CN216928715U

CN216928715U - Heating device for battery module and battery pack

Info

Publication number: CN216928715U
Application number: CN202122662902.XU
Authority: CN
Inventors: 冯富春; 李彦良; 盛军
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-07-08
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses a heating device for a battery module and a battery pack, wherein the heating device for the battery module comprises: electric heating structure and soaking structure, have heat conduction liquid in the soaking structure, electric heating structure is suitable for right the soaking structure heats, so that the soaking structure can heat the electric core group in the battery module. This heating device's overall structure is simpler, and the arrangement space that occupies still less, is more convenient for arrange in the battery package to in the whole volume that reduces the battery package, and this heating device can realize the even heating to the electric core group, so that the heating effect is better.

Description

Heating device for battery module and battery pack

Technical Field

The utility model relates to the technical field of power batteries, in particular to a heating device for a battery module and a battery pack.

Background

Traditional battery package adopts heating plate or liquid cooling system to heat the battery module usually, but the heating form ubiquitous problem that the temperature rise rate of adoption heating plate is low, the difference in temperature is big leads to the even heating effect to the battery module relatively poor, and liquid cooling system architecture is more complicated, with high costs to can occupy a large amount of spaces in the battery package, lead to the overall structure of battery package more complicated, whole volume is great, has the improvement space.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the utility model provides a heating device for a battery module, which can conveniently reduce the whole volume of a battery pack and has better uniform heating effect on an electric core group.

The utility model also provides a battery pack with the heating device for the battery module.

The heating device for a battery module according to an embodiment of the present invention includes: an electrical heating structure; the soaking structure, heat conduction liquid has in the soaking structure, the electrical heating structure is suitable for right the soaking structure heats, so that the soaking structure can heat the electric core group in the battery module.

According to the heating device for the battery module, the overall structure of the heating device is simple, the occupied arrangement space is less, the heating device is more convenient to arrange in a battery pack so as to reduce the overall volume of the battery pack, and the heating device can uniformly heat the electric core group so as to achieve better heating effect.

In addition, according to utility model embodiment's heating device for battery module, can also have following additional technical characterstic:

according to some embodiments of the utility model, the heat soaking structure comprises: the metal heat conducting part is provided with a cavity, and the heat conducting liquid is filled in the cavity.

According to some embodiments of the present invention, the metal heat-conducting member is provided with a liquid injection port and an air exhaust port, and both the liquid injection port and the air exhaust port are communicated with the cavity.

According to some embodiments of the present invention, the liquid injection port and the gas exhaust port are provided on the same side wall of the metal heat-conducting member, and the liquid injection port and the gas exhaust port are remote from each other.

According to some embodiments of the utility model, at least one side wall of the metal heat conducting member is configured as an electric core group heating wall.

According to some embodiments of the utility model, the electric heating structure is disposed on a side wall of the metal heat conducting member away from the heating wall of the electric core set.

According to some embodiments of the present invention, the heating device is configured as an end plate and/or a side plate of the battery module.

According to some embodiments of the utility model, the metal heat-conducting member comprises: aluminum liquid cooling plate.

According to some embodiments of the utility model, the electrical heating structure comprises: ceramic heater

According to another aspect of the present invention, a battery pack includes the above-described heating device for a battery module.

Drawings

FIG. 1 is a schematic structural view of a heating apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a heating apparatus according to an embodiment of the present invention.

Reference numerals:

the heating device 100, the electric heating structure 1, the soaking structure 2, the metal heat conducting piece 21, the cavity 211, the liquid injection port 212, the air exhaust port 213 and the electric core group heating wall 214.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and 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 thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A heating device 100 for a battery module according to an embodiment of the present invention will be described with reference to fig. 1 to 2.

The heating device 100 for a battery module according to an embodiment of the present invention may include: an electrical heating structure 1 and a soaking structure 2.

As shown in fig. 1 and fig. 2, the heating device 100 according to the embodiment of the present invention is suitable for being applied to a battery pack to uniformly heat the electric core pack in the battery module in the battery pack, for example, the heating device can be generally used for heating square and soft-package electric core packs to prevent the battery pack from being affected by normal charging and discharging of the battery pack in a low temperature environment. Because traditional battery package adopts heating plate or liquid cooling system to heat the battery module usually, but the heating form ubiquitous temperature rise rate that adopts the heating plate is low, the big problem of difference in temperature, leads to the even heating effect to the battery module relatively poor, and liquid cooling system architecture is more complicated, with high costs to can occupy a large amount of spaces in the battery package, lead to the overall structure of battery package more complicated, whole volume is great.

