CN217544734U

CN217544734U - Battery thermal management liquid cooling system with mesh structure

Info

Publication number: CN217544734U
Application number: CN202222262116.5U
Authority: CN
Inventors: 杨书廷; 陈宣辰; 董红玉; 刘显卿; 李秋阳
Original assignee: Battery Research Institute Of Henan Co ltd; Henan Normal University
Current assignee: Battery Research Institute Of Henan Co ltd; Henan Normal University
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-10-04
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses a network structure's battery thermal management liquid cooling system, including battery module and cooling module, battery module comprises the battery monomer, cooling module sets up between the battery monomer, cooling module includes cooling plate and base plate, the base plate upper surface has set gradually the primary circulation groove from the outside to the inboard, secondary circulation groove and tertiary circulation groove, the primary circulation groove sets up to square structure, be provided with the connecting through groove between the primary circulation groove diagonal angle, the center of the horizontal direction of base plate is provided with the export through groove, the both ends of export through groove set up to the coolant outlet, the center of the vertical direction of base plate is provided with the entry through groove, the both ends of entry through groove set up to the coolant inlet, the cooling plate laminating is on the surface of base plate; the utility model discloses structural design is novel, and safe and reliable prevents that the inside local temperature of power battery group is too high, guarantees that the temperature is balanced between the battery monomer, and the radiating efficiency is high, has improved the energy output ability of group battery.

Description

Battery thermal management liquid cooling system with mesh structure

Technical Field

The utility model relates to a battery heat dissipation technical field specifically is a network structure's battery thermal management liquid cooling system.

Background

With the background of increasingly severe energy consumption and environmental pollution, new energy vehicles which do not consume non-renewable energy and do not have tail gas pollution are favored, fuel vehicles are gradually replaced by new energy, and countries in the world hope to release energy crisis and environmental pollution by vigorously pushing new energy vehicles. The power battery is the most important core component of the electric automobile, and as a power source of the electric automobile, the performance of the power battery directly affects the performance of the electric automobile. Lithium ion batteries are considered to be one of the most promising types of power batteries in the field of electric vehicles. However, lithium ion batteries generate large amounts of heat during rapid charge-discharge cycles at high current levels, and their energy storage capacity and lifetime are closely related to their temperature and Wen Jun characteristics.

The heat dissipation methods mainly adopted in the industry at present comprise air cooling, liquid cooling and phase change material cooling. Among the three, liquid cooling is a heat dissipation mode which can obtain better heat dissipation effect under the condition of lower cost. The pipeline that coolant liquid circulates is set up in that the group battery is inside to the liquid cooling heat dissipation of commonly using, and the coolant liquid flows through high-temperature region and takes away the heat to the bulk temperature that keeps the group battery is controllable and within range, and guarantees that the difference in temperature of group battery in different positions is not big.

At present, the electric automobile can adopt a liquid cooling technology to dissipate heat of the battery pack, although liquid cooling forms are more and more, the patent design of battery pack heat management is more, the improvement of the performance of cooling liquid is mostly focused on, the design and the research on aspects such as a circulating pipeline are optimized, the risk that the whole battery pack is damaged due to the heat escape of a single battery cell cannot be reduced, and the design of the power battery pack heat management system with a novel structure is less. For example, chinese patent CN208690448 discloses a novel thermal management system for a vehicle-mounted lithium ion battery, which adopts a common pipeline form, the cooling pipeline itself is too simple, and only one inlet and outlet are provided for the coolant to flow up and down, so that the heat dissipation effect is not good, and the requirements in practical use cannot be met, and therefore, an improved technology is urgently needed in the market to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a network structure's battery thermal management liquid cooling system, structural design is novel, and safe and reliable prevents that the inside local temperature of power battery group is too high, guarantees temperature equilibrium between the battery monomer, and the radiating efficiency is high, has improved the energy output ability of group battery, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a network structure's battery thermal management liquid cooling system, includes battery module and cooling module, the battery module comprises the battery monomer, and cooling module sets up between the battery monomer, and cooling module includes cooling plate and base plate, the base plate upper surface has set gradually one-level circulation groove, second grade circulation groove and tertiary circulation groove from the outside to the inboard, and one-level circulation groove sets up to square structure, is provided with the connection logical groove between one-level circulation groove diagonal angle, the center of the horizontal direction of base plate is provided with the logical groove of export, and the both ends that the logical groove of export set up to the coolant liquid export, and the center of the vertical direction of base plate is provided with the logical groove of entry, and the both ends that the logical groove of entry set up to the coolant liquid entry, the cooling plate laminating forms netted passageway on the surface of base plate, the left and right sides of battery module is provided with export fluid pipeline respectively, and coolant liquid export and export fluid pipeline intercommunication, and both sides are provided with entry fluid pipeline respectively around the battery module, and the coolant liquid entry communicates with entry fluid pipeline.

