CN118367262A - Novel water cooling unit system for energy storage equipment - Google Patents
Novel water cooling unit system for energy storage equipment Download PDFInfo
- Publication number
- CN118367262A CN118367262A CN202410481863.9A CN202410481863A CN118367262A CN 118367262 A CN118367262 A CN 118367262A CN 202410481863 A CN202410481863 A CN 202410481863A CN 118367262 A CN118367262 A CN 118367262A
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- port
- energy storage
- battery
- cooling
- storage converter
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 74
- 238000004146 energy storage Methods 0.000 title claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000005057 refrigeration Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims description 12
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000000110 cooling liquid Substances 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a novel water cooling unit system for energy storage equipment, which relates to the technical field of cooling systems, wherein an energy storage converter is connected with an air cooling radiator in series through a pipeline to form an air cooling circulation system, a battery core and a battery cooler form heat exchange circulation, a refrigeration system and the battery cooler form refrigeration circulation, the refrigeration circulation and the heat exchange circulation are connected in parallel to form a battery core refrigeration circulation system, the air cooling circulation system is connected in parallel with the heat exchange circulation through a four-way water valve, the air cooling system is connected in parallel with a straight-through pipe through the pipeline, and one end of the straight-through pipe is connected through a three-way water valve. The invention can reasonably plan the cooling strategy of the battery core and the energy storage converter by combining the conventional battery liquid cooling scheme, thereby reducing the energy consumption of the whole battery during cooling. Meanwhile, the cooling scheme of the battery and the energy storage converter can be reasonably adjusted according to the ambient temperature, and the probability of damage of key components of the cooling part of the battery is reduced.
Description
Technical Field
The invention relates to the technical field of cooling systems, in particular to a novel water cooling unit system for energy storage equipment.
Background
For electrochemical energy storage, lithium batteries are currently used as energy storage main bodies in most cases, so that temperature control around a lithium battery system is of additional importance; the temperature control is accurate, the service life of the lithium battery can be prolonged, the number of charge and discharge cycles is increased, the operation power consumption of the system is reduced, the operation cost is reduced, and the economic optimization is realized.
Components conventionally required to be cooled in an energy storage system of a lithium battery include: the battery cell and PCS (energy storage converter), in the scheme of the current system, the common battery cell is cooled by adopting liquid cooling and PCS adopting an air cooling mode; when PCS is in air cooling, the risk of insufficient cooling capacity exists when the ambient temperature is high, and PCS frequency-reducing operation can be caused; the electric core liquid cooling scheme generally adopts a compressor for forced cooling; at lower ambient temperatures, there is still a need to turn on the compressor, which results in high energy consumption for system operation at full life cycle and long-term operation results in reduced compressor durability.
Disclosure of Invention
The invention aims to solve the technical problem of solving the problem that a cooling system cannot reasonably cope with cooling of energy storage equipment by providing a novel water cooling unit system for the energy storage equipment.
Based on the technical problems existing in the background technology, the invention provides a novel water cooling unit system for energy storage equipment, which comprises an energy storage converter, an air cooling radiator, an electric core, a battery cooler and a refrigerating system, wherein the energy storage converter is connected with the air cooling radiator in series through a pipeline to form an air cooling circulation system, the electric core and the battery cooler form a heat exchange circulation, the refrigerating system and the battery cooler form a refrigerating circulation, the refrigerating circulation and the heat exchange circulation are connected in parallel to form the electric core refrigerating circulation system, the air cooling circulation system and the heat exchange circulation are connected in parallel through a four-way water valve, the air cooling system is connected in parallel through a pipeline to form a straight-through pipe, and one end of the straight-through pipe is connected through a three-way water valve.
Preferably, the air cooling circulation system comprises an energy storage converter loop water pump, an air cooling radiator and an energy storage converter, and the energy storage converter loop water pump, the air cooling radiator and the energy storage converter are communicated through pipelines in sequence.
Preferably, the heat exchange cycle comprises a battery loop water pump, an electric heater, a first sensor group, a battery core and a second sensor group, wherein the battery loop water pump, the electric heater, a battery cooler, the first sensor group, the battery core and the second sensor group are sequentially connected.
Preferably, the refrigeration cycle comprises an electric compressor, an exhaust temperature and pressure sensor, an air-cooled condenser, a liquid storage tank, an electronic expansion valve, a battery cooler and an air suction temperature and pressure sensor, wherein the electric compressor, the exhaust temperature and pressure sensor, the air-cooled condenser, the liquid storage tank, the electronic expansion valve, the battery cooler and the air suction temperature and pressure sensor are sequentially connected.
