Battery thermal management system and electric device

Abstract

A battery thermal management system and an electric device. The battery thermal management system comprises a heat exchange module, a battery temperature control module, and a heater serving as a heat source; the battery temperature control module comprises a plurality of battery heat exchange parts; the heat exchange module comprises a first heat exchanger serving as a cold source; the first heat exchanger and the heater can be selectively connected to the battery temperature control module; and the plurality of battery heat exchange parts can be selectively connected to a heat exchange medium circulation of the battery temperature control module, respectively.

Description

Battery thermal management systems and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on November 28, 2023, with application number 202311615729.5 and titled “Battery Thermal Management System and Electrical Equipment,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of battery thermal management, and in particular, to a battery thermal management system and an electric device. Background Art

[0004] In liquid-cooled and liquid-heated thermal management systems for new energy vehicle batteries, the battery temperature is determined by the battery system heat exchanger. The heat exchange medium within the battery system heat exchanger absorbs heat from the heater to heat the battery, or releases heat to the refrigerant through the air conditioning system's plate heat exchanger to cool the battery, maintaining a constant battery temperature. The battery system heat exchangers provided in related technologies have a relatively simple structure and can only cool or heat the battery as a whole. However, in reality, the cooling and heating loads required by different battery components vary, resulting in large temperature differences between different battery components, affecting battery performance.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to provide a battery thermal management system and an electrical device to solve the technical problem of large temperature differences between different parts of the battery in the related art.

[0007] In order to achieve the above-mentioned objectives, the present disclosure provides a battery thermal management system, including a heat exchange module, a battery temperature control module and a heater used as a heat source, the battery temperature control module including multiple battery heat exchange parts, the heat exchange module having a first heat exchanger used as a cold source, the first heat exchanger and the heater can be selectively connected to the battery temperature control module, and the multiple battery heat exchange parts can be selectively connected to the heat exchange medium circulation of the battery temperature control module.

[0008] According to one embodiment of the present disclosure, the multiple battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part, the battery temperature control module includes a battery heat exchanger, and the multiple flow channels of the battery heat exchanger are divided into mutually independent first flow channel areas and second flow channel areas. The first flow channel area is formed as a first battery heat exchange part, and the second flow channel area is formed as a second battery heat exchange part.

[0009] According to one embodiment of the present disclosure, the multiple battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part, and the battery temperature control module includes a first battery heat exchanger and a second battery heat exchanger, the first battery heat exchanger is formed as a first battery heat exchange part, and the second battery heat exchanger is formed as a second battery heat exchange part.

[0010] According to an embodiment of the present disclosure, the plurality of battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part, and the first battery heat exchange part and the second battery heat exchange part are arranged in parallel.

[0011] According to an embodiment of the present disclosure, the plurality of battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part, and the first battery heat exchange part and the second battery heat exchange part are selectively connected in parallel or in series.

[0012] According to an embodiment of the present disclosure, the heater and the first heat exchanger are provided on the main road upstream of the diversion port, and the first battery heat exchange unit and the second battery heat exchange unit share the heater and the first heat exchanger.

[0013] According to one embodiment of the present disclosure, the battery thermal management system includes a first heater and a second heater, and the first heater and the second heater are respectively arranged on corresponding parallel branches to heat the heat exchange medium flowing into the first battery heat exchange part and the second battery heat exchange part respectively.

[0014] According to an embodiment of the present disclosure, the first heat exchanger is respectively provided on the parallel branches where the first battery heat exchange portion and the second battery heat exchange portion are located, and the first heat exchangers are connected in parallel to the corresponding parallel branches.

[0015] According to one embodiment of the present disclosure, the battery thermal management system further includes a third heater, which is arranged on the main line upstream of the diversion port, and the first heater, the second heater, and the third heater can be selectively connected to the battery temperature control module respectively.

[0016] According to an embodiment of the present disclosure, the multiple battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part, and the first battery heat exchange part and the second battery heat exchange part are respectively arranged at different positions of the battery.

[0017] According to one embodiment of the present disclosure, the battery temperature control module includes a power component for driving the circulation of a heat exchange medium, a first battery heat exchanger and a second battery heat exchanger connected in parallel, a first valve is provided on a first parallel branch where the first battery heat exchanger is located, and a second valve is provided on a second parallel branch where the second battery heat exchanger is located, the first heat exchanger and the heater are arranged on a main road upstream of the diversion port and are connected in parallel through a first three-way valve.

[0018] According to an embodiment of the present disclosure, the battery thermal management system has at least one of the following modes:

[0019] In the first liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the first valve is open, the second valve is closed, and the power component drives the heat exchange medium to flow through the first heat exchanger and the first battery heat exchanger;

[0020] In the second liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the first valve is closed, the second valve is opened, and the power component drives the heat exchange medium to flow through the first heat exchanger and the second battery heat exchanger;

[0021] In the third liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component. The first valve is open, and the second valve is open. The power component drives the heat exchange medium to flow through the first heat exchanger and then splits into two paths, flowing through the first battery heat exchanger and the second battery heat exchanger at the same time.

[0022] In a fourth liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component. During a first preset time period, the first valve is open and the second valve is closed, and the power component drives the heat exchange medium to flow through the first heat exchanger and the first battery heat exchanger. During a second preset time period, the first valve is closed and the second valve is open, and the power component drives the heat exchange medium to flow through the first heat exchanger and the second battery heat exchanger.

[0023] In the first liquid heating mode, the first three-way valve connects the heater and the power component. When the heater is heated, the first valve is opened and the second valve is closed. The power component drives the heat exchange medium to flow through the heater and the first battery heat exchanger.

[0024] In the second liquid heating mode, the first three-way valve connects the heater and the power component, the heater is heated, the first valve is closed, the second valve is opened, and the power component drives the heat exchange medium to flow through the heater and the second battery heat exchanger;

[0025] In the third liquid-heating mode, the first three-way valve connects the heater and the power component. When the heater is heated, the first valve opens, the second valve opens, and the power component drives the heat exchange medium to flow through the heater and then splits into two paths, flowing through the first battery heat exchanger and the second battery heat exchanger at the same time.

[0026] In a fourth liquid-heating mode, the first three-way valve connects the heater and the power component, the heater is heated, and within a first preset time period, the first valve is opened and the second valve is closed, and the power component drives the heat exchange medium to flow through the heater and the first battery heat exchanger; within a second preset time period, the first valve is closed and the second valve is opened, and the power component drives the heat exchange medium to flow through the heater and the second battery heat exchanger;

[0027] In the temperature equalization mode, the first three-way valve connects the heater and the power component, the heater is turned off for heating, the first valve is opened, the second valve is opened, and the power component drives the heat exchange medium to flow between the first battery heat exchanger and the second battery heat exchanger; and

[0028] In the energy-saving mode, the first three-way valve connects the heater and the power component, the heater turns off heating, and the power component drives the heat exchange medium to flow in the first battery heat exchanger or the second battery heat exchanger.

[0029] According to one embodiment of the present disclosure, the battery temperature control module includes a power component for driving the circulation of a heat exchange medium, a first battery heat exchanger and a second battery heat exchanger connected in parallel, a first valve is provided on the first parallel branch where the first battery heat exchanger is located, and a second valve is provided on the second parallel branch where the second battery heat exchanger is located, the first heat exchanger is arranged on the main road upstream of the diversion port and can be selectively connected through a first three-way valve, the battery thermal management system includes a first heater and a second heater, the first heater is arranged on the first parallel branch through the second three-way valve, and the second heater is arranged on the second parallel branch through the third three-way valve.

[0030] According to an embodiment of the present disclosure, the battery thermal management system has at least one of the following modes:

[0031] In the first liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the second three-way valve short-circuits the first heater, the third three-way valve is closed, the first valve is opened, and the second valve is closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the first battery heat exchanger.

[0032] In the second liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the second three-way valve is closed, the third three-way valve short-circuits the second heater, the first valve is closed, the second valve is opened, and the power component drives the heat exchange medium to flow through the first heat exchanger and the second battery heat exchanger;

[0033] In the third liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the second three-way valve short-circuits the first heater, and the third three-way valve short-circuits the second heater. The first valve is open, the second valve is open, and the power component drives the heat exchange medium to flow through the first heat exchanger and then splits into two paths, flowing through the first battery heat exchanger and the second battery heat exchanger at the same time.

[0034] In the fourth liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component. During a first preset time period, the second three-way valve short-circuits the first heater, the third three-way valve is closed, the first valve is opened, and the second valve is closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the first battery heat exchanger. During a second preset time period, the second three-way valve is closed, the third three-way valve short-circuits the second heater, the first valve is closed, and the second valve is opened. The power component drives the heat exchange medium to flow through the first heat exchanger and the second battery heat exchanger.

[0035] In the first liquid heating mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve directs to the first heater, the third three-way valve is closed, the first heater is heated, the first valve is opened, the second valve is closed, and the power element drives the heat exchange medium to flow through the first heater and the first battery heat exchanger;

[0036] In the second liquid heating mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve is closed, and the third three-way valve directs to the second heater. The second heater heats up, the first valve is closed, the second valve is opened, and the power component drives the heat exchange medium to flow through the second heater and the second battery heat exchanger.

[0037] In the third liquid-heating mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve directs to the first heater, and the third three-way valve directs to the second heater. The first and second heaters are heated, the first and second valves are opened, and the power component drives the heat exchange medium to flow through the heaters and then split into two paths, flowing through the first and second battery heat exchangers at the same time.

[0038] In the fourth liquid-heating mode, the first three-way valve short-circuits the first heat exchanger. Within a first preset time period, the second three-way valve points to the first heater, the third three-way valve is closed, the first heater is heated, the first valve is opened, the second valve is closed, and the power component drives the heat exchange medium to flow through the first heater and the first battery heat exchanger. Within a second preset time period, the first three-way valve short-circuits the first heat exchanger, the second three-way valve is closed, the third three-way valve points to the second heater, the second heater is heated, the first valve is closed, the second valve is opened, and the power component drives the heat exchange medium to flow through the second heater and the second battery heat exchanger.

[0039] In the temperature equalization mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve short-circuits the first heater, and the third three-way valve short-circuits the second heater. The first valve and the second valve are opened, and the power component drives the heat exchange medium to flow between the first battery heat exchanger and the second battery heat exchanger; and

[0040] In energy-saving mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve short-circuits the first heater, and the third three-way valve short-circuits the second heater. The power component drives the heat exchange medium to flow in the first battery heat exchanger or the second battery heat exchanger.

[0041] According to one embodiment of the present disclosure, the battery temperature control module includes a power component for driving the circulation of a heat exchange medium, a first battery heat exchanger and a second battery heat exchanger connected in parallel, a first valve is provided on a first parallel branch where the first battery heat exchanger is located, a second valve is provided on a second parallel branch where the second battery heat exchanger is located, and the first heat exchanger and / or the heater are provided between the power component and the battery heat exchanger.

[0042] According to an embodiment of the present disclosure, the battery thermal management system includes a sixth valve connected between the first valve and the power component.

[0043] The battery thermal management system has a first mode, in which the first valve and the sixth valve are opened, and the power component drives the heat exchange medium to flow through the first heat exchanger and / or the heater and then into the first battery heat exchanger.

[0044] According to an embodiment of the present disclosure, the battery thermal management system includes a second parallel circuit connecting the second valve and the power component, a seventh valve is provided on the second parallel circuit, and a fourth valve is provided between the first parallel branch and the second battery heat exchanger;

[0045] Among them, the battery thermal management system has a second mode, the fourth valve, the second valve and the seventh valve are opened, and the power component drives the heat exchange medium to flow through the first heat exchanger and / or the heater and then flow into the second battery heat exchanger.

[0046] According to one embodiment of the present disclosure, the battery thermal management system includes a sixth valve connected between the first valve and the power component, a seventh valve is provided on the second parallel circuit connecting the second valve and the power component, and a fourth valve is provided between the first parallel branch and the second battery heat exchanger;

[0047] Among them, the battery thermal management system has a third mode, the first valve, the sixth valve, the second valve, the seventh valve and the fourth valve are opened, and the power component drives the heat exchange medium to flow through the first heat exchanger and / or the heater and then is divided into two paths, flowing through the first battery heat exchanger and the second battery heat exchanger at the same time.

