A new energy vehicle heat pump device

Abstract

The present invention discloses a new energy vehicle heat pump device, which relates to the field of automotive thermal management technology. The device includes a vehicle three-electric heating module, a vehicle front-end heating module, a vehicle air conditioning heating module, a heat conduction module, a battery pack, an air conditioning box, and a water heating PTC module. The vehicle three-electric heating module, the vehicle front-end heating module, the vehicle air conditioning heating module, the battery pack, the air conditioning box, and the water heating PTC module are all connected to the heat conduction module. The heat conduction module is used to: transfer the heat energy generated by the vehicle three-electric heating module to the battery pack and / or the air conditioning box; transfer the heat energy generated by the water heating PTC module to the battery pack; transfer the heat energy absorbed by the vehicle front-end heating module to the battery pack and / or the air conditioning box respectively; and transfer the heat energy absorbed by the vehicle air conditioning heating module to the battery pack and / or the air conditioning box respectively. The present invention is compatible with the heat pump systems of pure electric vehicles and the air conditioning boxes of hybrid vehicles, meeting the thermal needs of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile thermal management, and in particular to a heat pump device for a new energy vehicle. Background Art

[0002] Most existing automotive heat pump system solutions utilize a built-in condenser, built-in electric PTC heaters, water-heated PTC heaters, and an external condenser, using refrigerant reversing to achieve compressor heating. However, this solution is incompatible with existing hybrid vehicle air conditioning systems (water heating core + evaporator). This requires redeveloping the air conditioning system to add a built-in condenser and air-heated PTC heaters, which is extremely expensive. Furthermore, the addition of a water-heated PTC heater to heat the battery in extremely cold weather also increases the cost per vehicle. Summary of the Invention

[0003] The purpose of the present invention is to provide a new energy vehicle heat pump device that is compatible with the heat pump system of pure electric vehicles and the air-conditioning box of hybrid vehicles to meet the thermal needs of the vehicle.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A new energy vehicle heat pump device includes a vehicle three-electric heating module, a vehicle front-end heating module, a vehicle air-conditioning heating module, a heat conduction module, a battery pack, an air-conditioning box, and a water heating PTC module;

[0006] The automobile three-electric heating module, the automobile front-end heating module, the automobile air-conditioning heating module, the battery pack, the air-conditioning box and the water heating PTC module are all connected to the heat conduction module;

[0007] The heat conduction module is used to: transfer the heat energy generated by the vehicle's three-electric heating module to the battery pack and / or the air-conditioning box; transfer the heat energy generated by the water heating PTC module to the battery pack; transfer the heat energy absorbed by the vehicle's front-end heating module to the battery pack and / or the air-conditioning box respectively; transfer the heat energy absorbed by the vehicle's air-conditioning heating module to the battery pack and / or the air-conditioning box respectively.

[0008] Optionally, the heat conduction module includes a bidirectional heat exchanger, a compressor and a bidirectional water-cooled condenser;

[0009] The bidirectional heat exchanger is respectively connected to the vehicle three-electric heating module, the vehicle front-end heating module and the vehicle air-conditioning heating module; the bidirectional water-cooled condenser is connected to the battery pack, and the bidirectional water-cooled condenser is also connected to the air-conditioning box through the water heating PTC module;

[0010] The bidirectional heat exchanger, the compressor and the bidirectional water-cooled condenser are connected end to end in sequence to form a heat transfer circulation loop;

[0011] The heat conduction circulation loop is used to transfer the heat energy absorbed by the bidirectional heat exchanger to the bidirectional water-cooled condenser.

[0012] Optionally, the automobile three-electric heating module includes an automobile three-electric system, a first four-way water valve, a second four-way water valve and a first three-way water valve; the automobile three-electric system includes a motor, an electronic control and a three-in-one power supply;

[0013] The automobile three-electric system, the first four-way water valve, the two-way heat exchanger, the second four-way water valve and the first three-way water valve are connected end to end in sequence to form an automobile three-electric circulation heating circuit;

[0014] The automobile three-electric cycle heating circuit is used to transfer the heat energy generated by the automobile three-electric system to the bidirectional heat exchanger.