Preferably, the four-way water valve comprises an A port, a B port, a C port and a D port, the water inlet of the energy storage converter loop water pump is connected with the A port, the liquid outlet of the energy storage converter is connected with the B port, the water inlet of the battery loop water pump is connected with the C port, and the second sensor group is connected with the D port.
Preferably, the three-way water valve comprises an a port, a b port and a c port, wherein the a port is connected with the water inlet of the energy storage converter, the b port is connected with the water outlet of the air cooling radiator, and the c port is connected with one end of the straight-through pipe.
Preferably, when the temperature is at a low temperature, the port A is communicated with the port D, the port B is communicated with the port C, and the port a is communicated with the port B.
Preferably, when the temperature is at the medium temperature, the port A is communicated with the port B, the port C is communicated with the port D, and the port a is communicated with the port B.
Preferably, when the temperature is at a high temperature, the port A is communicated with the port D, the port B is communicated with the port C, and the port a is communicated with the port C.
Compared with the prior art, the novel water cooling unit system for the energy storage equipment provided by the invention has the following technical effects that:
The invention can reasonably plan the cooling strategy of the battery core and the energy storage converter by combining the conventional battery liquid cooling scheme, thereby reducing the energy consumption of the whole battery during cooling. Meanwhile, the cooling scheme of the battery and the energy storage converter can be reasonably adjusted according to the ambient temperature, and the probability of damage of key components of the cooling part of the battery is reduced.
According to the invention, under the working condition of a low-temperature environment, the battery cells are connected in series into the cooling loop of the energy storage converter for air cooling, so that the use of a compression pump is reduced, and the energy consumption is reduced.
According to the invention, under the working condition of a high-temperature environment, the energy storage converter is connected in series into the battery core cooling loop to carry out liquid cooling, so that the operation safety of the energy storage converter is ensured.
Drawings
FIG. 1 is a system connection diagram of the present invention;
FIG. 2 is a diagram of a cryogenic system connection of the present invention;
FIG. 3 is a schematic diagram of a medium temperature system connection of the present invention;
FIG. 4 is a high temperature system connection diagram of the present invention;
FIG. 5 is a diagram showing the connection of an air cooling circulation system according to the present invention;
fig. 6 is a connection diagram of the battery cell refrigeration cycle system of the present invention.
In the figure: 1. an energy storage converter; 111. an air-cooled radiator; 2. a battery cell; 316. a battery cooler; 11. an air-cooling circulation system; 21. heat exchange circulation; 31. a refrigeration cycle; 10. a cell refrigeration cycle system; 115. a four-way water valve; 113. a straight pipe; 112. three-way water valve; 110. an energy storage converter loop water pump; 210. a battery loop water pump; 211. an electric heater; 212. a first sensor group; 216. a second sensor group; 310. an electric compressor; 311. an exhaust temperature and pressure sensor; 312. an air-cooled condenser; 314. a liquid storage tank; 315. an electronic expansion valve; 318. an air suction temperature and pressure sensor.
Detailed Description
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Examples
Referring to fig. 1-6, the present invention provides a novel water cooling unit system for energy storage devices, which includes an energy storage converter 1, an air-cooled radiator 111, a battery core 2, a battery cooler 316 and a refrigerating system, wherein the energy storage converter 1 is connected in series with the air-cooled radiator 111 through a pipeline to form an air-cooled circulation system 11, the battery core 2 and the battery cooler 316 form a heat exchange circulation 21, the refrigerating system and the battery cooler 316 form a refrigerating circulation 31, the refrigerating circulation 31 and the heat exchange circulation 21 are connected in parallel to form a refrigerating circulation 31 system of the battery core 2, the air-cooled circulation system 11 and the heat exchange circulation 21 are connected in parallel through a four-way water valve 115, the air-cooled system is connected in parallel with a through pipe 113 through a pipeline, and one end of the through pipe 113 is connected through a three-way water valve 112. According to the invention, two independent heat dissipation systems of the energy storage converter 1 and the battery cell 2 are integrated, the two heat dissipation systems are alternately used for heat dissipation through the ambient temperature, a natural cooling system is adopted at low temperature, the natural cooling system and the forced cooling system are mutually independent at medium temperature and are used in a mixed mode, and only forced cooling is adopted at high temperature for cooling, so that the cooling effect of the battery is reasonably planned.
