CN220700843U - Heat pump system - Google Patents
Heat pump system Download PDFInfo
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- CN220700843U CN220700843U CN202322492731.XU CN202322492731U CN220700843U CN 220700843 U CN220700843 U CN 220700843U CN 202322492731 U CN202322492731 U CN 202322492731U CN 220700843 U CN220700843 U CN 220700843U
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229910052802 copper Inorganic materials 0.000 claims abstract description 65
- 239000010949 copper Substances 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000002918 waste heat Substances 0.000 claims abstract description 16
- 238000004378 air conditioning Methods 0.000 claims description 40
- 238000001514 detection method Methods 0.000 claims description 24
- 238000011084 recovery Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 abstract description 57
- 238000010438 heat treatment Methods 0.000 abstract description 36
- 239000007789 gas Substances 0.000 description 15
- 238000001816 cooling Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 230000009977 dual effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Air-Conditioning For Vehicles (AREA)
Abstract
The embodiment of the utility model discloses a heat pump system. The heat pump system includes: the device comprises an electric compressor, a first on-off stop valve, a second on-off stop valve, a third on-off stop valve, a fourth on-off stop valve, an air conditioner box module, a first electronic expansion valve, a front end module, a first one-way stop valve, a battery water pump, a water valve, a motor, a waste heat recoverer, a first electronic on-off expansion valve, a second electronic on-off expansion valve, a battery pack, a gas-liquid separator, an inlet copper shaft tube and an outlet copper shaft tube. The utility model can realize the heat exchange between the refrigerant at the inlet of the battery pack and the refrigerant at the outlet of the battery pack in the battery heating mode, thereby reducing the superheat degree of the refrigerant at the inlet of the battery pack.
Description
Technical Field
The embodiment of the utility model relates to the technical field of automobile heat management, in particular to a heat pump system.
Background
Along with the popularization of new energy automobile markets, novel new energy automobile thermal management systems are also layered endlessly. Under the promotion of rapid development of integrated modules of new energy thermal management systems and strong market competition, the current mainstream heat pump systems are mainly changed to two aspects gradually. One is a heat pump integrated module for weakening the refrigerant circuit and enhancing the integration of a water circuit, the refrigerant circuit only maintains a high-pressure side heat exchanger and a low-pressure side heat exchanger, and the rest heat exchange is completed by a waterway. And the other is a heat pump integrated module for strengthening the water weakening loop integration of the refrigerant loop, and is most commonly a battery direct cooling and direct heating system, and the system design converts the heating and cooling of the battery from the indirect heat exchange form with the refrigerant to the direct heat exchange form so as to improve the heat exchange efficiency of the system and reduce the number of parts and the cost of the whole system to a certain extent.
Under the heating mode, the exhaust gas of the compressor directly enters the battery pack, the superheat degree of the refrigerant at the exhaust port of the compressor is higher, the refrigerant entering the battery pack is not in a gas-liquid two-phase state, after the refrigerant exchanges heat with the battery pack, the temperature change of the refrigerant is larger, and the temperature difference between the refrigerant and the refrigerant before and after the heat exchange of the battery pack is larger, so that the temperature uniformity of the battery cells of the battery pack is influenced, and further the discharge performance and the charge-discharge service life of the battery pack are influenced. The problem of higher superheat degree of the refrigerant at the inlet of a battery exists in a battery pack heating mode in the existing heat pump system, and the problem of larger temperature difference of a battery pack cell is caused by larger temperature difference of the refrigerant at the inlet and the outlet of the battery in the battery pack heating mode.
Disclosure of Invention
The utility model provides a heat pump system, which is used for realizing heat exchange between a battery pack inlet refrigerant and a battery pack outlet refrigerant in a battery heating mode so as to reduce the superheat degree of the battery pack inlet refrigerant.
