CN210984889U

CN210984889U - Heat dissipation device of power battery

Info

Publication number: CN210984889U
Application number: CN201921777951.4U
Authority: CN
Inventors: 邹慧明; 陈伊宇; 田长青
Original assignee: Technical Institute of Physics and Chemistry of CAS
Current assignee: Technical Institute of Physics and Chemistry of CAS
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-10
Anticipated expiration: 2029-10-22

Abstract

The utility model relates to a power battery thermal management technical field provides a power battery's heat abstractor, and this heat abstractor includes: the heat pipe assembly comprises a plurality of fin assemblies arranged at intervals and a plurality of heat pipe assemblies arranged at intervals; a plurality of battery units which are matched with the heat pipe assemblies and arranged in an array are arranged between the bottoms of the adjacent heat pipe assemblies, and the fin assemblies are arranged between the tops of the adjacent heat pipe assemblies. The utility model provides a heat abstractor is through setting up fin subassembly and heat pipe subassembly for at battery charging or the thermal in-process of discharge production, the heat is derived fast through the heat pipe subassembly attached with the battery, and passes to fin subassembly, realizes the battery heat dissipation, and it is inhomogeneous effectively to solve battery temperature distribution, local overheat scheduling problem.

Description

Heat dissipation device of power battery

Technical Field

The utility model relates to a power battery thermal management technical field, in particular to power battery's heat abstractor.

Background

The operation temperature has a prominent influence on the performance of the power battery, the temperature is too high, the internal resistance of the battery is reduced, the rate of harmful chemical reaction in the battery is greatly accelerated, and the cycle life is greatly shortened.

In order to ensure efficient and safe operation of the power battery, an efficient and reliable heat dissipation mode is particularly important. Common battery heat dissipation methods include air-cooled battery heat dissipation, liquid-cooled battery heat dissipation, refrigerant direct-cooled heat dissipation, and the like. The air-cooled heat dissipation mode has the advantages of simple system, no leakage hidden danger and the like, and has good development potential. However, in the prior art, the air is mainly used for transversely sweeping the battery pack to take away the heat of the batteries, and the problems of uneven temperature distribution among the batteries, local overheating and the like often exist.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of above-mentioned technical defect and application demand, this application provides a power battery's heat abstractor, aims at solving current air-cooled heat dissipation mode heat exchange efficiency and hangs down, and the temperature distributes inhomogeneous scheduling problem.

(II) technical scheme

In order to solve the above problem, the utility model provides a power battery's heat abstractor, include: the heat pipe assembly comprises a plurality of fin assemblies arranged at intervals and a plurality of heat pipe assemblies arranged at intervals; a plurality of battery units which are matched with the heat pipe assemblies and arranged in an array are arranged between the bottoms of the adjacent heat pipe assemblies, and the fin assemblies are arranged between the tops of the adjacent heat pipe assemblies.

Further, the heat pipe assembly includes: a plurality of heat pipes; the heat pipes in each heat pipe assembly are sequentially arranged at intervals; the top of the heat pipe is connected with the fin assembly, and the bottom of the heat pipe is abutted to the battery unit.

Further, the heat dissipation device further includes: a battery case; the battery box includes: the upper shell and the lower shell are detachably connected; the battery units are matched with the bottoms of the heat pipe assemblies and are fixedly arranged in the lower shell in an array mode, and the top of each heat pipe assembly and the fin assembly are sleeved in the upper shell.

Further, the heat dissipation device further includes: a heat radiation fan and an air inlet grille; the heat radiation fan is arranged on the side wall of one side of the upper shell, and the air inlet grille is arranged on the side wall of the other side opposite to the heat radiation fan so as to form an air flow channel in the battery box.

Further, the air flow channel is in the same direction as the flow channel formed by each fin assembly.

Further, the fin assembly includes: a plurality of fins; the fins are sequentially arranged at intervals from top to bottom; both sides of each fin are connected to all the heat pipes in the corresponding two heat pipe assemblies.

Further, the heat pipe is a micro-channel aluminum pipe or a flat copper pipe, and the phase-change material is filled in the heat pipe.

