CN218849594U

CN218849594U - Intelligent lithium ion battery with active heat dissipation system

Info

Publication number: CN218849594U
Application number: CN202222775006.9U
Authority: CN
Inventors: 刘苏; 李刚; 刘班班; 林立; 赵世兴; 郭兵
Original assignee: Shenzhen Grepow Battery Co Ltd
Current assignee: Shenzhen Grepow Battery Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-04-11
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses a take initiative cooling system intelligence lithium ion battery, which comprises an outer shell, install group battery and initiative cooling system in the shell, initiative cooling system's heat dissipation pipeline is hugged closely on the radiator unit of the outside of group battery. Compared with the prior art, the utility model the advantage be: the utility model discloses effectively improve the security of group battery, extension battery life, this battery can charge at once after using up, improves work efficiency.

Description

Intelligent lithium ion battery with active heat dissipation system

Technical Field

The utility model relates to a battery especially relates to a take initiative cooling system intelligence lithium ion battery.

Background

Along with the development of science and technology, the application of electronic product in daily life, amusement and recreation and agricultural plant protection is more and more popularized, and plant protection unmanned aerial vehicle just is one of them, can realize shooing, unmanned value protection to the plant through plant protection unmanned aerial vehicle to and spraying of pesticide, nutrient water etc.. The power source of the plant protection unmanned aerial vehicle is derived from the lithium ion battery, so the load, the working time, the application scene and the like of the plant protection unmanned aerial vehicle are determined by the performance of the lithium ion battery, along with the increasing load of the plant protection unmanned aerial vehicle, the corresponding requirements on the plant protection lithium ion battery are higher and higher, the temperature is rapidly increased after the high-power discharge of the lithium ion battery, the high-temperature protection of the lithium ion battery is caused, and the plant protection unmanned aerial vehicle is shut down by returning to the air.

Among the Battery product of generally using in the existing market, the PCBA board of group Battery and Battery Management System (Battery Management System, commonly known as BMS) is the integrated design, and the BMS only monitors the temperature of group Battery, reaches and sets for the protection behind the threshold value, does not have output to making plant protection unmanned aerial vehicle return the journey and shut down, and the group Battery radiating mode is the shell heat conduction nature radiating mode, and this mode radiating rate is slow, and outside temperature can transmit to in the group Battery simultaneously.

The inventor discovers in the research that the heat dissipation mode of the battery pack of the plant protection unmanned aerial vehicle is a shell heat conduction natural heat dissipation mode, the heat dissipation speed of the mode is low, and the external temperature can be transmitted to the battery pack. Plant protection unmanned aerial vehicle's operational environment is mostly outdoor, and the flight work in the temperature continuously rise, and can't monitor the heat dissipation, leads plant protection unmanned aerial vehicle work efficiency to reduce, and the lithium ion battery need the used repeatedly that charges after the natural cooling 3 hours, and the work can reduce the lithium ion battery performance under the high temperature, and life-span decay has the risk of thermal runaway.

Therefore, developing an intelligent lithium ion battery with an active heat dissipation system becomes a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned not enough, provide an area initiative cooling system intelligence lithium ion battery.

The above object of the present invention is achieved by the following technical solutions: the utility model provides a take initiative cooling system intelligence lithium ion battery, includes the shell, install group battery and initiative cooling system in the shell, initiative cooling system's heat dissipation pipeline hugs closely on the radiator unit of the outside of group battery.

Further, the shell comprises a bottom shell, a front panel, a back panel, a side frame and a face shell, wherein a BMS battery management system is arranged on the face shell, and a key power supply warning lamp is arranged on the face shell.

Furthermore, a handle is arranged on the face shell.

Further, the group battery includes group battery, keysets and utmost point ear heat dissipation piece, every electric core of group battery all the cladding has the heat dissipation aluminum sheet, the utmost point ear welding that discharges of group battery is on the keysets to detain transparent plastic insulator, correspond keysets welding utmost point ear position trompil on the transparent plastic insulator, trompil department assembles heat conduction silica gel piece respectively, utmost point ear heat dissipation piece compresses tightly on heat conduction silica gel piece.