According to an aspect of the present utility model, there is provided a heat pump system including: the system comprises an electric compressor, a first on-off stop valve, a second on-off stop valve, a third on-off stop valve, a fourth on-off stop valve, an air conditioner box module, a first electronic expansion valve, a front end module, a first one-way stop valve, a battery water pump, a water valve, a motor, a waste heat recoverer, a first electronic on-off expansion valve, a second electronic on-off expansion valve, a battery pack, a gas-liquid separator, an inlet copper shaft tube and an outlet copper shaft tube;
the first end of the gas-liquid separator is connected with the first end of the third on-off stop valve and the first end of the first one-way stop valve, the second end of the third on-off stop valve is connected with the fourth end of the air conditioning box module, the first end of the electric compressor is connected with the second end of the gas-liquid separator, the second end of the electric compressor is connected with the first end of the first on-off stop valve and the first end of the air conditioning box module, the second end of the air conditioning box module is connected with the first end of the first electronic expansion valve, the second end of the first electronic expansion valve is connected with the third end of the front end module, the first end of the second on-off stop valve and the first end of the outlet copper shaft tube, the first end of the water valve is connected with the first end of the front end module, the third end of the water valve is connected with the first end of the motor, the second end of the motor is connected with the second end of the battery water pump and the first end of the front end module, and the first end of the front end of the three-way stop valve is connected with the first end of the front end of the air conditioning box module;
the second end of the second on-off stop valve, the second end of the water valve, the second end of the battery water pump and the second end of the outlet copper shaft tube are respectively connected with the first end, the second end, the third end and the fourth end of the waste heat recoverer, the first end of the first electronic on-off expansion valve is connected with the second end of the outlet copper shaft tube, the second end of the first electronic on-off expansion valve is connected with the first end of the battery pack, the second end of the battery pack is connected with the first end of the second electronic on-off expansion valve, the second end of the second electronic on-off expansion valve is connected with the first end of the fourth on-off stop valve and the first end of the inlet copper shaft tube, the second end of the fourth on-off stop valve is connected with the second end of the first one-way stop valve, and the second end of the inlet copper shaft tube is connected with the second end of the first on-off stop valve.
Optionally, the air conditioning box module includes an internal condenser and an air conditioning evaporator, wherein a first end and a second end of the internal condenser are respectively used as a first input end and a first output end of the air conditioning box module, and a first end and a second end of the air conditioning evaporator are respectively used as a second input end and a second output end of the air conditioning box module.
Optionally, the front end module includes a water tank radiator and an external condenser, the first end and the second end of the water tank radiator are respectively used as the first input end and the first output end of the front end module, and the first end and the second end of the external condenser are respectively used as the second input end and the second output end of the front end module.
Optionally, the heat pump system further includes a second one-way stop valve, a third one-way stop valve, a fourth one-way stop valve and a fifth one-way stop valve, wherein the second one-way stop valve is connected between the fourth end of the front end module and the fourth end of the air conditioning tank module, the third one-way stop valve is connected between the outlet copper shaft tube and the second one-way stop valve, the fourth one-way stop valve is connected between the first electronic on-off expansion valve and the waste heat recoverer, and the fifth one-way stop valve is connected between the third end of the air conditioning tank module and the first end of the gas-liquid separator.
Optionally, the heat pump system further comprises a fifth on-off stop valve and a sixth on-off stop valve, wherein the fifth on-off stop valve is connected between the second end of the air conditioner box module and the third end of the front end module, and the sixth on-off stop valve is connected between the second end of the fifth on-off stop valve and the third end of the front end module.
Optionally, the heat pump system further comprises a second electronic expansion valve connected between the fourth end of the air conditioning tank module and the fourth end of the front end module.
Optionally, the heat pump system further comprises a first pressure temperature detection unit and a second pressure temperature detection unit, wherein the first pressure temperature detection unit is connected between the first electronic on-off expansion valve and the fourth one-way stop valve, and the second pressure temperature detection unit is connected between the first electronic on-off expansion valve and the battery pack.
Optionally, the heat pump system further comprises a third pressure temperature detection unit and a fourth pressure temperature detection unit, wherein the third pressure temperature detection unit is connected between the battery pack and the second electronic on-off expansion valve, and the fourth pressure temperature detection unit is connected between the second electronic on-off expansion valve and the fourth on-off stop valve.
Optionally, the first pressure temperature detecting unit, the second pressure temperature detecting unit, the third pressure temperature detecting unit and the fourth pressure temperature detecting unit are pressure temperature sensors.
Optionally, the water valve is a three-way water valve.
