CN212162032U

CN212162032U - Battery structure and battery cooling system

Info

Publication number: CN212162032U
Application number: CN202020455153.6U
Authority: CN
Inventors: 李义; 贾琢成; 郭海军; 陈小明
Original assignee: Dongguan Poweramp Technology Ltd
Current assignee: Dongguan Poweramp Technology Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-15
Anticipated expiration: 2030-03-31

Abstract

The embodiment of the application provides a battery structure, including casing, electric core unit and heat radiation structure, electric core unit reaches heat radiation structure all accept in the casing, heat radiation structure includes the heat-conducting plate, the heat-conducting plate sets up in the clearance between the electric core unit, the heat-conducting plate is equipped with first dead slot, the casing includes the curb plate, the curb plate is equipped with the second dead slot, the second dead slot with first dead slot butt joint is in order to form the wind channel. The embodiment of the application also provides a battery cooling system. The battery structure and battery cooling system that this application embodiment provided, the radiating effect is better good, can effectively improve the radiating efficiency after the battery uses to can shorten the battery and discharge the cooling time after the high rate, promote user's experience.

Description

Battery structure and battery cooling system

Technical Field

The application relates to a battery structure and a battery cooling system.

Background

Generally, electric tools such as unmanned aerial vehicles are discharged for high rate when using, and the temperature of battery is higher in the discharge process, even for the laminate polymer battery that the heat dissipation is better, battery temperature also can usually exceed 60 degrees, will far exceed the charge temperature of battery. In the working process of electric tools such as unmanned aerial vehicles, the battery needs to be cooled for a long enough time after discharging so that the temperature of the battery can be reduced to the rechargeable temperature.

In the prior art, the heat of the battery is conducted to the shell through the heat dissipation structure of the battery inner module, and the battery is cooled after being discharged by utilizing the natural heat dissipation of the shell. However, the outer case of the entire battery is an integral sealing structure, and the heat dissipation capability of the outer case is limited. In fact, the cooling time required for cooling the battery to a temperature at which the battery can be charged after the battery is discharged at the maximum rate also needs at least half an hour, and the heat dissipation efficiency is not good. In addition, some battery manufacturers do not have a heat dissipation measure during module design, that is, heat generated by the battery core cannot be effectively conducted to the shell, so that the cooling time required after the battery is discharged is prolonged.

SUMMERY OF THE UTILITY MODEL

In view of this, it is desirable to provide a battery structure and a battery heat dissipation system, which have better heat dissipation effect, can effectively improve the heat dissipation efficiency of the battery after use, and can shorten the cooling time of the battery after high-rate discharge, thereby improving the user experience.

One embodiment of the application provides a battery structure, which comprises a shell, a battery cell unit and a heat dissipation structure, wherein the battery cell unit and the heat dissipation structure are accommodated in the shell; the shell comprises a side plate, the side plate is provided with a second empty groove, and the second empty groove is in butt joint with the first empty groove to form an air duct.

According to some embodiments of the present application, the heat-conducting plate is disposed in a gap between every two adjacent cell units.

According to some embodiments of the present application, the battery structure further comprises a sealing assembly disposed in a gap between the thermally conductive plate and the side plate.

According to some embodiments of the present application, the casing further includes a bottom plate, two end plates respectively connected to two ends of the bottom plate vertically, the bottom plate, the two side plates and the two end plates form an accommodating space together, and the battery cell unit and the heat dissipation structure are accommodated in the accommodating space.

According to some embodiments of the present application, the housing further comprises a cover plate, and the cover plate is detachably connected to the two side plates and the two end plates.

According to some embodiments of the present application, the battery structure further comprises a first interface disposed on the cover plate, the first interface being configured to be electrically connected to a second interface of a charger.

According to some embodiments of the present application, the battery structure further includes a temperature sensor for sensing a temperature of the cell unit.

According to some embodiments of the present application, the thermally conductive plate is an elastic thermally conductive material.

According to some embodiments of the present application, a gap between every two adjacent cell units is between 3 mm and 5 mm.

An embodiment of the present application further provides a battery heat dissipation system, including a fan and the battery structure as described above, wherein the air outlet of the fan is aligned with the second empty slot on the side plate.

According to some embodiments of the present application, the battery heat dissipation system further includes an air guiding pipe, an air inlet of the air guiding pipe is butted with the air outlet of the fan, and an air outlet of the air guiding pipe is butted with the second empty groove on the side plate.

