CN219076949U - Range-extending type electric automobile thermal management system - Google Patents
Range-extending type electric automobile thermal management system Download PDFInfo
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- CN219076949U CN219076949U CN202223528354.2U CN202223528354U CN219076949U CN 219076949 U CN219076949 U CN 219076949U CN 202223528354 U CN202223528354 U CN 202223528354U CN 219076949 U CN219076949 U CN 219076949U
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Abstract
The utility model discloses a range-extending type electric automobile thermal management system, which is mainly designed in that the range-extending type electric automobile thermal management system consists of a cooling liquid loop and a refrigerant loop which are mutually connected through pipelines and provided with different cooling media; the cooling liquid loop is divided into a battery cooling loop, a motor and generator cooling loop and a range-extending engine cooling loop, the refrigerant loop comprises a compressor, a first condenser, an evaporator, an electronic expansion valve, an electromagnetic valve and a cooler which are connected through pipelines, the refrigerant loop and the battery cooling loop share the cooler, and the refrigerating capacity of a cab and a battery pack is proportioned through opening and closing of the electromagnetic valve and opening control of the electronic expansion valve in the refrigerant loop. The utility model uses the waste heat recovery of the range-extended engine for producing the battery and the cab, and can not bring the impurities of the generator cooling loop into the battery cooling loop, and simultaneously realizes the energy consumption saving under each working condition by adjusting the components in the loop under each working condition.
Description
Technical Field
The utility model relates to the technical field of extended-range electric vehicles, in particular to an extended-range electric vehicle thermal management system.
Background
The existing heat management cooling scheme of the range-extended electric commercial vehicle has low integration level, redundancy of equipment, and heating of a battery and heating of a cab are both dependent on PTC (automobile heater to convert electric energy into heat energy) for heating, waste of waste heat of a range-extended engine, or direct communication of a range-extended engine cooling liquid loop with the battery cooling liquid loop for heating.
In the prior art, only one low-temperature radiator is usually arranged for radiating the driving motor, the generator and various electric control units, the high-temperature radiator is used for radiating the range-extended engine, and the PTC is used for heating the battery pack, or the battery loop and the range-extended engine cooling loop are connected in series to realize the recovery of the waste heat of the range-extended engine.
The components of the extended range electric vehicle, which need to be cooled, are much more than pure electric energy sources and traditional vehicles, including heat dissipation of a motor, a generator, an electric control and the like, so that a scheme of a low-temperature radiator is adopted, the scheme generally needs larger specification and size, and a common vehicle frame is generally difficult to arrange. In addition, various working conditions exist in practical application, for example, when the electric quantity is sufficient, a range extender is not required to work, and redundancy of heat dissipation capability and energy consumption waste can occur only for electric control heat dissipation of the motor and the motor; when the battery needs to be heated, the PTC is used for heating the battery, so that heat emitted by the range-extending engine is wasted, and the PTC wastes energy; the extended-range engine loop and the battery cooling loop are connected in series, impurities in the extended-range engine are inevitably brought into the battery cooling loop, the battery cooling loop is easy to be blocked, and the battery is seriously damaged by short circuit, failure and fire.
Disclosure of Invention
In view of the above, the present utility model is directed to a thermal management system for an extended-range electric vehicle, so as to solve the problems of the existing cooling and heating systems for extended-range electric vehicles.
The technical scheme adopted by the utility model is as follows:
the utility model provides a range-extending type electric automobile thermal management system, which comprises: a coolant loop and a refrigerant loop which are connected with each other through pipelines and are provided with different cooling media; the cooling liquid loop consists of a battery cooling loop, a motor and generator cooling loop and a range-extending engine cooling loop;
the refrigerant loop comprises a compressor, a first condenser, an evaporator, an electronic expansion valve, an electromagnetic valve and a cooler which are connected through pipelines, wherein the refrigerant loop and the battery cooling loop share the cooler, and the cooler is used for conveying heat in the battery cooling loop into the refrigerant loop;
and the refrigerating capacity of the cab and the battery pack is proportioned by opening and closing the electromagnetic valve and opening the electronic expansion valve in the refrigerant loop.
