connected. An explosion-proof valve is provided on the right outer wall of the lower shell, and a main positive high-voltage connector and a main negative high-voltage connector are sequentially provided on the left outer wall. A communication connector is provided between the main positive high-voltage connector and the main negative high-voltage connector. The battery module is matched and installed inside the lower shell. A BMS bracket is provided on the left side of the battery module, and the BMS is installed on the BMS bracket. An insulating plate is provided on the top of the battery module, and an EVA sponge heat insulation pad is provided on the bottom. A pressure strip is provided above the insulating plate. This utility model is easy to assemble and disassemble, the battery module has a simple structure, good versatility, short charging time, large energy storage capacity, simple assembly process, no pollution to the environment, and is green and environmentally friendly. The battery box is lightweight, has high energy density, good cycle life, and is safe and reliable.

[0005] To better address the problems existing in current technologies, it is necessary to start from multiple aspects such as the preparation and structural design of battery cells and packs, and combine them with related heat dissipation and pressure relief components to improve the production efficiency and operational stability of products, and reduce manufacturing costs. [Utility Model Content]

[0006] The problem with the prior art that this application addresses is:

[0007] Existing battery pack manufacturing processes are generally complex and inefficient, requiring cell winding, casing, BMS connection, wiring, debugging, and functional testing. After battery pack assembly, a series of routine tests are usually required to ensure product quality and performance. These tests cover key aspects such as charge and discharge, internal resistance measurement, capacity testing, overcharge and over-discharge testing, short circuit testing, and overcurrent protection. When there are many individual battery packs, the cost will increase significantly, and if a fault occurs during subsequent application, repair will be quite complex and costly.

[0008] The solution to the technical problem of this utility model is:

[0009] A bare battery cell is provided, comprising a bare battery cell body with a square, cylindrical, or blade-shaped external structure; the square or blade-shaped bare battery cell body is formed by stacking or winding; the cylindrical bare battery cell body is formed by winding; and further comprising a positive electrode plate, a negative electrode plate, or a full electrode post disposed on the bare battery cell body facing upward or downward, and an explosion-proof valve located at the bottom or top of the bare battery cell body.

[0010] A bare battery cell module includes a square bare battery cell module corresponding to the square-shaped bare battery cell body, a cylindrical bare battery cell module corresponding to the cylindrical bare battery cell body, or a blade-shaped bare battery cell module corresponding to the blade-shaped bare battery cell body.

[0011] The square bare battery cell module includes square bare battery cells, a multi-functional housing formed by injection molding or casting, a bottom water channel cover plate disposed at the bottom of the multi-functional housing, and a top cover plate disposed at the top of the multi-functional housing; the multi-functional housing has a plurality of battery cell placement compartments arranged in a matrix for placing the square bare battery cells; the top cover plate matches the top shape of each square bare battery cell, and the top cover plate has electrode connection holes for exposing the positive electrode plate and the negative electrode plate respectively; it also includes a heat dissipation water flow channel disposed inside the multi-functional housing; the ends of the multi-functional housing are respectively provided with water inlets and water outlets; the water inlets and water outlets are connected to the heat dissipation water flow channel;

[0012] The cylindrical bare battery cell module includes cylindrical bare batteries, a multi-functional housing formed by injection molding or casting, a bottom water channel cover plate disposed at the bottom of the multi-functional housing, and a top cover plate disposed at the top of the multi-functional housing; the multi-functional housing has a plurality of battery cell placement compartments arranged in a matrix for placing the cylindrical bare batteries; the top cover plate matches the top shape of each cylindrical bare battery cell, and each top cover plate has a terminal connection hole for exposing the full terminal post; it also includes a heat dissipation water flow channel disposed inside the multi-functional housing; the ends of the multi-functional housing are respectively provided with water inlets and water outlets; the water inlets and water outlets are connected to the heat dissipation water flow channel; the battery cell placement compartments have a honeycomb structure;

