CN218351557U

CN218351557U - Battery pack

Info

Publication number: CN218351557U
Application number: CN202222788056.0U
Authority: CN
Inventors: 安婷; 马姜浩; 杨秋立; 张鹏
Original assignee: Jiangsu Zenergy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-01-20
Anticipated expiration: 2032-10-21

Abstract

The application provides a battery pack, and relates to the technical field of lithium batteries. The battery pack comprises a heat exchange box body, a battery and an adhesive, wherein a positioning groove is formed in the surface of the heat exchange box body, and a flow channel is formed in the heat exchange box body and used for introducing a heat exchange medium; the battery is arranged in the positioning groove; the adhesive is arranged between the battery and the groove wall of the positioning groove. The battery pack is simple in structure, high in heat exchange efficiency and good in heat management effect.

Description

Battery pack

Technical Field

The utility model relates to a lithium electricity technical field particularly, relates to a battery pack.

Background

When the battery is in use, if the temperature is too high or too low, the influence on the performance and the service life of the battery is large, and therefore the thermal management of the battery is very important.

In the prior art, the battery is subjected to heat exchange in a natural cooling mode, so that the heat exchange efficiency is low and the effect is poor. If add thermal management system and carry out the heat transfer to the battery, the structure is complicated. Some thermal management systems, such as soaking the battery in a thermal management liquid, also risk the thermal management liquid penetrating into adjacent components, or causing damage to the battery, etc.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery pack, its simple structure, heat exchange efficiency is high, and it is effectual to carry out the thermal management to the battery.

The embodiment of the utility model is realized like this:

in a first aspect, the present invention provides a battery pack, including:

a heat exchange box body; the surface of the heat exchange box body is provided with a positioning groove, the interior of the heat exchange box body is provided with a flow channel, and the flow channel is used for introducing a heat exchange medium;

a battery; the battery is arranged in the positioning groove;

and the adhesive is arranged between the battery and the groove wall of the positioning groove.

In an alternative embodiment, the depth of the positioning groove is greater than or equal to half the height of the battery.

In an alternative embodiment, the heat exchange box body is provided with an inlet and an outlet which are respectively communicated with the flow channel.

In an alternative embodiment, the inlet and the outlet are each provided with a flow guide tube.

In an optional embodiment, the draft tube is convexly arranged on the surface of the heat exchange box body.

In an alternative embodiment, the positioning slot is a through slot.

In an alternative embodiment, the adhesive is a thermally conductive structural adhesive.

In an optional embodiment, the heat exchange box body is made of metal.

In an optional embodiment, the heat exchange box body is of an integrally formed structure.

In an alternative embodiment, the positioning groove is not in communication with the flow passage.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides a battery package, battery are installed in the constant head tank, stable in structure. Be equipped with the runner in the heat transfer box, the heat transfer medium in the runner can carry out the heat transfer to the side of battery, and heat exchange efficiency is high. And the heat exchange medium is arranged in the heat exchange box body and is not directly contacted with the battery, so that the damage risks such as infiltration and the like to the battery can be avoided. Through set up the adhesive between battery and heat transfer box, further improve structural stability and heat conduction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a first viewing angle of a battery pack according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second viewing angle of the battery pack according to an embodiment of the present invention;

fig. 3 is a schematic view of an exploded structure of a battery pack according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a battery pack according to an embodiment of the present invention.

Icon: 100-a battery pack; 110-a heat exchange box body; 111-a positioning slot; 113-a flow channel; 121-inlet; 123-an outlet; 125-a draft tube; 130-a battery; 131-side face; 150-adhesive.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 as a specific case by those skilled in the art.

When the battery is in use, if the temperature is too high or too low, the influence on the performance and the service life of the battery is large, and therefore the thermal management of the battery is very important. The currently adopted battery thermal management methods mainly include the following methods:

first, the natural cooling method, i.e., the related thermal management system is not designed in the battery system, may cause the temperature to be too high or too low during the operation of the battery pack, thereby reducing the operation performance of the battery pack and even the service life of the battery pack.

And secondly, the bottom thermal management system is arranged on the bottom surface of the battery, and the battery system cannot be effectively radiated and heated in a short time due to small area of the bottom surface of the battery and low thermal management efficiency.

And thirdly, the thermal management system is arranged on the side surface of the shell of the battery, so that the thermal management system exchanges heat with the battery to achieve the purpose of thermal management, but the structure is complex, the installation process is complex, and the thermal management efficiency is still lower.

Fourth, the immersive thermal management system, which soaks the battery in the thermal management liquid, has a heat dissipation function, but cannot effectively heat the battery pack, and the thermal management liquid may penetrate into other adjacent components or cause damage to the battery pack.

In order to overcome the defects of the prior art, the embodiment of the utility model provides a battery pack, simple structure, heat exchange efficiency is high, carries out the thermal management to the battery effectual, can conveniently realize the heat dissipation and the heating to the battery.