In at least one possible implementation manner, the battery cooling circuit comprises a fourth water pump, the cooler, a second electronic three-way valve, a water-water heat exchanger and a battery pack which are connected through pipelines;
the cooler is used for transferring heat generated by the battery pack to the refrigerant loop;
the water-water heat exchanger is used for transferring heat in the extended-range engine cooling circuit to the battery cooling circuit;
and disconnecting the battery cooling loop from the water-water heat exchanger through a second electronic three-way valve for battery self-circulation.
In at least one possible implementation manner, the extended-range engine cooling loop comprises the water-water heat exchanger, a warm air core, a third water pump, a PTC, a first electronic three-way valve, a high-temperature radiator, an extended-range engine and a first fan arranged at the high-temperature radiator, which are connected through pipelines;
the water-water heat exchanger is used for transferring heat generated by the range-extending engine to the battery cooling loop;
the warm air core body is used for transmitting heat generated by the range-extending engine to the cab;
the high-temperature radiator and the first fan are used for cooling the range-extended engine;
in the non-working state of the range-extending engine, heat is generated by the PTC, and an internal small cycle of the range-extending engine is formed through a passage formed by the first electronic three-way valve, the water-water heat exchanger, the warm air core body and the third water pump.
In at least one possible implementation, the extended range engine cooling circuit further includes a second water tank connected between the high temperature radiator and the extended range engine by a pipe, the second water tank being for deaerating and containing the expanded cooling liquid.
In at least one possible implementation manner, the motor and generator cooling loop comprises a first water pump, a second water pump, an all-in-one controller, a first motor, a second motor, a generator electric controller, a generator, a first low-temperature radiator, a second low-temperature radiator, the high-temperature radiator, a four-way joint and a second fan arranged at the second low-temperature radiator, which are connected through pipelines;
the cooling liquid flows through the first water pump, the all-in-one controller, the first motor, the second low-temperature radiator, the first low-temperature radiator and the four-way joint to radiate heat of the first motor, the second motor and the all-in-one controller;
the cooling liquid flows through the second water pump, the electric generator controller, the generator, the first low-temperature radiator and the four-way joint to radiate the electric generator controller and the generator.
In at least one possible implementation, the motor and generator cooling circuit further comprises a first water tank connected to the four-way joint by a pipe, the first water tank being used for deaeration and containing the expanded cooling liquid.
In at least one possible implementation, a second condenser is provided at the second low-temperature radiator.
In at least one possible implementation, the second low temperature radiator, the second condenser, and the second fan are integrally configured.
In at least one possible implementation thereof, the thermal management system further comprises: and the intercooler is used for cooling the air inlet of the range-extending engine.
In at least one possible implementation manner, the first low-temperature radiator, the high-temperature radiator, the intercooler and the first fan are integrally configured.