Furthermore, the active heat dissipation system comprises a liquid pool, a circulating heat dissipation pipeline and a semiconductor refrigerating sheet, wherein the liquid pool is provided with a sealing cover plate, a variable-speed circulating liquid pump is installed in the liquid pool, the liquid pool is provided with a liquid outlet and a liquid return port, and the circulating heat dissipation pipeline is connected between the liquid outlet and the liquid return port; the circulating heat dissipation pipeline passes through the space between the heat dissipation aluminum sheet and the metal shell, is tightly attached to the outer surface of the heat dissipation aluminum sheet and the inner surface of the metal shell, and passes through and is tightly attached to the upper end surface of the lug heat dissipation piece; the refrigerating surface of the semiconductor refrigerating sheet is tightly attached to the side wall of the liquid pool, the other surface of the semiconductor refrigerating sheet is provided with a radiating fin, a heat-conducting silica gel sheet is arranged between the radiating fin and the semiconductor refrigerating sheet, and a radiating fan is arranged on the radiating fin.

Furthermore, a partition plate for limiting the flow is arranged in the liquid pool, so that the insulating cooling liquid stays for a long time at the refrigerating end.

Further, the upper end face of the lug heat dissipation piece is provided with a heat dissipation pipeline embedded groove, and the circulating heat dissipation pipeline is embedded into the heat dissipation pipeline.

Furthermore, the outside of the cooling fan is provided with a dust screen and a waterproof and fireproof heat insulation sheet.

Furthermore, heat conduction silica gel pads are pasted on two sides of the radiating fin and fixed through an aluminum alloy pressing block.

Further, the housing is made of a metal material, the heat dissipation pipe is made of an aluminum pipe, and the liquid bath is made of an aluminum material.

Compared with the prior art, the utility model the advantage be: the utility model discloses effectively improve the security of group battery, extension battery life, this battery can charge at once after using up, improves work efficiency. The utility model discloses a lithium ion battery can use in non-unmanned aerial vehicle trade.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the battery pack of the present invention.

Fig. 3 is a schematic structural diagram of the active heat dissipation system of the present invention.

Detailed Description

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

As shown in fig. 1, an intelligent lithium ion battery with an active heat dissipation system comprises an outer shell, wherein the outer shell is made of a metal material, a battery pack 6 and an active heat dissipation system 7 are installed in the outer shell, a heat dissipation pipeline of the active heat dissipation system 7 is tightly attached to a heat dissipation assembly outside the battery pack 6, the outer shell comprises a bottom shell 2, a front panel 11, a back panel 5, a side frame 10 and a face shell 1, a BMS battery management system 9 is arranged on the face shell 1, a key power supply warning lamp 8 is arranged on the face shell, and a handle 3 is arranged on the face shell 1.

As shown in fig. 2, the battery pack 6 includes a battery pack, an adapter plate and a tab heat dissipation member, each electric core of the battery pack is wrapped with a heat dissipation aluminum sheet 25, a discharge tab of the battery pack is welded on the adapter plate 23, and a transparent plastic insulating member 22 is buckled, the transparent plastic insulating member 22 is provided with a hole corresponding to the position of the welding tab of the adapter plate 23, the hole is provided with a heat conduction silicon sheet 21, and the tab heat dissipation member 20 is tightly pressed on the heat conduction silicon sheet 21.

When the battery pack is in work, the heat of the discharging lug of the battery pack is conducted to the lug heat dissipation piece 20, the lug heat dissipation piece 20 carries out circulating refrigeration heat dissipation through the heat dissipation pipeline, meanwhile, the heat of the battery per se is in contact with the metal shell through the heat dissipation aluminum sheet coated on the outer portion of the battery to carry out heat conduction and heat dissipation, and the active heat dissipation system is in contact with the shell to dissipate heat.