[0013] The blade-shaped bare battery cell module includes a blade-shaped bare battery cell, a multi-functional housing formed by injection molding or casting, a battery cell front cover plate disposed at the front end of the multi-functional housing, and a battery cell rear cover plate disposed at the rear end of the multi-functional housing; a plurality of battery cell placement compartments for placing the blade-shaped bare battery cells are sequentially opened in the multi-functional housing; the battery cell front cover plate and the battery cell rear cover plate are shaped to match the two ends of each blade-shaped bare battery cell, effectively improving the anti-breakage performance of the blade-shaped bare battery cell, and electrode connection holes for exposing the positive electrode plate and the negative electrode plate are opened on the battery cell front cover plate or the battery cell rear cover plate; it also includes a heat dissipation water flow channel disposed inside the multi-functional housing; the battery cell front cover plate and the battery cell rear cover plate are respectively provided with a water inlet and a water outlet; the water inlet and the water outlet are connected to the heat dissipation water flow channel.

[0014] Preferably, the heat dissipation water flow channel includes a side water flow channel and a bottom water flow channel; the side water flow channels are sequentially spaced between adjacent groups of square bare battery cells; the bottom of the multi-functional enclosure is also provided with multiple pressure relief channels; each pressure relief channel corresponds to the position of multiple square bare battery cells in the same group; and the explosion-proof valve corresponds to the position of the pressure relief channel; the bottom water flow channel is spaced apart from each adjacent pressure relief channel.

[0015] Preferably, the cell placement compartments of the multifunctional enclosure are opened in the X and Y directions; and the number of cell placement compartments in the X direction ranges from 1 to 468; the number of cell placement compartments in the Y direction ranges from 1 to 468; the number of square bare cells in the multifunctional enclosure ranges from 1 to 468; and the number connected in series ranges from 1 to 468, and the number connected in parallel ranges from 2 to 32.

[0016] Preferably, the length of the multifunctional housing ranges from 1200 to 1600 mm, and the height ranges from 180 to 250 mm. When the cells are connected in series, the positive electrode of the square bare cell corresponds to the negative electrode of its adjacent square bare cell. When the cells are connected in parallel, the positive electrode of the square bare cell corresponds to the positive electrode of its adjacent square bare cell, and the negative electrode of the square bare cell corresponds to the negative electrode of its adjacent square bare cell.

[0017] Preferably, the heat dissipation water flow channel includes a side water flow channel and a bottom water flow channel; the side water flow channel matches the shape of the honeycomb-shaped battery cell placement compartment to form a flow channel structure similar to a corrugated cardboard shell; the bottom of the multifunctional box is also provided with multiple pressure relief channels; each pressure relief channel corresponds to the position of multiple cylindrical bare battery cells in the same group; and the explosion-proof valve corresponds to the position of the pressure relief channel; the bottom water flow channel is spaced apart from each adjacent pressure relief channel.

[0018] Preferably, the battery cell placement compartments of the multifunctional housing are densely arranged in a honeycomb structure, including an X-direction arrangement and a Y-direction arrangement inclined at a preset angle to the X-direction; the number of battery cell placement compartments in the X-direction ranges from 1 to 468; the number of battery cell placement compartments in the Y-direction ranges from 1 to 468; the number of cylindrical bare battery cells in the multifunctional housing ranges from 1 to 468; the number connected in series ranges from 1 to 468, and the number connected in parallel ranges from 2 to 32; the water inlet and water outlet on the outside of the multifunctional housing are respectively connected to the X-direction battery cell placement compartments in the Nth row and the N+2th row, so that the liquid flows smoothly in the flow channel structure.

[0019] Preferably, the heat dissipation water flow channel includes a side water flow channel and a bottom water flow channel; the side water flow channels are sequentially spaced between adjacent groups of bare blade cells; the bottom of the multi-functional enclosure is also provided with multiple pressure relief channels; each pressure relief channel corresponds one-to-one with the position of the bare blade cell; and the explosion-proof valve corresponds to the position of the pressure relief channel; the bottom water flow channel is spaced apart from each adjacent pressure relief channel.

