A heat dissipation flow channel structure applied to a single cell module

Abstract

The utility model provides a kind of applied to single cell module's heat dissipation runner structure, including the side water flow channel in the inside side of multifunctional battery box and the bottom water flow channel in the bottom of the multifunctional battery box;The side water flow channel is hollow square panel structure or magazine type water flow channel structure or with the shape of the honeycomb cell storage bin in the multifunctional battery box mutually matched, form the runner structure similar to corrugated paper shell;Still include the special channel of pressure relief arranged in parallel with the bottom water flow channel;The multifunctional battery box is respectively provided with water inlet and water outlet in both ends;The water inlet, the water outlet and the side water flow channel, the bottom water flow channel are communicated, in practical application, can greatly improve the contact surface of water flow and bare battery body, improve heat dissipation performance.

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 heat dissipation channel structure for single cell modules that can effectively improve manufacturing efficiency, enhance operational reliability, and extend product lifespan. [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 heat dissipation channel structure for a single-cell module is provided, including a side water flow channel inside a multifunctional cell housing and a bottom water flow channel at the bottom of the multifunctional cell housing; the side water flow channel is a hollow square panel structure or a clip-on water flow channel structure, or matches the shape of the honeycomb cell placement compartment in the multifunctional cell housing to form a channel structure similar to a corrugated cardboard shell; it also includes a dedicated pressure relief channel arranged parallel to and spaced apart from the bottom water flow channel; the two ends of the multifunctional 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.

[0010] Preferably, the multifunctional battery cell housing is formed by injection molding or casting; the multifunctional battery cell housing has a plurality of battery cell placement compartments for placing bare battery cell bodies; an explosion-proof valve is provided at the bottom of the bare battery cell body; and the positions of the explosion-proof valve and the pressure relief channel correspond to each other.

[0011] 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.

[0012] 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.

[0013] Preferably, the inside of the multifunctional battery cell housing is further provided with several firewalls for fire protection and isolation; the firewalls are located between two adjacent bare battery cell bodies.

[0014] 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.

[0015] Preferably, the multifunctional battery cell housing has a bottom water channel cover at the bottom and an upper cover at the top. The upper cover is either an integral plate structure or multiple independent plate structures corresponding to each bare battery cell body. It also includes insulating strong magnets disposed on both sides of the bare battery cell body. The insulating strong magnets include strong magnet sheets and thermally conductive silicone pads. The thermally conductive silicone pads wrap around the strong magnet sheets. The insulating strong magnets are annular in shape, including circular, rectangular, or elliptical annular shapes. The insulating strong magnets are connected to the bare battery cell body by adhesive bonding or riveting.

[0016] Preferably, the bare cell body has a flat square or cylindrical structure.

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

[0018] Compared with existing technologies, the heat dissipation channel structure of this utility model for single-cell modules adopts the following structural construction: a side water flow channel inside the multi-functional cell housing and a bottom water flow channel at the bottom of the multi-functional cell housing; the side water flow channel is a hollow square panel structure or a clip-type water flow channel structure, or matches the shape of the honeycomb cell placement compartment in the multi-functional cell housing to form a flow channel structure similar to a corrugated cardboard shell; it also includes a dedicated pressure relief channel arranged parallel to and spaced apart from the bottom water flow channel; the two ends of the multi-functional 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. In practical applications, this greatly increases the contact area between the water flow and the bare cell body, thereby improving heat dissipation performance. [Image Description]

[0019] Figures 1 to 3 This is a schematic diagram of different states of the heat dissipation channel structure applied to a square-structured single-cell module according to this utility model.

[0020] Figure 4 and Figure 5 This is a schematic diagram of different states of the heat dissipation channel structure applied to a cylindrical single-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 Figures 1 to 5 This utility model discloses a heat dissipation channel structure 1 for a single-cell module, including a side water flow channel inside a multi-functional cell housing and a bottom water flow channel at the bottom of the multi-functional cell housing. The side water flow channel is a hollow square panel structure or a clip-type water flow channel structure, or it matches the shape of the honeycomb cell placement compartment in the multi-functional cell housing to form a channel structure similar to a corrugated cardboard shell. It also includes a pressure relief channel that is parallel to and spaced apart from the bottom water flow channel. The two ends of the multi-functional 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.