Therefore, the embodiment of the utility model designs the heating device 100 which has a simpler structure, occupies less arrangement space, and can uniformly heat the electric core pack in the battery module. Therefore, the battery pack has a simpler overall structure and a smaller overall volume.

Wherein, have heat conduction liquid in the soaking structure 2, electric heating structure 1 is suitable for and heats soaking structure 2 to make soaking structure 2 can heat the electric core group in the battery module. The soaking structure 2 is a structure which utilizes the uniform heat conduction characteristic of liquid to uniformly distribute the heat received by the soaking structure and then utilizes the structure after soaking distribution to uniformly heat the electric core group. The usable circular telegram that switches on of electrical heating structure 1 promptly produces the heat, and electrical heating structure 1 can be with the heat transfer that produces for soaking structure 2, after soaking structure 2 will receive the heat that comes carry out evenly distributed back and heat the electric core group to can realize the even heating to the electric core group, thereby make the heating effect better.

That is to say, because the electric heating structure 1 cannot realize the uniform heating of the electric core assembly directly, the embodiment of the present invention provides the uniform heating structure 2 capable of performing uniform heating between the electric heating structure 1 and the electric core assembly, so as to realize a better heating effect on the electric core assembly.

Owing to adopt electric heating structure 1's electrical heating form, consequently, need not to set up parts such as liquid cooling pipeline to the space that makes to occupy still less, be more convenient for arrange, and electrical heating structure 1 can also come corresponding adjustment electrical heating structure 1's heating power to the different heating demands of different battery modules in the battery package, so that the heating effect is better. That is, the heating apparatus 100 according to the embodiment of the present invention has advantages of convenient arrangement and good heating effect.

According to the heating device 100 for the battery module in the embodiment of the utility model, the overall structure of the heating device 100 is simpler, the occupied arrangement space is less, the heating device 100 can be more conveniently arranged in a battery pack so as to reduce the overall volume of the battery pack, and the heating device 100 can uniformly heat the electric core group so as to achieve better heating effect.

In connection with the embodiments shown in fig. 1 and 2, the soaking structure 2 includes: the metal heat conducting piece 21 is provided with a cavity 211 in the metal heat conducting piece 21, and heat conducting liquid is suitable for being filled in the cavity 211. Soaking structure 2 is the heat conduction structure who comprises metal casing and the heat conduction liquid of filling in metal casing promptly, because cavity 211 is inside to have heat conduction liquid, consequently can realize the effect of even heat conduction, so as to realize the even heating to electric core group, thereby can avoid electric core group to appear the damage phenomenon that local high temperature and lead to, and metal heat conduction spare 21 can directly transfer heat with electric core group contact, because the thermal conductivity of metal is higher, consequently, can realize the rapid heating to electric core group. From this, soaking structure 2 can realize the quick even heating to electric core group to make the heating effect better.

Preferably, the heat conducting liquid is suitable for filling the cavity 211, so that the heat exchange efficiency of the metal heat conducting member 21 to all positions of the electric core assembly is equal, and the soaking structure 2 can realize a more uniform heat exchange effect.

As shown in FIG. 1, the metal heat-conducting member 21 is provided with a liquid inlet 212 and an air outlet 213, and both the liquid inlet 212 and the air outlet 213 are communicated with the chamber 211. Wherein, operating personnel is suitable for from annotating liquid mouth 212 to annotating heat conduction liquid in the cavity 211, and when annotating the liquid, the air in the cavity 211 is suitable for outwards discharging from gas vent 213 to guarantee that heat conduction liquid can fill up and fill up cavity 211, and after heat conduction liquid filling was accomplished, can use the shutoff structure to annotate liquid mouth 212 and gas vent 213 shutoff, in order to avoid the emergence of weeping phenomenon.

Further, the liquid injection port 212 and the air outlet port 213 are disposed on the same side wall of the metal heat-conducting member 21, so as to prevent the heat-conducting liquid from directly flowing out of the air outlet port 213 when the heat-conducting liquid is injected into the cavity 211, and the liquid injection port 212 is adapted to be away from the air outlet port 213, so as to ensure the stability of air exhaust from the air outlet port 213, and ensure that air in the cavity 211 can be exhausted.

