CN211416890U - Heat pump air conditioner and battery heat management device - Google Patents
Heat pump air conditioner and battery heat management device Download PDFInfo
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- CN211416890U CN211416890U CN202020015053.1U CN202020015053U CN211416890U CN 211416890 U CN211416890 U CN 211416890U CN 202020015053 U CN202020015053 U CN 202020015053U CN 211416890 U CN211416890 U CN 211416890U
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Abstract
The utility model relates to a heat pump air conditioner and battery heat management device, including air conditioning system and battery heat management system, air conditioning system includes air-conditioning cabinet, outer heat exchanger, vapour and liquid separator, compressor, is equipped with condenser, evaporimeter, air-blower, first high-pressure PTC in the air-conditioning cabinet, is equipped with heating throttle nozzle stub between outer heat exchanger and the condenser, and the heating throttle nozzle stub is connected in parallel and is equipped with the second solenoid valve, is equipped with first solenoid valve and refrigeration throttle nozzle stub between outer heat exchanger and the evaporimeter in proper order; the evaporator is communicated with the condenser through a gas-liquid separator and a compressor in sequence; a third electromagnetic valve is arranged between the gas-liquid separator and the outer heat exchanger; the battery thermal management system sequentially comprises a battery cooler, a second high-voltage PTC, a battery pack and a water pump, wherein the battery cooler is connected with a third electromagnetic valve in parallel; the utility model discloses can carry out the heat management to battery, motor and passenger cabin alone for each other does not influence between each return circuit when carrying out multinomial heat management, the heat management efficiency is high.
Description
Technical Field
The utility model belongs to the electric automobile field especially relates to electric automobile heat pump air conditioner and battery heat management field.
Background
In recent years, energy conservation and environmental protection are advocated in all countries in the world, along with the annual increase of automobile sales in China, the carbon emission of automobiles is higher and higher, the research center of gravity of the automobile industry gradually turns to the low-carbon field, compared with the traditional automobile taking gasoline as power, electric automobiles show outstanding advantages in the aspects of environmental protection, energy conservation and the like, along with the continuous development of the whole automobile technology and the key part technology of the electric automobiles, the electromotion of the automobiles becomes the development trend of the global automobile industry, the automobiles mainly driven by electric energy, such as pure electric automobiles, become the main development trend of China, the pure electric automobiles mainly adopting electric energy to drive, are rapidly developed as pure electric automobiles for relieving energy consumption and advocating green travel, and electric heat pump air conditioners are basically in standard configuration on the pure electric automobiles; compared with the traditional fuel oil automobile air conditioning system, the air conditioning system of the pure electric automobile is the biggest difference that the power source is the power source power of the battery pack, and because no engine waste heat can be utilized, the pure electric automobile must be heated by a heat pump air conditioner or heated by PTC auxiliary electric heating in winter, especially in severe cold areas, the heating effect of the electric heat pump air conditioner is poor, so that the energy consumption of the battery pack is large, the endurance capacity of the pure electric automobile is weak, and the driving range is reduced by 30-50% due to the fact that the pure electric automobile is cooled by using battery electric power and heated by electric heating, so that the pure electric automobile air conditioning system becomes an auxiliary system with higher energy consumption in the electric automobile; for the battery pack of the electric automobile, when the outdoor environment temperature is high, the heat generated by the battery pack is easy to accumulate so that the battery temperature is rapidly increased; when the outdoor environment temperature is lower than 0 ℃, the internal resistance of the battery pack is sharply increased, the overall performance is poor, and when the temperature of the battery pack reaches the performance requirement, the battery pack generates additional heat and needs to be discharged.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a simplified structure device for a hybrid heat pump air conditioner and battery heat management to solve the above problems.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a heat pump air conditioner and battery heat management device comprises an air conditioning system and a battery heat management system, wherein the air conditioning system comprises an air conditioning box, an outer heat exchanger, a gas-liquid separator and a compressor, the outer heat exchanger, the gas-liquid separator and the compressor are arranged outside the air conditioning box, a condenser, an evaporator, an air blower and a first high-pressure Positive Temperature Coefficient (PTC) are arranged in the air conditioning box, a heating throttling short pipe is arranged between the outer heat exchanger and the condenser, a second electromagnetic valve is arranged on the heating throttling short pipe in parallel, and a first electromagnetic valve and a refrigerating throttling short pipe are sequentially arranged between the outer heat exchanger and; the evaporator is communicated with the condenser through a gas-liquid separator and a compressor in sequence; a third electromagnetic valve is arranged between the gas-liquid separator and the outer heat exchanger; the battery thermal management system sequentially comprises a battery cooler, a second high-voltage PTC, a battery pack and a water pump, wherein the battery cooler is connected with a third electromagnetic valve in parallel.
