Hybrid vehicle heat storage heat pump system and vehicle

Abstract

The application discloses a hybrid vehicle heat storage type heat pump system and vehicle, and belongs to the technical field of vehicles. It comprises: a heat pump unit; an auxiliary heating circuit; an engine cooling water waste heat recovery circuit; a first heat storage circuit and a battery heating circuit. The auxiliary heating circuit can further meet the larger heating demand of the passenger cabin, the engine cooling water waste heat recovery makes the heat of the engine cooling water better utilized, while reducing the energy consumption of the heating circuit. The first heat storage circuit and the first heat utilization circuit store and then utilize the heat of the engine cooling water, achieving the effect of efficiently utilizing the heat of the engine cooling water. The battery heating circuit can utilize the PTC heater to heat the power battery, reduce the endurance attenuation of the power battery, and ensure the endurance mileage of the power battery under the background of low temperature. The power battery can be directly or indirectly heated by the first heat storage body and / or the engine cooling water, fully utilizing the waste heat energy of the engine cooling water, and improving the utilization effect of the waste heat energy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a hybrid vehicle heat storage type heat pump system and vehicle. BACKGROUND

[0002] The PHEV vehicle model, i.e. the hybrid vehicle model (referred to as the hybrid vehicle), has a battery endurance mileage that is significantly reduced in cold weather compared to summer, the battery is prone to power loss, the fuel participation is higher, and the vehicle use cost is increased. Therefore, improving the battery endurance mileage in low temperature weather is an industry pain point. Under the background of low temperature, the battery power consumption is large in heating, which further compresses the endurance mileage of the power battery. SUMMARY

[0003] The present application aims to provide a hybrid vehicle heat storage type heat pump system and vehicle to solve one or more technical problems existing in the prior art, at least to provide a beneficial choice or to create conditions.

[0004] To solve the above technical problems, the technical scheme adopted provides a hybrid vehicle heat storage type heat pump system, comprising: a heat pump unit, comprising a heating circuit and a refrigeration circuit, the heating circuit comprising a compressor, a water-cooled condenser, a first expansion valve, an outside heat exchanger, a third stop valve and a gas-liquid separator connected in sequence, the heating circuit absorbing heat from the outside through the outside heat exchanger, the refrigeration circuit comprising the compressor, the water-cooled condenser, a second stop valve, the outside heat exchanger, a second expansion valve, an inside heat exchanger and the gas-liquid separator connected in sequence, the refrigeration circuit absorbing heat through the inside heat exchanger to refrigerate; an auxiliary heating circuit comprising a PTC heater, a third water pump and the water-cooled condenser connected in sequence, the heating circuit supplying heat to the water-cooled condenser through the PTC heater; an engine cooling water waste heat recovery circuit comprising an engine cooling water system, a first valve, the water-cooled condenser, the PTC heater, the third water pump, a first three-way valve and a second water pump connected in sequence, the heating circuit being connected with the engine cooling water waste heat recovery circuit through the first three-way valve, the engine cooling water waste heat recovery circuit supplying heat to the water-cooled condenser through engine cooling water; a first heat storage circuit comprising the engine cooling water system, a second valve, a first heat storage body, the first three-way valve and the second water pump connected in sequence, the first heat storage circuit being used for storing heat of the engine cooling water to the first heat storage body; a first heat utilization circuit comprising the first heat storage body, the water-cooled condenser, the PTC heater, the third water pump, the first three-way valve, the second water pump and a third valve connected in sequence, the first heat utilization circuit being used for supplying heat of the first heat storage body to the water-cooled condenser; and a battery heating circuit comprising the PTC heater, the third water pump and a power battery connected in sequence, the battery heating circuit supplying heat to the power battery through the PTC heater.

[0005] The technical scheme has at least the following beneficial effects: the heat pump unit can meet the cooling and heating requirements of the passenger cabin through the heating circuit and the refrigeration circuit. When the heating circuit of the heat pump unit is working, the auxiliary heating circuit can heat the circuit through the PTC heater, heat the liquid in the water-cooled condenser, improve the heating effect of the heating circuit of the heat pump unit, further meet the large heating requirement of the passenger cabin, and reduce the energy consumption of the heating circuit. In addition, when the engine is working, the engine cooling water can heat the liquid in the water-cooled condenser through the engine cooling water waste heat recovery circuit, so that the heat of the engine cooling water is better utilized, and the energy consumption of the heating circuit is reduced. In addition, the engine cooling water can also heat the engine cooling water through the first heat storage circuit and the first heat utilization circuit, and release heat to heat the water-cooled condenser when needed, so as to achieve the effect of efficiently utilizing the heat of the engine cooling water, and further reduce the energy consumption of the heating circuit. The battery heating circuit can heat the power battery by using the PTC heater, reduce the endurance decay of the power battery, and ensure the endurance mileage of the power battery under low temperature background.

[0006] In addition, during the working process of the engine cooling water waste heat recovery circuit, the cooling liquid in the PTC heater is affected by the heating of the passenger cabin, and the water temperature is relatively high. When the battery heating circuit is connected, the engine cooling water waste heat recovery circuit can indirectly heat the power battery. Even if the power battery can be directly or indirectly heated by the first heat storage body and / or the engine cooling water, the waste heat energy of the engine cooling water can be fully utilized, and the utilization effect of the waste heat energy is improved.

[0007] Optionally, the heat pump system further comprises a first control unit, and the first control unit is configured to: when the vehicle has a heating requirement, the priority of the heating work is the engine cooling water waste heat recovery circuit, the first heat utilization circuit, the heating circuit, and the auxiliary heating circuit in sequence. The waste heat energy of the engine cooling water is fully utilized before the PTC heater is used for heating, so as to reduce the heating energy consumption as much as possible and improve the endurance mileage of the vehicle.

[0008] Optionally, the heat pump system further comprises a headlamp waste heat recovery circuit, the headlamp waste heat recovery circuit comprising a second heat storage circuit and a second heat utilization circuit, the second heat storage circuit comprising a second heat storage body, a fourth water pump and a headlamp system connected in series, the second heat storage circuit being configured to store heat generated by the headlamp system into the second heat storage body; the second heat utilization circuit comprising the second heat storage body, the PTC heater, the third water pump, the power battery and a third three-way valve connected in series, the second heat utilization circuit being configured to supply heat to the power battery by using heat stored in the second heat storage body, and the second heat utilization circuit being connected to the battery heating circuit through the third three-way valve. By storing heat generated by the headlamp system when the headlamp system is working, the stored heat can be used to heat the power battery, thereby improving the waste heat utilization efficiency and further solving the problem of heating the battery. In addition, on the basis of the engine cooling water waste heat recovery circuit and the heat pump unit, the double heat storage bodies and the PTC heater are used as auxiliary heat sources, and the multiple heat sources are used to heat the passenger compartment and the power battery, thereby solving the problem of heating in different environments and improving the winter driving endurance of the power battery. In addition, the double heat storage bodies can be arranged flexibly in the engine compartment, thereby improving the utilization rate of the engine compartment space.