The main design concept of the utility model is that the utility model consists of a cooling liquid loop and a cooling medium loop which are mutually connected through pipelines and provided with different cooling mediums; the cooling liquid loop is divided into a battery cooling loop, a motor and generator cooling loop and a range-extending engine cooling loop, the refrigerant loop comprises a compressor, a first condenser, an evaporator, an electronic expansion valve, an electromagnetic valve and a cooler which are connected through pipelines, the refrigerant loop and the battery cooling loop share the cooler, and the refrigerating capacity of a cab and a battery pack is proportioned through opening and closing of the electromagnetic valve and opening control of the electronic expansion valve in the refrigerant loop. The utility model uses the waste heat recovery of the range-extended engine for producing the battery and the cab, and can not bring the impurities of the generator cooling loop into the battery cooling loop, and simultaneously realizes the energy consumption saving under each working condition by adjusting the components in the loop under each working condition.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of a thermal management system of an extended-range electric vehicle according to an embodiment of the present utility model.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
The present utility model provides an embodiment of a thermal management system for an extended-range electric vehicle, specifically, as shown in fig. 1, including: the cooling device comprises a cooling liquid loop and a refrigerant loop which are mutually connected through pipelines and provided with different cooling media, wherein the cooling liquid loop is composed of a battery cooling loop, a motor and generator cooling loop and a range-extending engine cooling loop;
the refrigerant loop and the battery cooling loop share a cooler (Chlle r) which is used for conveying heat in the battery cooling loop into the refrigerant loop;
the refrigerant loop comprises a compressor, a first condenser, an evaporator, an electronic expansion valve, an electromagnetic valve and a cooler which are connected through pipelines, wherein the cooler radiates heat in the loop to the outside through the first condenser. In specific operation, the refrigerating capacity proportioning of the cab and the battery can be realized by controlling the opening and closing of the electromagnetic valve and the opening of the electronic expansion valve in the refrigerant loop.
Further, the battery cooling loop comprises a fourth water pump, a cooler, a second electronic three-way valve, a water-water heat exchanger and a battery pack which are connected through pipelines; the cooler is used for transferring heat generated by the battery pack into the refrigerant loop (refrigeration cycle of the battery pack); the water-water heat exchanger is used for transferring heat in the range-extending engine cooling loop to the battery cooling loop, so that the effect of recovering waste heat of the range-extending engine and heating the battery (heating cycle of the battery pack) is achieved. Meanwhile, the second electronic three-way valve can be controlled to disconnect the battery cooling loop from the water-water heat exchanger for battery self-circulation, so that the working condition that the range-extended engine works and the battery does not need to be heated can be met, the PTC of the battery cooling loop is reduced, the cost is saved, and the battery cooling loop is prevented from being connected in series with the range-extended engine cooling loop while waste heat recovery is realized.
Further, the range-extended engine cooling loop comprises a water-water heat exchanger, a warm air core, a third water pump, a PTC, a first electronic three-way valve, a high-temperature radiator, a range-extended engine and a first fan arranged at the high-temperature radiator, which are connected through pipelines. The water-water heat exchanger is used for transferring heat generated by the range-extending engine to the battery cooling loop; the warm air core body is used for transmitting heat generated by the range-extending engine to the cab; the high-temperature radiator and the first fan are used for cooling the range-extending engine. Therefore, when the range-extending engine works, the waste heat of the range-extending engine can be utilized to heat the cab and the battery pack; when the range-extending engine does not work, heat can be continuously generated through the PTC, and internal small circulation of the range-extending engine is realized through a passage formed by the first electronic three-way valve, the water-water heat exchanger, the warm air core body and the third water pump, so that heating of a cab and heating of a battery pack when the range-extending engine does not work are realized.
Based on this, the range-extending engine cooling circuit further comprises a second water kettle (shown in phantom as an exhaust passage of the high temperature radiator through the water kettle) connected between the high temperature radiator and the range-extending engine by a pipe, the second water kettle being used for deaerating and containing the expanded cooling liquid.
Further, the motor and generator cooling loop comprises a first water pump, a second water pump, an all-in-one controller, a first motor, a second motor, a generator electric controller, a generator, a first low-temperature radiator, a second low-temperature radiator, a high-temperature radiator, a four-way joint and a second fan arranged at the second low-temperature radiator, which are connected through pipelines; the cooling liquid flows through the first water pump, the all-in-one controller, the first motor, the second low-temperature radiator, the first low-temperature radiator and the four-way joint, so that heat dissipation of the two motors and the all-in-one controller is realized; the cooling liquid flows through the second water pump, the electric generator controller, the generator, the first low-temperature radiator and the four-way joint, so that heat dissipation of the electric generator controller and the generator is realized.
Based on this, the motor and generator cooling circuit further comprises a first kettle connected to the four-way junction by a pipe, the first kettle being used for degassing and containing the expanded cooling liquid (two cryo-radiators are shown in dashed lines through the exhaust passage of the kettle).
