CN212874597U

CN212874597U - Heat dissipation assembly, battery box body and storage battery

Info

Publication number: CN212874597U
Application number: CN202022038609.1U
Authority: CN
Inventors: 罗俊; 韦银涛; 陆毅成; 李何鑫; 蒙玉宝
Original assignee: Eve Power Co Ltd
Current assignee: Eve Power Co Ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-04-02
Anticipated expiration: 2030-09-16

Abstract

The utility model relates to the technical field of battery heat dissipation, and specifically discloses a heat dissipation component, a battery case and a storage battery. The heat dissipation assembly of the present invention comprises a base plate and a heat pipe, the base plate is arranged on one side of the battery core, a accommodating cavity is arranged in the base plate, the heat pipe comprises a first part and a second part communicating with the first part, and at least part of the first part is located in the accommodating cavity , the second part is located outside the base plate, the first part and the second part are arranged at an included angle, and the second part is inclined toward the direction away from the ground. The heat dissipation assembly of the utility model has the advantages of simple structure, low cost, good cooling effect, self-circulation operation, and avoidance of hidden dangers of liquid leakage.

Description

Heat dissipation assembly, battery box body and storage battery

Technical Field

The utility model relates to a battery heat dissipation technical field especially relates to a radiator unit, battery box and battery.

Background

Most batteries in the existing market all generate heat when in use, and if the batteries are overheated, the service lives of the batteries are easily damaged, and even the batteries are ignited and exploded, so that the arrangement of a heat dissipation assembly for the batteries is very necessary. For the battery box body used for loading the battery, the heat dissipation mode mainly includes three modes of natural heat dissipation, air cooling and liquid cooling:

1. the natural heat dissipation structure is simple, the cost is low, but the efficiency is low, and the cooling effect is poor;

2. the air cooling mode is most commonly used, the structural design and the cost belong to a medium degree, but the cooling is uneven, the cooling effect is poor, and a cooling fan belongs to a vulnerable part and is complex to control;

3. the liquid cooling mode is efficient, and the cooling effect is good, nevertheless need arrange the liquid cooling pipeline when utilizing the coolant liquid circulation to dispel the heat, occupies a large amount of spaces of battery box, and the structure is complicated moreover with high costs, still has the weeping hidden danger.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a radiator unit, battery box and battery, its simple structure, with low costs, the cooling effect is good, can self-loopa operation, and can avoid the weeping hidden danger.

To achieve the purpose, the embodiment of the present invention adopts the following technical solutions:

in a first aspect, a heat dissipation assembly is provided, which includes a substrate and a heat pipe, the substrate is disposed on one side of an electrical core, a containing cavity is disposed in the substrate, the heat pipe includes a first portion and a second portion communicated with the first portion, at least a part of the first portion is located in the containing cavity, the second portion is located outside the substrate, the first portion and the second portion are disposed at an included angle, and the second portion inclines towards a direction deviating from the ground.

As a preferable scheme of the heat dissipation assembly, a plurality of accommodating cavities are provided in the substrate, and each accommodating cavity is provided with a first portion of one heat pipe.

As a preferable mode of the heat dissipating assembly, each of the second portions is provided with a heat dissipating fin.

As a preferable scheme of the heat dissipation assembly, a plurality of the heat dissipation fins are arranged in parallel on the second portion, and each of the heat dissipation fins is connected with each of the second portions.

As a preferable mode of the heat dissipation assembly, the length of the first portion includes a first length and a second length, and the first portion of the first length and the first portion of the second length are alternately arranged.

As a preferable scheme of the heat dissipation assembly, the substrate includes an upper plate and a lower plate which are stacked, a side surface of the upper plate close to the lower plate is provided with a plurality of first grooves, a side surface of the lower plate close to the upper plate is provided with a plurality of second grooves, and the first grooves and the second grooves form the accommodating cavities.

As a preferred scheme of the heat dissipation assembly, an adhesive layer is arranged between the heat pipe and the accommodating cavity.

As a preferred scheme of the heat dissipation assembly, a heat conduction silica gel plate is arranged between the substrate and the battery core.