Referring to fig. 1 to 4, the present embodiment provides a battery pack 100, including a heat exchange box 110, a battery 130, and an adhesive 150, where a positioning groove 111 is formed on a surface of the heat exchange box 110, a flow channel 113 is formed inside the heat exchange box 110, and the flow channel 113 is used for introducing a heat exchange medium. The battery 130 is disposed in the positioning groove 111, and the adhesive 150 is disposed between the battery 130 and the groove wall of the positioning groove 111. This battery package 100 simple structure, the heat transfer medium in runner 113 can carry out the heat transfer to battery 130's side 131, and heat exchange efficiency is high. The heat exchange medium is arranged in the heat exchange box body 110, is not directly contacted with the battery 130, and cannot cause damage risks such as infiltration to the battery 130. By providing the adhesive 150 between the battery 130 and the heat exchange case 110, the structural stability and the heat conduction function are further improved. The battery 130 can be heated and radiated respectively, the heat exchange efficiency is high, and the heat management effect is good.

The battery 130 may be a cylindrical battery with 18650, 21700, 4680 specifications, or may be a battery 130 with other shapes, such as a prismatic battery, which is not limited herein.

Alternatively, the depth of the positioning groove 111 is greater than or equal to half the height of the battery 130. By the arrangement, the effective heat exchange area between the side 131 of the battery 130 and the heat exchange box 110 can be ensured to be larger, the uniformity of heat exchange is improved, and the heat exchange efficiency is improved. In this embodiment, the depth of the positioning groove 111 is deep, and after the battery 130 is installed in the positioning groove 111, the groove wall of the positioning groove 111 can wrap more than 80% of the area of the side surface 131 of the battery 130, thereby improving the heat exchange efficiency.

Alternatively, the positioning groove 111 may employ a through-groove or blind-hole structure. If the positioning groove 111 is a through groove, that is, the positioning groove 111 directly penetrates through the heat exchange box 110, the side surface 131 of the battery 130 is located in the positioning groove 111, and two ends of the battery 130 are exposed from the positioning groove 111. The side 131 of the battery 130 may exchange heat with the heat exchange case 110, and both ends of the battery 130 may exchange heat with air in the environment.

If the positioning groove 111 adopts a blind hole structure, one end of the battery 130 is arranged at the bottom of the positioning groove 111, the side 131 of the battery 130 is positioned in the positioning groove 111, the other end of the battery 130 is exposed from the notch of the positioning groove 111, and the side 131 of the battery 130 and the end surface of the battery 130 positioned at the bottom of the positioning groove 111 can exchange heat with the heat exchange box body 110 respectively, so that the heat exchange area is large, and the heat exchange uniformity is good.

It should be understood that the positioning groove 111 is not communicated with the flow channel 113 inside the heat exchange case 110. The heat exchange medium in the flow channel 113 does not directly contact the battery 130, and the phenomenon of permeating into the battery 130 or damaging the battery 130 does not exist, so that the safety is higher, and the service life of the battery pack 100 is longer.

Optionally, the heat exchange box 110 is of an integrally formed structure. For example, the molding is performed by stamping, casting, or sheet metal welding. The flow channel 113 inside the heat exchange housing 110 may be a regular shaped flow channel 113, such as U-shaped, W-shaped, S-shaped, wave-shaped, or Z-shaped. The flow channel 113 may also be an irregular shape as long as the heat exchange box 110 has a cavity structure for accommodating the heat exchange medium therein. The internal cavity structure may be one or more. If a plurality of cavity structures are provided, the plurality of cavity structures may be connected or partially connected with each other, or not connected with each other, and are not particularly limited herein. In this embodiment, the internal flow channel 113 is disposed corresponding to each positioning groove 111, that is, after the heat exchange medium is introduced into the flow channel 113, the heat exchange medium can exchange heat with each battery 130, so as to ensure the uniformity of heat exchange of the whole battery pack 100 and prevent the local temperature from being too high or too low.

The heat exchange medium may be a gas or a liquid. If the battery pack 100 needs cooling and heat dissipation, cooling water, refrigerating fluid or cold air may be introduced into the flow channel 113. If the battery pack 100 needs to be heated, hot water, hot oil or hot gas may be introduced into the flow channel 113, which is not particularly limited herein.

Optionally, the heat exchange box 110 is made of metal. The metal material is convenient for form constant head tank 111 and inside runner 113, and processing is more convenient, and manufacturing efficiency is high. Moreover, the metal material has good structural strength, is not easy to deform, is wear-resistant and durable, and has long service life. The heat exchange box 110 may further enhance the structural rigidity and structural strength of the battery pack 100, and improve the service life of the battery pack 100.

Of course, in other alternative embodiments, the heat exchange box 110 may be made of other materials. Including but not limited to, plastic or rubber, etc., and is not particularly limited thereto.

Optionally, the heat exchange box 110 is provided with an inlet 121 and an outlet 123 respectively communicated with the flow channel 113. The inlet 121 is used for adding a heat exchange medium into the flow channel 113, and the outlet 123 is used for discharging the heat exchange medium in the flow channel 113. The heat exchange medium in the flow passage 113 can be replaced in time to ensure the heat exchange efficiency. Or, the heat exchange medium may be continuously introduced into the flow channel 113, so that the heat exchange medium is in a dynamic flow state in the flow channel 113, thereby improving the heat exchange efficiency.

