CN117199628A - Heat pump type thermal management system for electrochemical energy storage - Google Patents
Heat pump type thermal management system for electrochemical energy storage Download PDFInfo
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- CN117199628A CN117199628A CN202311276332.8A CN202311276332A CN117199628A CN 117199628 A CN117199628 A CN 117199628A CN 202311276332 A CN202311276332 A CN 202311276332A CN 117199628 A CN117199628 A CN 117199628A
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- 238000012983 electrochemical energy storage Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 119
- 238000001816 cooling Methods 0.000 claims abstract description 81
- 239000003507 refrigerant Substances 0.000 claims abstract description 57
- 239000000498 cooling water Substances 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000002609 medium Substances 0.000 claims description 42
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000012736 aqueous medium Substances 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention provides a heat pump type heat management system for electrochemical energy storage, which comprises a water cooling circulation loop, a refrigerant cooling circulation loop and a controller. The refrigerant cooling circulation loop comprises a compressor, a water-cooled condenser, a first thermal expansion valve, an air-cooled heat exchanger, a second thermal expansion valve, a plate-type water medium evaporator and a gas-liquid separator. The main loop of the water cooling circulation loop comprises a water pump, a first three-way valve, a second three-way valve, a PTC electric heater and a plate-type water medium evaporator. The water medium flowing out of the first outlet of the second three-way valve directly flows into the PTC electric heater; the bypass comprises a low-temperature radiator arranged between a second outlet of the first three-way valve and a cooling water inlet; the controller is used for switching the circulation operation of the main loop and/or the bypass by controlling the first three-way valve and the second three-way valve. The invention can realize multi-mode switching and joint work, accurately control temperature, simplify pipeline arrangement and reduce power consumption.
Description
Technical Field
The invention relates to the technical field of electrochemical energy storage systems, in particular to a heat pump type thermal management system for electrochemical energy storage.
Background
The carrier of electrochemical energy storage is a battery system, and larger heat is generated in the process of charging and discharging the battery, so that the working efficiency of the battery is influenced, and a series of safety problems are caused. When the ambient temperature is low in winter, the battery temperature is too low to realize the function of charging and discharging, and the battery system needs to be cooled or heated so as to ensure the high-efficiency, long-life and safe operation of the battery.
The existing thermal management system for cooling and heating the battery system has the defects of larger energy consumption, single working mode, complex air conditioner pipeline, rough temperature control and the like during heating, and is particularly characterized in that: the PTC single heat source is used for heating the medium, and the heating mode has the advantages of high power consumption, low energy efficiency ratio and high energy consumption; in the scheme of the water-cooled condenser heat pump, the flow resistance of the water circulation is larger; the heat pump scheme adopts a four-way valve for reversing, and an air conditioner pipeline is complex.
Disclosure of Invention
The invention aims to provide a heat pump type heat management system for electrochemical energy storage, which can realize multi-mode switching and joint work, achieve the aim of accurate temperature control, simplify pipeline arrangement and reduce power consumption.
According to a first aspect of the object of the present invention, a heat pump type thermal management system for electrochemical energy storage is provided, comprising a water cooling circulation loop, a refrigerant cooling circulation loop and a controller; the controller is used for controlling the operation of the refrigerant cooling circulation loop and the water cooling circulation loop;
the refrigerant cooling circulation loop comprises a compressor, a water-cooled condenser, a first thermal expansion valve, an air-cooled heat exchanger, a second thermal expansion valve, a plate-type water medium evaporator and a gas-liquid separator which are sequentially connected through pipelines, wherein the output end of the gas-liquid separator is connected with the compressor, and a refrigerant side stop valve is connected in parallel between the first thermal expansion valve and the air-cooled heat exchanger;
the water cooling circulation loop comprises a main loop and a bypass, wherein:
the main loop comprises a cooling water outlet and a cooling water inlet which are connected with a cooling channel in the battery pack, and a water pump, a first three-way valve, a second three-way valve, a PTC electric heater and a plate-type water medium evaporator which are connected between the cooling water outlet and the cooling water inlet through pipelines in turn; a water side stop valve is also connected in parallel between the PTC electric heater and the cooling water inlet;
the first outlet of the first three-way valve is communicated with the inlet of the second three-way valve, and the water-cooling condenser is connected between the first outlet of the second three-way valve and the PTC electric heater, so that water medium flowing out of the second outlet flows into the PTC electric heater after passing through the water-cooling condenser; the water medium flowing out of the first outlet of the second three-way valve directly flows into the PTC electric heater;
the bypass comprises a low-temperature radiator arranged between a second outlet of the first three-way valve and a cooling water inlet;
the controller is used for switching the circulation operation of the main loop and/or the bypass by controlling the first three-way valve and the second three-way valve.