[0015] Optionally, the vehicle front end heating module includes a vehicle front end radiator;

[0016] The front-end radiator of the automobile, the first four-way water valve, the two-way heat exchanger, the second four-way water valve and the first three-way water valve are connected end to end in sequence to form a front-end heating circulation loop;

[0017] The front-end heat supply circulation loop is used to transfer the heat energy of the air at the front-end radiator of the automobile to the bidirectional heat exchanger.

[0018] Optionally, the air conditioning box includes an evaporator;

[0019] The evaporator is connected end to end with the bidirectional heat exchanger;

[0020] The evaporator is used to absorb heat energy in the vehicle and transfer the heat energy in the vehicle to the bidirectional heat exchanger.

[0021] Optionally, the air conditioning box includes a water heating core;

[0022] The water heating PTC module includes an air conditioning water pump, a water heating PTC and a second three-way valve;

[0023] The two-way water-cooled condenser, the air-conditioning water pump, the water heating PTC, the second three-way valve, and the water heating core are connected end to end in sequence to form a water heating PTC circulation loop;

[0024] When the water heating PTC is not in operation, the water heating PTC circulation loop is used to:

[0025] transferring the heat energy received by the two-way water-cooled condenser to the water heating core;

[0026] When the water heating PTC is in working state, the water heating PTC circulation loop is also used for:

[0027] The heat energy generated by the water heating PTC is transferred to the two-way water-cooled condenser.

[0028] Optionally, the device further comprises:

[0029] The two-way water-cooled condenser, the second four-way water valve, the battery pack and the first four-way water valve are connected end to end in sequence to form a battery pack heating circulation loop;

[0030] The battery pack heating circulation loop is used to transfer the heat energy received by the two-way water-cooled condenser to the battery pack.

[0031] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0032] The present invention discloses a new energy vehicle heat pump device, wherein the vehicle's three-electric heating module, the vehicle's front-end heating module, the vehicle's air-conditioning heating module, the battery pack, the air-conditioning box, and the water heating PTC module are all connected to a heat conduction module; the heat conduction module transfers the heat energy generated by the vehicle's three-electric heating module to the battery pack and / or the air-conditioning box; transfers the heat energy generated by the water heating PTC module to the battery pack; transfers the heat energy absorbed by the vehicle's front-end heating module to the battery pack and / or the air-conditioning box respectively; and transfers the heat energy absorbed by the vehicle's air-conditioning heating module to the battery pack and / or the air-conditioning box respectively. The vehicle's three-electric heating module can absorb the heat energy generated by the vehicle's three-electric system during operation, the vehicle's front-end heating module can absorb the heat energy remaining in the air from the engine when the vehicle is stopped, and the vehicle's air-conditioning heating module can absorb the heat energy in the air in the vehicle's passenger compartment, thereby generating and reusing heat energy through multiple channels. Both the heat pump system of a pure electric vehicle and the air-conditioning box of a hybrid vehicle can utilize the device of the present invention to achieve heating. Then, transferring the heat energy to the battery pack can ensure the stable operation of the car battery, thereby ensuring the smooth and long-term driving of the car; transferring the heat energy to the air-conditioning box can provide a warm environment for the passengers in the car's passenger compartment, thereby meeting the car's thermal needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a schematic structural diagram of the heat pump device for new energy vehicles of the present invention.

[0035] Explanation of symbols:

[0036] 1-motor water pump, 2-three-in-one power supply, 3-motor electronic control, 4-battery pack, 5-first four-way water valve, 6-two-way water-cooled condenser, 7-air conditioning water pump, 8-water heating PTC, 9-second three-way water valve, 10-air conditioning box, 11-two-way heat exchanger, 12-compressor, 13-second four-way water valve, 14-first three-way water valve, 15-vehicle front end radiator, 16-battery water pump. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] The purpose of the present invention is to provide a new energy vehicle heat pump device that can realize more than ten working conditions such as battery cooling and heating, air conditioning cooling and heating, and motor electronic control charging three-in-one cooling.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] like Figure 1 As shown, this embodiment provides a new energy vehicle heat pump device, including a vehicle three-electric heating module, a vehicle front-end heating module, a vehicle air conditioning heating module, a heat conduction module, a battery pack 4, an air conditioning box 10, and a water heating PTC module. The vehicle three-electric heating module, the vehicle front-end heating module, the vehicle air conditioning heating module, the battery pack 4, the air conditioning box 10, and the water heating PTC module are all connected to the heat conduction module.