[0020] Preferably, the cell placement compartment of the multifunctional housing is designed with a spring clip structure, forming a multifunctional elastic interlayer and a spring clip-type water flow channel; it also includes heat insulation pads disposed between adjacent bare blade cells; the number of explosion-proof valves at the bottom of the bare blade cells ranges from 1 to 5, and the spacing is equal; the length of the multifunctional housing ranges from 1200-1600mm; the height ranges from 180-250mm; grooves penetrating the top of the bare blade cells are formed on two large surfaces of the bare cell body, and locking blocks are inserted into the corresponding two grooves between two adjacent bare blade cells; the bare blade cells are also provided with fixing members for vertically limiting the bare blade cells; the fixing members are used for detachable connection with the multifunctional housing; the locking blocks are interference-fitted with the grooves.

[0021] A vehicle chassis includes a bare battery cell module as described above, a chassis main frame, and a module mounting position disposed inside the chassis main frame for placing the bare battery cell module. The module mounting position is provided with a water flow connector communicating with the water inlet and the water outlet, and a pressure relief connector communicating with the pressure relief channel. It also includes a battery control system for electrically controlling the connection with the bare battery cell module. The battery control system includes a battery circuit breaker unit and a battery system interface. The battery circuit breaker unit is detachably connected to the chassis main frame crossbeam and connected in series with multiple bare battery cell modules to turn the vehicle power battery system on or off to output electrical energy. The battery control system interface is integrated within the battery circuit breaker unit for outputting high-voltage current and low-voltage signals.

[0022] The technical effects achieved by this application in solving the technical problem are as follows:

[0023] Compared with the prior art, the present invention provides a bare battery cell, a bare battery cell module, and a vehicle chassis by using a bare battery cell body with a square, cylindrical, or blade-shaped external structure; the square or blade-shaped bare battery cell body is formed by stacking or winding; the cylindrical bare battery cell body is formed by winding; and it also includes a positive electrode plate, a negative electrode plate, or a full electrode post arranged upward or downward on the bare battery cell body, as well as an explosion-proof valve located at the bottom or top of the bare battery cell body. This can significantly save space, reduce costs, ensure product consistency, and is not limited by the number of battery cells. [Image Description]

[0024] Figure 1 This is a schematic diagram of the exploded state structure of a square-structured bare battery cell module according to this utility model.

[0025] Figure 2 This is a schematic diagram of the exploded state structure of a cylindrical bare battery cell module according to this utility model.

[0026] Figure 3 This is a schematic diagram of the exploded state structure of a bare battery cell module with a blade structure according to this utility model.

[0027] Figure 4 This is a schematic diagram of the vehicle chassis in an exploded state, corresponding to a cylindrical bare battery cell module of this utility model.

[0028] Figure 5 This is a schematic diagram of the exploded state structure of a vehicle chassis corresponding to a square-structured bare battery cell module of this utility model.

[0029] Figure 6 This is a schematic diagram of the vehicle chassis in an exploded state, corresponding to a bare battery cell module with a blade structure according to this utility model. [Detailed Implementation]

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0035] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] Please see Figures 1 to 6This utility model discloses a bare battery cell comprising a bare battery cell body with a square, cylindrical, or blade-shaped external structure; the square or blade-shaped bare battery cell body is formed by stacking or winding; the cylindrical bare battery cell body is formed by winding; it also includes a positive electrode plate, a negative electrode plate, or a full electrode post disposed on the bare battery cell body facing upward or downward, and an explosion-proof valve located at the bottom or top of the bare battery cell body.

[0038] A bare battery cell module includes a square bare battery cell module corresponding to the square-shaped bare battery cell body, a cylindrical bare battery cell module 12 corresponding to the cylindrical bare battery cell body, or a blade-shaped bare battery cell module 32 corresponding to the blade-shaped bare battery cell body.

