CN116845423A - An energy storage battery cooling system - Google Patents

Abstract

The invention relates to the technical field of battery cooling systems, and discloses an energy storage battery cooling system, which includes an outdoor unit and an indoor unit. A compressor is installed inside the outdoor unit. The air outlet end of the compressor is connected to a condenser through a copper pipe. The condenser is There is a fan installed on the side. Through the improved design of the energy storage battery cooling component, the energy storage battery cooling component not only has a cooling function, but also has a fire extinguishing function by cooling the energy storage rechargeable battery. When the surface temperature of the energy storage rechargeable battery is too high, When a fire occurs, the energy storage battery cooling assembly activates the fire extinguishing device to extinguish the fire. That is, the energy storage battery cooling assembly directly sprays flame-retardant refrigerant on the surface of the energy storage battery to extinguish the fire. One cooling air-conditioning outdoor unit of the present invention can be equipped with several energy storage battery cooling assemblies. , can provide cooling for up to several energy storage battery cooling components at the same time. Based on the above design, this energy storage battery cooling system enables energy storage rechargeable batteries to operate efficiently, safely and reliably, and is less likely to cause fire or explosion risks.

Description

An energy storage battery cooling system

Technical field

The present invention relates to the technical field of battery cooling systems, specifically an energy storage battery cooling system.

Background technique

When the energy storage battery or new energy vehicle battery is charging, the battery surface temperature is high, and the battery surface needs to be cooled. Generally, air-conditioning refrigeration water or air-conditioning refrigeration air is used to cool the battery. When the battery surface temperature is too high when charging, it will It may affect the use or even explode. Therefore, all components of the air conditioning system that cools the rechargeable battery need to have explosion-proof functions. To this end, an energy storage battery cooling system is proposed.

Contents of the invention

The purpose of the present invention is to provide an energy storage battery cooling system to solve the problems raised in the above background art.

In order to achieve the above object, the present invention provides the following technical solution: an energy storage battery cooling system, including an outdoor unit and an indoor unit. A compressor is installed inside the outdoor unit, and the air outlet end of the compressor is connected to a condenser through a copper pipe. , a fan is installed on one side of the condenser;

The indoor unit includes several energy storage battery cooling components and several first Y-shaped tees. The first air outlet end of the first Y-shaped tees is connected to a second Y-shaped tee through a copper pipe. The first Y-shaped tees The second air outlet end of the Y-shaped tee and the second air outlet end of the Y-shaped tee are respectively connected to the air inlet end of the energy storage battery cooling assembly through copper pipes. The air outlet end of the energy storage battery cooling assembly is connected to a third air outlet through copper pipes. Y-shaped tee and fourth Y-shaped tee. The air outlet end of the third Y-shaped tee and the air outlet end of the energy storage battery cooling assembly are connected to the air inlet end of the fourth Y-shaped tee through a copper pipe.

Preferably, the fourth Y-shaped three-way air outlet end is connected to the air inlet end of the compressor through a copper pipe, and the first Y-shaped three-way air inlet end is connected to the condenser air inlet end through a copper pipe.

Preferably, the energy storage battery cooling assembly includes an electronic expansion valve. The air outlet of the electronic expansion valve is connected to a three-way through a copper pipe. The air outlet of the three-way is connected to a heat exchange copper pipe and a normally closed solenoid valve through a copper pipe.

Preferably, the air outlet end of the above-mentioned normally closed solenoid valve is connected to a fire extinguishing pipe through a copper pipe. One side of the fire extinguishing pipe is connected to a battery body, and a temperature sensor is installed on the outside of the battery body.

Preferably, the air inlet end of the above-mentioned electronic expansion valve is connected to the air outlet end of the first Y-shaped tee and the second Y-shaped tee respectively through copper pipes, and the air outlet end of the heat exchange copper pipe is connected to the third Y-shaped tee through copper pipes. The tee is connected to the air inlet end of the fourth Y-shaped tee.

