Energy management system and control method and control device thereof

Abstract

The invention provides an energy management system and a control method and a control device thereof, which can realize linkage temperature control of an inverter and a battery and is beneficial to improving the energy utilization rate. The energy management system includes: a battery; the inverter is arranged to be in linkage with the battery for temperature control; the heat exchange device comprises a heating flow path, a refrigerating flow path, a first waste heat flow path and a control valve assembly, the heating flow path is arranged to provide a heating medium for the inverter and the battery, and the refrigerating flow path is arranged to provide a refrigerating medium for the inverter and the battery; the first waste heat flow path is arranged to be communicated with the inverter and the battery so as to enable the inverter and the battery to exchange heat to realize waste heat utilization; the control valve assembly is arranged to control connection and disconnection of the heating flow path, the inverter and the battery, control connection and disconnection of the refrigerating flow path, the inverter and the battery and control connection and disconnection of the first waste heat flow path, the inverter and the battery.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of thermal management technology, and specifically refers to an energy management system, its control method, and control device. Background Art

[0002] Inverters have requirements for operating temperature, which cannot be too high or too low and need to be within a certain temperature range. However, the operating environments of inverters are diverse, and the air temperature may also change significantly over time in the same environment, resulting in the need for the inverter to sometimes have a refrigeration requirement to lower the operating temperature and sometimes have a heating requirement to increase the operating temperature. Therefore, currently, inverters need to be equipped with both a heat dissipation device and a heating device, and the heat dissipation device and the heating device operate independently, resulting in low energy utilization efficiency. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide an energy management system, its control method, and control device, which can achieve the linked temperature control of the inverter and the battery and is beneficial to improving energy utilization efficiency.

[0004] An embodiment of this application provides an energy management system, including: a battery; an inverter, the inverter being configured to perform linked temperature control with the battery; and a heat exchange device, including a heating flow path, a refrigeration flow path, a first waste heat flow path, and a control valve assembly. The heating flow path is configured to supply a heating medium to the inverter and the battery, the refrigeration flow path is configured to supply a refrigeration medium to the inverter and the battery, the first waste heat flow path is configured to connect the inverter and the battery to enable heat exchange between the inverter and the battery for waste heat utilization; the control valve assembly is configured to: control the on-off of the heating flow path with the inverter and the battery, control the on-off of the refrigeration flow path with the inverter and the battery, and control the on-off of the first waste heat flow path with the inverter and the battery.

[0005] The energy management system provided by the embodiment of this application can achieve the linked temperature control of the inverter and the battery through the heat exchange device. It is equivalent to the inverter and the battery sharing the same set of heat exchange devices, which can save a set of heat exchange devices, thus being beneficial to simplifying the structure. Moreover, the inverter and the battery can also achieve waste heat utilization through the first waste heat flow path, which is beneficial to reducing the heat dissipated into the environment and improving energy utilization efficiency.

[0006] An embodiment of this application also provides a control method for the energy management system as described in the above embodiment. The control method includes:

[0007] Determine the heat exchange requirements of the inverter and / or the battery;

[0008] Control the heat exchange device according to the heat exchange requirements of the inverter and / or the battery.

[0009] The embodiment of the present application also provides a control device, including a processor and a memory storing a computer program. When the processor executes the computer program, the steps of the control method described in the above embodiment are implemented. Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of an energy management system provided by some embodiments of the present application;

[0011] Figure 2 It is a schematic structural diagram of an energy management system provided by other embodiments of the present application;

[0012] Figure 3 It is a schematic structural diagram of an energy management system provided by still other embodiments of the present application;

[0013] Figure 4 It is a schematic structural diagram of a battery provided by some embodiments of the present application;

[0014] Figure 5 It is a schematic structural diagram of a control method provided by some embodiments of the present application;

[0015] Figure 6 It is a schematic diagram of the working principle of an energy management system provided by some embodiments of the present application under the first working condition;

[0016] Figure 7 It is a schematic diagram of the working principle of an energy management system provided by some embodiments of the present application under the second working condition;

[0017] Figure 8 It is a schematic diagram of the working principle of an energy management system provided by some embodiments of the present application under the third working condition;

[0018] Figure 9 It is a schematic diagram of the working principle of an energy management system provided by some embodiments of the present application under the fourth working condition;

[0019] Figure 10 It is a schematic diagram of the partial control logic principle of an energy management system provided by some embodiments of the present application;

[0020] Figure 11 It is a schematic diagram of the partial control logic principle of an energy management system provided by some embodiments of the present application.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1 Inverter, 11 First delivery port, 12 Second delivery port, 13 Third delivery port;

[0023] 2 battery, 21 heat exchange flow channel, 22 sixth control valve, 23 seventh control valve, 24 fourth delivery port, 25 fifth delivery port, 26 sixth delivery port, 27 temperature sensor, 28 battery cell;

[0024] 311 refrigeration main circuit, 312 first refrigeration branch circuit, 313 second refrigeration branch circuit, 321 heating main circuit, 322 first heating branch circuit, 323 second heating branch circuit, 33 first waste heat flow circuit, 34 second waste heat flow circuit, 351 liquid return main circuit, 352 first liquid return branch circuit, 353 second liquid return branch circuit, 36 semiconductor refrigeration component, 37 liquid storage tank, 371 water inlet, 372 drain outlet, 373 drain pipe, 374 switch, 381 first control valve, 382 second control valve, 383 third control valve, 384 fourth control valve, 385 fifth control valve, 391 first pump, 392 second pump, 393 third pump, 394 liquid supply flow circuit, 395 liquid infusion flow circuit. DETAILED DESCRIPTION

[0025] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0026] This application is made based on the inventor's understanding of the following facts:

[0027] Batteries and inverters have similar characteristics. In other words, batteries also have requirements for operating temperature, which cannot be too high or too low, and need to be within a certain temperature range. However, the working environment of batteries is also diverse, and the temperature may change drastically over time in the same environment, resulting in the battery sometimes having a cooling demand to lower the working temperature, and sometimes having a heating demand to increase the working temperature. Therefore, at present, batteries must be equipped with both heat dissipation devices and heating devices. The heat dissipation devices and heating devices operate independently of each other, and the energy utilization rate is not high. In addition, inverters and batteries are often used in conjunction. Therefore, linking the inverter with the battery for temperature control facilitates the recovery of waste heat, is conducive to improving energy utilization, and is highly feasible.

[0028] For this reason, Figures 1 to 3 As shown, an embodiment of the present application provides an energy management system, including: a battery 2, an inverter 1 and a heat exchange device. The inverter 1 is configured to control the temperature in conjunction with the battery 2. The heat exchange device includes a heating flow path, a cooling flow path, a first waste heat flow path 33 and a control valve assembly.

[0029] The heating flow path is configured to supply a heating medium to the inverter 1 and the battery 2 to provide heat to the inverter 1 / battery 2 when the temperature of the inverter 1 / battery 2 is relatively low (i.e., when there is a heating requirement), so that the inverter 1 / battery 2 can operate within a suitable operating temperature range. The heating flow path can supply the heating medium to the inverter 1 alone, or the heating flow path can supply the heating medium to the battery 2 alone, or the heating flow path can supply the heating medium to both the inverter 1 and the battery 2 together, and can be selected according to the heat exchange requirements of the inverter 1 and the battery 2. The type of the heating medium is not limited, and it can be a gaseous heat exchange medium, a liquid heat exchange medium, or a medium that undergoes a phase change during the heat exchange process.

[0030] The cooling flow path is configured to supply a cooling medium to the inverter 1 and the battery 2 to dissipate heat from the inverter 1 / battery 2 when the temperature of the inverter 1 / battery 2 is relatively high (i.e., when there is a cooling requirement), so that the inverter 1 / battery 2 can operate within a suitable operating temperature range.. The cooling flow path can supply the cooling medium to the inverter 1 alone, or the cooling flow path can supply the cooling medium to the battery 2 alone, or the cooling flow path can supply the cooling medium to both the inverter 1 and the battery 2 together, and can be selected according to the heat exchange requirements of the inverter 1 and the battery 2. The type of the cooling medium is not limited, and it can be a gaseous heat exchange medium, a liquid heat exchange medium, or a medium that undergoes a phase change during the heat exchange process.

[0031] The first waste heat flow path 33 is configured to connect the inverter 1 and the battery 2 to enable heat exchange between the inverter 1 and the battery 2 for waste heat utilization. It can be that when the inverter 1 needs to be cooled and the battery 2 needs to be heated, the first waste heat flow path 33 can be turned on to heat the battery 2 using the waste heat of the inverter 1. It can also be that when the battery 2 needs to be cooled and the inverter 1 needs to be heated, the first waste heat flow path 33 can be turned on to heat the inverter 1 using the waste heat of the battery 2. Specifically, it can be selected according to the heat exchange requirements of the inverter 1 and the battery 2.

[0032] The control valve assembly is configured to: control the on-off of the heating flow path with the inverter 1 and the battery 2, control the on-off of the cooling flow path with the inverter 1 and the battery 2, and control the on-off of the first waste heat flow path 33 with the inverter 1 and the battery 2.

[0033] The inverter 1 and the battery 2 can both be provided with radiators. A heat exchange flow channel 21 is provided inside the radiator. The heating flow path and the cooling flow path can be communicated with the heat exchange flow channel 21 to convey a heat exchange medium (heating medium / cooling medium) into the heat exchange flow channel 21 for heat exchange with the inverter 1 and the battery 2, so as to realize the heating or cooling function of the inverter 1 and the battery 2. The heat exchange flow channel 21 for the inverter 1 to refrigerate and the heat exchange flow channel 21 for the inverter 1 to heat can be combined into one, or can be separated and independent of each other. The heat exchange flow channel 21 for the battery 2 to refrigerate and the heat exchange flow channel 21 for the battery 2 to heat can be combined into one, or can be separated and independent of each other.

