Vehicle, battery management device, and heat pump unit

Abstract

The utility model provides a vehicle, a battery management device and a heat pump unit, the heat pump unit comprises a refrigerating system, a heat exchange system and a heating part, the refrigerating system comprises a first heat exchange part and a second heat exchange part which are connected in a refrigerant flow path in series, the first heat exchange part is suitable for exchanging heat with outdoor air, and the second heat exchange part is suitable for exchanging heat with outdoor air; the heat exchange system comprises a third heat exchange part and a fourth heat exchange part which are connected in parallel, the third heat exchange part is connected with an adjusting object in series, the fourth heat exchange part is connected with the adjusting object in series, the third heat exchange part is suitable for exchanging heat with outdoor air, the fourth heat exchange part is in thermal connection with the second heat exchange part, and the heating part is connected with the third heat exchange part in series. And a heat exchange medium in the heat exchange system is controlled to be started and heated, so that an adjusting object is heated. According to the heat pump unit, the heating part and the third heat exchange part are connected in series instead of being arranged on the flow path where the fourth heat exchange part with the high use frequency is located, the flow resistance of the heating part to the heat exchange medium loop is reduced, and the energy consumption of a heat pump system is reduced.

Description

Technical Field

[0001] The present application relates to battery temperature control technology, and in particular to a vehicle, a battery management device, and a heat pump unit. Background Art

[0002] Affected by ambient temperature and workload, the temperature of the battery pack of an electric vehicle needs to be adjusted to keep it at a suitable operating temperature.

[0003] In related technology, a temperature control system that combines a heat pump with a hydrothermal PTC has emerged. The temperature control system includes a refrigeration cycle system and a hydrothermal system. The refrigeration cycle system has a first heat exchange part and a second heat exchange part connected in series. The first heat exchange part exchanges heat with the outdoor air, and the second heat exchange part is located inside the system. The hydrothermal system has a third heat exchange part and a fourth heat exchange part connected in parallel with the battery pack. The third heat exchange part exchanges heat with the outdoor air, and the second heat exchange part is thermally connected to the fourth heat exchange part. The hydrothermal PTC is connected in series with the fourth heat exchange part. When the battery pack needs to be cooled under low outdoor conditions, the third heat exchange part is used to dissipate heat to the outside. When the battery needs to be heated under low outdoor conditions, the hydrothermal PTC is turned on to heat the fluid in the branch where the fourth heat exchange part is located. When the battery pack needs to be cooled under high outdoor temperatures, the refrigeration cycle system is started, with the first heat exchange part acting as a condenser, the second heat exchange part acting as an evaporator, and the second heat exchange part used to cool the fourth heat exchange part. When the battery pack needs to be heated under high outdoor temperature conditions, the refrigeration cycle system is started, the first heat exchange part is used as an evaporator, the second heat exchange part is used as a condenser, and the second heat exchange part is used to heat the fourth heat exchange part.

[0004] However, this temperature control system still has some defects. Considering the heat exchange between the third heat exchange part and the outdoor air, the hydrothermal PTC is generally not connected in series with the third heat exchanger, but in series with the fourth heat exchange part. However, in the four modes, it is mostly used in the branch where the fourth heat exchange part is located. In this way, the hydrothermal PTC is connected in series with the fourth heat exchange part, which increases the flow resistance of the coolant circuit and will increase the energy consumption of the water pump in the long run. Utility Model Content

[0005] The present application provides a heat pump unit, which can reduce the flow resistance of the coolant circuit and reduce the energy consumption of the water pump.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] In the first aspect, the present application provides a heat pump unit for regulating the temperature of a regulation object, comprising: a refrigeration system, the refrigeration system comprising a first heat exchange part and a second heat exchange part connected in series in a refrigerant flow path, the first heat exchange part being suitable for exchanging heat with outdoor air, and the refrigeration system being configured so that one of the first heat exchange part and the second heat exchange part serves as a heat-releasing condenser, and the other serves as a heat-absorbing evaporator; a heat exchange system, the heat exchange system comprising a third heat exchange part and a fourth heat exchange part connected in parallel, the third heat exchange part being connected in series with the regulation object, the fourth heat exchange part being connected in series with the regulation object, the third heat exchange part being suitable for exchanging heat with outdoor air, and the fourth heat exchange part being thermally connected to the second heat exchange part; a heating part, the heating part being connected in series with the third heat exchange part to controllably open and heat the heat exchange medium in the heat exchange system, thereby heating the regulation object.

