Method, apparatus, system, computer program product and vehicle for providing hot water

Abstract

The invention provides a method, equipment, system, computer program product and vehicle for providing hot water, and the system for providing hot water comprises a system to be cooled, a water supply loop for providing hot water, and a first heat exchanger arranged on the water supply loop. Wherein the first heat exchanger is used for transferring waste heat of the to-be-cooled system to the water supply loop, and the to-be-cooled system comprises at least one of a battery system and an electric drive system. In this way, the waste heat of the system to be cooled in the vehicle can be used for heating water in the water supply loop, an electric water heater does not need to be additionally arranged, and energy can be effectively saved.

Description

Technical Field

[0001] The present application relates to the field of energy-saving technology, and in particular to a method, device, system, computer program product and vehicle for providing hot water. Background Art

[0002] With the continuous expansion of vehicle functions, vehicles are no longer just a means of transportation, but have become an important space for people to live and rest. Therefore, providing hot water for people's daily use has become an important function that vehicles need to have. At present, the realization of this important function mainly depends on the electric water heater installed on the vehicle, but the installation of electric water heaters will increase additional power consumption, resulting in energy waste. Summary of the invention

[0003] In view of this, the present application proposes a method, device, system, computer program product and vehicle for providing hot water to solve the problem in the prior art that providing hot water for people's daily use by installing an electric water heater on the vehicle will increase additional electricity consumption and lead to energy waste.

[0004] The technical solutions proposed in this application are as follows:

[0005] In a first aspect, an embodiment of the present application provides a system for providing hot water, comprising: a system to be cooled, a water supply circuit for providing hot water, and a first heat exchanger arranged on the water supply circuit; the first heat exchanger is used to transfer waste heat of the system to be cooled to the water supply circuit; the system to be cooled comprises at least one of a battery system and an electric drive system.

[0006] In a second aspect, an embodiment of the present application provides a vehicle, comprising a system for providing hot water as described in any one of the above.

[0007] In a third aspect, an embodiment of the present application provides a method for providing hot water, which is applied to a system for providing hot water, wherein the system for providing hot water includes a system to be cooled, a water supply circuit for providing hot water, and a first heat exchanger disposed on the water supply circuit; the method includes:

[0008] Obtain a water heating instruction; the water heating instruction includes a set water temperature during a set water use time period; control the first heat exchanger to transfer waste heat from the system to be cooled to the water supply circuit, so that the temperature of hot water in the water supply circuit meets the set water temperature during the set water use time period; the system to be cooled includes at least one of a battery system and an electric drive system.

[0009] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising: a memory and a processor; wherein the memory is used to store programs; and the processor is used to implement any of the methods described above by running the programs in the memory.

[0010] In a fifth aspect, an embodiment of the present application provides a computer program product, which includes a computer program or computer instructions. When the computer program or computer instructions are executed by a processor, any of the methods described above is implemented.

[0011] The hot water providing system proposed in the present application includes a system to be cooled, a water supply circuit for providing hot water, and a first heat exchanger arranged on the water supply circuit. The first heat exchanger is used to transfer the waste heat of the system to be cooled to the water supply circuit, and the system to be cooled includes at least one of a battery system and an electric drive system. In this way, the waste heat of the system to be cooled in the vehicle can be used to heat the water in the water supply circuit, without the need for an additional electric water heater, which can effectively save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0013] Figure 1 It is a structural schematic diagram of a system for providing hot water provided in one embodiment of the present application.

[0014] Figure 2 It is a structural schematic diagram of a system for providing hot water provided in another embodiment of the present application.

[0015] Figure 3 It is a structural schematic diagram of a system for providing hot water provided in another embodiment of the present application.

[0016] Figure 4 It is a structural schematic diagram of a system for providing hot water provided in another embodiment of the present application.

[0017] Figure 5 It is a structural schematic diagram of a system for providing hot water provided in another embodiment of the present application.

[0018] Figure 6 It is a structural schematic diagram of a system for providing hot water provided in another embodiment of the present application.

[0019] Figure 7 It is a structural schematic diagram of a system for providing hot water provided in another embodiment of the present application.

[0020] Figure 8 It is a structural schematic diagram of a system for providing hot water provided in another embodiment of the present application.

[0021] Fig. 9 It is a schematic diagram of the electrical control structure of the water heating process provided in another embodiment of the present application.

[0022] Fig.10 It is a structural schematic diagram of a system for providing hot water provided in another embodiment of the present application.

[0023] Fig.11 It is a flow chart of a method for providing hot water provided in an embodiment of the present application.

[0024] Fig.12 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0025] Fig.13 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] With the continuous expansion of vehicle functions, vehicles are no longer just a means of transportation, but have become an important space for people to live and rest. For example, when camping or traveling long distances, people can cook, wash, etc. in the car after resting, which leads to an increasing demand for hot water. Being able to provide hot water for people's daily use has become an important function that vehicles need to have.

[0028] At present, electric water heaters installed on vehicles are mainly used to provide hot water for users. Although the solution of installing electric water heaters is simpler, the energy conversion rate is low and it will increase additional electricity consumption, resulting in energy waste.

[0029] Based on this, the present application proposes a method, device, system, computer program product and vehicle for providing hot water. The technical solution utilizes the waste heat of the cooling system in the vehicle to heat the water in the water supply circuit, thereby achieving the effect of effectively saving energy while providing hot water to users.

[0030] This embodiment provides a system for providing hot water. Figure 1 Schematic diagram of a hot water supply system provided in an embodiment of the present application. Figure 1 As shown, the system 1 for providing hot water includes a system to be cooled 2 , a water supply loop 10 , and a first heat exchanger 11 arranged on the water supply loop 10 .

[0031] The water supply circuit 10 is a circuit for providing hot water. The water in the water supply circuit 10 can be circulated and heated in the water supply circuit 10 to obtain hot water of the temperature required by the user. A water intake valve can be provided on the water supply circuit so that the user can use the water in the water supply circuit 10 when the water intake valve is opened. The water intake valve can be connected to a faucet, a shower head, etc., which is not set in this embodiment.

[0032] The first heat exchanger 11 is a device that transfers part of the heat of the hot fluid to the cold fluid. The first heat exchanger 11 is arranged on the water supply circuit 10. In this embodiment, the function of the first heat exchanger 11 is to transfer the waste heat of the system to be cooled 2 in the vehicle to the water supply circuit 10, so as to heat the water in the water supply circuit 10.

[0033] The system to be cooled 2 refers to a system that needs to be cooled down at a high temperature in order to avoid affecting the normal operation of the vehicle, such as the battery system and electric drive system of the vehicle. The electric drive system may include a direct current-direct current (DCDC) converter system, an on-board charger (OBC) system, an electric motor (E-Motor) system, etc.

[0034] More specifically, if Figure 1 As shown, the system to be cooled 2 includes a cooling circuit and a device to be cooled, the device to be cooled is arranged on the cooling circuit, a coolant is arranged in the cooling circuit and the cooling circuit passes through the first heat exchanger 11. The cooling circuit is used to perform heat exchange with the device to be cooled to remove the heat in the device to be cooled, so that the device to be cooled is cooled, and then the cooling circuit of the system to be cooled 2 performs heat exchange with the water supply circuit 10 at the first heat exchanger 11, and transfers the heat of the device to be cooled to the water supply circuit 10.

[0035] In the above embodiment, when the system to be cooled 2 is cooled, the waste heat generated can be transferred to the water supply loop 10 through the first heat exchanger 11. In this way, the waste heat generated when the system to be cooled 2 is cooled can be used to heat the water in the water supply loop 10. There is no need for an additional electric water heater, so no additional electricity is consumed, which can effectively save energy.

[0036] As an optional implementation, Figure 2 As shown, in another embodiment of the present application, a battery system 20 includes a battery 200, a battery temperature sensor 201 for detecting the temperature of the battery 200, and a battery cooling circuit 202 for cooling the battery 200. That is, the device to be cooled in the above embodiment is the battery 200, and the cooling circuit is the battery cooling circuit 202.

[0037] Among them, the battery 200 is arranged on the battery cooling circuit 202, and a battery coolant is arranged in the battery cooling circuit 202. The battery coolant is water or other cooling media, which is not limited in this embodiment. The battery cooling circuit 202 is used to perform heat exchange with the battery 200, take away the heat of the battery 200, and achieve the purpose of cooling down the battery 200. The battery temperature sensor 201 is used to detect the temperature of the battery 200. The embodiment of the present application does not limit the setting position of the battery temperature sensor 201, as long as the battery temperature sensor 201 can collect the temperature of the battery 200. In some embodiments, the battery temperature sensor 201 is set at the coolant outlet of the battery 200, that is, Figure 2 The location shown in .

[0038] The first heat exchanger 11 includes a battery waste heat heat exchanger 110, which is used to transfer the waste heat generated when the battery cooling circuit 202 cools the battery 200 to the water supply circuit 10, and the battery waste heat heat exchanger 110 is connected to the water supply circuit 10 through the first valve 12. When the first valve 12 is turned on, the battery waste heat heat exchanger 110 is connected to the water supply circuit 10, and can perform the task of heat exchange, and transfer the waste heat generated when the battery cooling circuit 202 cools the battery 200 to the water supply circuit 10; when the first valve 12 is not turned on, the battery waste heat heat exchanger 110 is not connected to the water supply circuit 10, and cannot perform the task of heat exchange.