Preferably, the air outlet end of the condenser is connected to the air inlet end of the first Y-shaped tee through a copper pipe, and the air outlet end of the fourth Y-shaped tee is connected to the air inlet end of the compressor through a copper pipe.

Preferably, the material of the first Y-shaped tee, the second Y-shaped tee, the third Y-shaped tee and the fourth Y-shaped tee is copper.

Preferably, the heat exchange copper tube is made of red copper, and the heat exchange copper tube is integrated with the graphene thermal conductive module.

Preferably, the refrigerant inside the compressor is heptafluoropropane.

Preferably, one side of the fire extinguishing pipe is provided with a plurality of injection holes located on one side of the battery body, and the output signal of the temperature sensor is connected to the input end of the normally closed solenoid valve.

Compared with the existing technology, the present invention adopts the above technical solution and has the following technical effects:

The present invention improves the design of the energy storage battery cooling component. The energy storage battery cooling component that cools the energy storage rechargeable battery not only has a cooling function, but also has a fire extinguishing function. When the surface temperature of the energy storage rechargeable battery is too high and catches fire, The energy storage battery cooling assembly activates the fire extinguishing device to extinguish the fire, that is, the energy storage battery cooling assembly directly sprays flame-retardant refrigerant on the surface of the energy storage battery to extinguish the fire. One cooling air-conditioning outdoor unit of the present invention can be equipped with several energy storage battery cooling assemblies, up to At the same time, it provides cooling for each energy storage battery cooling component. Based on the above design, this energy storage battery cooling system enables the energy storage rechargeable battery to operate efficiently, safely and reliably, without the risk of fire or explosion.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of the principle of the present invention;

Figure 2 is a schematic diagram of the principle of the energy storage battery cooling assembly of the present invention.

Explanation of reference signs: 1. Compressor; 3. Condenser; 4. Fan; 5. Outdoor unit; 6. First Y-shaped tee; 7. Second Y-shaped tee; 8. Electronic expansion valve; 9. Tee; 10. Heat exchange copper tube; 11. Normally closed solenoid valve; 12. Fire extinguishing pipe; 13. Temperature sensor; 14. Battery body; 15. Third Y-shaped tee; 16. Fourth Y-shaped tee; 17. Energy storage battery cooling component; 18. Indoor unit.

Detailed ways

The technical solutions in 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. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

It should be noted that when an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or indirectly provided on the other element; when an element is referred to as "connected" "To" another component, it may be directly connected to the other component or indirectly connected to the other component.

It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "first", "second", "vertical", "horizontal", "top" ", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply what is meant. Devices or elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limiting.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise explicitly and specifically limited.

It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to coordinate with the content disclosed in the specification for the understanding and reading of people familiar with this technology, and are not used to limit the conditions for the implementation of this application. , it has no technical substantive significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the effectiveness and purpose of this application, should still fall within the scope of what is disclosed in this application. The technical content must be within the scope of coverage.

Example

Please refer to Figures 1-2. The present invention provides a technical solution: an energy storage battery cooling system, including an outdoor unit 5 and an indoor unit 18. A compressor 1 is installed inside the outdoor unit 5, and the air outlet of the compressor 1 passes through a copper pipe. There is a condenser 3 connected. The compressor 1 works to discharge the internal heptafluoropropane fire-extinguishing refrigerant. The high-temperature and high-pressure fire-extinguishing refrigerant condenses and releases heat in the condenser 3 through the copper tube. Under the blowing action of the fan 4, the condenser 3 is Forced convection heat exchange, a fan 4 is installed on one side of the condenser 3;

The indoor unit 18 includes several energy storage battery cooling assemblies 17 and several first Y-shaped tees 6. The maximum number of the several energy storage battery cooling assemblies 17 is sixty-four. The first Y-shaped tee 6 has a first air outlet. The end is connected to a second Y-shaped tee 7 through a copper pipe. The second air outlet end of the first Y-shaped tee 6 and the air outlet end of the second Y-shaped tee 7 are respectively connected to the air inlet end of the energy storage battery cooling assembly 17 through copper pipes. All connecting copper pipes and refrigeration accessories are connected by brazing, all connecting copper pipes and stop valves are connected through threads, and the outlet end of the energy storage battery cooling component 17 is connected to the third Y-shaped tee 15 and the fourth Y through copper pipes. Type tee 16, the air outlet end of the third Y-shaped tee 15 and the air outlet end of the energy storage battery cooling assembly 17 are connected to the air inlet end of the fourth Y-shaped tee 16 through copper pipes.