According to the technical scheme provided by the embodiment of the utility model, the inlet copper shaft tube is added to the battery inlet of the battery heating loop, the outlet copper shaft tube is added to the battery outlet of the battery heating loop, so that heat exchange between the battery pack inlet refrigerant and the battery pack outlet refrigerant in the battery heating mode is realized, the superheat degree of the battery pack inlet refrigerant is reduced, the temperature uniformity of the battery pack battery core can be maintained, and the discharge performance and the charge-discharge service life of the battery pack are prolonged. In summary, the utility model realizes the heat exchange of the internal part of the heat pump system by adding the copper shaft tube under the condition of little influence on the cost of the heat pump system, solves the problem of higher superheat degree of the refrigerant at the battery inlet in the battery pack heating mode, reduces the temperature difference between the refrigerant before and after heat exchange with the battery pack, and further solves the problem of larger temperature difference of the battery pack core caused by larger temperature difference between the refrigerant at the inlet and the outlet of the battery pack in the battery heating mode.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a heat pump system according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of yet another heat pump system provided according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of operation of a single cell heating mode according to an embodiment of the present utility model;
fig. 4 is a schematic diagram of the operation of a battery and passenger compartment simultaneous heating mode according to an embodiment of the present utility model;
fig. 5 is a schematic diagram of operation of a single cell cooling mode according to an embodiment of the present utility model;
fig. 6 is a schematic diagram of the operation of a battery and passenger compartment dual cooling mode provided in accordance with an embodiment of the present utility model.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a heat pump system according to an embodiment of the present utility model, and referring to fig. 1, an embodiment of the present utility model provides a heat pump system, including: the electric compressor 1, the first on-off stop valve 2, the second on-off stop valve 15, the third on-off stop valve 19, the fourth on-off stop valve 28, the air conditioning box module 34, the first electronic expansion valve 6, the front end module 89, the first one-way stop valve 29, the battery water pump 11, the water valve 12, the motor 13, the waste heat recoverer 14, the first electronic on-off expansion valve 23, the second electronic on-off expansion valve 26, the battery pack 24, the gas-liquid separator 30, the inlet copper shaft tube 31 and the outlet copper shaft tube 32; the first end of the gas-liquid separator 30 is connected with the first end of the third on-off stop valve 19 and the first end of the first one-way stop valve 29, the second end of the third on-off stop valve 19 is connected with the fourth end of the air conditioning tank module 34, the first end of the electric compressor 1 is connected with the second end of the gas-liquid separator 30, the second end of the electric compressor 1 is connected with the first end of the first on-off stop valve 2 and the first end of the air conditioning tank module 34, the second end of the air conditioning tank module 34 is connected with the first end of the first electronic expansion valve 6, the second end of the first electronic expansion valve 6 is connected with the third end of the front end module 89, the first end of the second on-off stop valve 15 and the first end of the outlet copper shaft tube 32, the first end of the water valve 12 is connected with the first end of the front end module 89, the third end of the water valve 12 is connected with the first end of the motor 13, the second end of the motor 13 is connected with the second end of the battery water pump 11 and the second end of the front end module 89, and the fourth end of the air conditioning tank module 34 is connected with the second end of the front end module 19; the second end of the second on-off stop valve 15, the second end of the water valve 12, the second end of the battery water pump 11, the second end of the outlet copper shaft tube 32 are respectively connected with the first end, the second end, the third end and the fourth end of the waste heat recoverer 14, the first end of the first electronic on-off expansion valve 23 is connected with the second end of the outlet copper shaft tube 32, the second end of the first electronic on-off expansion valve 23 is connected with the first end of the battery pack 24, the second end of the battery pack 24 is connected with the first end of the second electronic on-off expansion valve 26, the second end of the second electronic on-off expansion valve 26 is connected with the first end of the fourth on-off stop valve 28 and the first end of the inlet copper shaft tube 31, and the second end of the fourth on-off stop valve 28 is connected with the second end of the first one-way stop valve 29.