In addition, a second condenser is arranged at the second low-temperature radiator, and in actual operation, the second condenser and the first condenser are the same condenser.
In combination with the foregoing, the motor and generator cooling circuits are similar in construction mechanism, and each employs two relatively small low temperature radiators, which can be disposed in a limited frame space.
The range extender is formed by combining the range extender engine, the generator and the generator electric controller. When the first motor and the second motor do not work and the range extender works, only the first fan and the second water pump can be started, so that the range extender is cooled, and energy consumption is saved; when the range extender does not work, the second fan and the first water pump are only started when the two motors work, heat generated by the motors actively dissipates heat through the second fan and the second low-temperature radiator and passively dissipates heat through the first low-temperature radiator, so that the specification area of the second low-temperature radiator can be reduced, and the energy consumption is reduced; when the two motors and the range extender are in the working state, the first water pump, the second water pump, the first fan and the second fan work to meet the heat dissipation requirement under the working condition.
The thermal management system further comprises: and the intercooler is used for cooling the air inlet of the range-extending engine.
Thus, in some preferred embodiments, to increase space utilization, the first low temperature radiator, the high temperature radiator, the intercooler, the first fan are integrally configured; the second low temperature radiator, the second condenser, and the second fan are integrally configured.
Finally, it can be further added that the first fan and the second fan can be replaced by a plurality of smaller fans, and the integrated structure can not be changed; the first water pump and the second water pump can also be replaced by a larger water pump matched with a proportional three-way valve, namely, the flow is provided by the larger water pump, and the flow flowing through the motor and the generator is controlled by the proportional three-way valve.
In summary, the main design concept of the present utility model is that the present utility model is composed of a coolant loop and a refrigerant loop which are connected with each other by pipelines and have different cooling mediums; the cooling liquid loop is divided into a battery cooling loop, a motor and generator cooling loop and a range-extending engine cooling loop, the refrigerant loop comprises a compressor, a first condenser, an evaporator, an electronic expansion valve, an electromagnetic valve and a cooler which are connected through pipelines, the refrigerant loop and the battery cooling loop share the cooler, and the refrigerating capacity of a cab and a battery pack is proportioned through opening and closing of the electromagnetic valve and opening control of the electronic expansion valve in the refrigerant loop. The utility model uses the waste heat recovery of the range-extended engine for producing the battery and the cab, and can not bring the impurities of the generator cooling loop into the battery cooling loop, and simultaneously realizes the energy consumption saving under each working condition by adjusting the components in the loop under each working condition.
In the embodiments of the present utility model, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relation of association objects, and indicates that there may be three kinds of relations, for example, a and/or B, and may indicate that a alone exists, a and B together, and B alone exists. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of the following" and the like means any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
The construction, features and effects of the present utility model are described in detail according to the embodiments shown in the drawings, but the above is only a preferred embodiment of the present utility model, and it should be understood that the technical features of the above embodiment and the preferred mode thereof can be reasonably combined and matched into various equivalent schemes by those skilled in the art without departing from or changing the design concept and technical effects of the present utility model; therefore, the utility model is not limited to the embodiments shown in the drawings, but is intended to be within the scope of the utility model as long as changes made in the concept of the utility model or modifications to the equivalent embodiments do not depart from the spirit of the utility model as covered by the specification and drawings.
Claims (10)
1. An extended range electric vehicle thermal management system, comprising: a coolant loop and a refrigerant loop which are connected with each other through pipelines and are provided with different cooling media; the cooling liquid loop consists of a battery cooling loop, a motor and generator cooling loop and a range-extending engine cooling loop;
the refrigerant loop comprises a compressor, a first condenser, an evaporator, an electronic expansion valve, an electromagnetic valve and a cooler which are connected through pipelines, wherein the refrigerant loop and the battery cooling loop share the cooler, and the cooler is used for conveying heat in the battery cooling loop into the refrigerant loop;
and the refrigerating capacity of the cab and the battery pack is proportioned by opening and closing the electromagnetic valve and opening the electronic expansion valve in the refrigerant loop.