The air outlet end of the fourth Y-shaped tee 16 is connected to the air inlet end of the compressor 1 through a copper pipe, the air inlet end of the first Y-shaped tee 6 is connected to the air inlet end of the condenser 3 through a copper pipe, and the energy storage battery cooling assembly 17 includes an electronic expansion valve 8. The outlet end of the electronic expansion valve 8 is connected to a tee 9 through a copper pipe. The outlet end of the tee 9 is connected to a heat exchange copper pipe 10 and a normally closed solenoid valve 11 through copper pipes. The electronic expansion valve 8 plays a role. The throttling, pressure and temperature reduction effect reduces the temperature and pressure of the refrigerant in the cooling system, which facilitates the evaporation and heat absorption of refrigeration in the heat exchange copper tube 10 .

The air outlet end of the normally closed solenoid valve 11 is connected to a fire extinguishing pipe 12 through a copper pipe. One side of the fire extinguishing pipe 12 is connected to a battery body 14. A temperature sensor 13 is installed outside the battery body 14. The air inlet end of the electronic expansion valve 8 is connected to the third air outlet through a copper pipe. The air outlet ends of the first Y-shaped tee 6 and the second Y-shaped tee 7 are connected, and the air outlet end of the heat exchange copper tube 10 is connected to the air inlet ends of the third Y-shaped tee 15 and the fourth Y-shaped tee 16 respectively through the copper tubes. The air outlet end of condenser 3 is connected to the air inlet end of the first Y-shaped tee 6 through a copper pipe, and the air outlet end of the fourth Y-shaped tee 16 is connected to the air inlet end of compressor 1 through a copper pipe. The temperature in the battery cabinet The sensor 13 detects an abnormal temperature and feeds it back to the air conditioner electronic control board. The air conditioner electronic control board is equivalent to the brain of the air conditioner, instructing the air conditioner to perform various actions. The air conditioner electronic control board sends instructions to the energy storage battery cooling component 17, causing the normally closed solenoid valve 11 to open. , at this time, the heptafluoropropane fire-extinguishing refrigerant in the air-conditioning and refrigeration system in the energy storage battery cooling assembly 17 directly sprays the fire-extinguishing refrigerant toward the surface of the battery body 14 along the several injection holes of the fire-extinguishing pipe 12. The black arrows in Figures 1 and 2 are The direction of refrigerant flow.

The first Y-shaped tee 6, the second Y-shaped tee 7, tee 9, the third Y-shaped tee 15 and the fourth Y-shaped tee 16 are made of copper. The first Y-shaped tee 6 and the second Y-shaped tee 6 are made of copper. The three ports of the Y-shaped tee 7 and tee 9, the third Y-shaped tee 15 and the fourth Y-shaped tee 16 are interconnected. The material of the heat exchange copper tube 10 is red copper. The heat exchange copper tube 10 is integrated with the graphene heat conduction module. Become one, the material of the copper tube is red copper, the refrigerant heptafluoropropane flows in it, evaporates and absorbs heat, reducing the temperature around the heat exchange copper tube 10. The function of the graphene heat conduction module is to transfer cold energy, so that the cold energy in the heat exchange copper tube 10 It is quickly transferred to the surrounding air to cool down the battery body 14 .

