CN219677349U - Battery thermal management system with cold and hot control and fluorine pump circulation functions - Google Patents
Battery thermal management system with cold and hot control and fluorine pump circulation functions Download PDFInfo
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- CN219677349U CN219677349U CN202320360559.XU CN202320360559U CN219677349U CN 219677349 U CN219677349 U CN 219677349U CN 202320360559 U CN202320360559 U CN 202320360559U CN 219677349 U CN219677349 U CN 219677349U
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- condenser
- management system
- thermal management
- evaporator
- battery
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 23
- 239000011737 fluorine Substances 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 4
- 230000001629 suppression Effects 0.000 claims 3
- 238000001816 cooling Methods 0.000 abstract description 15
- 238000005057 refrigeration Methods 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000003507 refrigerant Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 3
- 206010000369 Accident Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Other Air-Conditioning Systems (AREA)
Abstract
The utility model discloses a battery thermal management system with a cold and hot control and fluorine pump circulation function, which comprises a compressor, a condenser, a liquid storage tank, an evaporator and a gas-liquid separator, wherein the compressor, the condenser, the liquid storage tank, the evaporator and the gas-liquid separator are connected end to end through main pipelines; a throttle mechanism and a circulating pump assembly which are connected in parallel are arranged between the condenser and the evaporator; a four-way valve is arranged between the compressor and the condenser; the pipeline that is connected between cross valve and the gas-liquid separator sets up to first branch pipeline, is connected through the second branch pipeline between the exit end of gas-liquid separator and the entrance point of condenser, is provided with the check valve on first branch pipeline and the second branch pipeline respectively. The battery thermal management system realizes three operation modes, including a refrigeration mode, a heating mode and a natural cooling mode; the problem that the existing air conditioner cannot adopt an outdoor free cold source to save energy in transitional seasons is solved, the requirements of controllable temperature and energy saving of a system of the energy storage battery are met, and the service life of the energy storage battery is prolonged.
Description
Technical Field
The utility model relates to the technical field of battery thermal management, in particular to a battery thermal management system with a cold-hot control and fluorine pump circulation function.
Background
Along with the increasing serious global energy and environmental problems, the world is actively seeking a solution, a battery is used as a key device for energy storage development, and the thermal effect problem directly affects the cycle life or the safety of the whole energy storage system. Generally, the optimal working temperature of the energy storage power battery is between 15 ℃ and 35 ℃, and the temperature is higher than 40 ℃ or lower than 0 ℃ to cause rapid decay of the service life of the battery, and when the temperature imbalance among the battery cells in the battery system occurs, the chemical reaction and the charge-discharge reaction rate of the battery are also unbalanced, so that the cycle life and the capacity among the battery cells are different. The smaller the temperature difference inside the battery is, the better the overall consistency of the battery is, the longer the service life of the battery is, and the operation is safer, so that the continuous and stable operation of the energy storage battery is not separated from the cooperation of a battery thermal management system.
At present, a battery thermal management system based on direct evaporative cooling of a refrigerant is only applied to electric automobiles, and low-temperature refrigerants obtained by means of mechanical refrigeration circulation directly take away heat generated during battery operation through a battery liquid cooling plate, so that the battery is maintained in a proper target temperature range. However, if this is applied to the field of energy storage batteries, there are the following problems:
(1) When the environmental temperature is too low, the unit has the problem of compressor start-up delay due to the need of oil preheating; (2) When the environmental temperature is too low, the unit is easy to generate low-pressure alarm faults due to low pressure of the refrigerant; (3) When the seasons are excessive, the unit cannot use an outdoor natural cold source, so that the energy saving purpose is achieved; (4) For the use scenario of multiple battery terminals with different heating powers, the existing direct evaporative battery thermal management system is difficult to apply.
Disclosure of Invention
In view of the foregoing drawbacks or deficiencies in the prior art, it is desirable to provide a battery thermal management system with a thermally controlled fluorine-containing pump cycle.
The utility model provides a battery thermal management system with a cold and hot control and fluorine pump circulation, which comprises a compressor, a condenser, a liquid storage tank, an evaporator and a gas-liquid separator, wherein the compressor, the condenser, the liquid storage tank, the evaporator and the gas-liquid separator are connected end to end through main pipelines; a throttling mechanism and a circulating pump assembly are arranged between the condenser and the evaporator, and the circulating pump assembly is connected with the throttling mechanism in parallel; a four-way valve is arranged between the compressor and the condenser; a fire extinguishing assembly is arranged on a pipeline between the evaporator and the throttling mechanism and between the evaporator and the circulating pump assembly; the pipeline that is connected between the cross valve with gas-liquid separator sets up to first branch pipeline, gas-liquid separator's exit end with be connected through the second branch pipeline between the entrance point of condenser, be provided with the check valve on first branch pipeline and the second branch pipeline respectively.