[0009] Optionally, the heat pump system further comprises a low-temperature heat dissipation circuit, the low-temperature heat dissipation circuit comprising the headlamp system, a fourth three-way valve, a low-temperature heat sink and the fourth water pump connected in series, the low-temperature heat dissipation circuit being connected to the headlamp waste heat recovery circuit through the fourth three-way valve, and the low-temperature heat dissipation circuit being configured to dissipate heat of the headlamp system through the low-temperature heat sink. When the heat capacity of the second heat storage body is full, the low-temperature heat sink can be used to dissipate heat of the headlamp system, thereby preventing the headlamp system from being damaged due to overheating.

[0010] Optionally, the headlamp waste heat recovery circuit further comprises a motor system connected in series with the headlamp system, and the second heat storage circuit is further configured to store heat generated by the motor system into the second heat storage body. The heat generated by the motor system can be stored and utilized, thereby improving the energy utilization rate.

[0011] Optionally, the heat pump system further comprises a high-temperature heat dissipation circuit, the high-temperature heat dissipation circuit comprising the engine cooling water system, a fourth valve, a high-temperature heat sink, the water-cooled condenser, the PTC heater, the third water pump, the first three-way valve and the second water pump connected in series, the high-temperature heat dissipation circuit being configured to dissipate heat of the engine cooling water. The high-temperature heat dissipation circuit is used to ensure the cooling performance of the engine cooling water.

[0012] Optionally, the heat pump system further comprises a fourth control unit, the fourth control unit is configured to: adjust the flow of engine cooling water distributed in the engine cooling water waste heat recovery circuit, the first heat storage circuit and the high-temperature heat sink by controlling the opening degree of the first valve, the second valve and the fourth valve; when the engine cooling water exceeds the heat load and the engine cooling performance is insufficient, if the heat absorption efficiency of the first heat storage body is greater than the heat dissipation efficiency of the high-temperature heat sink, the opening degree of the second valve is increased until the first heat storage body is full of heat capacity; if the heat absorption efficiency of the first heat storage body is less than or equal to the heat dissipation efficiency of the high-temperature heat sink, the second valve is closed and the opening degree of the fourth valve is increased. By selecting the first heat storage body or the high-temperature heat sink with higher efficiency to reduce the temperature of the engine cooling water, the cooling performance of the engine cooling water can be guaranteed, and the influence on the engine cooling water waste heat recovery circuit after adjustment can be reduced, thereby guaranteeing the stability and reliability of the whole heat pump system.

[0013] Optionally, the heat pump system further comprises a tail gas waste heat recovery circuit, the tail gas waste heat recovery circuit comprises the first heat storage body, a tail gas exhaust system, a first water pump and a fifth valve connected in series, and the tail gas waste heat recovery circuit is configured to store the heat of the tail gas into the first heat storage body. The heat of the tail gas waste heat is fully utilized, the heat source of the first heat storage body is increased, the structure space is saved, and the heat storage efficiency is improved.

[0014] Optionally, the first valve, the second valve, the third valve, the fourth valve and the fifth valve are collectively integrated into an eight-way valve, the eight-way valve comprises eight communication ports A8, B8, C8, D8, E8, F8, G8 and H8, the D8 is connected with the A8, the B8 and the C8 and can independently adjust the opening degree, and respectively constitutes the second valve, the fourth valve and the first valve; the E8 is connected with the H8, and constitutes the third valve; and the G8 is connected with the F8, and constitutes the fifth valve. The eight-way valve is adopted to flexibly distribute the flow of the engine cooling water for heat storage, heat dissipation and heat supply, the number of valves is reduced, and the control is facilitated.

[0015] Optionally, the heat pump system further comprises a first battery heat dissipation circuit, the first battery heat dissipation circuit comprises a battery cooler, the gas-liquid separator, the compressor, the water-cooled condenser, the second stop valve, the vehicle-external heat exchanger and a third expansion valve connected in series, the battery cooler is further arranged in the battery heating circuit in series, and the first battery heat dissipation circuit exchanges heat with the battery heating circuit through the battery cooler. The power battery can be cooled.

[0016] Optionally, the heat pump system further comprises a second battery heat dissipation circuit, the second battery heat dissipation circuit comprises a battery heating temperature control radiator, the power battery, the PTC heater, a third water pump and a second three-way valve, the second battery heat dissipation circuit is connected with the battery heating circuit through the second three-way valve, and the second battery heat dissipation circuit is used for adjusting the heating temperature of the power battery by regulating the opening degree of the second three-way valve. The water temperature flowing into the power battery is regulated through the second three-way valve, so that the liquid temperature of the power battery is prevented from being too high and the power battery is prevented from being damaged.

[0017] Optionally, the heat pump system further comprises a sixth control unit, the sixth control unit is used for: when the first battery heat dissipation circuit works, the second battery heat dissipation circuit is closed by controlling the opening degree of the second three-way valve. When the first battery heat dissipation circuit works, the power battery is cooled, and the liquid temperature in the battery heating circuit is relatively high; therefore, the second battery heat dissipation circuit is closed to prevent the battery heating temperature control radiator from absorbing heat from the outside and affecting the cooling effect of the power battery.

[0018] A vehicle comprises the hybrid vehicle heat storage type heat pump system described in any one of the preceding embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application in any way. In the drawings:

[0020] Figure 1 FIG. 1 is a schematic diagram of the overall structure of the heat pump system according to an embodiment of the application;

[0021] Figure 2 FIG. 2 is a schematic diagram of the structure of the first heat storage body according to an embodiment of the application;

[0022] Figure 3 FIG. 3 is a schematic diagram of the structure of the second heat storage body according to an embodiment of the application;

[0023] Figure 4 FIG. 4 is a schematic diagram of the structure of the heat pump unit according to an embodiment of the application;

[0024] Figure 5 FIG. 5 is a schematic diagram of the structure of the refrigeration circuit according to an embodiment of the application;

[0025] Figure 6 FIG. 6 is a schematic diagram of the structure of the heating circuit according to an embodiment of the application;

[0026] Figure 7 FIG. 7 is a schematic diagram of the structure of the auxiliary heating circuit, the engine cooling water waste heat recovery circuit and the first heat utilization circuit according to an embodiment of the application;

[0027] Figure 8 Structure diagram of the first heat storage circuit and the second battery heat dissipation circuit when the passenger cabin needs heating in the embodiment of the present application;

[0028] Figure 9 Structure diagram of the first heat storage circuit and the tail gas waste heat recovery circuit when the passenger cabin does not need heating in the embodiment of the present application;

[0029] Figure 10 Structure diagram of the first heat storage circuit and the tail gas waste heat recovery circuit when the passenger cabin needs heating in the embodiment of the present application;

[0030] Figure 11 Structure diagram of the headlamp waste heat recovery circuit in the embodiment of the present application.