[0048] According to one embodiment of the present disclosure, the battery thermal management system further includes a third parallel branch connected in parallel between the first battery heat exchanger and the second battery heat exchanger, a third valve is provided on the third parallel branch, and a seventh valve is provided on the second parallel circuit connecting the second valve and the power component.

[0049] Among them, the battery thermal management system has a fourth mode, the first valve, the third valve, the second valve and the fifth valve are opened, and the power component drives the heat exchange medium to flow through the first heat exchanger and / or the heater, the first battery heat exchanger and the second battery heat exchanger in sequence.

[0050] According to an embodiment of the present disclosure, the heater and / or the first heat exchanger are arranged on the main road upstream of the diversion port and are connected in parallel through a first three-way valve.

[0051] According to one embodiment of the present disclosure, the battery thermal management system includes a first heater and a second heater, the first heater and / or the first heat exchanger are arranged on a first parallel branch through a second three-way valve, and the second heater and / or the first heat exchanger are arranged on a second parallel branch through a third three-way valve.

[0052] According to one embodiment of the present disclosure, the battery temperature control module includes a first battery heat exchanger and a second battery heat exchanger connected in parallel. A first valve is provided on a first parallel branch where the first battery heat exchanger is located, and a second valve is provided on a second parallel branch where the second battery heat exchanger is located. The first heat exchanger and the heater are arranged on a main road upstream of the diversion port and are connected in parallel through a first three-way valve.

[0053] The battery thermal management system further includes a third parallel branch connected in parallel between the first battery heat exchanger and the second battery heat exchanger, wherein a third valve is provided on the third parallel branch.

[0054] A fourth valve is provided on the pipeline connecting the first parallel branch and the third parallel branch, and a fifth valve is provided on the pipeline connecting the second parallel branch and the third parallel branch.

[0055] A sixth valve is provided on the first parallel circuit connecting the first valve and the power element, and a seventh valve is provided on the second parallel circuit connecting the second valve and the power element. The first parallel circuit and the second parallel circuit are arranged in parallel.

[0056] According to an embodiment of the present disclosure, the battery thermal management system has at least one of the following modes:

[0057] In the first liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the first valve and the sixth valve are open, and the remaining valves are closed, and the power component drives the heat exchange medium to flow through the first heat exchanger and the first battery heat exchanger;

[0058] In the second liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the fourth valve, the second valve, and the seventh valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the second battery heat exchanger.

[0059] In the third liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component. The first, sixth, second, seventh, and fourth valves are open, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and then splits into two paths, flowing through the first and second battery heat exchangers simultaneously.

[0060] In the fourth liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component. The first, third, second, and fifth valves are open, and the remaining valves are closed. The power component drives the heat exchange medium to flow sequentially through the first heat exchanger, the first battery heat exchanger, and the second battery heat exchanger.

[0061] In a fifth liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component. During a first preset time period, the first valve and the sixth valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the first battery heat exchanger. During a second preset time period, the fourth valve, the second valve, and the seventh valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the second battery heat exchanger.

[0062] In the first liquid heating mode, the first three-way valve connects the heater and the power component, the heater is heated, the first valve and the sixth valve are opened, and the remaining valves are closed, and the power component drives the heat exchange medium to flow through the heater and the first battery heat exchanger;

[0063] In the second liquid heating mode, the first three-way valve connects the heater and the power component, the heater is heated, the fourth valve, the second valve, and the seventh valve are opened, and the remaining valves are closed, and the power component drives the heat exchange medium to flow through the heater and the second battery heat exchanger;

[0064] In the third liquid-heating mode, the first three-way valve connects the heater and the power component. The heater is heated, the first valve, the sixth valve, the second valve, the seventh valve, and the fourth valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the heater and then splits into two paths, flowing through the first battery heat exchanger and the second battery heat exchanger at the same time.

[0065] In a fourth liquid-heating mode, the first three-way valve connects the heater and the power component. The heater is heated, the first valve, the third valve, the second valve, and the fifth valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the heater, the first battery heat exchanger, and the second battery heat exchanger in sequence.

[0066] In a fifth liquid-heating mode, the first three-way valve connects the heater and the power component, the heater is heated, and within a first preset time period, the first and sixth valves are opened, and the remaining valves are closed, and the power component drives the heat exchange medium to flow through the heater and the first battery heat exchanger. Within a second preset time period, the fourth, second, and seventh valves are opened, and the remaining valves are closed, and the power component drives the heat exchange medium to flow through the heater and the second battery heat exchanger.

[0067] In a first temperature equalization mode, the first three-way valve connects the heater and the power component, the heater is turned off for heating, the first valve, the sixth valve, the second valve, the seventh valve, and the fourth valve are opened, and the remaining valves are closed, and the power component drives the heat exchange medium to flow through the first battery heat exchanger and the second battery heat exchanger simultaneously;

[0068] In a second temperature equalization mode, the first three-way valve connects the heater and the power component, the heater is turned off for heating, the first valve, the third valve, the second valve, and the fifth valve are opened, and the remaining valves are closed, and the power component drives the heat exchange medium to flow through the first battery heat exchanger and the second battery heat exchanger in sequence; and

[0069] In the energy-saving mode, the first three-way valve connects the heater and the power component, the heater turns off heating, and the power component drives the heat exchange medium to flow in the first battery heat exchanger or the second battery heat exchanger.

[0070] According to one embodiment of the present disclosure, the battery temperature control module includes a power component for driving the circulation of a heat exchange medium, a first battery heat exchanger and a second battery heat exchanger connected in parallel, a first valve is provided on a first parallel branch where the first battery heat exchanger is located, and a second valve is provided on a second parallel branch where the second battery heat exchanger is located.

[0071] The first heat exchanger is arranged on the main road upstream of the diversion port and can be selectively connected through a first three-way valve. The battery thermal management system includes a first heater and a second heater. The first heater is arranged on a first parallel branch through a second three-way valve, and the second heater is arranged on a second parallel branch through a third three-way valve.

[0072] The battery thermal management system further includes a third parallel branch connected in parallel between the first battery heat exchanger and the second battery heat exchanger, wherein a third valve is provided on the third parallel branch.

[0073] A fourth valve is provided on the pipeline connecting the first parallel branch and the third parallel branch, and a fifth valve is provided on the pipeline connecting the second parallel branch and the third parallel branch.

[0074] A sixth valve is provided on the first parallel circuit connecting the first valve and the power element, and a seventh valve is provided on the second parallel circuit connecting the second valve and the power element. The first parallel circuit and the second parallel circuit are arranged in parallel.

[0075] According to an embodiment of the present disclosure, the battery thermal management system has at least one of the following modes:

[0076] In the first liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the second three-way valve short-circuits the first heater, the third three-way valve is closed, the first valve and the sixth valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the first battery heat exchanger.

[0077] In the second liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the second three-way valve is closed, the third three-way valve short-circuits the second heater, the fourth valve, the second valve, and the seventh valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the second battery heat exchanger.

[0078] In the third liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the second three-way valve short-circuits the first heater, and the third three-way valve short-circuits the second heater. The first, sixth, second, seventh, and fourth valves are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and then splits into two paths, flowing through the first battery heat exchanger and the second battery heat exchanger at the same time.

[0079] In the fourth liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the second three-way valve short-circuits the first heater, and the third three-way valve short-circuits the second heater. The first, third, second, and fifth valves are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger, the first battery heat exchanger, and the second battery heat exchanger in sequence.

[0080] In the fifth liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component. During a first preset time period, the second three-way valve short-circuits the first heater, the third three-way valve is closed, the first valve and the sixth valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the first battery heat exchanger. During a second preset time period, the second three-way valve is closed, the third three-way valve short-circuits the second heater, the fourth valve, the second valve, and the seventh valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the second battery heat exchanger.

[0081] In the first liquid heating mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve directs to the first heater, the third three-way valve is closed, the first heater is heated, the first valve and the sixth valve are opened, and the remaining valves are closed. The power element drives the heat exchange medium to flow through the first heater and the first battery heat exchanger.

[0082] In the second liquid heating mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve is closed, the third three-way valve directs to the second heater, the second heater heats, the fourth valve, the second valve, and the seventh valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the heater and the second battery heat exchanger.

[0083] In the third liquid heating mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve directs to the first heater, and the third three-way valve directs to the second heater. The first and second heaters are heated, the first, sixth, second, seventh, and fourth valves are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow in two paths, flowing into the first and second heaters for heating respectively, while flowing through the first and second battery heat exchangers.

[0084] In the fourth liquid-heating mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve directs to the first heater, and the third three-way valve directs to the second heater. The first and second heaters heat, the first, third, second, and fifth valves are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heater, the first battery heat exchanger, the second heater, and the second battery heat exchanger in sequence.

[0085] In the fifth liquid-heating mode, the first three-way valve short-circuits the first heat exchanger. During a first preset time period, the second three-way valve points to the first heater, the third three-way valve is closed, the first heater is heated, the first valve and the sixth valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first heater and the first battery heat exchanger. During a second preset time period, the second three-way valve is closed, the third three-way valve points to the second heater, the second heater is heated, the fourth valve, the second valve, and the seventh valve are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the heater and the second battery heat exchanger.

[0086] In the first temperature equalization mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve short-circuits the first heater, and the third three-way valve short-circuits the second heater. The first, sixth, second, seventh, and fourth valves are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first and second battery heat exchangers simultaneously.

[0087] In the second temperature equalization mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve short-circuits the first heater, and the third three-way valve short-circuits the second heater. The first, third, second, and fifth valves are opened, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first and second battery heat exchangers in sequence.

[0088] In energy-saving mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve short-circuits the first heater, and the third three-way valve short-circuits the second heater. The power component drives the heat exchange medium to flow in the first battery heat exchanger or the second battery heat exchanger.

[0089] According to one embodiment of the present disclosure, the heat exchange module includes a compressor, an environmental heat exchanger, an expansion valve, a first heat exchanger and a second heat exchanger connected in sequence, and a four-way reversing valve is provided between the compressor and the environmental heat exchanger.

[0090] According to an embodiment of the present disclosure, the first heat exchanger and the second heat exchanger are connected in parallel, a first electronic expansion valve is provided on the pipeline provided with the first heat exchanger, and a second electronic expansion valve is provided on the pipeline provided with the second heat exchanger.

[0091] According to an embodiment of the present disclosure, in the liquid heating mode,

[0092] The first electronic expansion valve is closed, and the battery temperature control module and the heat exchange module are independent of each other;

[0093] The first electronic expansion valve is opened, the first heat exchanger is connected to the battery temperature control module, and part of the heat of the battery temperature control module is used for the heat exchange module.

[0094] According to an embodiment of the present disclosure, the battery thermal management system further includes a temperature detection element provided upstream or downstream of the multiple battery heat exchange parts to control whether the multiple battery heat exchange parts are working according to information obtained by the temperature detection element.

[0095] According to a second aspect of the present disclosure, there is also provided an electric device comprising the above-mentioned battery thermal management system.

[0096] In the battery thermal management system provided by the present disclosure, multiple battery heat exchangers correspond to different parts of the battery, and the multiple battery heat exchangers are independent of each other. The flow rate and circulation time of the heat exchange medium in each battery heat exchanger can be individually controlled. By controlling the flow of the heat exchange medium in different battery heat exchangers, the temperature of various parts of the battery can be adjusted to achieve a uniform temperature. A first heat exchanger and a heater can be selectively connected to the battery temperature control module as a cold source and a heat source, respectively. The heat exchange medium after dissipating heat through the first heat exchanger (at this time, the heat exchange medium temperature is relatively low) can selectively flow into at least one of the multiple battery heat exchangers to absorb heat from the battery to cool the battery; the heat exchange medium after being heated by the heater (at this time, the heat exchange medium temperature is relatively high) can selectively flow into at least one of the multiple battery heat exchangers to release heat to heat the battery, thereby heating or cooling the heat exchange medium in the battery heat exchanger. This allows for flexible adjustment and precise control of the battery heating and cooling processes, thereby reducing the temperature difference between various parts of the battery. At the same time, the flow channel of each battery heat exchange part is shortened, the flow resistance is reduced, the pressure drop of the heat exchange medium at the inlet and outlet is significantly reduced, and the temperature drop is reduced, which further reduces the battery temperature difference and improves the overall performance of the battery.