Preferably, the throttle mechanism is an expansion valve.
Preferably, the circulating pump assembly comprises a circulating pump and an electromagnetic valve, and the circulating pump is a fluorine pump.
Preferably, the fire extinguishing assembly comprises a fire extinguishing branch pipe, the fire extinguishing branch pipe is arranged on a pipeline between the evaporator and the throttling mechanism, and a valve is arranged on the fire extinguishing branch pipe; and a spray head is arranged on a pipeline on one side of the outlet end of the valve, which corresponds to the battery, of the fire extinguishing branch pipeline.
Preferably, the device also comprises a control module and a temperature sensor for detecting the humidity difference between the inside and the outside of the battery energy storage cabinet; and the signal input end of the control module is connected with the signal output end of the temperature sensor and is used for controlling the work of the battery thermal management system according to the signal transmitted and recorded by the temperature sensor.
Preferably, the compressor, the four-way valve, the condenser, the electromagnetic valve, the fluorine pump, the expansion valve, the evaporator and the gas-liquid separator are all electrically connected with the control module.
Compared with the prior art, the utility model has the beneficial effects that:
the battery thermal management system with the cold and hot control and the fluorine pump circulation realizes three operation modes including a refrigeration mode, a heating mode and a natural cooling mode by combining an air conditioning system mechanism formed by the structures of a compressor, a four-way valve, a condenser, an evaporator, a throttling mechanism and the like with a circulating pump assembly; the problem that the existing air conditioner cannot adopt an outdoor free cold source to save energy in transitional seasons is solved, the requirements of controllable temperature and energy saving of a system of an energy storage battery are met, and the service life of the energy storage battery is prolonged;
the variable-frequency compressor is adopted for compressor refrigeration, and the compressor works at low frequency, medium frequency or high frequency according to the cold energy demand, so that the start and stop times of the compressor are reduced, the refrigeration efficiency is improved, and the service life is prolonged;
in addition, through the designed circulating pump assembly, the optimal filling rate of the refrigerant in the natural cooling mode is realized, the energy consumption is reduced, the efficiency is improved, and a good energy-saving effect is obtained;
besides, the fire extinguishing assembly is further arranged, and when a fire accident occurs in the battery, a valve on the fire extinguishing pipeline can be opened to extinguish the fire.
It should be understood that the description in this summary is not intended to limit the critical or essential features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model.
Other features of the present utility model will become apparent from the description that follows.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a block diagram of a battery thermal management system with a cold and hot control belt fluorine pump cycle according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a refrigeration mode;
FIG. 3 is a schematic diagram of a heating mode;
FIG. 4 is a schematic diagram of the natural cooling mode;
reference numerals in the drawings: 1. a compressor; 2. a condenser; 3. a liquid storage tank; 4. an evaporator; 5. a gas-liquid separator; 6. a main pipeline; 7. a first branch line; 8. a second branch line; 9. a one-way valve; 10. an expansion valve; 11. a fluorine pump; 12. an electromagnetic valve; 13. a fire extinguishing branch pipe; 14. a valve; 15. spraying; 16. and a four-way valve.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1, an embodiment of the present utility model provides a battery thermal management system with a heat and cold control and a fluorine pump cycle, which includes a compressor 1, a condenser 2, a liquid storage tank 3, an evaporator 4 and a gas-liquid separator 5 connected end to end through a main pipeline; a throttling mechanism and a circulating pump assembly are arranged between the condenser 2 and the evaporator 4, and the circulating pump assembly is connected with the throttling mechanism in parallel; a four-way valve 16 is arranged between the compressor and the condenser; a fire extinguishing assembly is arranged on a pipeline between the evaporator 4 and the throttling mechanism and the circulating pump assembly; the four-way valve 16 is connected with the gas-liquid separator 5 through a first branch pipeline 7, the outlet end of the gas-liquid separator 5 is connected with the inlet end of the condenser 2 through a second branch pipeline 8, and the first branch pipeline 7 and the second branch pipeline 8 are respectively provided with a one-way valve 9.
