CN218849605U

CN218849605U - Novel battery thermal management system

Info

Publication number: CN218849605U
Application number: CN202223116694.4U
Authority: CN
Inventors: 陈敏; 沈海平; 许金龙; 李杨
Original assignee: Wuxi United Trinity Electronics Co ltd
Current assignee: Wuxi United Trinity Electronics Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-04-11
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses a novel battery thermal management system, which comprises a battery pack module group, wherein a liquid outlet of the battery pack module group is communicated with a liquid inlet branch pipe, a water pump is installed on the liquid inlet branch pipe and is connected with one end of a battery cooler, the other end of the battery cooler is connected with a liquid return branch pipe, and a control valve is installed on the liquid return branch pipe and is communicated with a liquid return port of the battery pack module group; the liquid return branch pipe is connected with an expansion water tank through a liquid supplementing branch pipe, the expansion water tank has the main function of storing liquid and exhausting gas, an exhaust port is formed in the side wall of the expansion water tank and communicated with one end of the exhaust branch pipe, the other end of the exhaust branch pipe is communicated with the liquid return branch pipe, and the position, connected with the liquid return branch pipe, of the exhaust branch pipe is located between the battery cooler and the control valve. The utility model discloses a novel battery thermal management system has solved the exhaust problem in current thermal management system's the pipeline to reduced the pipeline resistance and made the flow can satisfy the requirement of regulation.

Description

Novel battery thermal management system

Technical Field

The utility model belongs to the technical field of the technique of group battery thermal management and specifically relates to a novel battery thermal management system is related to.

Background

The battery pack module group is used as a power source of the new energy automobile, and the overall performance of the new energy automobile is directly influenced. Too high or too low operating temperature can seriously affect the performance of the battery pack module set, so that the efficient thermal management system is very important for the performance, the cycle life and the driving range of the vehicle of the battery pack module set.

As shown in fig. 1, the shut-off valve in the prior art thermal management system is installed in front of the water pump and the battery cooler. When the unit is operated for the first time or liquid is required to be added, the stop valve is manually closed, and redundant gas in the water channel and the water tank is exhausted through the exhaust pipe. When the water tank liquid level reaches the specified height, need manually open the stop valve, waterway system normal cycle operation, unnecessary gas can't be arranged in battery cooler and the pipeline afterwards to the greatest extent can lead to following shortcoming: 1. gas in the waterway system can not be exhausted completely; 2. the internal resistance of the water path is large; 3. the water flow is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above-mentioned prior art not enough, and provide a novel battery thermal management system.

In order to achieve the above object, the utility model discloses a novel battery thermal management system's concrete technical scheme as follows:

a novel battery thermal management system comprises a battery pack module group, wherein a liquid outlet of the battery pack module group is communicated with a liquid inlet branch pipe, a water pump is mounted on the liquid inlet branch pipe and is connected with one end of a battery cooler, the other end of the battery cooler is connected with a liquid return branch pipe, and a control valve is mounted on the liquid return branch pipe and is communicated with a liquid return port of the battery pack module group;

the liquid return branch pipe is connected with an expansion water tank through a liquid supplementing branch pipe, the expansion water tank has the main function of storing liquid and exhausting gas, an exhaust port is formed in the side wall of the expansion water tank and communicated with one end of the exhaust branch pipe, the other end of the exhaust branch pipe is communicated with the liquid return branch pipe, and the position where the exhaust branch pipe is connected with the liquid return branch pipe is located between the battery cooler and the control valve;

after the control valve is adjusted to the battery cooler, when the unit operates for the first time or liquid is required to be added, the control valve is manually closed, redundant gas in the pipeline and the expansion water tank is exhausted through the exhaust branch pipe, when the liquid level of the expansion water tank reaches the specified height, the control valve needs to be manually opened, and the water path system operates normally and circularly.

Further, the top of the expansion water tank is provided with an emptying valve.

Furthermore, a first liquid level sensor and a second liquid level sensor are arranged inside the expansion water tank.

Furthermore, the second liquid level sensor is a low water level liquid level sensor, the first liquid level sensor is a high water level liquid level sensor, and the height of the second liquid level sensor is lower than that of the first liquid level sensor.

Furthermore, the control valve is the controllable stop valve of aperture, and when the unit was run for the first time or need the liquid feeding, the stop valve was closed to the manual, and unnecessary gas in pipeline and the expansion tank was exhausted through exhaust branch, reached the height of regulation when expansion tank's liquid level, needed the manual stop valve of opening, waterway system normal cycle operation.

Furthermore, the position where the liquid supplementing branch pipe and the liquid returning branch pipe are connected is located between the control valve and the battery pack module group.

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

the utility model discloses in, after transferring the battery cooler with the control valve, when the unit was run for the first time or need the liquid feeding, manual closing control valve arranged unnecessary gas in pipeline and expansion tank through exhaust branch, reached the height of regulation when expansion tank's liquid level, needed manual opening control valve, water channel system normal cycle operation, the utility model provides a new scheme can solve the problem that gas row is not clean in the pipeline after battery cooler reaches, can the resistance in the greatly reduced system, makes the flow can satisfy the requirement of regulation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a thermal management system of the prior art;

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

the symbols in the figure illustrate:

1. an expansion tank; 101. an emptying valve; 102. a first liquid level sensor; 103. a second liquid level sensor; 104. an exhaust port;

2. an exhaust branch pipe; 3. a liquid supplementing branch pipe; 4. a liquid inlet branch pipe; 5. a battery cooler; 6. a water pump; 7. a control valve; 8. a liquid return branch pipe; 9. battery package module group.