In this embodiment, the inlet 121 and the outlet 123 are respectively provided with a flow guide tube 125. The draft tube 125 is protruded on the surface of the heat exchange box 110. The honeycomb duct 125 is convenient for the addition and the discharge of heat transfer medium, plays the effect of water conservancy diversion to heat transfer medium, when preventing to add or discharge heat transfer medium, heat transfer medium spills over to in the battery package 100. Meanwhile, the efficiency of replacing or supplementing the heat exchange medium can be improved, and the operation is convenient. It is understood that the inlet 121 and the outlet 123 may be disposed at any position of the heat exchange case 110 as long as they communicate with the flow channel 113 inside. In this embodiment, the inlet 121 and the outlet 123 are respectively disposed on the upper surface of the heat exchange box 110, and the inlet 121 and the outlet 123 are located at two ends of the heat exchange box 110. Thus, the heat exchange medium can enter from the inlet 121 on the left side, exchange heat with the battery 130 through the flow passage 113, and then be discharged from the outlet 123 on the right side.

Optionally, the adhesive 150 is a thermally conductive structural adhesive. The adhesive 150 may be a liquid or semi-solid adhesive 150 having a heat conductive function and a structural adhesive function, and is not particularly limited herein. After the adhesive 150 is solidified, the battery 130 can be adhesively fixed to the heat exchange case 110. The heat exchanger can fix and bond the battery 130, and can exchange heat with the battery 130 and the heat exchange box 110 respectively to conduct heat.

The embodiment of the utility model provides a battery package 100, its assembly method and heat management principle are as follows:

the battery 130 is installed in the positioning groove 111, heat-conducting structural adhesive is filled between the battery 130 and the groove wall of the positioning groove 111, the heat-conducting structural adhesive is arranged around the side 131 of the battery 130 after being cured, one surface of the heat-conducting structural adhesive is in contact with the battery 130, the other surface of the heat-conducting structural adhesive is in contact with the groove wall of the positioning groove 111 on the heat exchange box 110, and the battery 130 is fixed on the heat exchange box 110.

The heat exchange medium is introduced from the inlet 121, flows through the flow path 113, exchanges heat with the battery 130, and is discharged from the outlet 123. The heat exchange medium exchanges heat with the groove wall of the positioning groove 111, the groove wall of the positioning groove 111 exchanges heat with the heat-conducting structural adhesive, and the heat-conducting structural adhesive exchanges heat with the battery 130, so that heat management of the battery 130 is realized. If the battery pack 100 needs cooling and heat dissipation, cooling water, refrigerating fluid or cold air may be introduced into the flow channel 113. If the battery pack 100 needs to be heated, hot water, hot oil or hot gas may be introduced into the flow channel 113. This battery package 100 can realize cooling and heating to battery 130 respectively, and heat exchange efficiency is high, simple structure, and the security is high.

To sum up, the embodiment of the present invention provides a battery pack 100, which has the following beneficial effects:

the embodiment of the utility model provides a battery package 100, battery 130 install in constant head tank 111, stable in structure. A flow passage 113 is arranged in the heat exchange box body 110, and a heat exchange medium can be arranged in the flow passage 113. Thus, the heat exchange box body 110 can exchange heat for the heat conducting structure glue, the heat conducting structure glue can exchange heat for the side 131 of the battery 130, the heat exchange area is large, the heat exchange efficiency is high, and the heat exchange uniformity is good. And the heat exchange medium is arranged in the heat exchange box body 110, is not directly contacted with the battery 130, cannot cause damage risks such as infiltration to the battery 130 and the like, and has high safety.

This battery pack 100 simple structure, heat transfer box 110's processing maneuverability is better, and convenient assembling through set up heat conduction structure glue between battery 130 and heat transfer box 110, can also further improve structural stability and heat conduction. The heat exchange case 110 may increase the overall structural rigidity and strength of the battery pack 100, and improve the service life of the battery pack 100. This battery package 100 has the function of high temperature heat dissipation, low temperature heating, and heat exchange efficiency is high, and the thermal management is effectual, is favorable to promoting battery package 100's working property and life.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement 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 pack, comprising:

a battery; the battery is arranged in the positioning groove;

2. The battery pack of claim 1, wherein the depth of the positioning groove is greater than or equal to half the height of the battery.

3. The battery pack according to claim 1, wherein the heat exchange case is provided with an inlet and an outlet respectively communicating with the flow channel.

4. The battery pack according to claim 3, wherein the inlet and the outlet are provided with a flow guide tube, respectively.

5. The battery pack of claim 4, wherein the flow guide tube is protruded from the surface of the heat exchange box.

6. The battery pack of claim 1, wherein the positioning groove is a through groove.

7. The battery pack of claim 1, wherein the adhesive is a thermally conductive structural adhesive.

8. The battery pack of claim 1, wherein the heat exchange box body is made of metal.

9. The battery pack of claim 1, wherein the heat exchange box is of an integrally formed structure.

10. The battery pack according to any one of claims 1 to 9, wherein the positioning groove is not in communication with the flow channel.