Specifically, the operation modes of the heat pump system include: the corresponding working processes of the single-cell heating mode, the simultaneous heating mode of the battery and the passenger cabin, the single-cell refrigerating mode and the dual refrigerating mode of the battery and the passenger cabin are as follows:
the working principle of the single cell heating mode is specifically as follows: the high-temperature and high-pressure gas refrigerant discharged by the electric compressor 1 passes through the first on-off stop valve 2, then exchanges heat with the outlet copper shaft tube 32 through the inlet copper shaft tube 31, the high-superheat gas is changed into low-superheat gas, the low-superheat gas directly enters the battery pack 24 to exchange heat and change into gas-liquid two-phase refrigerant through the second electronic on-off expansion valve 26, the refrigerant is changed into a low-temperature and low-pressure state after throttled and expanded by the first electronic on-off expansion valve 23, and then enters the electric compressor 1 through the third on-off stop valve 19 and the gas-liquid separator 30 after exchanging heat with the outlet copper shaft tube 32 and the waste heat recoverer 14, and the refrigerant starts the next cycle. In the mode, the refrigerant passing through the first electronic on-off expansion valve 23 exchanges heat with the outlet copper shaft tube 32, then exchanges heat with the waste heat recoverer 14 and the environment or the motor 13, and the system heat of the whole system is increased to a certain extent by adding the inlet copper shaft tube 31 and the outlet copper shaft tube 32, so that the low pressure of the system is improved, and conditions are created for heating the compressor through multiple acting in the heating mode.
The working principle of the simultaneous heating mode of the battery and the passenger cabin is as follows: the electric compressor 1 discharges high-temperature high-pressure refrigerant gas, and then enters an air conditioning box module 34 of a passenger cabin in parallel besides a battery side heating loop, then enters a waste heat recovery device 14 to recover heat in a motor 13 and the environment after being throttled and expanded by a first electronic expansion valve 6 and passing through a second break stop valve 15 together with the loop refrigerant of a battery pack 24, and then returns to the electric compressor 1 after passing through a third break stop valve 19 and a gas-liquid separator 30, and starts the next cycle. In this mode, since the added copper shaft tube is laid out at the inlet and outlet of the battery pack 24 without participating in the heat exchange of the passenger compartment circuit, the addition of the inlet copper shaft tube 31 and the outlet copper shaft tube 32 does not affect the heat exchange effect of the passenger compartment.
The working principle of the single cell refrigeration mode is as follows: the electric compressor 1 discharges high-temperature high-pressure refrigerant gas, then passes through the front end module 89, the refrigerant is changed into high-temperature high-pressure liquid, then the refrigerant is changed into a low-temperature low-pressure state with mixed gas and liquid to exchange heat with the battery pack 24 after isenthalpically expanding through the first electronic on-off expansion valve 23, and then enters the electric compressor 1 through the second electronic on-off expansion valve 26, the fourth on-off stop valve 28, the first one-way stop valve 29 and the gas-liquid separator 30 to start the next cycle. In this mode, no refrigerant flows through the inlet copper shaft tube 31 and the outlet copper shaft tube 32, so that the addition of the inlet copper shaft tube 31 and the outlet copper shaft tube 32 has no effect on the cooling and heat exchanging effects of the battery.
The working principle of the battery and passenger cabin double refrigeration mode is as follows: the inlet and outlet copper shaft tubes 31 and 32 have no refrigerant flowing therethrough, so the addition of the inlet and outlet copper shaft tubes 31 and 32 has no effect on the battery and passenger compartment dual cooling effect.
The battery thermal uniformity influences the battery charge and discharge performance, and the service life attenuation of the battery can be rapidly increased under severe conditions, and the uniformity of battery heating and cooling is an important index for measuring the thermal management performance. The total cost of the heat pump system is less influenced by the addition of the inlet copper shaft tube and the outlet copper shaft tube, the overheat degree of the refrigerant at the inlet of the battery can be reduced only under the heating working condition of the battery, the heat management working condition performance of other battery refrigerants and passenger cabins of the heat pump system is not influenced, and the problems that the battery is rapidly aged and the charging and discharging performance is limited due to uneven heating temperature are avoided.