[0008] In one possible embodiment, the third heat exchange part includes: a heat exchange part; and a heat insulation part, wherein the heat insulation part is movably arranged on at least one side of the heat exchange part, and the heat insulation part is configured to controllably cover the outside of the heat exchange part when the heating part is turned on.

[0009] In one possible embodiment, the third heat exchange part includes: a driving mechanism for driving the insulation part to move, the driving mechanism includes a motor, a gear and a rack, the motor is arranged on the heat exchange part, the gear is arranged on the output shaft of the motor, and the rack is formed on the insulation part and meshes with the gear.

[0010] In a possible implementation manner, the second heat exchange part and the fourth heat exchange part are separately provided or integrated into one body.

[0011] In one possible embodiment, the heat exchange system also includes: a switching valve, the switching valve having a first opening, a second opening and a third opening, the first opening being connected to the third heat exchange part, the second opening being connected to the fourth heat exchange part, and the third opening being connected to the regulation object; the switching valve is configured to switch in a controlled manner between connecting the first opening and the third opening, and connecting the second opening and the third opening.

[0012] In one possible embodiment, the heat exchange system further includes: an expansion water tank connected to the flow path of the heat exchange system to accommodate the expansion of the heat exchange medium and compensate for the expansion and contraction of the heat exchange medium; and / or a circulation pump connected to the flow path of the heat exchange system to increase the pressure of the heat exchange medium.

[0013] In one possible embodiment, the heat exchange system also includes a compressor, a reversing device and a throttling device connected in series in the refrigerant flow path; the throttling device is arranged between the first heat exchange part and the second heat exchange part; the reversing device is configured to: connect the exhaust port of the compressor with the inlet of the first heat exchange part and at the same time connect the outlet of the second heat exchange part with the air inlet of the compressor, or connect the exhaust port of the compressor with the inlet of the second heat exchange part and at the same time connect the outlet of the first heat exchange part with the air inlet of the compressor.

[0014] In a possible embodiment, the heat exchange system further includes: a heat exchange fan, which is arranged on one side of the third heat exchange part to promote the formation of a heat exchange airflow for exchanging heat with the third heat exchange part.

[0015] In a second aspect, the present application provides a battery management device, comprising a battery pack and a heat pump unit according to any one of the above items, wherein the battery pack is configured as a regulation object.

[0016] In a third aspect, the present application provides a vehicle comprising the battery management device described above.

[0017] In the heat pump unit of the present application, the first heat exchange part of the refrigeration system is suitable for exchanging heat with outdoor air, the third heat exchange part and the fourth heat exchange part of the heat exchange system are respectively connected in series with the regulation object, the third heat exchange part is suitable for exchanging heat with outdoor air, the fourth heat exchange part is thermally connected to the second heat exchange part of the refrigeration system, and the heating part is connected in series with the third heat exchange part to controllably open and heat the heat exchange medium in the heat exchange system, thereby heating the regulation object. In this way, the heating part is no longer arranged on the flow path of the fourth heat exchange part which is more frequently used, thereby reducing the flow resistance of the heat exchange medium circuit caused by the heating part and reducing the energy consumption of the heat pump system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of a heat pump unit in one embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of a heat pump unit cooling and heating a regulated object at low outdoor temperatures in one embodiment of the present application;

[0021] Figure 3 This is a schematic diagram of a heat pump unit cooling a regulated object at high outdoor temperatures in one embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of a heat pump unit heating a regulated object at high temperatures outdoors in one embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the third heat exchange part in the heat pump unit in one embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the driving mechanism in the third heat exchange part in one embodiment of the present application.