[0034] Thus, the energy management system provided by the embodiment of the present application can realize the linkage temperature control of the inverter 1 and the battery 2 through the heat exchange device. It is equivalent to the inverter 1 and the battery 2 sharing the same set of heat exchange device, which can save a set of heat exchange device, so it is beneficial to simplify the structure. Moreover, the inverter 1 and the battery 2 can also utilize waste heat through the first waste heat flow path 33, which is beneficial to reducing the heat dissipated in the environment and improving the energy utilization rate.

[0035] In some exemplary embodiments, such as Figure 8 and Figure 9 shown, the heat exchange device further includes a second waste heat flow path 34. The second waste heat flow path 34 is arranged to cooperate with the inverter 1, the first waste heat flow path 33, and the battery 2 to form a waste heat circulation loop, so that the cooling medium or the heating medium circulates between the inverter 1 and the battery 2. The control valve assembly is also arranged to control the on-off of the second waste heat flow path 34 between the inverter 1 and the battery 2.

[0036] It can be, as Figure 8 shown, when the inverter 1 needs to be cooled and the battery 2 needs to be heated, the first waste heat flow path 33 is conducted. When using the waste heat of the inverter 1 to heat the battery 2, if the temperature of the medium discharged from the battery 2 is still lower than the temperature of the inverter 1, the second waste heat flow path 34 can be conducted, so that the medium discharged from the battery 2 flows back to the inverter 1 again to refrigerate the inverter 1.

[0037] It can also be, as Figure 9 shown, when the battery 2 needs to be cooled and the inverter 1 needs to be heated, the first waste heat flow path 33 is conducted. When using the waste heat of the battery 2 to heat the inverter 1, if the temperature of the medium discharged from the inverter 1 is still lower than the temperature of the battery 2, the second waste heat flow path 34 can be conducted, so that the medium discharged from the inverter 1 flows back to the battery 2 again to refrigerate the battery 2.

[0038] Therefore, when both the first waste heat flow path 33 and the second waste heat flow path 34 are conducting, that is, when the waste heat circulation loop is conducting, the heating / cooling medium can circulate between the inverter 1 and the battery 2, which is conducive to making full use of the heat of the inverter 1 and the battery 2 and reducing the heat dissipated into the environment, thereby further improving the energy utilization rate.

[0039] In some exemplary embodiments, the heat exchange device further includes a heating element, a cooling element, a power assembly, a liquid storage tank 37, and a liquid return flow path.

[0040] The liquid storage tank 37 is configured to provide a liquid heat exchange medium for the heating flow path and the cooling flow path. The shape, volume, position, etc. of the liquid storage tank 37 are not limited and can be reasonably set as needed. The type of the heat exchange medium is not limited and can be water, oil, or other solutions. The specific heat capacity of the liquid heat exchange medium is relatively high, so it is conducive to improving the heat exchange efficiency. When the heat exchange medium is water, the heat exchange device forms a water temperature regulation device.

[0041] The heating element is configured to heat the heat exchange medium to form a heating medium. Among them, the heating element can be, but is not limited to: heating wire, heating film, heating tube, phase change heating element, semiconductor cooling element 36, etc. The heating element can heat the heating flow path to realize the heating of the heat exchange medium. The heating element can also heat the liquid storage tank 37 to realize the heating of the heat exchange medium.

[0042] The cooling element is configured to cool the heat exchange medium to form a cooling medium. Among them, the cooling element can be, but is not limited to: semiconductor cooling element 36, phase change cooling element, etc. The cooling element can cool the cooling flow path to realize the cooling of the heat exchange medium. The cooling element can also cool the liquid storage tank 37 to realize the cooling of the heat exchange medium.

[0043] The liquid return flow path is configured to allow the heat exchange medium discharged from the inverter 1 and the battery 2 to flow back to the liquid storage tank 37. Among them, the liquid return flow path can be directly connected to the inverter 1 and the battery 2, or can be indirectly connected.

[0044] The control valve assembly is further configured to: control the on-off of the liquid storage tank 37, the heating flow path, the cooling flow path, and the liquid return flow path; the power assembly is configured to drive the heat exchange medium in the heat exchange device to flow.

[0045] In some exemplary embodiments, as Figure 1 shown, the inverter 1 is provided with a first delivery port 11, a second delivery port 12, and a third delivery port 13. The first delivery port 11 is connected to the cooling flow path, and the second delivery port 12 is connected to the heating flow path. The third delivery port 13 is communicated with the first delivery port 11 and the second delivery port 12, and is connected to the first waste heat flow path 33 and the liquid return flow path.

[0046] As Figure 1 andFigure 4 As shown, the battery 2 is provided with a fourth delivery port 24, a fifth delivery port 25, and a sixth delivery port 26. The fourth delivery port 24 is connected to the refrigeration flow path, and the fifth delivery port 25 is connected to the heating flow path. The sixth delivery port 26 communicates with the fourth delivery port 24 and the fifth delivery port 25, and is connected to the first waste heat flow path 33 and the liquid return flow path.

[0047] Therefore, the refrigeration medium in the refrigeration flow path enters the inverter 1 through the first delivery port 11 and is discharged from the inverter 1 through the third delivery port 13. After being discharged from the inverter 1, it can flow back to the liquid storage tank 37 through the liquid return flow path or flow to the battery 2 through the first waste heat flow path 33. The heating medium in the heating flow path enters the inverter 1 through the second delivery port 12 and is discharged from the inverter 1 through the third delivery port 13. After being discharged from the inverter 1, it can flow back to the liquid storage tank 37 through the liquid return flow path or flow to the battery 2 through the first waste heat flow path 33.

[0048] The refrigeration medium in the refrigeration flow path enters the battery 2 through the fourth delivery port 24 and is discharged from the battery 2 through the sixth delivery port 26. After being discharged from the battery 2, it can flow back to the liquid storage tank 37 through the liquid return flow path or flow to the inverter 1 through the first waste heat flow path 33. The heating medium in the heating flow path enters the battery 2 through the fifth delivery port 25 and is discharged from the battery 2 through the sixth delivery port 26. After being discharged from the battery 2, it can flow back to the liquid storage tank 37 through the liquid return flow path or flow to the inverter 1 through the first waste heat flow path 33.

[0049] In some exemplary embodiments, for the solution where the heat exchange device further includes a second waste heat flow path 34: one end of the first delivery port 11 and / or the second delivery port 12 is connected to one end of the second waste heat flow path 34, and one end of the fourth delivery port 24 and / or the fifth delivery port 25 is connected to the other end of the second waste heat flow path 34.

[0050] It can be: there is only one second waste heat flow path 34, and both ends of the second waste heat flow path 34 are respectively connected to the first delivery port 11 and the fourth delivery port 24; or, both ends of the second waste heat flow path 34 are respectively connected to the second delivery port 12 and the fifth delivery port 25; or, both ends of the second waste heat flow path 34 are respectively connected to the first delivery port 11 and the fifth delivery port 25; or, both ends of the second waste heat flow path 34 are respectively connected to the second delivery port 12 and the fourth delivery port 24.

[0051] It can also be: the second waste heat flow path 34 includes two waste heat branches. One end of one waste heat branch is respectively connected to the first delivery port 11 and the fourth delivery port 24, and one end of the other waste heat branch is respectively connected to the second delivery port 12 and the fifth delivery port 25; or, one end of one waste heat branch is respectively connected to the first delivery port 11 and the fifth delivery port 25, and one end of the other waste heat branch is respectively connected to the second delivery port 12 and the fourth delivery port 24.

[0052] The control valve assembly can be adjusted accordingly according to the number and connection mode of the second waste heat flow path 34.

[0053] In some exemplary embodiments, the control valve assembly includes a first control valve 381, a second control valve 382, a third control valve 383, a fourth control valve 384, and a fifth control valve 385, as Figures 1 to 3 shown.

[0054] As Figure 1 shown, the refrigeration flow path includes a refrigeration main path 311, a first refrigeration branch path 312, and a second refrigeration branch path 313. The input end of the refrigeration main path 311 is connected to the liquid storage tank 37 through the first control valve 381. The output end of the refrigeration main path 311 is connected to one end of the first refrigeration branch path 312 and one end of the second refrigeration branch path 313 through the second control valve 382. The other ends of the first refrigeration branch path 312 and the second refrigeration branch path 313 are respectively connected to the first delivery port 11 and the fourth delivery port 24.

[0055] As Figure 1 shown, the heating flow path includes a heating main path 321, a first heating branch path 322, and a second heating branch path 323. The input end of the heating main path 321 is connected to the liquid storage tank 37 through the first control valve 381. The output end of the heating main path 321 is connected to one end of the first heating branch path 322 and one end of the second heating branch path 323 through the third control valve 383. The other ends of the first heating branch path 322 and the second heating branch path 323 are respectively connected to the second delivery port 12 and the fifth delivery port 25.

[0056] As Figure 1 shown, the liquid return flow path includes a liquid return main path 351, a first liquid return branch path 352, and a second liquid return branch path 353. One end of the first liquid return branch path 352, one end of the first waste heat flow path 33, and the third delivery port 13 are connected through the fourth control valve 384. The other end of the first waste heat flow path 33 is connected to the sixth delivery port 26. One end of the second liquid return branch path 353 is connected to the second control valve 382 and / or the third control valve 383. The other end of the second liquid return branch path 353, the other end of the first liquid return branch path 352, and the input end of the liquid return main path 351 are connected through the fifth control valve 385. The output end of the liquid return main path 351 is connected to the liquid storage tank 37.