As a further optimization scheme of the utility model, the shell of the air conditioning box is also provided with an air inlet and an air outlet, the blower is fixedly arranged at one side close to the air inlet, the condenser is arranged at one side of the air outlet, and the evaporator is arranged between the blower and the condenser; the first high-pressure PTC is arranged on one side, close to the air outlet, of the condenser.
As the utility model discloses a further optimization scheme, be equipped with the surge tank between water pump and the battery package.
As a further optimization scheme of the utility model, first solenoid valve and second solenoid valve are normal open type solenoid valve, the third solenoid valve is normal close type solenoid valve.
As a further optimization scheme of the utility model, the inner capillary of the heating throttling short pipe is 0.8-1.0 mm in inner diameter and 30-40 mm in length; the inner capillary of the refrigeration throttling short pipe is 1.2-1.7 mm in inner diameter and 30-40 mm in length.
The beneficial effects of the utility model reside in that:
1) the automobile air conditioner does not directly use the refrigerant of the air conditioning system to exchange heat with the working medium of the heat management system, so the original capacity of the air conditioning system cannot be reduced, and the pipeline of the air conditioning system does not need to be led to the heat management system, thereby simplifying the structures of the air conditioning system and the heat management system, reducing the cost and improving the reliability;
2) the heat pump air conditioning system and the battery heat management system of the utility model share one set of condenser and evaporator, thus simplifying the components of the vehicle heat management system and reducing the production cost;
3) the heat pump air conditioning system and the battery heat management system are independent from each other, and can be used for independently performing heat management on the battery, the motor and the passenger compartment, so that loops are not influenced mutually when multiple heat management is performed, and the heat management efficiency is high; the heat pump air conditioning system and the battery heat management loop establish a heat exchange relationship only through the battery cooler, and the structure is simple.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the cooling mode of the present invention;
FIG. 3 is a schematic view of a heating mode of the present invention;
fig. 4 is a schematic diagram of the heating + battery cooling mode of the present invention;
FIG. 5 is a schematic view of the cooling and dehumidifying mode of the present invention;
FIG. 6 is a schematic view of a heating and dehumidifying mode of the present invention;
in the figure: 1. an air conditioning cabinet; 11. a condenser; 12. an evaporator; 13. a blower; 14. a first high-voltage PTC; 15. an air inlet; 16. an air outlet; 2. an external heat exchanger; 3. a gas-liquid separator; 4. a compressor; 51. a heating throttling short pipe; 52. a short refrigeration throttling pipe; 61. a first solenoid valve; 62. a second solenoid valve; 63. a third electromagnetic valve; 71. a battery cooler; 72. a second high-voltage PTC; 73. a battery pack; 74. a water pump; 75. and (4) balancing tanks.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
The heat pump air conditioner and battery thermal management device shown in fig. 1 to 6 comprises an air conditioning system and a battery thermal management system, wherein the air conditioning system comprises an air conditioning box 1, an outer heat exchanger 2 arranged outside the air conditioning box 1, a gas-liquid separator 3 and a compressor 4, and a condenser 11, an evaporator 12, a blower 13 and a first high-pressure PTC14 are arranged in the air conditioning box 1;
a heating throttling short pipe 51 is arranged between the outer heat exchanger 2 and the condenser 11, and an inner capillary of the heating throttling short pipe 51 is 0.8-1.0 mm in inner diameter and 30-40 mm in length; the basic principle of the throttling short pipe is that high-pressure liquid refrigerant is forced to flow through a small overflowing cross section to generate proper local resistance loss or on-way loss, so that the pressure of the refrigerant is suddenly reduced, and meanwhile, a part of liquid refrigerant is vaporized to absorb latent heat, so that the throttled refrigerant becomes a low-pressure and low-temperature state;
a second electromagnetic valve 62 is arranged on the heating throttling short pipe 51 in parallel, and the second electromagnetic valve 62 is a normally open electromagnetic valve;
a first electromagnetic valve 61 and a refrigeration throttling short pipe 52 are sequentially arranged between the outer heat exchanger 2 and the evaporator 12, an inner capillary of the refrigeration throttling short pipe 52 is 1.2-1.7 mm in inner diameter and 30-40 mm in length, and the first electromagnetic valve 61 is a normally open electromagnetic valve;