[0097] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0098] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0099] FIG1 is a schematic diagram of a battery thermal management system provided in an embodiment of the present disclosure;

[0100] FIG1a is a schematic diagram of a battery thermal management system provided in accordance with an embodiment of the present disclosure (liquid cooling mode);

[0101] FIG1b is a schematic diagram of a battery thermal management system provided in accordance with an embodiment of the present disclosure (liquid thermal mode);

[0102] FIG2 is a schematic diagram of a battery thermal management system provided by a first exemplary embodiment of the present disclosure;

[0103] 2a to 2h are schematic diagrams of a battery thermal management system in different operating modes provided by a first exemplary embodiment of the present disclosure;

[0104] FIG3 is a schematic diagram of a battery thermal management system provided by a second exemplary embodiment of the present disclosure;

[0105] 3a to 3g are schematic diagrams of a battery thermal management system in different operating modes provided by a second exemplary embodiment of the present disclosure;

[0106] FIG4 is a schematic diagram of a battery thermal management system provided by a third exemplary embodiment of the present disclosure;

[0107] 4a to 4j are schematic diagrams of a battery thermal management system in different operating modes provided by a third exemplary embodiment of the present disclosure;

[0108] FIG5 is a schematic diagram of a battery thermal management system provided by a fourth exemplary embodiment of the present disclosure;

[0109] 5a to 5j are schematic diagrams of a battery thermal management system in different operating modes provided by a fourth exemplary embodiment of the present disclosure;

[0110] FIG6 is a schematic diagram of a battery thermal management system provided by a fifth exemplary embodiment of the present disclosure;

[0111] FIG7 is a schematic diagram of a battery heat exchanger in a battery thermal management system according to an exemplary embodiment of the present disclosure.

[0112] Description of Reference Numerals

[0113] 1-Heat exchange module; 10-Battery system heat exchanger; 11-First heat exchanger; 12-Second heat exchanger; 13-Ambient heat exchanger; 14-Compressor; 15-Reversing valve; 16-First electronic expansion valve; 17-Second electronic expansion valve; 18-Expansion valve; 2-Battery temperature control module; 20-Battery heat exchanger; 201-First flow channel area; 202-Second flow channel area; 2000-Flow channel; 2001-First battery heat exchange unit; 2002-Second battery heat exchange unit; 2011-first inlet; 2012-first outlet; 2021-second inlet; 2022-second outlet; 21-first battery heat exchanger; 211-first valve; 22-second battery heat exchanger; 221-second valve; 23-heater; 231-first heater; 232-second heater; 233-third heater; 24-power component; 25-third parallel branch; 251-fourth valve; 252-third valve; 253-fifth valve; 254-sixth valve; 255-seventh valve; 261-first three-way valve; 262-second three-way valve; 263-third three-way valve; 3-temperature detection element; 41-first parallel branch; 42-second parallel branch; 51-first parallel loop; 52-second parallel loop. DETAILED DESCRIPTION

[0114] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0115] In this disclosure, unless otherwise indicated, directional terms such as "upper" and "lower" generally refer to the drawing direction of the corresponding figure. "Upstream" and "Downstream" refer to the flow direction of the heat exchange medium. The terms "first" and "second" are used to distinguish different components and do not indicate order or importance. In addition, in the following description, when referring to the drawings, unless otherwise indicated, the same reference numerals in different drawings indicate the same or similar elements.

[0116] In the relevant embodiments of the present disclosure, in order to achieve heating and cooling of the battery system, as shown in Figure 1, the new energy vehicle battery thermal management system includes a compressor 14, a reversing valve 15, a passenger compartment air conditioning system heat exchanger, a plate heat exchanger, a first electronic expansion valve 16, a second electronic expansion valve 17, an expansion valve 18, an ambient heat exchanger 13, a water pump, a battery system heat exchanger 10, a heater and a three-way valve.

[0117] As shown in Figure 1a, by adjusting the reversing valve 15, the vehicle air conditioning system is set to cooling mode. The refrigerant cycle is as follows: the gaseous low-pressure refrigerant is converted into gaseous high-pressure refrigerant by the compressor 14, then passes through the ambient heat exchanger 13 to release heat and convert into liquid high-pressure refrigerant. The liquid high-pressure refrigerant is converted into liquid low-pressure refrigerant by the expansion valve 18 and then splits into two parallel paths. These paths pass through the passenger compartment air conditioning system heat exchanger and the plate heat exchanger, respectively, to absorb heat and convert into gaseous low-pressure refrigerant. The flow rates of the two refrigerant paths are coordinated by the first electronic expansion valve 16 and the second electronic expansion valve 17. The two gaseous low-pressure refrigerants are then combined and returned to the compressor 14 through the reversing valve 15. In liquid cooling mode, the heat exchange medium circulates as follows: driven by the water pump, the heat exchange medium circulates in the cooling circuit consisting of the water pump, the plate heat exchanger, and the battery system heat exchanger 10. The heat exchange medium releases heat through the plate heat exchanger and reaches a certain temperature. At this time, the liquid low-pressure refrigerant flows in the plate heat exchanger, and then absorbs the heat of the battery when passing through the battery system heat exchanger 10, completing the cooling of the battery system.

[0118] As shown in Figure 1b, the first electronic expansion valve 16 is closed, and the air conditioning system and the liquid heating system operate independently and do not interfere with each other. In liquid heating mode, the heat exchange medium circulates as follows: driven by the water pump, the heat exchange medium circulates through the heating circuit consisting of the water pump, heater, and battery system heat exchanger 10. The heat exchange medium absorbs heat in the heater until it reaches a certain temperature. Then, when it passes through the battery system heat exchanger, it releases heat, completing the heating of the battery system.

[0119] The air conditioning system switches to heating mode by changing the reversing valve 15. The low-pressure gaseous refrigerant is converted to high-pressure gaseous refrigerant by compressor 14. It then passes through the passenger compartment air conditioning system heat exchanger (equivalent to the condenser), releasing heat before being converted to liquid high-pressure refrigerant, heating the passenger compartment. The liquid high-pressure refrigerant is then converted to low-pressure liquid refrigerant by the second electronic expansion valve 17 and expansion valve 18. It then passes through the ambient heat exchanger (equivalent to the evaporator) to absorb heat and convert back to low-pressure gaseous refrigerant. The reversing valve 15 returns it to compressor 14.

[0120] In the above-mentioned embodiment, it is impossible to heat or cool different parts of the battery according to different environments and operating conditions, and it is unable to meet the heating and cooling load requirements of different battery parts, resulting in large temperature differences between different parts of the battery. In addition, the long flow path and high flow resistance of the battery system heat exchanger lead to large pressure and temperature drops at the inlet and outlet of the heat exchange medium, which is not conducive to controlling the temperature difference of the battery, affecting the overall performance of the battery.

[0121] To solve the above problems, as shown in Figures 2 to 6, the present disclosure provides a battery thermal management system, which includes a heat exchange module 1 and a battery temperature control module 2 (shown in a dotted box). The heat exchange module 1 has a first heat exchanger 11 used as a cold source. The first heat exchanger 11 and the heater 23 used as a heat source can be selectively connected to the battery temperature control module 2. When the first heat exchanger 11 is connected to the battery temperature control module 2, the battery is cooled. When the first heat exchanger 11 is not connected to the battery temperature control module 2 and the heater 23 is connected, the battery is heated. The battery temperature control module 2 includes a power component 24 and multiple battery heat exchange parts. The power component 24 can be a water pump. The multiple battery heat exchange parts can be selectively connected to the heat exchange medium circulation of the battery temperature control module 2.

[0122] In the battery thermal management system provided by the present disclosure, multiple battery heat exchange sections correspond to different parts of the battery, and the multiple battery heat exchange sections are independent of each other. The flow rate and circulation time of the heat exchange medium in each battery heat exchange section can be individually controlled. By controlling the flow of the heat exchange medium in different battery heat exchange sections, the temperature of various parts of the battery can be adjusted to achieve a uniform temperature. The first heat exchanger 11 and the heater 23 can be selectively connected to the battery temperature control module 2 as a cold source and a heat source, respectively. The heat exchange medium after dissipating heat through the first heat exchanger 11 (at this time, the heat exchange medium temperature is relatively low) can selectively flow into at least one of the multiple battery heat exchange sections to absorb heat from the battery to cool the battery; the heat exchange medium after being heated by the heater 23 (at this time, the heat exchange medium temperature is relatively high) can selectively flow into at least one of the multiple battery heat exchange sections to release heat to heat the battery. The multiple battery heat exchange sections can cool or heat the battery simultaneously, individually, or alternately, thereby enabling flexible adjustment and precise control of the battery heating and cooling processes, thereby reducing temperature differences between different parts of the battery. At the same time, the flow channel of each battery heat exchange part is shortened, the flow resistance is reduced, the pressure drop of the heat exchange medium at the inlet and outlet is significantly reduced, and the temperature drop is reduced, which further reduces the battery temperature difference and improves the overall performance of the battery.

[0123] There are many ways to configure multiple battery heat exchangers. The following detailed description uses two battery heat exchangers as an example, but the number of battery heat exchangers can be increased as needed. This disclosure includes embodiments that divide the multiple flow channels on a battery heat exchanger into two independent flow channel zones, as well as embodiments that configure two independent battery heat exchangers.

[0124] In an exemplary embodiment of the present disclosure, as shown in FIG6 , the battery temperature control module 2 includes a battery heat exchanger. The battery heat exchanger's multiple flow channels are divided into a first flow channel section 201 and a second flow channel section 202 , each independently of the other. The first flow channel section 201 forms the first battery heat exchange portion, while the second flow channel section 202 forms the second battery heat exchange portion. The first flow channel section 201 and the second flow channel section 202 are each provided with a corresponding heat exchange medium inlet and outlet. The first flow channel section 201 has a first inlet 2011 and a first outlet 2012 , while the second flow channel section 202 has a second inlet 2021 and a second outlet 2022 . The inlet and outlet are located on the same side of the liquid cooling plate. The multiple flow channels connected to the inlet and the multiple flow channels connected to the outlet are interconnected on the side opposite the inlet and outlet. In this way, the heat exchange medium flowing from the inlet flows through the flow channels, converges on the side opposite the inlet and outlet, and then flows out of the outlet, forming a circular flow path. The flow rates of the first and second flow channel sections 201 and 202 can be different and independently controllable.

[0125] In another exemplary embodiment of the present disclosure, the battery temperature control module 2 includes a first battery heat exchanger 21 and a second battery heat exchanger 22. The first battery heat exchanger 21 forms a first battery heat exchange unit, and the second battery heat exchanger 22 forms a second battery heat exchange unit. The two battery heat exchangers are independent of each other and can be controlled separately. This embodiment will be described in detail below. The structures of the first battery heat exchanger 21 and the second battery heat exchanger 22 can be the same or different, and can be selected and designed as needed.

[0126] In the present disclosure, in the embodiments shown in Figures 2 and 3, the first battery heat exchanger 21 and the second battery heat exchanger 22 are connected in parallel. They can be turned on individually (only one of them is used), can be turned on simultaneously (in parallel), or can be turned on alternately (the two battery heat exchangers are not turned on at the same time, and the time periods of turning on are inconsistent). In the embodiments shown in Figures 4 and 5, through the design of pipes and valves, the first battery heat exchanger 21 and the second battery heat exchanger 22 can be selectively connected in parallel or in series. Compared with the embodiments shown in Figures 2 and 3, when turned on at the same time, the two battery heat exchangers can be connected in parallel or in series, first flowing into the first battery heat exchanger 21 and then flowing through the second battery heat exchanger 22. Appropriate selection can be made according to the needs of different environments and working conditions.