[0057] It can be: As Figure 2 shown, there is only one second liquid return branch path 353, and both ends of the second liquid return branch path 353 are respectively connected to the second control valve 382 and the fifth control valve 385; or, as Figure 3 shown, both ends of the second liquid return branch path 353 are respectively connected to the third control valve 383 and the fifth control valve 385. It can also be: As Figure 1As shown, the second liquid return branch 353 includes two liquid return branches. One end of one liquid return branch is respectively connected to the second control valve 382 and the fifth control valve 385, and one end of the other liquid return branch is respectively connected to the third control valve 383 and the fifth control valve 385. The control valve assembly can be adjusted accordingly according to the number and connection mode of the second heat recovery branch.

[0058] Among them, the first control valve 381 can be a multi-way valve. Then the first control valve 381 has at least three ports. The three ports of the first control valve 381 are respectively connected to the liquid storage tank 37, the input end of the refrigeration main circuit 311, and the input end of the heating main circuit 321, as Figures 1 to 3 shown.

[0059] The second control valve 382 can be a multi-way valve. Then the second control valve 382 has at least three ports, as Figure 3 shown. The three ports of the second control valve 382 are respectively connected to the output end of the refrigeration main circuit 311, the input end of the first refrigeration branch 312, and the input end of the second refrigeration branch 313. When one end of the second liquid return branch 353 is connected to the second control valve 382, the second control valve 382 correspondingly has at least four ports, as Figure 1 and Figure 2 shown. The fourth port is connected to one end of the second liquid return branch 353.

[0060] The third control valve 383 can be a multi-way valve. The third control valve 383 has at least three ports, as Figure 2 shown. The three ports of the third control valve 383 are respectively connected to the output end of the heating main circuit 321, the input end of the first heating branch 322, and the input end of the second heating branch 323. When one end of the second liquid return branch 353 is connected to the third control valve 383, the third control valve 383 correspondingly has at least four ports, as Figure 1 and Figure 3 shown. The fourth port is connected to one end of the second liquid return branch 353.

[0061] The fourth control valve 384 can be a multi-way valve. The fourth control valve 384 has at least three ports, as Figures 1 to 3 shown. The three ports of the fourth control valve 384 are respectively connected to the third delivery port 13, one end of the first waste heat flow path 33, and one end of the first liquid return branch 352.

[0062] The fifth control valve 385 can be a multi-way valve. The fifth control valve 385 has at least three ports, as Figure 2 and Figure 3As shown, the three ports of the fifth control valve 385 are respectively connected to the other end of the first liquid return branch 352, the other end of the second liquid return branch 353, and the input end of the liquid return main line 351. When the second liquid return branch 353 includes two liquid return branches, the fifth control valve 385 correspondingly has at least four ports, as Figure 1 shown, two ports are respectively connected to the other ends of the two liquid return branches, and the other two ports are respectively connected to the other end of the first liquid return branch 352 and the input end of the liquid return main line 351.

[0063] Of course, the first control valve 381 can also include multiple valves. For example, it includes two two-way valves. One two-way valve controls the on-off of the liquid storage tank 37 and the heating main line 321, and the other two-way valve controls the on-off of the liquid storage tank 37 and the cooling main line 311. Similarly, the second control valve 382, the third control valve 383, the fourth control valve 384, and the fifth control valve 385 can also include multiple valves. Those skilled in the art can reasonably select the types and quantities of valves according to the requirements of the flow path on-off, and no further examples will be given here. Moreover, the control valves in the embodiments of the present application, in addition to having the on-off function, can also have the function of regulating the flow rate.

[0064] It can be understood that the length and layout of the flow path can be reasonably adjusted according to needs, and the position of the control valve can also be reasonably adjusted according to needs. Therefore, some flow paths can be relatively long and are composed of separate pipelines, and some flow paths can be relatively short and are not composed of separate pipelines, but are formed by the channels inside the control valve. For example:

[0065] The first cooling branch 312 formed by an additional pipeline can be omitted, then the second control valve 382 is directly connected to the first delivery port 11, and the first cooling branch 312 is formed by the internal channel of the second control valve 382; or the second cooling branch 313 formed by an additional pipeline can be omitted, then the second control valve 382 is directly connected to the fourth delivery port 24, and the second cooling branch 313 is formed by the internal channel of the second control valve 382.

[0066] Similarly, the first heating branch 322 formed by an additional pipeline can be omitted, then the third control valve 383 is directly connected to the second delivery port 12, and the first heating branch 322 is formed by the internal channel of the third control valve 383; or the second heating branch 323 formed by an additional pipeline can be omitted, then the third control valve 383 is directly connected to the fifth delivery port 25, and the second heating branch 323 is formed by the internal channel of the third control valve 383.

[0067] The first liquid return branch 352 formed additionally through a pipeline can also be omitted, then the fourth control valve 384 is directly connected to the fifth control valve 385, and the first liquid return branch 352 is formed by the internal channels of the fourth control valve 384 and the fifth control valve 385. The second liquid return branch 353 formed additionally through a pipeline can also be omitted, then the second control valve 382 and / or the third control valve 383 are directly connected to the fifth control valve 385, and the second liquid return branch 353 is formed by the internal channels of the second control valve 382 and / or the third control valve 383 and the fifth control valve 385. The liquid return main path 351 can also be omitted, then the fifth control valve 385 is directly connected to the liquid storage tank 37, and the liquid return main path 351 is formed by the internal channel of the fifth control valve 385.

[0068] In some exemplary embodiments, the second waste heat flow path 34 includes a first refrigeration branch 312 and a second refrigeration branch 313, as Figure 8 and Figure 9 shown; and / or, the second waste heat flow path 34 includes a first heating branch 322 and a second heating branch 323.

[0069] It can be that there is only one second waste heat flow path 34, then the second waste heat flow path 34 includes a first refrigeration branch 312 and a second refrigeration branch 313, or the second waste heat flow path 34 includes a first heating branch 322 and a second heating branch 323.

[0070] It can also be that the second waste heat flow path 34 includes two waste heat branches, then one waste heat flow path includes a first refrigeration branch 312 and a second refrigeration branch 313, and the other waste heat flow path includes a first heating branch 322 and a second heating branch 323.

[0071] In this way, there is no need to additionally set up the second waste heat flow path 34, which is beneficial to simplifying the pipeline layout and control valve assembly of the heat exchange device, and is also beneficial to simplifying the docking structure between the heat exchange device and the inverter 1 and the battery 2.

[0072] Of course, the second waste heat flow path 34 can also be additionally set up, and the control valve assembly can be adjusted accordingly.

[0073] In some exemplary embodiments, as Figure 1 shown, a liquid supply flow path 394 is connected between the first control valve 381 and the liquid storage tank 37. An infusion flow path 395 is connected between the third delivery port 13 and the fourth control valve 384. The power assembly includes: a first pump 391 provided in the liquid supply flow path 394, a second pump 392 provided in the infusion flow path 395, and a third pump 393 provided in the first waste heat flow path 33.

[0074] In other words, the first control valve 381 is indirectly connected to the liquid storage tank 37 through the liquid supply flow path 394. The third delivery port 13 is indirectly connected to the fourth control valve 384 through the liquid infusion flow path 395. Of course, the first control valve 381 can also be directly connected to the liquid storage tank 37, and the liquid supply flow path 394 is formed by the internal passage of the first control valve 381. The third delivery port 13 and the fourth control valve 384 can also be directly connected, and the liquid infusion flow path 395 is formed by the internal passage of the fourth control valve 384.

[0075] Of course, the number of pumps included in the power assembly and the positions of the pumps are not limited to the above solutions and can also be adjusted as needed.

[0076] In some exemplary embodiments, the liquid storage tank 37 is provided with a water inlet 371 communicating with an external water source, as Figure 1 shown. Among them, the external water source can be, but is not limited to, tap water. In this way, tap water can be used to provide the heat exchange medium for the liquid storage tank 37, which is convenient in source and low in price.

[0077] In some exemplary embodiments, as Figure 1 shown, the liquid storage tank 37 is provided with an openable and closable drain port 372. The drain port 372 can be connected to a drain pipe 373, and a switch 374 can be provided on the drain pipe 373. This facilitates the replacement of the heat exchange medium in the liquid storage tank 37.

[0078] For example: when the inverter 1 and the battery 2 need to be cooled, if the temperature of the liquid in the liquid storage tank 37 is seriously higher than the temperature of tap water, the heat exchange medium in the liquid storage tank 37 can be discharged and replaced with tap water at a relatively lower temperature to facilitate the efficient cooling of the inverter 1 and the battery 2.

[0079] In some exemplary embodiments, as Figures 1 to 3 shown, the heating element and the cooling element are integrated into a thermoelectric cooling element 36. This can reduce the number of components of the heat exchange device and is beneficial to further simplifying the structure of the heat exchange device. It can be that the hot end of the thermoelectric cooling element 36 is arranged to heat the heat generation flow path, and the cold end is arranged to cool the refrigeration flow path.

[0080] In some exemplary embodiments, the energy management system further includes a battery 2, as Figures 1 to 3 shown. The inverter 1 and the battery 2 can also be electrically connected. Exemplarily, the energy management system can be used for solar photovoltaic devices.

[0081] In some exemplary embodiments, as Figure 4As shown, the battery 2 includes a sixth control valve 22, a seventh control valve 23, and multiple heat exchange channels 21 connected in parallel. One end of the multiple heat exchange channels 21 is connected through the sixth control valve 22, and the other end of the multiple heat exchange channels 21 is connected through the seventh control valve 23. The sixth control valve 22 and the seventh control valve 23 are configured to control the on-off of each heat exchange channel 21.

[0082] The heat exchange channels 21 can be straight or curved (as Figure 4 shown). The heat exchange channels 21 can be in close contact with the heat generating elements (such as the cylindrical battery cells 28) inside the battery 2 to accelerate heat conduction. Multiple temperature sensors 27 can be arranged in different regions inside the battery 2 to detect the temperatures of different regions of the battery 2. Temperature sensors 27 can be respectively arranged in the regions near both ends of each heat exchange channel 21. Or some of the heat exchange channels 21 can be grouped together, and temperature sensors 27 can be respectively arranged in the regions near both ends of each group of heat exchange channels 21, as Figure 4 shown.