The refrigerant inside the compressor 1 is heptafluoropropane. There are several injection holes on the side of the battery body 14 on one side of the fire extinguishing pipe 12. The output signal of the temperature sensor 13 is connected to the input end of the normally closed solenoid valve 11. The surface of the battery body 14 generates In case of fire, the normally closed solenoid valve 11 is opened. At this time, refrigeration is ejected from the injection hole in the fire extinguishing pipe 12 to extinguish the fire. When the cooling system is working normally, the normally closed solenoid valve 11 does not open and is in a closed state. When the temperature sensor 13 senses the battery body 14 After the temperature is abnormal, feedback is given to the air conditioning electronic control board of the energy storage cooling system. The electronic control board is equivalent to the brain of the air conditioner, commanding the air conditioner to perform various actions. The electronic control board sends instructions to the normally closed solenoid valve 11 to open, and heptafluoropropane fire extinguishing refrigerant Follow the several injection holes of the fire extinguishing pipe 12 to directly spray the surface of the battery body 14 to extinguish the fire.

Working principle: When the energy storage battery or the new energy vehicle battery is charging, the battery surface temperature is high and the battery surface needs to be cooled. First, the compressor 1 works to discharge the internal heptafluoropropane fire-extinguishing refrigerant, and the high-temperature and high-pressure fire-extinguishing refrigerant is used. The agent condenses and releases heat in the condenser 3 through the copper tube. Under the blowing action of the fan 4, forced convection heat exchange is performed on the condenser 3. The condensed medium-temperature and high-pressure fire-extinguishing refrigerant liquid passes through one of the first Y-shaped tees. After 6, it is divided into 2 channels. One of the refrigerants is divided into 2 channels after passing through the second Y-shaped tee 7. One of the refrigerants enters the energy storage battery cooling assembly 17. The refrigerant is throttled by the electronic expansion valve 8 and then passes through the tee 9. One of the ports enters the heat exchange copper tube 10 and evaporates and absorbs heat, thereby reducing the temperature of the battery body 14 in the energy storage battery cooling assembly 17 and maintaining a constant temperature of the energy storage battery cooling assembly 17. The heat exchange copper tube 10 absorbs heat and evaporates. The final refrigerant passes through the third Y-shaped tee 15 and the fourth Y-shaped tee 16 in turn and then returns to the outdoor unit 5 through several connecting pipes. The refrigerant is sucked into the compressor 1 and compressed, completing the energy storage battery cooling assembly 17 A refrigeration cycle. That is, cooling the battery body 14 or the new energy vehicle battery in one of the energy storage battery cooling components 17 is achieved;

The refrigerant is divided into two paths after passing through the second Y-shaped tee 7. The other path of refrigerant enters the other energy storage battery cooling component 17. The refrigerant is throttled by the electronic expansion valve 8 and then enters through one of the ports in the tee 9. The evaporation and heat absorption in the heat exchange copper tube 10 reduces the temperature of the battery body 14 in the other energy storage battery cooling assembly 17 and maintains the heating temperature of the energy storage battery cooling assembly 17 constant. After the heat exchange copper tube 10 absorbs heat and evaporates, the cooling The agent passes through the third Y-shaped tee 15 and the fourth Y-shaped tee 16 in turn and then returns to the compressor 1 of the outdoor unit 5 through several connecting pipes. It is sucked and compressed by the compressor 1 to complete an energy storage battery cooling assembly 17. Refrigeration cycle. That is, it is possible to cool down the second energy storage battery cooling assembly 17 pairs of batteries or new energy vehicle batteries;

The refrigerant is divided into two paths after passing through the first Y-shaped tee 6. The other path of refrigerant enters the energy storage battery cooling assembly 17. The refrigerant is throttled by the electronic expansion valve 8 and then enters the exchanger through the other port of the tee 9. The evaporation and heat absorption in the hot copper tube 10 reduces the temperature of the battery body 14 in the energy storage battery cooling assembly 17 and maintains a constant temperature of the energy storage battery cooling assembly 17. The refrigerant after absorbing heat and evaporating in the heat exchange copper tube 10 passes through the fourth The Y-shaped tee 16 then returns to the compressor 1 of the outdoor unit 5 through a number of connecting pipes, and is sucked and compressed by the compressor 1 to complete a refrigeration cycle of multiple sets of energy storage battery cooling components 17, that is, to realize the supply of energy to multiple energy storage battery cooling assemblies 17. It can cool down the battery in the battery cooling assembly 17 or the new energy vehicle battery.