[0041] The heat conduction module is used to: transfer the heat energy generated by the vehicle's three-electric heating module to the battery pack and / or the air-conditioning box; transfer the heat energy generated by the water heating PTC module to the battery pack; transfer the heat energy absorbed by the vehicle's front-end heating module to the battery pack and / or the air-conditioning box respectively; transfer the heat energy absorbed by the vehicle's air-conditioning heating module to the battery pack and / or the air-conditioning box respectively.

[0042] The heat transfer module includes a bidirectional heat exchanger 11, a compressor 12, and a bidirectional water-cooled condenser 6. The bidirectional heat exchanger 11 is connected to the vehicle's three-electric heating module, the vehicle's front-end heating module, and the vehicle's air conditioning heating module. The bidirectional heat exchanger 11 is used to absorb heat energy generated or absorbed by these modules. The bidirectional water-cooled condenser 6 is connected to the battery pack 4 and is also connected to the air conditioning box 10 via the water-heating PTC module.

[0043] The bidirectional heat exchanger 11, the compressor 12, and the bidirectional water-cooled condenser 6 are connected end-to-end to form a heat transfer loop. The heat transfer loop is used to transfer the heat energy absorbed by the bidirectional heat exchanger 11 to the bidirectional water-cooled condenser 6. The bidirectional water-cooled condenser 6 is used to transfer the heat energy absorbed by the bidirectional heat exchanger 11 to the battery pack 4 or the water-heating PTC module.

[0044] The automotive three-electric heating module includes a three-electric system, a first four-way water valve 5, a second four-way water valve 13, and a first three-way water valve 14. The three-electric system includes a motor, an electronic control system, and a three-in-one power supply 2. The three-electric system, the first four-way water valve 5, the bidirectional heat exchanger 11, the second four-way water valve 13, and the first three-way water valve 14 are sequentially connected end-to-end to form a three-electric heating circuit. This circuit is used to transfer heat energy generated by the three-electric system to the bidirectional heat exchanger.

[0045] The device also includes: the two-way water-cooled condenser, the second four-way water valve, the battery pack and the first four-way water valve are connected end to end in sequence to form a battery pack heating circulation loop; the battery pack heating circulation loop is used to transfer the heat energy received by the two-way water-cooled condenser to the battery pack.

[0046] Specifically, when the vehicle is running, the motor and electronic control 3 and three-in-one power supply 2 generate heat, which is transferred to the two-way heat exchanger 11 through the first four-way water valve 5. The compressor 12 then absorbs this heat through the two-way heat exchanger 11 and transfers the compressed heat to the two-way water-cooled condenser 6. The heat energy absorbed by the two-way water-cooled condenser 6 is then transferred to the battery pack 4 through the battery pack heating circuit to heat the battery pack 4. Simultaneously, the heat energy absorbed by the two-way water-cooled condenser 6 is transferred to the water heating core in the air conditioning box 10 through the water heating PTC circuit.

[0047] The device further comprises a blower; the blower is used for blowing air toward the water heating core to provide hot air to the vehicle passenger compartment.

[0048] Furthermore, when the vehicle is running and only the battery needs to be heated, the heat generated by the motor and electronic control 3 and the three-in-one power supply 2 can be directly introduced into the battery pack 4 to heat the battery.

[0049] The automobile front-end heating module includes an automobile front-end radiator 15; the automobile front-end radiator 15, the first four-way water valve 5, the two-way heat exchanger 11, the second four-way water valve 13 and the first three-way water valve 14 are connected end to end in sequence to form a front-end heating circulation loop.

[0050] The front-end heating circulation loop is used to transfer the heat energy of the air at the front-end radiator of the car to the two-way heat exchanger. Specifically, when the vehicle stops, the motor electronic control 3 and the three-in-one power supply 2 cannot provide heat, and can only absorb the heat of the air through the water channel of the front-end radiator 15 of the car; the compressor 12 absorbs the heat of the water in the front-end radiator 15 of the car through the two-way heat exchanger 11, and transfers the heat after compression to the two-way water-cooled condenser 6. Then, through the battery pack heating circulation loop, the heat energy absorbed by the two-way water-cooled condenser 6 is exchanged to the battery pack 4 to heat the battery pack 4. At the same time, through the water heating PTC circulation loop, the heat energy absorbed by the two-way water-cooled condenser 6 is exchanged to the water heating core in the air-conditioning box 10, and the wind from the blower passes through the heated water heating core to provide hot air to the passenger compartment;

[0051] The air conditioning box 10 further includes an evaporator; the evaporator is connected end to end with the bidirectional heat exchanger; the evaporator is used to absorb heat energy in the car and transfer the heat energy in the car to the bidirectional heat exchanger.