[0083] In this way, it is convenient to reasonably adjust the on-off and flow rate of different heat exchange channels 21 according to the temperatures at different positions inside the battery 2, and then precisely control the temperatures of different regions inside the battery 2 through the multiple heat exchange channels 21, so as to achieve the purpose of evenly regulating the temperatures of the components of the battery 2, ensure the normal operation of the battery 2, and is beneficial to further improving the energy utilization rate.

[0084] The sixth control valve 22 and the seventh control valve 23 can be multi-way valves. The fourth delivery port 24 and the fifth delivery port 25 of the battery 2 are communicated with the sixth control valve 22, and the sixth delivery port 26 is communicated with the seventh control valve 23. The sixth control valve 22 and the seventh control valve 23 can also include multiple valves.

[0085] As Figure 5 shown, an embodiment of the present application also provides a control method for the energy management system as described in the above embodiment. The control method includes:

[0086] Step S202: Determine the heat exchange requirements of the inverter 1 and / or the battery 2;

[0087] Step S204: Control the heat exchange device according to the heat exchange requirements of the inverter 1 and / or the battery 2.

[0088] The control method provided by the embodiment of the present application can first determine the heat exchange requirements of the inverter 1 and / or the battery 2, and then control the heat exchange device according to the determined heat exchange requirements to meet the heat exchange requirements of the inverter 1 and the battery 2, so as to realize the automatic heating and cooling of the inverter 1 and the battery 2, which is beneficial to the long-term stable operation of the inverter 1 and the battery 2, and realizes the linkage temperature control of the inverter 1 and the battery 2, which is beneficial to improving the energy utilization rate.

[0089] In some exemplary embodiments, before determining the heat exchange requirements of the inverter 1 and / or the battery 2, the control method further includes:

[0090] Obtaining the temperature information of the inverter 1 and the battery 2;

[0091] Based on the temperature of the inverter 1 exceeding the set operating temperature range of the inverter 1 (indicating that the temperature of the inverter 1 is too high or too low), it is determined that the inverter 1 has a heat exchange requirement;

[0092] Based on the temperature of the battery 2 exceeding the set operating temperature range of the battery 2 (indicating that the temperature of the battery 2 is too high or too low), it is determined that the battery 2 has a heat exchange requirement.

[0093] Conversely, based on the temperature of the inverter 1 not exceeding the set operating temperature range of the inverter 1 (indicating that the temperature of the inverter 1 is normal), it is determined that the inverter 1 has no heat exchange requirement. Based on the temperature of the battery 2 not exceeding the set operating temperature range of the battery 2 (indicating that the temperature of the battery 2 is normal), it is determined that the battery 2 has no heat exchange requirement.

[0094] Wherein, the set operating temperature range of the inverter 1 can be within, but not limited to, the range of -20°C to 60°C. The set operating temperature range of the battery 2 can be within, but not limited to, the range of -20°C to 60°C.

[0095] When only one of the inverter 1 and the battery 2 has a heat exchange requirement while the other does not, heating / cooling can be directly performed on the inverter 1 or the battery 2 through the heating flow path / cooling flow path to meet its heat exchange requirement.

[0096] For example: when the inverter 1 has a heating requirement, the control valve assembly connects the liquid storage tank 37, the heating flow path, the inverter 1, and the return liquid flow path, and the semiconductor refrigeration element 36, the first pump 391, and the second pump 392 are started, so that a heating medium is formed in the heating flow path and sent into the inverter 1. The heat exchange medium discharged from the inverter 1 can directly flow back into the liquid storage tank 37 to form a cycle.

[0097] When the inverter 1 has a cooling requirement, the control valve assembly connects the liquid storage tank 37, the cooling flow path, the inverter 1, and the return liquid flow path, and the semiconductor refrigeration element 36, the first pump 391, and the second pump 392 are started. The semiconductor refrigeration element 36 is started, so that a cooling medium is formed in the cooling flow path and sent into the inverter 1. The heat exchange medium discharged from the inverter 1 can directly flow back into the liquid storage tank 37 to form a cycle.

[0098] When the battery 2 has a heating requirement, the control valve assembly connects the liquid storage tank 37, the heating flow path, the battery 2, and the liquid return flow path. The semiconductor refrigeration element 36, the first pump 391, and the third pump 393 are started, so that a heating medium is formed in the heating flow path and sent into the battery 2. The heat exchange medium discharged from the battery 2 can directly flow back into the liquid storage tank 37 to form a cycle.

[0099] When the battery 2 has a cooling requirement, the control valve assembly connects the liquid storage tank 37, the cooling flow path, the battery 2, and the liquid return flow path. The semiconductor refrigeration element 36, the first pump 391, and the third pump 393 are started, and the semiconductor refrigeration element 36 is started, so that a cooling medium is formed in the cooling flow path and sent into the battery 2. The heat exchange medium discharged from the battery 2 can directly flow back into the liquid storage tank 37 to form a cycle.

[0100] In some exemplary embodiments, determining the heat exchange requirement of the inverter 1 and / or the battery 2 includes:

[0101] Based on the temperature of the inverter 1 being higher than the upper limit value of the set operating temperature range of the inverter 1 (indicating that the temperature of the inverter 1 is too high), it is determined that the heat exchange requirement of the inverter 1 is a cooling requirement;

[0102] Based on the temperature of the inverter 1 being lower than the lower limit value of the set operating temperature range of the inverter 1 (indicating that the temperature of the inverter 1 is too low), it is determined that the heat exchange requirement of the inverter 1 is a heating requirement;

[0103] Based on the temperature of the battery 2 being higher than the upper limit value of the set operating temperature range of the battery 2 (indicating that the temperature of the battery 2 is too high), it is determined that the heat exchange requirement of the battery 2 is a cooling requirement;

[0104] Based on the temperature of the battery 2 being lower than the lower limit value of the set operating temperature range of the battery 2 (indicating that the temperature of the battery 2 is too high), it is determined that the heat exchange requirement of the battery 2 is a heating requirement.

[0105] The upper limit value of the set operating temperature range of the inverter 1 can be denoted as T1max, and the lower limit value of the set operating temperature range of the inverter 1 can be denoted as T1min.

[0106] The upper limit value of the set operating temperature range of the battery 2 can be denoted as T2max, and the lower limit value of the set operating temperature range of the battery 2 can be denoted as T2min.

[0107] Of course, the heat exchange requirement of the inverter 1 and / or the battery 2 can also be determined by other means, such as by the power of the inverter 1 and the battery 2 and / or the ambient temperature.

[0108] In some exemplary embodiments, controlling the heat exchange device according to the heat exchange requirement of the inverter 1 and / or the battery 2 includes:

[0109] Step S2042: Based on the heat exchange requirements of the inverter 1 and the battery 2 both being refrigeration requirements (which can indicate that both the inverter 1 and the battery 2 are in a high-load operating state), control the control valve assembly to connect the refrigeration flow path to the inverter 1 and the battery 2, so as to provide a refrigeration medium to the inverter 1 and the battery 2;

[0110] Step S2044: Based on the heat exchange requirements of the inverter 1 and the battery 2 both being heating requirements (which can indicate that both the inverter 1 and the battery 2 are in a low-load operating state), control the control valve assembly to connect the heating flow path to the inverter 1 and the battery 2, so as to provide a heating medium to the inverter 1 and the battery 2;

[0111] Step S2046: Based on the heat exchange requirement of the inverter 1 being a refrigeration requirement and the heat exchange requirement of the battery 2 being a heating requirement (which can indicate that the inverter 1 is in a high-load operating state and the battery 2 is in a low-load operating state), control the control valve assembly to connect the refrigeration flow path to the inverter 1, so as to provide a refrigeration medium to the inverter 1 through the refrigeration flow path; Based on determining that the temperature of the heat exchange medium discharged from the inverter 1 is higher than the set end heat exchange temperature range of the battery 2, control the control valve assembly to connect the first waste heat flow path 33 to the inverter 1 and the battery 2, so as to transport the heat exchange medium discharged after heating the inverter 1 to the battery 2 through the first waste heat flow path 33 to heat the battery 2; Based on determining that the temperature of the heat exchange medium discharged from the inverter 1 is not higher than the set end heat exchange temperature range of the battery 2, control the control valve assembly to connect the heating flow path to the battery 2, so as to provide a heating medium to the battery 2 through the heating flow path.

[0112] Step S2048: Based on the heat exchange requirement of the battery 2 being a refrigeration requirement and the heat exchange requirement of the inverter 1 being a heating requirement (which can indicate that the battery 2 is in a high-load operating state and the inverter 1 is in a low-load operating state), control the control valve assembly to connect the refrigeration flow path to the battery 2, so as to provide a refrigeration medium to the battery 2 through the refrigeration flow path; Based on determining that the temperature of the heat exchange medium discharged from the battery 2 is higher than the set end heat exchange temperature range of the inverter 1, control the control valve assembly to connect the first waste heat flow path 33 to the inverter 1 and the battery 2, so as to transport the heat exchange medium discharged after heating the battery 2 to the inverter 1 through the first waste heat flow path 33 to heat the inverter 1; Based on determining that the temperature of the heat exchange medium discharged from the battery 2 is not higher than the set end heat exchange temperature range of the inverter 1, control the control valve assembly to connect the heating flow path to the inverter 1, so as to provide a heating medium to the inverter 1 through the heating flow path.

[0113] The set end heat exchange temperature range of the inverter 1 does not exceed the set operating temperature range of the inverter 1. The set end heat exchange temperature range of the inverter 1 can be the optimal operating temperature range of the inverter 1, such as 20°C to 25°C.