[0025] Description of reference numerals:

[0026] 10. Regulation object; 110. First heat exchange unit; 120. Second heat exchange unit; 130. Compressor; 140. First reversing valve; 142. First valve port; 144. Second valve port; 146. Third valve port; 150. Second reversing valve; 152. Fourth valve port; 154. Fifth valve port; 156. Sixth valve port; 160. Throttling device; 170. Gas-liquid separator; 210. Third heat exchange unit; 212. Heat exchange unit; 214. Insulation unit; 216. Motor; 218. Gear; 219. Rack; 220. Fourth heat exchange unit; 230. Switching valve; 232. First opening; 234. Second opening; 236. Third opening; 240. Expansion tank; 250. Circulation pump; 260. Heat exchange fan; 300. Heating unit. DETAILED DESCRIPTION

[0027] In a heat pump system of related art, a refrigeration cycle system includes a first heat exchanger and a second heat exchanger connected in series. The first heat exchanger exchanges heat with the outdoor air, and the second heat exchanger is located within the system. A hydrothermal system includes a third heat exchanger and a fourth heat exchanger connected in parallel with the battery pack. The third heat exchanger exchanges heat with the outdoor air, and the second heat exchanger is thermally connected to the fourth heat exchanger. A hydrothermal PTC is connected in series with the fourth heat exchanger. When the battery pack needs to be cooled in low outdoor conditions, the third heat exchanger is used to dissipate heat outward. When the battery needs to be heated in low outdoor conditions, the hydrothermal PTC is activated to heat the fluid in the branch where the fourth heat exchanger is located. When the battery pack needs to be cooled in higher outdoor temperatures, the refrigeration cycle system is activated, with the first heat exchanger acting as a condenser and the second heat exchanger acting as an evaporator. The fourth heat exchanger is cooled by the second heat exchanger. When the battery pack needs to be heated in higher outdoor temperatures, the refrigeration cycle system is activated, with the first heat exchanger acting as an evaporator and the second heat exchanger acting as a condenser. The fourth heat exchanger is heated by the second heat exchanger.

[0028] However, this temperature control system still has some defects. Considering the heat exchange between the third heat exchange part and the outdoor air, the hydrothermal PTC is generally not connected in series with the third heat exchanger, but in series with the fourth heat exchange part. However, in the four modes, it is mostly used in the branch where the fourth heat exchange part is located. In this way, the hydrothermal PTC is connected in series with the fourth heat exchange part, which increases the flow resistance of the coolant circuit and will increase the energy consumption of the water pump in the long run.

[0029] Based on this, the present application provides a heat pump unit, in which the first heat exchange part of the refrigeration system is suitable for exchanging heat with outdoor air, the third heat exchange part and the fourth heat exchange part of the heat exchange system are respectively connected in series with the regulation object, the third heat exchange part is suitable for exchanging heat with outdoor air, the fourth heat exchange part is thermally connected to the second heat exchange part of the refrigeration system, and the heating part is connected in series with the third heat exchange part to controllably open and heat the heat exchange medium in the heat exchange system, thereby heating the regulation object. In this way, the heating part is no longer arranged on the flow path of the fourth heat exchange part which is used more frequently, thereby reducing the flow resistance of the heat exchange medium circuit caused by the heating part and reducing the energy consumption of the heat pump system.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figures 1 to 6 , the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0031] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0032] An embodiment of the present application provides a heat pump unit, which is used to regulate the temperature of a room and may include a refrigeration system and a heat exchange system. The refrigeration system may include a first heat exchange part 110 and a second heat exchange part 120 connected in series in the refrigerant flow path, the first heat exchange part 110 being suitable for exchanging heat with outdoor air, and the refrigeration system is configured so that one of the first heat exchange part 110 and the second heat exchange part 120 serves as a heat-releasing condenser and the other as a heat-absorbing evaporator. The heat exchange system may include a third heat exchange part 210 and a fourth heat exchange part 220 connected in parallel, the third heat exchange part 210 being connected in series with the regulation object 10, the fourth heat exchange part 220 being connected in series with the regulation object 10, the third heat exchange part 210 being suitable for exchanging heat with outdoor air, and the fourth heat exchange part 220 being thermally connected to the second heat exchange part 120. The heating part 300 is connected in series with the third heat exchange part 210 to controllably open and heat the heat exchange medium in the heat exchange system, thereby heating the regulation object 10.