As shown in fig. 3, the active heat dissipation system 7 includes a liquid pool 30, a circulating heat dissipation pipeline 32 and a semiconductor cooling plate 34, the liquid pool 30 is made of aluminum material, the liquid pool 30 is provided with a sealing cover plate, a variable speed circulating liquid pump 31 is installed in the liquid pool 30, a partition plate for limiting flow is installed in the liquid pool 30, so that the insulating cooling liquid stays for a long time at the cooling end, the liquid pool 30 is provided with a liquid outlet 33 and a liquid return port 42, wherein the liquid return port 42 is located at one side of the cooling end, and the liquid outlet 33 is located at the other side; a circulating heat dissipation pipeline 32 is connected between the liquid outlet 33 and the liquid return port 42; the heat dissipation pipeline 32 is made of an aluminum pipe, the circulating heat dissipation pipeline 32 passes through between a heat dissipation aluminum sheet and a metal shell, is tightly attached to the outer surface of the heat dissipation aluminum sheet and the inner surface of the metal shell, passes through and is tightly attached to the upper end face of the lug heat dissipation piece 20, a heat dissipation pipeline embedded groove is formed in the upper end face of the lug heat dissipation piece 20, and the circulating heat dissipation pipeline 32 is embedded into the circulating heat dissipation pipeline embedded groove; the refrigeration face of semiconductor refrigeration piece 34 is hugged closely in liquid pool 30 lateral wall, and semiconductor refrigeration piece 34 another side is equipped with fin 36, is equipped with heat conduction silica gel piece 35 between fin 36 and the semiconductor refrigeration piece 34, heat conduction silica gel pad 40 is pasted to fin 36 both sides to it is fixed through aluminum alloy briquetting 41, install radiator fan 37 on the fin 36, the radiator fan 37 outside is equipped with dust screen 39 and waterproof fireproof heat insulating sheet 38.

The utility model discloses an intelligent initiative cooling system 7 heat dissipation of design reduces the consumption, through BMS power management system 9 monitoring group battery temperature, and initiative cooling system passes through the insulating coolant liquid of variable speed circulating liquid pump 31 drive circulation flow in heat dissipation pipeline 32, reaches the cooling heat dissipation. The active heat dissipation system 7 has two power supply modes, one is battery power supply, and the other is external power supply or charger power supply. BMS power management system 9 monitors the battery pack state, and when the battery pack was in output operation, the battery pack supplied power for initiative cooling system 7, and when the battery was charged to the low electric quantity at high temperature, BMS power management system 9 control charger supplied power for initiative cooling system 7, made the battery pack continue to cool down to safe charging environment after, control charger charged for the battery pack.

The utility model discloses in, each electric core cladding heat dissipation aluminum sheet makes up into the group battery, group battery and metal casing in close contact with, and group battery heat conduction is to the metal casing heat dissipation, and the group battery is established ties utmost point ear heat and is transmitted to utmost point ear heat dissipation piece through heat conduction silicon film on.

The active cooling system 7 is used for cooling through a semiconductor cooling principle, meanwhile, the heat productivity of the semiconductor refrigerating sheet 34 is dissipated by pumping out through the cooling fan 37, the refrigerating surface of the semiconductor refrigerating sheet 34 is tightly attached to the aluminum alloy liquid pool 30, the liquid pool 30 is designed to be separated and limited in current, so that the refrigerating liquid stays for a certain time at the refrigerating end, and is pumped out to the cooling pipeline 32 through the variable speed circulating liquid pump 31, the cooling pipeline 32 penetrates through the tab radiating piece of the battery pack in a multi-linear mode, the large surface is contacted for heat dissipation, the cooling pipeline 32 penetrates through the space between the side frame of the metal shell and the aluminum radiating sheet at the same time, and the battery pack and the metal shell are cooled and dissipated.