[0114] The set end heat exchange temperature range of the battery 2 does not exceed the set operating temperature range of the inverter 1; the set end heat exchange temperature range of the battery 2 can be the optimal operating temperature range of the battery 2, such as 20°C to 25°C.

[0115] In one example, in step S2042: controlling the control valve assembly to connect the refrigeration flow path with the inverter 1 and the battery 2 to provide a refrigeration medium to the inverter 1 and the battery 2, including: controlling the first control valve 381 to connect the liquid storage tank 37 with the input end of the refrigeration main path 311, controlling the second control valve 382 to connect the output end of the refrigeration main path 311 with the input ends of the first refrigeration branch 312 and the second refrigeration branch 313, controlling the fourth control valve 384 to connect the third delivery port 13 with the first liquid return branch 352 and to connect the first waste heat flow path 33 with the first liquid return branch 352, controlling the fifth control valve 385 to connect the first liquid return branch 352 with the liquid return main path 351, and starting the thermoelectric cooler 36, the first pump 391, the second pump 392, and the third pump 393.

[0116] In this way, as Figure 6 shown, the heat exchange medium in the liquid storage tank 37 enters the refrigeration main path 311, is cooled by the thermoelectric cooler 36, then enters the first refrigeration branch 312 and the second refrigeration branch 313 through the first control valve 381. The refrigeration medium in the first refrigeration branch 312 enters the inverter 1 through the first delivery port 11 to cool the inverter 1 and is discharged through the third delivery port 13. The refrigeration medium in the second refrigeration branch 313 enters the battery 2 through the fourth delivery port 24 to cool the battery 2 and is discharged through the sixth delivery port 26. The heat exchange medium discharged from the third delivery port 13 and the sixth delivery port 26 enters the first liquid return branch 352 through the fourth control valve 384, then enters the liquid return main path 351 through the fifth control valve 385, and finally returns to the liquid storage tank 37 to form a cycle.

[0117] In step S2044, controlling the control valve assembly to connect the heating flow path with the inverter 1 and the battery 2 to provide a heating medium to the inverter 1 and the battery 2, including: controlling the first control valve 381 to connect the liquid storage tank 37 with the input end of the heating main path 321, controlling the third control valve 383 to connect the output end of the heating main path 321 with the input ends of the first heating branch 322 and the second heating branch 323, controlling the fourth control valve 384 to connect the third delivery port 13 with the first liquid return branch 352 and to connect the first waste heat flow path 33 with the first liquid return branch 352, controlling the fifth control valve 385 to connect the first liquid return branch 352 with the liquid return main path 351, and starting the thermoelectric cooler 36, the first pump 391, the second pump 392, and the third pump 393.

[0118] In this way, as Figure 7As shown, the heat exchange medium in the liquid storage tank 37 enters the heating main path 321, is heated by the semiconductor refrigeration element 36, and then enters the first heating branch path 322 and the second heating branch path 323 through the first control valve 381. The heating medium in the first heating branch path 322 enters the inverter 1 through the second delivery port 12, heats the inverter 1, and then is discharged through the third delivery port 13. The heating medium in the second heating branch path 323 enters the battery 2 through the fifth delivery port 25, heats the battery 2, and then is discharged through the sixth delivery port 26. The heat exchange medium discharged from the third delivery port 13 and the sixth delivery port 26 enters the first liquid return branch path 352 through the fourth control valve 384, then enters the liquid return main path 351 through the fifth control valve 385, and finally returns to the liquid storage tank 37 to form a cycle.

[0119] In step S2046, controlling the control valve assembly to connect the refrigeration flow path with the inverter 1 to supply the refrigeration medium to the inverter 1 through the refrigeration flow path includes: controlling the first control valve 381 to connect the liquid storage tank 37 with the input end of the refrigeration main path 311, controlling the second control valve 382 to connect the output end of the refrigeration main path 311 with the input end of the first refrigeration branch path 312, and starting the semiconductor refrigeration element 36, the first pump 391, and the second pump 392. Controlling the control valve assembly to connect the first waste heat flow path 33 with the inverter 1 and the battery 2 to transport the heat exchange medium discharged after heating the inverter 1 to the battery 2 through the first waste heat flow path 33 to heat the battery 2 includes: controlling the fourth control valve 384 to connect the third delivery port 13 with the first waste heat flow path 33 and starting the third pump 393. Controlling the control valve assembly to connect the heating flow path with the battery 2 to supply the heating medium to the battery 2 through the heating flow path includes: controlling the first control valve 381 to connect the liquid storage tank 37 with the input end of the heating main path 321, controlling the third control valve 383 to connect the output end of the heating main path 321 with the input end of the second heating branch path 323, controlling the fourth control valve 384 to connect the first waste heat flow path 33 with the first liquid return branch path 352, controlling the fifth control valve 385 to connect the first liquid return branch path 352 with the liquid return main path 351, and starting the third pump 393.

[0120] In this way, as Figure 8As shown, the heat exchange medium in the liquid storage tank 37 enters the refrigeration main path 311. After being refrigerated by the semiconductor refrigeration element 36, it enters the first refrigeration branch 312 through the second control valve 382. The refrigeration medium in the first refrigeration branch 312 enters the inverter 1 through the first delivery port 11 to cool the inverter 1, and then is discharged through the third delivery port 13. If the temperature of the heat exchange medium discharged from the third delivery port 13 is higher than the set end heat exchange temperature range of the battery 2 (for example, higher than 25 °C), the heat exchange medium discharged from the third delivery port 13 enters the first waste heat flow path 33 through the fourth control valve 384, and enters the battery 2 through the sixth delivery port 26 to heat the battery 2. Thus, the waste heat of the inverter 1 can be used to heat the battery 2. Moreover, the heat generated by the inverter 1 is generally sufficient to meet the heating requirement of the battery 2, and there is no need to consume additional energy to heat the battery 2.

[0121] If the temperature of the heat exchange medium discharged from the third delivery port 13 is not higher than the set end heat exchange temperature range of the battery 2 (for example, lower than 20 °C), the heat exchange medium discharged from the third delivery port 13 enters the first liquid return branch 352 through the fourth control valve 384, and then flows back into the liquid storage tank 37 through the fifth control valve 385 and the liquid return main path 351. Moreover, the heat exchange medium in the heating main path 321 is heated by the semiconductor refrigeration element 36 and enters the second heating branch 323 through the third control valve 383. The heating medium in the second heating branch 323 enters the battery 2 through the fifth delivery port 25 to heat the battery 2, and then is discharged to the first waste heat flow path 33 through the sixth delivery port 26. Then it enters the first liquid return branch 352 through the fourth control valve 384, and then flows back into the liquid storage tank 37 through the fifth control valve 385 and the liquid return main path 351.

[0122] In step S2048, controlling the control valve assembly to connect the refrigeration flow path with the battery 2 to supply a refrigeration medium to the battery 2 through the refrigeration flow path includes: controlling the first control valve 381 to connect the liquid storage tank 37 with the input end of the refrigeration main path 311, controlling the second control valve 382 to connect the output end of the refrigeration main path 311 with the input end of the second refrigeration branch path 313, and starting the semiconductor refrigeration element 36, the first pump 391, and the third pump 393. Controlling the control valve assembly to connect the first waste heat flow path 33 with the inverter 1 and the battery 2 to transport the heat exchange medium discharged after heating the battery 2 to the inverter 1 through the first waste heat flow path 33 to heat the inverter 1 includes: controlling the fourth control valve 384 to connect the third delivery port 13 with the first waste heat flow path 33, and starting the second pump 392. Controlling the control valve assembly to connect the heating flow path with the inverter 1 to supply a heating medium to the inverter 1 through the heating flow path includes: controlling the first control valve 381 to connect the liquid storage tank 37 with the input end of the heating main path 321, controlling the third control valve 383 to connect the output end of the heating main path 321 with the input end of the first heating branch path 322, controlling the fourth control valve 384 to connect the third delivery port 13 with the first liquid return branch path 352, controlling the fifth control valve 385 to connect the first liquid return branch path 352 with the liquid return main path 351, and starting the second pump 392.

[0123] Thus, as Figure 9 shown, the heat exchange medium in the liquid storage tank 37 enters the refrigeration main path 311, is refrigerated by the semiconductor refrigeration element 36, then enters the second refrigeration branch path 313 through the second control valve 382, and the refrigeration medium in the second refrigeration branch path 313 enters the battery 2 through the fourth delivery port 24 to cool the battery 2 and is discharged through the sixth delivery port 26. If the temperature of the heat exchange medium discharged from the sixth delivery port 26 is higher than the set end heat exchange temperature range of the inverter 1 (for example, higher than 25 °C), then the heat exchange medium discharged from the sixth delivery port 26 enters the fourth control valve 384 through the first waste heat flow path 33, and then enters the inverter 1 through the third delivery port 13 to heat the inverter 1. Thus, the waste heat of the battery 2 can be utilized to heat the inverter 1. Moreover, the heat generated by the battery 2 is generally sufficient to meet the heating requirement of the inverter 1, and there is no need to consume additional energy to heat the inverter 1.

[0124] If the temperature of the heat exchange medium discharged from the sixth delivery port 26 is not higher than the set end heat exchange temperature range of the inverter 1 (for example, lower than 20 °C), the heat exchange medium discharged from the sixth delivery port 26 enters the first liquid return branch 352 through the fourth control valve 384, and then flows back into the liquid storage tank 37 through the fifth control valve 385 and the liquid return main path 351. Moreover, the heat exchange medium in the heating main path 321 is heated by the semiconductor refrigeration element 36 and enters the first heating branch 322 through the third control valve 383. The heating medium in the first heating branch 322 enters the inverter 1 through the second delivery port 12 to heat the inverter 1 and is then discharged through the third delivery port 13, and then enters the first liquid return branch 352 through the fourth control valve 384, and then flows back into the liquid storage tank 37 through the fifth control valve 385 and the liquid return main path 351.