[0127] In the present disclosure, in the embodiments shown in Figures 2 and 4, there is one heater 23 (set on the main line), and the first battery heat exchanger 21 and the second battery heat exchanger 22 share the heater 23. The heater 23 is selectively connected to the battery temperature control module 2 (the heater 23 is only connected in the liquid heating mode, and the heater 23 is short-circuited in the liquid cooling mode). In the embodiments shown in Figures 3 and 5, the battery thermal management system includes a first heater 231 and a second heater 232 (set on the branch line). The first heater 231 and the second heater 232 can be selectively connected to the battery temperature control module 2 to heat the heat exchange medium flowing into the first battery heat exchanger 21 and the second battery heat exchanger 22, respectively. A dual heater is used, and heaters are set for the first battery heat exchanger 21 and the second battery heat exchanger 22, respectively. The number of heaters can be designed according to the number of battery heat exchangers.

[0128] In Example 5 shown in FIG6 , the battery thermal management system includes a first heater 231 and a second heater 232 provided on a branch line, and also includes a third heater 233 provided on a main line. The third heater 233 can be connected in parallel or in series (in the series embodiment, in liquid cooling mode, the third heater 233 only circulates and does not heat). By respectively providing heaters on the main line and the branch line, the heating power of the heat exchange medium can be adjusted, and any one of the heaters can be used as a backup to ensure the heating effect on the heat exchange medium. In Example 5, the heaters on the main line and the branch line can be connected at the same time or individually. Taking the simultaneous connection of the third heater 233 on the main line and the first heater 231 on the branch line as an example, the valve arrangement and opening and closing control method are similar to those when they are connected separately. The arrangement of the pipelines and valves in Example 1 can be adopted, or the arrangement of the pipelines and valves in Example 3 can be adopted, both of which fall within the scope of protection of the present disclosure.

[0129] In the present disclosure, a battery assembly may have a first temperature zone and a second temperature zone. The first battery heat exchange unit exchanges heat with the first temperature zone, and the second battery heat exchange unit exchanges heat with the second temperature zone. This embodiment utilizes the first and second battery heat exchange units to achieve heat exchange between different areas of the battery assembly, thereby improving the temperature uniformity of the battery assembly and enhancing the flexibility and convenience of battery temperature regulation. Of course, the number of battery heat exchange units can be designed based on the number and location of temperature zones on the battery assembly and is not limited to two.

[0130] Four embodiments will be described in detail below with reference to the accompanying drawings.

[0131] Example 1 (the first battery heat exchanger 21 and the second battery heat exchanger 22 are connected in parallel and share a heater 23)

[0132] As shown in Figure 2, in this embodiment, the first battery heat exchanger 21 and the second battery heat exchanger 22 are connected in parallel. A first valve 211 is provided on the parallel branch where the first battery heat exchanger 21 is located, and a second valve 221 is provided on the parallel branch where the second battery heat exchanger 22 is located. The first heat exchanger 11 and the heater 23 are arranged on the main road upstream of the diversion port A (in terms of the flow direction in which the heat exchange medium dissipated through the first heat exchanger 11 flows into multiple battery heat exchange parts and then flows back to the first heat exchanger 11 through the power component 24) and are connected in parallel through the first three-way valve 261. By controlling the first valve 211, whether the first battery heat exchanger 21 is open or not is controlled, and by controlling the second valve 221, whether the second battery heat exchanger 22 is open or not is controlled. The two can be controlled separately and independently of each other. The first valve 211, the second valve 221, and the multiple valves to be introduced below can all be electric valves.

[0133] In this embodiment, the heater 23 is connected in parallel with the first heat exchanger 11 via a first three-way valve 261. Controlling the first three-way valve 261 allows switching between liquid cooling and liquid heating modes. By controlling the first three-way valve 261, when the first heat exchanger 11 and the power unit 24 are connected, a first circulation loop is established, which acts as a cooling circuit and cools the battery. When the heater 23 and the power unit 24 are connected, a second circulation loop is established, which heats the battery.

[0134] In Example 1, the liquid cooling mode of the battery thermal management system is one of the following operating modes:

[0135] In the first liquid cooling mode, as shown in FIG2 a , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 . The first valve 211 is open, and the second valve 221 is closed. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the first battery heat exchanger 21 , cooling only the battery portion corresponding to the first battery heat exchanger 21 .

[0136] In the second liquid cooling mode, as shown in FIG2b , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 . The first valve 211 is closed, and the second valve 221 is open. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the second battery heat exchanger 22 , cooling only the battery portion corresponding to the second battery heat exchanger 22 .

[0137] In the third liquid cooling mode, as shown in FIG2c , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 . The first valve 211 is open, and the second valve 221 is open. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and then splits into two paths, flowing through the first battery heat exchanger 21 and the second battery heat exchanger 22 at the same time, cooling the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously.

[0138] In the fourth liquid cooling mode, first three-way valve 261 connects first heat exchanger 11 and power element 24. First valve 211 opens during a first preset time period, and second valve 221 opens during a second preset time period. During the first preset time period, power element 24 drives the heat exchange medium to flow through first heat exchanger 11 and first battery heat exchanger 21. During the second preset time period, power element 24 drives the heat exchange medium to flow through first heat exchanger 11 and second battery heat exchanger 22. That is, the first liquid cooling mode is executed during the first preset time period, and the second liquid cooling mode is executed during the second preset time period. The first and second liquid cooling modes are executed alternately, and the battery portions corresponding to the first battery heat exchanger 21 and the battery portions corresponding to the second battery heat exchanger 22 are cooled alternately.

[0139] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected to cool the battery individually, simultaneously or alternately as needed.

[0140] Accordingly, in this embodiment, the liquid thermal mode of the battery thermal management system is one of the following operating modes:

[0141] In the first liquid heating mode, as shown in FIG2 d , the first three-way valve 261 connects the heater 23 and the power component 24 . The heater 23 heats up, the first valve 211 opens, and the second valve 221 closes. The power component 24 drives the heat exchange medium to flow through the heater 23 and the first battery heat exchanger 21 , heating only the battery portion corresponding to the first battery heat exchanger 21 .

[0142] In the second liquid-heating mode, as shown in FIG2e , the first three-way valve 261 connects the heater 23 and the power component 24 . The heater 23 heats up, the first valve 211 is closed, and the second valve 221 is opened. The power component 24 drives the heat exchange medium to flow through the heater 23 and the second battery heat exchanger 22 , heating only the battery portion corresponding to the second battery heat exchanger 22 .

[0143] In the third liquid-heating mode, as shown in FIG2f , the first three-way valve 261 connects the heater 23 and the power component 24 . The heater 23 is heated, the first valve 211 is opened, and the second valve 221 is opened. The power component 24 drives the heat exchange medium to flow through the heater 23 and then into two paths, flowing through the first battery heat exchanger 21 and the second battery heat exchanger 22 at the same time, heating the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously.

[0144] In the fourth liquid heating mode, the first three-way valve 261 connects the heater 23 and the power component 24, the heater 23 is heated, the first valve 211 is opened within the first preset time period, and the second valve 221 is opened within the second preset time period. Within the first preset time period, the power component 24 drives the heat exchange medium to flow through the heater 23 and the first battery heat exchanger 21. Within the second preset time period, the power component 24 drives the heat exchange medium to flow through the heater 23 and the second battery heat exchanger 22. That is, the first liquid heating mode is executed within the first preset time period, and the second liquid heating mode is executed within the second preset time period. The first liquid heating mode and the second liquid heating mode are executed alternately, and the battery parts corresponding to the first battery heat exchanger 21 and the battery parts corresponding to the second battery heat exchanger 22 are heated alternately.

[0145] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected to heat the battery individually, simultaneously or alternately as needed.

[0146] In this embodiment, the battery thermal management system also has one of the following operating modes:

[0147] In the temperature equalization mode, as shown in FIG2g , the first three-way valve 261 connects the heater 23 and the power component 24 , the heater 23 turns off heating, the first valve 211 is opened, the second valve 221 is opened, and the power component 24 drives the heat exchange medium to flow between the first battery heat exchanger 21 and the second battery heat exchanger 22 ; in this mode, the first heat exchanger 11 is not connected to the battery temperature control module 2 , and the heater 23 is connected to the battery temperature control module 2 but does not heat. The heat exchange medium circulates between multiple battery heat exchange parts to achieve temperature equalization.

[0148] In energy-saving mode, the opening and closing of the first valve 211 and the second valve 221 are controlled based on the temperature of the heat exchange medium in the first battery heat exchanger 21 and the second battery heat exchanger 22. When the temperature of the heat exchange medium exceeds a preset threshold, the corresponding valves are opened, the first three-way valve 261 connects the heater 23 and the power component 24, the heater 23 turns off heating, and the power component 24 drives the heat exchange medium to flow through the first battery heat exchanger 21 or the second battery heat exchanger 22. Taking the fast charging process of the blade battery as an example, the temperature on both sides rises, while the middle area heats up more slowly. At this time, the temperature of the heat exchange medium in the battery heat exchange portion corresponding to the middle area (for example, the first battery heat exchanger 21) is lower than the preset threshold. The first valve 211 is closed, and the heat exchange medium in the first battery heat exchanger 21 does not flow. Only when the temperature of the heat exchange medium reaches the preset threshold does the heat exchange medium circulate inside it, which can reduce the power requirement of the power component 24, reduce energy consumption, and achieve energy saving.

[0149] Example 2 (the first battery heat exchanger 21 and the second battery heat exchanger 22 are connected in parallel, and each is provided with a heater)

[0150] Based on Example 1, Example 2 provides separate heaters for the two battery heat exchangers. As shown in Figure 3, the battery thermal management system includes a first heater 231 and a second heater 232. The first heater 231 is connected in parallel to the pipeline containing the first battery heat exchanger 21 via a second three-way valve 262, and the second heater 232 is connected in parallel to the pipeline containing the second battery heat exchanger 22 via a third three-way valve 263. The first heater 231 is arranged between the shunt inlet of the parallel branch containing the first battery heat exchanger 21 and the first battery heat exchanger 21. When the upper and lower interfaces of the second three-way valve 262 are connected, the first heater 231 is short-circuited, which is in liquid cooling mode. When the second three-way valve 262 is connected to the upper and side interfaces, the first heater 231 is connected, which is in liquid heating mode. The second heater 232 is arranged between the shunt inlet of the parallel branch containing the second battery heat exchanger 22 and the second battery heat exchanger 22. Its connection and short-circuiting methods are similar to those of the first heater 231.

[0151] In Example 2, the liquid cooling mode of the battery thermal management system is one of the following operating modes:

[0152] In the first liquid cooling mode, as shown in FIG3 a , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 , the second three-way valve 262 short-circuits the first heater 231 , the third three-way valve 263 is closed, the first valve 211 is open, and the second valve 221 is closed. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the first battery heat exchanger 21 , cooling only the battery portion corresponding to the first battery heat exchanger 21 ;

[0153] In the second liquid cooling mode, as shown in FIG3b , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 , the second three-way valve 262 is closed, and the third three-way valve 263 short-circuits the second heater 232 . The first valve 211 is closed, and the second valve 221 is open. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the second battery heat exchanger 22 , cooling only the battery portion corresponding to the second battery heat exchanger 22 .

[0154] In the third liquid cooling mode, as shown in FIG3c , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 , the second three-way valve 262 short-circuits the first heater 231 , and the third three-way valve 263 short-circuits the second heater 232 . The first valve 211 is open, and the second valve 221 is open. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and then splits into two paths, flowing through the first battery heat exchanger 21 and the second battery heat exchanger 22 at the same time, cooling the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously.

[0155] In the fourth liquid cooling mode, the first three-way valve 261 connects the first heat exchanger 11 and the power component 24, the second three-way valve 262 short-circuits the first heater 231, the third three-way valve 263 is closed, and the first valve 211 is opened within a first preset time period; the second three-way valve 262 is closed, the third three-way valve 263 short-circuits the second heater 232, and the second valve 221 is opened within a second preset time period. Within the first preset time period, the power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the first battery heat exchanger 21. Within the second preset time period, the power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the second battery heat exchanger 22. That is, the first liquid cooling mode is executed within the first preset time period, and the second liquid cooling mode is executed within the second preset time period. The first liquid cooling mode and the second liquid cooling mode are executed alternately, and the battery parts corresponding to the first battery heat exchanger 21 and the battery parts corresponding to the second battery heat exchanger 22 are cooled alternately.