[0052] Specifically, when the car is parked and locked for charging, the temperature in the cab is high and the battery needs to be heated. The heat from the air in the car can be absorbed by the evaporator in the indoor air-conditioning box 10 and transferred to the two-way heat exchanger 11. The heat is then compressed by the compressor 12 and transferred to the two-way water-cooled condenser 6. The water in the battery pack 4 is exchanged through the two-way water-cooled condenser 6 to heat the battery pack.

[0053] The water heating PTC module includes an air conditioning water pump 7, a water heating PTC 8 and a second three-way valve 9; the two-way water-cooled condenser 6, the air conditioning water pump 7, the water heating PTC 8, the second three-way valve 9, and the water heating core are connected end to end in sequence to form a water heating PTC circulation loop.

[0054] When the water heating PTC 8 is not in a working state, the water heating PTC circulation loop is used to transfer the heat energy received by the two-way water-cooled condenser 6 to the water heating core.

[0055] When the water heating PTC 8 is in the working state, the water heating PTC circulation loop is also used to transfer the heat energy generated by the water heating PTC 8 to the two-way water-cooled condenser 6 .

[0056] Specifically, in extremely cold weather, the heat pump system cannot work, and the water heating PTC8 is used for heating: the water heating PTC8 heats the coolant and then heats the battery pack 4 through the bidirectional heat exchanger 11, while heating the passenger compartment through the water heating core of the air-conditioning box.

[0057] Furthermore, regarding the cooling of the motor and electronic control 3 and the three-in-one power supply 2: the cooling of the motor and electronic control and the three-in-one power supply is dissipated through a small cycle by default. When the water channel temperature rises to a threshold, the ratio of the three-way water valve is controlled and the heat is dissipated through a large cycle, that is, the front-end radiator.

[0058] In one specific embodiment, the motor water pump 1, three-in-one power supply 2 and motor electronic control 3, valve port 4 of the first four-way water valve, valve port 2 of the first four-way water valve, bidirectional heat exchanger 11, valve port 2 of the second four-way water valve 13, valve port 4 of the second four-way water valve, water inlet of the first three-way water valve, and first water outlet of the first three-way water valve are connected end-to-end via water pipes to form a three-electric circulation heating circuit for the vehicle. One end of the vehicle front radiator 15 is connected to one end of the motor water pump 16, and the other end of the vehicle front radiator 15 is connected to the second water outlet of the first three-way water valve via water pipes, thereby forming a front-end heating circulation circuit. The battery pack 4, valve port 1 of the first four-way water valve 13, valve port 3 of the first four-way water valve, bidirectional water-cooled condenser 6, valve port 3 of the second four-way water valve 13, valve port 1 of the second four-way water valve, and battery water pump 16 are connected end-to-end via water pipes to form a battery pack heating circulation circuit. The two-way water-cooled condenser 6, the air-conditioning water pump 7, the water heating PTC 8, the water inlet of the second three-way valve 9, the first water outlet of the second three-way valve 9, and the water heating core are connected end to end through pipelines to form a water heating PTC circulation loop.

[0059] Compared with the prior art, the present invention also has the following advantages:

[0060] (1) The present invention achieves compatibility between the heat pump system of pure electric vehicles and the air-conditioning box of hybrid vehicles, and different vehicle models can use the same air-conditioning box.

[0061] (2) The present invention eliminates the external condenser and adopts a plate exchange method to solve the heat dissipation of the compressor and the heat absorption of the air by the compressor through the front radiator, which can reduce the cost of the entire vehicle.

[0062] (3) The present invention can make full use of the waste heat of the motor to heat the air conditioner and the battery; it can also enable the compressor to be efficiently used in more than ten working conditions such as battery cooling and heating, air conditioning cooling and heating, and motor electronic control charging three-in-one cooling.