[0031] 10, compressor; 11, water-cooled condenser; 12, vehicle external heat exchanger; 13, vehicle internal heat exchanger; 14, gas-liquid separator; 15, PTC heater; 16, battery cooler; 17, power battery; 18, battery heating temperature control radiator; 20, second heat storage body; 21, low-temperature radiator; 22, headlamp system; 23, motor system; 30, engine cooling water system; 31, eight-way valve; 32, high-temperature radiator; 33, first heat storage body; 34, tail gas exhaust system;

[0032] 41, first water pump; 42, second water pump; 43, third water pump; 44, fourth water pump;

[0033] 51, first three-way valve; 52, second three-way valve; 53, third three-way valve; 54, fourth three-way valve;

[0034] 61, first expansion valve; 62, second expansion valve; 63, third expansion valve;

[0035] 71, first stop valve; 72, second stop valve; 73, third stop valve. DETAILED DESCRIPTION

[0036] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0037] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the terms thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product, or apparatus.

[0038] As shown in Figures 1-11 A hybrid vehicle heat storage type heat pump system applied in a hybrid vehicle, the heat pump system comprising a heat pump unit, an auxiliary heating circuit, an engine cooling water waste heat recovery circuit and a battery heating circuit.

[0039] The heat pump unit comprises a heating circuit and a refrigeration circuit, the heating circuit comprising a compressor 10, a water-cooled condenser 11, a first expansion valve 61, an outside heat exchanger 12, a third stop valve 73 and a gas-liquid separator 14 connected in sequence, the heating circuit absorbing heat from the outside through the outside heat exchanger 12, the refrigeration circuit comprising a compressor 10, a water-cooled condenser 11, a second stop valve 72, an outside heat exchanger 12, a second expansion valve 62, an inside heat exchanger 13 and a gas-liquid separator 14 connected in sequence, the refrigeration circuit absorbing heat through the inside heat exchanger 13.

[0040] Specifically, the heating circuit comprises a compressor 10, a water-cooled condenser 11, a first expansion valve 61, an outside heat exchanger 12, a third stop valve 73 and a gas-liquid separator 14 connected in sequence. The refrigeration circuit comprises a compressor 10, a water-cooled condenser 11, a second stop valve 72, an outside heat exchanger 12, a second expansion valve 62, an inside heat exchanger 13 and a gas-liquid separator 14 connected in sequence. The first expansion valve 61 and the second stop valve 72 are connected in parallel, and the inside heat exchanger 13 is connected in series with the second expansion valve 62 and then connected in parallel with the third stop valve 73. In the refrigeration circuit, the second stop valve 72 is fully open, the inside heat exchanger 13 acts as an evaporator, the outside heat exchanger 12 acts as a condenser, and the water-cooled condenser 11 does not work in the refrigeration condition and can be regarded as a water pipe. When the compressor 10 is working, the inside heat exchanger 13 can achieve refrigeration effect. In the heating circuit, the outside heat exchanger 12 acts as an evaporator to absorb heat from the outside to achieve heating effect. Through the working of the compressor 10 in the heat pump unit, cooling or heating of the passenger compartment can be achieved.

[0041] The auxiliary heating circuit comprises a PTC heater 15, a third water pump 43 and a water-cooled condenser 11 connected in sequence, and the heating circuit supplies heat for the water-cooled condenser 11 through the PTC heater 15.

[0042] Specifically, the auxiliary heating circuit comprises a PTC heater 15, a third water pump 43 and a water-cooled condenser 11 connected in sequence. The PTC (Positive Temperature Coefficient) heater refers to a device that uses a positive temperature coefficient thermistor to achieve heating. The water-cooled condenser 11 is provided with two channels that can conduct heat to each other, the first channel is connected between the heating circuit and the refrigeration circuit of the heat pump unit, and the second channel is connected to the auxiliary heating circuit. The PTC heater 15 can heat the liquid in the auxiliary heating circuit, and the liquid in the second channel of the water-cooled condenser 11 is circulated under the push of the third water pump 43, so that the liquid in the second channel of the water-cooled condenser 11 is heated, and the liquid in the heating circuit of the heat pump unit is improved. The applicable temperature range of the heating circuit in the heat pump unit can be improved by auxiliary heating through the PTC heater 15. Through the cooperative work of the auxiliary heating circuit and the heating circuit in the heat pump unit, the energy consumption and system efficiency can be optimized while ensuring the temperature in the vehicle.

[0043] The engine cooling water waste heat recovery circuit comprises an engine cooling water system 30, a first valve, a water-cooled condenser 11, a PTC heater 15, a third water pump 43, a first three-way valve 51 and a second water pump 42 connected in sequence. The heating circuit is connected to the engine cooling water waste heat recovery circuit through the first three-way valve 51, and the engine cooling water waste heat recovery circuit supplies heat for the water-cooled condenser 11 through the engine cooling water.

[0044] Specifically, the engine cooling water waste heat recovery circuit comprises an engine cooling water system 30, a first valve, a water-cooled condenser 11, a PTC heater 15, a third water pump 43, a first three-way valve 51 and a second water pump 42 connected in sequence. The first three-way valve 51 comprises three communication ports A1, B1 and C1, A1 and B1 only have two states of opening and closing, and C1 can be adjusted from 0% to 100%. Among them, B1 and C1 are connected to the auxiliary heating circuit, B1 is close to the third water pump 43, C1 is close to the water-cooled condenser 11, and A1 is connected between the second water pump 42 and the third water pump 43. It can be understood that the engine cooling water waste heat recovery circuit is connected in parallel with a no-load section of the auxiliary heating circuit, and the on-off of the no-load section is adjusted by the switch of B1.

[0045] The heat pump system further comprises a first heat storage circuit and a first heat utilization circuit, the first heat storage circuit comprising the engine cooling water system 30, the second valve, the first heat storage body 33, the first three-way valve 51 and the second water pump 42 connected in sequence, and being used for storing the heat of the engine cooling water into the first heat storage body 33; the first heat utilization circuit comprising the first heat storage body 33, the water-cooled condenser 11, the PTC heater 15, the third water pump 43, the first three-way valve 51, the second water pump 42 and the third valve connected in sequence, and being used for supplying the heat of the first heat storage body 33 to the water-cooled condenser 11.