As an alternative embodiment, the controller is arranged to control the operation of the water-cooled condenser, the plate-type aqueous medium evaporator, the PTC electric heater and the low-temperature radiator as heating or cooling means for the aqueous medium flowing in the aqueous circuit, the temperature control of the aqueous circuit being effected in a single or combined operation.
As an optional embodiment, the first three-way valve and the second three-way valve are three-way proportional valves, and the controller adjusts the flow of the water medium in the main loop and/or the bypass by controlling the opening ratio of the first three-way valve and the second three-way valve.
As an alternative embodiment, in the refrigerant cooling circulation loop, the refrigerant gas generated by the compressor flows through the first heat exchange channel of the water-cooled condenser;
in the water cooling circulation loop, the water medium flowing out of the second outlet of the second three-way valve flows into the PTC electric heater after passing through the second heat exchange channel of the water cooling condenser.
As an alternative embodiment, the air-cooled heat exchanger and the low-temperature heat exchanger are respectively provided with a corresponding cooling fan.
As an alternative embodiment, a first temperature and pressure integrated sensor is arranged between the air-cooled heat exchanger and the second thermal expansion valve, and is used for detecting the pressure and the temperature of condensed refrigerant liquid;
a second temperature and pressure integrated sensor is arranged between the plate-type water medium evaporator and the gas-liquid separator and is used for detecting the pressure and temperature of the refrigerant gas flowing out of the plate-type water medium evaporator;
the first temperature and pressure integrated sensor and the second temperature and pressure integrated sensor are respectively and electrically connected with the controller.
As an alternative embodiment, a second temperature sensor is arranged in the pipeline at the upstream of the cooling water inlet and is used for detecting the temperature of the water medium flowing into the battery pack;
a third temperature sensor is arranged in a downstream pipeline of the cooling water outlet and is used for detecting the temperature of the water medium flowing out of the battery pack;
the second temperature sensor T and the third temperature sensor T are respectively and electrically connected to the controller.
As an alternative embodiment, the heat pump type thermal management system is further provided with an ambient temperature sensor electrically connected to the controller for detecting an ambient temperature.
The heat pump type thermal management system for electrochemical energy storage has the remarkable advantages that:
(1) The heat pump scheme is integrated in the energy storage heat management system, and specifically comprises the following steps: heating through a water-cooling condenser in a heat pump heating mode; in the refrigeration mode, the heat exchange liquid does not pass through the water-cooled condenser; in the heating mode, the heat exchange liquid heats the liquid through the water-cooling condenser; the refrigerating mode and the heating mode are adopted, the refrigerant loop does not need reversing treatment, and the pipeline arrangement and the system control are simpler;
(2) In the existing water-cooling condenser heat pump scheme, a bypass loop is arranged at the refrigerant side of a plate-type water medium evaporator, a stop valve is arranged on a refrigerant pipeline, when the heat pump circulates, the stop valve is opened, the refrigerant does not pass through the plate-type water medium evaporator and enters a compressor through the bypass loop, the pipeline is complex, and the water circulation flow resistance is larger; the invention cancels the refrigerant stop valve, adds the water stop valve on the water circulation side of the plate-type water medium evaporator, and the stop valve is opened, so that the water does not pass through the plate-type water medium evaporator in the heat pump mode, and the flow resistance of the water side is reduced; according to the invention, under the condition that system components are not added, the flow resistance of the water circulation of the system is reduced, the flow rate of the system is increased, the power consumption is reduced, the temperature difference of the water system is reduced, and the temperature of the battery pack is more uniform;
(3) The invention can realize the joint work of a plurality of modes, and the water flow passing through the evaporator, the low-temperature radiator and the water-cooling condenser is regulated by the proportion of the two three-way valves, so that the proportion of high-temperature and low-temperature heat exchange liquid is accurately controlled, and the accurate temperature control is realized.