According to the technical scheme provided by the embodiment of the utility model, the inlet copper shaft tube is added to the battery inlet of the battery heating loop, the outlet copper shaft tube is added to the battery outlet of the battery heating loop, so that heat exchange between the battery pack inlet refrigerant and the battery pack outlet refrigerant in the battery heating mode is realized, the superheat degree of the battery pack inlet refrigerant is reduced, the temperature uniformity of the battery pack battery core can be maintained, and the discharge performance and the charge-discharge service life of the battery pack are prolonged. In summary, the utility model realizes the heat exchange of the internal part of the heat pump system by adding the copper shaft tube under the condition of little influence on the cost of the heat pump system, solves the problem of higher superheat degree of the refrigerant at the battery inlet in the battery pack heating mode, reduces the temperature difference between the refrigerant before and after heat exchange with the battery pack, and further solves the problem of larger temperature difference of the battery pack core caused by larger temperature difference between the refrigerant at the inlet and the outlet of the battery pack in the battery heating mode.
Fig. 2 is a schematic structural diagram of still another heat pump system according to an embodiment of the present utility model, referring to fig. 2, optionally, the air conditioning tank module 34 includes an internal condenser 3 and an air conditioning evaporator 4, wherein a first end and a second end of the internal condenser 3 are respectively used as a first input end and a first output end of the air conditioning tank module 34, and a first end and a second end of the air conditioning evaporator 4 are respectively used as a second input end and a second output end of the air conditioning tank module 34.
With continued reference to fig. 2, optionally, the front end module 89 includes a tank radiator 8 and an external condenser 9, the first and second ends of the tank radiator 8 being the first input and first output of the front end module 89, respectively, and the first and second ends of the external condenser 9 being the second input and second output of the front end module 89, respectively.
With continued reference to fig. 2, the heat pump system optionally further includes a second one-way shut-off valve 10, a third one-way shut-off valve 16, a fourth one-way shut-off valve 17, and a fifth one-way shut-off valve 20, the second one-way shut-off valve 10 being connected between the fourth end of the front end module 89 and the fourth end of the air conditioning tank module 34, the third one-way shut-off valve 16 being connected between the outlet copper shaft tube 32 and the second one-way shut-off valve 15, the fourth one-way shut-off valve 17 being connected between the first electronic on-off expansion valve 23 and the waste heat recoverer 14, the fifth one-way shut-off valve 20 being connected between the third end of the air conditioning tank module 34 and the first end of the gas-liquid separator 30.
With continued reference to fig. 2, the heat pump system optionally further includes a fifth on-off stop valve 5 and a sixth on-off stop valve 7, the fifth on-off stop valve 5 being connected between the second end of the air conditioning case module 34 and the third end of the front end module 89, the sixth on-off stop valve 7 being connected between the second end of the fifth on-off stop valve 5 and the third end of the front end module 89.
With continued reference to fig. 2, the heat pump system optionally further includes a second electronic expansion valve 18, the second electronic expansion valve 18 being connected between the fourth end of the air conditioning tank module 34 and the fourth end of the front end module 89.
With continued reference to fig. 2, the heat pump system optionally further includes a first pressure-temperature detecting unit 21 and a second pressure-temperature detecting unit 22, the first pressure-temperature detecting unit 21 is connected between the first electronic on-off expansion valve 23 and the fourth one-way shut-off valve 17, and the second pressure-temperature detecting unit 22 is connected between the first electronic on-off expansion valve 23 and the battery pack 24.
With continued reference to fig. 2, the heat pump system optionally further includes a third pressure temperature detection unit 25 and a fourth pressure temperature detection unit 27, the third pressure temperature detection unit 25 being connected between the battery pack 24 and the second electronic on-off expansion valve 26, the fourth pressure temperature detection unit 27 being connected between the second electronic on-off expansion valve 26 and the fourth on-off valve 28.
With continued reference to fig. 2, the first pressure temperature detection unit 21, the second pressure temperature detection unit 22, the third pressure temperature detection unit 25, and the fourth pressure temperature detection unit 27 are optionally pressure temperature sensors.
With continued reference to fig. 2, the water valve 12 is optionally a three-way water valve.