The one-way valve 9 on the first branch pipeline 7 is used for leading the direction of the compressor 1 to the evaporator 4 to be on and reversing;
the one-way valve 9 on the second branch pipeline 8 is used for leading the evaporator 4 to flow to the condenser 2 until the direction is the on direction;
the inlet of the four-way valve 16 is connected with the exhaust pipe of the compressor 1, the middle of the other three pipes is connected with the muffler pipe of the compressor 1, the left side is connected with the evaporator 4, and the right side is connected with the condenser 2.
The liquid storage tank 3 stores therein a refrigerant, preferably a halocarbon refrigerant such as freon.
Preferably, the throttle mechanism is an expansion valve 10.
Preferably, the circulating pump assembly comprises a circulating pump and an electromagnetic valve 12, and the circulating pump is a fluorine pump 11 or a two-phase flow pump.
Preferably, the fire extinguishing assembly comprises a fire extinguishing branch pipe 13, the fire extinguishing branch pipe 13 is arranged on a pipeline between the evaporator 4 and the expansion valve 10, and a valve 14 is arranged on the fire extinguishing branch pipe 13; the fire extinguishing branch pipe 13 is provided with a spray head 15 corresponding to the battery on one side pipeline of the outlet end of the valve 14, and is used for extinguishing fire through the spray head 15 by conveying the refrigerant in the main pipeline 6 to the fire extinguishing branch pipe 13 when the fire accident occurs on the battery, and opening the valve 14.
Preferably, the device also comprises a control module and a temperature sensor for detecting the humidity difference between the inside and the outside of the battery energy storage cabinet; the signal input end of the control module is connected with the signal output end of the temperature sensor and is used for controlling the work of the battery thermal management system according to the signal transmitted and recorded by the temperature sensor.
The temperature sensor, the compressor 1, the evaporator 4, the condenser 2, the electromagnetic valve 12, the fluorine pump 11, the four-way valve 16, the expansion valve 10, the gas-liquid separator 5 and other structures are electrically connected with the control module.
The heat exchangers of each layer are one group of heat exchangers, one group, two groups or multiple groups of heat exchangers of the same layer are provided with a cooler, or one group, two groups or multiple groups of heat exchangers of two adjacent layers are provided with a cooler.
The heat exchanger comprises a heat exchanger header and a heat exchanger cold plate, wherein the heat exchanger header is wider than the heat exchanger cold plate by a preset width.
The cooling mode of the cooler is air cooling, water cooling or evaporative cooling;
referring to fig. 2, a schematic diagram of the operation of the battery thermal management system in the cooling mode is shown
When the temperature sensor monitors that the temperature difference between the inside and the outside of the battery cabinet exceeds a set range, namely the working temperature of the battery exceeds a threshold value, the control module receives a signal and starts a refrigeration mode of the battery thermal management system; the compressor 1, the condenser 2, the liquid storage tank 3, the evaporator 4 and the gas-liquid separator 5 are connected end to end through a main pipeline 6, wherein an inlet of the four-way valve 16 is connected with an exhaust port of the compressor 1, a left outlet of the three outlets is connected with an inlet of the condenser 2, and an outlet in the middle is connected with an inlet end of the compressor 1 in a backflow mode; the high-temperature and high-pressure gas from the compressor 1 enters the condenser 2 through the four-way valve 16, passes through the liquid storage tank 3 and the expansion valve 10, then conveys low-temperature, low-pressure and liquid vaporous refrigerant to the evaporator 4, exchanges heat through the evaporator 4, absorbs heat, cools the battery, conveys gasified refrigerant to the inlet of the compressor 1 through the gas-liquid separator 5, namely circularly works in the direction shown by an arrow on fig. 2, and carries out refrigeration work; namely, the cooling mode of the battery thermal management system is used for cooling the battery.