[0033] In this embodiment, the refrigeration system is a compression refrigeration cycle system. Specifically, the refrigeration system may further include a compressor 130, a throttling element, a gas-liquid separator 170, and a reversing device.

[0034] The compressor 130 is the power source of the refrigeration system. It has an exhaust port and an air return port. The compressor 130 increases the pressure and temperature of the refrigerant vapor through compression, compressing the low-temperature and low-pressure refrigerant vapor to a high-temperature and high-pressure state to create conditions for transferring the heat of the refrigerant vapor to the external environment medium and discharge it from the exhaust port.

[0035] The first heat exchange part 110 and the second heat exchange part 120 are both heat exchange devices, which utilize the air in their respective environments or other heat exchange equipment for heat exchange.

[0036] A throttling element is disposed between the first heat exchange section 110 and the second heat exchange section 120 to reduce the pressure of the high-pressure refrigerant liquid from one heat exchange section 212 to a low-pressure, low-temperature refrigerant, which is then passed into the other heat exchange section 212. There are various forms of throttling elements, such as capillary tubes, throttling short tubes, thermal expansion valves, electronic expansion valves, and float valves.

[0037] The reversing device is used to switch the flow direction of the refrigerant, so that the exhaust port of the compressor 130 is connected to the inlet of the first heat exchange part 110 and the outlet of the second heat exchange part 120 is connected to the air inlet of the compressor 130 at the same time, or, the exhaust port of the compressor 130 is connected to the inlet of the second heat exchange part 120 and the outlet of the first heat exchange part 110 is connected to the air inlet of the compressor 130 at the same time.

[0038] In some specific embodiments, the reversing device may include a first reversing valve 140 and a second reversing valve 150. The first reversing valve 140 is disposed at the exhaust port of the compressor 130, and the second reversing valve 150 is disposed at the return port of the compressor 130. The first reversing valve 140 has a first valve port 142, a second valve port 144, and a third valve port 146. The first valve port 142 is connected to the exhaust port of the compressor 130, and the second valve port 144 is connected to the first heat exchange portion 110. The second reversing valve 150 has a fourth valve port 152, a fifth valve port 154, and a sixth valve port 156. The fourth valve port 152 is connected to the second heat exchange portion 120, and the fifth valve port 154 is connected to the return port of the compressor 130. The third valve port 146 is connected between the second heat exchange portion 120 and the fourth valve port 152, and the sixth valve port 156 is connected between the second valve port 144 and the first heat exchange portion 110.

[0039] In this way, when the first reversing valve 140 and the second reversing valve 150 are switched to: the first valve port 142 is connected to the second valve port 144, and the fourth valve port 152 is connected to the fifth valve port 154, the high-temperature and high-pressure refrigerant discharged from the compressor 130 is discharged to the first heat exchange part 110 through the first valve port 142 and the second valve port 144 in sequence. The high-temperature and high-pressure refrigerant can exchange heat and cool down when flowing through the first heat exchange part 110 to form a low-temperature and high-pressure refrigerant. After being discharged from the first heat exchange part 110, the low-temperature and high-pressure refrigerant flows through the throttling element again, and is throttled and reduced in pressure by the throttling element to form a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant is discharged into the second heat exchange part 120, evaporates and absorbs heat in the second heat exchange part 120, and reduces the temperature of the surrounding air or the equipment to be heat exchanged. Finally, after being discharged from the second heat exchange section 120, the refrigerant passes through the fourth valve port 152, the fifth valve port 154, the gas-liquid separator 170, and the return air port of the compressor 130, and then returns to the compressor 130 to be compressed again, thus completing the cycle. In other words, in this process, the first heat exchange section 110 acts as a condenser, and the second heat exchange section 120 acts as an evaporator.