[0125] In some exemplary embodiments, controlling the heat exchange device according to the heat exchange requirements of the inverter 1 and / or the battery 2 further includes:

[0126] Step S2052: Based on the heat exchange requirement of the inverter 1 being a refrigeration requirement and the heat exchange requirement of the battery 2 being a heating requirement, and determining that the temperature of the heat exchange medium discharged from the battery 2 is lower than the temperature of the inverter 1, control the control valve assembly to conduct the second waste heat flow path 34 of the heat exchange device, so as to transport the heat exchange medium discharged from the battery 2 back to the inverter 1 through the second waste heat flow path 34 to refrigerate the inverter 1;

[0127] Step S2054: Based on the heat exchange requirement of the inverter 1 being a refrigeration requirement and the heat exchange requirement of the battery 2 being a heating requirement, and determining that the temperature of the heat exchange medium discharged from the battery 2 is not lower than the temperature of the inverter 1, control the control valve assembly to conduct the liquid return flow path of the heat exchange device, so that the heat exchange medium discharged from the battery 2 flows back to the liquid storage tank 37;

[0128] Step S2056: Based on the heat exchange requirement of the battery 2 being a refrigeration requirement and the heat exchange requirement of the inverter 1 being a heating requirement, and determining that the temperature of the heat exchange medium discharged from the inverter 1 is lower than the temperature of the battery 2, control the control valve assembly to conduct the second waste heat flow path 34 of the heat exchange device, so as to transport the heat exchange medium discharged from the inverter 1 back to the battery 2 through the second waste heat flow path 34 to refrigerate the battery 2;

[0129] Step S2058: Based on the heat exchange requirement of the battery 2 being a refrigeration requirement and the heat exchange requirement of the inverter 1 being a heating requirement, and determining that the temperature of the heat exchange medium discharged from the inverter 1 is not lower than the temperature of the battery 2, control the control valve assembly to conduct the liquid return flow path of the heat exchange device, so that the heat exchange medium discharged from the inverter 1 flows back to the liquid storage tank 37.

[0130] In one example, in step S2052, controlling the control valve assembly to conduct the second waste heat flow path 34 of the heat exchange device includes: controlling the second control valve 382 to connect the second refrigeration branch 313 and the first refrigeration branch 312.

[0131] In this way, as Figure 8 shown, the heat exchange medium in the battery 2 is discharged through the fourth delivery port 24 into the second refrigeration branch 313, then enters the first refrigeration branch 312 through the second control valve 382, and then flows back into the inverter 1 through the first delivery port 11 to cool the inverter 1. Alternatively, the third control valve 383 can also be controlled to connect the second heating branch 323 and the first heating branch 322, so that the heat exchange medium in the battery 2 is discharged through the fifth delivery port 25 into the second heating branch 323, then enters the first heating branch 322 through the third control valve 383, and then flows back into the inverter 1 through the second delivery port 12 to cool the inverter 1.

[0132] In step S2054, controlling the control valve assembly to conduct the liquid return flow path of the heat exchange device, so that the heat exchange medium discharged from the battery 2 flows back to the liquid storage tank 37, includes: controlling the second control valve 382 to connect the second refrigeration branch 313 and the second liquid return branch 353, and controlling the fifth control valve 385 to connect the second liquid return branch 353 and the liquid return main path 351.

[0133] In this way, as Figure 8 shown, the heat exchange medium in the battery 2 is discharged through the fourth delivery port 24 into the second refrigeration branch 313, then enters the second liquid return branch 353 through the second control valve 382 (the liquid return branch between the second control valve 382 and the fifth control valve 385, Figure 8 the flow path of this branch is indicated by a dotted arrow in the figure), then enters the liquid return main path 351 through the fifth control valve 385, and finally flows back into the liquid storage tank 37 to form a cycle. Alternatively, the third control valve 383 can also be controlled to connect the second heating branch 323 and the second liquid return branch 353, and the fifth control valve 385 can be controlled to connect the second liquid return branch 353 and the liquid return main path 351, so that the heat exchange medium in the battery 2 is discharged through the fifth delivery port 25 into the second heating branch 323, then enters the second liquid return branch 353 through the third control valve 383 (the liquid return branch between the third control valve 383 and the fifth control valve 385), then enters the liquid return main path 351 through the fifth control valve 385, and finally flows back into the liquid storage tank 37 to form a cycle.

[0134] In step S2056, controlling the control valve assembly to conduct the second waste heat flow path 34 of the heat exchange device, includes: controlling the second control valve 382 to connect the second refrigeration branch 313 and the first refrigeration branch 312.

[0135] In this way, as Figure 9As shown, the heat exchange medium in the inverter 1 is discharged through the first delivery port 11 into the first refrigeration branch 312, then enters the second refrigeration branch 313 through the second control valve 382, and then flows back into the battery 2 through the fourth delivery port 24 to cool the battery 2. Alternatively, the third control valve 383 can be controlled to connect the second heating branch 323 and the first heating branch 322, so that the heat exchange medium in the inverter 1 is discharged through the second delivery port 12 into the first heating branch 322, then enters the second heating branch 323 through the third control valve 383, and then flows back into the battery 2 through the fifth delivery port 25 to cool the battery 2.

[0136] In step S2058, controlling the control valve assembly to conduct the liquid return flow path of the heat exchange device, so that the heat exchange medium discharged from the inverter 1 flows back to the liquid storage tank 37, includes: controlling the second control valve 382 to connect the first refrigeration branch 312 and the second liquid return branch 353, and controlling the fifth control valve 385 to connect the second liquid return branch 353 and the liquid return main path 351.

[0137] In this way, as Figure 9 shown, the heat exchange medium in the inverter 1 is discharged through the first delivery port 11 into the first refrigeration branch 312, then enters the second liquid return branch 353 (the liquid return branch between the second control valve 382 and the fifth control valve 385, Figure 9 and the flow path of this branch is indicated by a dotted arrow in the figure) through the second control valve 382, then enters the liquid return main path 351 through the fifth control valve 385, and finally flows back into the liquid storage tank 37 to form a cycle. Alternatively, the third control valve 383 can be controlled to connect the first heating branch 322 and the second liquid return branch 353, and the fifth control valve 385 can be controlled to connect the second liquid return branch 353 and the liquid return main path 351, so that the heat exchange medium in the inverter 1 is discharged through the second delivery port 12 into the first heating branch 322, then enters the second liquid return branch 353 (the liquid return branch between the third control valve 383 and the fifth control valve 385) through the third control valve 383, then enters the liquid return main path 351 through the fifth control valve 385, and finally flows back into the liquid storage tank 37 to form a cycle.

[0138] In short, based on the heat exchange requirement of the inverter 1 being a refrigeration requirement and the heat exchange requirement of the battery 2 being a heating requirement, after the heat exchange medium discharged from the inverter 1 enters the battery 2 to heat the battery 2, the heat exchange medium discharged from the battery 2 can be divided into two cases according to its temperature relative to the inverter 1: if it is lower than the temperature of the inverter 1, it will flow back into the inverter 1 to continue cooling the inverter 1, thereby realizing the energy interaction and recycling between the inverter 1 and the battery 2 and further improving the energy utilization rate; if it is not lower than the temperature of the inverter 1, it will flow back into the liquid storage tank 37.

[0139] Based on the heat exchange requirement of battery 2 being a cooling requirement and the heat exchange requirement of inverter 1 being a heating requirement, after the heat exchange medium discharged from battery 2 enters inverter 1 to heat inverter 1, the heat exchange medium discharged from inverter 1 can be divided into two cases according to its temperature relative to that of battery 2: if it is lower than the temperature of battery 2, it will flow back into battery 2 to continue cooling battery 2, thereby realizing the energy interaction and recycling between inverter 1 and battery 2 and further improving energy utilization efficiency; if it is not lower than the temperature of battery 2, it will flow back into liquid storage tank 37.

[0140] In some exemplary embodiments, the control method further includes:

[0141] Based on the temperature of inverter 1 returning to within the set end heat exchange temperature range of inverter 1, controlling the heat exchange device to stop delivering the heat exchange medium to inverter 1;

[0142] Based on the temperature of battery 2 returning to within the set end heat exchange temperature range of battery 2, controlling the heat exchange device to stop delivering the heat exchange medium to battery 2.

[0143] Among them, the set end heat exchange temperature range of inverter 1 does not exceed the set working temperature range of inverter 1, and can be the same or located within the set working temperature range of inverter 1. The set end heat exchange temperature range of inverter 1 can be a single temperature value or a certain temperature range.

[0144] The set end heat exchange temperature range of battery 2 does not exceed the set working temperature range of battery 2, and can be the same or located within the set working temperature range of battery 2. The set end heat exchange temperature range of battery 2 can be a single temperature value or a certain temperature range.

[0145] The set end heat exchange temperature range of inverter 1 can be the optimal working temperature range of inverter 1, such as 20°C to 25°C.

[0146] The set end heat exchange temperature range of battery 2 can be the optimal working temperature range of battery 2, such as 20°C to 25°C.

[0147] This is beneficial for inverter 1 and battery 2 to be stably within the set working temperature range for a long time, and avoids the heat exchange device from frequently starting and stopping due to inverter 1 and battery 2 being near the critical value of the set working temperature range for a long time.

[0148] In one example, controlling the heat exchange device to stop delivering the heat exchange medium to inverter 1 includes: turning off semiconductor cooler 36, first pump 391, and second pump 392.

[0149] Controlling the heat exchange device to stop delivering the heat exchange medium to battery 2 includes: turning off semiconductor cooler 36, first pump 391, and third pump 393.