Referring to fig. 3, a schematic diagram of the operation of a heating mode of the battery thermal management system
When the temperature sensor monitors that the temperature difference between the inside and the outside of the battery cabinet is lower than a set range, namely the working temperature of the battery is lower than a threshold value, the control module receives a signal and starts a heating mode of the battery thermal management system; the compressor 1, the condenser 2, the liquid storage tank 3, the expansion valve 10, the evaporator 4 and the gas-liquid separator 5 are connected end to end through a main pipeline 6; wherein, through the switching-over of four-way valve 16, the inlet of four-way valve 16 connects the air vent of compressor 1, an export connects to evaporator 4 through the gas-liquid separator 5 through the first branch pipeline 7, an export connects to the inlet of condenser 2, an export connects to the inlet of compressor 1 as the backward flow; the refrigerant circulates according to the reverse process in the refrigeration mode, namely, the direction indicated by an arrow in fig. 3, the flow direction of the refrigerant is the direction from the compressor 1, enters the evaporator 4 through the gas-liquid separator 5 through the first branch pipeline 7, then flows back to the inlet of the compressor 1 through the expansion valve 10, the liquid storage tank 3 and the condenser 2 from the outlet of the condenser 2 through one port of the four-way valve 16, and the purpose of heating is achieved through the circulation.
Referring to fig. 4, a schematic diagram of the operation of the battery thermal management system in the natural cooling mode is shown
In the transitional season, the air conditioner can use an outdoor free cold source to achieve the aim of temperature control, namely a self-recognition cooling mode of the battery thermal management system; wherein, the fluorine pump 11, the evaporator 4, the gas-liquid separator 5, the condenser 2, the liquid storage tank 3 and the electromagnetic valve 12 are connected end to end; the refrigerator circularly works in the direction indicated by the arrow in fig. 4, so that the problem that the existing air conditioner cannot adopt an outdoor free cold source for energy saving during transitional seasons is solved, the temperature controllability of the energy storage battery is met, the energy saving of the system is realized, and the service life of the energy storage battery is prolonged.
In the description of the present specification, the terms "connected," "mounted," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The battery thermal management system with the cold and hot control and the fluorine pump circulation is characterized by comprising a compressor, a condenser, a liquid storage tank, an evaporator and a gas-liquid separator which are connected end to end through a main pipeline; a throttling mechanism and a circulating pump assembly are arranged between the condenser and the evaporator, and the circulating pump assembly is connected with the throttling mechanism in parallel; a four-way valve is arranged between the compressor and the condenser; a fire extinguishing assembly is arranged on a pipeline between the evaporator and the throttling mechanism and between the evaporator and the circulating pump assembly; the pipeline that is connected between the cross valve with gas-liquid separator sets up to first branch pipeline, gas-liquid separator's exit end with be connected through the second branch pipeline between the entrance point of condenser, be provided with the check valve on first branch pipeline and the second branch pipeline respectively.
2. The battery thermal management system with a thermally controlled fluorine pump cycle of claim 1, wherein the throttle mechanism is an expansion valve.
3. The battery thermal management system with cold and hot control of a fluorine pump cycle of claim 1, wherein the circulation pump assembly comprises a circulation pump and a solenoid valve, the circulation pump being a fluorine pump.
4. The battery thermal management system with a cold and hot control fluorine pump cycle of claim 1, wherein the fire suppression assembly comprises a fire suppression branch conduit disposed on a line between the evaporator and the throttle mechanism, the fire suppression branch conduit having a valve disposed thereon; and a spray head is arranged on a pipeline on one side of the outlet end of the valve, which corresponds to the battery, of the fire extinguishing branch pipeline.
5. The battery thermal management system with cold and hot control and fluorine pump circulation according to claim 1, further comprising a control module and a temperature sensor for detecting humidity difference inside and outside the battery energy storage cabinet; and the signal input end of the control module is connected with the signal output end of the temperature sensor and is used for controlling the work of the battery thermal management system according to the signal transmitted and recorded by the temperature sensor.
6. The battery thermal management system with a cold and hot control fluorine pump cycle of claim 5, wherein the compressor, four-way valve, condenser, solenoid valve, fluorine pump, expansion valve, evaporator, gas-liquid separator are all electrically connected with the control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320360559.XU CN219677349U (en) | 2023-03-02 | 2023-03-02 | Battery thermal management system with cold and hot control and fluorine pump circulation functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320360559.XU CN219677349U (en) | 2023-03-02 | 2023-03-02 | Battery thermal management system with cold and hot control and fluorine pump circulation functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219677349U true CN219677349U (en) | 2023-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320360559.XU Active CN219677349U (en) | 2023-03-02 | 2023-03-02 | Battery thermal management system with cold and hot control and fluorine pump circulation functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219677349U (en) |
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2023
- 2023-03-02 CN CN202320360559.XU patent/CN219677349U/en active Active
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