Furthermore, the top surface of the battery module is provided with a refrigerant chamber, the refrigerant chamber is provided with a liquid inlet pipe, and a connecting pipe is arranged between the refrigerant chamber and the inlet fluid pipeline.

Further, the thickness of the upper cooling plate is smaller than that of the substrate.

Furthermore, the four corners of the battery module are provided with supporting angle guards, the lower ends of the supporting angle guards are connected with the underframe, the lower end of the battery module is provided with a confluence pipeline, and the lower end of the outlet fluid pipeline is communicated with the confluence pipeline.

Compared with the prior art, the beneficial effects of the utility model are that:

through one-level circulation groove, second grade circulation groove and tertiary circulation groove can effectual and even reposition of redundant personnel coolant liquid, improve cooling module's heat dissipation homogeneity, cooling module adopts the design of two exports of two entrances, specific netted passageway, the thermal scattering and disappearing of battery module has been accelerated, when making cooling module and the contact of battery monomer that faces mutually, can reduce the free thermal escape diffusion of battery to neighbouring battery module, the security and the homogeneity of battery module have been improved, go up the material manufacturing that cooling plate and base plate all adopted high thermal conductivity, ensure that the coolant liquid can fully contact with the heat, the utility model discloses structural design is novel, safe and reliable prevents that the inside local temperature of power battery group is too high, guarantees that the temperature is balanced between the battery monomer, and the radiating efficiency is high, has improved the energy output ability of group battery.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the cooling module of the present invention;

FIG. 3 is a schematic top view of the substrate of the present invention;

fig. 4 is a front view of the cooling assembly of the present invention.

In the figure: 1 battery monomer, 2 export fluid pipeline, 3 support angle bead, 4 cooling module, 5 entry fluid pipeline, 6 connecting pipes, 7 refrigerant rooms, 8 feed liquor pipes, 9 pipeline of converging, 10 chassis, 11 upper cooling plate, 12 base plates, 13 first-stage circulation grooves, 14 export logical grooves, 15 entry logical grooves, 16 connect logical groove, 17 tertiary circulation grooves, 18 second-stage circulation grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a battery thermal management liquid cooling system with a net structure comprises a battery module and a cooling assembly 4, wherein the battery module is composed of battery monomers 1, the cooling assembly 4 is arranged between the battery monomers 1, the cooling assembly 4 comprises an upper cooling plate 11 and a substrate 12, the thickness of the upper cooling plate 11 is smaller than that of the substrate 12, the upper cooling plate 11 and the substrate 12 are both made of high-thermal-conductivity materials, the cooling liquid can be ensured to be fully contacted with heat, a primary circulating groove 13, a secondary circulating groove 18 and a tertiary circulating groove 17 are sequentially arranged on the upper surface of the substrate 12 from the outer side to the inner side, the cooling liquid can be effectively and uniformly distributed through the primary circulating groove 13, the secondary circulating groove 18 and the tertiary circulating groove 17, the heat dissipation uniformity of the cooling assembly 4 is improved, the primary circulating groove 13 is of a square structure, and a connecting through groove 16 is arranged between opposite corners of the primary circulating groove 13, an outlet through groove 14 is arranged at the center of the horizontal direction of the substrate 12, two ends of the outlet through groove 14 are provided with coolant outlets, an inlet through groove 15 is arranged at the center of the vertical direction of the substrate 12, two ends of the inlet through groove 15 are provided with coolant inlets, the cooling plate 11 is attached to the surface of the substrate 12, a reticular channel is formed between the cooling plate 11 and the groove of the substrate 12, the cooling component 4 adopts a double-inlet double-outlet design, and the specific reticular channel accelerates the dissipation of heat of the battery module, so that when the cooling component 4 is contacted with the adjacent battery monomer 1, the heat escape and diffusion of the battery monomer 1 to the adjacent battery module can be reduced, the safety and the uniformity of the battery module are improved, outlet fluid pipelines 2 are respectively arranged at the left side and the right side of the battery module, the coolant outlets are communicated with the outlet fluid pipelines 2, and inlet fluid pipelines 5 are respectively arranged at the front side and the back side of the battery module, the coolant liquid entry and entry fluid pipeline 5 intercommunication, the top surface of battery module is provided with refrigerant room 7, be provided with feed liquor pipe 8 on refrigerant room 7, be provided with connecting pipe 6 between refrigerant room 7 and the entry fluid pipeline 5, the four corners of battery module is provided with supports angle bead 3, the lower extreme that supports angle bead 3 is connected with chassis 10, the lower extreme of battery module is provided with pipeline 9 that converges, the lower extreme and the pipeline 9 intercommunication that converges of export fluid pipeline 2, converge the coolant liquid together through pipeline 9 that converges, converge to circulative cooling system, protect the four corners of battery module through supporting angle bead 3, prevent to damage battery monomer 1 because of receiving the collision, the utility model discloses structural design is novel, safe and reliable prevents that the inside local temperature of power battery group is too high, guarantees that the temperature is balanced between the battery monomer 1, and the radiating efficiency is high, has improved the energy output ability of group battery.