[0039] The square bare battery cell module includes square bare battery cells, a multi-functional housing formed by injection molding or casting, a bottom water channel cover plate disposed at the bottom of the multi-functional housing, and a top cover plate disposed at the top of the multi-functional housing; the multi-functional housing has a plurality of battery cell placement compartments arranged in a matrix for placing the square bare battery cells; the top cover plate matches the top shape of each square bare battery cell, and the top cover plate has electrode connection holes for exposing the positive electrode plate and the negative electrode plate respectively; it also includes a heat dissipation water flow channel disposed inside the multi-functional housing; the ends of the multi-functional housing are respectively provided with water inlets and water outlets; the water inlets and water outlets are connected to the heat dissipation water flow channel;

[0040] The cylindrical bare battery cell module 12 includes cylindrical bare battery cells 11, a multi-functional housing 123 formed by injection molding or casting, a bottom water channel cover 122 disposed at the bottom of the multi-functional housing 123, and an upper cover 121 disposed at the top of the multi-functional housing 123; the multi-functional housing 123 has a plurality of cell placement compartments arranged in a matrix for placing the cylindrical bare battery cells 11; the upper cover 121 matches the top shape of each cylindrical bare battery cell 11, and each upper cover 121 has a terminal connection hole for exposing the full terminal; it also includes a heat dissipation water flow channel disposed inside the multi-functional housing 123; the ends of the multi-functional housing 123 are respectively provided with water inlets and water outlets; the water inlets and water outlets are connected to the heat dissipation water flow channel; the cell placement compartments have a honeycomb structure.

[0041] The blade-shaped bare battery cell module 32 includes a blade bare battery cell 31, a multi-functional housing 322 formed by injection molding or casting, a battery cell front cover plate 321 disposed at the front end of the multi-functional housing 322, and a battery cell rear cover plate disposed at the rear end of the multi-functional housing 322; a plurality of battery cell placement compartments for placing the blade bare battery cells 31 are sequentially opened in the multi-functional housing 322; the battery cell front cover plate 321 and the battery cell rear cover plate are shaped to match the two ends of each blade bare battery cell 31, effectively improving the anti-breakage performance of the blade bare battery cell, and electrode connection holes for exposing the positive electrode plate and the negative electrode plate are opened on the battery cell front cover plate 321 or the battery cell rear cover plate; it also includes a heat dissipation water flow channel disposed inside the multi-functional housing 322; the battery cell front cover plate 321 and the battery cell rear cover plate are respectively provided with a water inlet and a water outlet; the water inlet and the water outlet are connected to the heat dissipation water flow channel.

[0042] By employing bare cell bodies with square, cylindrical, or blade-shaped external structures; the square or blade-shaped bare cell bodies are formed by stacking or winding; the cylindrical bare cell bodies are formed by winding; and the bare cell bodies also include positive electrode plates, negative electrode plates, or full poles arranged upwards or downwards on the bare cell bodies, as well as explosion-proof valves located at the bottom or top of the bare cell bodies, space can be significantly saved, costs reduced, and product consistency ensured, without being constrained by the number of cells.

[0043] In some other embodiments, the heat dissipation water flow channel includes a side water flow channel and a bottom water flow channel; the side water flow channels are sequentially spaced between adjacent groups of square bare battery cells; the bottom of the multi-functional enclosure is also provided with multiple pressure relief channels; each pressure relief channel corresponds to the position of multiple square bare battery cells in the same group; and the explosion-proof valve corresponds to the position of the pressure relief channel; the bottom water flow channel is spaced apart from each adjacent pressure relief channel.

[0044] The cell placement compartments of the multifunctional enclosure are opened in the X and Y directions; the number of cell placement compartments in the X direction ranges from 1 to 468; the number of cell placement compartments in the Y direction ranges from 1 to 468; the number of square bare cells in the multifunctional enclosure ranges from 1 to 468; the number connected in series ranges from 1 to 468; and the number connected in parallel ranges from 2 to 32.

[0045] The length of the multifunctional enclosure ranges from 1200 to 1600 mm; the height ranges from 180 to 250 mm. When the enclosure is connected in series, the positive electrode of the square bare cell corresponds to the negative electrode of its adjacent square bare cell. When the enclosure is connected in parallel, the positive electrode of the square bare cell corresponds to the positive electrode of its adjacent square bare cell, and the negative electrode of the square bare cell corresponds to the negative electrode of its adjacent square bare cell.