Detailed Description

For better understanding of the purpose, structure and function of the present invention, the following detailed description of the novel battery thermal management system is made in conjunction with the accompanying drawings and the preferred embodiments.

In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, "first", "second" and the like do not indicate the degree of importance of the component parts, and thus, are not to be construed as limiting the present invention.

Example 1:

referring to fig. 1-2, the present invention provides a technical solution: a novel battery thermal management system comprises a battery pack module group 9, wherein a liquid outlet of the battery pack module group 9 is communicated with a liquid inlet branch pipe 4, a water pump 6 is installed on the liquid inlet branch pipe 4 and is connected with one end of a battery cooler 5, the other end of the battery cooler 5 is connected with a liquid return branch pipe 8, and a control valve 7 is installed on the liquid return branch pipe 8 and is communicated with a liquid return port of the battery pack module group 9;

the liquid return branch pipe 8 is connected with an expansion water tank 1 through a liquid supplementing branch pipe 3, the expansion water tank 1 has the main functions of storing liquid and exhausting gas, an exhaust port 104 is formed in the side wall of the expansion water tank 1, the exhaust port 104 is communicated with one end of an exhaust branch pipe 2, the other end of the exhaust branch pipe 2 is communicated with the liquid return branch pipe 8, and the position where the exhaust branch pipe 2 is connected with the liquid return branch pipe 8 is located between a battery cooler 5 and a control valve 7;

after the control valve 7 is adjusted to the battery cooler 5, when the unit operates for the first time or liquid is required to be added, the control valve 7 is manually closed, redundant gas in the pipeline and the expansion water tank 1 is exhausted through the exhaust branch pipe 2, when the liquid level of the expansion water tank 1 reaches the specified height, the control valve 7 needs to be manually opened, and the water path system operates normally and circularly.

Further, an emptying valve 101 is arranged at the top of the expansion water tank 1.

Further, a first liquid level sensor 102 and a second liquid level sensor 103 are arranged inside the expansion tank 1.

Further, the second liquid level sensor 103 is a low liquid level sensor, the first liquid level sensor 102 is a high liquid level sensor, and the height of the second liquid level sensor 103 is lower than that of the first liquid level sensor 102.

Further, control valve 7 is the controllable stop valve of aperture, and when the unit was run for the first time or need the liquid feeding, the stop valve was closed to the manual, and unnecessary gas in pipeline and expansion tank 1 is arranged to the greatest extent through exhaust branch 2, and when expansion tank 1's liquid level reached the height of regulation, the stop valve need be opened manually, waterway system normal cycle operation.

Further, the position where the liquid supplementing branch pipe 3 is connected with the liquid returning branch pipe 8 is located between the control valve 7 and the battery pack module group 9.

The working principle is as follows:

the novel battery thermal management system mainly comprises an expansion water tank 1, a liquid supplementing branch pipe 3, a battery cooler 5, a water pump 6, a control valve 7 and a battery pack module group 9; the utility model discloses in, with control valve 7, after the stop valve transferred battery cooler 5 promptly, when the unit was run for the first time or need the liquid feeding, the manual stop valve that closes, arrange unnecessary gas in pipeline and expansion tank 1 to the greatest extent through exhaust branch 2, reach the height of regulation when expansion tank 1's liquid level, need the manual stop valve of opening, water route system normal cycle operation, the utility model provides a novel scheme can solve battery cooler 5 and later in the pipeline gas arrange unclean problem, resistance in can the greatly reduced system, makes the flow can satisfy the requirement of regulation.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. A novel battery thermal management system is characterized in that: the battery pack module set comprises a battery pack module set (9), wherein a liquid outlet of the battery pack module set (9) is communicated with a liquid inlet branch pipe (4), a water pump (6) is installed on the liquid inlet branch pipe (4) and is connected with one end of a battery cooler (5), the other end of the battery cooler (5) is connected with a liquid return branch pipe (8), and a control valve (7) is installed on the liquid return branch pipe (8) and is communicated with a liquid return port of the battery pack module set (9);

liquid return branch pipe (8) is connected with expansion tank (1) through fluid infusion branch pipe (3), and the lateral wall of expansion tank (1) is equipped with gas vent (104), and gas vent (104) and the one end intercommunication of exhaust branch pipe (2), the other end of exhaust branch pipe (2) and liquid return branch pipe (8) intercommunication, and exhaust branch pipe (2) and the position of returning liquid branch pipe (8) to be connected are located between battery cooler (5) and control valve (7).

2. The novel battery thermal management system according to claim 1, characterized in that a vent valve (101) is arranged on the top of the expansion tank (1).

3. The novel battery thermal management system according to claim 1, characterized in that a first liquid level sensor (102) and a second liquid level sensor (103) are arranged inside the expansion tank (1).

4. The novel battery thermal management system of claim 3, characterized in that the second liquid level sensor (103) is a low liquid level sensor, the first liquid level sensor (102) is a high liquid level sensor, and the height of the second liquid level sensor (103) is lower than the height of the first liquid level sensor (102).

5. The novel battery thermal management system according to claim 1, characterized in that the control valve (7) is a stop valve with controllable opening degree.

6. The novel battery thermal management system according to claim 1, wherein the connection position of the liquid supplementing branch pipe (3) and the liquid returning branch pipe (8) is located between the control valve (7) and the battery pack module group (9).