Referring to fig. 2, at least one side wall of the metal heat conducting member 21 is constructed as the electric core group heating wall 214, the metal heat conducting member 21 is suitable for uniformly heating the electric core group through the electric core group heating wall 214, wherein, the electric heating structure 1 is arranged on the side wall of the metal heat conducting member 21 away from the electric core group heating wall 214, namely, the electric core group is kept away from the electric heating structure 1, so as to avoid the electric heating structure 1 to directly heat the electric core group, thereby enabling the metal heat conducting member 21 to be uniformly heated and then to uniformly heat the electric core group. For example, the electric heating structure 1 is adapted to be fixed on the upper wall of the metal heat-conducting member 21, while the lower wall of the metal heat-conducting member 21 is configured as the electric core group heating wall 214.

As a preferred embodiment, the heating device 100 is configured as an end plate and/or a side plate of the battery module to uniformly heat the end wall and/or the side wall of the electric core pack directly. That is, the heating device 100 may be configured as a part of the battery module to avoid occupying too much arrangement space in the battery pack, for example, may not occupy the space at the bottom of the battery pack, so as to reduce the overall thickness of the battery pack, thereby being able to improve the ground clearance of the entire vehicle, and also effectively improve the energy density of the battery pack.

Of course, the heating device 100 may be constructed as a heating structure independent from the battery module, and also uniformly heats the electric core pack.

With reference to the embodiment shown in fig. 1 and 2, the metal heat-conducting member 21 includes: the aluminum liquid cooling plate, the aluminum structure plate who takes the cavity promptly, adopt aluminum structure plate not only weight lighter to in order to realize the lightweight of battery package, corrosion resistance is better moreover, so that its overall stability is better, and heat conduction rate is higher, so that realize rapid heating. Specifically, 1 heating aluminium structure board of electrical heating structure, the heat conduction liquid in the aluminium structure board heating cavity 211 then evenly transmits the heat to the electric core group, has the heating efficiency height, advantage that the difference in temperature is little.

As shown in fig. 1 and 2, the electric heating structure 1 includes: a ceramic heater. The ceramic heater has higher heating efficiency, smaller volume and more convenient arrangement. In particular, the number of the ceramic heaters is two, and the two ceramic heaters are arranged in the middle of the upper wall of the aluminum liquid cooling plate at intervals so as to realize uniform and rapid heating of the aluminum liquid cooling plate.

A battery pack according to another aspect of the embodiment of the present invention includes the heating device 100 for a battery module described in the above embodiment. Other configurations for the battery pack are well known to those skilled in the art and thus will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A heating device (100) for a battery module, comprising:

an electric heating structure (1);

soaking structure (2), have heat conduction liquid in soaking structure (2), electrical heating structure (1) is suitable for right soaking structure (2) heats, so that soaking structure (2) can heat the electric core group in the battery module.

2. The heating device (100) for a battery module according to claim 1, wherein the heat equalizing structure (2) comprises: the heat conduction liquid heat conduction device comprises a metal heat conduction piece (21), wherein a cavity (211) is formed in the metal heat conduction piece (21), and the heat conduction liquid is filled in the cavity (211).

3. The heating device (100) for a battery module according to claim 2, wherein the metal heat-conducting member (21) is provided with a liquid injection port (212) and an air exhaust port (213), and the liquid injection port (212) and the air exhaust port (213) are both communicated with the cavity (211).

4. The heating device (100) for a battery module according to claim 3, wherein the liquid injection port (212) and the air outlet (213) are opened on the same side wall of the metal heat-conductive member (21), and the liquid injection port (212) and the air outlet (213) are distant from each other.

5. The heating device (100) for a battery module according to claim 2, wherein at least one sidewall of the metal heat-conductive member (21) is configured as a core pack heating wall (214).

6. The heating device (100) for battery module according to claim 5, wherein the electric heating structure (1) is disposed on a side wall of the metal heat-conducting member (21) away from the electric core group heating wall (214).

7. The heating device (100) for battery modules according to claim 1, wherein the heating device (100) is configured as an end plate and/or a side plate of the battery module.

8. The heating device (100) for a battery module according to claim 2, wherein the metal heat-conductive member (21) comprises: aluminum liquid cooling plate.

9. The heating device (100) for a battery module according to any one of claims 1 to 8, wherein the electric heating structure (1) comprises: a ceramic heater.

10. A battery pack, characterized by comprising the heating device (100) for a battery module according to any one of claims 1 to 9.