CN216872096U - Heat pump type battery thermal management system with motor electric control heat dissipation function - Google Patents
Heat pump type battery thermal management system with motor electric control heat dissipation function Download PDFInfo
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- CN216872096U CN216872096U CN202122193301.9U CN202122193301U CN216872096U CN 216872096 U CN216872096 U CN 216872096U CN 202122193301 U CN202122193301 U CN 202122193301U CN 216872096 U CN216872096 U CN 216872096U
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Abstract
The utility model discloses a heat pump type battery heat management system with a motor electric control heat dissipation function in the technical field of battery heat management, which comprises a power battery heat management system, wherein a motor electric control heat dissipation loop and a battery heat management loop are additionally arranged on a connecting pipeline of the power battery heat management system; the independent double-channel water tank heat exchanger comprises the first channel and the second channel, and the method disclosed by the utility model can be used for reducing the cost of the power battery heat management system only by simple operation and prolonging the service life of the system.
Description
Technical Field
The utility model relates to the technical field of battery thermal management, in particular to a heat pump type battery thermal management system with a motor electric control heat dissipation function.
Background
The scheme of the existing motor electric control heat dissipation and power battery heat management system in the industry mainly comprises the following steps: the battery is heated by PTC at low temperature and is refrigerated by a compressor at high temperature; two independent systems are adopted for electric control heat dissipation of the motor and thermal management of the power battery.
However, the conventional thermal management system for the power battery has the problem that the SOC rate of the power battery is reduced rapidly in a low-temperature environment; under the condition that the temperature of the power battery is high, the power battery runs in a limited mode and is in a high-temperature environment for a long time, and the service life of the power battery is shortened;
the cost is high; the high-temperature management of the power battery has a single solution; the low-temperature management of the power battery has a single solution; the low-temperature management of the power battery is realized, and the energy efficiency ratio is low; the power battery thermal management system has a complex system structure; the motor electric control heat dissipation and the battery heat management are two independent systems, so that the cost is high, the comprehensive size is large, and the comprehensive energy consumption is high.
Therefore, the present invention provides a heat pump type battery thermal management system with a motor-controlled heat dissipation function to solve the problems in the background art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a heat pump type battery heat management system with a motor electric control heat dissipation function, so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
the heat pump type battery heat management system with the motor electric control heat dissipation function comprises a power battery heat management system, wherein a motor electric control heat dissipation loop and a battery heat management loop are additionally arranged on a connecting pipeline of the power battery heat management system, the motor electric control heat dissipation loop is connected with the battery heat management loop through an independent double-channel water tank heat exchanger, and a refrigerant loop and a cooling liquid loop are arranged on the connecting pipeline of the battery heat management loop; the independent double-channel water tank heat exchanger comprises a first channel and a second channel.
As a further scheme of the utility model: the power battery heat management system comprises an expansion kettle, a power battery, a first water pump, a first electric water valve, a second electric water valve, a plate heat exchanger, a heat pump type compressor, a four-way reversing valve, an electronic expansion valve, a gas-liquid separator, a heat dissipation fan, an air source heat exchanger and an independent double-channel water tank heat exchanger, wherein the expansion kettle, the power battery, the first water pump, the first electric water valve, the second electric water valve, the plate heat exchanger, the heat pump type compressor, the four-way reversing valve, the electronic expansion valve, the gas-liquid separator, the heat dissipation fan, the air source heat exchanger and the independent double-channel water tank heat exchanger are connected through a connecting pipe, and a pressure sensor, a gas sensor and a liquid humidity sensor are installed on the connecting pipe.
As a still further scheme of the utility model: the automatically controlled heat dissipation return circuit of motor is including independent binary channels water tank heat exchanger, second water pump, motor, machine controller and DCDC, independent binary channels water tank heat exchanger passes through the connecting pipe and is connected with the water pump, motor, machine controller and DCDC are connected, constitute the return circuit with second water pump and independent binary channels water tank heat exchanger.
As a still further scheme of the utility model: the refrigerant loop comprises a plate-type heat exchanger, a heat pump-type compressor, a four-way reversing valve, an electronic expansion valve, a gas-liquid separator and an air source heat exchanger, wherein the plate-type heat exchanger comprises a refrigerant channel and a cooling liquid channel, and the two channels are isolated from each other and exchange heat with each other; the heat pump type compressor compresses an air conditioner refrigerant; the four-way reversing valve can control the flow direction of each channel; the electronic expansion valve has the functions of throttling and reducing pressure; the gas-liquid separator separates liquid at the air inlet of the compressor, so that liquid impact of the compressor is avoided; the air source heat exchanger exchanges heat between the refrigerant and air.
