CN209843901U

CN209843901U - Battery system structure of high-efficient thermal management

Info

Publication number: CN209843901U
Application number: CN201920878914.6U
Authority: CN
Inventors: 迟彦超; 彭月猛; 豆卫广; 伊炳希; 从长杰; 陈保国
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2019-12-24
Anticipated expiration: 2029-06-12

Abstract

The utility model provides a battery system structure of high-efficient thermal management, including module, heating film, a plurality of heat pipes, a plurality of directly-cooled heat exchangers, the module be located the heat pipe above, be provided with the heat conduction pad between module and the heat pipe, directly-cooled heat exchanger be fixed in the both ends of heat pipe respectively, the heating film be located the heat pipe below; the direct cooling heat exchanger is internally provided with a U-shaped flow channel loop, one end of the direct cooling heat exchanger is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the flow channel loop. High-efficient thermal management's battery system structure with the heat pipe, directly cool the system, add integration such as fever membrane in battery system, improve battery system's heat transfer capacity.

Description

Battery system structure of high-efficient thermal management

Technical Field

The utility model belongs to the battery system field especially relates to a battery system structure of high-efficient heat management.

Background

In the days of the change of science and technology, the travel mode of the electric automobile is also changed greatly, and the electric automobile has the advantages of environmental protection, energy conservation and the like, so that a new revolution of automobile technology is developed. One of the core components of the electric automobile is a power battery system, which mainly comprises a ternary lithium battery material, and due to the material characteristics, a large amount of heat can be generated when working condition charging and discharging are carried out, the battery is overheated, the endurance mileage of the automobile can be influenced, the service life is shortened, and even thermal runaway is induced, so that the great safety problem is caused. The use performance, service life, charging capacity and the like of the product are influenced by the excessively low temperature. In view of the great influence of thermal sensitivity and temperature of the power battery on battery performance and the like, it is necessary to thermally control the power battery system. At present, the main flow products mainly adopt the technical schemes of air cooling, liquid cooling and the like. The patent is proposed to better meet the challenge of the thermal management requirement.

Disclosure of Invention

In view of this, the utility model aims at providing a battery system structure of high-efficient thermal management, 1)

High temperature control efficiency, safety and reliability.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a battery system structure with high-efficiency heat management comprises a module, a heating film, a plurality of heat pipes and a plurality of direct-cooling heat exchangers, wherein the module is positioned above the heat pipes, a heat conduction pad is arranged between the module and the heat pipes, the direct-cooling heat exchangers are respectively fixed at two ends of the heat pipes, and the heating film is positioned below the heat pipes;

the direct cooling heat exchanger is internally provided with a U-shaped flow channel loop, one end of the direct cooling heat exchanger is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the flow channel loop.

Furthermore, the flow passage loop comprises an inner loop and an outer loop, the inner loop is positioned at the inner side of the outer loop, the top of the inner loop is communicated with the top of the outer loop, and the bottom of the inner loop is communicated with the bottom of the outer loop.

Furthermore, the liquid inlets are communicated with the top of the inner loop and the top of the outer loop; the liquid outlets are communicated with the bottom of the inner loop and the bottom of the outer loop.

Furthermore, the heat pipe comprises a horizontal part and 2 side parts, wherein the side parts are respectively positioned at two ends of the horizontal part and are communicated with the horizontal part.

Further, the horizontal part is perpendicular to the side part.

Further, the direct cooling heat exchangers are respectively positioned at the outer sides of the corresponding side parts; the length of the horizontal part is larger than that of the module.

Further, horizontal part and the inside electric core mutually perpendicular of module.

Furthermore, the side parts are respectively positioned at two sides of the module.

Furthermore, a box body is arranged below the heating film.

Compared with the prior art, high-efficient thermal management's battery system structure have following advantage:

(1) high-efficient thermal management's battery system structure with the heat pipe, directly cool the system, add integration such as heating film in battery system, improve battery system's heat transfer capacity and heat transfer efficiency, increase the flexibility that the thermal management scheme was arranged simultaneously.

(2) High-efficient thermal management's battery system structure accuse temperature is efficient, safe and reliable, thermal management energy consumption reduce, improve electric automobile continuation of the journey, reduce product cost.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic diagram of a battery system structure for efficient thermal management according to an embodiment of the present invention;

fig. 2 is a schematic view of a direct cooling heat exchanger according to an embodiment of the present invention;

fig. 3 is a schematic view of heat dissipation of a heat pipe according to an embodiment of the present invention;

fig. 4 is a schematic diagram of heat pipe heating according to an embodiment of the present invention.

