Battery thermal management system and electric equipment

Abstract

The invention relates to a battery thermal management system and electric equipment, the battery thermal management system comprises a heat exchange module, a battery temperature control module and a heater used as a heat source, the battery temperature control module comprises a plurality of battery heat exchange parts, and the heat exchange module is internally provided with a first heat exchanger used as a cold source; the first heat exchanger and the heater are selectively connected to the battery temperature control module, and the plurality of battery heat exchange parts are selectively connected to heat exchange medium circulation of the battery temperature control module. The plurality of battery heat exchange parts are mutually independent, each battery heat exchange part can be independently controlled, different heat exchange capacities are provided, the temperature of each part of the battery is adjusted, and the temperature difference of each part of the battery is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery thermal management, and particularly to a battery thermal management system and an electrical device. Background Art

[0002] In the thermal management systems of liquid cooling and liquid heating for new energy vehicle batteries, the temperature of the battery depends on the battery system heat exchanger. The heat exchange medium in the battery system heat exchanger can absorb the heat provided by the heater to heat the battery, or release heat to the refrigerant through the plate heat exchanger of the air conditioning system to cool the battery, so as to keep the battery at a certain temperature. In the related art, the structure of the battery system heat exchanger is relatively simple and can only achieve the cooling or heating of the whole battery. However, in fact, the cooling and heating loads required by different parts of the battery are not the same, resulting in a large temperature difference between different parts of the battery and affecting the performance of the battery. Summary of the Invention

[0003] 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.

[0004] To achieve the above purpose, the present disclosure provides a battery thermal management system, including a heat exchange module, a battery temperature control module, and a heater serving as a heat source. The battery temperature control module includes a plurality of battery heat exchange parts. The heat exchange module has 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 the heat exchange medium circulation of the battery temperature control module respectively.

[0005] Optionally, the plurality of 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. Multiple flow channels of the battery heat exchanger are divided into an independent first flow channel area and a second flow channel area. The first flow channel area forms the first battery heat exchange part, and the second flow channel area forms the second battery heat exchange part.

[0006] Optionally, the plurality of 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 first battery heat exchanger and a second battery heat exchanger. The first battery heat exchanger forms the first battery heat exchange part, and the second battery heat exchanger forms the second battery heat exchange part.

[0007] Optionally, the plurality of battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part. The first battery heat exchange part and the second battery heat exchange part are arranged in parallel.

[0008] Optionally, 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.

[0009] Optionally, the heater and the first heat exchanger are arranged on the main road upstream of the diversion port, and the first battery heat exchange part and the second battery heat exchange part share the heater and the first heat exchanger.

[0010] Optionally, 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.

[0011] Optionally, the first heat exchangers are respectively arranged on the parallel branches where the first battery heat exchange part and the second battery heat exchange part are located, and the first heat exchangers are connected in parallel to the corresponding parallel branches.

[0012] Optionally, the battery thermal management system further includes a third heater, and the third heater is arranged on the main road 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.

[0013] Optionally, 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 respectively arranged at different parts of the battery.

[0014] Optionally, the battery temperature control module includes a power component for driving the heat exchange medium to circulate, a first battery heat exchanger and a second battery heat exchanger connected in parallel. A first valve is arranged on the parallel branch where the first battery heat exchanger is located, and a second valve is arranged on the parallel branch where the second battery heat exchanger is located. The first heat exchanger and the heater are arranged on the main road upstream of the diversion port and are connected in parallel through a first three-way valve.

[0015] Optionally, the battery thermal management system has at least one of the following modes:

[0016] The first liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the first valve is opened, 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;

[0017] 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;

[0018] The third liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the first valve is opened, the second valve is opened, and the power component drives the heat exchange medium to flow through the first heat exchanger and then is divided into two paths to flow through the first battery heat exchanger and the second battery heat exchanger simultaneously;

[0019] The fourth liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component. Within a first preset time period, the first valve is opened, 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; within a second preset time period, 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;

[0020] The first liquid heating mode, the first three-way valve connects the heater and the power component, the heater heats up, the first valve is opened, 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;

[0021] The second liquid heating mode, the first three-way valve connects the heater and the power component, the 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 heater and the second battery heat exchanger;

[0022] The third liquid heating mode, the first three-way valve connects the heater and the power component, the heater heats up, the first valve is opened, the second valve is opened, and the power component drives the heat exchange medium to flow through the heater and then is divided into two paths to flow through the first battery heat exchanger and the second battery heat exchanger simultaneously;

[0023] The fourth liquid heating mode, the first three-way valve connects the heater and the power component, the heater heats up. Within a first preset time period, the first valve is opened, 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, 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;

[0024] The temperature equalization mode, the first three-way valve connects the heater and the power component, the heater stops 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

[0025] Energy-saving mode, the first three-way valve connects the heater and the power component, the heater shuts 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.