[0040] When the first reversing valve 140 and the second reversing valve 150 are switched so that the first valve port 142 is connected to the third valve port 146, and the sixth valve port 156 is connected to the fifth valve port 154, the high-temperature and high-pressure refrigerant discharged from the compressor 130 is discharged to the second heat exchange part 120 through the first valve port 142 and the third valve port 146 in sequence. The high-temperature and high-pressure refrigerant can exchange heat and cool down when flowing through the second heat exchange part 120 to form a low-temperature and high-pressure refrigerant. After being discharged from the second heat exchange part 120, the low-temperature and high-pressure refrigerant flows through the throttling element again, and is throttled and depressurized by the throttling element to form a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant is discharged into the first heat exchange part 110, evaporates and absorbs heat in the first heat exchange part 110, and reduces the temperature of the surrounding air or the equipment to be heat exchanged. Finally, after being discharged from the first heat exchange section 110, the refrigerant passes through the sixth valve port 156, the fifth valve port 154, the gas-liquid separator 170, and the return air port of the compressor 130 before returning to the compressor 130 to be compressed again, thus completing the cycle. In other words, in this process, the second heat exchange section 120 acts as a condenser, and the first heat exchange section 110 acts as an evaporator.

[0041] In some other embodiments, the flow path heat exchange valve group can also be implemented by a four-way valve. The principle is similar to that of the above embodiment and is well known to those skilled in the art and will not be described here.

[0042] In this embodiment, the fourth heat exchange part 220 is thermally connected to the second heat exchange part 120, and the fourth heat exchange part 220 forms a loop with the regulation object 10 through a heat exchange medium. The fourth heat exchange part 220 absorbs heat or cold from the second heat exchange part 120 through the heat exchange medium to heat or cool the regulation object 10.

[0043] In this embodiment, the heating unit 300 may be a hydrothermal PTC. When the heating unit 300 is turned on and heats the heat exchange medium in the heat exchange system, the regulated object 10 is heated.

[0044] In this embodiment, when the temperature of the adjustment object 10 is adjusted, different modes can be configured according to the outdoor temperature.

[0045] Specifically, see Figure 2 When the outdoor temperature is low and the regulated object 10 needs to be cooled, the refrigeration system does not start, and the regulated object 10 forms a loop with the third heat exchange part 210 to transfer the heat on the regulated object 10 to the third heat exchange part 210. The third heat exchange part 210 exchanges heat with the outdoor low-temperature air to take away the heat on the regulated object 10, thereby cooling the regulated object 10.

[0046] See also Figure 2 When the outdoor temperature is low and the regulated object 10 needs to be heated, the refrigeration system is not started, the heating unit 300 is started, the regulated object 10 and the third heat exchange unit 210 form a loop, and the heating unit 300 is used to heat the heat exchange medium to heat the regulated object 10.

[0047] See also Figure 3 When the outdoor temperature is high and the regulated object 10 needs to be cooled, the compressor 130 is started, and the second heat exchange part 120 is used as an evaporator. The regulated object 10 and the fourth heat exchange part 220 form a loop. The fourth heat exchange part 220 absorbs the coldness of the second heat exchange part 120 and cools the heat exchange medium to cool the regulated object 10.

[0048] See also Figure 4 When the outdoor temperature is high and the regulated object 10 needs to be heated, the compressor 130 is started, and the second heat exchange part 120 is used as a condenser. The regulated object 10 and the fourth heat exchange part 220 form a loop. The fourth heat exchange part 220 absorbs the heat of the second heat exchange part 120 and heats the heat exchange medium, thereby heating the regulated object 10.

[0049] It should be noted that the low temperature and high temperature mentioned above may be defined by one temperature threshold, and for cooling and heating, the temperature thresholds defining the low temperature and high temperature may be set to be different.