[0156] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected to cool the battery individually, simultaneously or alternately as needed.

[0157] Accordingly, in this embodiment, the liquid thermal mode of the battery thermal management system is one of the following operating modes:

[0158] In the first liquid-heating mode, as shown in FIG3 d , the first three-way valve 261 points to the diversion inlet of the dual-battery heat exchanger, short-circuiting the first heat exchanger 11. The second three-way valve 262 points to the first heater 231, connecting the first heater 231 and the power component 24. The third three-way valve 263 is closed, the first heater 231 is heating, the first valve 211 is opened, and the second valve 221 is closed. The power component 24 drives the heat exchange medium to flow through the first heater 231 and the first battery heat exchanger 21, so as to heat only the battery portion corresponding to the first battery heat exchanger 21.

[0159] In the second liquid-heating mode, as shown in FIG3e , the first three-way valve 261 points to the diversion inlet of the dual-battery heat exchanger, short-circuiting the first heat exchanger 11. The third three-way valve 263 points to the second heater 232, connecting the second heater 232 and the power component 24. The second three-way valve 262 is closed, the second heater 232 is heating, the first valve 211 is closed, and the second valve 221 is opened. The power component 24 drives the heat exchange medium to flow through the second heater 232 and the second battery heat exchanger 22, heating only the battery portion corresponding to the second battery heat exchanger 22.

[0160] In the third liquid-heating mode, as shown in FIG3f , the first three-way valve 261 points to the diversion inlet of the dual-battery heat exchanger, short-circuiting the first heat exchanger 11. The second three-way valve 262 points to the first heater 231, and the third three-way valve 263 points to the second heater 232. The first valve 211 is open, and the second valve 221 is open. The power component 24 drives the heat exchange medium to split into two paths and flow through the first heater 231 and the second heater 232 respectively, and simultaneously flow through the first battery heat exchanger 21 and the second battery heat exchanger 22, heating the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously.

[0161] In the fourth liquid heating mode, the first three-way valve 261 directs to the diversion inlet of the dual battery heat exchanger, short-circuiting the first heat exchanger 11. The second three-way valve 262 directs to the first heater 231, and the third three-way valve 263 directs to the second heater 232. The second three-way valve 262 and the first valve 211 open synchronously during a first preset time period, while the third three-way valve 263 and the second valve 221 open synchronously during a second preset time period. During the first preset time period, the power component 24 drives the heat exchange medium to flow through the first heater 231 and the first battery heat exchanger 21. During the second preset time period, the power component 24 drives the heat exchange medium to flow through the second heater 232 and the second battery heat exchanger 22. That is, the first liquid heating mode is executed during the first preset time period, and the second liquid heating mode is executed during the second preset time period. The first and second liquid heating modes are executed alternately, heating the battery portion corresponding to the first battery heat exchanger 21 and the battery portion corresponding to the second battery heat exchanger 22 alternately.

[0162] The first battery heat exchanger 21 and the first heater 231 , the second battery heat exchanger 22 and the second heater 232 can be selected as needed to heat the battery individually, simultaneously or alternately.

[0163] In this embodiment, the battery thermal management system also has one of the following operating modes:

[0164] In the temperature equalization mode, as shown in FIG3g , the first three-way valve 261 short-circuits the first heat exchanger 11, the second three-way valve 262 short-circuits the first heater 231, and the third three-way valve 263 short-circuits the second heater 232. The first valve 211 is opened, the second valve 221 is opened, and the power component 24 drives the heat exchange medium to flow between the first battery heat exchanger 21 and the second battery heat exchanger 22. In this mode, the first heat exchanger 11 and the heater 23 are not connected to the battery temperature control module 2, and the heat exchange medium circulates between multiple battery heat exchange parts to achieve temperature equalization.

[0165] In energy-saving mode, the opening and closing of the first valve 211 and the second valve 221 are controlled based on the temperature of the heat exchange medium within the first and second battery heat exchangers 21, 22. When the temperature of the heat exchange medium exceeds a preset threshold, the corresponding valves are opened, the first three-way valve 261 short-circuits the first heat exchanger 11, the second three-way valve 262 short-circuits the first heater 231, and the third three-way valve 263 short-circuits the second heater 232. The power unit 24 then drives the heat exchange medium to flow through the first and second battery heat exchangers 21, 22. The heat exchange medium circulates only when the temperature reaches the preset threshold. This reduces the power requirement of the power unit 24, lowers energy consumption, and achieves energy conservation.

[0166] Example 3 (the first battery heat exchanger 21 and the second battery heat exchanger 22 share the same heater 23 and can be selectively connected in parallel or in series)

[0167] In this embodiment, as shown in Figure 4, the battery temperature control module 2 includes a first battery heat exchanger 21 and a second battery heat exchanger 22 connected in parallel. A first valve 211 is provided on the first parallel branch where the first battery heat exchanger 21 is located, and a second valve 221 is provided on the second parallel branch where the second battery heat exchanger 22 is located. The first heat exchanger 11 and the heater 23 are arranged on the main road upstream of the diversion port and are connected in parallel through a first three-way valve 261. The battery thermal management system also includes a third battery heat exchanger connected in parallel between the first battery heat exchanger 21 and the second battery heat exchanger 22. The three parallel branches 25 are provided with a third valve 252 on the third parallel branch 25, a fourth valve 251 is provided on the pipeline connecting the first parallel branch 41 and the third parallel branch 25, a fifth valve 253 is provided on the pipeline connecting the second parallel branch 42 and the third parallel branch 25, a sixth valve 254 is provided on the first parallel circuit 51 connecting the first valve 211 and the power element 24, and a seventh valve 255 is provided on the second parallel circuit 52 connecting the second valve 221 and the power element 24. The first parallel circuit 51 and the second parallel circuit 52 are arranged in parallel. The number and arrangement of the above valves are not limited to those shown in the figure; valves can be increased or decreased as needed, and in some operating modes, some valves can be used as backup valves.

[0168] Through the arrangement of the above-mentioned pipelines and valves, when the first valve 211 and the sixth valve 254 are open and the other valves are closed, the first battery heat exchanger 21 is opened; when the fourth valve 251, the second valve 221, and the seventh valve 255 are open and the other valves are closed, the second battery heat exchanger 22 is opened; when the first valve 211, the sixth valve 254, the fourth valve 251, the second valve 221, and the seventh valve 255 are open and the other valves are closed, the first battery heat exchanger 21 and the second battery heat exchanger 22 are opened at the same time and connected in parallel; when the first valve 211, the third valve 252, the second valve 221, and the seventh valve 255 are open and the other valves are closed, the first battery heat exchanger 21 and the second battery heat exchanger 22 are opened at the same time and connected in series, which can be selected as needed. Any pipeline connection method that can achieve the selective parallel or series connection of the first battery heat exchanger 21 and the second battery heat exchanger 22 falls within the scope of protection of the present disclosure.

[0169] In Example 3, the liquid cooling mode of the battery thermal management system is one of the following operating modes:

[0170] In the first liquid cooling mode, as shown in FIG4 a , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 . The first valve 211 and the sixth valve 254 are open, and the other valves are closed. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the first battery heat exchanger 21 , cooling only the battery portion corresponding to the first battery heat exchanger 21 .

[0171] In the second liquid cooling mode, as shown in FIG4b , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 . The fourth valve 251 , the second valve 221 , and the seventh valve 255 are open, and the other valves are closed. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the second battery heat exchanger 22 , cooling only the battery portion corresponding to the second battery heat exchanger 22 .

[0172] In the third liquid cooling mode, as shown in FIG4c , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24. The first valve 211, the sixth valve 254, the fourth valve 251, the second valve 221, and the seventh valve 255 are open. When the other valves are closed, the power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and then splits into two paths, flowing through the first battery heat exchanger 21 and the second battery heat exchanger 22 at the same time, cooling the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously.

[0173] In the fourth liquid cooling mode, as shown in FIG4 d , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 . The first valve 211 , the third valve 252 , the second valve 221 , and the seventh valve 255 are open, and the other valves are closed. The power component drives the heat exchange medium to flow sequentially through the first heat exchanger 11 , the first battery heat exchanger 21 , and the second battery heat exchanger 22 , cooling the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 in sequence.

[0174] In the fifth liquid cooling mode, the first three-way valve 261 connects the first heat exchanger 11 and the power component 24, the first valve 211 and the sixth valve 254 are opened synchronously within the first preset time period, and the fourth valve 251, the second valve 221 and the seventh valve 255 are opened synchronously within the second preset time period. Within the first preset time period, the power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the first battery heat exchanger 21. Within the second preset time period, the power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the second battery heat exchanger 22. That is, the first liquid cooling mode is executed within the first preset time period, and the second liquid cooling mode is executed within the second preset time period. The first liquid cooling mode and the second liquid cooling mode are executed alternately, and the battery parts corresponding to the first battery heat exchanger 21 and the battery parts corresponding to the second battery heat exchanger 22 are cooled alternately.

[0175] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected to cool the battery individually, simultaneously or alternately as needed.

[0176] Accordingly, in this embodiment, the liquid thermal mode of the battery thermal management system is one of the following operating modes:

[0177] In the first liquid heating mode, as shown in FIG4e , the first three-way valve 261 connects the heater 23 and the power component 24 . The heater 23 is heated, the first valve 211 and the sixth valve 254 are open, and the other valves are closed. The power component 24 drives the heat exchange medium to flow through the heater 23 and the first battery heat exchanger 21 , heating only the battery portion corresponding to the first battery heat exchanger 21 .

[0178] In the second liquid-heating mode, as shown in FIG4f , the first three-way valve 261 connects the heater 23 and the power component 24 , the heater 23 is heated, the fourth valve 251 , the second valve 221 , and the seventh valve 255 are opened, and the other valves are closed. The power component 24 drives the heat exchange medium to flow through the heater 23 and the second battery heat exchanger 22 , heating only the battery portion corresponding to the second battery heat exchanger 22 ;

[0179] In the third liquid-heating mode, as shown in FIG4g , the first three-way valve 261 connects the heater 23 and the power component 24 . The heater 23 is heated, the first valve 211 , the sixth valve 254 , the fourth valve 251 , the second valve 221 , and the seventh valve 255 are opened, and the other valves are closed. The power component 24 drives the heat exchange medium to flow through the heater 23 and then into two paths, flowing through the first battery heat exchanger 21 and the second battery heat exchanger 22 at the same time, heating the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously.

[0180] In the fourth liquid-heating mode, as shown in FIG4h , the first three-way valve 261 connects the heater 23 and the power component 24 . The heater 23 is heated, the first valve 211 , the third valve 252 , the second valve 221 , and the seventh valve 255 are opened, and the other valves are closed. The power component drives the heat exchange medium to flow through the heater 23 , the first battery heat exchanger 21 , and the second battery heat exchanger 22 in sequence, heating the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 in sequence.

[0181] In the fifth liquid heating mode, the first three-way valve 261 connects the heater 23 and the power component 24. The first valve 211 and the sixth valve 254 are opened synchronously during a first preset time period, and the fourth valve 251, the second valve 221, and the seventh valve 255 are opened synchronously during a second preset time period. During the first preset time period, the power component 24 drives the heat exchange medium to flow through the heater 23 and the first battery heat exchanger 21. During the second preset time period, the power component 24 drives the heat exchange medium to flow through the heater 23 and the second battery heat exchanger 22. That is, the first liquid heating mode is executed during the first preset time period, and the second liquid heating mode is executed during the second preset time period. The first and second liquid heating modes are executed alternately, and the battery portions corresponding to the first battery heat exchanger 21 and the battery portions corresponding to the second battery heat exchanger 22 are heated alternately.

[0182] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected to heat the battery individually, simultaneously or alternately as needed.

[0183] In this embodiment, the battery thermal management system also has at least one of the following operating modes:

[0184] In the first temperature equalization mode, as shown in FIG4i , the first three-way valve 261 connects the heater 23 and the power component 24 , the heater 23 turns off heating, the first valve 211 , the sixth valve 254 , the second valve 221 , the seventh valve 255 and the fourth valve 251 are opened, and the remaining valves are closed. The power component 24 drives the heat exchange medium to flow through the first battery heat exchanger 21 and the second battery heat exchanger 22 at the same time.