[0046] Specifically, when the temperature is low in the morning or at night and the temperature is high at noon in late autumn or early spring, the passenger compartment does not need to be heated, the first heat storage circuit is only used for storing the heat of the engine cooling water and does not provide heat, that is, when the A1 port and the B1 port of the first three-way valve 51 are opened and the C1 port is completely closed, the first heat storage circuit is sequentially connected by the engine cooling water system 30, the second valve, the first heat storage body 33, the B1 port and the A1 port of the first three-way valve 51 and the second water pump 42, and the heat energy of the engine cooling can be stored into the first heat storage body 33.

[0047] When the passenger compartment needs to be heated and the heat of the engine cooling water exceeds the heat load to be borne, the first heat storage circuit works, that is, when the A1 port and the C1 port of the first three-way valve 51 are opened and the B1 port is completely closed, the first heat storage circuit is sequentially connected by the engine cooling water system 30, the second valve, the first heat storage body 33, the water-cooled condenser 11, the PTC heater 15, the third water pump 43, the C1 port and the A1 port of the first three-way valve 51 and the second water pump 42, at this time, one of the second water pump 42 and the third water pump 43 works, or the second water pump 42 and the third water pump 43 work at the same time, and the heat energy of the engine cooling water can be stored into the first heat storage body 33, and at the same time, the heat energy is also transmitted to the water-cooled condenser 11 for auxiliary heating.

[0048] The first heat utilization circuit is sequentially connected by the first heat storage body 33, the water-cooled condenser 11, the PTC heater 15, the third water pump 43, the C1 port and the A1 port of the first three-way valve 51, the second water pump 42 and the third valve. The heat in the first heat storage body 33 can be brought into the water-cooled condenser 11 to achieve auxiliary heating. It should be noted that the first heat storage body 33 contains two heat-transferring pipelines, the first pipeline is connected in the first heat storage circuit, and the second pipeline is connected in the first heat utilization circuit. The first pipeline in the first heat storage body 33 is located in the heat storage area, and the second pipeline is located in the heat exchange area. The first pipeline of the first heat storage body 33 is arranged in the form of a coil to increase the heat exchange area. The partition plate between the heat storage area and the heat exchange area is made of copper or a material with a higher thermal conductivity. The first pipeline in the heat storage area can store the heat of the engine cooling water, and the heat exchange area is used for heat supply by utilizing the stored waste heat.

[0049] In addition to the heating circuit of the heat pump unit, the engine cooling water waste heat recovery circuit, the first heat storage circuit and the auxiliary heating circuit jointly bear the heat load of the vehicle, such as the heat load of the passenger cabin. Among them, when the auxiliary heating circuit jointly bears the heat load with the heating circuit, the A1 port of the first three-way valve 51 is closed, the B1 port and the C1 port are opened, and the PTC heater 15 works. When the auxiliary heating circuit jointly bears the heat load with the engine cooling water waste heat recovery circuit, the heating circuit does not work at this time, and one of the second water pump 42 and the third water pump 43 can not work. When the auxiliary heating circuit and the first heat storage circuit jointly bear the heat load, the heat pump system does not work at this time, and one of the second water pump 42 and the third water pump 43 can not work.

[0050] The battery heating circuit comprises the PTC heater 15, the third water pump 43 and the power battery 17 connected in sequence, and the battery heating circuit supplies heat for the power battery 17 through the PTC heater 15.

[0051] Specifically, the battery heating circuit is the PTC heater 15, the third water pump 43 and the power battery 17 connected in sequence. When the PTC heater 15 works, the power battery 17 can be heated, and the battery endurance mileage can be guaranteed in cold weather.

[0052] In the application, the heat pump unit can meet the cooling and heating demands of the passenger cabin through the heating circuit and the refrigeration circuit. When the heating circuit of the heat pump unit works, the auxiliary heating circuit can heat the circuit through the PTC heater 15, so that the liquid in the water-cooled condenser 11 is heated, the heating effect of the heating circuit in the heat pump unit is improved, the larger heating demand of the passenger cabin is further met, and the energy consumption of the heating circuit is reduced. In addition, when the engine works, the engine cooling water can heat the liquid in the water-cooled condenser 11 through the engine cooling water waste heat recovery circuit, so that the heat of the engine cooling water is better utilized, and the energy consumption of the heating circuit is reduced. In addition, the engine cooling water can also store the heat of the engine cooling water through the first heat storage circuit and the first heat storage circuit, and release the heat to heat the water-cooled condenser 11 when needed, so as to achieve the effect of efficiently utilizing the heat of the engine cooling water, and further reduce the energy consumption of the heating circuit. The battery heating circuit can heat the power battery 17 by using the PTC heater 15, reduce the endurance attenuation of the power battery 17, and guarantee the endurance mileage of the power battery 17 in the low temperature background.

[0053] In addition, during the operation of the engine cooling water waste heat recovery circuit, the coolant in the PTC heater 15 is heated by the passenger cabin, and the water temperature is high. When the battery heating circuit is connected, the engine cooling water waste heat recovery circuit indirectly heats the power battery 17. Even if the power battery 17 can be directly or indirectly heated by the first heat storage body 33 and / or the engine cooling water, the engine cooling water waste heat energy is fully utilized, and the utilization effect of the waste heat energy is improved.

[0054] In addition, a first shut-off valve 71 is additionally arranged on the auxiliary heating circuit. The first shut-off valve 71 is arranged close to the water-cooled condenser 11. When the passenger cabin has no heating demand and the power battery 17 has a heating demand, the first shut-off valve 71 is controlled to be in a closed state, and the connection between the engine cooling water system 30, the first heat storage body 33, the PTC heater 15 and the power battery heating circuit is interrupted.

[0055] Optionally, the heat pump system further comprises a first control unit. The first control unit is configured to: when the vehicle has a heating demand, the priority of the heating operation is the engine cooling water waste heat recovery circuit, the first heat utilization circuit, the heating circuit and the auxiliary heating circuit in sequence. It can be understood that the priority of the heating operation refers to the priority of the corresponding circuit opened in sequence when heating is needed.