[0050] For example, when the controlled object 10 requires cooling, if the ambient temperature is greater than a, it can be considered that cooling is required in a high-temperature environment, and if the ambient temperature is less than a, it can be considered that cooling is required in a low-temperature environment. When the controlled object 10 requires heating, if the ambient temperature is greater than b, it can be considered that heating is required in a high-temperature environment, and if the ambient temperature is less than b, it can be considered that heating is required in a low-temperature environment. In some specific embodiments, a is greater than b. For example, a can be set to 5°C and b can be set to -20°C.

[0051] As can be seen from the above, in the first mode, the regulated object 10 forms a loop with the third heat exchange unit 210, cooling the regulated object in low-temperature environments. This mode is triggered less frequently. However, when the outdoor temperature is higher, the regulated object 10 forms a loop with the fourth heat exchange unit 220, triggering it more frequently. In other words, among the three modes described above, the regulated object 10 forms a loop with the fourth heat exchange unit 220 more frequently, while the regulated object 10 forms a loop with the third heat exchange unit 210 less frequently.

[0052] Because the third heat exchange unit 210 exchanges heat with the outdoor air, it is often located near the outdoors. In related art, the heating unit 300 is often not connected in series with the third heat exchange unit 210. Instead, the heating unit 300 is connected in series with the fourth heat exchange unit 220 to prevent the heat generated by the heating unit 300 from being lost to the third heat exchange unit 210, which has a higher heat dissipation efficiency. However, based on the above analysis, during use of this heat pump unit, the regulated object 10 and the fourth heat exchange unit 220 frequently form a loop. Therefore, connecting the heating unit 300 and the fourth heat exchange unit 220 in series would significantly increase the flow resistance of the coolant circuit, which would increase the energy consumption of the water pump in the long term.

[0053] Based on this, in this embodiment, the heating part 300 is connected in series with the third heat exchange part 210, which can reduce the resistance of the heating part 300 to the heat exchange medium, thereby reducing the overall energy consumption of the heat pump unit.

[0054] In some embodiments, the third heat exchange part 210 may further include a heat exchange part 212 and an insulation part 214. The insulation part 214 may be movably arranged on at least one side of the heat exchange part 212. The insulation part 214 is configured to controllably cover the outside of the heat exchange part 212 when the heating part 300 is turned on.

[0055] In this embodiment, when the heating part 300 is turned on, the insulation part 214 can be covered on at least one side surface of the heat exchange part 212 by translation. In this way, when the insulation part 214 covers the surface of the heat exchange part 212, it can insulate the heat exchange part 212 and reduce the loss of heat generated by the third heat exchange part 210 to the heating part 300.

[0056] Furthermore, the third heat exchange part 210 may also include a driving mechanism for driving the insulation part 214 to move, the driving mechanism including a motor 216, a gear 218 and a rack 219, the motor 216 is arranged on the heat exchange part 212, the gear 218 is arranged on the output shaft of the motor 216, and the rack 219 is formed on the insulation part 214 and meshes with the gear 218.

[0057] When the heating portion 300 is started, the motor 216 is controlled to start, causing the gear 218 to rotate. The gear 218 causes the rack 219 to move. The rack 219 drives the heat insulating portion 214 to translate to cover the heat exchanging portion 212 .

[0058] In some embodiments, the second heat exchange part 120 and the fourth heat exchange part 220 are separately provided or integrated into one body.

[0059] In some specific embodiments, the second heat exchange part 120 and the fourth heat exchange part 220 can be configured as two independent heat exchangers close to each other to achieve thermal connection.

[0060] In some other specific embodiments, the second heat exchange part 120 and the fourth heat exchange part 220 can also be integrated into a heat exchanger (such as a plate heat exchanger), wherein the refrigerant and the heat exchange medium are simultaneously introduced into the heat exchanger for heat exchange to achieve thermal connection.