[0185] In the second temperature equalization mode, as shown in FIG4j , the first three-way valve 261 connects the heater 23 and the power component 24 , the heater 23 is turned off for heating, the first valve 211 , the third valve 252 , the second valve 221 and the seventh valve 255 are opened, and the remaining valves are closed. The power component 24 drives the heat exchange medium to flow through the first battery heat exchanger 21 and the second battery heat exchanger 22 in sequence.

[0186] In energy-saving mode, the opening and closing of first valve 211 and sixth valve 254, or the opening and closing of second valve 221, fourth valve 251, and seventh valve 255, are controlled based on the temperature of the heat exchange medium in first battery heat exchanger 21 and second battery heat exchanger 22. When the temperature of the heat exchange medium exceeds a preset threshold, the corresponding valves are opened, first three-way valve 261 connects heater 23 and power component 24, heater 23 turns off heating, and power component 24 drives the heat exchange medium to flow through first battery heat exchanger 21 or second battery heat exchanger 22. The beneficial effects of temperature balancing mode and energy-saving mode in this embodiment are similar to those of Embodiment 1 and Embodiment 2 and are not repeated here.

[0187] Example 4 (The first battery heat exchanger 21 and the second battery heat exchanger 22 are each provided with a heater, which can be selectively connected in parallel or in series)

[0188] In this embodiment, as shown in FIG5 , the arrangement of the two heaters is similar to that of embodiment 2, and the arrangement of the two battery heat exchangers that can be selectively connected in parallel or in series is similar to that of embodiment 3, which will not be repeated. In this battery thermal management system, the battery temperature control module 2 includes a first battery heat exchanger 21 and a second battery heat exchanger 22 connected in parallel. A first valve 211 is provided on the first parallel branch where the first battery heat exchanger 21 is located, and a second valve 221 is provided on the second parallel branch where the second battery heat exchanger 22 is located. The first heat exchanger 11 is arranged on the main road upstream of the diversion port and can be selectively connected through a first three-way valve 261. The battery thermal management system includes a first heater 231 and a second heater 232. The first heater 231 is arranged on the first parallel branch through a second three-way valve 262, and the second heater 232 is connected through a third three-way valve 263. Arranged on the second parallel branch, the battery thermal management system also includes a third parallel branch 25 connected in parallel between the first battery heat exchanger 21 and the second battery heat exchanger 22. A third valve 252 is provided on the third parallel branch 25, a fourth valve 251 is provided on the pipeline connecting the first parallel branch and the third parallel branch 25, a fifth valve 253 is provided on the pipeline connecting the second parallel branch and the third parallel branch 25, a sixth valve 254 is provided on the first circuit connecting the first valve 211 and the power component 24, and a seventh valve 255 is provided on the second circuit connecting the second valve 221 and the power component 24. The first circuit and the second circuit are arranged in parallel.

[0189] In embodiment 4, the liquid cooling mode of the battery thermal management system is one of the following operating modes:

[0190] In the first liquid cooling mode, as shown in FIG5 a , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 , the second three-way valve 262 short-circuits the first heater 231 , the third three-way valve 263 is closed, the first valve 211 and the sixth valve 254 are open, and the other valves are closed. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the first battery heat exchanger 21 , cooling only the battery portion corresponding to the first battery heat exchanger 21 ;

[0191] In the second liquid cooling mode, as shown in FIG5 b , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 , the second three-way valve 262 is closed, the third three-way valve 263 short-circuits the second heater 232 , the second valve 221 and the seventh valve 255 are open, and the other valves are closed. The power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and the second battery heat exchanger 22 , cooling only the battery portion corresponding to the second battery heat exchanger 22 ;

[0192] In the third liquid cooling mode, as shown in FIG5 c , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24, the second three-way valve 262 short-circuits the first heater 231, and the third three-way valve 263 short-circuits the second heater 232. The first valve 211, the sixth valve 254, the fourth valve 251, the second valve 221, and the seventh valve 255 are open. When the other valves are closed, the power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and then into two paths, flowing through the first battery heat exchanger 21 and the second battery heat exchanger 22 at the same time, and the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 are cooled simultaneously.

[0193] In the fourth liquid cooling mode, as shown in FIG5 d , the first three-way valve 261 connects the first heat exchanger 11 and the power component 24 , the second three-way valve 262 short-circuits the first heater 231 , and the third three-way valve 263 short-circuits the second heater 232 . The first valve 211 , the third valve 252 , the second valve 221 , and the seventh valve 255 are opened, and the other valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger 11 , the first battery heat exchanger 21 , and the second battery heat exchanger 22 in sequence, cooling the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 in sequence.

[0194] In the fifth liquid cooling mode, the first three-way valve 261 connects the first heat exchanger 11 and the power component 24, the second three-way valve 262 short-circuits the first heater 231, the first valve 211 and the sixth valve 254 are open during a first preset time period, the third three-way valve 263 short-circuits the second heater 232, and the second valve 221 and the seventh valve 255 are open during a second preset time period. During the first preset time period, the power component 24 drives the heat exchange medium through the first heat exchanger 11 and the first battery heat exchanger 21. During the second preset time period, the power component 24 drives the heat exchange medium through the first heat exchanger 11 and the second battery heat exchanger 22. The first liquid cooling mode is executed during the first preset time period, and the second liquid cooling mode is executed during the second preset time period. The first and second liquid cooling modes are executed alternately, cooling the battery portions corresponding to the first battery heat exchanger 21 and the battery portions corresponding to the second battery heat exchanger 22 alternately.

[0195] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected to cool the battery individually, simultaneously or alternately as needed.

[0196] Accordingly, in this embodiment, the liquid thermal mode of the battery thermal management system is one of the following operating modes:

[0197] In the first liquid-heating mode, as shown in FIG5e , the first three-way valve 261 is directed to the diversion inlet of the dual-battery heat exchanger, short-circuiting the first heat exchanger 11. The second three-way valve 262 is directed to the first heater 231, connecting the first heater 231 and the power component 24. The first valve 211 and the sixth valve 254 are open, and the other valves are closed. The power component 24 drives the heat exchange medium to flow through the first heater 231 and the first battery heat exchanger 21, thereby heating only the battery portion corresponding to the first battery heat exchanger 21.

[0198] In the second liquid-heating mode, as shown in FIG5f , the first three-way valve 261 points to the diversion inlet of the dual-battery heat exchanger, and the third three-way valve 263 points to the second heater 232, connecting the second heater 232 and the power component 24. The fourth valve 251, the second valve 221, and the seventh valve 255 are open, and the other valves are closed. The power component 24 drives the heat exchange medium to flow through the second heater 232 and the second battery heat exchanger 22, heating only the battery portion corresponding to the second battery heat exchanger 22.

[0199] In the third liquid-heating mode, as shown in FIG5g , the first three-way valve 261 points to the diversion inlet of the dual-battery heat exchanger, the second three-way valve 262 points to the first heater 231, and the third three-way valve 263 points to the second heater 232. The first valve 211, the sixth valve 254, the fourth valve 251, the second valve 221, and the seventh valve 255 are open, and the other valves are closed. The power component 24 drives the heat exchange medium to flow in two paths, respectively through the first heater 231 and the second heater 232, and simultaneously through the first battery heat exchanger 21 and the second battery heat exchanger 22, heating the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously.

[0200] In the fourth liquid-heating mode, as shown in FIG5h , the first three-way valve 261 points to the diversion inlet of the dual-battery heat exchanger, short-circuiting the first heat exchanger 11. The second three-way valve 262 points to the first heater 231, and the third three-way valve 263 points to the second heater 232. The first valve 211, the third valve 252, the second valve 221, and the seventh valve 255 are open, and the other valves are closed. The power component drives the heat exchange medium to flow through the heater 23, the first battery heat exchanger 21, and the second battery heat exchanger 22 in sequence, heating the battery parts corresponding to the first battery heat exchanger 21 and the second battery heat exchanger 22 in sequence.

[0201] In the fifth liquid-heat mode, the first three-way valve 261 points to the diversion inlet of the dual battery heat exchanger, the second three-way valve 262 points to the first heater 231, the first valve 211 and the sixth valve 254 are opened and executed synchronously within the first preset time period, the third three-way valve 263 points to the second heater 232, the fourth valve 251, the second valve 221 and the seventh valve 255 are opened and executed synchronously within the second preset time period. Within the first preset time period, the power component 24 drives the heat exchange medium to flow through the first heater 231 and the first battery heat exchanger 21. Within the second preset time period, the power component 24 drives the heat exchange medium to flow through the second heater 232 and the second battery heat exchanger 22. The battery parts corresponding to the first battery heat exchanger 21 and the battery parts corresponding to the second battery heat exchanger 22 are cooled alternately.

[0202] The first battery heat exchanger 21 and the first heater 231 , the second battery heat exchanger 22 and the second heater 232 can be selected as needed to heat the battery individually, simultaneously or alternately.

[0203] In this embodiment, the battery thermal management system also has at least one of the following operating modes:

[0204] In the first temperature equalization mode, as shown in FIG5i , the first three-way valve 261 short-circuits the first heat exchanger 11, the second three-way valve 262 short-circuits the first heater 231, and the third three-way valve 263 short-circuits the second heater 232. The first valve 211, the sixth valve 254, the second valve 221, the seventh valve 255, and the fourth valve 251 are opened, and the remaining valves are closed. The power component 24 drives the heat exchange medium to flow through the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously.

[0205] In the second temperature equalization mode, as shown in FIG5j , the first three-way valve 261 short-circuits the first heat exchanger 11, the second three-way valve 262 short-circuits the first heater 231, and the third three-way valve 263 short-circuits the second heater 232. The first valve 211, the third valve 252, the second valve 221, and the seventh valve 255 are opened, and the remaining valves are closed. The power component 24 drives the heat exchange medium to flow through the first battery heat exchanger 21 and the second battery heat exchanger 22 in sequence; and

[0206] In energy-saving mode, the first three-way valve 261 short-circuits the first heat exchanger 11, the second three-way valve 262 short-circuits the first heater 231, and the third three-way valve 263 short-circuits the second heater 232, controlling the opening and closing of the first valve 211 and the sixth valve 254, or controlling the opening and closing of the second valve 221, the fourth valve 251, and the seventh valve 255. When the temperature of the heat exchange medium is greater than a preset threshold, the corresponding valve is opened, and the power component 24 drives the heat exchange medium to flow in the first battery heat exchanger 21 or the second battery heat exchanger 22.

[0207] As shown in Figure 2, the battery thermal management system provided by the present disclosure also includes a temperature detection element 3 located upstream or downstream of the multiple battery heat exchange units to control the operation of the multiple battery heat exchange units based on information obtained by the temperature detection element 3. The temperature detection element 3 can be a temperature sensor that can monitor the temperature of the heat exchange medium at the inlet or outlet of the battery heat exchanger, thereby adjusting the heating power of the heater, the opening or closing or opening degree of each valve, and the flow rate and circulation time of the heat exchange medium, thereby collaboratively controlling the first battery heat exchanger 21 and the second battery heat exchanger 22 to meet the different heat exchange requirements of the batteries.

[0208] The heat exchange module 1 can be any heat exchange structure that can provide a cold source. Taking the air conditioning module as an example, the air conditioning module includes a compressor 14, an ambient heat exchanger 13, an expansion valve 18, a first heat exchanger 11, and a second heat exchanger 12 connected in sequence. A reversing valve 15 is provided between the compressor 14 and the ambient heat exchanger 13. By controlling the reversing valve 15, the liquid cooling mode and the liquid heating mode are switched. The gaseous high-pressure refrigerant compressed by the compressor 14 flows to one side of the ambient heat exchanger 13, which is the cooling mode. On the contrary, it flows to the side where the second heat exchanger 12 is located, which is the heating mode. For details, please refer to the relevant description of Figure 1, and no repeated limitations are made here.