It should be understood that all combinations of the foregoing concepts, as well as additional concepts described in more detail below, may be considered a part of the inventive subject matter of the present disclosure as long as such concepts are not mutually inconsistent. In addition, all combinations of claimed subject matter are considered part of the disclosed inventive subject matter.
The foregoing and other aspects, embodiments, and features of the present teachings will be more fully understood from the following description, taken together with the accompanying drawings. Other additional aspects of the invention, such as features and/or advantages of the exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the embodiments according to the teachings of the invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the invention will now be described, by way of example, with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a heat pump type thermal management system for electrochemical energy storage according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a heat pump type thermal management system for electrochemical energy storage in a compressor cooling-by-cooling mode according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a heat pump type thermal management system for electrochemical energy storage in a low temperature radiator single cooling mode according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a heat pump type thermal management system for electrochemical energy storage according to an embodiment of the present invention in a simultaneous cooling mode of a compressor and a low temperature radiator.
Fig. 5 is a schematic diagram of a heat pump type thermal management system for electrochemical energy storage in a battery self-circulation temperature equalization mode and a PTC individual heating mode according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a heat pump type thermal management system for electrochemical energy storage according to an embodiment of the present invention in a heat pump mode alone heating mode and in a PTC and heat pump mode simultaneous heating mode.
Fig. 7 is a schematic diagram of a heat pump thermal management system for electrochemical energy storage in PTC heating and bypass low temperature radiator attemperation mode according to an embodiment of the present invention.
Detailed Description
For a better understanding of the technical content of the present invention, specific examples are set forth below, along with the accompanying drawings.
Aspects of the invention are described in this disclosure with reference to the drawings, in which are shown a number of illustrative embodiments. The embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, may be implemented in any of a number of ways, as the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the disclosure may be used alone or in any suitable combination with other aspects of the disclosure.
The heat pump type thermal management system for electrochemical energy storage in combination with the embodiment shown in fig. 1 includes a water cooling circulation loop, a refrigerant cooling circulation loop, and a controller 15; the controller 15 is used to control the operation of the refrigerant cooling circulation circuit and the water cooling circulation circuit.
As shown in fig. 1, the refrigerant cooling cycle includes a compressor 9, a water-cooled condenser 10, a first thermal expansion valve 11, an air-cooled heat exchanger 13, a second thermal expansion valve 2, a plate-type aqueous medium evaporator 3, and a gas-liquid separator connected in this order through pipes, wherein an output end of the gas-liquid separator is connected to the compressor 9, and a refrigerant-side shutoff valve 12 is connected in parallel between the first thermal expansion valve 11 and the air-cooled heat exchanger 13.
As shown in connection with fig. 1, the water cooling circulation loop includes a main loop and a bypass.
The main circuit comprises a cooling water outlet 101 and a cooling water inlet 102 which are connected with a cooling channel inside the battery pack 1, and a water pump 4, a first three-way valve 6, a second three-way valve 7, a PTC electric heater 5 and a plate-type water medium evaporator 3 which are connected between the cooling water outlet 101 and the cooling water inlet 102 through pipelines in turn; a water-side shutoff valve 17 is also connected in parallel between the PTC electric heater 5 and the cooling water inlet 102.