As a still further scheme of the utility model: the cooling liquid loop comprises a first water pump, a second electric water valve, a plate heat exchanger and a power battery, wherein the first water pump: the battery heat management loop water pump is used for providing power for the circulation of the cooling liquid; the power battery is characterized in that: and a water cooling plate is integrated in the battery pack, and the cooling liquid flows through the water cooling plate to cool or heat the battery.
Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
the method adopts the power battery heat management system, and the motor electric control heat dissipation loop and the battery heat management loop are connected in parallel, so that the low-temperature rapid heating, the low-temperature uniform-temperature self-circulation, the spring and autumn environmental air cooling and the high-temperature rapid refrigeration of the power battery in winter are realized, and the motor electric control heat dissipation system is integrated, so that the energy consumption of the system can be reduced, the cost of the power battery heat management system is also reduced, and the service life of the system is prolonged; meanwhile, the electric control heat dissipation loop of the motor and the battery heat management loop share one expansion kettle, one fan and one heat dissipation water tank, so that the system integration level is increased, the system structure is simplified, the system size is smaller, the system energy consumption is reduced, and the system cost is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of a cooling mode of a power battery thermal management heat pump according to the utility model;
FIG. 3 is a schematic diagram of a heating mode of a heat pump for thermal management of a power battery according to the present invention;
FIG. 4 is a schematic view of a heat management environment air cooling mode of a power battery according to the present invention;
FIG. 5 is a schematic diagram of a power battery thermal management self-circulation mode according to the present invention;
fig. 6 is a schematic view of an electric control heat dissipation mode of the motor according to the present invention.
In the figure: the system comprises a 1-expansion kettle, a 2-power battery, a 3-water pump I, a 4-electric water valve I, a 5-electric water valve II, a 6-plate heat exchanger, a 7-heat pump type compressor, an 8-four-way reversing valve, a 9-electronic expansion valve, a 10-gas-liquid separator, a 11-heat dissipation fan, a 12-air source heat exchanger, a 13-independent double-channel water tank heat exchanger, a 131-channel I, a 132-channel II, a 14-water pump II, a 15-motor, a 16-motor controller and a 17-DCDC.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, in the embodiment of the present invention, a heat pump type battery thermal management system with a motor electric control heat dissipation function includes a power battery thermal management system, a motor 15 electric control heat dissipation loop and a battery thermal management loop are additionally disposed on a connection pipeline of the power battery thermal management system, the motor 15 electric control heat dissipation loop is connected with the battery thermal management loop through an independent two-channel water tank heat exchanger 13, and a refrigerant loop and a coolant loop are disposed on the connection pipeline of the battery thermal management loop; the independent two-pass water tank heat exchanger 13 includes a first pass 131 and a second pass 132.
As a further embodiment of the utility model: the power battery heat management system comprises an expansion kettle 1, a power battery 2, a first water pump 3, a first electric water valve 4, a second electric water valve 5, a plate-type heat exchanger 6, a heat pump-type compressor 7, a four-way reversing valve 8, an electronic expansion valve 9, a gas-liquid separator 10, a heat dissipation fan 11, an air source heat exchanger 12 and an independent double-channel water tank heat exchanger 13, wherein the expansion kettle 1, the power battery 2, the first water pump 3, the first electric water valve 4, the second electric water valve 5, the plate-type heat exchanger 6, the heat pump-type compressor 7, the four-way reversing valve 8, the electronic expansion valve 9, the gas-liquid separator 10, the heat dissipation fan 11, the air source heat exchanger 12 and the independent double-channel water tank heat exchanger 13 are connected through a connecting pipe, and a pressure sensor, a gas sensor and a liquid humidity sensor are installed on the connecting pipe.
As still further embodiments of the utility model: the electric control heat dissipation loop of the motor 15 comprises an independent double-channel water tank heat exchanger 13, a second water pump 14, the motor 15, a motor controller 16 and DCDC17, the independent double-channel water tank heat exchanger 13 is connected with the water pump through a connecting pipe, the motor 15, the motor controller 16 and the DCDC17 are connected, and the motor 15, the motor controller 16 and the DCDC17 form a loop together with the second water pump 14 and the independent double-channel water tank heat exchanger 13.
As still further embodiments of the utility model: the refrigerant loop comprises a plate heat exchanger 6, a heat pump type compressor 7, a four-way reversing valve 8, an electronic expansion valve 9, a gas-liquid separator 10 and an air source heat exchanger 12, the plate heat exchanger 6 comprises a refrigerant channel and a cooling liquid channel, and the two channels are isolated from each other and exchange heat with each other; the heat pump type compressor 7 compresses an air conditioning refrigerant; the four-way reversing valve 8 can control the flow direction of each channel; the electronic expansion valve 9 has the functions of throttling and pressure reduction; the gas-liquid separator 10 separates liquid at the air inlet of the compressor, so that liquid impact of the compressor is avoided; the air source heat exchanger 12 exchanges heat between the refrigerant and air.