Description of reference numerals:

1-a module; 2-a heat conducting pad; 3-heating the film; 4-a heat pipe; 5-direct cooling heat exchanger; 6, a box body; 41-side part; 42-a horizontal portion; 51-liquid inlet; 52-a liquid outlet; 53-flow path loop; 531-inner loop; 532-outer loop.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-4, a battery system structure with high-efficiency thermal management includes a module, a heating film, a plurality of heat pipes, and a plurality of direct-cooling heat exchangers, wherein the module is located above the heat pipes, a heat conduction pad is disposed between the module and the heat pipes, the direct-cooling heat exchangers are respectively fixed at two ends of the heat pipes, and the heating film is located below the heat pipes;

The flow passage loop comprises an inner loop and an outer loop, the inner loop is positioned on the inner side of the outer loop, the top of the inner loop is communicated with the top of the outer loop, and the bottom of the inner loop is communicated with the bottom of the outer loop. The liquid inlets are communicated with the top of the inner loop and the top of the outer loop; the liquid outlets are communicated with the bottom of the inner loop and the bottom of the outer loop.

The internal flow channel loop of the direct cooling heat exchanger is shown in figure 2, a brazing process is adopted, only two loops which are connected in parallel are arranged in the middle, only one liquid inlet and one liquid outlet are arranged, the path is simple, the explosion-proof pressure is high, the flow consistency of a cooling medium is high, the flow resistance generated when the cold medium flows into the heat exchanger is low, the effect of cooling the heat pipe is stable, the soaking effect is good, and the direct cooling heat exchanger is directly arranged on the end face of the heat pipe and cools the hot steam in the heat pipe. Fig. 1 is a schematic diagram of a battery system structure with efficient thermal management, in which a heat pipe is used as a heat carrier to perform temperature control processing on a module, as shown in fig. 1, a direct-cooling heat exchanger is arranged at one end of the side surface of the heat pipe, and a heating film is arranged at the bottom of the heat pipe as a heating source. The lower surface of the module and the upper surface of the heat pipe are tightly attached together through a heat conducting pad 7 with higher heat conductivity coefficient, so that the heat transfer coefficient is higher, the heat transfer is stable and reliable, and the non-heat transfer surface of the heating film and the direct cooling system needs to be subjected to adiabatic treatment.

The heat pipe comprises a horizontal part and 2 side parts, wherein the side parts are respectively positioned at two ends of the horizontal part and are communicated with the horizontal part. The horizontal part is vertical to the side part. The direct cooling heat exchangers are respectively positioned at the outer sides of the corresponding side parts; the length of the horizontal part is larger than that of the module. The horizontal part and the battery cell inside the module are mutually perpendicular. The side parts are respectively positioned at two sides of the module.

And a box body is also arranged below the heating film.

Fig. 3 is a heat pipe heat transfer directional diagram, the heat transfer of the heat pipe has the directionality, in the heat pipe bottom, when the module temperature is too high and needs to be cooled down, open the direct cooling heat exchanger, the lower medium of temperature enters into the direct cooling heat exchanger through the pipeline and cools off the hot steam in the heat pipe, the medium in the heat pipe flows back to its bottom with the liquid form after the cooling, continuously take away the module heat, the circulative cooling, the medium heat transfer direction is the direction in fig. 3, when the module temperature is too low and needs to be heated, open the heating film of heat pipe bottom, heat the working medium in the heat pipe, the medium heat transfer direction is the direction in fig. 4, continuously heat the module bottom.

The heat pipe is arranged and all is perpendicular with electric core arrangement direction in the module, adopts slot type heat pipe, stretches the heat pipe according to the width of whole module, guarantees that every electric core all can contact with the heat pipe in the whole module.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery system architecture for efficient thermal management, comprising: the heat pipe cooling system comprises a module, a heating film, a plurality of heat pipes and a plurality of direct cooling heat exchangers, wherein the module is positioned above the heat pipes, a heat conduction pad is arranged between the module and the heat pipes, the direct cooling heat exchangers are respectively fixed at two ends of the heat pipes, and the heating film is positioned below the heat pipes;

2. The battery system architecture for efficient thermal management of claim 1, wherein: the flow passage loop comprises an inner loop and an outer loop, the inner loop is positioned on the inner side of the outer loop, the top of the inner loop is communicated with the top of the outer loop, and the bottom of the inner loop is communicated with the bottom of the outer loop.

3. The battery system architecture for efficient thermal management of claim 2, wherein: the liquid inlets are communicated with the top of the inner loop and the top of the outer loop; the liquid outlets are communicated with the bottom of the inner loop and the bottom of the outer loop.

4. The battery system architecture for efficient thermal management of claim 1, wherein: the heat pipe comprises a horizontal part and 2 side parts, wherein the side parts are respectively positioned at two ends of the horizontal part and are communicated with the horizontal part.

5. The battery system architecture for efficient thermal management of claim 4, wherein: the horizontal part is vertical to the side part.

6. The battery system architecture for efficient thermal management of claim 4, wherein: the direct cooling heat exchangers are respectively positioned at the outer sides of the corresponding side parts; the length of the horizontal part is larger than that of the module.

7. The battery system architecture for efficient thermal management of claim 4, wherein: the horizontal part and the battery cell inside the module are mutually perpendicular.

8. The battery system architecture for efficient thermal management of claim 4, wherein: the side parts are respectively positioned at two sides of the module.

9. The battery system architecture for efficient thermal management of claim 1, wherein: and a box body is also arranged below the heating film.