[0039] The system 1 for providing hot water in this embodiment further includes a first control unit 131 . Specifically, the first control unit 131 is electrically connected to the battery temperature sensor 201 and the first valve 12 , respectively.

[0040] The battery temperature sensor 201 can detect the temperature of the battery 200 and send the detected temperature data to the first control unit 131. When the temperature of the battery 200 is high and needs to be cooled, that is, when the first control unit 131 of this embodiment detects that the temperature of the battery 200 is greater than the first target temperature, the first valve 12 is controlled to be turned on so that the battery waste heat exchanger 110 can be connected to the water supply circuit 10 to perform the task of heat exchange. At the same time, when the temperature of the battery 200 is high and needs to be cooled, the battery cooling circuit 202 also starts to operate, and the battery cooling circuit 202 performs heat exchange with the battery 200 to take away the heat of the battery 200.

[0041] The battery cooling circuit 202 that takes away the heat from the battery 200 exchanges heat with the water supply circuit 10 at the battery waste heat exchanger 110 , and the battery waste heat exchanger 110 transfers the heat of the battery cooling circuit 202 to the water supply circuit 10 .

[0042] It should be noted that the above-mentioned first target temperature can be set according to actual conditions, and this embodiment does not limit it.

[0043] In the above embodiment, the heat generated by the battery 200 is finally transferred to the water supply loop 10 to heat the water in the water supply loop 10. It can be understood that this process can also be regarded as the process of the water supply loop 10 dissipating heat for the battery 200. In this way, the waste heat generated by the battery 200 during cooling can be used to heat the water in the water supply loop 10, and no additional electric water heater is required, which can effectively save energy.

[0044] As an optional implementation, Figure 3 As shown, in another embodiment of the present application, the battery system 20 of the above embodiment includes a battery cooling heat exchanger 203 (Chiller) arranged on the battery cooling loop 202 , and the battery cooling heat exchanger 203 is used to dissipate heat for the battery 200 .

[0045] When the temperature of the battery 200 is high and only using the water supply circuit 10 to dissipate heat for the battery 200 cannot cool the temperature of the battery 200 to a normal temperature, that is, when the temperature of the battery 200 in this embodiment is greater than the second target temperature, it is necessary to enable the above-mentioned battery cooling heat exchanger 203 to enhance the heat dissipation of the battery 200 and ensure that the battery 200 can work normally. The above-mentioned second target temperature is higher than the first target temperature. It should be noted that the second target temperature and the first target temperature can be set according to actual conditions, and this embodiment does not limit it.

[0046] The battery cooling heat exchanger 203 uses the cold source of the air conditioning system to exchange heat with the battery cooling circuit 202, taking away the heat in the battery cooling circuit 202 and accelerating the heat dissipation of the battery 200. Figure 3 As shown, the air conditioning system includes a compressor, an in-vehicle condenser, a first electronic expansion valve, a second electronic expansion valve, an out-vehicle heat exchanger, an evaporator and other equipment. A cooling fan is provided at the out-vehicle heat exchanger to assist in cooling the out-vehicle heat exchanger.

[0047] When the air conditioner is cooling, the compressor compresses the refrigerant into high-temperature refrigerant, and the high-temperature refrigerant is sent to the outdoor heat exchanger. In the outdoor heat exchanger, the high-temperature refrigerant releases heat to the surrounding environment, and then obtains low-temperature refrigerant through the first electronic expansion valve. The low-temperature refrigerant enters the evaporator, where the low-temperature refrigerant absorbs the surrounding heat and evaporates, thereby achieving a cooling effect, and then the refrigerant is sucked into the compressor again to form a cycle; when the air conditioner is dehumidifying, the compressor compresses the refrigerant into high-temperature refrigerant, and the high-temperature refrigerant is sent to the condenser in the car, where it heats the dry and low-temperature air blown out from the evaporator, and then passes through the second electronic expansion valve and is sent to the outdoor heat exchanger, and then passes through the first electronic expansion valve again to obtain low-temperature refrigerant, and the low-temperature refrigerant enters the evaporator, exchanges heat with the air intake air of the air conditioning box at the evaporator, and then is sucked into the compressor again to form a cycle.

[0048] Therefore, during the operation of the air conditioning system, the low-temperature refrigerant can exchange heat with the battery cooling circuit 202 at the battery cooling heat exchanger 203, take away the heat in the battery cooling circuit 202, speed up the heat dissipation of the battery 200, and the refrigerant that has completed the heat exchange is sucked into the compressor to form a cycle. Figure 3 As shown, a first circulation pipeline passing through the battery cooling heat exchanger 203 can be set, and the first end of the first circulation pipeline is connected to the first electronic expansion valve of the air-conditioning system, and the second end of the first circulation pipeline is connected to the compressor of the air-conditioning system, so that the low-temperature refrigerant can pass through the first circulation pipeline and exchange heat with the battery cooling circuit 202 at the battery cooling heat exchanger 203.

[0049] When the air-conditioning system is not working, if it is detected that the temperature of the battery 200 is greater than the second target temperature, in order to speed up the heat dissipation and ensure that the battery 200 can work normally, the compressor can be turned on. The compressor compresses the refrigerant into high-temperature gas, and the gas is sent to the external heat exchanger. In the external heat exchanger, the high-temperature refrigerant releases heat to the surrounding environment, and then obtains low-temperature refrigerant through the first expansion valve. The low-temperature refrigerant exchanges heat with the battery cooling circuit 202 at the battery cooling heat exchanger 203 through the first circulation pipeline, takes away the heat in the battery cooling circuit 202, and speeds up the heat dissipation of the battery 200. The refrigerant that completes the heat exchange is sucked into the compressor to form a cycle.

[0050] It should be noted that the ambient temperature is generally low when the air conditioning system is needed for heating, such as in winter. Under such environmental conditions, the battery 200 can be passively cooled by natural air convection, and the temperature of the battery 200 can be controlled within a suitable temperature range without excess heat recovery.

[0051] In the above embodiment, when the temperature of the battery 200 is high and only using the water supply circuit 10 to dissipate heat for the battery 200 cannot cool the temperature of the battery 200 to a normal temperature, the cold source of the air-conditioning system can be used to accelerate the heat dissipation of the battery 200 to avoid the temperature of the battery 200 being too high.

[0052] As an optional implementation, Figure 4 As shown, in another embodiment of the present application, it is disclosed that the electric drive system 21 of the above embodiment includes an electric drive device 210, an electric drive temperature sensor 211 for detecting the temperature of the electric drive device 210, and an electric drive cooling circuit 212 for cooling the electric drive device 210.

[0053] Among them, the electric drive device 210 is arranged on the electric drive cooling circuit 212, and the electric drive cooling circuit 212 is provided with an electric drive coolant. The electric drive coolant can use water or other cooling media, which is not limited in this embodiment. The electric drive cooling circuit 212 is used to perform heat exchange with the electric drive device 210, take away the heat of the electric drive device 210, and achieve the purpose of cooling down the electric drive device 210. The electric drive temperature sensor 211 is used to detect the temperature of the electric drive device 210. The embodiment of the present application does not limit the setting position of the electric drive temperature sensor 211, as long as the electric drive temperature sensor 211 can collect the temperature of the electric drive device 210. In some embodiments, the electric drive temperature sensor 211 is set at the coolant outlet of the electric drive device 210, that is, Figure 4 The location shown in .

[0054] The first heat exchanger 11 includes an electric drive waste heat exchanger 111, which is used to transfer the waste heat generated when the electric drive cooling circuit 212 cools the electric drive device 210 to the water supply circuit 10, and the electric drive waste heat exchanger 111 is connected to the water supply circuit 10 through the second valve 14. When the second valve 14 is turned on, the electric drive waste heat exchanger 111 is connected to the water supply circuit 10, and can perform the task of heat exchange, and transfer the waste heat generated when the electric drive cooling circuit 212 cools the electric drive device 210 to the water supply circuit 10; when the second valve 14 is not turned on, the electric drive waste heat exchanger 111 is not connected to the water supply circuit 10, and cannot perform the task of heat exchange.

[0055] The system 1 for providing hot water in this embodiment further includes a second control unit 132. It should be noted that the second control unit 132 in this embodiment may be the same control unit as the first control unit 131 in the above embodiment, or may not be the same control unit as the first control unit 131 in the above embodiment, and this is not limited in this embodiment. The second control unit 132 in the above embodiment is electrically connected to the electric drive temperature sensor 211 and the second valve 14 respectively. The electric drive temperature sensor 211 can detect the temperature of the electric drive device 210 and send the detected temperature data to the second control unit 132. When the temperature of the electric drive device 210 is high and needs to be cooled, that is, when the second control unit 132 in this embodiment detects that the temperature of the electric drive device 210 is greater than the third target temperature, the second valve 14 is controlled to be turned on so that the electric drive waste heat exchanger 111 can be connected to the water supply circuit 10 to perform the task of heat exchange. At the same time, when the temperature of the electric drive device 210 is high and needs to be cooled, the electric drive cooling circuit 212 also starts to operate, and the electric drive cooling circuit 212 performs heat exchange with the electric drive device 210 to take away the heat of the electric drive device 210.