When the energy storage battery or new energy vehicle battery is charging and the battery body 14 catches fire due to abnormal operation, the energy storage battery cooling assembly 17 activates the fire extinguishing device to extinguish the fire, that is, the air conditioner evaporator directly sprays flame-retardant refrigerant on the surface of the battery body 14 Fire extinguishing, this energy storage battery cooling component 17 air conditioner evaporator refrigeration system uses heptafluoropropane fire extinguishing refrigerant with flame retardant and explosion-proof function. The energy storage rechargeable battery is generally placed in the battery cabinet. This energy storage battery cooling component 17 is mainly installed on the energy storage rechargeable battery. The top can also be installed around it, that is, the energy storage battery cooling assembly 17 is installed in the battery cabinet. When the battery body 14 and the battery cabinet are in direct contact, and when the battery body 14 catches fire, the temperature sensor 13 in the battery cabinet detects the temperature abnormality and feeds it back to The air conditioner electronic control board is equivalent to the brain of the air conditioner, which instructs the air conditioner to perform various actions. The air conditioner electronic control board sends instructions to the energy storage battery cooling assembly 17, causing the normally closed solenoid valve 11 to open. At this time, the air conditioner in the energy storage battery cooling assembly 17 The heptafluoropropane fire-extinguishing refrigerant in the refrigeration system is sprayed directly toward the surface of the battery body 14 along several injection holes of the fire-extinguishing pipe 12 to extinguish the fire. The ejected refrigerant evaporates or coexists with gas and liquid in the air instantly, and the temperature is lower than 0°C, so it can extinguish fires. In addition, the refrigerant ejected from the injection hole has a high pressure, a long range, and a good fire extinguishing effect. Multiple battery bodies 14 can be cooled separately, and multiple burning battery bodies 14 can be extinguished at the same time.

In summary, based on the refrigeration principle and refrigerant characteristics, we can overcome the shortcomings of the existing energy storage cooling system air conditioner evaporator refrigeration that cannot extinguish fires with the same configuration, improve the operating economy of the energy storage cooling system, and achieve accurate temperature control of an energy storage cooling system air conditioner. Quickly cool down the battery body 14, and the system operates stably and reliably. Through one-to-many multi-connection radiant refrigeration, the battery body 14 in several groups of energy storage battery cooling assemblies 17 can be cooled down. The evaporator is designed to extinguish the fire. By providing energy storage The evaporator used for cooling the rechargeable battery not only has a cooling function, but also has a fire extinguishing function. When the surface temperature of the energy storage rechargeable battery body 14 is too high and catches fire, the energy storage battery cooling component 17 of the energy storage battery cooling system starts the fire extinguishing device to extinguish the fire, that is, The air conditioner evaporator directly sprays flame-retardant refrigerant on the surface of the energy storage battery to extinguish the fire.

So far, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. It should be noted that implementation methods not shown or described in the drawings or the text of the specification are all forms known to those of ordinary skill in the technical field and have not been described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and those of ordinary skill in the art can simply change or replace them.

Those skilled in the art will understand that the features described in the various embodiments and/or claims of the present invention can be combined or/or combined in various ways, even if such combinations or combinations are not explicitly described in the present invention. In particular, various combinations and/or combinations of features recited in the various embodiments and/or claims of the invention may be made without departing from the spirit and teachings of the invention. All such combinations and/or combinations fall within the scope of the invention.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Within the spirit and principles of the present invention, any modifications, equivalent substitutions, improvements, etc. shall be included in the protection scope of the present invention.