In a second aspect, a battery box is provided, which comprises a first side plate, a second side plate, a cover plate and a heat dissipation assembly, wherein a through hole capable of accommodating an electric core is formed between the first side plate and the second side plate, the cover plate covers one end of the through hole, and the heat dissipation assembly covers the other end of the through hole.

In a third aspect, a battery is provided, which includes an electric core and the battery box, wherein the electric core is disposed in the through hole of the battery box.

The utility model discloses beneficial effect does:

form radiator unit through base plate and heat pipe, the base plate sets up in one side of electric core, is provided with in the base plate and holds the chamber, and a heat pipe is a special material that has quick samming characteristic, and its hollow metal pipe body makes it have the light characteristics of matter, and the characteristic of its quick samming makes it have excellent heat superconductivity ability. And hollow metal pipe body can also hold the liquid phase change material at normal temperature, the heat pipe includes the first portion and the second portion that communicates with the first portion, the at least part of first portion is located holds the intracavity, phase change material in the first portion absorbs heat to the electricity core, phase change material gasification after absorbing heat moves to the second portion, because the second portion is located outside the base plate, make gaseous phase change material can carry out the heat exchange with the air and cool off and reliquefy, the realization can outwards shift the effect of the liquid of electricity core. Moreover, the first part can evenly absorb the heat that the electricity core gived off, and first part and second part are the contained angle setting, and the second part inclines towards the direction that deviates from ground, can flow back liquefied phase change material to the first part through the action of gravity to accelerate the heat exchange efficiency of heat pipe. Therefore, the utility model discloses the radiator unit simple structure, it is with low costs, the cooling effect is good, can self-loopa operation, and can avoid the weeping hidden danger.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic perspective structural view of a heat dissipation assembly according to an embodiment of the present invention.

Fig. 2 is a schematic view of a partial cross-sectional structure of a heat dissipation assembly according to an embodiment of the present invention.

Fig. 3 is a schematic view of a partial structure of a heat dissipation assembly according to an embodiment of the present invention.

Fig. 4 is an exploded schematic view of a battery box according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of an explosion structure of a storage battery according to an embodiment of the present invention.

Fig. 6 is a schematic view of an assembly structure of a storage battery according to an embodiment of the present invention.

In the figure:

1. a heat dissipating component; 11. a substrate; 1101. an upper plate; 1102. a lower plate; 111. an accommodating chamber; 1111. a first groove; 1112. a second groove; 12. a heat pipe; 121. a first portion; 122. a second portion; 13. a heat dissipating fin; 14. welding the layers; 15. an adhesive layer; 16. a heat-conducting silica gel plate; 200. a battery case; 2. a first side plate; 3. a second side plate; 4. a cover plate; 5. a through hole; 300. and (5) battery cores.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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.

Referring to fig. 1, an embodiment of the present invention provides a heat dissipation assembly 1, including a substrate 11 and a heat pipe 12, the substrate 11 is disposed on one side of an electrical core 300, a containing cavity 111 is disposed in the substrate 11, the heat pipe 12 includes a first portion 121 and a second portion 122 communicated with the first portion 121, at least a part of the first portion 121 is located in the containing cavity 111, the second portion 122 is located outside the substrate 11, the first portion 121 and the second portion 122 are disposed at an included angle, and the second portion 122 is inclined toward a direction deviating from the ground.

Form radiator unit 1 through base plate 11 and heat pipe 12, base plate 11 sets up in the one side of electric core 300, is provided with in the base plate 11 and holds chamber 111, and heat pipe 12 a special material that has quick samming characteristic, and the hollow metal pipe body of it makes it have light in weight's characteristics, and the characteristic of its quick samming makes it have excellent heat superconductivity. The hollow metal pipe body can also contain a phase change material in a liquid state at normal temperature, the heat pipe 12 includes a first portion 121 and a second portion 122 communicated with the first portion 121, at least a part of the first portion 121 is located in the containing cavity 111, the battery cell 300 absorbs heat through the phase change material in the first portion 121, the phase change material absorbs heat and is gasified to move towards the second portion 122, and the second portion 122 is located outside the substrate 11, so that the gaseous phase change material can exchange heat with air to be cooled and re-liquefied, and the effect of transferring the liquid of the battery cell 300 outwards is achieved. Moreover, the first portion 121 can uniformly absorb heat emitted from the battery cell 300, the first portion 121 and the second portion 122 are arranged at an included angle, and the second portion 122 is inclined towards a direction away from the ground, so that the liquefied phase change material can be guided back to the first portion 121, thereby accelerating the heat exchange efficiency of the heat pipe 12. Therefore, the utility model discloses heat radiation assembly 1 simple structure, it is with low costs, the cooling effect is good, can self-loopa operation, and can avoid the weeping hidden danger.