According to some embodiments of the present application, the battery heat dissipation system further includes a second interface disposed at a side portion of the air duct, and the second interface is electrically connected to the first interface

The battery structure and battery cooling system that this application embodiment provided, through set up the heat-conducting plate in per two adjacent in the clearance between the electricity core unit, be equipped with first dead slot at the heat-conducting plate, and the curb plate of casing is equipped with the second dead slot, so that the second dead slot with first dead slot butt joint is in order to form the wind channel. Therefore, the battery structure provided by the embodiment of the application can effectively improve the heat dissipation efficiency of the battery after use, shorten the cooling time of the battery after high-rate discharge and improve the user experience.

Drawings

Fig. 1 is a schematic structural diagram of a battery heat dissipation system according to an embodiment of the present application.

Fig. 2 is an exploded perspective view of a battery structure according to an embodiment of the present application.

Fig. 3 is an exploded perspective view of the heat dissipation structure shown in fig. 2.

Fig. 4 is a schematic structural view of the cooling module shown in fig. 1.

Description of the main elements

Battery heat dissipation system 100

Battery construction 10

Side plate 11

Second empty groove 112

End plate 12

Cover plate 13

Base plate 14

Cell unit 15

Gap 16

Heat dissipation structure 17

Heat conducting plate 172

First empty groove 174

First interface 18

Temperature sensor 19

Fan 20

Air guide pipe 30

Charger 40

Second interface 42

The following detailed description will explain the present application in further detail in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application.

All other embodiments that can be obtained by a person skilled in the art without inventive step based on the embodiments in this application are within the scope of protection of this application.

Referring to fig. 1, an embodiment of the present application provides a battery heat dissipation system 100. The battery heat dissipation system 100 includes a battery structure 10, a fan 20, and an air duct 30. The fan 20 is connected to the battery structure 10 through the air duct 30, so as to achieve the purpose of rapidly cooling the battery structure.

Referring to fig. 2 and fig. 3, in the present embodiment, the battery structure 10 includes a cell unit 15 and a heat dissipation structure 17. The battery cell unit 15 and the heat dissipation structure 17 are accommodated in the casing.

Specifically, the housing includes a side plate 11, a bottom plate 14, and two end plates 12 vertically connected to two ends of the bottom plate 14. The bottom plate 14, the two side plates 11 and the two end plates 12 together form a receiving space (not shown), so that both the cell unit 15 and the heat dissipation structure 17 can be received in the receiving space.

In the embodiment of the present application, the heat dissipation structure 17 includes a heat conduction plate 172, and the heat conduction plate 172 is disposed in the gap 16 between the cell units 15. In a preferred embodiment, the heat conducting plate 172 is preferably disposed in the gap 16 between every two adjacent cell units 15.

It can be understood that the heat conducting plate 172 has a heat conducting effect, and the heat conducting plate 172 is disposed outside the battery cell unit 15, and the side walls of the heat conducting plate 172 protect the battery cell units on both sides of the air duct, so as to prevent the battery cell units from being directly exposed in the air, thereby protecting and dissipating heat of the battery cell units. The number of the heat conducting plates 172 shown in the embodiment of the present application is merely an example, and the number of the heat conducting plates 172 may be adjusted according to the number of the cell units 15, and is not particularly limited herein.

Further, the heat conductive plate 172 may be provided with a first empty groove 174, and the side plate 11 may be provided with a second empty groove 112. That is, the second empty slot 112 may interface with the first empty slot 174 to form an air duct. Therefore, the cold air blown out by the fan 20 can be blown to the air duct through the air guide pipe 30, so as to achieve the purpose of rapidly cooling the battery cell unit 15.

It is understood that, since the heat conducting plate 172 has a heat conducting function, the heat generated by the cell unit 15 can be conducted to the heat conducting plate 172. In the present embodiment, the gap 16 between every two adjacent cell units 15 is preferably between 3 mm and 5 mm. Preferably, the heat conducting plate 172 is made of elastic heat conducting material. In another preferred embodiment, the heat conducting plate 172 can also be made of other metal heat conducting materials.

In the preferred embodiment of the present application, the housing may further include a cover plate 13, and the cover plate 13 is detachably connected to the two side plates 11 and the two end plates 12. Specifically, the cover plate 13 and the two side plates 11 and the two end plates 12 may be connected by screws or snaps to form a sealed housing, so as to ensure the sealing performance of the battery.

The battery structure 10 further includes a sealing component, specifically, the sealing component is preferably a sealant, and the sealing colloid is disposed in the gap between the heat conducting plate 172 and the side plate 11, so as to seal the heat conducting plate 172 and the edge of the housing, and ensure that the waterproof grade of the whole battery reaches IP 55.

Referring to fig. 4, it can be understood that the air outlet of the fan 20 is connected to the second empty slot 112 of the side plate 11.