Fig. 3 is a schematic diagram of operation of a single-cell heating mode according to an embodiment of the present utility model, and referring to fig. 3, the working principle of the single-cell heating mode is specifically: the high-temperature and high-pressure gas refrigerant discharged by the electric compressor 1 passes through the first on-off stop valve 2, then exchanges heat with the outlet copper shaft tube 32 through the inlet copper shaft tube 31, the high-superheat gas is changed into low-superheat gas, the low-superheat gas directly enters the battery pack 24 to exchange heat and change into gas-liquid two-phase refrigerant through the second electronic on-off expansion valve 26, the refrigerant is changed into a low-temperature and low-pressure state after throttled and expanded by the first electronic on-off expansion valve 23, and then enters the electric compressor 1 through the third on-off stop valve 19 and the gas-liquid separator 30 after exchanging heat with the outlet copper shaft tube 32 and the waste heat recoverer 14, and the refrigerant starts the next cycle. In the mode, the refrigerant passing through the first electronic on-off expansion valve 23 exchanges heat with the outlet copper shaft tube 32, then exchanges heat with the waste heat recoverer 14 and the environment or the motor 13, and the system heat of the whole system is increased to a certain extent by adding the inlet copper shaft tube 31 and the outlet copper shaft tube 32, so that the low pressure of the system is improved, and conditions are created for heating the compressor through multiple acting in the heating mode.
Fig. 4 is a schematic diagram of a battery and passenger compartment simultaneous heating mode according to an embodiment of the present utility model, and referring to fig. 4, the working principle of the battery and passenger compartment simultaneous heating mode is specifically as follows: the electric compressor 1 discharges high-temperature high-pressure refrigerant gas, and then enters into the internal condenser 3 of the passenger cabin in parallel besides the battery side heating loop, then enters into the waste heat recovery device 14 to recover heat in the motor 13 and the environment after being throttled and expanded by the first electronic expansion valve 6 and passing through the second break stop valve 15 together with the loop refrigerant of the battery pack 24, and then returns to the electric compressor 1 after passing through the third break stop valve 19 and the gas-liquid separator 30, and starts the next cycle. In this mode, since the added copper shaft tube is laid out at the inlet and outlet of the battery pack 24 without participating in the heat exchange of the passenger compartment circuit, the addition of the inlet copper shaft tube 31 and the outlet copper shaft tube 32 does not affect the heat exchange effect of the passenger compartment.
Fig. 5 is a schematic diagram of operation of a single-battery cooling mode according to an embodiment of the present utility model, and referring to fig. 5, the working principle of the single-battery cooling mode is specifically: the electric compressor 1 discharges high-temperature high-pressure refrigerant gas, the refrigerant is changed into high-temperature high-pressure liquid through the fan and the external condenser 9, the refrigerant is changed into a low-temperature low-pressure state with mixed gas and liquid for heat exchange with the battery pack 24 after isenthalpically expanding through the first electronic on-off expansion valve 23, and then the refrigerant enters the electric compressor 1 through the second electronic on-off expansion valve 26, the fourth on-off stop valve 28, the first one-way stop valve 29 and the gas-liquid separator 30 to start the next cycle. In this mode, no refrigerant flows through the inlet copper shaft tube 31 and the outlet copper shaft tube 32, so that the addition of the inlet copper shaft tube 31 and the outlet copper shaft tube 32 has no effect on the cooling and heat exchanging effects of the battery.
Fig. 6 is a schematic diagram of the operation of a dual battery and passenger compartment cooling mode according to an embodiment of the present utility model, and referring to fig. 6, in this mode, no refrigerant flows through the inlet copper shaft tube 31 and the outlet copper shaft tube 32, so that the addition of the inlet copper shaft tube 31 and the outlet copper shaft tube 32 has no effect on the dual battery and passenger compartment cooling effect.