BMS power management system 9 can control the heat dissipation by monitoring the state of the battery, when the BMS monitoring temperature reaches threshold 1 (temperature 25 ℃), start semiconductor refrigeration piece 34 and refrigerate, when the monitoring temperature reaches threshold 2 (temperature 35 ℃), start variable speed circulating liquid pump 31, speed 2 shelves, when the temperature rises, when the monitoring temperature reaches threshold 3 (temperature 45 ℃), variable speed circulating liquid pump transfers to speed 4 shelves, when the temperature rises, when the monitoring temperature reaches threshold 4 (temperature 55 ℃), circulating liquid pump transfers to speed 5 shelves, when the monitoring temperature reaches threshold 5 (temperature 65 ℃), the high temperature reports to the police, when the monitoring temperature reaches threshold 6 (temperature 75 ℃), stop the heavy current to be transported, and return to the navigation and shut down to charge, during charging, the BMS controls the charger to supply power for the active cooling system first, continue 5 shelves of refrigeration and cooling, when the electric core temperature reaches the safe charging environment, BMS power management system controls to stop the refrigeration of active cooling system 7.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. The utility model provides a take initiative cooling system intelligence lithium ion battery, includes the shell, its characterized in that: the battery pack and the active cooling system are installed in the shell, and a cooling pipeline of the active cooling system is tightly attached to a cooling assembly outside the battery pack.

2. The intelligent lithium ion battery with the active cooling system according to claim 1, wherein: the shell comprises a bottom shell, a front panel, a back panel, side frames and a face shell, wherein a BMS battery management system is arranged on the face shell, and a key power supply warning lamp is arranged on the face shell.

3. The intelligent lithium ion battery with the active cooling system according to claim 2, wherein: the face shell is provided with a handle.

4. The intelligent lithium ion battery with the active cooling system according to claim 1, wherein: the group battery includes group battery, keysets and utmost point ear radiating piece, every electric core of group battery all the cladding has the heat dissipation aluminum sheet, the discharge tab welding of group battery is on the keysets to detain transparent plastic insulating part, correspond keysets welding utmost point ear position trompil on the transparent plastic insulating part, trompil department assembles heat conduction silica gel piece respectively, utmost point ear radiating piece compresses tightly on heat conduction silica gel piece.

5. The intelligent lithium ion battery with the active cooling system according to claim 1, wherein: the active heat dissipation system comprises a liquid pool, a circulating heat dissipation pipeline and a semiconductor refrigerating sheet, wherein the liquid pool is provided with a sealing cover plate, a variable-speed circulating liquid pump is installed in the liquid pool, the liquid pool is provided with a liquid outlet and a liquid return port, and the circulating heat dissipation pipeline is connected between the liquid outlet and the liquid return port; the circulating heat dissipation pipeline passes through the space between the heat dissipation aluminum sheet and the metal shell, is tightly attached to the outer surface of the heat dissipation aluminum sheet and the inner surface of the metal shell, and passes through and is tightly attached to the upper end surface of the lug heat dissipation piece; the refrigerating surface of the semiconductor refrigerating piece is tightly attached to the side wall of the liquid pool, the other surface of the semiconductor refrigerating piece is provided with a radiating fin, a heat-conducting silica gel sheet is arranged between the radiating fin and the semiconductor refrigerating piece, and a radiating fan is arranged on the radiating fin.

6. The intelligent lithium ion battery with the active cooling system of claim 5, wherein: and a partition plate for limiting the flow is arranged in the liquid pool, so that the insulating cooling liquid stays for a longer time at the refrigerating end.

7. The intelligent lithium ion battery with the active cooling system according to claim 5, wherein: the upper end face of the lug heat dissipation piece is provided with a heat dissipation pipeline embedded groove, and the circulating heat dissipation pipeline is embedded into the heat dissipation pipeline.

8. The intelligent lithium ion battery with the active cooling system according to claim 5, wherein: and a dust screen and a waterproof fireproof heat-insulating sheet are arranged on the outer side of the heat-radiating fan.

9. The intelligent lithium ion battery with the active cooling system of claim 5, wherein: and heat-conducting silica gel pads are attached to two sides of the radiating fin and are fixed through aluminum alloy pressing blocks.

10. The intelligent lithium ion battery with the active cooling system according to claim 5, wherein: the housing is made of a metal material, the heat dissipation pipe is made of an aluminum pipe, and the liquid bath is made of an aluminum material.