[0056] When the engine is in the internal circulation mode or the passenger vehicle is operated in the EV mode, the third valve is opened, and only the first heat utilization circuit bears the heat load of the passenger cabin. When the heat capacity of the first heat storage body 33 is insufficient to bear the heat load, the heating circuit in the heat pump unit and the first heat storage body 33 are opened for double-heat-source complementary heating. When the heat storage material in the first heat storage body 33 is completely solidified in the heat storage area and cannot perform heat exchange, the third valve is closed, and only the heating circuit in the heat pump unit is used for heating. If the heating circuit alone cannot bear the heat load, the A1 port of the first three-way valve 51 is closed, and the auxiliary heating circuit and the heating circuit are used to bear the total heat load. That is, when the engine is not working, the engine cooling water waste heat recovery circuit can be defaulted to be not opened. The waste heat energy of the engine cooling water is fully utilized before the PTC heater 15 is used for heating, which can reduce the heating energy consumption as much as possible and improve the vehicle range.

[0057] Optionally, the heat pump system further comprises a headlamp waste heat recovery circuit, the headlamp waste heat recovery circuit comprising a second heat storage circuit and a second heat utilization circuit, the second heat storage circuit comprising a second heat storage body 20, a fourth water pump 44 and a headlamp system 22 connected in sequence, and the second heat storage circuit being configured to store heat of the headlamp into the second heat storage body 20; the second heat utilization circuit comprising the second heat storage body 20, a PTC heater 15, a third water pump 43, a power battery 17 and a third three-way valve 53 connected in sequence, and the second heat utilization circuit being configured to supply heat of the second heat storage body 20 to the power battery 17, and the second heat utilization circuit being connected to the battery heating circuit through the third three-way valve 53.

[0058] Specifically, the second heat storage circuit comprises the second heat storage body 20, the fourth water pump 44 and the headlamp system 22 connected in sequence, and the second heat utilization circuit comprises the second heat storage body 20, the PTC heater 15, the third water pump 43, the power battery 17 and the third three-way valve 53 connected in sequence. The second heat storage body 20 comprises a first passage and a second passage which can conduct heat to each other, the first passage is located at a heat storage area, and the second passage is located at a heat exchange area. The first passage is located on the second heat storage circuit, and the second passage is located on the second heat utilization circuit. The first passage of the second heat storage body 20 is arranged as a coil pipe to increase the heat exchange area. The partition plate between the heat storage area and the heat exchange area is made of copper or a material with a higher thermal conductivity. The heat storage area where the first passage is located can store heat of the headlamp, and the heat exchange area is configured to supply heat using the stored waste heat.

[0059] The third three-way valve 53 comprises three communication ports A3, B3 and C3, the A3 port has only two states of opening and closing, and the B3 and C3 ports can be adjusted from 0% to 100%. The A3 and B3 ports of the third three-way valve 53 are connected to the battery heating circuit, the A3 port is close to the power battery 17, the B3 port is close to the PTC heater 15, and the C3 port is connected to the second passage of the second heat storage body 20.

[0060] The heat generated by the headlamp system 22 when working can be stored in the second heat storage body 20 and used for heating the power battery 17, thereby improving the waste heat utilization efficiency and further solving the heating problem of the battery. On the basis of the engine cooling water waste heat recovery circuit and the heat pump unit, the double heat storage bodies and the PTC heater 15 are used as auxiliary heat sources, and the multiple heat sources are added to the passenger compartment and the power battery 17, thereby solving the heating problem under different environmental temperatures and improving the winter driving endurance of the power battery 17. In addition, the design of the double heat storage bodies facilitates flexible arrangement in the engine compartment and improves the utilization rate of the engine compartment space. The first heat storage body 33 and the second heat storage body 20 can both indirectly heat the power battery 17 by heating the water before the PTC heater 15. The first heat storage body 33 and the second heat storage body 20 each has its own function, and both of them can directly or indirectly participate in the heating of the passenger compartment and the power battery 17.

[0061] Therefore, in summary, the power battery 17 can have the first heat storage body 33, the engine cooling water system 30, the second heat storage body 20, and the PTC multi-heat source heating.

[0062] Optionally, the heat pump system further comprises a second control unit, and the second control unit is configured to adjust the heating degree of the power battery 17 by the second heat utilization circuit and the battery heating circuit by controlling the opening degree of the third three-way valve 53, so as to ensure the stability and controllability of the heating process of the power battery 17.

[0063] Optionally, the heat pump system further comprises a low-temperature heat dissipation circuit, and the low-temperature heat dissipation circuit comprises the headlamp system 22, the fourth three-way valve 54, the low-temperature radiator 21, and the fourth water pump 44 which are connected in series, and the low-temperature heat dissipation circuit is connected with the headlamp waste heat recovery circuit through the fourth three-way valve 54, and the low-temperature heat dissipation circuit is configured to dissipate heat of the headlamp system 22 through the low-temperature radiator 21.

[0064] Specifically, the fourth three-way valve 54 comprises three communication ports A4, B4, and C4, the B4 port of the fourth three-way valve 54 has only two states of opening and closing, and the A4 port and the C4 port can be adjusted from 0% to 100%. The A4 port and the B4 port of the fourth three-way valve 54 are located on the second heat storage circuit, the B4 port is located close to the headlamp system 22, the A4 port is located close to the first pipeline of the second heat storage body 20, and the C4 port is located close to the low-temperature radiator 21.

[0065] Optionally, the heat pump system further comprises a third control unit, and the third control unit is configured to adjust the heat storage degree of the second heat storage circuit and the heat dissipation degree of the low-temperature heat dissipation circuit by controlling the opening degree of the fourth three-way valve 54. The low-temperature heat dissipation circuit can be opened alone, that is, when the B4 port and the C4 port are opened and the A4 port is closed, the low-temperature radiator 21 can dissipate heat of the headlamp system 22 in a liquid cooling mode, the heat in the headlamp system 22 is stored in the second heat storage body 20 under the premise of ensuring the heat dissipation performance of the headlamp, and the headlamp system 22 can maintain a good working temperature.

[0066] Specifically, the opening degree of the A4 port and the C4 port can be adjusted according to the heat dissipation demand of the headlamp system 22, when the heat generated by the headlamp system 22 exceeds the storage speed of the second heat storage body 20 or the heat capacity of the second heat storage body 20 is full, the heat of the headlamp system 22 can be stored and part of the heat energy can be dissipated by opening the C4 port, the flow of heat storage and heat dissipation is controlled, and the heat dissipation performance of the headlamp system 22 is ensured.

[0067] Optionally, the headlamp waste heat recovery circuit further comprises the motor system 23 which is arranged in series with the headlamp system 22, and the second heat storage circuit is further configured to store heat of the motor in the second heat storage body 20.