[0056] The electric drive cooling circuit 212 that takes away the heat of the electric drive device 210 exchanges heat with the water supply circuit 10 at the electric drive waste heat exchanger 111 , and the electric drive waste heat exchanger 111 transfers the heat of the electric drive cooling circuit 212 to the water supply circuit 10 .

[0057] It should be noted that the third target temperature mentioned above can be set according to actual conditions, and this embodiment does not limit it.

[0058] In some embodiments, the electric drive system 21 further includes a low-temperature radiator, which is disposed at the cooling fan of the air-conditioning system. When the temperature of the electric drive device 210 is high and needs to be cooled, the cooling fan can be started. The cooling fan can accelerate the heat dissipation of the low-temperature radiator, thereby reducing the temperature of the electric drive coolant in the electric drive cooling circuit 212, thereby further reducing the temperature of the electric drive device 210, and preventing the electric drive device 210 from being overheated and affecting the normal operation of the electric drive device 210. More specifically, the cooling fan can be electrically connected to the above-mentioned second control unit 132, and when it is detected that the temperature of the electric drive device 210 is greater than the fourth target temperature, the second control unit 132 can also control the cooling fan to start. The fourth target temperature is greater than the third target temperature, and the third target temperature and the fourth target temperature can be set according to actual conditions, which is not limited in this embodiment.

[0059] In the above embodiment, the heat generated by the operation of the electric drive device 210 is finally transferred to the water supply loop 10 to heat the water in the water supply loop 10. It can be understood that this process can also be regarded as the process in which the water supply loop 10 dissipates heat for the electric drive device 210. In this way, the waste heat generated by the cooling of the electric drive device 210 can be used to heat the water in the water supply loop 10, without the need for an additional electric water heater, which can effectively save energy.

[0060] As an optional implementation, Figure 5 As shown, in another embodiment of the present application, the hot water providing system 1 of the above embodiment further includes a second heat exchanger 15 arranged on the water supply circuit 10 , and the second heat exchanger 15 is used to transfer the waste heat of the air conditioning system 3 in the vehicle to the water supply circuit 10 .

[0061] The second heat exchanger 15 is a device that transfers part of the heat of the hot fluid to the cold fluid. The second heat exchanger 15 is arranged on the water supply circuit 10. In this embodiment, the function of the second heat exchanger 15 is to transfer the heat of the air conditioning system 3 in the vehicle to the water supply circuit 10, so as to heat the water in the water supply circuit 10.

[0062] Whether the air conditioner is cooling, heating or dehumidifying, the compressor is required to compress the refrigerant into a high-temperature refrigerant, and then pass through the evaporator or the condenser in the vehicle to complete the corresponding cooling, heating or dehumidification task. In this embodiment, a part of the high-temperature refrigerant compressed by the compressor can be heat-exchanged with the water supply circuit 10 at the second heat exchanger 15, and the heat is transferred to the water supply circuit 10, and the refrigerant that completes the heat exchange returns to the air conditioning system.

[0063] In some embodiments, the first control unit 131 and the second control unit 132 are the same control unit, and the first control unit 131 and the second control unit 132 are defined as a control unit 13. The control unit 13 can be electrically connected to the compressor. When the air conditioning system is not working, if the user needs hot water, the control unit 13 can also control the compressor to work to ensure that sufficient hot water can be provided, such as Figure 5 shown.

[0064] More specifically, if Figure 5 As shown, a second circulation pipeline passing through the second heat exchanger 15 can be set, and both ends of the second circulation pipeline are connected to the high-temperature refrigerant output end of the compressor in the air-conditioning system 3, so that part or all of the refrigerant compressed by the compressor can first pass through the second circulation pipeline, and perform heat exchange with the water supply circuit 10 at the second heat exchanger 15, transfer heat to the water supply circuit 10, and the refrigerant that completes the heat exchange returns to the air-conditioning system.

[0065] In the above embodiment, the heat in the air-conditioning system can be used to heat the water in the water supply circuit without the need for an additional electric water heater, so no additional electricity is consumed, which can effectively save energy.

[0066] As an optional implementation, Figure 6 As shown, this embodiment further includes a water storage tank 16 disposed on the water supply loop 10. The water storage tank 16 is used to store water in the water supply loop 10 for users to take.

[0067] The first end of the second heat exchanger 15 is connected to the first end of the water tank 16 , and the second end of the second heat exchanger 15 is connected to the second end of the water tank 16 , the first end of the first valve 12 , and the first end of the second valve 14 .

[0068] The second end of the first valve 12 is connected to the first end of the battery waste heat exchanger 110, and the second end of the battery waste heat exchanger 110 is connected to the second end of the water tank 16; the second end of the second valve 14 is connected to the first end of the electric drive waste heat exchanger 111, and the second end of the electric drive waste heat exchanger 111 is connected to the second end of the water tank 16.

[0069] In some embodiments, the first control unit 131 and the second control unit 132 are the same control unit, and the first control unit 131 and the second control unit 132 are defined as the control unit 13. With such a configuration, the control unit 13 can control the battery waste heat exchanger 110 by controlling the first valve 12, and control the electric drive waste heat exchanger 111 by controlling the second valve 14. In this way, when the temperature of the battery 200 is greater than the first target temperature, the first valve 12 is controlled to be turned on, so that the battery waste heat exchanger 112 transfers the heat of the battery cooling circuit 202 to the water supply circuit 10. When the temperature of the electric drive device 210 is greater than the third target temperature, the second valve 14 is controlled to be turned on, so that the electric drive waste heat exchanger 111 transfers the heat of the electric drive cooling circuit 212 to the water supply circuit 10. The air conditioning system 3 can perform heat exchange with the water supply circuit at the second heat exchanger 15 to transfer the heat to the water supply circuit 10.

[0070] In a specific embodiment, in order to facilitate the control of the flow direction of water in the water supply loop 10, a first three-way valve 17 can be set at the second end of the second heat exchanger 15, the first end of the first three-way valve 17 is connected to the second end of the second heat exchanger 15, the second end of the first three-way valve 17 is connected to the second end of the water tank 16, and the third end of the first three-way valve 17 is connected to the first end of the first valve 12 and the first end of the second valve 14, respectively.

[0071] like Figure 6 As shown, when only the second heat exchanger 15 is working, the a end and the c end of the first three-way valve 17 are connected; when the battery waste heat exchanger 110 is required to work, the a end and the b end of the first three-way valve 17 are connected, and the first valve 12 is connected; when the electric drive waste heat exchanger 111 is required to work, the a end and the b end of the first three-way valve 17 are connected, and the second valve 14 is connected.

[0072] With such a configuration, it is possible to avoid connecting the electric drive waste heat exchanger 111 to the water supply loop 10 when the temperature of the electric drive equipment 210 is lower than the third target temperature, and to avoid connecting the battery waste heat exchanger 110 to the water supply loop 10 when the temperature of the battery 200 is lower than the first target temperature, so as to reduce the length of the water supply loop 10, improve the insulation capacity of the water supply loop 10, and speed up the hot water production.

[0073] As an optional implementation, Figure 7 As shown, in another embodiment of the present application, the second heat exchanger 15 is connected to the water supply circuit 10 through the third valve 18. When the third valve 18 is turned on, the second heat exchanger 15 is connected to the water supply circuit 10 and can perform the task of heat exchange, transferring the heat of the air conditioning system 3 to the water supply circuit 10; when the third valve 18 is not turned on, the second heat exchanger 15 is not connected to the water supply circuit 10 and cannot perform the task of heat exchange.

[0074] The system 1 for providing hot water in this embodiment also includes a third control unit 133. It should be noted that the third control unit 133 of this embodiment may be the same control unit as the first control unit 131 and the second control unit 132 of the above-mentioned embodiment, or may not be the same control unit as the first control unit 131 and the second control unit 132 of the above-mentioned embodiment, and this is not limited in this embodiment. Specifically, the third control unit 133 is electrically connected to the third valve 18. The third control unit 133 is used to control the conduction of the third valve 18 when the air-conditioning system 3 is started, so that the second heat exchanger 15 can be connected to the water supply circuit 10 to perform the task of heat exchange. The air-conditioning system 3 and the water supply circuit 10 perform heat exchange at the second heat exchanger 15, and the second heat exchanger 15 transfers the heat of the air-conditioning system 3 to the water supply circuit 10.

[0075] In the above embodiment, when the air conditioning system is working, the heat in the air conditioning system can be used to heat the water in the water supply circuit, without the need for an additional electric water heater, and thus without consuming additional electricity, which can effectively save energy.

[0076] As an optional implementation, Figure 8 As shown, in another embodiment of the present application, this embodiment further includes a water storage tank 16 disposed on the water supply circuit 10. The water storage tank 16 is used to store water in the water supply circuit 10 for users to take.