As still further embodiments of the utility model: the cooling liquid loop comprises a first water pump 3, a second electric water valve 5, a plate heat exchanger 6 and a power battery 2, wherein the first water pump 3: the battery heat management loop water pump is used for providing power for the circulation of the cooling liquid; the power battery 2: and a water cooling plate is integrated in the battery pack, and the cooling liquid flows through the water cooling plate to cool or heat the battery.
The working principle of the utility model is as follows:
as shown in fig. 2, the refrigerant circuit: the heat pump type compressor 7 → the four-way reversing valve 8 → the air source heat exchanger 12 for forced heat exchange of the fan → the electronic expansion valve 9 → the plate type heat exchanger 6 for refrigerant channel → the gas-liquid separator 10 → the compressor, forming an endless circulating refrigerant loop, wherein the cooling medium circulating inside is the refrigerant;
cooling liquid loop: the second water pump 14 → the second electric water valve 5 → the plate heat exchanger 6 coolant channel → the power battery 2 cold plate → the first water pump 3, so as to form an infinite circulation power battery 2 heat dissipation coolant loop, the internal cooling medium is the antifreeze, the expansion water tank 1 provides the water supplementing function for the loop, and in the mode, the first electric water valve 4 is closed, and the second electric water valve 5 is opened.
The refrigeration loop cools and cools the high-temperature antifreeze in the cooling loop of the power battery 2 into low-temperature antifreeze through the plate evaporator, the cooling loop of the power battery 2 conveys the low-temperature antifreeze to the power battery 2 bag, and the power battery 2 is cooled through the cold plate of the power battery 2. When the two loops are started in the heat pump refrigeration mode, the two loops supplement each other to convey the refrigeration demand energy to the battery pack continuously.
As shown in fig. 3, the refrigerant circuit: the heat pump type compressor 7 → the four-way reversing valve 8 → the air source heat exchanger 12 for forced heat exchange of the fan → the electronic expansion valve 9 → the plate type heat exchanger 6 → the gas-liquid separator 10 → the compressor, and an infinite circulating refrigerant loop is formed, and the cooling medium circulating inside is the refrigerant;
cooling liquid loop: the first water pump 3 → the second electric water valve 5 → the plate heat exchanger 6 coolant channel → the power battery 2 water cooling plate → the first water pump 3, so as to form an infinite circulation power battery 2 heat dissipation coolant loop, the internal cooling medium is the antifreeze, the expansion water tank 1 provides the water supplementing function for the loop, and in the mode, the first electric water valve 4 is closed, and the second electric water valve 5 is opened.
The refrigeration loop cools and heats the low-temperature antifreeze in the cooling loop of the power battery 2 into high-temperature antifreeze through the plate heat exchanger 6, the cooling loop of the power battery 2 conveys the high-temperature antifreeze to the power battery 2 bag, and the temperature of the power battery 2 is raised through the cold plate of the power battery 2. When the heat pump heating mode is started, the two loops supplement each other to convey the continuously heating required energy to the battery pack.
As shown in fig. 4, the first water pump 3 → the first electric water valve 4 → the first channel 131 of the independent two-channel water tank heat exchanger 13 for forced heat exchange by the fan → the power battery 2 for water cooling plate → the first water pump 3, so as to form an infinite circulation loop of the power battery 2 for heat dissipation and cooling liquid, wherein the internal cooling medium is the antifreeze, and the expansion water tank 1 provides a water replenishing function for the loop. When the environment air cooling mode is started, the electric water valve I4 is opened, the electric water valve II 5 is closed, the refrigerant loop does not work, the fan is opened, and the anti-freezing solution is cooled through the heat dissipation water tank and the fan, so that the effect of the power battery 2 is achieved.
As shown in fig. 5, the first water pump 3 → the first electric water valve 4 → the first channel 131 of the independent two-channel water tank heat exchanger 13 → the water cooling plate of the power battery 2 → the first water pump 3 form an infinite circulation loop of the heat dissipation coolant of the power battery 2, the internal cooling medium is the antifreeze solution, and the expansion water tank 1 provides a water supplementing function for the loop. When the self-circulation mode is started, the electric water valve I4 and the electric water valve II 5 are simultaneously started, the refrigerant loop does not work, the fan does not need to be started, the water pump is used as an output power source, and the cooling liquid wrapped by the power battery 2 continuously dissipates heat for the power battery 2 through the self-circulation cooling loop so as to achieve the temperature equalization effect.