Specifically, two ends of the air guide duct 30 are respectively connected to the fan 20 and the air inlet of the battery, and the joint of the two ends of the air guide duct is sealed to prevent the air from leaking. Wherein, the end connected with the air guide pipe is an air outlet of the fan 20 as an air source. The fan 20 may be an axial fan or a vortex fan, in order to form a larger wind pressure, in a preferred embodiment, the fan 20 preferably uses a vortex fan or a centrifugal fan, the other end connected to the air duct is a side air inlet of the battery, and is connected to the air duct of the battery assembly, that is, the wind path formed in the system is, in order: fan-air duct-battery structured air duct-air.

Therefore, the cold air blown out from the air outlet of the fan 20 can directly face the second empty slot 112 on the side plate 11, so that the cold air can pass through the air duct in the battery structure to dissipate heat of the battery cell unit.

In a preferred embodiment, the battery structure further includes the first interface 18, and the battery heat dissipation system 100 further includes the charger 40, that is, the fan 20, the air duct 30 and the charger 40 constitute a cooling component in the system. The charger 40 is provided with a second interface 42, the first interface 18 is disposed on the cover plate 13, the second interface 42 is disposed on the side portion of the air duct 30, and the first interface 18 is electrically connected to the second interface 42. The first interface 18 is arranged on the cover plate 13 of the battery structure, so that the battery structure is electrically connected with the charger.

Therefore, when charging, after the second interface 42 of the charger is inserted into the first interface 18 of the battery structure, the second interface of the charger can fix and limit the battery structure, and the cooling assemblies can also be in seamless butt joint with the air duct in the battery structure in a buckling mode.

Further, the battery structure 10 may further include a temperature sensor 19, where the temperature sensor 19 is configured to sense the temperature of the cell unit 15.

Specifically, after the temperature sensor 19 collects the temperature of the electric core unit, the collected temperature value is fed back to the charger 40, and the charger 40 determines whether the temperature of the electric core unit is greater than or equal to a preset temperature. If the temperature of the battery cell unit exceeds the preset temperature, the charger does not act. If the temperature of the battery unit collected by the temperature sensor is lower than the preset temperature, the charger acts, and charging can be carried out according to the set charging strategy. It is understood that the preset temperature is an allowable charging temperature in the system.

Therefore, the battery structure and the battery cooling system provided by the embodiment of the application have better cooling effect, can effectively improve the cooling efficiency of the battery after use, can shorten the cooling time of the battery after high-rate discharge, reduce the number of standby batteries and improve the user experience.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the equivalents thereof are intended to be embraced therein.

Claims

1. The utility model provides a battery structure, includes casing, electric core unit and heat radiation structure, electric core unit reaches heat radiation structure all accept in the casing, its characterized in that:

the heat dissipation structure comprises a heat conduction plate, the heat conduction plate is arranged in a gap between the cell units, and the heat conduction plate is provided with a first empty groove; and

the shell comprises a side plate, the side plate is provided with a second empty groove, and the second empty groove is in butt joint with the first empty groove to form an air duct.

2. The battery structure of claim 1, wherein: the heat-conducting plate is arranged in a gap between every two adjacent battery cell units.

3. The battery structure of claim 1, wherein: the battery structure further comprises a sealing assembly, and the sealing assembly is arranged in a gap between the heat conducting plate and the side plate.

4. The battery structure of claim 1, wherein: the shell further comprises a bottom plate and two end plates which are respectively and vertically connected to the two ends of the bottom plate, the two side plates and the two end plates form an accommodating space together, and the battery cell unit and the heat dissipation structure are accommodated in the accommodating space.

5. The battery structure of claim 4, wherein: the shell further comprises a cover plate, and the cover plate is detachably connected with the two side plates and the two end plates.

6. The battery structure of claim 5, wherein: the battery structure further comprises a first interface, the first interface is arranged on the cover plate, and the first interface is used for being electrically connected with a second interface of the charger.

7. The battery structure of claim 1, wherein: the battery structure further comprises a temperature sensor for sensing the temperature of the cell unit.

8. The battery structure of claim 1, wherein: the heat conducting plate is made of elastic heat conducting materials.

9. The battery structure of claim 1, wherein: the gap between every two adjacent cell units is between 3 and 5 millimeters.

10. A battery cooling system is characterized in that: the battery structure as claimed in any one of claims 1 to 9, wherein the air outlet of the fan is opposite to the second empty groove on the side plate.

11. The battery heat dissipation system of claim 10, wherein: the battery heat dissipation system further comprises an air guide pipe, an air inlet of the air guide pipe is in butt joint with an air outlet of the fan, and an air outlet of the air guide pipe is in butt joint with the second empty groove in the side plate.

12. The battery heat dissipation system of claim 11, wherein: the battery heat dissipation system further comprises a second interface, the second interface is arranged on the side portion of the air guide pipe, and the second interface is used for being electrically connected with the first interface.