[0029] In some other embodiments, the multifunctional battery cell housing is formed by injection molding or casting; the multifunctional battery cell housing has a plurality of battery cell placement compartments for placing bare battery cell bodies; an explosion-proof valve is provided at the bottom of the bare battery cell body; and the positions of the explosion-proof valve and the pressure relief channel correspond to each other.

[0030] 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.

[0031] 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.

[0032] The inside of the multifunctional battery cell housing is also provided with several firewalls for fire protection and isolation; the firewalls are located between two adjacent bare battery cell bodies.

[0033] 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.

[0034] The multifunctional battery cell housing has a bottom water channel cover at the bottom and an upper cover at the top. The upper cover is either an integral plate structure or multiple independent plate structures corresponding to each bare battery cell body. It also includes insulating strong magnets disposed on both sides of the bare battery cell body. Each insulating strong magnet includes a strong magnet sheet and a thermally conductive silicone pad. The thermally conductive silicone pad wraps around the strong magnet sheet. The insulating strong magnet is ring-shaped, including circular, rectangular, or elliptical rings. The insulating strong magnet is connected to the bare battery cell body by adhesive bonding or riveting.

[0035] The bare battery cell body has a flat square or cylindrical structure.

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

[0037] Compared with the prior art, the heat dissipation channel structure 1 of this utility model for a single-cell module adopts the following structural construction: a side water flow channel inside the multi-functional cell housing and a bottom water flow channel at the bottom of the multi-functional cell housing; the side water flow channel is a hollow square panel structure or a clip-type water flow channel structure, or matches the shape of the honeycomb cell placement compartment in the multi-functional cell housing to form a channel structure similar to a corrugated cardboard shell; it also includes a pressure relief channel arranged parallel to and spaced apart from the bottom water flow channel; the two ends of the multi-functional 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. In practical applications, this greatly increases the contact area between the water flow and the bare cell body, thereby improving heat dissipation performance.

[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 heat dissipation channel structure applied to a single-cell module, characterized in that: This includes a side water flow channel inside the insulated multi-functional battery cell housing and a bottom water flow channel at the bottom of the multi-functional battery cell housing. The side water flow channel has a hollow square panel structure or a clip-on water flow channel structure, or matches the shape of the honeycomb-shaped battery cell placement compartment in the multifunctional battery cell box to form a flow channel structure similar to a corrugated cardboard shell; it also includes a pressure relief channel that is parallel and spaced apart from the bottom water flow channel; the two ends of the multifunctional battery cell box 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.

2. The heat dissipation channel structure applied to a single-cell module as described in claim 1, characterized in that: The multifunctional battery cell housing is formed by injection molding or casting; the multifunctional battery cell housing has several battery cell placement compartments for placing bare battery cell bodies; the bottom of the bare battery cell body is provided with an explosion-proof valve; and the positions of the explosion-proof valve and the pressure relief channel correspond to each other.

3. The heat dissipation channel structure applied to a single-cell module as described in claim 2, characterized in that: 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.

4. The heat dissipation channel structure applied to a single-cell module as described in claim 3, 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.

5. A heat dissipation channel structure for a single-cell module as described in any one of claims 1 to 4, characterized in that: The inside of the multifunctional battery cell housing is also provided with several firewalls for fire protection and isolation; the firewalls are located between two adjacent bare battery cell bodies.

6. A heat dissipation channel structure for a single-cell module as described in any one of claims 1 to 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.

7. The heat dissipation channel structure applied to a single-cell module as described in claim 1, characterized in that: The multifunctional battery cell housing has a bottom water channel cover at the bottom and an upper cover at the top. The upper cover is either an integral plate structure or multiple independent plate structures corresponding to each bare battery cell body. It also includes insulating strong magnets disposed on both sides of the bare battery cell body. Each insulating strong magnet includes a strong magnet sheet and a thermally conductive silicone pad. The thermally conductive silicone pad wraps around the strong magnet sheet. The insulating strong magnet is ring-shaped, including circular, rectangular, or elliptical rings. The insulating strong magnet is connected to the bare battery cell body by adhesive bonding or riveting.

8. The heat dissipation channel structure applied to a single-cell module as described in claim 7, characterized in that: The bare battery cell body has a flat square or cylindrical structure.

Images