[0063] (4) The present invention retains the water heating PTC heating mode for extremely cold weather. Even in extremely cold weather or when the heat pump system is insufficiently heated, the water heating PTC function can still be used to meet the heating needs of the passenger compartment and the battery pack.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0065] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A new energy vehicle heat pump device, characterized in that: The device includes an automotive three-electric heating module, an automotive front-end heating module, an automotive air-conditioning heating module, a heat conduction module, a battery pack, an air-conditioning box, and a water heating PTC module; The automobile three-electric heating module, the automobile front-end heating module, the automobile air-conditioning heating module, the battery pack, the air-conditioning box and the water heating PTC module are all connected to the heat conduction module; The heat conduction module is used to: transfer the heat energy generated by the vehicle's three-electric heating module to the battery pack and / or the air conditioning box; transfer the heat energy generated by the water heating PTC module to the battery pack; transfer the heat energy absorbed by the vehicle's front-end heating module to the battery pack and / or the air conditioning box; and transfer the heat energy absorbed by the vehicle's air conditioning heating module to the battery pack and / or the air conditioning box. The heat transfer module includes a bidirectional heat exchanger, a compressor, and a bidirectional water-cooled condenser; the bidirectional heat exchanger is respectively connected to the vehicle's three-electric heating module, the vehicle's front-end heating module, and the vehicle's air-conditioning heating module; the bidirectional water-cooled condenser is connected to the battery pack, and the bidirectional water-cooled condenser is also connected to the air-conditioning box through the water-heating PTC module; the bidirectional heat exchanger, the compressor, and the bidirectional water-cooled condenser are connected end to end in sequence to form a heat transfer circulation loop; the heat transfer circulation loop is used to transfer heat energy absorbed by the bidirectional heat exchanger to the bidirectional water-cooled condenser; The automobile front-end heating module includes an automobile front-end radiator; the automobile three-electric heating module includes a first four-way water valve, a second four-way water valve and a first three-way water valve; the automobile front-end radiator, the first four-way water valve, the two-way heat exchanger, the second four-way water valve and the first three-way water valve are connected end to end in sequence to form a front-end heating circulation loop; the front-end heating circulation loop is used to transfer the air heat energy at the automobile front-end radiator to the two-way heat exchanger.

2. The new energy vehicle heat pump device according to claim 1, characterized in that: The automobile three-electric heating module includes an automobile three-electric system; the automobile three-electric system includes a motor, an electronic control and a three-in-one power supply; The automobile three-electric system, the first four-way water valve, the two-way heat exchanger, the second four-way water valve and the first three-way water valve are connected end to end in sequence to form an automobile three-electric circulation heating circuit; The automobile three-electric cycle heating circuit is used to transfer the heat energy generated by the automobile three-electric system to the bidirectional heat exchanger.

3. The new energy vehicle heat pump device according to claim 1, characterized in that: The air conditioning box includes an evaporator; The evaporator is connected end to end with the bidirectional heat exchanger; The evaporator is used to absorb heat energy in the vehicle and transfer the heat energy in the vehicle to the bidirectional heat exchanger.

4. The new energy vehicle heat pump device according to claim 1, characterized in that: The air conditioning box includes a water heating core; The water heating PTC module includes an air conditioning water pump, a water heating PTC and a second three-way valve; The two-way water-cooled condenser, the air-conditioning water pump, the water heating PTC, the second three-way valve, and the water heating core are connected end to end in sequence to form a water heating PTC circulation loop; When the water heating PTC is not in operation, the water heating PTC circulation loop is used to: transferring the heat energy received by the two-way water-cooled condenser to the water heating core; When the water heating PTC is in working state, the water heating PTC circulation loop is also used for: The heat energy generated by the water heating PTC is transferred to the two-way water-cooled condenser.

5. The new energy vehicle heat pump device according to claim 2, characterized in that: The device further comprises: The two-way water-cooled condenser, the second four-way water valve, the battery pack and the first four-way water valve are connected end to end in sequence to form a battery pack heating circulation loop; The battery pack heating circulation loop is used to transfer the heat energy received by the two-way water-cooled condenser to the battery pack.

6. The new energy vehicle heat pump device according to claim 4, characterized in that: The device also includes a blower; The blower is used to blow air toward the water heating core to provide hot air to the vehicle passenger compartment.

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