[0209] In the present disclosure, a first heat exchanger 11 and a second heat exchanger 12 are connected in parallel. A first electronic expansion valve 16 is provided on the pipeline containing the first heat exchanger 11, and a second electronic expansion valve 17 is provided on the pipeline containing the second heat exchanger 12. In liquid heating mode, the first electronic expansion valve 16 can be closed, and the air conditioning system and the battery temperature control module 2 do not interfere with each other. As shown in Figure 2h, the first electronic expansion valve 16 can also be opened, and the first heat exchanger 11 is connected to the battery temperature control module 2 (either directly in series or in parallel using a first three-way valve 261). Part of the heat from the battery temperature control module 2 is used in the heat exchange module 1, achieving energy recovery and efficient utilization. This is particularly suitable for low ambient temperatures, such as when the air conditioning system cannot meet the requirements of passenger compartment heating.

[0210] According to a second aspect of the present disclosure, an electrical device is provided, including the battery thermal management system described above. This electrical device possesses all the beneficial effects of the aforementioned battery thermal management system, and will not be further elaborated herein. This electrical device may be a vehicle, an energy storage cabinet, an unmanned aerial vehicle, or the like, without limitation in this disclosure.

[0211] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0212] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

Claims

1. A battery thermal management system, characterized in that: include: A heat exchange module (1), wherein the heat exchange module (1) has a first heat exchanger (11) serving as a cold source; A battery temperature control module (2), the battery temperature control module (2) comprising a plurality of battery heat exchange parts (200), and A heater (23) used as a heat source, wherein The first heat exchanger (11) and the heater (23) can be selectively connected to the battery temperature control module (2), and the multiple battery heat exchange parts (200) can be selectively connected to the heat exchange medium circulation of the battery temperature control module (2).

2. The battery thermal management system according to claim 1, characterized in that: The multiple battery heat exchange parts (200) include a first battery heat exchange part (2001) and a second battery heat exchange part (2002); the battery temperature control module (2) includes a battery heat exchanger (20); the multiple flow channels (2000) of the battery heat exchanger (20) are divided into mutually independent first flow channel areas (201) and second flow channel areas (202); the first flow channel area (201) is formed as the first battery heat exchange part (2001), and the second flow channel area (202) is formed as the second battery heat exchange part (2002).

3. The battery thermal management system according to claim 1, characterized in that: The multiple battery heat exchange parts (200) include a first battery heat exchange part (2001) and a second battery heat exchange part (2002); the battery temperature control module (2) includes a first battery heat exchanger (21) and a second battery heat exchanger (22); the first battery heat exchanger (21) is formed as the first battery heat exchange part (2001), and the second battery heat exchanger (22) is formed as the second battery heat exchange part (2002).

4. The battery thermal management system according to any one of claims 1 to 3, characterized in that: The plurality of battery heat exchange units (200) include a first battery heat exchange unit (2001) and a second battery heat exchange unit (2002), wherein the first battery heat exchange unit (2001) and the second battery heat exchange unit (2002) are arranged in parallel.

5. The battery thermal management system according to any one of claims 1 to 3, characterized in that: The plurality of battery heat exchange parts (200) include a first battery heat exchange part (2001) and a second battery heat exchange part (2002), wherein the first battery heat exchange part (2001) and the second battery heat exchange part (2002) are selectively connected in parallel or in series.

6. The battery thermal management system according to claim 4 or 5, characterized in that: The heater (23) and the first heat exchanger (11) are arranged on a main road located upstream of the diversion port (A), and the first battery heat exchange unit (2001) and the second battery heat exchange unit (2002) share the heater (23) and the first heat exchanger (11).

7. The battery thermal management system according to claim 4 or 5, characterized in that: The battery thermal management system comprises a first heater (231) and a second heater (232), wherein the first heater (231) and the second heater (232) are respectively arranged on corresponding parallel branches to heat the heat exchange medium flowing into the first battery heat exchange part (2001) and the second battery heat exchange part (2002) respectively.

8. The battery thermal management system according to claim 4 or 5, characterized in that: The first heat exchanger (11) is respectively provided on the parallel branches where the first battery heat exchange part (2001) and the second battery heat exchange part (2002) are located, and the first heat exchanger (11) is connected in parallel to the corresponding parallel branches.

9. The battery thermal management system according to claim 7 or 8, characterized in that: The battery thermal management system further comprises a third heater (233), the third heater (233) being arranged on a main path upstream of the diversion port (A), and the first heater (231), the second heater (232), and the third heater (233) being selectively connected to the battery temperature control module (2).

10. The battery thermal management system according to any one of claims 1 to 9, characterized in that: The multiple battery heat exchange parts (200) include a first battery heat exchange part (2001) and a second battery heat exchange part (2002), and the first battery heat exchange part (2001) and the second battery heat exchange part (2002) are respectively arranged at different positions of the battery.

11. The battery thermal management system according to any one of claims 1 to 10, characterized in that: The battery temperature control module (2) comprises a power part (24) for driving a heat exchange medium to circulate, a first battery heat exchanger (21) and a second battery heat exchanger (22) connected in parallel, a first valve (211) being provided on a first parallel branch (41) where the first battery heat exchanger (21) is located, a second valve (221) being provided on a second parallel branch (42) where the second battery heat exchanger (22) is located, the first heat exchanger (11) and the heater (23) being arranged on a main road located upstream of the diversion port (A) and connected in parallel via a first three-way valve (261).

12. The battery thermal management system according to claim 11, characterized in that: The battery thermal management system has at least one of the following modes: In a first liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the first valve (211) is opened, the second valve (221) is closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21); In a second liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the first valve (211) is closed, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the second battery heat exchanger (22); In a third liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the first valve (211) is opened, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and then is divided into two paths, flowing through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time; In a fourth liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24); within a first preset time period, the first valve (211) is opened, the second valve (221) is closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21); within a second preset time period, the first valve (211) is closed, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the second battery heat exchanger (22); In a first liquid heating mode, the first three-way valve (261) connects the heater (23) and the power element (24), the heater (23) is heated, the first valve (211) is opened, the second valve (221) is closed, and the power element (24) drives the heat exchange medium to flow through the heater (23) and the first battery heat exchanger (21); In a second liquid heating mode, the first three-way valve (261) connects the heater (23) and the power element (24), the heater (23) is heated, the first valve (211) is closed, the second valve (221) is opened, and the power element (24) drives the heat exchange medium to flow through the heater (23) and the second battery heat exchanger (22); In a third liquid heating mode, the first three-way valve (261) connects the heater (23) and the power element (24), the heater (23) is heated, the first valve (211) is opened, the second valve (221) is opened, and the power element (24) drives the heat exchange medium to flow through the heater (23) and then be divided into two paths, flowing through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time; In a fourth liquid heating mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) is heated, within a first preset time period, the first valve (211) is opened, the second valve (221) is closed, and the power component (24) drives the heat exchange medium to flow through the heater (23) and the first battery heat exchanger (21); within a second preset time period, the first valve (211) is closed, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow through the heater (23) and the second battery heat exchanger (22); In the temperature equalization mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) turns off heating, the first valve (211) opens, the second valve (221) opens, and the power component (24) drives the heat exchange medium to flow between the first battery heat exchanger (21) and the second battery heat exchanger (22); as well as In energy-saving mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) turns off heating, and the power component (24) drives the heat exchange medium to flow in the first battery heat exchanger (21) or the second battery heat exchanger (22).

13. The battery thermal management system according to any one of claims 1 to 10, characterized in that: The battery temperature control module (2) comprises a power part (24) for driving the circulation of a heat exchange medium, a first battery heat exchanger (21) and a second battery heat exchanger (22) connected in parallel, a first valve (211) being provided on a first parallel branch (41) where the first battery heat exchanger (21) is located, and a second valve (221) being provided on a second parallel branch (42) where the second battery heat exchanger (22) is located, the first heat exchanger (11) being arranged on a main road located upstream of the diversion port (A) and being selectively connected via a first three-way valve (261), the battery thermal management system comprising a first heater (231) and a second heater (232), the first heater (231) being arranged on the first parallel branch (41) via a second three-way valve (262), and the second heater (232) being arranged on the second parallel branch (42) via a third three-way valve (263).

14. The battery thermal management system according to claim 13, characterized in that: The battery thermal management system has at least one of the following modes: In a first liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) is closed, the first valve (211) is opened, the second valve (221) is closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21); In the second liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the second three-way valve (262) is closed, the third three-way valve (263) short-circuits the second heater (232), the first valve (211) is closed, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the second battery heat exchanger (22); In the third liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power element (24), the second three-way valve (262) short-circuits the first heater (231), and the third three-way valve (263) short-circuits the second heater (232). The first valve (211) is opened, and the second valve (221) is opened. The power element (24) drives the heat exchange medium to flow through the first heat exchanger (11) and then is divided into two paths, flowing through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time. In a fourth liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24); within a first preset time period, the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) is closed, the first valve (211) is opened, the second valve (221) is closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21); within a second preset time period, the second three-way valve (262) is closed, the third three-way valve (263) short-circuits the second heater (232), the first valve (211) is closed, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the second battery heat exchanger (22); In a first liquid heating mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) points to the first heater (231), the third three-way valve (263) is closed, the first heater (231) is heated, the first valve (211) is opened, the second valve (221) is closed, and the power element (24) drives the heat exchange medium to flow through the first heater (231) and the first battery heat exchanger (21); In the second liquid heating mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) is closed, the third three-way valve (263) points to the second heater (232), the second heater (232) is heated, the first valve (211) is closed, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow through the second heater (232) and the second battery heat exchanger (22); In the third liquid heating mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) points to the first heater (231), and the third three-way valve (263) points to the second heater (232). The first heater (231) and the second heater (232) are heated, the first valve (211) is opened, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow through the heater (23) and then be divided into two paths, and flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time; In a fourth liquid heating mode, the first three-way valve (261) short-circuits the first heat exchanger (11); within a first preset time period, the second three-way valve (262) points to the first heater (231), the third three-way valve (263) is closed, the first heater (231) is heated, the first valve (211) is opened, the second valve (221) is closed, and the power component (24) drives the heat exchange medium to flow through the first heater (231) and the first battery heat exchanger (21); within a second preset time period, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) is closed, the third three-way valve (263) points to the second heater (232), the second heater (232) is heated, the first valve (211) is closed, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow through the second heater (232) and the second battery heat exchanger (22); In the temperature equalization mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) short-circuits the second heater (232), the first valve (211) is opened, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to flow between the first battery heat exchanger (21) and the second battery heat exchanger (22); as well as In the energy-saving mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) short-circuits the second heater (232), and the power component (24) drives the heat exchange medium to flow in the first battery heat exchanger (21) or the second battery heat exchanger (22).

15. The battery thermal management system according to any one of claims 1 to 10, characterized in that: The battery temperature control module (2) comprises a power component (24) for driving a heat exchange medium to circulate, a first battery heat exchanger (21) and a second battery heat exchanger (22) connected in parallel, a first valve (211) being provided on a first parallel branch (41) where the first battery heat exchanger (21) is located, a second valve (221) being provided on a second parallel branch (42) where the second battery heat exchanger (22) is located, and the first heat exchanger (11) and / or the heater (23) being provided between the power component (24) and the battery heat exchanger (20).

16. The battery thermal management system according to claim 15, characterized in that: The battery thermal management system comprises a sixth valve (254) connected between the first valve (211) and the power component (24), The battery thermal management system has a first mode, the first valve (211) and the sixth valve (254) are opened, the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and / or the heater (23) and then flow into the first battery heat exchanger (21).

17. The battery thermal management system according to claim 15 or 16, characterized in that: The battery thermal management system comprises a second parallel circuit (52) connecting the second valve (221) and the power component (24), a seventh valve (255) is provided on the second parallel circuit (52), and a fourth valve (251) is provided between the first parallel branch (41) and the second battery heat exchanger (22); The battery thermal management system has a second mode, the fourth valve (251), the second valve (221) and the seventh valve (255) are opened, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and / or the heater (23) and then flow into the second battery heat exchanger (22).