[0046] The heat dissipation water flow channel includes a side water flow channel and a bottom water flow channel; the side water flow channel matches the shape of the honeycomb-shaped battery cell placement compartment to form a flow channel structure similar to a corrugated cardboard shell; the bottom of the multi-functional box is also provided with multiple pressure relief channels; each pressure relief channel corresponds to the position of multiple cylindrical bare battery cells in the same group; and the explosion-proof valve corresponds to the position of the pressure relief channel; the bottom water flow channel is spaced apart from each adjacent pressure relief channel.

[0047] The battery cell placement compartments of the multifunctional housing are densely arranged in a honeycomb structure, including an X-direction arrangement and a Y-direction arrangement inclined at a preset angle to the X-direction; the number of battery cell placement compartments in the X-direction ranges from 1 to 468; the number of battery cell placement compartments in the Y-direction ranges from 1 to 468; the number of cylindrical bare battery cells 11 in the multifunctional housing ranges from 1 to 468; the number connected in series ranges from 1 to 468; and the number connected in parallel ranges from 2 to 32; the water inlet and water outlet on the outside of the multifunctional housing are respectively connected to the X-direction battery cell placement compartments in the Nth row and the N+2th row, so that the liquid can flow smoothly in the flow channel structure.

[0048] The heat dissipation water flow channel includes a side water flow channel and a bottom water flow channel; the side water flow channels are sequentially spaced between adjacent groups of bare blade cells 31; the bottom of the multi-functional enclosure is also provided with multiple pressure relief channels; each pressure relief channel corresponds one-to-one with the position of the bare blade cell 31; and the explosion-proof valve corresponds to the position of the pressure relief channel; the bottom water flow channel is spaced apart from each adjacent pressure relief channel.

[0049] The battery cell placement compartment of the multifunctional housing is designed with a spring clip structure, forming a multifunctional elastic interlayer and a spring clip-type water flow channel; it also includes heat insulation pads disposed between each adjacent bare blade battery cell 31; the number of explosion-proof valves at the bottom of the bare blade battery cell 31 ranges from 1 to 5, and the spacing is equal; the length of the multifunctional housing 322 ranges from 1200-1600mm; the height ranges from 180-250mm; grooves penetrating the top of the bare blade battery cell 31 are provided on two large surfaces of the bare battery cell body, and locking blocks are inserted into the corresponding two grooves between two adjacent bare blade battery cells 31; the bare blade battery cell 31 is also provided with a fixing member for vertically limiting the bare blade battery cell; the fixing member is used for detachable connection with the multifunctional housing 322; the locking block is interference-fitted with the groove.

[0050] A vehicle chassis includes a bare battery cell module as described above, a chassis main frame 13, and a module mounting position 131 disposed inside the chassis main frame 13 for placing the bare battery cell module. The module mounting position 131 is provided with a water flow connector communicating with the water inlet and the water outlet, and a pressure relief connector communicating with the pressure relief dedicated channel. It also includes a battery control system for electrically controlling the connection with the bare battery cell module. The battery control system includes a battery circuit breaker unit and a battery system interface. The battery circuit breaker unit is detachably connected to the chassis main frame crossbeam and connected in series with multiple bare battery cell modules to turn on or off the output of electrical energy from the vehicle power battery system. The battery control system interface is integrated in the battery circuit breaker unit for outputting high-voltage current and low-voltage signals.

[0051] The technical effects achieved by this application in solving the technical problem are as follows:

[0052] Compared with the prior art, the present invention provides a bare battery cell, a bare battery cell module, and a vehicle chassis 1. By adopting a bare battery cell body with a square, cylindrical, or blade-shaped external structure, the square or blade-shaped bare battery cell body is formed by stacking or winding; the cylindrical bare battery cell body is formed by winding; and it also includes a positive electrode plate, a negative electrode plate, or a full electrode post arranged upward or downward on the bare battery cell body, as well as an explosion-proof valve located at the bottom or top of the bare battery cell body. This can significantly save space, reduce costs, ensure product consistency, and is not limited by the number of battery cells.