[0077] The first end of the water storage tank 16 is respectively connected to the first end of the first valve 12, the first end of the second valve 14, and the first end of the third valve 18. The second end of the first valve 12 is connected to the first end of the battery waste heat exchanger 110, the second end of the second valve 14 is connected to the first end of the electric drive waste heat exchanger 111, the second end of the third valve 18 is connected to the first end of the second heat exchanger 15, and the second end of the battery waste heat exchanger 110, the second end of the electric drive waste heat exchanger 111, and the second end of the second heat exchanger 15 are all connected to the second end of the water storage tank 16.

[0078] In some embodiments, the first control unit 131, the second control unit 132, and the third control unit 133 are the same control unit, and the first control unit 131, the second control unit 132, and the third control unit 133 are defined as the control unit 13. In this way, the control unit 13 can control the battery waste heat exchanger 110 by controlling the first valve 12, control the electric drive waste heat exchanger 111 by controlling the second valve 14, and control the second heat exchanger 15 by controlling the third valve 18. When the temperature of the battery 200 is greater than the first target temperature, the first valve 12 is controlled to be turned on so that the battery waste heat exchanger 112 transfers the heat of the battery cooling circuit 202 to the water supply circuit 10. When the temperature of the electric drive device 210 is greater than the third target temperature, the second valve 14 is controlled to be turned on so that the electric drive waste heat exchanger 111 transfers the heat of the electric drive cooling circuit 212 to the water supply circuit 10. When the air conditioning system 3 is started, the third valve 18 is controlled to be turned on so that the second heat exchanger 15 transfers the heat of the air conditioning system 3 to the water supply circuit 10.

[0079] With such a configuration, it is possible to avoid connecting the electric drive waste heat exchanger 111 to the water supply circuit 10 when the temperature of the electric drive equipment 210 is lower than the third target temperature, avoid connecting the battery waste heat exchanger 110 to the water supply circuit 10 when the temperature of the battery 200 is lower than the first target temperature, and avoid connecting the second heat exchanger 15 to the water supply circuit 10 when the air-conditioning system 3 is not working, so as to reduce the length of the water supply circuit 10, improve the insulation capacity of the water supply circuit 10, and speed up the hot water production.

[0080] As an optional implementation, the first control unit 131, the second control unit 132, and the third control unit 133 are the same control unit, and the first control unit 131, the second control unit 132, and the third control unit 133 are defined as the control unit 13. Fig. 9 As shown, in another embodiment of the present application, the above-mentioned vehicle also includes a vehicle system 4 (Human Machine Interface, HMI), and the control unit 13 is electrically connected to the vehicle system 4.

[0081] When the user is in the car, he directly turns on the hot water heating button at the vehicle system 4 and sets the target heating temperature. The control unit 13 controls the hot water supply system 1 to work according to the target heating temperature. In addition, the user can also make reservation heating settings, including setting the reservation time and the target heating temperature. The set reservation time will be stored in the control unit 13 and start timing. When the timer of the control unit 13 reaches the reservation time point, the control unit 13 controls the hot water supply system 1 to work according to the target heating temperature set by the user.

[0082] The control unit 13 controls the specific working process of the hot water providing system 1 according to the target heating temperature set by the user. According to the records of the above embodiment, if it is detected that the temperature of the electric drive device 210 is greater than the third target temperature, the second valve 14 is controlled to be turned on, so that the electric drive waste heat exchanger 111 transfers the heat of the electric drive cooling circuit 212 to the water supply circuit 10; if it is detected that the temperature of the battery 200 is greater than the first target temperature, the first valve 12 is controlled to be turned on, so that the battery waste heat exchanger 112 transfers the heat of the battery cooling circuit 202 to the water supply circuit 10; if it is detected that the air-conditioning system 3 is working, the second heat exchanger 15 transfers the heat of the air-conditioning system 3 to the water supply circuit 10.

[0083] In addition, if the temperature of the battery 200 is less than or equal to the first target temperature, the temperature of the electric drive device 210 is less than or equal to the third target temperature, and the air-conditioning system 3 is not working, in order to ensure that the target heating temperature can be heated to meet the user's requirements, the control unit 13 can control the compressor of the air-conditioning system 3 to work, and use the heat generated by the compressor compressing the refrigerant to heat the water in the water supply circuit 10.

[0084] As an optional implementation, Fig. 9 As shown, in another embodiment of the present application, it is disclosed that the above-mentioned control unit 13 can also interact with the client through the cloud server. Among them, the client can be an electronic device with network access capability. Specifically, for example, the client can be a desktop computer, a tablet computer, a laptop computer, a smart phone, a digital assistant, a smart wearable device, a shopping guide terminal, a television, etc. Among them, smart wearable devices include but are not limited to smart bracelets, smart watches, smart glasses, smart helmets, smart necklaces, etc. Alternatively, the client can also be software that can run in an electronic device.

[0085] The user can turn on the hot water heating button through the client and set the target heating temperature. The request signal carrying the target heating temperature is sent to the control unit 13 through the cloud server. The control unit 13 controls the system 1 for providing hot water to work according to the target heating temperature. In addition, the user can make reservation heating settings through the client, including setting the reservation time and the target heating temperature. The set reservation time will be stored in the cloud server and start timing. When the timer of the cloud server reaches the reservation time point, the cloud server will send a heating request carrying the target heating temperature to the control unit 13. The control unit 13 controls the system 1 for providing hot water to work according to the target heating temperature.

[0086] The control unit 13 controls the specific operation process of the hot water providing system 1 according to the target heating temperature set by the user, which is the same as the recorded process according to the above embodiment. Those skilled in the art may refer to the records of the above embodiment, which will not be described here.

[0087] As an optional implementation, Fig. 9 As shown, the system 1 for providing hot water includes a liquid level sensor 19, which is arranged in the water tank 16. The liquid level sensor 19 can detect the water level of the water tank 16. When the liquid level sensor 19 detects that the water level of the water tank 16 is lower than the set minimum water level, the control unit 13 needs to control the system 1 for providing hot water to stop heating to avoid dry burning and ensure the safety of hot water use. At the same time, the control unit 13 needs to remind the user to replenish water through the vehicle system 4 or the cloud server, such as outputting text or voice of "the water level of the water tank is low, please replenish water in time".

[0088] In a specific embodiment, the connection relationship between the hot water supply system and the air conditioning system, electric drive system, battery system, etc. in the vehicle is as follows: Fig.10 shown.

[0089] The system for providing hot water includes a water supply circuit, and an electric drive waste heat exchanger, a battery waste heat exchanger, a second heat exchanger, a water storage tank, a first three-way valve, a first valve, a second valve, a one-way valve and a first water pump, all of which are arranged on the water supply circuit.

[0090] like Fig.10 As shown, the one-way valve is arranged at the second end of the water storage tank, which can ensure that the water in the water supply circuit can flow in one direction to avoid system confusion or damage. The first water pump is arranged at the second end of the second heat exchanger, which can speed up the circulation speed of the water in the water supply circuit, which can not only improve the heating speed, but also ensure that the user can use water conveniently. In addition, both the first valve and the second valve can adopt solenoid valves. The air conditioning system in the vehicle includes a compressor, an in-vehicle condenser, an out-vehicle heat exchanger, a cooling fan, an evaporator, a blower, a second three-way valve, a first electronic expansion valve, a second electronic expansion valve, a fourth valve, a first proportional valve and a second proportional valve. The fourth valve can adopt a solenoid valve. Furthermore, both ends of the second circulation pipeline passing through the second heat exchanger are connected to the high-temperature refrigerant output end of the compressor in the air conditioning system. The in-vehicle condenser, evaporator, and blower are arranged in the passenger compartment to provide cold air or hot air to the passenger compartment. The electric drive system in the vehicle includes DCDC, OBC, E-Motor, a second water pump, an electric drive temperature sensor, and a low-temperature radiator. The battery system includes a battery (Battery), a third water pump, a chiller, a third electronic expansion valve and a battery temperature sensor.

[0091] It can be understood that in this embodiment, there are three heat sources for heating the water supply circuit, namely, the electric drive system, the battery system and the air conditioning system. Depending on the different heat sources, this embodiment may include the following working modes.

[0092] Mode 1: The air conditioning system heats the water while cooling.

[0093] Specific as Fig.10 As shown, in this mode, the second proportional valve is in the fully open position, the first electronic expansion valve is open, the a and c ends of the first three-way valve are connected, the a and c ends of the second three-way valve are connected, and the cooling fan and the blower are both working; the second electronic expansion valve, the fourth valve, the first proportional valve, the third electronic expansion valve, the first valve, and the second valve are all closed; the first water pump is working, and the second water pump and the third water pump are not working.

[0094] The high-temperature refrigerant discharged from the compressor flows through the second heat exchanger through the second proportional valve, and exchanges heat with the water supply circuit here to heat the cooling water. It then flows through the second three-way valve and the outdoor heat exchanger in sequence, where the heat exchange temperature between the refrigerant and the outdoor air is reduced. It is then throttled at the first electronic expansion valve to become a low-temperature and low-pressure refrigerant. It then exchanges heat with the air intake air of the air-conditioning box at the evaporator and returns to the compressor, forming a cycle.