Referring to fig. 1, a first outlet of the first three-way valve 6 is communicated with an inlet of the second three-way valve 7, and a water-cooling condenser 10 is connected between the first outlet of the second three-way valve 7 and the PTC electric heater 5, so that water medium flowing out of the second outlet flows into the PTC electric heater 5 after passing through the water-cooling condenser 10; the aqueous medium flowing out of the first outlet of the second three-way valve 7 directly flows into the PTC electric heater 5.
As shown in connection with fig. 1, the bypass comprises a low temperature radiator 14 arranged between the second outlet of the first three-way valve 6 and the cooling water inlet 102.
The air-cooled heat exchanger 13 and the low-temperature heat exchanger 14 are each provided with a corresponding radiator fan 16.
As shown in connection with fig. 1, the controller 15 switches the circulation operation of the main circuit and/or the bypass by controlling the first three-way valve 6, the second three-way valve 7.
In the embodiment of the invention, the first three-way valve 6 and the second three-way valve 7 are three-way proportional valves, and the controller 15 adjusts the flow of the water medium in the main loop and/or the bypass by controlling the opening ratio of the first three-way valve 6 and the second three-way valve 7.
In the embodiment of the present invention, in combination with fig. 1, in the refrigerant cooling cycle, the refrigerant gas generated by the compressor 9 flows through the first heat exchange passage of the water-cooled condenser 10. In the water cooling circulation loop, the water medium flowing out of the second outlet of the second three-way valve 7 flows into the PTC electric heater 5 after passing through the second heat exchange channel of the water cooling condenser 10.
In the embodiment of the present invention, a first temperature and pressure integrated sensor is disposed between the air-cooled heat exchanger 13 and the second thermal expansion valve 2, for detecting the pressure and temperature of the condensed refrigerant liquid;
a second temperature and pressure integrated sensor is arranged between the plate-type water medium evaporator 3 and the gas-liquid separator 8 and is used for detecting the pressure and temperature of the refrigerant gas flowing out of the plate-type water medium evaporator 3;
the first temperature and pressure integrated sensor and the second temperature and pressure integrated sensor are respectively and electrically connected with the controller 15.
In the embodiment of the present invention, a second temperature sensor T2 is provided in the pipe upstream of the cooling water inlet 102 for detecting the temperature of the aqueous medium flowing into the battery pack; a third temperature sensor T3 is provided in the downstream line of the cooling water outlet 101 for detecting the temperature of the aqueous medium flowing out of the battery pack.
The second temperature sensor T2 and the third temperature sensor T3 are electrically connected to the controller 15, respectively.
As shown in connection with fig. 1, an expansion tank 18 is provided in the line downstream of the cooling water outlet 101.
In an embodiment of the present invention, the heat pump type thermal management system is further provided with an ambient temperature sensor T1 electrically connected to the controller 2000 for detecting an ambient temperature.
In connection with the embodiment shown in fig. 1, a controller 15 is provided for controlling the operation of the water-cooled condenser 10, the plate-type aqueous medium evaporator 3, the PTC electric heater 5 and the low-temperature radiator 14, which serve as heating or cooling means for the aqueous medium flowing in the aqueous circuit, and the temperature control of the aqueous circuit is effected in a single or combined operation.
In the embodiment of the invention, the water-cooled condenser 10 and the plate-type water medium evaporator 3 are used as heat exchange components of refrigerant circulation and water circulation, the water-cooled condenser 10 is used as a water heating component of a heat pump mode, and the plate-type water medium evaporator 3 is used as a water cooling component of a compressor refrigeration mode; the PTC electric heater 5 is a heating part of water circulation, and the low-temperature radiator 14 is a cooling part of water circulation. The water-cooled condenser 10, the plate-type water medium evaporator 3, the PTC electric heater 5 and the low-temperature radiator 14 are used as heating or cooling components of the water circulation and can be controlled by the controller 15 to achieve the purpose of accurately controlling the temperature of the water circulation in a single or combined working mode.