Further, the fins are aluminum fins or copper fins, and phase change materials are filled in the fins.

Further, the height of the heat pipe is larger than the height of the positive and negative connecting terminals of the battery unit, and the positive and negative connecting terminals of each battery unit are respectively abutted to the heat pipe.

(III) advantageous effects

The utility model provides a heat abstractor is through setting up fin subassembly and heat pipe subassembly for at battery charging or the thermal in-process of discharge production, the heat is derived fast through the heat pipe subassembly attached with the battery, and passes to fin subassembly, realizes the battery heat dissipation, and it is inhomogeneous effectively to solve battery temperature distribution, local overheat scheduling problem.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 structural diagram of a heat dissipation device according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a heat dissipation device according to an embodiment of the present invention;

fig. 3 is a schematic external structural diagram of a heat dissipation device according to an embodiment of the present invention;

wherein, 1, a battery unit; 2. a heat pipe; 3. a fin; 4. a lower housing; 5. an upper housing; 6. a heat radiation fan; 7. an air inlet grille.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present 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.

An embodiment of the utility model provides a power battery's heat abstractor, as shown in fig. 1, fig. 2 and fig. 3, this heat abstractor includes: a plurality of fin components that the interval was arranged and a plurality of heat pipe components that the interval was arranged. A plurality of battery units 1 matched with the heat pipe assemblies and arranged in an array are arranged between the bottoms of the adjacent heat pipe assemblies, and a fin assembly is arranged between the tops of the adjacent heat pipe assemblies.

Wherein, the number of the fin components and the heat pipe components can be adjusted according to the number of the battery units 1 or the requirement of required cooling. The fin assembly and the heat pipe assembly are both filled with a phase change material.

When the battery unit 1 is charged or discharged to generate heat, the medium in the heat pipe assembly is subjected to phase change, so that the heat is quickly led out through the bottom of the heat pipe assembly attached to the battery unit 1 and is transferred to the fin assembly between the heat pipe assemblies, and the heat dissipation of the battery can be realized. Because the both sides of battery unit 1 have all set up the heat pipe subassembly, increased battery unit 1 and heat radiation structure's area of contact, effectively solve battery temperature distribution inhomogeneous, local overheat scheduling problem.

The embodiment of the utility model provides a heat abstractor is through setting up fin subassembly and heat pipe subassembly for at battery charging or the thermal in-process of discharge production, the heat is derived fast through the heat pipe subassembly attached with the battery, and passes to fin subassembly, realizes the battery heat dissipation, and it is inhomogeneous effectively to solve battery temperature distribution, local overheat scheduling problem.

In accordance with the above embodiments, in a preferred embodiment, as shown in fig. 1, 2 and 3, the heat pipe assembly comprises: a number of heat pipes 2. The heat pipe 2 is a micro-channel aluminum pipe or a flat copper pipe, and the phase-change material is filled in the heat pipe 2. The heat pipes 2 in each heat pipe assembly are arranged at intervals in sequence. The top of the heat pipe 2 is connected with the fin assembly, and the bottom of the heat pipe 2 is abutted against the battery unit 1. The heat pipe 2 is connected with the battery unit 1, and can press the whole battery unit 1 to ensure the close contact between the heat pipe 2 and the battery unit 1, and each heat pipe 2 can release heat of the battery unit 1 abutted against the heat pipe 2, so that local overheating is further prevented.

The height of the heat pipe 2 is greater than that of the positive and negative connecting terminals of the battery units 1, and the positive and negative connecting terminals of each battery unit 1 are respectively abutted against the heat pipe 2, so that the uniformity of the temperature field of the battery units 1 is maintained.

In this embodiment, the heat dissipation device further includes: a battery case. The battery box includes: an upper case 5 and a lower case 4 detachably coupled. The battery unit 1 is fixed in the lower casing 4 in an array arrangement in cooperation with the bottom of the heat pipe assembly, and the top and the fin assembly of each heat pipe assembly are all sleeved in the upper casing 5.