The way of fixing the first portion 121 of the heat pipe 12 in the accommodating cavity 111 may be various, for example, one heat pipe 12 is disposed in one accommodating cavity 111, or a plurality of heat pipes 12 are disposed in one accommodating cavity 111, and each heat pipe 12 is fixed in one accommodating cavity 111 by a snap structure. In one embodiment, with continued reference to fig. 1, a plurality of receiving cavities 111 are provided in the substrate 11, each receiving cavity 111 is provided with a first portion 121 of one heat pipe 12, a plurality of heat pipes 12 can be provided on the substrate 11, and the heat pipes 12 can be further fixed by the plurality of receiving cavities 111, preventing the heat pipes 12 from being deformed.

In particular, with continued reference to fig. 1, each second portion 122 is provided with a heat dissipation fin 13 thereon, and the heat dissipation fin 13 can increase the contact area between the second portion 122 and the air, thereby improving the heat exchange efficiency between the second portion 122 and the air and improving the heat dissipation effect of the heat dissipation assembly 1 according to the embodiment of the present invention.

Further, with continued reference to fig. 1, a plurality of heat dissipating fins 13 are disposed in parallel on the second portion 122, and each heat dissipating fin 13 is connected to each second portion 122. This embodiment can all be connected every second part 122 with same radiating fin 13, and is provided with a plurality of radiating fins 13 on the second part 122, and every radiating fin 13 parallel arrangement can guarantee the heat dissipation uniformity of every second part 122, makes the utility model discloses the heat dissipation of radiator unit 1 is more even.

In addition, with continued reference to fig. 1, the lengths of the first portions 121 include a first length and a second length, and the first portions 121 of the first length and the first portions 121 of the second length are staggered to uniform the efficiency of heat conduction on the substrate 11. In this embodiment, the first portion 121 of the first length and the first portion 121 of the second length are disposed in the accommodating cavity 111, and the magnitude relationship between the first length and the second length is not unique, for example, when the first length is greater than the second length, the first portion 121 of the second length can assist in absorbing heat from the first portion 121 of the first length and guiding the heat to the second portion 122 together, and the heat conduction efficiency of the heat pipe 12 can be improved while the length of the heat pipe 12 is reduced. More preferably, the first portion 121 with the second length is disposed in the middle of the substrate 11, and the first portion 121 with the first length is disposed in the accommodating cavity 111 and near the end of the substrate 11, so that heat of the substrate 11 in which the accommodating cavity 111 is located can be absorbed in multiple directions.

Similarly, when the first length is smaller than the second length, the first portion 121 with the first length can assist in absorbing heat from the first portion 121 with the second length and lead the heat to the second portion 122, and the achieved effects are similar and are not described again.

In another embodiment, referring to fig. 2, the substrate 11 includes an upper plate 1101 and a lower plate 1102 which are stacked, a side of the upper plate 1101 adjacent to the lower plate 1102 is provided with a plurality of first grooves 1111, a side of the lower plate 1102 adjacent to the upper plate 1101 is provided with a plurality of second grooves 1112, and the first grooves 1111 and the second grooves 1112 form the receiving cavity 111. In this embodiment, the substrate 11 is separated from the accommodating cavity 111, so that the processing difficulty of the substrate 11 can be reduced, and the processing cost can be saved.

Preferably, with continued reference to fig. 2, a solder layer 14 is disposed between the upper plate 1101 and the lower plate 1102, and the upper plate 1101 and the lower plate 1102 are connected by a soldering process, so as to ensure the sealing property and the connection strength of the substrate 11.