In a specific embodiment, referring to fig. 1,5 and 6, the air-cooled circulation system 11 includes an energy storage converter loop water pump 110, an air-cooled radiator 111 and an energy storage converter 1, and the energy storage converter loop water pump 110, the air-cooled radiator 111 and the energy storage converter 1 are sequentially communicated through pipes. The conventional heat dissipation mode of the energy storage converter 1 in the invention is to perform air-cooled heat dissipation, a cooling liquid is arranged in a pipeline, the cooling liquid flows in the air-cooled circulation system 11 through a water pump, the cooling liquid absorbs the temperature of the energy storage converter 1, and the temperature is transported to the air-cooled heat dissipation device 111 through the energy storage converter loop water pump 110 to perform air-cooled heat dissipation, and the temperature is reduced after the cooling liquid flows back to the energy storage converter 1.
In a specific embodiment, referring to fig. 1, 5 and 6, the heat exchange cycle 21 includes a battery loop water pump 110, an electric heater 211, a first sensor group 212, a battery core 2 and a second sensor group 216, where the battery loop water pump 110, the electric heater 211, the battery cooler 316, the first sensor group 212, the battery core 2 and the second sensor group 216 are sequentially connected. In the invention, the heat exchange cycle 21 takes the heat of the battery cell 2 to the battery cooler 316 through the cooling liquid in the pipeline for heat exchange, the battery cooler 316 is connected with the battery cell 2 in a cycle, the battery cooler 316 is also connected with the refrigeration cycle 31 in a cycle, and the cooling heat exchange of the battery cell 2 exchanges heat at the battery cooler 316.
In a specific embodiment, referring to fig. 1, 5 and 6, the refrigeration cycle 31 includes an electric compressor 310, an exhaust temperature and pressure sensor 311, an air-cooled condenser 312, a liquid storage tank 314, an electronic expansion valve 315 and battery coolers 316 and 318, wherein the electric compressor 310, the exhaust temperature and pressure sensor 311, the air-cooled condenser 312, the liquid storage tank 314, the electronic expansion valve 315, the battery cooler 316 and the intake temperature and pressure sensor 318 are sequentially connected. The refrigeration cycle 31 in the present invention cools the refrigerant in the refrigeration cycle 31 through the air-cooled condenser 312, and the cooled refrigerant exchanges heat with the coolant in the heat exchange cycle 21 at the battery cooler 316.
In a specific embodiment, referring to fig. 1, 5 and 6, the four-way water valve 115 includes an a port, a B port, a C port and a D port, the water inlet of the energy storage converter loop water pump 110 is connected to the a port, the liquid outlet of the energy storage converter 1 is connected to the B port, the water inlet of the battery loop water pump 110 is connected to the C port, and the second sensor group 216 is connected to the D port. The four-way valve and the three-way valve are matched, so that the cooling circulation of the energy storage converter 1 and the cooling circulation of the battery core 2 can be communicated or independent, and the energy-saving and temperature-reducing device can be used for efficiently reducing the temperature in different temperature environments.
In a specific embodiment, referring to fig. 1, 5 and 6, the three-way water valve 112 includes an a port, a b port and a c port, the a port is connected with the water inlet of the energy storage converter 1, the b port is connected with the water outlet of the air-cooled radiator 111, and the c port is connected with one end of the through pipe 113. The three-way valve and the four-way valve are matched, so that the cooling circulation of the energy storage converter 1 and the cooling circulation of the battery core 2 can be communicated or independent, the energy-saving cooling can be performed in different temperature environments, and the direct-through pipe 113 is conducted when air cooling is not needed.
In a specific embodiment, referring to fig. 2, when the temperature is low, the port a is connected to the port D, the port B is connected to the port C, and the port a is connected to the port B, so that the battery cell 2 is connected in series with the energy storage converter 1 and the air-cooled radiator 111, and the heat dissipation of the battery cell 2 and the energy storage converter 1 is performed by the air-cooled radiator 111, and at this time, the refrigeration cycle 31 is turned off and no heat exchange is performed.
In a specific embodiment, referring to fig. 3, when the temperature is at the medium temperature, the port a is conducted with the port B, the port C is conducted with the port D, and the port a is conducted with the port B, and at this time, the air-cooled radiator 111 and the energy storage converter 1 form a cycle, so that the energy storage converter 1 radiates heat through air-cooled heat radiation, and the refrigeration cycle 31 is started and cooperates with the heat exchange cycle 21 to radiate heat from the battery cell 2.