The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (10)
1. A heat pump system, comprising: the system comprises an electric compressor, a first on-off stop valve, a second on-off stop valve, a third on-off stop valve, a fourth on-off stop valve, an air conditioner box module, a first electronic expansion valve, a front end module, a first one-way stop valve, a battery water pump, a water valve, a motor, a waste heat recoverer, a first electronic on-off expansion valve, a second electronic on-off expansion valve, a battery pack, a gas-liquid separator, an inlet copper shaft tube and an outlet copper shaft tube;
the first end of the gas-liquid separator is connected with the first end of the third on-off stop valve and the first end of the first one-way stop valve, the second end of the third on-off stop valve is connected with the fourth end of the air conditioning box module, the first end of the electric compressor is connected with the second end of the gas-liquid separator, the second end of the electric compressor is connected with the first end of the first on-off stop valve and the first end of the air conditioning box module, the second end of the air conditioning box module is connected with the first end of the first electronic expansion valve, the second end of the first electronic expansion valve is connected with the third end of the front end module, the first end of the second on-off stop valve and the first end of the outlet copper shaft tube, the first end of the water valve is connected with the first end of the front end module, the third end of the water valve is connected with the first end of the motor, the second end of the motor is connected with the second end of the battery water pump and the first end of the front end module, and the first end of the front end of the three-way stop valve is connected with the first end of the front end of the air conditioning box module;
the second end of the second on-off stop valve, the second end of the water valve, the second end of the battery water pump and the second end of the outlet copper shaft tube are respectively connected with the first end, the second end, the third end and the fourth end of the waste heat recoverer, the first end of the first electronic on-off expansion valve is connected with the second end of the outlet copper shaft tube, the second end of the first electronic on-off expansion valve is connected with the first end of the battery pack, the second end of the battery pack is connected with the first end of the second electronic on-off expansion valve, the second end of the second electronic on-off expansion valve is connected with the first end of the fourth on-off stop valve and the first end of the inlet copper shaft tube, the second end of the fourth on-off stop valve is connected with the second end of the first one-way stop valve, and the second end of the inlet copper shaft tube is connected with the second end of the first on-off stop valve.
2. The heat pump system of claim 1, wherein the air conditioning tank module includes an internal condenser and an air conditioning evaporator, the first and second ends of the internal condenser being the first input and the first output of the air conditioning tank module, respectively, and the first and second ends of the air conditioning evaporator being the second input and the second output of the air conditioning tank module, respectively.
3. The heat pump system of claim 1, wherein the front end module includes a tank radiator and an external condenser, the first and second ends of the tank radiator being the first input and first output of the front end module, respectively, and the first and second ends of the external condenser being the second input and second output of the front end module, respectively.
4. The heat pump system of claim 1, further comprising a second one-way shut-off valve connected between the fourth end of the front end module and the fourth end of the air conditioning tank module, a third one-way shut-off valve connected between the outlet copper shaft tube and the second on-off shut-off valve, a fourth one-way shut-off valve connected between the first electronic on-off expansion valve and the waste heat recovery device, and a fifth one-way shut-off valve connected between the third end of the air conditioning tank module and the first end of the gas-liquid separator.
5. The heat pump system of claim 1, further comprising a fifth on-off shut-off valve connected between the second end of the air conditioning case module and the third end of the front end module and a sixth on-off shut-off valve connected between the second end of the fifth on-off shut-off valve and the third end of the front end module.
6. The heat pump system of claim 1, further comprising a second electronic expansion valve connected between the fourth end of the air conditioning tank module and the fourth end of the front end module.
7. The heat pump system of claim 4, further comprising a first pressure temperature detection unit connected between the first electronic on-off expansion valve and the fourth one-way shut-off valve and a second pressure temperature detection unit connected between the first electronic on-off expansion valve and the battery pack.
8. The heat pump system of claim 7, further comprising a third pressure temperature detection unit connected between the battery pack and the second electronic on-off expansion valve and a fourth pressure temperature detection unit connected between the second electronic on-off expansion valve and the fourth on-off shut-off valve.
9. The heat pump system of claim 8, wherein the first pressure temperature detection unit, the second pressure temperature detection unit, the third pressure temperature detection unit, and the fourth pressure temperature detection unit are pressure temperature sensors.
10. The heat pump system of claim 1, wherein the water valve is a three-way water valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322492731.XU CN220700843U (en) | 2023-09-13 | 2023-09-13 | Heat pump system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322492731.XU CN220700843U (en) | 2023-09-13 | 2023-09-13 | Heat pump system |
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| CN220700843U true CN220700843U (en) | 2024-04-02 |
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| CN202322492731.XU Active CN220700843U (en) | 2023-09-13 | 2023-09-13 | Heat pump system |
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| CN (1) | CN220700843U (en) |
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