Optionally, with continued reference to fig. 2, an adhesive layer 15 is disposed between the heat pipe 12 and the accommodating cavity 111, and the adhesive layer 15 is used to improve the connection strength between the heat pipe 12 and the accommodating cavity 111. More preferably, the adhesive layer 15 is formed by a heat-conducting structural adhesive, so that the heat-conducting efficiency between the heat pipe 12 and the accommodating cavity 111 can be improved while the connection strength between the heat pipe 12 and the accommodating cavity 111 is ensured.

In another preferred embodiment, referring to fig. 3, a thermally conductive silicone rubber sheet 16 is disposed between the substrate 11 and the battery cell 300. The heat-conducting silica gel is prepared by mixing organic silica gel serving as a main body with polymer materials such as filling materials, heat-conducting materials and the like, and has good heat-conducting and electric-insulating properties. The utility model discloses heat conduction silica gel plate 16 can promote the heat conduction efficiency between electric core 300 and the base plate 11, promotes radiator unit 1's radiating effect.

Referring to fig. 4, the embodiment of the present invention further provides a battery box 200, including first curb plate 2, second curb plate 3, apron 4 and radiator module 1 of any one of the above-mentioned embodiments, be provided with between first curb plate 2 and the second curb plate 3 and hold through-hole 5 of electric core 300, apron 4 covers the one of them one end that closes through-hole 5, and radiator module 1 covers the other end that closes through-hole 5. The heat dissipation assembly 1 in this embodiment may have the same structure and achieve the same effect as the heat dissipation assembly 1 in the above embodiment, and details are not described in this embodiment.

Referring to fig. 5 and fig. 6, the embodiment of the present invention further provides a storage battery, which includes a battery cell 300, and the battery box 200 of the above embodiment, wherein the battery cell 300 is disposed in the through hole 5 of the battery box 200. The battery box 200 in this embodiment may have the same structure and achieve the same effect as the battery box 200 in the above embodiments, and the description of this embodiment is omitted.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in a descriptive sense or positional relationship based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a heat dissipation assembly, its characterized in that, includes base plate and heat pipe, the base plate sets up the one side at electric core, be provided with in the base plate and hold the chamber, the heat pipe include the first portion and with the second part of first portion intercommunication, at least part of first portion is located hold the intracavity, the second part is located outside the base plate, the first portion with the second part is the contained angle setting, just the second part orientation deviates from the direction slope on ground.

2. The heat dissipation assembly of claim 1, wherein a plurality of receiving cavities are provided in the base plate, each receiving cavity being provided with a first portion of one of the heat pipes.

3. The heat dissipation assembly of claim 2, wherein each of the second portions has a heat dissipation fin disposed thereon.

4. The heat sink assembly of claim 3, wherein a plurality of said fins are disposed in parallel on said second portion, each said fin connecting each said second portion.

5. The heat dissipation assembly of claim 2, wherein the lengths of the first portions include first lengths and second lengths, the first portions of the first lengths and the first portions of the second lengths being staggered.

6. The heat dissipating assembly of claim 2, wherein the base plate comprises a stack of an upper plate and a lower plate, wherein a side of the upper plate adjacent to the lower plate is provided with a first plurality of grooves, and a side of the lower plate adjacent to the upper plate is provided with a second plurality of grooves, wherein the first and second grooves form the receiving cavity.

7. The heat dissipation assembly of claim 1, wherein an adhesive layer is disposed between the heat pipe and the receiving cavity.

8. The heat dissipation assembly of claim 1, wherein a thermally conductive silicone plate is disposed between the substrate and the electrical core.

9. A battery box body is characterized by comprising a first side plate, a second side plate, a cover plate and the heat dissipation assembly of any one of claims 1 to 8, wherein a through hole capable of accommodating an electric core is formed between the first side plate and the second side plate, one end of the through hole is covered by the cover plate, and the other end of the through hole is covered by the heat dissipation assembly.

10. A storage battery, comprising a battery cell and the battery case of claim 9, wherein the battery cell is disposed in the through hole of the battery case.