[0068] Specifically, the headlamp system 22 and the motor system 23 are connected in series, and in other embodiments, the headlamp system 22 and the motor system 23 can be connected in parallel, and the opening degree of the valve in the parallel pipeline is adjusted. Thus, the heat generated by the motor in the motor system 23 can be stored and utilized, improving energy utilization.

[0069] Optionally, the heat pump system further comprises a high-temperature heat dissipation circuit, the high-temperature heat dissipation circuit comprising the engine cooling water system 30, a fourth valve, a high-temperature radiator 32, the water-cooled condenser 11, the PTC heater 15, a third water pump 43, a C1 port, an A1 port of the first three-way valve 51, and a second water pump 42 connected in sequence, the high-temperature heat dissipation circuit being used for dissipating heat for the engine cooling water.

[0070] Specifically, the high-temperature heat dissipation circuit comprises the engine cooling water system 30, the fourth valve, the high-temperature radiator 32, the water-cooled condenser 11, the PTC heater 15, the third water pump 43, the C1 port, the A1 port of the first three-way valve 51, and the second water pump 42 connected in sequence. When the temperature of the engine cooling water is high, the high-temperature radiator 32 is enabled by opening the fourth valve, so as to reduce the temperature of the engine cooling water, thereby ensuring the cooling performance of the engine cooling water.

[0071] Optionally, the heat pump system further comprises a fourth control unit, the fourth control unit being used for: adjusting the flow of the engine cooling water distributed in the engine cooling water waste heat recovery circuit, the first heat storage circuit, and the high-temperature heat dissipation circuit by controlling the opening degree of the first valve, the second valve, and the fourth valve; when the engine cooling water exceeds the heat load and the engine cooling performance is insufficient, if the heat absorption efficiency of the first heat storage body 33 is greater than the heat dissipation efficiency of the high-temperature radiator 32, the opening degree of the second valve is increased until the first heat storage body 33 is full of heat capacity; if the heat absorption efficiency of the first heat storage body 33 is less than or equal to the heat dissipation efficiency of the high-temperature radiator 32, the second valve is closed and the opening degree of the fourth valve is increased.

[0072] Specifically, when the engine cooling water is sufficient to bear the heat load of the passenger cabin and the power battery 17, if the first heat storage body 33 has a small residual heat capacity and the total heat load is small, the opening of the second valve is appropriately increased, and the openings of the fourth valve and the first valve are appropriately reduced, so as to increase the heat storage flow and reduce the heating and heat dissipation flow. When the first heat storage body 33 has a large residual heat capacity and the total heat load is small, the openings of the first valve and the second valve are appropriately reduced, and the opening of the fourth valve is appropriately increased, so as to increase the heat dissipation flow and reduce the heating and heat storage flow. When the heat load is large, if the heat capacity of the first heat storage body 33 is not full or reaches 90%, the fourth valve can be closed first, and the heat dissipation flow is reduced to zero. According to the engine cooling water temperature and the working condition of other circuits, the openings of the first valve, the second valve and the fourth valve are adjusted, so as to balance the cooling performance of the engine cooling water and the utilization performance of the waste heat of the engine cooling water, improve the energy utilization efficiency and the reliability of the energy efficient utilization. It should be noted that the heat absorption efficiency of the first heat storage body 33 and the heat dissipation efficiency of the high-temperature radiator 32 are related to the manufacturing materials thereof. After the physical structure of the first heat storage body 33 and the high-temperature radiator 32 is determined, the relationship between the heat absorption efficiency of the first heat storage body 33 and the heat dissipation efficiency of the high-temperature radiator 32 can be determined.

[0073] Optionally, the heat pump system further comprises an exhaust waste heat recovery circuit, the exhaust waste heat recovery circuit comprising the first heat storage body 33, the exhaust gas system 34, the first water pump 41 and the fifth valve connected in sequence, and the exhaust waste heat recovery circuit is used for storing the heat of the exhaust gas into the first heat storage body 33.

[0074] Specifically, the exhaust waste heat recovery circuit comprises the first heat storage body 33, the exhaust gas system 34, the first water pump 41 and the fifth valve connected in sequence. It can be understood that the first heat storage body 33 further comprises a third pipeline, and the third pipeline is located in a heat storage area, that is, the first heat storage body 33 has two heat storage areas and one heat exchange area, and the two heat storage areas are arranged on both sides of the heat exchange area. The first heat storage body 33 can store the waste heat of the exhaust gas of the exhaust gas system 34, and then the waste heat is reused through the first heat utilization circuit, so as to improve the utilization rate of the waste energy.

[0075] The exhaust tail pipe water jacket in the exhaust gas system 34 only wraps between the exhaust tail pipe and the heated component, and considering that there is no exhaust tail pipe heat recovery demand in summer, the exhaust tail pipe water jacket is a detachable optional accessory.

[0076] Optionally, the first valve, the second valve, the third valve, the fourth valve and the fifth valve are collectively integrated as an eight-way valve 31, the eight-way valve 31 includes eight communication ports A8, B8, C8, D8, E8, F8, G8 and H8, the D8 port is connected with the A8 port, the B8 port and the C8 port respectively and can independently adjust the opening degree, and respectively constitutes the second valve, the fourth valve and the first valve; the E8 port is connected with the H8 port, and constitutes the third valve; the G8 port is connected with the F8 port, and constitutes the fifth valve.

[0077] Specifically, after the D8 port is connected with the engine cooling water outlet, the D8 port is connected with the A8 port, the B8 port and the C8 port respectively, and controls the water flow of the heat storage of the engine cooling water, the heat dissipation of the engine and the heat utilization of the engine cooling water respectively; the E8 port is connected with the H8 port, and the H8 port can control the heat supply flow of the first heat storage body 33; the F8 port is connected with the G8 port, and the G8 port controls the start and stop of the exhaust gas waste heat recovery loop. The eight-way valve 31 is adopted to flexibly distribute the flow of the engine cooling water for heat storage, heat dissipation and heat supply, so as to reduce the number of valves and facilitate control.

[0078] Optionally, the heat pump system further includes a first battery heat dissipation loop, the first battery heat dissipation loop includes a battery cooler 16, a gas-liquid separator 14, a compressor 10, a water-cooled condenser 11, a second stop valve 72, an outside heat exchanger 12 and a third expansion valve 63 connected in sequence, the battery cooler 16 is further arranged in the battery heating loop in series, and the first battery heat dissipation loop exchanges heat with the battery heating loop through the battery cooler 16.