the evaporator 12 is communicated with the condenser 11 through the gas-liquid separator 3 and the compressor 4 in sequence; a third electromagnetic valve 63 is arranged between the gas-liquid separator 3 and the outer heat exchanger 2, wherein the third electromagnetic valve 63 is a normally closed electromagnetic valve;
the shell of the air-conditioning box 1 is also provided with an air inlet 15 and an air outlet 16, the air blower 13 is fixedly arranged at one side close to the air inlet 15, the condenser 11 is arranged at one side of the air outlet 16, and the evaporator 12 is arranged between the air blower 13 and the condenser 11; the first high-pressure PTC14 is arranged on one side of the condenser 11 close to the air outlet 16;
the battery thermal management system sequentially comprises a battery cooler 71, a second high-voltage PTC72, a battery pack 73 and a water pump 74, wherein the battery cooler 71 is connected with a third electromagnetic valve 63 in parallel,
in order to prevent the loss of the cooling liquid caused by volatilization and the like in the recycling process of the engine cooling liquid, a balance tank 75 is arranged between the water pump 74 and the battery pack 73; the balancing tank 75 plays a role in regulating the system, and when the temperature rises, part of the cooling liquid steam enters the balancing tank to be stored along with the increase of the volume of the cooling liquid; when the temperature is reduced and the volume of the cooling liquid is reduced, the cooling liquid in the balance tank can be replenished into the cooling system, so that the cooling liquid can better play the role;
the heat pump air conditioner and battery heat management device can realize modes such as refrigeration, heating, dehumidification and the like;
firstly, in a refrigeration mode, as shown in fig. 2, a compressor is started to compress a refrigerant into high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters a condenser and the condenser to be cooled into high-temperature and high-pressure liquid, then the liquid flows through a normally-open second electromagnetic valve and an external heat exchanger and is divided into two branches, the first branch passes through a normally-open first electromagnetic valve and enters an evaporator through throttling of a refrigeration throttling short pipe, the evaporator absorbs heat to cool air, a blower blows cold air into a passenger cabin, the refrigerant evaporates at the same time, the refrigerant after heat absorption and evaporation enters a gas-liquid separator, the refrigerant after gas-liquid separation is carried out through the gas-liquid separator, and finally returns to the compressor, so that a refrigeration cycle is formed, and the effect of blowing cold air to the;
the second branch flows through the battery cooler after flowing through the external heat exchanger and then is communicated with the gas-liquid separator; the battery cooler is also provided with an electronic expansion valve, when the refrigerant passes through the battery cooler, the battery cooler can introduce the refrigerant in the air-conditioning system, the refrigerant is evaporated after the expansion valve is throttled, and the heat of the cooling liquid in the battery cooling loop is absorbed, and the refrigerant takes away the heat of the cooling liquid in the battery thermal management system through heat exchange in the process, so that the effect of cooling the battery is achieved;
in the heating mode, as shown in fig. 3, the second electromagnetic valve and the first electromagnetic valve are closed, the third electromagnetic valve is opened, and the high-pressure PTC is opened, at the same time, the refrigerant passes through the condenser, the heating throttling short pipe, the outer heat exchanger, the third electromagnetic valve and the gas-liquid separator in sequence by the compressor, and finally returns to the compressor to form a heating cycle, so that heating of the passenger compartment can be realized;
in the heating and battery cooling mode, as shown in fig. 4, the second electromagnetic valve, the first electromagnetic valve and the third electromagnetic valve are all in a closed state, and the high-pressure PTC is simultaneously opened, at this time, the refrigerant passes through the condenser, the heating throttling short pipe, the external heat exchanger, the battery cooler and the gas-liquid separator in sequence by the compressor, and finally returns to the compressor to form a heating cycle, so that the effects of heating the passenger compartment and cooling the battery can be simultaneously realized;