Wherein, heat abstractor still includes: a radiator fan 6 and an air intake grill 7. A heat radiating fan 6 is provided on one side wall of the upper case 5, and an air inlet grill 7 is provided on the other side wall opposite to the heat radiating fan 6 to form an air flow passage in the battery case.

In order to enhance the heat exchange effect, in this embodiment, the air flow channel can be aligned with the flow channel formed by each fin assembly, and the flow channel direction can also be adjusted according to specific conditions to prevent local overheating in the battery box.

Wherein, the fin subassembly includes: a plurality of fins 3. The fin 3 is an aluminum fin or a copper fin, and the fin 3 is filled with a phase-change material. The fins 3 are arranged at intervals from top to bottom in sequence. Both sides of each fin 3 are connected with all the heat pipes 2 in the corresponding two heat pipe assemblies, thereby facilitating the heat transfer.

When the battery unit 1 is charged or discharged to generate heat, a medium in the heat pipe assembly is subjected to phase change, so that the heat is quickly led out from the bottom of the heat pipe assembly attached to the battery unit 1 and is transferred to the fin assembly between the heat pipe assemblies, the heat radiating fan 6 on the side wall of the upper shell 5 sucks air into the battery box through the air inlet grille 7, heat exchange is carried out between the heat radiating fan and the top ends of the fins 3 and the heat pipe 2, the cooling and heat radiation inside the power battery pack are realized, the temperature uniformity of the battery unit 1 is ensured, and the battery heat radiation can be realized. Because the contact area between the battery unit 1 and the heat dissipation structure is increased, the problems of uneven battery temperature distribution, local overheating and the like are effectively solved.

To sum up, the embodiment of the utility model provides a heat abstractor is through setting up fin subassembly and heat pipe subassembly for at battery charging or the thermal in-process of discharge production, the heat is derived fast through the heat pipe subassembly attached with the battery, and passes to fin subassembly, realizes the battery heat dissipation, and it is inhomogeneous effectively to solve battery temperature distribution, local overheat scheduling problem.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A heat dissipation device for a power battery is characterized by comprising:

the heat pipe assembly comprises a plurality of fin assemblies arranged at intervals and a plurality of heat pipe assemblies arranged at intervals; a plurality of battery units which are matched with the heat pipe assemblies and arranged in an array are arranged between the bottoms of the adjacent heat pipe assemblies, and the fin assemblies are arranged between the tops of the adjacent heat pipe assemblies.

2. The heat dissipation device of claim 1, wherein the heat pipe assembly comprises: a plurality of heat pipes; the heat pipes in each heat pipe assembly are sequentially arranged at intervals; the top of the heat pipe is connected with the fin assembly, and the bottom of the heat pipe is abutted to the battery unit.

3. The heat dissipating device of claim 2, further comprising: a battery case;

the battery box includes: the upper shell and the lower shell are detachably connected; the battery units are matched with the bottoms of the heat pipe assemblies and are fixedly arranged in the lower shell in an array mode, and the top of each heat pipe assembly and the fin assembly are sleeved in the upper shell.

4. The heat dissipating device of claim 3, further comprising: a heat radiation fan and an air inlet grille; the heat radiation fan is arranged on the side wall of one side of the upper shell, and the air inlet grille is arranged on the side wall of the other side opposite to the heat radiation fan so as to form an air flow channel in the battery box.

5. The heat sink of claim 4, wherein the air flow channels are oriented in the same direction as the flow channels formed by each of the fin assemblies.

6. The heat dissipating device of claim 3, wherein said fin assembly comprises: a plurality of fins; the fins are sequentially arranged at intervals from top to bottom; both sides of each fin are connected to all the heat pipes in the corresponding two heat pipe assemblies.

7. The heat dissipation device of claim 2, wherein the heat pipe is a microchannel aluminum pipe or a flat copper pipe, and the heat pipe is filled with a phase change material.

8. The heat sink as claimed in claim 6, wherein the fins are aluminum fins or copper fins, and the fins are filled with a phase change material.

9. The heat dissipating device of claim 2, wherein the height of the heat pipe is greater than the height of positive and negative terminals of the battery cells, the positive and negative terminals of each battery cell abutting against the heat pipe, respectively.