[0150] In some exemplary embodiments, before controlling the heat exchange device to stop delivering the heat exchange medium to the battery 2, the control method further includes:

[0151] Based on the temperature of any one or more heat exchange channels 21 of the battery 2 returning to within the set end heat exchange temperature range of the battery 2, disconnect the heat exchange channels 21 with qualified temperature through the sixth control valve 22 and the seventh control valve 23 of the battery 2 until all the heat exchange channels 21 are disconnected, and determine that the temperature of the battery 2 has returned to within the set end heat exchange temperature range of the battery 2.

[0152] Since the temperature difference in different regions within the battery 2 may be very large, the temperature of each region can be precisely controlled through multiple heat exchange channels 21 of the battery 2. When the temperature of a certain region returns to within the set end heat exchange temperature range of the battery 2, the heat exchange channel 21 of that region is closed to avoid wasting energy and to facilitate the temperature of that region to work within the optimal working temperature range. When all the heat exchange channels 21 of the battery 2 are closed, then control the heat exchange device to stop delivering the heat exchange medium to the battery 2.

[0153] It should be noted that whether the inverter 1 and the battery 2 have a heat exchange requirement and the type of heat exchange requirement will change, and there is no necessary correspondence relationship and necessary time association between whether the two (the inverter 1 and the battery 2) have a heat exchange requirement and the type of heat exchange requirement.

[0154] In other words, it can be that when the inverter 1 has a heat exchange requirement: the battery 2 can be in a non-operating state without a heat exchange requirement, and during the operation of the inverter 1, the battery 2 needs to operate and then generates a heat exchange requirement; or, the battery 2 can also be in an operating state but without a heat exchange requirement and generates a heat exchange requirement during subsequent operation; or, the battery 2 can also be in an operating state and also has a heat exchange requirement.

[0155] It can also be that when the battery 2 has a heat exchange requirement: the inverter 1 can be in a non-operating state without a heat exchange requirement, and during the operation of the battery 2, the inverter 1 needs to operate and then generates a heat exchange requirement; or, the inverter 1 can also be in an operating state but without a heat exchange requirement and generates a heat exchange requirement during subsequent operation; or, the inverter 1 can also be in an operating state and also has a heat exchange requirement.

[0156] Therefore, the heat management conditions of the energy management system are not limited to the several situations listed above, and can also include the situation where the inverter 1 alone has a heat exchange requirement and the situation where the battery 2 alone has a heat exchange requirement. In one embodiment, the control logic principle of the energy management system can refer to Figure 10 and Figure 11 as shown. Figure 10 is the control logic starting from the inverter 1,Figure 11 It is the control logic starting from battery 2. Figure 10 The logic of Figure 11 and the logic of Figure 10 can have intersections. The control logic of the energy management system can be adjusted accordingly with the change of whether the inverter 1 and the battery 2 need heat exchange requirements and the heat exchange requirements, so as to meet the heat exchange requirements of the inverter 1 and the battery 2 at different times during long-term use. In Figure 11 , T1max represents the upper limit value of the set working temperature range of the inverter 1, and T1min represents the lower limit value of the set working temperature range of the inverter 1. T2max represents the upper limit value of the set working temperature range of the battery 2, and T2min represents the lower limit value of the set working temperature range of the battery 2. T3 represents the set optimal working temperature of the inverter 1, which is within the set end heat exchange temperature range of the inverter 1. T4 represents the set optimal working temperature of the battery 2, which is within the set end heat exchange temperature range of the battery 2.

[0157] Generally speaking, when only one of the inverter 1 and the battery 2 has a heat exchange requirement, the heat exchange device starts the flow path for cooling / heating the inverter 1 / battery 2 alone to meet the heat exchange requirement of the inverter 1 / battery 2.

[0158] When both the inverter 1 and the battery 2 have heat exchange requirements, if the heat exchange requirements are the same, the corresponding cooling / heating flow path is started.

[0159] If the heat exchange requirements are different, the heat exchange device can give priority to meeting the cooling requirement, and judge whether it is used to meet the heating requirement according to the temperature of the cooling medium after heat exchange. If not, the heating requirement is met by the heating medium.

[0160] If the temperature of the cooling medium after heat exchange can meet the heating requirement, the waste heat of the cooling medium is used to meet the heating requirement through the first waste heat flow path 33; and further judge whether the medium discharged for meeting the heating requirement can continue to be used for cooling. If so, it is continued to be used for cooling through the second waste heat flow path 34, so that the waste heat can be fully utilized and the energy utilization rate can be improved; if not, it is directly discharged to the liquid storage tank 37.

[0161] Of course, for the case where the heat exchange requirements are different, the heating requirement can also be given priority, and judge whether it is used to meet the cooling requirement according to the temperature of the heating medium after heat exchange. If not, the cooling requirement is met by the cooling medium.

[0162] If the temperature of the heat transfer medium after heat exchange can meet the refrigeration demand, the first waste heat flow path 33 is used to meet the refrigeration demand by using the cooled heat transfer medium; and it is further determined whether the medium used to meet the refrigeration demand can continue to be used for heating after being discharged. If it can, it is continued to be used for heating through the second waste heat flow path 34, so that waste heat can be fully utilized and the energy utilization rate can be improved; if not, it is directly discharged to the liquid storage tank 37.

[0163] In summary, for different heat exchange requirements, if the heat of one that needs refrigeration is sufficient to meet the heating demand of the other, but the cold of the latter is not sufficient to meet the refrigeration demand of the former, the heat exchange device preferentially meets the refrigeration demand; if the cold of one that needs heating is sufficient to meet the refrigeration demand of the other, but the heat of the latter is not sufficient to meet the heating demand of the former, the heat exchange device preferentially meets the heating demand. In most cases, the heat of one that needs refrigeration is sufficient to meet the heating demand of the other, but the cold of the latter is not sufficient to meet the refrigeration demand of the former. Therefore, in most cases, the heat exchange device preferentially meets the refrigeration demand.

[0164] The embodiment of the present application also provides a control device, including a processor and a memory storing a computer program. When the processor executes the computer program, the steps of the control method in any of the above embodiments are implemented, and thus all the above beneficial effects are achieved and will not be repeated here.

[0165] The processor may be an integrated circuit chip with signal processing capabilities. The above-mentioned processor may be a general-purpose processor, including a central processing unit (CPU for short), a network processor (NP for short), etc.; 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. The various methods, steps and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0166] The embodiment of the present application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the steps of the control method in any of the above embodiments are implemented, and thus all the above beneficial effects are achieved and will not be repeated here.

[0167] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0168] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0169] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0170] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0171] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0172] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

[0173] In any one or more of the above exemplary embodiments, the functions described can be implemented by hardware, software, firmware, or any combination thereof. If implemented in software, then the functions can be stored on or transmitted via a computer-readable medium as one or more instructions or codes and executed by a hardware-based processing unit. The computer-readable medium can include a computer-readable storage medium corresponding to a tangible medium such as a data storage medium, or a communication medium including any medium that facilitates a computer program, for example, being transmitted from one place to another according to a communication protocol. In this way, the computer-readable medium generally corresponds to a non-transitory tangible computer-readable storage medium or a communication medium such as a signal or a carrier wave. The data storage medium can be any available medium that can be accessed by one or more computers or one or more processors to retrieve the instructions, codes, and / or data structures for implementing the technologies described in this disclosure. A computer program product can include a computer-readable medium.

[0174] By way of example, and not limitation, such computer-readable storage media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, flash memory, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection can be termed a computer-readable medium. By way of example, if instructions are transmitted using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of the medium. However, it should be understood that computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transient media, but rather are directed to non-transitory tangible storage media. As used herein, disk and optical disks include compact disk (CD), laser disk, optical disk, digital versatile disk (DVD), floppy disk, or Blu-ray disk, etc., where disks typically reproduce data magnetically, while optical disks use lasers to optically reproduce data. Combinations of the above should also be included within the scope of computer-readable media.

[0175] By way of example, the instructions can be executed by one or more processors, such as one or more digital signal processors (DSPs), general purpose microprocessors, application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Thus, the term "processor" as used herein can refer to any one of the foregoing structures or any other structure suitable for implementing the techniques described herein. Additionally, in some aspects, the functionality described herein can be provided within dedicated hardware and / or software modules configured for encoding and decoding, or incorporated in a combined codec. Also, the techniques can be fully implemented in one or more circuits or logic elements.

[0176] The technical solutions of the embodiments of the present disclosure can be implemented in a wide variety of devices or apparatuses, including wireless handsets, integrated circuits (ICs), or a group of ICs (e.g., a chipset). The various components, modules, or units described in the embodiments of the present disclosure are emphasized to highlight the functional aspects of the apparatuses configured to execute the described techniques, but do not necessarily need to be implemented by different hardware units. Rather, as described above, the various units can be combined in a codec hardware unit or provided by a collection of interoperating hardware units, including one or more processors as described above, in conjunction with appropriate software and / or firmware.

Claims

1. An energy management system, characterized in that: include: Battery; An inverter, the inverter being configured to control temperature in conjunction with the battery; and A heat exchange device comprises a heating flow path, a cooling flow path, a first waste heat flow path and a control valve assembly, wherein the heating flow path is configured to provide a heating medium to the inverter and the battery, the cooling flow path is configured to provide a cooling medium to the inverter and the battery, and the first waste heat flow path is configured to connect the inverter and the battery so that the inverter and the battery perform heat exchange to realize waste heat utilization; the control valve assembly is configured to control the on-off of the heating flow path with the inverter and the battery, control the on-off of the cooling flow path with the inverter and the battery, and control the on-off of the first waste heat flow path with the inverter and the battery.