[0095] It can be understood that when the air-conditioning system is cooling, the high-temperature refrigerant discharged from the compressor is used to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the air-conditioning system to reduce the refrigerant temperature, which can reduce the load of the external heat exchanger and thus reduce the power consumption of the cooling fan.

[0096] Mode 2: The air conditioner heats the water while dehumidifying.

[0097] Specific as Fig.10 As shown, in this mode, the first proportional valve and the second proportional valve must be opened, the second electronic expansion valve and the first electronic expansion valve are opened, the fourth valve, the third electronic expansion valve, the first valve, and the second valve are closed; the a and b ends of the second three-way valve are connected, the a and c ends of the first three-way valve are connected, the cooling fan and the blower are both working; the first water pump is working, and the second water pump and the third water pump are not working.

[0098] A part of the high-temperature refrigerant discharged from the compressor flows through the in-vehicle condenser through the first proportional valve, and heats the dry low-temperature air blown out from the evaporator here. Another part of the high-temperature and high-pressure refrigerant flows through the second heat exchanger through the second proportional valve, and exchanges heat with the water supply circuit here to heat the cooling water. Then it passes through the second three-way valve and merges with the refrigerant coming out of the in-vehicle condenser, and then is throttled by the second electronic expansion valve and passes through the outdoor heat exchanger. Here, the heat exchange temperature of the refrigerant and the outdoor air is reduced, and then it is throttled again at the first electronic expansion valve to become a low-temperature and low-pressure refrigerant, and then returns to the compressor after heat exchange with the air intake air of the air-conditioning box at the evaporator, forming a cycle.

[0099] It can be understood that when the air-conditioning system is dehumidifying, the high-temperature refrigerant discharged from the compressor is used to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the air-conditioning system to reduce the refrigerant temperature, which can reduce the load of the external heat exchanger and thus reduce the power consumption of the cooling fan.

[0100] Mode three, only heats water.

[0101] Specific as Fig.10 As shown, in this mode, the second proportional valve is in the fully open position, the second electronic expansion valve is working, and the fourth valve is open; the first electronic expansion valve, the first proportional valve, the third electronic expansion valve, the first valve and the second valve are all closed; the a and b ends of the second three-way valve are connected, the a and c ends of the first three-way valve are connected, and the cooling fan and the blower are both working; the first water pump is working, and the second water pump and the third water pump are not working.

[0102] The high-temperature and high-pressure refrigerant discharged from the compressor flows through the second heat exchanger through the second proportional valve, where it exchanges heat with the water supply circuit to heat the cooling water, then flows through the second three-way valve, and after throttling at the second electronic expansion valve, passes through the outdoor heat exchanger, where the refrigerant exchanges heat with the outdoor air, and then flows back to the compressor through the fourth valve to form a cycle.

[0103] Mode 4: Heat water while the air conditioner is heating.

[0104] Specific as Fig.10 As shown, in this mode, the first proportional valve and the second proportional valve must be opened, the second electronic expansion valve is opened, the fourth valve is opened, the first electronic expansion valve, the third electronic expansion valve, the first valve and the second valve are closed; the a and b ends of the second three-way valve are connected, the a and c ends of the first three-way valve are connected, the cooling fan and the blower are both working; the first water pump is working, and the second water pump and the third water pump are not working.

[0105] A part of the high-temperature and high-pressure refrigerant discharged from the compressor flows through the in-vehicle condenser through the first proportional valve, where it heats the air in the vehicle. Another part of the high-temperature and high-pressure refrigerant flows through the second heat exchanger through the second proportional valve, where it exchanges heat with the water supply circuit to heat the cooling water. It then passes through the second three-way valve and merges with the refrigerant coming out of the in-vehicle condenser, then is throttled by the second electronic expansion valve and passes through the outdoor heat exchanger, where the refrigerant exchanges heat with the outdoor air, and then flows back to the compressor through the fourth valve to form a cycle.

[0106] Mode five: Recover waste heat from the battery system to heat water while the air conditioner is cooling.

[0107] Specific as Fig.10As shown, in this mode, the second proportional valve is in the fully open position, the first electronic expansion valve, the third electronic expansion valve, and the first valve are all open; the a and c ends of the second three-way valve are connected, the a and b ends of the first three-way valve are connected, and the cooling fan and the blower are both working; the second electronic expansion valve, the fourth valve, the first proportional valve, and the second valve are all closed; the first water pump and the third water pump are both working, and the second water pump is not working.

[0108] The high-temperature and high-pressure refrigerant discharged from the compressor flows through the second heat exchanger through the second proportional valve, and exchanges heat with the water supply circuit here to heat the cooling water, and then flows through the second three-way valve and the outdoor heat exchanger in sequence, where the heat exchange temperature between the refrigerant and the outdoor air is reduced, and then a part of the refrigerant is throttled at the first electronic expansion valve and exchanges heat with the air intake air of the air-conditioning box at the evaporator, and the other part of the refrigerant is throttled at the third electronic expansion valve and exchanges heat with the battery cooling circuit at the Chiller, and then merges back to the compressor to form a cycle.

[0109] After being heated at the second heat exchanger, the hot water passes through the first water pump, the first three-way valve, and the first valve in sequence, and recovers the heat of the battery cooling circuit at the battery waste heat exchanger, and then flows through the one-way valve and the water tank to form a cycle.

[0110] It can be understood that when the air-conditioning system is cooling, the high-temperature refrigerant discharged from the compressor is used to heat the water in the water supply circuit. This process can also be seen as the process of the water supply circuit dissipating heat for the air-conditioning system to reduce the refrigerant temperature, which can reduce the load of the external heat exchanger and thus reduce the power consumption of the cooling fan. The heat generated by the battery is eventually transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be seen as the process of the water supply circuit dissipating heat for the battery, reducing the cooling load of the Chiller and further reducing the power consumption used for battery cooling.

[0111] Mode six, while the air conditioner is dehumidifying, the waste heat from the battery system is recovered to heat the water.

[0112] Specific as Fig.10 As shown, in this mode, the first proportional valve and the second proportional valve must be opened, the second electronic expansion valve, the first electronic expansion valve, the third electronic expansion valve, and the first valve are all opened, and the fourth valve and the second valve are all closed; the a and b ends of the second three-way valve are connected, the a and b ends of the first three-way valve are connected, the cooling fan and the blower are both working; the first water pump and the third water pump are both working, and the second water pump is not working.

[0113] A part of the high-temperature and high-pressure refrigerant discharged from the compressor flows through the in-vehicle condenser through the first proportional valve, and heats the dry and low-temperature air blown out from the evaporator here. Another part of the high-temperature and high-pressure refrigerant flows through the second heat exchanger through the second proportional valve, and exchanges heat with the water supply circuit here to heat the cooling water. Then it passes through the second three-way valve and merges with the refrigerant coming out of the in-vehicle condenser, and then is throttled by the second electronic expansion valve and passes through the outdoor heat exchanger. Here, the heat exchange temperature between the refrigerant and the outdoor air is reduced. Then, a part of the refrigerant is throttled again at the first electronic expansion valve and then exchanges heat with the air intake air of the air-conditioning box at the evaporator. Another part of the refrigerant is throttled again at the third electronic expansion valve and exchanges heat with the battery cooling circuit at the Chiller, and then merges back to the compressor to form a cycle.

[0114] After being heated at the second heat exchanger, the hot water passes through the first water pump, the first three-way valve, and the first valve in sequence, and recovers the heat of the battery cooling circuit at the battery waste heat exchanger, and then flows through the one-way valve and the water tank to form a cycle.

[0115] It can be understood that when the air-conditioning system is dehumidifying, the high-temperature refrigerant discharged from the compressor is used to heat the water in the water supply circuit. This process can also be seen as the process of the water supply circuit dissipating heat for the air-conditioning system to reduce the refrigerant temperature, which can reduce the load of the external heat exchanger and thus reduce the power consumption of the cooling fan. The heat generated by the battery is eventually transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be seen as the process of the water supply circuit dissipating heat for the battery, reducing the cooling load of the Chiller and further reducing the power consumption used for battery cooling.

[0116] Mode seven, only the waste heat of the battery system is recovered to heat the water.

[0117] Specific as Fig.10 As shown, when the temperature of the battery is greater than the first target temperature and less than or equal to the second target temperature, the refrigerant circuit valves are all closed, and the cooling fan and the blower do not work; the first valve is opened, and the second valve is closed; the a and b ends of the first three-way valve are connected; the first water pump and the third water pump are both working, and the second water pump and the second water pump are not working.

[0118] The hot water passes through the second heat exchanger, the first water pump, the first three-way valve, and the first valve in sequence, and recovers the heat of the battery cooling circuit at the battery waste heat exchanger, and then flows through the one-way valve and the water tank to form a cycle.

[0119] When the battery temperature is greater than or equal to the second target temperature, the chiller needs to intervene to cool the battery. Specifically, the second proportional valve is in the fully open position, the third electronic expansion valve and the first valve are both open; the a and c ends of the second three-way valve are connected, the a and b ends of the first three-way valve are connected, the cooling fan works, and the blower does not work; the second electronic expansion valve, the first electronic expansion valve, the fourth valve, the first proportional valve, and the second valve are all closed; the first water pump and the third water pump work, and the second water pump does not work.

