A firewall structure applied to a single cell module

Abstract

The utility model provides a kind of applied to the firewall structure of single electric core module, including the fireproof wall baffle being arranged in the inside of multifunctional electric core box;Firewall baffle limiting slot for limiting the baffle limiting slot of the fireproof wall baffle is opened in the inside of multifunctional electric core box;The both ends of the fireproof wall baffle are engaged in corresponding baffle limiting slot;Two bare electric core bodies adjacent are separated by the fireproof wall baffle;A plurality of fireproof wall baffles are spaced apart;It further includes the side water flow channel being arranged in the both sides of the fireproof wall baffle and the bottom water flow channel and pressure relief special channel at the bottom of the fireproof wall baffle, in practical application, can play better fireproof, explosion-proof protection effect.

Description

[Technical Field]

[0001] This utility model relates to the field of battery pack cell technology for new energy vehicles, and in particular to a firewall structure for single-cell modules that can effectively improve manufacturing efficiency, enhance operational reliability, and provide high safety performance. [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 related operational safety, heat dissipation, and pressure relief components to improve product production efficiency, operational stability, 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 firewall structure for a single-cell module is provided, including a firewall baffle disposed inside a multifunctional cell housing; a baffle limiting groove for limiting the firewall baffle is formed inside the multifunctional cell housing; both ends of the firewall baffle are engaged in the corresponding baffle limiting grooves; two adjacent bare cell bodies are separated from each other by the firewall baffle; multiple firewall baffles are spaced apart from each other; and it also includes side water flow channels disposed on both sides of the firewall baffle, a bottom water flow channel and a pressure relief channel at the bottom of the firewall baffle.

[0010] Preferably, the two ends of the multifunctional battery cell housing are respectively provided with a water inlet and a water outlet; the water inlet and the water outlet are connected to the side water flow channel and the bottom water flow channel.

[0011] Preferably, an explosion-proof valve is provided at the bottom of the bare battery cell body; the explosion-proof valve corresponds to the position of the pressure relief channel.

[0012] Preferably, the bare cell body is formed by stacking or winding; it also includes a positive terminal and a negative terminal disposed on the bare cell body; adjacent positive terminals or negative terminals are electrically connected by laser welding.

[0013] Preferably, the cell placement compartments of the multifunctional cell housing 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.

[0014] Preferably, the number of bare battery cells in the multifunctional battery cell housing is 1-468; and the number connected in series is 1-468, and the number connected in parallel is 2-32.

[0015] Preferably, the length of the multifunctional battery cell housing ranges from 1200 to 1600 mm; the height ranges from 180 to 250 mm; when grouped in series, the positive terminal of the bare battery cell body corresponds to the negative terminal of its adjacent bare battery cell body; when grouped in parallel, the positive terminal of the bare battery cell body corresponds to the positive terminal of its adjacent bare battery cell body, and the negative terminal of the bare battery cell body corresponds to the negative terminal of its adjacent bare battery cell body.

[0016] Preferably, insulating strong magnets are also provided on both sides of the bare cell body; the insulating strong magnets include strong magnet sheets and thermally conductive silicone pads; the thermally conductive silicone pads wrap the strong magnet sheets; the insulating strong magnets are in the shape of annular sheets, including circular annular, rectangular annular or elliptical annular; the insulating strong magnets are connected to the bare cell body by adhesive or riveting.

[0017] The technical effects achieved by this application in solving the technical problem are as follows:

[0018] Compared with the prior art, the firewall structure of this utility model applied to a single-cell module adopts a firewall baffle set inside the multifunctional cell box; a baffle limiting groove for limiting the firewall baffle is opened inside the multifunctional cell box; the two ends of the firewall baffle are engaged in the corresponding baffle limiting groove; two adjacent bare cell bodies are separated from each other by the firewall baffle; multiple firewall baffles are arranged at intervals; it also includes side water flow channels set on both sides of the firewall baffle and bottom water flow channel and pressure relief channel at the bottom of the firewall baffle. In practical applications, it can better improve the fireproof and explosion-proof protection effect of the cell module product. [Image Description]

[0019] Figure 1 This is a front view structural diagram of a firewall structure applied to a single-cell module according to this utility model.

[0020] Figure 2 This is a schematic diagram of the exploded state structure of a battery cell module corresponding to a firewall structure applied to a single battery cell module according to this utility model. [Detailed Implementation]

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Please see Figure 1 and Figure 2 This utility model discloses a firewall structure 1 for a single-cell module, comprising a firewall baffle disposed inside a multifunctional cell housing; a baffle limiting groove for limiting the firewall baffle is provided inside the multifunctional cell housing; the two ends of the firewall baffle are engaged in the corresponding baffle limiting grooves; two adjacent bare cell bodies are separated from each other by the firewall baffle; multiple firewall baffles are spaced apart from each other; and it also includes side water flow channels disposed on both sides of the firewall baffle, a bottom water flow channel and a pressure relief channel at the bottom of the firewall baffle.