2. The energy management system according to claim 1, characterized in that: The heat exchange device also includes a second waste heat flow path, which is configured to cooperate with the inverter, the first waste heat flow path, and the battery to form a waste heat circulation loop so that the refrigerant medium or the heating medium circulates between the inverter and the battery; the control valve assembly is also configured to control the on and off of the second waste heat flow path.

3. The energy management system according to claim 1 or 2, characterized in that: The heat exchange device also includes a heating element, a refrigeration element, a power assembly, a liquid storage tank and a liquid return flow path; The liquid storage tank is configured to provide liquid heat exchange medium to the heating flow path and the cooling flow path; the heating element is configured to heat the heat exchange medium so that the heat exchange medium forms the heating medium, and the cooling element is configured to cool the heat exchange medium so that the heat exchange medium forms the cooling medium; the return liquid flow path is configured to allow the heat exchange medium discharged from the inverter and the battery to flow back to the liquid storage tank; the control valve assembly is also configured to control the connection and disconnection of the liquid storage tank and the heating flow path, the cooling flow path and the return liquid flow path; the power assembly is configured to drive the flow of the heat exchange medium in the heat exchange device.

4. The energy management system according to claim 3, characterized in that: The inverter is provided with a first delivery port, a second delivery port and a third delivery port, the first delivery port is connected to the cooling flow path, the second delivery port is connected to the heating flow path; the third delivery port is communicated with the first delivery port and the second delivery port, and is connected to the first waste heat flow path and the return liquid flow path; The battery is provided with a fourth delivery port, a fifth delivery port and a sixth delivery port, the fourth delivery port is connected to the cooling flow path, the fifth delivery port is connected to the heating flow path; the sixth delivery port is connected to the fourth delivery port and the fifth delivery port, and is connected to the first residual heat flow path and the return liquid flow path; Based on the fact that the heat exchange device also includes a second waste heat flow path, the first delivery port and / or the second delivery port is connected to one end of the second waste heat flow path, and the fourth delivery port and / or the fifth delivery port is connected to the other end of the second waste heat flow path.

5. The energy management system according to claim 4, characterized in that: The control valve assembly includes a first control valve, a second control valve, a third control valve, a fourth control valve and a fifth control valve; The refrigeration circuit includes a refrigeration trunk circuit, a first refrigeration branch circuit, and a second refrigeration branch circuit. The input end of the refrigeration trunk circuit is connected to the liquid storage tank through the first control valve. The output end of the refrigeration trunk circuit is connected to one end of the first refrigeration branch circuit and one end of the second refrigeration branch circuit through the second control valve. The other end of the first refrigeration branch circuit and the other end of the second refrigeration branch circuit are connected to the first delivery port and the fourth delivery port, respectively. The heating flow path includes a heating main path, a first heating branch path, and a second heating branch path. The input end of the heating main path is connected to the liquid storage tank through the first control valve. The output end of the heating main path is connected to one end of the first heating branch path and one end of the second heating branch path through the third control valve. The other end of the first heating branch path and the other end of the second heating branch path are connected to the second delivery port and the fifth delivery port, respectively. The liquid return flow path includes a liquid return main path, a first liquid return branch path, and a second liquid return branch path. One end of the first liquid return branch path, one end of the first residual heat flow path, and the third delivery port are connected through the fourth control valve. The other end of the first residual heat flow path is connected to the sixth delivery port. One end of the second liquid return branch path is connected to the second control valve and / or the third control valve. The other end of the second liquid return branch path, the other end of the first liquid return branch path, and the input end of the liquid return main path are connected through the fifth control valve. The output end of the liquid return main path is connected to the liquid storage tank. The second waste heat flow path includes the first refrigeration branch and the second refrigeration branch; And / or, the second waste heat flow path includes the first heating branch and the second heating branch.

6. The energy management system according to claim 5, characterized in that: A liquid supply path is connected between the first control valve and the liquid storage tank, a liquid infusion path is connected between the third delivery port and the fourth control valve, and the power assembly includes: a first pump arranged on the liquid supply path, a second pump arranged on the liquid infusion path, and a third pump arranged on the first waste heat path.

7. The energy management system according to claim 3, characterized in that: The liquid storage tank is provided with a water inlet connected to an external water source and a drain outlet which can be switched on and off; and / or The heating element and the cooling element are integrated into a semiconductor cooling element.

8. The energy management system according to claim 1 or 2, characterized in that: The battery includes a plurality of heat exchange channels connected in parallel, a sixth control valve and a seventh control valve, one end of the plurality of heat exchange channels are connected via the sixth control valve, the other end of the plurality of heat exchange channels are connected via the seventh control valve, and the sixth control valve and the seventh control valve are configured to control the on and off of each of the heat exchange channels.

9. A control method, characterized in that: For use in an energy management system according to any one of claims 1 to 8, the control method comprises: Determining heat exchange requirements of the inverter and / or the battery; The heat exchange device is controlled according to the heat exchange requirements of the inverter and / or the battery.

10. The control method according to claim 9, characterized in that: Before determining the heat exchange requirements of the inverter and / or the battery, the control method further includes: Acquiring temperature information of the inverter and the battery; determining that the inverter has a heat exchange requirement based on that the temperature of the inverter exceeds a set operating temperature range of the inverter; determining that the battery has a heat exchange requirement based on that the temperature of the battery exceeds a set operating temperature range of the battery; The determining of the heat exchange requirement of the inverter and / or the battery includes: Determining that the heat exchange demand of the inverter is a cooling demand based on that the temperature of the inverter is higher than an upper limit value of a set operating temperature range of the inverter; Based on the temperature of the inverter being lower than a lower limit of a set operating temperature range of the inverter, determining that the heat exchange demand of the inverter is a heating demand; Determining that the heat exchange demand of the battery is a cooling demand based on that the temperature of the battery is higher than an upper limit value of a set operating temperature range of the battery; Based on the temperature of the battery being lower than a lower limit of a set operating temperature range of the battery, it is determined that the heat exchange demand of the battery is a heating demand.

11. The control method according to claim 9 or 10, characterized in that: The controlling the heat exchange device according to the heat exchange requirements of the inverter and / or the battery includes: Based on the heat exchange requirements of the inverter and the battery being both cooling requirements, controlling the control valve assembly to connect the cooling flow path with the inverter and the battery to provide cooling medium to the inverter and the battery; Based on the heat exchange requirements of the inverter and the battery being both heating requirements, controlling the control valve assembly to connect the heating flow path with the inverter and the battery to provide heating medium to the inverter and the battery; Based on the fact that the heat exchange demand of the inverter is a cooling demand and the heat exchange demand of the battery is a heating demand, the control valve assembly is controlled to connect the cooling flow path with the inverter, so as to provide cooling medium to the inverter through the cooling flow path; based on the fact that the temperature of the heat exchange medium discharged from the inverter is higher than the set end heat exchange temperature range of the battery, the control valve assembly is controlled to connect the first waste heat flow path with the inverter and the battery, so as to transport the heat exchange medium discharged after the inverter is heated to the battery through the first waste heat flow path, so as to heat the battery; the set end heat exchange temperature range of the battery does not exceed the set operating temperature range of the inverter; Based on the fact that the heat exchange demand of the battery is a cooling demand and the heat exchange demand of the inverter is a heating demand, the control valve assembly is controlled to connect the cooling flow path with the battery so as to provide a cooling medium to the battery through the cooling flow path; based on determining that the temperature of the heat exchange medium discharged from the battery is higher than the set end heat exchange temperature range of the inverter, the control valve assembly is controlled to connect the first waste heat flow path with the inverter and the battery so as to transport the heat exchange medium discharged after the battery is heated to the inverter through the first waste heat flow path so as to heat the inverter; the set end heat exchange temperature range of the inverter does not exceed the set operating temperature range of the inverter.

12. The control method according to claim 11, characterized in that: The controlling the heat exchange device according to the heat exchange requirements of the inverter and the battery further includes: Based on the fact that the heat exchange demand of the inverter is a cooling demand and the heat exchange demand of the battery is a heating demand, it is determined that the temperature of the heat exchange medium discharged from the battery is lower than the temperature of the inverter, and then the control valve assembly is controlled to conduct the second waste heat flow path of the heat exchange device, so as to transport the heat exchange medium discharged from the battery back to the inverter through the second waste heat flow path, so as to cool the inverter; Based on the fact that the heat exchange demand of the battery is a cooling demand and the heat exchange demand of the inverter is a heating demand, it is determined that the temperature of the heat exchange medium discharged by the inverter is lower than the temperature of the battery, and the control valve assembly is controlled to open the second waste heat flow path of the heat exchange device to transport the heat exchange medium discharged by the inverter back to the battery through the second waste heat flow path to cool the battery.

13. The control method according to claim 10, characterized in that: Also includes: Based on the temperature of the inverter being restored to within the set heat exchange end temperature range of the inverter, controlling the heat exchange device to stop supplying heat exchange medium to the inverter, and the set heat exchange end temperature range of the inverter does not exceed the set operating temperature range of the inverter; Based on the temperature of the battery recovering to within the set end heat exchange temperature range of the battery, the heat exchange device is controlled to stop supplying heat exchange medium to the battery, and the set end heat exchange temperature range of the battery does not exceed the set operating temperature range of the battery.

14. The control method according to claim 13, characterized in that: Also includes: Based on the temperature of any one or more heat exchange channels of the battery recovering to within the set end heat exchange temperature range of the battery, the heat exchange channels that have reached the temperature standard are disconnected by the sixth control valve and the seventh control valve of the battery until all the heat exchange channels are disconnected, thereby determining that the temperature of the battery recovers to within the set end heat exchange temperature range of the battery.

15. A control device, characterized in that: The system comprises a processor and a memory storing a computer program, wherein when the processor executes the computer program, the steps of the control method according to any one of claims 9 to 14 are implemented.

Images