When in use: the coolant liquid enters the refrigerant chamber 7 through the liquid inlet pipe 8, the coolant liquid is shunted to the inlet fluid pipeline 5 through the connecting pipe 6, then the coolant liquid enters the inlet through groove 15, the reticular channel of the coolant liquid in the cooling assembly 4 flows, then the coolant liquid flows to the outlet through groove 14, the coolant liquid enters the outlet fluid pipeline 2 through the outlet, the coolant liquid is converged to the converging pipeline 9, the coolant liquid can be effectively and uniformly shunted through the primary circulation groove 13, the secondary circulation groove 18 and the tertiary circulation groove 17, the heat dissipation uniformity of the cooling assembly 4 is improved, the upper cooling plate 11 and the substrate 12 are both made of high-heat-conductivity materials, and the coolant liquid can be fully contacted with heat.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a network structure's battery thermal management liquid cooling system, includes battery module and cooling module (4), its characterized in that: the battery module comprises battery monomer (1), and cooling module (4) set up between battery monomer (1), and cooling module (4) include cooling plate (11) and base plate (12), base plate (12) upper surface has set gradually one-level circulation groove (13), second grade circulation groove (18) and tertiary circulation groove (17) from the outside to the inboard, and one-level circulation groove (13) set up to square structure, are provided with between one-level circulation groove (13) diagonal angle and connect logical groove (16), the center of the horizontal direction of base plate (12) is provided with export through groove (14), and the both ends of export through groove (14) set up to the coolant outlet, and the center of the vertical direction of base plate (12) is provided with entry through groove (15), and the both ends that enter through groove (15) set up to the coolant inlet, cooling plate (11) laminating is on the surface of base plate (12), forms netted passageway between the groove of cooling plate (11) and base plate (12), the left and right sides of battery module are provided with export fluid pipeline (2) respectively, and coolant outlet and export fluid pipeline (2) intercommunication, and battery module both sides are provided with entry fluid pipeline (5) respectively around the battery module, and inlet fluid pipeline (5), and cooling fluid inlet fluid intercommunication.

2. The system of claim 1, wherein the battery thermal management liquid cooling system comprises: the battery module is characterized in that a refrigerant chamber (7) is arranged on the top surface of the battery module, a liquid inlet pipe (8) is arranged on the refrigerant chamber (7), and a connecting pipe (6) is arranged between the refrigerant chamber (7) and the inlet fluid pipeline (5).

3. The system of claim 1, wherein the battery thermal management liquid cooling system comprises: the thickness of the upper cooling plate (11) is smaller than that of the substrate (12).

4. The system of claim 1, wherein the battery thermal management liquid cooling system comprises: the four corners of the battery module are provided with supporting angle beads (3), the lower end of each supporting angle bead (3) is connected with an underframe (10), the lower end of the battery module is provided with a confluence pipeline (9), and the lower end of the outlet fluid pipeline (2) is communicated with the confluence pipeline (9).