Claims (10)

1. An energy storage battery cooling system, characterized in that: the outdoor unit (5) and the indoor unit (18) are included, a compressor (1) is installed on the inner side of the outdoor unit (5), a condenser (3) is communicated with the air outlet end of the compressor (1) through a copper pipe, and a fan (4) is installed on one side of the condenser (3);

the indoor unit (18) comprises a plurality of energy storage battery cooling assemblies (17) and a plurality of first Y-shaped tee joints (6), wherein a first air outlet end of each first Y-shaped tee joint (6) is communicated with a second Y-shaped tee joint (7) through a copper pipe, an air outlet end of each first Y-shaped tee joint (6) and an air outlet end of each second Y-shaped tee joint (7) are respectively communicated with an air inlet end of each energy storage battery cooling assembly (17) through copper pipes, an air outlet end of each energy storage battery cooling assembly (17) is respectively communicated with a third Y-shaped tee joint (15) and a fourth Y-shaped tee joint (16) through copper pipes, and an air outlet end of each third Y-shaped tee joint (15) and an air outlet end of each energy storage battery cooling assembly (17) are respectively communicated with an air inlet end of each fourth Y-shaped tee joint (16) through copper pipes.

2. The energy storage battery cooling system of claim 1, wherein: the air outlet end of the fourth Y-shaped tee joint (16) is communicated with the air inlet end of the compressor (1) through a copper pipe, and the air inlet end of the first Y-shaped tee joint (6) is communicated with the air inlet end of the condenser (3) through a copper pipe.

3. The energy storage battery cooling system of claim 1, wherein: the energy storage battery cooling assembly (17) comprises an electronic expansion valve (8), wherein an air outlet end of the electronic expansion valve (8) is communicated with a tee joint (9) through a copper pipe, and an air outlet end of the tee joint (9) is respectively communicated with a heat exchange copper pipe (10) and a normally closed electromagnetic valve (11) through the copper pipe.

4. A cooling system for an energy storage battery according to claim 3, wherein: the fire extinguishing device is characterized in that the gas outlet end of the normally closed electromagnetic valve (11) is communicated with a fire extinguishing pipe (12) through a copper pipe, one side of the fire extinguishing pipe (12) is connected with a battery main body (14), and a temperature sensor (13) is arranged on the outer side of the battery main body (14).

5. The energy storage battery cooling system of claim 4, wherein: the air inlet end of the electronic expansion valve (8) is respectively communicated with the air outlet ends of the first Y-shaped tee joint (6) and the second Y-shaped tee joint (7) through copper pipes, and the air outlet end of the heat exchange copper pipe (10) is respectively communicated with the air inlet ends of the third Y-shaped tee joint (15) and the fourth Y-shaped tee joint (16) through copper pipes.

6. The energy storage battery cooling system of claim 5, wherein: the air outlet end of the condenser (3) is communicated with the air inlet end of the first Y-shaped tee joint (6) through a copper pipe, and the air outlet end of the fourth Y-shaped tee joint (16) is communicated with the air inlet end of the compressor (1) through a copper pipe.

7. The energy storage battery cooling system of claim 1, wherein: the first Y-shaped tee joint (6), the second Y-shaped tee joint (7), the tee joint (9), the third Y-shaped tee joint (15) and the fourth Y-shaped tee joint (16) are made of red copper.

8. The energy storage battery cooling system of claim 5, wherein: the heat exchange copper pipe (10) is made of red copper, and the heat exchange copper pipe (10) and the graphene heat conduction module are integrated into a whole.

9. The energy storage battery cooling system of claim 1, wherein: the refrigerant inside the compressor (1) is heptafluoropropane.

10. The energy storage battery cooling system of claim 4, wherein: and one side of the fire extinguishing pipe (12) is provided with a plurality of spray holes positioned at one side of the battery main body (14), and the output end of the temperature sensor (13) is connected with the input end of the normally closed electromagnetic valve (11) in a signal manner.