[0053] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A bare battery cell, characterized in that: It includes a bare cell body with a square, cylindrical, or blade-shaped external structure; the square or blade-shaped bare cell body is formed by stacking or winding; the cylindrical bare cell body is wound; it also includes a positive electrode plate, a negative electrode plate, or a full electrode post arranged upward or downward on the bare cell body, and an explosion-proof valve located at the bottom or top of the bare cell body.

2. A bare battery cell module, characterized in that: This includes a square bare cell module corresponding to the square-shaped bare cell body in claim 1, a cylindrical bare cell module corresponding to the cylindrical bare cell body in claim 1, or a blade-shaped bare cell module corresponding to the blade-shaped bare cell body in claim 1. The square bare battery cell module includes square bare batteries, an insulated multi-functional housing formed by injection molding or casting, a bottom water channel cover plate disposed at the bottom of the multi-functional housing, and a top cover plate disposed at the top of the multi-functional housing; the multi-functional housing has a plurality of battery cell placement compartments arranged in a matrix for placing the square bare batteries; the top cover plate matches the top shape of each square bare battery cell, and the top cover plate has electrode connection holes for exposing the positive electrode plate and the negative electrode plate respectively; it also includes a heat dissipation water flow channel disposed inside the multi-functional housing; the ends of the multi-functional housing are respectively provided with water inlet and water outlet; the water inlet and the water outlet are connected to the heat dissipation water flow channel; The cylindrical bare battery cell module includes cylindrical bare batteries, an insulated multi-functional housing formed by injection molding or casting, a bottom water channel cover plate disposed at the bottom of the multi-functional housing, and a top cover plate disposed at the top of the multi-functional housing; the multi-functional housing has a plurality of battery cell placement compartments arranged in a matrix for placing the cylindrical bare batteries; the top cover plate matches the top shape of each cylindrical bare battery cell, and each top cover plate has a terminal connection hole for exposing the full terminal post; it also includes a heat dissipation water flow channel disposed inside the multi-functional housing; the ends of the multi-functional housing are respectively provided with water inlets and water outlets; the water inlets and water outlets are connected to the heat dissipation water flow channel; the battery cell placement compartments have a honeycomb structure; The blade-shaped bare battery cell module includes a blade-shaped bare battery cell, an insulated multi-functional housing formed by injection molding or casting, a battery cell front cover plate disposed at the front end of the multi-functional housing, and a battery cell rear cover plate disposed at the rear end of the multi-functional housing; a plurality of battery cell placement compartments for placing the blade-shaped bare battery cells are sequentially opened in the multi-functional housing; the battery cell front cover plate and the battery cell rear cover plate are shaped to match the two ends of each blade-shaped bare battery cell, effectively improving the anti-breakage performance of the blade-shaped bare battery cell, and electrode connection holes for exposing the positive electrode plate and the negative electrode plate are opened on the battery cell front cover plate or the battery cell rear cover plate; it also includes a heat dissipation water flow channel disposed inside the multi-functional housing; the battery cell front cover plate and the battery cell rear cover plate are respectively provided with a water inlet and a water outlet; the water inlet and the water outlet are connected to the heat dissipation water flow channel.

3. A bare cell module as described in claim 2, characterized in that: The heat dissipation water flow channel includes a side water flow channel and a bottom water flow channel; the side water flow channels are sequentially spaced between adjacent groups of square bare battery cells; the bottom of the multi-functional enclosure is also provided with multiple pressure relief channels; each pressure relief channel corresponds to the position of multiple square bare battery cells in the same group; it also includes explosion-proof valves corresponding to the positions of the pressure relief channels; the bottom water flow channels are spaced apart from each adjacent pressure relief channel.

4. A bare cell module as described in claim 3, characterized in that: The cell placement compartments of the multifunctional enclosure are opened in the X and Y directions; the number of cell placement compartments in the X direction ranges from 1 to 468; the number of cell placement compartments in the Y direction ranges from 1 to 468; the number of square bare cells in the multifunctional enclosure ranges from 1 to 468; the number connected in series ranges from 1 to 468; and the number connected in parallel ranges from 2 to 32.