18. The battery thermal management system according to any one of claims 15 to 17, characterized in that: The battery thermal management system comprises a first parallel circuit (51) connecting the first valve (211) and the power component (24), a sixth valve (254) being provided on the first parallel circuit (51), a seventh valve (255) being provided on the second parallel circuit (52) connecting the second valve (221) and the power component (24), and a fourth valve (251) being provided between the first parallel branch (41) and the second battery heat exchanger (22); The battery thermal management system has a third mode, wherein the first valve (211), the sixth valve (254), the second valve (221), the seventh valve (255) and the fourth valve (251) are opened, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and / or the heater (23) and then is divided into two paths, and flows through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time.

19. The battery thermal management system according to any one of claims 15 to 18, characterized in that: The battery thermal management system further comprises a third parallel branch (25) connected in parallel between the first battery heat exchanger (21) and the second battery heat exchanger (22), a third valve (252) being provided on the third parallel branch (25), a seventh valve (255) being provided on the second parallel circuit (52) connecting the second valve (221) and the power component (24), The battery thermal management system has a fourth mode, wherein the first valve (211), the third valve (252), the second valve (221) and the seventh valve (255) are opened, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and / or the heater (23), the first battery heat exchanger (21) and the second battery heat exchanger (22) in sequence.

20. The battery thermal management system according to any one of claims 15 to 19, characterized in that: The heater (23) and / or the first heat exchanger (11) are arranged on a main line upstream of the diversion port (A) and are connected in parallel via a first three-way valve (261).

21. The battery thermal management system according to any one of claims 15 to 19, characterized in that: The battery thermal management system comprises a first heater (231) and a second heater (232); the first heater (231) and / or the first heat exchanger (11) are arranged on a first parallel branch (41) via a second three-way valve (262); and the second heater (232) and / or the first heat exchanger (11) are arranged on a second parallel branch (42) via a third three-way valve (263).

22. The battery thermal management system according to any one of claims 1 to 21, characterized in that: The battery temperature control module (2) comprises a power part (24) for driving a heat exchange medium to circulate, a first battery heat exchanger (21) and a second battery heat exchanger (22) connected in parallel, a first valve (211) being provided on a first parallel branch (41) where the first battery heat exchanger (21) is located, a second valve (221) being provided on a second parallel branch (42) where the second battery heat exchanger (22) is located, the first heat exchanger (11) and the heater (23) being arranged on a main road located upstream of the diversion port (A) and being connected in parallel via a first three-way valve (261), The battery thermal management system further comprises a third parallel branch (25) connected in parallel between the first battery heat exchanger (21) and the second battery heat exchanger (22), wherein the third parallel branch (25) is provided with a third valve (252). A fourth valve (251) is provided on the pipeline connecting the first parallel branch (41) and the third parallel branch (25), and a fifth valve (253) is provided on the pipeline connecting the second parallel branch (42) and the third parallel branch (25). A sixth valve (254) is provided on the first parallel circuit (51) connecting the first valve (211) and the power member (24), and a seventh valve (255) is provided on the second parallel circuit (52) connecting the second valve (221) and the power member (24). The first parallel circuit (51) and the second parallel circuit (52) are arranged in parallel.

23. The battery thermal management system according to claim 22, characterized in that: The battery thermal management system has at least one of the following modes: In a first liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the first valve (211) and the sixth valve (254) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21); In the second liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the fourth valve (251), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the second battery heat exchanger (22); In the third liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the first valve (211), the sixth valve (254), the second valve (221), the seventh valve (255) and the fourth valve (251) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and then is divided into two paths, and flows through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time; In a fourth liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the first valve (211), the third valve (252), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11), the first battery heat exchanger (21) and the second battery heat exchanger (22) in sequence; In a fifth liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24); within a first preset time period, the first valve (211) and the sixth valve (254) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21); within a second preset time period, the fourth valve (251), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the second battery heat exchanger (22); In a first liquid heating mode, the first three-way valve (261) connects the heater (23) and the power element (24), the heater (23) is heated, the first valve (211) and the sixth valve (254) are opened, and the remaining valves are closed, and the power element (24) drives the heat exchange medium to flow through the heater (23) and the first battery heat exchanger (21); In the second liquid heating mode, the first three-way valve (261) connects the heater (23) and the power element (24), the heater (23) is heated, the fourth valve (251), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power element (24) drives the heat exchange medium to flow through the heater (23) and the second battery heat exchanger (22); In a third liquid heating mode, the first three-way valve (261) connects the heater (23) and the power element (24), the heater (23) is heated, the first valve (211), the sixth valve (254), the second valve (221), the seventh valve (255) and the fourth valve (251) are opened, and the remaining valves are closed, and the power element (24) drives the heat exchange medium to flow through the heater (23) and then be divided into two paths, and flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time; In a fourth liquid heating mode, the first three-way valve (261) connects the heater (23) and the power element (24), the heater (23) is heated, the first valve (211), the third valve (252), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power element (24) drives the heat exchange medium to flow through the heater (23), the first battery heat exchanger (21) and the second battery heat exchanger (22) in sequence; In a fifth liquid-heating mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) is heated, within a first preset time period, the first valve (211) and the sixth valve (254) are opened, the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the heater (23) and the first battery heat exchanger (21); within a second preset time period, the fourth valve (251), the second valve (221) and the seventh valve (255) are opened, the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the heater (23) and the second battery heat exchanger (22); In a first temperature-averaging mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) turns off heating, the first valve (211), the sixth valve (254), the second valve (221), the seventh valve (255) and the fourth valve (251) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time; In the second temperature-averaging mode, the first three-way valve (261) connects the heater (23) and the power element (24), the heater (23) turns off heating, and the first valve (211), the third valve (252), the second valve (221) and the seventh valve (255) The power element (24) drives the heat exchange medium to flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) in sequence; and In energy-saving mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) turns off heating, and the power component (24) drives the heat exchange medium to flow in the first battery heat exchanger (21) or the second battery heat exchanger (22).

24. The battery thermal management system according to any one of claims 1 to 21, characterized in that: The battery temperature control module (2) comprises a power component (24) for driving a heat exchange medium to circulate, a first battery heat exchanger (21) and a second battery heat exchanger (22) connected in parallel, a first parallel branch (41) where the first battery heat exchanger (21) is located is provided with a first valve (211), and a second parallel branch (42) where the second battery heat exchanger (22) is located is provided with a second valve (221), The first heat exchanger (11) is arranged on a main line located upstream of the diversion port (A) and can be selectively connected through a first three-way valve (261); the battery thermal management system comprises a first heater (231) and a second heater (232); the first heater (231) is arranged on the first parallel branch (41) through a second three-way valve (262); the second heater (232) is arranged on the second parallel branch (42) through a third three-way valve (263); The battery thermal management system further comprises a third parallel branch (25) connected in parallel between the first battery heat exchanger (21) and the second battery heat exchanger (22), wherein the third parallel branch (25) is provided with a third valve (252). A fourth valve (251) is provided on the pipeline connecting the first parallel branch (41) and the third parallel branch (25), and a fifth valve (253) is provided on the pipeline connecting the second parallel branch (42) and the third parallel branch (25). A sixth valve (254) is provided on the first parallel circuit (51) connecting the first valve (211) and the power member (24), and a seventh valve (255) is provided on the second parallel circuit (52) connecting the second valve (221) and the power member (24). The first parallel circuit (51) and the second parallel circuit (52) are arranged in parallel.

25. The battery thermal management system according to claim 24, characterized in that: The battery thermal management system has at least one of the following modes: In the first liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) is closed, the first valve (211) and the sixth valve (254) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21); In the second liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the second three-way valve (262) is closed, the third three-way valve (263) short-circuits the second heater (232), the fourth valve (251), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the second battery heat exchanger (22); In the third liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) short-circuits the second heater (232), the first valve (211), the sixth valve (254), the second valve (221), the seventh valve (255) and the fourth valve (251) are opened, and the remaining valves are closed, the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and then is divided into two paths, and flows through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time; In a fourth liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) short-circuits the second heater (232), the first valve (211), the third valve (252), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11), the first battery heat exchanger (21) and the second battery heat exchanger (22) in sequence; In a fifth liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24); within a first preset time period, the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) is closed, the first valve (211) and the sixth valve (254) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21); within a second preset time period, the second three-way valve (262) is closed, the third three-way valve (263) short-circuits the second heater (232), the fourth valve (251), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the second battery heat exchanger (22); In the first liquid heating mode, the first three-way valve (261) short-circuits the first heat exchanger (11), and the second three-way valve (262) indicates Towards the first heater (231), the third three-way valve (263) is closed, the first heater (231) is heated, the first valve (211) and the sixth valve (254) are opened, the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heater (231) and the first battery heat exchanger (21); In the second liquid heating mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) is closed, the third three-way valve (263) points to the second heater (232), the second heater (232) is heated, the fourth valve (251), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the heater (23) and the second battery heat exchanger (22); In the third liquid heating mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) points to the first heater (231), and the third three-way valve (263) points to the second heater (232). The first heater (231) and the second heater (232) are heated. The first valve (211), the sixth valve (254), the second valve (221), the seventh valve (255) and the fourth valve (251) are opened, and the remaining valves are closed. The power component (24) drives the heat exchange medium to flow into two paths, respectively flowing into the first heater (231) and the second heater (232) for heating, and at the same time flows through the first battery heat exchanger (21) and the second battery heat exchanger (22); In a fourth liquid heating mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) points to the first heater (231), the third three-way valve (263) points to the second heater (232), the first heater (231) and the second heater (232) are heated, the first valve (211), the third valve (252), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heater (231), the first battery heat exchanger (21), the second heater (232) and the second battery heat exchanger (22) in sequence; In a fifth liquid-heating mode, the first three-way valve (261) short-circuits the first heat exchanger (11); within a first preset time period, the second three-way valve (262) points to the first heater (231), the third three-way valve (263) is closed, the first heater (231) is heated, the first valve (211) and the sixth valve (254) are opened, the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first heater (231) and the first battery heat exchanger (21); within a second preset time period, the second three-way valve (262) is closed, the third three-way valve (263) points to the second heater (232), the second heater (232) is heated, the fourth valve (251), the second valve (221) and the seventh valve (255) are opened, the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the heater (23) and the second battery heat exchanger (22); In a first temperature-averaging mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) short-circuits the second heater (232), the first valve (211), the sixth valve (254), the second valve (221), the seventh valve (255) and the fourth valve (251) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) at the same time; in a second temperature-averaging mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) short-circuits the second heater (232), the first valve (211), the third valve (252), the second valve (221) and the seventh valve (255) are opened, and the remaining valves are closed, and the power component (24) drives the heat exchange medium to flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) in sequence; and In the energy-saving mode, the first three-way valve (261) short-circuits the first heat exchanger (11), the second three-way valve (262) short-circuits the first heater (231), the third three-way valve (263) short-circuits the second heater (232), and the power component (24) drives the heat exchange medium to flow in the first battery heat exchanger (21) or the second battery heat exchanger (22).

26. The battery thermal management system according to any one of claims 1 to 25, characterized in that: The heat exchange module (1) comprises a compressor (14), an environmental heat exchanger (13), an expansion valve (18), a first heat exchanger (11) and a second heat exchanger (12) which are connected in sequence, and a four-way reversing valve (15) is provided between the compressor (14) and the environmental heat exchanger (13).

27. The battery thermal management system according to claim 26, characterized in that: The first heat exchanger (11) and the second heat exchanger (12) are connected in parallel; a first electronic expansion valve (16) is provided on the pipeline provided with the first heat exchanger (11); and a second electronic expansion valve (17) is provided on the pipeline provided with the second heat exchanger (12).

28. The battery thermal management system according to claim 27, characterized in that: In the liquid heating mode, The first electronic expansion valve (16) is closed, and the battery temperature control module (2) and the heat exchange module (1) are independent of each other; The first electronic expansion valve (16) is opened, the first heat exchanger (11) is connected to the battery temperature control module (2), and part of the heat of the battery temperature control module (2) is used for the heat exchange module (1).

29. The battery thermal management system according to any one of claims 1 to 28, characterized in that: The battery thermal management system further comprises a temperature detection element (3) arranged upstream or downstream of the plurality of battery heat exchange parts (200) so as to control whether the plurality of battery heat exchange parts (200) are in operation according to information acquired by the temperature detection element (3).

30. An electrical equipment, characterized in that: A battery thermal management system comprising the battery thermal management system described in any one of claims 1-29.

Images