The operation of the energy storage thermal management system according to the invention in different modes of operation will be described in more detail below with reference to the accompanying drawings.
(1) The compressor is in a single refrigeration cooling mode, and the application scene is a working condition that the environment temperature is high or the battery pack needs to be cooled greatly.
As shown in fig. 2, in this mode, the refrigerant cooling cycle and the water cooling cycle specifically participate in the operation as follows:
refrigerant cycle side: the compressor 9 works to generate high-temperature and high-pressure refrigerant gas, the high-temperature and high-pressure refrigerant gas flows through the water-cooling condenser 10, meanwhile, the second three-way valve 7 is used for closing the water circulation flowing through the water-cooling condenser 10, no heat exchange exists between the high-temperature refrigerant and the water, the first electronic expansion valve 11 does not work and is in a closed state, the refrigerant side stop valve 12 is opened, the high-temperature and high-pressure refrigerant gas flows through the air-cooling heat exchanger 13, the corresponding cooling fan 16 works, the high-temperature and high-pressure refrigerant gas is changed into medium-temperature and high-pressure refrigerant liquid after being cooled, the medium-temperature and high-pressure refrigerant liquid is expanded through the second electronic expansion valve 2, the medium-temperature and high-pressure refrigerant gas is changed into superheated refrigerant gas after the heat of the water circulation is absorbed by the plate-type water medium evaporator 3, and then the superheated refrigerant gas enters the compressor after passing through the gas-liquid separator 8, and the refrigerant circulation is formed;
water circulation side: the water stop valve 17 is closed, after the water is cooled in the plate-type water medium evaporator 3, the temperature of the water rises after flowing through the battery pack 1, and the water returns to the plate-type water medium evaporator 3 for cooling again after passing through the water pump 4, the first three-way valve 6 and the second three-way valve 7, and the water is circulated, so that the purposes of water temperature control and battery pack cooling are achieved.
(2) The low-temperature radiator is in a single cooling mode, and the application scene is a working condition with lower ambient temperature.
As shown in fig. 3, in this mode, the refrigerant cooling cycle and the water cooling cycle specifically participate in the operation as follows:
the water forms a water circulation through the battery pack 1, the water pump 4, the first three-way valve 6 and the low-temperature radiator 14, and the cooling fan 16 cools the water in the low-temperature radiator 14 and then flows back to the battery pack 1 to form a water circulation.
Through the mode, the defect that the compressor cannot work at low temperature is overcome, the heat in the low-temperature radiator 14 is taken away by the air in the environment to achieve the purpose of water temperature control, and meanwhile, the compressor is prevented from working, so that the purpose of energy conservation is achieved.
(3) The compressor and the low-temperature radiator are in a cooling mode at the same time, and the application scene is a working condition with medium ambient temperature and medium cooling requirement of the battery pack.
As shown in fig. 4, in this mode, the refrigerant cooling circulation loop and the water cooling circulation loop participate in the cooling operation at the same time, which is a combined working condition of the independent cooling mode of the compressor in fig. 2 and the independent cooling mode of the low-temperature radiator in fig. 3, the first three-way valve 6 works, and the water flow rate flowing through the plate-type water medium evaporator 3 and the low-temperature radiator 14 is adjusted in proportion, so that the energy consumption is reduced to the maximum extent, and the purpose of accurate temperature control is also realized.
(4) The battery pack self-circulation temperature equalization mode is applied to a scene requiring temperature equalization with larger internal temperature difference of the battery pack.
In this mode, as shown in fig. 5, only the water pump 4, the first three-way valve 6 and the second three-way valve 7 participate in the operation, and the other cooling and heating components are not operated, i.e. the PTC electric heater 5 is not operated.
As shown in fig. 5, after heat exchange, water entering the battery pack 1 flows out of the battery pack 1 and continues to flow back into the battery pack again, and the temperature of the cells in the battery pack 1 is equalized.