In a specific embodiment, referring to fig. 4, when the temperature is at a high temperature, the port a is conducted with the port D, the port B is conducted with the port C, the port a is conducted with the port C, at this time, the air-cooled radiator 111 is shut off by the direct-current pipe, the air-cooled radiator 111 does not work, the battery core 2 and the energy storage converter 1 form a cycle, and the battery core and the energy storage converter 1 are cooled through the refrigeration cycle 31, so that the safety of the energy storage converter 1 is ensured.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a novel water cooling unit system for energy storage equipment, including energy storage converter (1), forced air cooling radiator (111), electric core (2), battery cooler (316) and refrigerating system, energy storage converter (1) are established ties through pipeline and forced air cooling radiator (111) and are formed forced air cooling circulation system (11), electric core (2) and battery cooler (316) form heat exchange cycle (21), refrigerating system and battery cooler (316) form refrigeration cycle (31), refrigeration cycle (31) are parallelly connected with heat exchange cycle (21) and are formed electric core refrigeration cycle system (10), a serial communication port, connect in parallel through cross water valve (115) between forced air cooling circulation system (11) and heat exchange cycle (21), forced air cooling system has straight through pipe (113) through the pipeline is parallelly connected, and the one end of straight pipe (113) is connected through tee bend water valve (112).
2. The novel water cooling unit system for energy storage equipment according to claim 1, wherein the air cooling circulation system (11) comprises an energy storage converter loop water pump (110), an air cooling radiator (111) and an energy storage converter (1), and the energy storage converter loop water pump (110), the air cooling radiator (111) and the energy storage converter (1) are sequentially communicated through pipelines.
3. The novel water cooling unit system for the energy storage device according to claim 1, wherein the heat exchange cycle (21) comprises a battery loop water pump (210), an electric heater (211), a first sensor group (212), a battery core (2) and a second sensor group (216), and the battery loop water pump (210), the electric heater (211), a battery cooler (316), the first sensor group (212), the battery core (2) and the second sensor group (216) are sequentially connected.
4. The novel water chiller system for an energy storage device of claim 1, wherein the refrigeration cycle (31) comprises an electric compressor (310), an exhaust temperature and pressure sensor (311), an air-cooled condenser (312), a liquid storage tank (314), an electronic expansion valve (315), a battery cooler (316), and an air suction temperature and pressure sensor (318), wherein the electric compressor (310), the exhaust temperature and pressure sensor (311), the air-cooled condenser (312), the liquid storage tank (314), the electronic expansion valve (315), the battery cooler (316), and the air suction temperature and pressure sensor (318) are sequentially connected.
5. The novel water cooling unit system for energy storage equipment according to claim 3, wherein the four-way water valve (115) comprises an A port, a B port, a C port and a D port, the water inlet of the energy storage converter loop water pump (110) is connected with the A port, the liquid outlet of the energy storage converter (1) is connected with the B port, the water inlet of the battery loop water pump (210) is connected with the C port, and the second sensor group is connected with the D port.
6. The novel water cooling unit system for the energy storage device according to claim 5, wherein the three-way water valve (112) comprises an a port, a b port and a c port, the a port is connected with the water inlet of the energy storage converter (1), the b port is connected with the water outlet of the air cooling radiator (111), and the c port is connected with one end of the through pipe (113).
7. The water chiller system for a novel energy storage device of claim 6 wherein when the temperature is low, port a is in communication with port D, port B is in communication with port C, and port a is in communication with port B.
8. The water chiller system for a novel energy storage device of claim 6 wherein when the temperature is at a medium temperature, port a is in communication with port B, port C is in communication with port D, and port a is in communication with port B.
9. The water chiller system for a novel energy storage device of claim 6 wherein when the temperature is high, port a is in communication with port D, port B is in communication with port C, and port a is in communication with port C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410481863.9A CN118367262A (en) | 2024-04-22 | 2024-04-22 | Novel water cooling unit system for energy storage equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410481863.9A CN118367262A (en) | 2024-04-22 | 2024-04-22 | Novel water cooling unit system for energy storage equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118367262A true CN118367262A (en) | 2024-07-19 |
Family
ID=91877969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410481863.9A Pending CN118367262A (en) | 2024-04-22 | 2024-04-22 | Novel water cooling unit system for energy storage equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118367262A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118867491A (en) * | 2024-09-29 | 2024-10-29 | 常州博瑞电力自动化设备有限公司 | A dual-circulation loop energy storage chiller and thermal management control method |
| WO2026045836A1 (en) * | 2024-08-30 | 2026-03-05 | 宁德时代新能源科技股份有限公司 | Energy storage system and control method therefor |
-
2024
- 2024-04-22 CN CN202410481863.9A patent/CN118367262A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026045836A1 (en) * | 2024-08-30 | 2026-03-05 | 宁德时代新能源科技股份有限公司 | Energy storage system and control method therefor |
| CN118867491A (en) * | 2024-09-29 | 2024-10-29 | 常州博瑞电力自动化设备有限公司 | A dual-circulation loop energy storage chiller and thermal management control method |
| CN118867491B (en) * | 2024-09-29 | 2024-12-24 | 常州博瑞电力自动化设备有限公司 | A dual-circulation loop energy storage chiller and thermal management control method |
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