2. The extended range electric vehicle thermal management system of claim 1, wherein the battery cooling circuit comprises a fourth water pump, the cooler, a second electronic three-way valve, a water-water heat exchanger, and a battery pack connected by pipelines;
the cooler is used for transferring heat generated by the battery pack to the refrigerant loop;
the water-water heat exchanger is used for transferring heat in the extended-range engine cooling circuit to the battery cooling circuit;
and disconnecting the battery cooling loop from the water-water heat exchanger through a second electronic three-way valve for battery self-circulation.
3. The extended range electric vehicle thermal management system of claim 2, wherein the extended range engine cooling circuit comprises the water-water heat exchanger, a warm air core, a third water pump, a PTC, a first electronic three-way valve, a high temperature radiator, an extended range engine, and a first fan disposed at the high temperature radiator, which are connected by a pipeline;
the water-water heat exchanger is used for transferring heat generated by the range-extending engine to the battery cooling loop;
the warm air core body is used for transmitting heat generated by the range-extending engine to the cab;
the high-temperature radiator and the first fan are used for cooling the range-extended engine;
in the non-working state of the range-extending engine, heat is generated by the PTC, and an internal small cycle of the range-extending engine is formed through a passage formed by the first electronic three-way valve, the water-water heat exchanger, the warm air core body and the third water pump.
4. The extended range electric vehicle thermal management system of claim 3, wherein the extended range engine cooling circuit further comprises a second water kettle connected between the high temperature radiator and the extended range engine by a pipe, the second water kettle for degassing and containing the expanded coolant.
5. The extended range electric vehicle thermal management system of claim 3, wherein the motor and generator cooling loop comprises a first water pump, a second water pump, an all-in-one controller, a first motor, a second motor, a generator electronic controller, a generator, a first low temperature radiator, a second low temperature radiator, the high temperature radiator, a four-way, and a second fan disposed at the second low temperature radiator connected by a pipeline;
the cooling liquid flows through the first water pump, the all-in-one controller, the first motor, the second low-temperature radiator, the first low-temperature radiator and the four-way joint to radiate heat of the first motor, the second motor and the all-in-one controller;
the cooling liquid flows through the second water pump, the electric generator controller, the generator, the first low-temperature radiator and the four-way joint to radiate the electric generator controller and the generator.
6. The extended range electric vehicle thermal management system of claim 5, wherein the motor and generator cooling circuit further comprises a first water tank connected to the four-way junction by piping, the first water tank for degassing and containing the expanded coolant.
7. The extended range electric vehicle thermal management system of claim 5, wherein a second condenser is provided at the second low temperature radiator.
8. The extended range electric vehicle thermal management system of claim 7, wherein the second low temperature radiator, the second condenser, and the second fan are integrally configured.
9. The extended range electric vehicle thermal management system of any of claims 5-8, further comprising: and the intercooler is used for cooling the air inlet of the range-extending engine.
10. The extended range electric vehicle thermal management system of claim 9, wherein the first low temperature radiator, the high temperature radiator, the intercooler, the first fan are integrally configured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223528354.2U CN219076949U (en) | 2022-12-28 | 2022-12-28 | Range-extending type electric automobile thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223528354.2U CN219076949U (en) | 2022-12-28 | 2022-12-28 | Range-extending type electric automobile thermal management system |
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| Publication Number | Publication Date |
|---|---|
| CN219076949U true CN219076949U (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223528354.2U Active CN219076949U (en) | 2022-12-28 | 2022-12-28 | Range-extending type electric automobile thermal management system |
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| Country | Link |
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| CN (1) | CN219076949U (en) |
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- 2022-12-28 CN CN202223528354.2U patent/CN219076949U/en active Active
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