in the dehumidification mode, as shown in fig. 5, the second electromagnetic valve and the first electromagnetic valve are kept in an open state, the third electromagnetic valve is closed, the high-pressure PTC is opened, and the compressor passes the refrigerant through the condenser, the second electromagnetic valve, the outer heat exchanger, the first electromagnetic valve, the evaporator and the gas-liquid separator in sequence and finally returns to the compressor; this results in dehumidification in a cooling mode;
according to the above cycle, as shown in fig. 6, the second electromagnetic valve is closed, the refrigerant passes through the heating throttling short pipe after coming out of the condenser and then enters the outer heat exchanger, other lines are consistent with the above, and the cycle realizes dehumidification in the heating mode;
in addition, the battery heat management system also has a battery preheating function, when the temperature of the battery pack is too low and effective charging and discharging cannot be carried out, the water pump and the high-voltage PTC are started to preheat the battery pack, and when the temperature of the battery pack rises to the allowable charging temperature, the water pump and the high-voltage PTC are closed.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (5)
1. The utility model provides a heat pump air conditioner and battery thermal management device, includes air conditioning system and battery thermal management system, air conditioning system includes air conditioning cabinet (1), locates outer heat exchanger (2), vapour and liquid separator (3), compressor (4) outside air conditioning cabinet (1), be equipped with condenser (11), evaporimeter (12), air-blower (13), first high pressure PTC (14) in air conditioning cabinet (1), its characterized in that: a heating throttling short pipe (51) is arranged between the outer heat exchanger (2) and the condenser (11), a second electromagnetic valve (62) is arranged on the heating throttling short pipe (51) in parallel, and a first electromagnetic valve (61) and a refrigerating throttling short pipe (52) are sequentially arranged between the outer heat exchanger (2) and the evaporator (12); the evaporator (12) is communicated with the condenser (11) through a gas-liquid separator (3) and a compressor (4) in sequence; a third electromagnetic valve (63) is arranged between the gas-liquid separator (3) and the outer heat exchanger (2); the battery thermal management system sequentially comprises a battery cooler (71), a second high-voltage PTC (72), a battery pack (73) and a water pump (74), wherein the battery cooler (71) is connected with a third electromagnetic valve (63) in parallel.
2. A heat pump air conditioning and battery thermal management apparatus according to claim 1, wherein: an air inlet (15) and an air outlet (16) are further formed in the shell of the air conditioning box (1), the air blower (13) is fixedly arranged on one side close to the air inlet (15), the condenser (11) is arranged on one side of the air outlet (16), and the evaporator (12) is arranged between the air blower (13) and the condenser (11); the first high-pressure PTC (14) is arranged on one side, close to the air outlet (16), of the condenser (11).
3. A heat pump air conditioning and battery thermal management apparatus according to claim 1, wherein: and a balance tank (75) is arranged between the water pump (74) and the battery pack (73).
4. A heat pump air conditioning and battery thermal management apparatus according to claim 1, wherein: the first electromagnetic valve (61) and the second electromagnetic valve (62) are both normally open type electromagnetic valves, and the third electromagnetic valve (63) is a normally closed type electromagnetic valve.
5. A heat pump air conditioning and battery thermal management apparatus according to claim 1, wherein: the inner capillary of the heating throttling short pipe (51) is 0.8-1.0 mm in inner diameter and 30-40 mm in length; the inner capillary of the refrigeration throttling short pipe (52) is 1.2-1.7 mm in inner diameter and 30-40 mm in length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020015053.1U CN211416890U (en) | 2020-01-06 | 2020-01-06 | Heat pump air conditioner and battery heat management device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020015053.1U CN211416890U (en) | 2020-01-06 | 2020-01-06 | Heat pump air conditioner and battery heat management device |
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| CN211416890U true CN211416890U (en) | 2020-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113183717A (en) * | 2021-06-11 | 2021-07-30 | 吉利汽车研究院（宁波）有限公司 | Air conditioning system host, control method and air conditioning system |
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- 2020-01-06 CN CN202020015053.1U patent/CN211416890U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113183717A (en) * | 2021-06-11 | 2021-07-30 | 吉利汽车研究院（宁波）有限公司 | Air conditioning system host, control method and air conditioning system |
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