[0026] Optionally, the battery temperature control module includes a power component for driving the circulation of the heat exchange medium, a first battery heat exchanger and a second battery heat exchanger connected in parallel. A first valve is provided on the parallel branch where the first battery heat exchanger is located, and a second valve is provided on the parallel branch where the second battery heat exchanger is located. The first heat exchanger is arranged on the main path 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 a second three-way valve, and the second heater is arranged on the second parallel branch through a third three-way valve.

[0027] Optionally, the battery thermal management system has at least one of the following modes:

[0028] First liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the second three-way valve shorts the first heater, the third three-way valve is closed, the first valve is opened, 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;

[0029] 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 shorts 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;

[0030] Third liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component, the second three-way valve shorts the first heater, the third three-way valve shorts the second heater, the first valve is opened, the second valve is opened, and the power component drives the heat exchange medium to flow through the first heat exchanger and then is divided into two paths, flowing through the first battery heat exchanger and the second battery heat exchanger simultaneously;

[0031] Fourth liquid cooling mode. The first three-way valve connects the first heat exchanger and the power component. During the first preset time period, the second three-way valve shorts the first heater, the third three-way valve is closed, the first valve is opened, 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 the second preset time period, the second three-way valve is closed, the third three-way valve shorts 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.

[0032] First liquid heating mode. The first three-way valve shorts the first heat exchanger, the second three-way valve points to the first heater, the third three-way valve is closed, the first heater heats up, 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.

[0033] Second liquid heating mode. The first three-way valve shorts the first heat exchanger, the second three-way valve is closed, the third three-way valve points 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.

[0034] Third liquid heating mode. The first three-way valve shorts the first heat exchanger, the second three-way valve points to the first heater, the third three-way valve points to the second heater, the first heater and the second heater heat up, the first valve is opened, the second valve is opened, and the power component drives the heat exchange medium to be divided into two paths after flowing through the heaters and flow through the first battery heat exchanger and the second battery heat exchanger simultaneously.

[0035] Fourth liquid heating mode. The first three-way valve shorts the first heat exchanger. During the first preset time period, the second three-way valve points to the first heater, the third three-way valve is closed, the first heater heats up, 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. During the second preset time period, the first three-way valve shorts the first heat exchanger, the second three-way valve is closed, the third three-way valve points 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.

[0036] The uniform temperature mode, in which the first three-way valve shorts the first heat exchanger, the second three-way valve shorts the first heater, the third three-way valve shorts the second heater, 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

[0037] The energy-saving mode, in which the first three-way valve shorts the first heat exchanger, the second three-way valve shorts the first heater, the third three-way valve shorts the second heater, and the power component drives the heat exchange medium to flow in either the first battery heat exchanger or the second battery heat exchanger.

[0038] Optionally, the battery temperature control module includes a power component for driving the cyclic flow of the 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 and / or the heater is / are provided between the power component and the battery heat exchanger.

[0039] Optionally, the battery thermal management system includes a sixth valve connected between the first valve and the power component,

[0040] wherein 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 into the first battery heat exchanger after flowing through the first heat exchanger and / or the heater.

[0041] Optionally, the battery thermal management system includes a parallel circuit connected to the power component and the second valve. A seventh valve is provided on the parallel circuit, and a fourth valve is provided between the first parallel branch and the second battery heat exchanger;

[0042] wherein the battery thermal management system has a second mode in which the fourth valve, the second valve and the seventh valve are opened, and the power component drives the heat exchange medium to flow into the second battery heat exchanger after flowing through the first heat exchanger and / or the heater.

[0043] Optionally, 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 parallel circuit connected to the power component and the second valve, and a fourth valve is provided between the first parallel branch and the second battery heat exchanger;

[0044] Among them, the battery thermal management system has a third mode, in which 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 be divided into two paths after flowing through the first heat exchanger and / or the heater, and simultaneously flows through the first battery heat exchanger and the second battery heat exchanger.

[0045] Optionally, 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 parallel return path connecting the second valve and the power component.

[0046] Among them, the battery thermal management system has a fourth mode, in which 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 sequentially flow through the first heat exchanger and / or the heater, the first battery heat exchanger, and the second battery heat exchanger.