[0120] The high-temperature and high-pressure refrigerant discharged from the compressor flows through the second heat exchanger through the second proportional valve, where it exchanges heat with the water supply circuit to heat the cooling water, and then flows through the second three-way valve and the outdoor heat exchanger in sequence, where the heat exchange temperature of the refrigerant and the outdoor air is reduced, and then it is throttled at the third electronic expansion valve and exchanges heat with the battery cooling circuit at the Chiller, and then returns to the compressor to form a cycle.

[0121] After being heated at the second heat exchanger, the hot water passes through the first water pump, the first three-way valve, and the first valve in sequence, and recovers the heat of the battery cooling circuit at the battery waste heat exchanger, and then flows through the one-way valve and the water tank to form a cycle.

[0122] It can be understood that the heat generated by the battery is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the battery, reducing the cooling load of the Chiller and further reducing the energy consumption used for battery cooling.

[0123] Mode eight, only the waste heat from the electric drive system is recovered to heat the water.

[0124] In this mode, all refrigerant circuit valves are closed, the cooling fan is working, and the blower is not working; the first valve is closed, and the second valve is open; the a and b ends of the first three-way valve are connected; the first water pump and the second water pump are both working, and the third water pump is not working.

[0125] The hot water passes through the second heat exchanger, the first water pump, the first three-way valve, and the second valve in sequence, and recovers the heat of the electric drive cooling circuit at the electric drive waste heat exchanger, and then flows through the one-way valve and the water tank to form a cycle.

[0126] It can be understood that the heat generated by the operation of the electric drive equipment is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit cooling the electric drive equipment. In this way, while recovering the large amount of heat generated by the operation of DCDC, OBC, and E-Motor to heat the water, it also reduces the load of the low-temperature radiator. When the temperature of the electric drive equipment is lower than the fourth target temperature, the cooling fan does not need to work. When the temperature of the electric drive equipment exceeds the fourth target temperature, the power consumption of the cooling fan can be reduced.

[0127] Mode nine: Recover waste heat from the electric drive system to heat water while the air conditioner is cooling.

[0128] In this mode, the second proportional valve is in the fully open position, the first electronic expansion valve and the second valve are both open; the a and c ends of the second three-way valve are connected, the a and b ends of the first three-way valve are connected, and the cooling fan and the blower are both working; the second electronic expansion valve, the fourth valve, the first proportional valve, the third electronic expansion valve, and the first valve are all closed; the first water pump and the second water pump are both working, and the third water pump is not working.

[0129] The high-temperature and high-pressure refrigerant discharged from the compressor flows through the second heat exchanger through the second proportional valve, and exchanges heat with the water supply circuit here to heat the cooling water, and then flows through the second three-way valve and the outdoor heat exchanger in sequence, where the heat exchange temperature of the refrigerant and the outdoor air is reduced, and then after throttling at the first electronic expansion valve, it exchanges heat with the air intake air of the air-conditioning box at the evaporator, and then returns to the compressor to form a cycle.

[0130] After being heated in the second heat exchanger, the hot water passes through the first water pump, the first three-way valve, and the second valve in sequence, and recovers the heat of the battery cooling circuit at the electric drive waste heat exchanger, and then flows through the one-way valve and the water tank to form a cycle.

[0131] It can be understood that when the air conditioning system is cooling, the high-temperature refrigerant discharged from the compressor is used to heat the water in the water supply circuit. This process can also be regarded as the process in which the water supply circuit dissipates heat for the air conditioning system to reduce the refrigerant temperature, which can reduce the load of the external heat exchanger, thereby reducing the power consumption of the cooling fan;

[0132] The heat generated by the operation of the electric drive equipment is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit cooling the electric drive equipment. In this way, while recovering a large amount of heat generated by the operation of the electric drive equipment to heat the water, it also reduces the load of the low-temperature radiator. When the temperature of the electric drive equipment is lower than the fourth target temperature, the cooling fan does not need to work. When the temperature of the electric drive equipment exceeds the fourth target temperature, the power consumption of the cooling fan can be reduced.

[0133] Mode 10: Recover waste heat from the electric drive system to heat water while the air conditioner is dehumidifying.

[0134] In this mode, the first proportional valve and the second proportional valve must be opened, the second electronic expansion valve, the first electronic expansion valve, and the second valve are all opened, and the fourth valve, the third electronic expansion valve, and the first valve are all closed; the a and b ends of the second three-way valve are connected, the a and b ends of the first three-way valve are connected, and the cooling fan and the blower both work; the first water pump and the second water pump both work, and the third water pump does not work.

[0135] A part of the high-temperature and high-pressure refrigerant discharged from the compressor flows through the in-vehicle condenser through the first proportional valve, and heats the dry and low-temperature air blown out from the evaporator here. Another part of the high-temperature and high-pressure refrigerant flows through the second heat exchanger through the second proportional valve, and exchanges heat with the water supply circuit here to heat the cooling water. Then it passes through the second three-way valve and merges with the refrigerant coming out of the in-vehicle condenser, and then is throttled by the second electronic expansion valve and passes through the outdoor heat exchanger. Here, the heat exchange temperature of the refrigerant and the outdoor air is reduced, and then it is throttled again at the first electronic expansion valve to become a low-temperature and low-pressure refrigerant, and then returns to the compressor after heat exchange with the air intake air of the air-conditioning box at the evaporator, forming a cycle.

[0136] After being heated in the second heat exchanger, the hot water passes through the first water pump, the first three-way valve, and the second valve in sequence, and recovers the heat of the battery cooling circuit at the electric drive waste heat exchanger, and then flows through the one-way valve and the water tank to form a cycle.

[0137] It can be understood that when the air conditioning system is dehumidifying, the high-temperature refrigerant discharged from the compressor is used to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the air conditioning system to reduce the refrigerant temperature, which can reduce the load of the external heat exchanger and thus reduce the power consumption of the cooling fan;

[0138] The heat generated by the operation of the electric drive equipment is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit cooling the electric drive equipment. In this way, while recovering a large amount of heat generated by the operation of the electric drive equipment to heat the water, it also reduces the load of the low-temperature radiator. When the temperature of the electric drive equipment is lower than the fourth target temperature, the cooling fan does not need to work. When the temperature of the electric drive equipment exceeds the fourth target temperature, the power consumption of the cooling fan can be reduced.

[0139] Mode 11: While the air conditioner is heating, the waste heat from the electric drive system is recovered to heat the water.

[0140] In this mode, the first proportional valve and the second proportional valve must be opened, the second electronic expansion valve is opened, and the fourth valve and the second valve are opened; the first electronic expansion valve, the third electronic expansion valve, and the first valve are all closed; the a and b ends of the second three-way valve are connected, the a and b ends of the first three-way valve are connected, and the cooling fan and the blower are both working; the first water pump and the second water pump are both working, and the third water pump is not working.

[0141] A part of the high-temperature and high-pressure refrigerant discharged from the compressor flows through the in-vehicle condenser through the first proportional valve, where it heats the air in the vehicle. Another part of the high-temperature and high-pressure refrigerant flows through the second heat exchanger through the second proportional valve, where it exchanges heat with the water supply circuit to heat the cooling water. It then passes through the second three-way valve and merges with the refrigerant coming out of the in-vehicle condenser, then is throttled by the second electronic expansion valve and passes through the outdoor heat exchanger, where the refrigerant exchanges heat with the outdoor air, and then flows back to the compressor through the fourth valve to form a cycle.

[0142] After being heated in the second heat exchanger, the hot water passes through the first water pump, the first three-way valve, and the second valve in sequence, and recovers the heat of the battery cooling circuit at the electric drive waste heat exchanger, and then flows through the one-way valve and the water tank to form a cycle.

[0143] It can be understood that the heat generated by the operation of the electric drive equipment is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit cooling the electric drive equipment. In this way, while recovering the large amount of heat generated by the electric drive equipment when it is working to heat the water, it also reduces the load of the low-temperature radiator. When the temperature of the electric drive equipment is lower than the fourth target temperature, the cooling fan does not need to work. When the temperature of the electric drive equipment exceeds the fourth target temperature, the power consumption of the cooling fan can be reduced.

[0144] Mode twelve, recovers waste heat from the electric drive and battery systems to heat water.

[0145] When the battery temperature is greater than the first target temperature and less than or equal to the second target temperature, the cooling fan works and the blower does not work; the first valve and the second valve are both open; the a and b ends of the first three-way valve are connected; the first water pump, the third water pump, and the second water pump all work.

[0146] The hot water passes through the second heat exchanger, the first water pump, the first three-way valve in sequence, and then part of it passes through the first valve and recovers the heat of the battery cooling circuit at the battery waste heat exchanger, and the other part passes through the second valve and recovers the heat of the electric drive cooling circuit at the electric drive waste heat exchanger. After that, they merge and flow through the one-way valve and the water tank to form a cycle.