[0079] Specifically, the first battery heat dissipation loop includes the battery cooler 16, the gas-liquid separator 14, the compressor 10, the water-cooled condenser 11, the second stop valve 72, the outside heat exchanger 12 and the third expansion valve 63 connected in sequence. It can be understood that the battery cooler 16 and the third expansion valve 63 are connected in series and then commonly connected in parallel to the two ends of the third stop valve 73, that is, connected in parallel to the refrigeration circuit and the heating circuit, and exchange heat with the power battery 17. The third expansion valve 63 is located close to the outside heat exchanger 12, and the battery cooler 16 is located close to the gas-liquid separator 14. Through the refrigeration circuit of the heat pump unit, the power battery 17 can be cooled and dissipated, at this time, the PTC heater 15 does not work, and the C3 port of the third three-way valve 53 is in a completely closed state. Among them, the battery cooler 16 (Chiller) can absorb the heat of the power battery 17 through heat exchange, so as to achieve the effect of cooling and dissipating heat for the power battery 17.

[0080] Optionally, the heat pump system further comprises a second battery cooling loop, the second battery cooling loop comprising the battery heating temperature control radiator 18, the power battery 17, the PTC heater 15, a third water pump 43 and a second three-way valve 52, the second battery cooling loop being connected with the battery heating loop through the second three-way valve 52, and the second battery cooling loop being configured to adjust the heating temperature of the power battery 17 by adjusting the opening degree of the second three-way valve 52.

[0081] Specifically, the second three-way valve 52 comprises three communication ports, namely an A2 port, a B2 port and a C2 port, the A2 port of the second three-way valve 52 having only two states, i.e., open and closed, and the B2 port and the C2 port being adjustable from 0% to 100%. The second battery cooling loop comprises the battery heating temperature control radiator 18, the power battery 17, the PTC heater 15, the third water pump 43 and the A2 port and the B2 port of the second three-way valve 52 in sequence. During the process of auxiliary heating of the passenger compartment by the engine cooling water, the water temperature before the PTC heater 15 is relatively high due to the influence of the heating of the passenger compartment, and therefore the battery heating temperature control radiator 18 is provided. By adjusting the opening degrees of the B2 port and the C2 port, i.e., controlling the water flow through the battery heating temperature control radiator 18 and the bypass thereof in parallel, the water temperature flowing into the power battery 17 is controlled to avoid the water temperature of the heated battery being too high. The second three-way valve 52 controls the water temperature flowing into the power battery 17 to avoid the liquid temperature of the heated power battery 17 being too high to cause damage to the battery.

[0082] Optionally, the heat pump system further comprises a fifth control unit, the fifth control unit being configured to, when the battery heating loop is working, control the heating degree of the power battery 17 by controlling the opening degrees of the B2 port and the C2 port of the second three-way valve 52. Specifically, the opening degrees of the B2 port and the C2 port can be adjusted reasonably and appropriately by obtaining the current temperature condition of the power battery 17 and the heating condition of each loop to ensure that the power battery 17 is in a better temperature condition.

[0083] Optionally, the heat pump system further comprises a sixth control unit, the sixth control unit being configured to, when the first battery cooling loop is working, control the opening degree of the B2 port of the second three-way valve 52 to close the second battery cooling loop, i.e., to close the B2 port. When the first battery cooling loop is working, the power battery 17 is cooled, and the liquid temperature in the battery heating loop is relatively high. Closing the second battery cooling loop can prevent the battery heating temperature control radiator 18 from absorbing heat from the outside to affect the cooling effect of the power battery 17.

[0084] The first control unit, the second control unit, the third control unit, the fourth control unit, the fifth control unit and the sixth control unit can be integrated to form a total control unit.

[0085] The first expansion valve 61, the second expansion valve 62 and the third expansion valve 63 are all electronic expansion valves or thermal expansion valves. It should be noted that the connection order between the components in each circuit can be appropriately adjusted without affecting the function of the circuit, for example, the installation position of each water pump is more flexible. The first heat storage body 33 and the second heat storage body 20 are both organic phase change materials mainly composed of paraffin. When the heat fluid passes through the heat storage body, the phase change material melts and absorbs heat. When the cold fluid passes through the heat storage body, the phase change material solidifies and releases heat, thereby realizing heat storage utilization.

[0086] When the heat pump system is in the cooling mode, that is, the cooling circuit of the heat pump unit works, the C1 port of the first three-way valve 51 and the C3 port of the third three-way valve 53 are both closed, and only the cooling circuit bears the heat load of the passenger compartment. When the heat pump system is in the heating mode, that is, the heating circuit of the heat pump unit works, the auxiliary heating circuit, the engine cooling water waste heat recovery circuit, the first heat utilization circuit and the headlamp waste heat recovery circuit can jointly bear the heat load of the passenger compartment and the power battery 17.

[0087] It should be noted that when the first heat storage circuit is opened and the auxiliary heating circuit is opened alone, the liquid flow direction of the idle section waterway corresponding to the B1 port of the first three-way valve 51 is opposite, but since there is no case where the first heat storage circuit and the auxiliary heating circuit are opened simultaneously in the mode setting, it is reasonable that the liquid flow direction of the idle section waterway corresponding to the B1 port of the first three-way valve 51 is opposite in different working conditions.

[0088] The embodiment of the present application also provides a vehicle comprising the hybrid vehicle heat storage type heat pump system described in any of the above embodiments.

[0089] Optionally, specific examples in the present embodiment can refer to the examples described in the above embodiments and optional implementation manners, and the present embodiment will not be described here again.

[0090] From the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be realized by means of software and a general hardware platform, and of course, it can also be realized by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disc), and includes a plurality of instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device) to execute the method described in each embodiment of the present application.

[0091] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0092] In some embodiments of the present application, it should be understood that the disclosed technology can be implemented in other ways. Among them, the above-mentioned system embodiments are only illustrative, for example, the division of the modules can be a logical function division, and actual implementation can have another division mode, for example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed modules can be through some interface, indirect coupling or communication connection between modules, which can be electrical or other forms.

[0093] The modules described as separate components can or can not be physically separated, and the components displayed as modules can or can not be physical modules, that is, they can be located in one place, or they can be distributed to multiple modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the present embodiment.

[0094] In addition, the functional modules in each embodiment of the present application can be integrated into a processing module, or each module can exist physically, or two or more modules can be integrated into one module. The integrated module can be realized in the form of hardware or in the form of a software function module.