[0047] Optionally, the heater and / or the first heat exchanger are arranged on the main path upstream of the shunt port and are connected in parallel through a first three-way valve.

[0048] Optionally, 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 the first parallel branch through a second three-way valve, and the second heater and / or the first heat exchanger are arranged on the second parallel branch through a third three-way valve.

[0049] Optionally, 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 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 and the heater are arranged on the main path upstream of the shunt port and are connected in parallel through a first three-way valve.

[0050] 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.

[0051] 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.

[0052] A sixth valve is provided on the first return path connecting the first valve and the power component, and a seventh valve is provided on the second return path connecting the second valve and the power component. The first return path and the second return path are arranged in parallel.

[0053] Optionally, the battery thermal management system has at least one of the following modes:

[0054] The first liquid cooling mode, where the first three-way valve connects the first heat exchanger and the power component, 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;

[0055] The second liquid cooling mode, where the first three-way valve connects the first heat exchanger and the power component, 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;

[0056] The third liquid cooling mode, where the first three-way valve connects the first heat exchanger and the power component, 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 first heat exchanger and then divides into two paths to flow through the first battery heat exchanger and the second battery heat exchanger simultaneously;

[0057] The fourth liquid cooling mode, where the first three-way valve connects the first heat exchanger and the power component, 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 first heat exchanger, the first battery heat exchanger, and the second battery heat exchanger in sequence;

[0058] The fifth liquid cooling mode, where the first three-way valve connects the first heat exchanger and the power component. During the 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 the second preset time period, 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] The first liquid heating mode, where the first three-way valve connects the heater and the power component, the heater is heating, 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 heater and the first battery heat exchanger;

[0060] The second liquid heating mode, where the first three-way valve connects the heater and the power component, the heater is heating, 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;

[0061] Third liquid heating mode: The first three-way valve connects the heater and the power component. The heater is heating. The first valve, the sixth valve, the second valve, the seventh valve, and the fourth valve are open, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the heater and then divides into two paths to flow through the first battery heat exchanger and the second battery heat exchanger simultaneously;

[0062] Fourth liquid heating mode: The first three-way valve connects the heater and the power component. The heater is heating. The first valve, the third valve, the second valve, and the fifth valve are open, 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;

[0063] Fifth liquid heating mode: The first three-way valve connects the heater and the power component. The heater is heating. Within the first preset time period, the first valve and the sixth valve are open, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the heater and the first battery heat exchanger; within the second preset time period, the second valve and the seventh valve are open, 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;

[0064] First temperature equalization mode: The first three-way valve connects the heater and the power component. The heater stops heating. The first valve, the sixth valve, the second valve, the seventh valve, and the fourth valve are open, and the remaining valves are closed. The power component drives the heat exchange medium to flow through the first battery heat exchanger and the second battery heat exchanger simultaneously;

[0065] Second temperature equalization mode: The first three-way valve connects the heater and the power component. The heater stops heating. The first valve, the third valve, the second valve, and the fifth valve are open, and the remaining valves are closed. 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

[0066] Energy-saving mode: The first three-way valve connects the heater and the power component. The heater stops heating. The power component drives the heat exchange medium to flow in the first battery heat exchanger or the second battery heat exchanger.

[0067] Optionally, the battery temperature control module includes a power component for driving the heat exchange medium to circulate, 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,

[0068] 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.

[0069] 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.

[0070] 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.

[0071] A sixth valve is provided on a first return line connecting the first valve and the power component, and a seventh valve is provided on a second return line connecting the second valve and the power component. The first return line and the second return line are arranged in parallel.

[0072] Optionally, the battery thermal management system has at least one of the following modes:

[0073] 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 rest of the valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the first battery heat exchanger.

[0074] 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 second valve and the seventh valve are opened, and the rest of the valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and the second battery heat exchanger.

[0075] 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, the third three-way valve short-circuits the second heater, the first valve, the sixth valve, the second valve, the seventh valve and the fourth valve are opened, and the rest of the valves are closed. The power component drives the heat exchange medium to flow through the first heat exchanger and then is divided into two paths, flowing through the first battery heat exchanger and the second battery heat exchanger simultaneously.