[0147] When the battery temperature is greater than or equal to the second target temperature, the chiller needs to intervene to cool the battery. Specifically, the second proportional valve is in the fully open position, the third electronic expansion valve, the first valve, and the second valve are all open; the a and c ends of the second three-way valve are connected, the a and b ends of the first three-way valve are connected, the cooling fan works, and the blower does not work; the second electronic expansion valve, the first electronic expansion valve, the fourth valve, and the first proportional valve are all closed; the first water pump, the third water pump, and the second water pump are all working.

[0148] The high-temperature and high-pressure refrigerant discharged from the compressor flows through the second heat exchanger through the second proportional valve, where it exchanges heat with the water supply circuit to heat the cooling water, and then flows through the second three-way valve and the outdoor heat exchanger in sequence, where the heat exchange temperature of the refrigerant and the outdoor air is reduced, and then it is throttled at the third electronic expansion valve and exchanges heat with the battery cooling circuit at the Chiller, and then returns to the compressor to form a cycle.

[0149] The hot water passes through the second heat exchanger, the first water pump, the first three-way valve in sequence, and then part of it passes through the first valve and recovers the heat of the battery cooling circuit at the battery waste heat exchanger, and the other part passes through the second valve and recovers the heat of the electric drive cooling circuit at the electric drive waste heat exchanger. After that, they merge and flow through the one-way valve and the water tank to form a cycle.

[0150] It can be understood that the heat generated by the operation of the electric drive equipment is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the electric drive equipment. In this way, while recovering a large amount of heat generated by the operation of the electric drive equipment to heat the water, the load of the low-temperature radiator is also reduced. When the temperature of the electric drive equipment is lower than the fourth target temperature, the cooling fan does not need to work. When the temperature of the electric drive equipment exceeds the fourth target temperature, the power consumption of the cooling fan can be reduced. The heat generated by the operation of the battery is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the battery, which reduces the cooling load of the Chiller and can further reduce the power consumption used for battery cooling.

[0151] Mode 13: Recover waste heat from the electric drive and battery systems to heat water while cooling.

[0152] In this mode, the second proportional valve is in the fully open position, the first electronic expansion valve, the third electronic expansion valve, the first valve, and the second valve are all open; the a and c ends of the second three-way valve are connected, the a and b ends of the first three-way valve are connected, and the cooling fan and the blower are both working; the second electronic expansion valve, the fourth valve, and the first proportional valve are all closed; the first water pump, the third water pump, and the second water pump are all working.

[0153] The high-temperature and high-pressure refrigerant discharged from the compressor flows through the second heat exchanger through the second proportional valve, and exchanges heat with the water supply circuit here to heat the cooling water, and then flows through the second three-way valve and the outdoor heat exchanger in sequence, where the heat exchange temperature between the refrigerant and the outdoor air is reduced, and then a part of the refrigerant is throttled at the first electronic expansion valve and exchanges heat with the air intake air of the air-conditioning box at the evaporator, and the other part of the refrigerant is throttled at the third electronic expansion valve and exchanges heat with the battery cooling circuit at the Chiller, and then merges back to the compressor to form a cycle.

[0154] The hot water passes through the second heat exchanger, the first water pump, the first three-way valve in sequence, and then part of it passes through the first valve and recovers the heat of the battery cooling circuit at the battery waste heat exchanger, and the other part passes through the second valve and recovers the heat of the electric drive cooling circuit at the electric drive waste heat exchanger. After that, they merge and flow through the one-way valve and the water tank to form a cycle.

[0155] It can be understood that the heat generated by the operation of the electric drive device is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit cooling the electric drive device. In this way, while recovering a large amount of heat generated by the operation of the electric drive device to heat the water, the load of the low-temperature radiator is also reduced. When the temperature of the electric drive device is lower than the fourth target temperature, the cooling fan does not need to work. When the temperature of the electric drive device exceeds the fourth target temperature, the power consumption of the cooling fan can be reduced.

[0156] The heat generated by the battery is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the battery, reducing the cooling load of the chiller and further reducing the power consumption for battery cooling.

[0157] When the air-conditioning system is cooling, the high-temperature refrigerant discharged from the compressor is used to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the air-conditioning system to reduce the refrigerant temperature, which can reduce the load of the external heat exchanger and thus reduce the power consumption of the cooling fan.

[0158] Mode 14: Recover waste heat from the electric drive and battery systems to heat water while dehumidifying.

[0159] In this mode, the first proportional valve and the second proportional valve must be opened, the second electronic expansion valve, the first electronic expansion valve, the third electronic expansion valve, the first valve, and the second valve are all opened, and the fourth valve is closed; the a and b ends of the second three-way valve are connected, the a and b ends of the first three-way valve are connected, the cooling fan and the blower are both working; the first water pump, the third water pump, and the second water pump are all working.

[0160] A part of the high-temperature and high-pressure refrigerant discharged from the compressor flows through the in-vehicle condenser through the first proportional valve, and heats the dry and low-temperature air blown out from the evaporator here. Another part of the high-temperature and high-pressure refrigerant flows through the second heat exchanger through the second proportional valve, and exchanges heat with the water supply circuit here to heat the cooling water. Then it passes through the second three-way valve and merges with the refrigerant coming out of the in-vehicle condenser, and then is throttled by the second electronic expansion valve and passes through the outdoor heat exchanger. Here, the heat exchange temperature between the refrigerant and the outdoor air is reduced. Then, a part of the refrigerant is throttled again at the first electronic expansion valve and then exchanges heat with the air intake air of the air-conditioning box at the evaporator. Another part of the refrigerant is throttled again at the third electronic expansion valve and exchanges heat with the battery cooling circuit at the Chiller, and then merges back to the compressor to form a cycle.

[0161] The hot water passes through the second heat exchanger, the first water pump, the first three-way valve in sequence, and then part of it passes through the first valve and recovers the heat of the battery cooling circuit at the battery waste heat exchanger, and the other part passes through the second valve and recovers the heat of the electric drive cooling circuit at the electric drive waste heat exchanger. After that, they merge and flow through the one-way valve and the water tank to form a cycle.

[0162] It can be understood that the heat generated by the operation of the electric drive device is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit cooling the electric drive device. In this way, while recovering a large amount of heat generated by the operation of the electric drive device to heat the water, the load of the low-temperature radiator is also reduced. When the temperature of the electric drive device is lower than the fourth target temperature, the cooling fan does not need to work. When the temperature of the electric drive device exceeds the fourth target temperature, the power consumption of the cooling fan can be reduced.

[0163] The heat generated by the battery is transferred to the water supply circuit to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the battery, reducing the cooling load of the chiller and further reducing the power consumption for battery cooling.

[0164] When the air conditioning system is dehumidifying, the high-temperature refrigerant discharged from the compressor is used to heat the water in the water supply circuit. This process can also be regarded as the process of the water supply circuit dissipating heat for the air conditioning system to reduce the refrigerant temperature, which can reduce the load of the external heat exchanger and thus reduce the power consumption of the cooling fan.

[0165] Furthermore, the present application provides a method for providing hot water, which is described by taking the method applied to an electronic device as an example. The electronic device may specifically be the system for providing hot water in the above embodiment. Fig.11 As shown, the method includes:

[0166] S101, obtaining a water heating instruction.

[0167] S102, controlling the first heat exchanger to transfer waste heat from the system to be cooled in the vehicle to the water supply circuit, so that the temperature of the hot water in the water supply circuit meets the set water temperature during the set water use time period; the system to be cooled includes at least one of a battery system and an electric drive system.

[0168] Specifically, the user can send a heating instruction through the client or the vehicle system according to the records in the above embodiment. The water heating instruction can be an instruction for controlling the current water temperature with a target heating temperature, or it can be an instruction for scheduled heating with a reservation time and a target heating temperature, which is not limited in this embodiment.

[0169] The control unit in the hot water supply system can control the first heat exchanger to transfer the waste heat of the system to be cooled in the vehicle to the water supply circuit based on the water heating instruction, so that the temperature of the hot water in the water supply circuit meets the set water temperature during the set water use time period. Specifically, if it is detected that the temperature of the electric drive device is greater than the third target temperature, the second valve is controlled to be turned on so that the electric drive waste heat exchanger transfers the heat of the electric drive cooling circuit to the water supply circuit. If it is detected that the temperature of the battery is greater than the first target temperature, the first valve is controlled to be turned on so that the battery waste heat exchanger transfers the heat of the battery cooling circuit to the water supply circuit.

[0170] Furthermore, the system for providing hot water also includes a second heat exchanger, which can transfer the heat of the air conditioning system to the water supply circuit. In addition, if the temperature of the battery is less than or equal to the first target temperature, the temperature of the electric drive device is less than or equal to the third target temperature, and the air conditioning system is not working, in order to ensure that the target heating temperature can be heated to meet the user's requirements, the control unit can control the compressor of the air conditioning system to work, and use the heat generated by the compressor compressing the refrigerant to heat the water in the water supply circuit.

[0171] In the above embodiment, the waste heat of the system to be cooled in the vehicle can be used to heat the water in the water supply circuit without the need for an additional electric water heater, which can effectively save energy.