[0095] The integrated module, if realized in the form of a software function module and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0096] The above is only the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A hybrid vehicle thermal storage heat pump system, characterized by, The heat pump system comprises: a heat pump unit, comprising a heating circuit and a refrigeration circuit, the heating circuit comprising a compressor, a water-cooled condenser, a first expansion valve, an outside heat exchanger, a third stop valve and a gas-liquid separator, the heating circuit absorbing heat from the outside through the outside heat exchanger, the refrigeration circuit comprising the compressor, the water-cooled condenser, a second stop valve, the outside heat exchanger, a second expansion valve, an inside heat exchanger and the gas-liquid separator, the refrigeration circuit absorbing heat through the inside heat exchanger to refrigerate; an auxiliary heating circuit, comprising a PTC heater, a third water pump and the water-cooled condenser, the heating circuit supplying heat to the water-cooled condenser through the PTC heater; an engine cooling water waste heat recovery circuit, comprising an engine cooling water system, a first valve, the water-cooled condenser, the PTC heater, the third water pump, a first three-way valve and a second water pump, the heating circuit being connected to the engine cooling water waste heat recovery circuit through the first three-way valve, the engine cooling water waste heat recovery circuit supplying heat to the water-cooled condenser through engine cooling water; a first heat storage circuit, comprising the engine cooling water system, a second valve, a first heat storage body, the first three-way valve and the second water pump, the first heat storage circuit being used to store heat of engine cooling water in the first heat storage body; a first heat utilization circuit, comprising the first heat storage body, the water-cooled condenser, the PTC heater, the third water pump, the first three-way valve, the second water pump and a third valve, the first heat utilization circuit being used to supply heat of the first heat storage body to the water-cooled condenser; a battery heating circuit, comprising the PTC heater, the third water pump and a power battery, the battery heating circuit supplying heat to the power battery through the PTC heater.

2. The hybrid vehicle thermal storage heat pump system according to claim 1, characterized by, The heat pump system further comprises a first control unit, which is used to: when the vehicle has a heating demand, the priority of heating operation is the engine cooling water waste heat recovery circuit, the first heat utilization circuit, the heating circuit and the auxiliary heating circuit in sequence.

3. The hybrid vehicle thermal storage heat pump system of claim 1, wherein, The heat pump system further comprises a headlamp waste heat recovery circuit, the headlamp waste heat recovery circuit comprising a second heat storage circuit and a second heat utilization circuit, the second heat storage circuit comprising a second heat storage body, a fourth water pump and a headlamp system, the second heat storage circuit being used to store heat of the headlamp in the second heat storage body, the second heat utilization circuit comprising the second heat storage body, the PTC heater, the third water pump, the power battery and a third three-way valve, the second heat utilization circuit being used to supply heat of the second heat storage body to the power battery, the second heat utilization circuit being connected to the battery heating circuit through the third three-way valve.

4. The hybrid vehicle thermal storage heat pump system according to claim 3, wherein The heat pump system further comprises a low-temperature heat dissipation circuit comprising the headlamp system, a fourth three-way valve, a low-temperature radiator and the fourth water pump connected in sequence, the low-temperature heat dissipation circuit being connected with the headlamp waste heat recovery circuit through the fourth three-way valve, and the low-temperature heat dissipation circuit being configured to dissipate heat of the headlamp system through the low-temperature radiator.

5. The hybrid vehicle thermal storage heat pump system of claim 3, wherein, The headlamp waste heat recovery circuit further comprises a motor system arranged in series with the headlamp system, and the second heat storage circuit is further configured to store heat of the motor into the second heat storage body.

6. The hybrid vehicle thermal storage heat pump system of claim 1, wherein, The heat pump system further comprises a high-temperature heat dissipation circuit comprising the engine cooling water system, a fourth valve, a high-temperature radiator, the water-cooled condenser, the PTC heater, the third water pump, the first three-way valve and the second water pump connected in sequence, the high-temperature heat dissipation circuit being configured to dissipate heat of the engine cooling water.

7. The hybrid vehicle thermal storage heat pump system of claim 6, wherein, The heat pump system further comprises a fourth control unit configured to: adjust flow rates of the engine cooling water distributed in the engine cooling water waste heat recovery circuit, the first heat storage circuit and the high-temperature heat dissipation circuit respectively by controlling opening degrees of the first valve, the second valve and the fourth valve; when the engine cooling water exceeds the heat load and the engine cooling performance is insufficient, if the heat absorption efficiency of the first heat storage body is greater than the heat dissipation efficiency of the high-temperature radiator, the opening degree of the second valve is increased until the first heat storage body is fully charged; if the heat absorption efficiency of the first heat storage body is less than or equal to the heat dissipation efficiency of the high-temperature radiator, the second valve is closed and the opening degree of the fourth valve is increased.

8. The hybrid vehicle thermal storage heat pump system of claim 6, wherein, The heat pump system further comprises an exhaust waste heat recovery circuit comprising the first heat storage body, an exhaust gas system, a first water pump and a fifth valve connected in sequence, the exhaust waste heat recovery circuit being configured to store heat of the exhaust gas into the first heat storage body.

9. The hybrid vehicle thermal storage heat pump system of claim 8, wherein, The first valve, the second valve, the third valve, the fourth valve and the fifth valve are collectively integrated into an eight-way valve comprising eight communication ports A8, B8, C8, D8, E8, F8, G8 and H8, the D8 port being connected with the A8 port, the B8 port and the C8 port and independently adjustable in opening degree, and constituting the second valve, the fourth valve and the first valve respectively; the E8 port being connected with the H8 port and constituting the third valve; and the G8 port being connected with the F8 port and constituting the fifth valve.

10. The hybrid vehicle thermal storage heat pump system of claim 1, wherein, The heat pump system further comprises a first battery heat dissipation circuit comprising a battery cooler, the gas-liquid separator, the compressor, the water-cooled condenser, the second stop valve, the vehicle-external heat exchanger and a third expansion valve connected in sequence, the battery cooler being further arranged in series in the battery heating circuit, and the first battery heat dissipation circuit and the battery heating circuit being heat-exchanged through the battery cooler.

11. The hybrid vehicle thermal storage heat pump system of claim 10, wherein, The heat pump system further comprises a second battery heat dissipation circuit, the second battery heat dissipation circuit comprising a battery heating temperature control radiator, the power battery, the PTC heater, a third water pump and a second three-way valve, the second battery heat dissipation circuit being connected with the battery heating circuit through the second three-way valve, and the second battery heat dissipation circuit being used for adjusting the heating temperature of the power battery by regulating the opening degree of the second three-way valve.

12. The hybrid vehicle thermal storage heat pump system of claim 11, wherein, The heat pump system further comprises a sixth control unit, the sixth control unit being used for closing the second battery heat dissipation circuit by controlling the opening degree of the second three-way valve when the first battery heat dissipation circuit is working.

13. A vehicle characterized by comprising: The heat pump system comprises the heat pump system of any one of claims 1 to 12. The heat pump system comprises the heat pump system of any one of claims 1 to 12.

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