(5) The PTC single heating mode is applied to the working condition that the compressor with extremely low ambient temperature is not suitable for working and the battery pack needs to be heated.
As shown in fig. 5, the PTC electric heater 5 operates on the basis of the battery pack self-circulation temperature equalization mode to heat the water flowing therethrough, thereby achieving the purpose of temperature control of the water side and the battery pack.
(6) The independent heat pump heating mode is applied to the working condition that the environment temperature is low and the battery pack needs to be heated.
As shown in fig. 6, in this mode, the refrigerant cooling cycle and the water cooling cycle specifically participate in the operation as follows:
refrigerant cycle side: the refrigerant compressor 9 operates to generate high-temperature high-pressure refrigerant gas, the high-temperature high-pressure refrigerant gas enters the air-cooled heat exchanger 13 through the first electronic expansion valve 11, the first electronic expansion valve 11 is in an operation state, the refrigerant side stop valve 12 is in a closed state, the refrigerant gas expands and absorbs heat in the air-cooled heat exchanger 13, the second electronic expansion valve 2 has the largest opening degree, and enters the plate-type water medium evaporator 3 after being expanded through the second electronic expansion valve 2 and then enters the compressor after passing through the gas-liquid separator 8 to form a refrigerant cycle;
water circulation side: the first three-way valve 6 and the second three-way valve 7 work to enable water to flow through the water-cooled condenser 10 to heat the water, the PTC electric heater 5 does not work in the mode, the water side stop valve 17 is opened to enable water to circulate without passing through the plate-type water medium evaporator 3 so as to reduce the flow resistance of a water system, and the controller controls the rotating speed of the compressor to achieve the purposes of temperature rise and temperature control of the water side and the battery pack.
(7) PTC and heat pump modes are heating modes simultaneously.
As shown in fig. 6, the PTC electric heater is controlled to operate on the basis of the aforementioned heat pump individual heating mode, so that PTC heating simultaneously heats water flowing therethrough to achieve the rapid temperature rise requirement of the water side and the battery pack.
(8) PTC heating and bypass low temperature radiator attemperation mode.
In this mode, as shown in fig. 7, the refrigerant cooling cycle and the water cooling cycle specifically participate in the operation as follows:
the cooling fan 16 does not work, the refrigerant cooling circulation loop does not work, and the plate-type water medium evaporator 3 and the water-cooling condenser 10 do not work;
the first three-way valve 6 is controlled to work, and the water flow flowing through the PTC electric heater 5 and the low-temperature radiator 14 is proportionally regulated, so that the water flow with a certain proportion is heated by the PTC electric heater 5, and the aim of accurate temperature control is achieved.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the invention is defined by the appended claims.
Claims (8)
1. A heat pump type thermal management system for electrochemical energy storage, characterized by comprising a water cooling circulation loop, a refrigerant cooling circulation loop and a controller (15); the controller (15) is used for controlling the operation of the refrigerant cooling circulation loop and the water cooling circulation loop;
the refrigerant cooling circulation loop comprises a compressor (9), a water-cooled condenser (10), a first thermal expansion valve (11), an air-cooled heat exchanger (13), a second thermal expansion valve (2), a plate-type water medium evaporator (3) and a gas-liquid separator which are sequentially connected through pipelines, wherein the output end of the gas-liquid separator is connected with the compressor (9), and a refrigerant side stop valve (12) is connected in parallel between the first thermal expansion valve (11) and the air-cooled heat exchanger (13);
the water cooling circulation loop comprises a main loop and a bypass, wherein:
the main loop comprises a cooling water outlet (101) and a cooling water inlet (102) which are connected with a cooling channel in the battery pack (1), and a water pump (4), a first three-way valve (6), a second three-way valve (7), a PTC electric heater (5) and a plate-type water medium evaporator (3) which are connected between the cooling water outlet (101) and the cooling water inlet (102) through pipelines in sequence; a water side stop valve (17) is also connected in parallel between the PTC electric heater (5) and the cooling water inlet (102);
the first outlet of the first three-way valve (6) is communicated with the inlet of the second three-way valve (7), the water-cooled condenser (10) is connected between the first outlet of the second three-way valve (7) and the PTC electric heater (5), so that water medium flowing out of the second outlet flows into the PTC electric heater (5) after passing through the water-cooled condenser (10); the water medium flowing out of the first outlet of the second three-way valve (7) directly flows into the PTC electric heater (5);
the bypass comprises a low temperature radiator (14) arranged between the second outlet of the first three-way valve (6) and the cooling water inlet (102);
the controller (15) controls the first three-way valve (6) and the second three-way valve (7) to switch the circulation operation of the main loop and/or the bypass.