[0076] 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, the third three-way valve short-circuits the second heater, 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 first heat exchanger, the first battery heat exchanger and the second battery heat exchanger in sequence;

[0077] Fifth liquid cooling mode, the first three-way valve connects the first heat exchanger and the power component. Within the 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; within the second preset time period, the second three-way valve is closed, the third three-way valve short-circuits the second heater, 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] First liquid heating mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve points to the first heater, the third three-way valve is closed, the first heater heats, 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;

[0079] 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 points to the second heater, the second heater heats, 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;

[0080] Third liquid heating mode, the first three-way valve short-circuits the first heat exchanger, the second three-way valve points to the first heater, the third three-way valve points to the second heater, the first heater and the second heater heat, 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 be divided into two paths and flow into the first heater and the second heater respectively for heating, and at the same time flow through the first battery heat exchanger and the second battery heat exchanger;

[0081] Fourth liquid heating mode, the first three-way valve shorts the first heat exchanger, the second three-way valve points to the first heater, the third three-way valve points to the second heater, the first heater and the second heater are heating, the first valve, the third valve, the second valve and the fifth valve are open, and the rest of the 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;

[0082] Fifth liquid heating mode, the first three-way valve shorts the first heat exchanger. Within the 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 heating, the first valve and the sixth valve are open, and the rest of the valves are closed. The power component drives the heat exchange medium to flow through the first heater and the first battery heat exchanger; within the 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 heating, the second valve and the seventh valve are open, and the rest of the valves are closed. The power component drives the heat exchange medium to flow through the heater and the second battery heat exchanger;

[0083] First temperature equalization mode, the first three-way valve shorts the first heat exchanger, the second three-way valve shorts the first heater, the third three-way valve shorts the second heater, the first valve, the sixth valve, the second valve, the seventh valve and the fourth valve are open, and the rest of the valves are closed. The power component drives the heat exchange medium to flow through the first battery heat exchanger and the second battery heat exchanger simultaneously;

[0084] Second temperature equalization mode, the first three-way valve shorts the first heat exchanger, the second three-way valve shorts the first heater, the third three-way valve shorts the second heater, the first valve, the third valve, the second valve and the fifth valve are open, and the rest of the valves are closed. 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

[0085] Energy-saving mode, the first three-way valve shorts the first heat exchanger, the second three-way valve shorts the first heater, the third three-way valve shorts the second heater, and the power component drives the heat exchange medium to flow in the first battery heat exchanger or the second battery heat exchanger.

[0086] Optionally, the heat exchange module includes a compressor, an environment 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 environment heat exchanger.

[0087] Optionally, the first heat exchanger and the second heat exchanger are connected in parallel. A first electronic expansion valve is provided on the pipeline where the first heat exchanger is located, and a second electronic expansion valve is provided on the pipeline where the second heat exchanger is located.

[0088] Optionally, in the liquid heat mode,

[0089] the first electronic expansion valve is closed, and the battery temperature control module and the heat exchange module are independent of each other;

[0090] the first electronic expansion valve is opened, the first heat exchanger is connected into the battery temperature control module, and part of the heat of the battery temperature control module is used for the heat exchange module.

[0091] Optionally, the battery thermal management system further includes a temperature detection element provided upstream or downstream of the plurality of battery heat exchange parts, so as to control whether the plurality of battery heat exchange parts work according to the information obtained by the temperature detection element.

[0092] According to a second aspect of the present disclosure, there is also provided an electrical device including the above battery thermal management system.

[0093] In the battery thermal management system provided by the present disclosure, the plurality of battery heat exchange parts respectively correspond to different parts of the battery, and the plurality of battery heat exchange parts are independent of each other. The flow rate and flow time of the heat exchange medium in each battery heat exchange part can be controlled separately. By controlling the flow of the heat exchange medium in different battery heat exchange parts, the temperature of each part of the battery can be adjusted to achieve the temperature equalization effect. The first heat exchanger and the heater can be selectively connected into the battery temperature control module as a cold source and a heat source respectively. The heat exchange medium (at this time, the temperature of the heat exchange medium is relatively low) after heat dissipation by the first heat exchanger can selectively flow into at least one of the plurality of battery heat exchange parts to absorb the heat of the battery to cool the battery; the heat exchange medium (at this time, the temperature of the heat exchange medium is relatively high) after being heated by the heater can selectively flow into at least one of the plurality of battery heat exchange parts to release heat to heat the battery, heating or cooling the heat exchange medium in the battery heat exchange part, so that the heating and cooling processes of the battery can be flexibly adjusted and precisely controlled, reducing the temperature difference between different parts of the battery. At the same time, the flow path 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, further reducing the battery temperature difference and improving the overall performance of the battery.