[0061] In some embodiments, the heat exchange system may further include a switching valve 230 having a first opening 232, a second opening 234, and a third opening 236. The first opening 232 is connected to the third heat exchanger, the second opening 234 is connected to the fourth heat exchange portion 220, and the third opening 236 is connected to the regulation object 10. The switching valve 230 is configured to be controlled to switch between connecting the first opening 232 with the third opening 236 and connecting the second opening 234 with the third opening 236.

[0062] In this embodiment, the switching valve 230 is actually a three-way valve, specifically an electromagnetic or pneumatic three-way valve, which can realize automatic control.

[0063] Specifically, see Figure 2 When the outdoor temperature is low and the regulated object 10 needs to be cooled, the refrigeration system is not started, and the first opening 232 is connected to the third opening 236 to form a loop between the regulated object 10 and the third heat exchange part 210 to transfer the heat on the regulated object 10 to the third heat exchange part 210. The third heat exchange part 210 exchanges heat with the outdoor low-temperature air to take away the heat on the regulated object 10, thereby cooling the regulated object 10.

[0064] See also Figure 2 When the outdoor temperature is low and the regulated object 10 needs to be heated, the refrigeration system is not started, the heating part 300 is started, the first opening 232 is connected to the third opening 236, so that the regulated object 10 and the third heat exchange part 210 form a loop, and the heating part 300 is used to heat the heat exchange medium to heat the regulated object 10.

[0065] See also Figure 3When the outdoor temperature is high and the regulated object 10 needs to be cooled, the compressor 130 is started, the second heat exchange part 120 is used as an evaporator, the second opening 234 is connected to the third opening 236, so that the regulated object 10 and the fourth heat exchange part 220 form a loop, the fourth heat exchange part 220 absorbs the cold energy of the second heat exchange part 120 and cools the heat exchange medium to cool the regulated object 10.

[0066] See also Figure 4 When the outdoor temperature is high and the regulated object 10 needs to be heated, the compressor 130 is started to make the second heat exchange part 120 serve as a condenser, and the second opening 234 is connected to the third opening 236 to form a loop between the regulated object 10 and the fourth heat exchange part 220. The fourth heat exchange part 220 absorbs the heat of the second heat exchange part 120 and heats the heat exchange medium, thereby heating the regulated object 10.

[0067] In some embodiments, the heat exchange system may further include an expansion tank 240 connected to the flow path of the heat exchange system to accommodate the expansion of the flow path of the heat exchange system and compensate for the expansion and contraction of the flow path of the heat exchange system.

[0068] When the heat exchange medium heats up, the volume of the medium in the system increases. Without room to accommodate the heat exchange medium, it expands, increasing pressure within the heat exchange system and impacting normal operation. Expansion tank 240 accommodates this expansion, minimizing pressure fluctuations and improving system safety and reliability. Similarly, if the heat exchange system leaks or the heat exchange medium cools, the water level in expansion tank 240 drops, replenishing the system. Expansion tank 240 also stabilizes system pressure and removes air released during the heating process.

[0069] In some embodiments, the heat exchange system may further include a circulation pump 250 connected to the flow path of the heat exchange system to increase the pressure of the fluid in the heat exchange system. The circulation pump 250 may be a centrifugal pump to increase the pressure of the heat exchange medium and improve heat exchange efficiency.

[0070] In some embodiments, the heat exchange system may further include a heat exchange fan 260 , which is disposed on one side of the third heat exchange portion 210 to facilitate formation of a heat exchange airflow for heat exchange with the third heat exchange portion 210 .

[0071] In addition, the present application also provides a battery management device, which may include a heat pump unit in any of the above-mentioned embodiments, wherein the battery management device may also include a battery pack, and the battery pack is configured as an adjustment object 10. That is, the heat pump unit in any of the above-mentioned embodiments heats or cools the battery pack, and since the heating part 300 is connected in series with the third heat exchange part 210, the resistance formed by the heating part 300 to the heat exchange medium is reduced, thereby reducing the operating cost of the heat pump unit.

[0072] In addition, the present application also provides a vehicle, which includes the above-mentioned battery management device.