2. The heat pump type thermal management system for electrochemical energy storage according to claim 1, wherein the controller is configured to control the operation of the water-cooled condenser (10), the plate-type aqueous medium evaporator (3), the PTC electric heater (5) and the low-temperature radiator (14) as heating or cooling means of aqueous medium flowing in the aqueous cycle, and to realize temperature control of the aqueous cycle in a single or combined operation manner.
3. The heat pump type thermal management system for electrochemical energy storage according to claim 1, wherein the first three-way valve (6) and the second three-way valve (7) are three-way proportional valves, and the controller (15) adjusts the flow rate of the water medium in the main circuit and/or the bypass by controlling the opening ratio of the first three-way valve (6) and the second three-way valve (7).
4. The heat pump type thermal management system for electrochemical energy storage according to claim 1, wherein in the refrigerant cooling cycle, the refrigerant gas generated by the compressor (9) flows through the first heat exchange passage of the water-cooled condenser (10);
in the water cooling circulation loop, the water medium flowing out of the second outlet of the second three-way valve (7) flows into the PTC electric heater (5) after passing through the second heat exchange channel of the water cooling condenser (10).
5. The heat pump type thermal management system for electrochemical energy storage according to claim 1, wherein the air-cooled heat exchanger (13) and the low-temperature heat exchanger (14) are each provided with a corresponding radiator fan (16).
6. The heat pump type thermal management system for electrochemical energy storage according to claim 1, wherein a first temperature and pressure integrated sensor is arranged between the air-cooled heat exchanger (13) and the second thermal expansion valve (2) for detecting the pressure and temperature of the condensed refrigerant liquid;
a second temperature and pressure integrated sensor is arranged between the plate-type water medium evaporator (3) and the gas-liquid separator (8) and is used for detecting the pressure and temperature of the refrigerant gas flowing out of the plate-type water medium evaporator (3);
the first temperature and pressure integrated sensor and the second temperature and pressure integrated sensor are respectively and electrically connected with the controller (15).
7. The heat pump type thermal management system for electrochemical energy storage according to claim 1, characterized in that a second temperature sensor (T2) is provided in the pipe upstream of the cooling water inlet (102) for detecting the temperature of the aqueous medium flowing into the battery;
a third temperature sensor (T3) is arranged in a pipeline downstream of the cooling water outlet (101) and is used for detecting the temperature of the water medium flowing out of the battery pack;
the second temperature sensor (T2) and the third temperature sensor (T3) are respectively and electrically connected to the controller (15).
8. The heat pump type thermal management system for electrochemical energy storage according to claim 1, further provided with an ambient temperature sensor (T1) electrically connected to the controller (2000) for detecting an ambient temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311276332.8A CN117199628A (en) | 2023-09-30 | 2023-09-30 | Heat pump type thermal management system for electrochemical energy storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311276332.8A CN117199628A (en) | 2023-09-30 | 2023-09-30 | Heat pump type thermal management system for electrochemical energy storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117199628A true CN117199628A (en) | 2023-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311276332.8A Pending CN117199628A (en) | 2023-09-30 | 2023-09-30 | Heat pump type thermal management system for electrochemical energy storage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117199628A (en) |
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2023
- 2023-09-30 CN CN202311276332.8A patent/CN117199628A/en active Pending
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