[0029] In some other embodiments, the two ends of the multifunctional battery cell housing are respectively provided with a water inlet and a water outlet; the water inlet and the water outlet are connected to the side water flow channel and the bottom water flow channel.

[0030] An explosion-proof valve is installed at the bottom of the bare battery cell body; the explosion-proof valve corresponds to the position of the pressure relief channel.

[0031] The bare cell body is formed by stacking or winding; it also includes a positive terminal and a negative terminal disposed on the bare cell body; adjacent positive terminals or negative terminals are electrically connected by laser welding.

[0032] The cell placement compartments of the multifunctional cell box 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.

[0033] The number of bare battery cells in the multifunctional battery cell housing is 1-468; the number connected in series is 1-468, and the number connected in parallel is 2-32.

[0034] The length of the multifunctional battery cell housing ranges from 1200 to 1600 mm; the height ranges from 180 to 250 mm. When the cells are connected in series, the positive terminal of the bare battery cell corresponds to the negative terminal of its adjacent bare battery cell. When the cells are connected in parallel, the positive terminal of the bare battery cell corresponds to the positive terminal of its adjacent bare battery cell, and the negative terminal of the bare battery cell corresponds to the negative terminal of its adjacent bare battery cell.

[0035] Insulating strong magnets are also provided on both sides of the bare cell body; the insulating strong magnets include strong magnet sheets and thermally conductive silicone pads; the thermally conductive silicone pads wrap the strong magnet sheets; the insulating strong magnets are in the shape of ring sheets, including circular rings, rectangular rings or elliptical rings; the insulating strong magnets are connected to the bare cell body by adhesive or riveting.

[0036] The technical effects achieved by this application in solving the technical problem are as follows:

[0037] Compared with the prior art, the firewall structure 1 of this utility model applied to a single-cell module adopts a firewall baffle set inside the multifunctional cell box; a baffle limiting groove for limiting the firewall baffle is opened inside the multifunctional cell box; the two ends of the firewall baffle are engaged in the corresponding baffle limiting groove; two adjacent bare cell bodies are separated from each other by the firewall baffle; multiple firewall baffles are arranged at intervals; it also includes side water flow channels set on both sides of the firewall baffle and bottom water flow channel and pressure relief channel at the bottom of the firewall baffle. In practical applications, it can better improve the fireproof and explosion-proof protection effect of the cell module product.

[0038] 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 firewall structure applied to a single-cell module, characterized in that: The device includes a firewall baffle disposed inside an insulated multifunctional battery cell housing; a baffle limiting groove is provided inside the multifunctional battery cell housing to limit the firewall baffle; both ends of the firewall baffle are engaged in the corresponding baffle limiting grooves; two adjacent bare battery cell bodies are separated from each other by the firewall baffle; multiple firewall baffles are spaced apart from each other; and it also includes side water flow channels disposed on both sides of the firewall baffle, as well as a bottom water flow channel and a pressure relief channel at the bottom of the firewall baffle.

2. The firewall structure applied to a single-cell module as described in claim 1, characterized in that: The multifunctional battery cell housing has an inlet and an outlet at each end; the inlet and outlet are connected to the side water flow channel and the bottom water flow channel.

3. The firewall structure applied to a single-cell module as described in claim 1, characterized in that: An explosion-proof valve is installed at the bottom of the bare battery cell body; the explosion-proof valve corresponds to the position of the pressure relief channel.

4. A firewall structure applied to a single-cell module as described in any one of claims 1 to 3, characterized in that: The bare cell body is formed by stacking or winding; it also includes a positive terminal and a negative terminal disposed on the bare cell body; adjacent positive terminals or negative terminals are electrically connected by laser welding.

5. A firewall structure applied to a single-cell module as described in claim 1, characterized in that: The cell placement compartments of the multifunctional cell box 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.

6. A firewall structure applied to a single-cell module as described in claim 5, characterized in that: The number of bare battery cells in the multifunctional battery cell housing is 1-468; the number connected in series is 1-468, and the number connected in parallel is 2-32.

7. A firewall structure applied to a single-cell module as described in claim 4, characterized in that: The length of the multifunctional battery cell housing ranges from 1200 to 1600 mm; the height ranges from 180 to 250 mm. When the cells are connected in series, the positive terminal of the bare battery cell corresponds to the negative terminal of its adjacent bare battery cell. When the cells are connected in parallel, the positive terminal of the bare battery cell corresponds to the positive terminal of its adjacent bare battery cell, and the negative terminal of the bare battery cell corresponds to the negative terminal of its adjacent bare battery cell.

8. A firewall structure applied to a single-cell module as described in claim 7, characterized in that: Insulating strong magnets are also provided on both sides of the bare cell body; the insulating strong magnets include strong magnet sheets and thermally conductive silicone pads; the thermally conductive silicone pads wrap the strong magnet sheets; the insulating strong magnets are in the shape of ring sheets, including circular rings, rectangular rings or elliptical rings; the insulating strong magnets are connected to the bare cell body by adhesive or riveting.

Images