[0172] Corresponding to the above method for providing hot water, the present application embodiment also discloses an electronic device, see Fig.12 As shown, the electronic device includes:

[0173] Memory 200 and processor 210;

[0174] The memory 200 is connected to the processor 210 and is used to store programs;

[0175] The processor 210 is used to implement the method for providing hot water disclosed in any of the above embodiments by running the program stored in the memory 200.

[0176] Specifically, the electronic device may further include: a bus, a communication interface 220 , an input device 230 and an output device 240 .

[0177] The processor 210, the memory 200, the communication interface 220, the input device 230 and the output device 240 are connected to each other via a bus.

[0178] A bus may include a pathway that transfers information between components of a computer system.

[0179] The processor 210 may be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. It may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0180] The processor 210 may include a main processor, and may also include a baseband chip, a modem, and the like.

[0181] The memory 200 stores a program for executing the technical solution of the present application, and may also store an operating system and other key services. Specifically, the program may include a program code, and the program code includes computer operation instructions. More specifically, the memory 200 may include a read-only memory (ROM), other types of static storage devices that can store static information and instructions, a random access memory (RAM), other types of dynamic storage devices that can store information and instructions, a disk storage, a flash, and the like.

[0182] The input device 230 may include a device for receiving data and information input by a user, such as a keyboard, a mouse, a camera, a scanner, a light pen, a voice input device, a touch screen, a pedometer, or a gravity sensor.

[0183] Output device 240 may include devices that allow information to be output to a user, such as a display screen, printer, speaker, etc.

[0184] The communication interface 220 may include any transceiver or the like to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0185] The processor 210 executes the program stored in the memory 200 and calls other devices, which can be used to implement each step of the method for providing hot water provided in the above embodiment of the present application.

[0186] Another embodiment of the present application also provides a vehicle. Fig.13 As shown, the vehicle includes a system 300 for providing hot water.

[0187] The vehicle provided in this embodiment belongs to the same application concept as the method for providing hot water provided in the above-mentioned embodiments of the present application, can execute the method for providing hot water provided in any of the above-mentioned embodiments of the present application, and has functional modules and beneficial effects corresponding to executing the above-mentioned method for providing hot water. For technical details not fully described in this embodiment, please refer to the specific processing content of the method for providing hot water provided in the above-mentioned embodiments of the present application, which will not be repeated here.

[0188] In addition to the above methods and devices, the embodiments of the present application may also be a computer program product, which includes computer program instructions. When the computer program instructions are executed by a processor, the processor executes each step of the method for providing hot water provided in the above embodiments.

[0189] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages ​​such as Java, C++, etc., and also conventional procedural programming languages ​​such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0190] The computer program product may be implemented in hardware, software or a combination thereof. In one optional embodiment, the computer program product is embodied as a computer storage medium, and in another optional embodiment, the computer program product is embodied as a software product, such as a software development kit (SDK).

[0191] In addition, the embodiments of the present application may also be a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the processor executes each step of the method for providing hot water provided in the above embodiments.

[0192] The computer readable storage medium may adopt any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may include, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0193] For the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for the present application.

[0194] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0195] The steps in the methods of each embodiment of the present application can be adjusted in order, combined and deleted according to actual needs, and the technical features recorded in each embodiment can be replaced or combined.

[0196] The modules and sub-modules in the devices and terminals in the various embodiments of the present application can be combined, divided and deleted according to actual needs.

[0197] In the several embodiments provided in the present application, it should be understood that the disclosed terminals, devices and methods can be implemented in other ways. For example, the terminal embodiments described above are only schematic, for example, the division of modules or submodules is only a logical function division, and there may be other division methods in actual implementation, such as multiple submodules or modules can be combined or integrated into another module, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0198] The modules or submodules described as separate components may or may not be physically separated, and the components of the modules or submodules may or may not be physical modules or submodules, that is, they may be located in one place, or they may be distributed on multiple network modules or submodules. Some or all of the modules or submodules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0199] In addition, each functional module or submodule in each embodiment of the present application may be integrated into one processing module, or each module or submodule may exist physically separately, or two or more modules or submodules may be integrated into one module. The above-mentioned integrated modules or submodules may be implemented in the form of hardware or in the form of software functional modules or submodules.

[0200] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0201] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly by hardware, software units executed by a processor, or a combination of the two. The software units may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0202] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0203] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A system for providing hot water, characterized in that: include: A system to be cooled, a water supply circuit for providing hot water, and a first heat exchanger arranged on the water supply circuit; The first heat exchanger is used to transfer the waste heat of the system to be cooled to the water supply circuit; the system to be cooled includes at least one of a battery system and an electric drive system.

2. The system according to claim 1, characterized in that Also included is a first control unit; The battery system includes a battery, a battery temperature sensor for detecting the battery temperature, and a battery cooling circuit for cooling the battery; the first heat exchanger includes a battery waste heat exchanger, and the battery waste heat exchanger is connected to the water supply circuit through a first valve; The first control unit is electrically connected to the battery temperature sensor and the first valve respectively; The first control unit is used for controlling the first valve to be turned on when the temperature of the battery is greater than a first target temperature, so that the battery waste heat exchanger transfers the heat of the battery cooling circuit to the water supply circuit.

3. The system according to claim 2, characterized in that The battery system further includes a battery cooling heat exchanger disposed on the battery cooling circuit; When the temperature of the battery is greater than a second target temperature, the battery cooling heat exchanger transfers heat of the battery cooling circuit to the air conditioning system; the second target temperature is higher than the first target temperature.

4. The system according to claim 1, characterized in that Also included is a second control unit; The electric drive system includes an electric drive device, an electric drive temperature sensor for detecting the temperature of the electric drive device, and an electric drive cooling circuit for cooling the electric drive device, the first heat exchanger includes an electric drive waste heat exchanger, and the electric drive waste heat exchanger is connected to the water supply circuit through a second valve; The second control unit is electrically connected to the electric drive temperature sensor and the second valve respectively; The second control unit is used to control the second valve to be turned on when the temperature of the electric drive equipment is greater than the third target temperature, so that the electric drive waste heat exchanger transfers the heat of the electric drive cooling circuit to the water supply circuit.

5. The system according to claim 1, characterized in that Also includes a second heat exchanger disposed on the water supply loop; The second heat exchanger is used to transfer waste heat of the air conditioning system to the water supply circuit.

6. The system according to claim 5, characterized in that Also included is a third control unit; The second heat exchanger is connected to the water supply circuit through a third valve; The third control unit is used to control the third valve to be turned on when the air-conditioning system is started, so that the second heat exchanger transfers the waste heat of the air-conditioning system to the water supply circuit.

7. The system according to claim 5, characterized in that It also includes a water storage tank arranged on the water supply circuit; the first heat exchanger includes a battery waste heat heat exchanger and an electric drive waste heat heat exchanger, the battery waste heat exchanger is connected to the water supply circuit through a first valve, the electric drive waste heat exchanger is connected to the water supply circuit through a second valve, and the second heat exchanger is connected to the water supply circuit through a third valve; The first end of the water storage tank is respectively connected to the first end of the first valve, the first end of the second valve and the first end of the third valve; The second end of the first valve is connected to the first end of the battery waste heat exchanger, the second end of the second valve is connected to the first end of the electric drive waste heat exchanger, the second end of the third valve is connected to the first end of the second heat exchanger, and the second end of the battery waste heat exchanger, the second end of the electric drive waste heat exchanger and the second end of the second heat exchanger are all connected to the second end of the water tank.

8. The system according to claim 5, characterized in that It also includes a water storage tank arranged on the water supply circuit; the first heat exchanger includes a battery waste heat heat exchanger and an electric drive waste heat heat exchanger, the battery waste heat exchanger is connected to the water supply circuit through a first valve, and the electric drive waste heat exchanger is connected to the water supply circuit through a second valve; The first end of the second heat exchanger is connected to the first end of the water storage tank, and the second end of the second heat exchanger is connected to the second end of the water storage tank, the first end of the first valve and the first end of the second valve respectively; The second end of the first valve is connected to the first end of the battery waste heat exchanger, and the second end of the battery waste heat exchanger is connected to the second end of the water tank; the second end of the second valve is connected to the first end of the electric drive waste heat exchanger, and the second end of the electric drive waste heat exchanger is connected to the second end of the water tank.

9. A vehicle, characterized in that: A system for providing hot water comprising the system described in any one of claims 1 to 8.

10. A method for providing hot water, characterized in that: The method is applied to a system for providing hot water, the system for providing hot water comprising a system to be cooled, a water supply circuit for providing hot water, and a first heat exchanger arranged on the water supply circuit; the method comprises: Obtaining a water heating instruction; the water heating instruction includes a set water temperature in a set water use time period; Control the first heat exchanger to transfer the waste heat of the system to be cooled to the water supply circuit so that the temperature of the hot water in the water supply circuit meets the set water temperature during the set water use time period; the system to be cooled includes at least one of a battery system and an electric drive system.

11. An electronic device, characterized in that: include: Memory and processor; Wherein, the memory is used to store programs; The processor is configured to implement the method according to claim 10 by running the program in the memory.

12. A computer program product, characterized in that The computer program product comprises a computer program or a computer instruction, and when the computer program or the computer instruction is executed by a processor, the method according to claim 10 is implemented.

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