As shown in fig. 6, the second water pump 14 → the second channel 132 fan of the independent two-channel water tank heat exchanger 13 for forced heat exchange → the motor 15 → the motor controller 16 → DCDC17 → the second water pump 14, so as to form an endless loop of the power battery 2 for heat dissipation and cooling liquid, the internal cooling medium is the antifreeze, and the expansion water tank 1 provides a water replenishing function for the loop. In the mode, the fan is started, and the antifreeze is cooled through the heat dissipation water tank and the fan, so that the effect of the power battery 2 is achieved; the mode is independent of each working mode of battery thermal management.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (4)
1. Heat pump type battery thermal management system with automatically controlled heat dissipation function of motor, including power battery thermal management system, its characterized in that: a motor (15) electric control heat dissipation loop and a battery heat management loop are additionally arranged on the power battery heat management system connecting pipeline, the motor (15) electric control heat dissipation loop is connected with the battery heat management loop through an independent double-channel water tank heat exchanger (13), and a refrigerant loop and a cooling liquid loop are arranged on the battery heat management loop connecting pipeline; the independent double-channel water tank heat exchanger (13) comprises a first channel (131) and a second channel (132); the power battery heat management system comprises an expansion kettle (1), a power battery (2), a water pump I (3), an electric water valve I (4), an electric water valve II (5), a plate type heat exchanger (6), a heat pump type compressor (7), a four-way reversing valve (8), an electronic expansion valve (9), a gas-liquid separator (10), a heat dissipation fan (11), an air source heat exchanger (12) and an independent double-channel water tank heat exchanger (13), wherein the expansion kettle (1), the power battery (2), the water pump I (3), the electric water valve I (4), the electric water valve II (5), the plate type heat exchanger (6), the heat pump type compressor (7), the four-way reversing valve (8), the electronic expansion valve (9), the gas-liquid separator (10), the heat dissipation fan (11), the air source heat exchanger (12) and the independent double-channel water tank heat exchanger (13) are connected through connecting pipes, and the connecting pipe is provided with a pressure sensor, a gas sensor and a liquid humidity sensor.
2. A heat pump battery thermal management system with electromechanical heat dissipation as recited in claim 1, wherein: motor (15) automatically controlled heat dissipation return circuit is including independent binary channels water tank heat exchanger (13), two (14) of water pump, motor (15), motor controller (16) and DCDC (17), independent binary channels water tank heat exchanger (13) are connected with the water pump through the connecting pipe, motor (15), motor controller (16) and DCDC (17) are connected, constitute the return circuit with two (14) of water pump and independent binary channels water tank heat exchanger (13).
3. A heat pump battery thermal management system with electromechanical heat dissipation as recited in claim 1, wherein: the refrigerant loop comprises a plate type heat exchanger (6), a heat pump type compressor (7), a four-way reversing valve (8), an electronic expansion valve (9), a gas-liquid separator (10) and an air source heat exchanger (12), the plate type heat exchanger (6) comprises a refrigerant channel and a cooling liquid channel, and substances of the two channels are isolated from each other and exchange heat with each other; the heat pump type compressor (7) compresses an air conditioning refrigerant; the four-way reversing valve (8) can control the flow direction of each channel; the electronic expansion valve (9) has the functions of throttling and pressure reduction; the gas-liquid separator (10) separates liquid at the air inlet of the compressor, so that liquid impact of the compressor is avoided; the air source heat exchanger (12) exchanges heat between the refrigerant and air.
4. A heat pump battery thermal management system with electromechanical heat dissipation as recited in claim 1, wherein: the cooling liquid loop comprises a first water pump (3), a second electric water valve (5), a plate heat exchanger (6) and a power battery (2), wherein the first water pump (3): the battery heat management loop water pump is used for providing power for the circulation of the cooling liquid; the power battery (2): and a water cooling plate is integrated in the battery pack, and the cooling liquid flows through the water cooling plate to cool or heat the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122193301.9U CN216872096U (en) | 2021-09-10 | 2021-09-10 | Heat pump type battery thermal management system with motor electric control heat dissipation function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122193301.9U CN216872096U (en) | 2021-09-10 | 2021-09-10 | Heat pump type battery thermal management system with motor electric control heat dissipation function |
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| CN216872096U true CN216872096U (en) | 2022-07-01 |
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| CN202122193301.9U Active CN216872096U (en) | 2021-09-10 | 2021-09-10 | Heat pump type battery thermal management system with motor electric control heat dissipation function |
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- 2021-09-10 CN CN202122193301.9U patent/CN216872096U/en active Active
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