[0073] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat pump unit for regulating the temperature of a regulation object (10), characterized in that: include: A refrigeration system comprising a first heat exchange portion (110) and a second heat exchange portion (120) connected in series in a refrigerant flow path, wherein the first heat exchange portion (110) is adapted to exchange heat with outdoor air, and the refrigeration system is configured such that one of the first heat exchange portion (110) and the second heat exchange portion (120) serves as a condenser for releasing heat, and the other serves as an evaporator for absorbing heat; A heat exchange system, the heat exchange system comprising a third heat exchange part (210) and a fourth heat exchange part (220) connected in parallel, the third heat exchange part (210) being connected in series with the regulated object (10), the fourth heat exchange part (220) being connected in series with the regulated object (10), the third heat exchange part (210) being suitable for exchanging heat with outdoor air, and the fourth heat exchange part (220) being thermally connected to the second heat exchange part (120); A heating part (300) is connected in series with the third heat exchange part (210) to controllably start and heat the heat exchange medium in the heat exchange system, thereby heating the regulated object (10).

2. The heat pump unit according to claim 1, characterized in that: The third heat exchange part (210) includes: heat exchange portion (212); A heat insulating portion (214) is movably disposed on at least one side of the heat exchange portion (212), and the heat insulating portion (214) is configured to controllably cover the outside of the heat exchange portion (212) when the heating portion (300) is turned on.

3. The heat pump unit according to claim 2, characterized in that: The third heat exchange part (210) includes: A driving mechanism is used to drive the heat insulating portion (214) to move, and the driving mechanism includes a motor (216), a gear (218) and a rack (219). The motor (216) is arranged on the heat exchange portion (212), the gear (218) is arranged on the output shaft of the motor (216), and the rack (219) is formed on the heat insulating portion (214) and meshes with the gear (218).

4. The heat pump unit according to any one of claims 1 to 3, characterized in that: The second heat exchange part (120) and the fourth heat exchange part (220) are separately provided or integrated.

5. The heat pump unit according to any one of claims 1 to 3, characterized in that: The heat exchange system further comprises: a switching valve (230), the switching valve (230) having a first opening (232), a second opening (234), and a third opening (236), the first opening (232) being connected to the third heat exchange portion (210), the second opening (234) being connected to the fourth heat exchange portion (220), and the third opening (236) being connected to the regulated object (10); The switching valve (230) is configured to be controlled to switch between connecting the first opening (232) and the third opening (236) and connecting the second opening (234) and the third opening (236).

6. The heat pump unit according to any one of claims 1 to 3, characterized in that: The heat exchange system further comprises: an expansion water tank (240), the expansion water tank (240) being connected to the flow path of the heat exchange system to accommodate the expansion of the heat exchange medium and to compensate for the expansion and contraction of the heat exchange medium; and / or, A circulation pump (250) is connected to the flow path of the heat exchange system to increase the pressure of the heat exchange medium.

7. The heat pump unit according to any one of claims 1 to 3, characterized in that: The heat exchange system further includes a compressor (130), a reversing device, and a throttling device (160) connected in series in the refrigerant flow path; The throttling device (160) is arranged between the first heat exchange part (110) and the second heat exchange part (120); The reversing device is configured to: connect the exhaust port of the compressor (130) with the inlet of the first heat exchange part (110) and simultaneously connect the outlet of the second heat exchange part (120) with the air inlet of the compressor (130); or connect the exhaust port of the compressor (130) with the inlet of the second heat exchange part (120) and simultaneously connect the outlet of the first heat exchange part (110) with the air inlet of the compressor (130).

8. The heat pump unit according to any one of claims 1 to 3, characterized in that: The heat exchange system further comprises: A heat exchange fan (260) is provided on one side of the third heat exchange portion (210) to facilitate the formation of a heat exchange airflow for heat exchange with the third heat exchange portion (210).

9. A battery management device, characterized in that: The heat pump unit comprises a battery pack and the heat pump unit according to any one of claims 1 to 8, wherein the battery pack is configured as the regulation object (10).

10. A vehicle, characterized in that: The device comprises a battery management device according to claim 9.

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