5. A bare cell module as described in claim 4, characterized in that: The length of the multifunctional enclosure ranges from 1200 to 1600 mm; the height ranges from 180 to 250 mm. When the enclosure is connected in series, the positive electrode of the square bare cell corresponds to the negative electrode of its adjacent square bare cell. When the enclosure is connected in parallel, the positive electrode of the square bare cell corresponds to the positive electrode of its adjacent square bare cell, and the negative electrode of the square bare cell corresponds to the negative electrode of its adjacent square bare cell.

6. A bare cell module as described in claim 2, characterized in that: The heat dissipation water flow channel includes a side water flow channel and a bottom water flow channel; the side water flow channel matches the shape of the honeycomb-shaped battery cell placement compartment to form a flow channel structure similar to a corrugated cardboard shell; the bottom of the multi-functional box is also provided with multiple pressure relief channels; each pressure relief channel corresponds to the position of multiple cylindrical bare battery cells in the same group; it also includes explosion-proof valves corresponding to the positions of the pressure relief channels; the bottom water flow channel is spaced apart from each adjacent pressure relief channel.

7. A bare cell module as described in claim 6, characterized in that: The battery cell placement compartments of the multifunctional housing are densely arranged in a honeycomb structure, including an X-direction arrangement and a Y-direction arrangement inclined at a preset angle to the X-direction; the number of battery cell placement compartments in the X-direction ranges from 1 to 468; the number of battery cell placement compartments in the Y-direction ranges from 1 to 468; the number of cylindrical bare battery cells in the multifunctional housing ranges from 1 to 468; the number connected in series ranges from 1 to 468; and the number connected in parallel ranges from 2 to 32; the water inlet and water outlet on the outside of the multifunctional housing are respectively connected to the X-direction battery cell placement compartments in the Nth and N+2th rows, allowing the liquid to flow smoothly in the flow channel structure.

8. A bare cell module as described in claim 2, characterized in that: The heat dissipation water flow channel includes a side water flow channel and a bottom water flow channel; the side water flow channels are sequentially spaced between adjacent groups of bare blade cells; the bottom of the multi-functional enclosure is also provided with multiple pressure relief channels; each pressure relief channel corresponds to a position of a bare blade cell; it also includes explosion-proof valves corresponding to the positions of the pressure relief channels; the bottom water flow channels are spaced apart from each adjacent pressure relief channel.

9. A bare cell module as described in claim 8, characterized in that: The battery cell placement compartment of the multifunctional housing is designed with a spring clip structure, forming a multifunctional elastic interlayer and a spring clip-type water flow channel; it also includes heat insulation pads disposed between adjacent bare blade batteries; the number of explosion-proof valves at the bottom of the bare blade batteries ranges from 1 to 5, and the spacing is equal; the length of the multifunctional housing ranges from 1200-1600mm; the height ranges from 180-250mm; grooves penetrating the top of the bare blade battery are formed on two large surfaces of the bare battery body, and locking blocks are inserted into the corresponding two grooves between two adjacent bare blade batteries; the bare blade battery is also provided with a fixing member for vertically limiting the bare blade battery; the fixing member is used for detachable connection with the multifunctional housing; the locking block is interference-fitted with the groove.

10. A vehicle chassis, characterized in that: The system includes the bare cell module as described in claim 2, a chassis main frame, and a module mounting position disposed inside the chassis main frame for placing the bare cell module; the module mounting position is provided with a water flow connector connected to the water inlet and the water outlet, and a pressure relief connector connected to a dedicated pressure relief channel; it also includes a battery control system for electrically controlling the connection with the bare cell module; the battery control system includes a battery circuit breaker unit and a battery system interface; the battery circuit breaker unit is detachably connected to the chassis main frame crossbeam and connected in series with multiple bare cell modules for turning on or off the output of electrical energy from the vehicle power battery system; the battery control system interface is integrated within the battery circuit breaker unit for outputting high-voltage current and low-voltage signals.

Images