[0094] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0095] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0096] Figure 1 It is a schematic diagram of the battery thermal management system provided by related embodiments of the present disclosure;

[0097] Figure 1a It is a schematic diagram of the battery thermal management system provided by related embodiments of the present disclosure (liquid cooling mode);

[0098] Figure 1b It is a schematic diagram of the battery thermal management system provided by related embodiments of the present disclosure (liquid heat mode);

[0099] Figure 2 It is a schematic diagram of the battery thermal management system provided by the first exemplary embodiment of the present disclosure;

[0100] Figures 2a to 2h It is a schematic diagram of the battery thermal management system provided by the first exemplary embodiment of the present disclosure under different working modes;

[0101] Figure 3 It is a schematic diagram of the battery thermal management system provided by the second exemplary embodiment of the present disclosure;

[0102] Figures 3a to 3g It is a schematic diagram of the battery thermal management system provided by the second exemplary embodiment of the present disclosure under different working modes;

[0103] Figure 4 It is a schematic diagram of the battery thermal management system provided by the third exemplary embodiment of the present disclosure;

[0104] Figures 4a to 4j It is a schematic diagram of the battery thermal management system provided by the third exemplary embodiment of the present disclosure under different working modes;

[0105] Figure 5 It is a schematic diagram of the battery thermal management system provided by the fourth exemplary embodiment of the present disclosure;

[0106] Figures 5a to 5j It is a schematic diagram of the battery thermal management system provided by the fourth exemplary embodiment of the present disclosure under different working modes;

[0107] Figure 6 It is a schematic diagram of the battery thermal management system provided by the fifth exemplary embodiment of the present disclosure;

[0108] Figure 7 It is a schematic diagram of the battery heat exchanger in the battery thermal management system provided by an exemplary embodiment of the present disclosure.

[0109] Description of reference numerals

[0110] 1 - Heat exchange module; 10 - Battery system heat exchanger; 11 - First heat exchanger; 12 - Second heat exchanger; 13 - Environment heat exchanger; 14 - Compressor; 15 - Commutating valve; 16 - First electronic expansion valve; 17 - Second electronic expansion valve; 18 - Expansion valve; 2 - Battery temperature control module; 20 - Battery system heat exchanger; 201 - First flow channel area; 202 - Second flow channel area; 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; 24 - Power component; 25 - First 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. Detailed implementation manners

[0111] The following detailed description of the specific implementation manners of the present disclosure is provided in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustration and explanation of the present disclosure, and are not intended to limit the present disclosure.

[0112] In the present disclosure, unless otherwise stated, the orientation terms such as "upper" and "lower" generally refer to the drawing directions of the corresponding drawings, and "upstream" and "downstream" refer to the flow direction of the heat exchange medium. The terms "first", "second", etc. are used to distinguish different components, and do not have a sequential or important meaning. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements.

[0113] In the related embodiments of the present disclosure, to achieve heating and cooling of the battery system, as Figure 1 shown, the new energy vehicle battery thermal management system includes a compressor 14, a commutating 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 environment heat exchanger 13, a water pump, a battery system heat exchanger 10, a heater, and a three-way valve.

[0114] As Figure 1aAs shown in the figure, by adjusting the reversing valve 15, the automotive air conditioning system is adjusted to the refrigeration mode, and the refrigerant cycle is as follows: The gaseous low-pressure refrigerant is converted into gaseous high-pressure refrigerant by the compressor 14, and then releases heat through the ambient heat exchanger 13 and is converted into liquid high-pressure refrigerant. The liquid high-pressure refrigerant is converted into liquid low-pressure refrigerant through the expansion valve 18 and then divided into two parallel paths, which respectively pass through the passenger compartment air conditioning system heat exchanger and the plate heat exchanger to absorb heat and be converted into gaseous low-pressure refrigerant. The flow rates of the two paths of refrigerant are jointly controlled by the first electronic expansion valve 16 and the second electronic expansion valve 17. Then the two paths of gaseous low-pressure refrigerant are combined and return to the compressor 14 through the reversing valve 15. In the liquid cooling mode, the heat exchange medium cycle is as follows: The heat exchange medium circulates in the cooling loop composed of the water pump, the plate heat exchanger, and the battery system heat exchanger under the driving action of the water pump. The heat exchange medium releases heat through the plate heat exchanger to reach a certain temperature. At this time, the liquid low-pressure refrigerant flows in the plate heat exchanger, and then can absorb the heat of the battery when passing through the battery system heat exchanger, completing the cooling of the battery system.

[0115] As Figure 1b shown, the first electronic expansion valve 16 is closed, and the air conditioning system and the liquid heat system are independent of each other and do not interfere with each other. In the liquid heat mode, the heat exchange medium cycle is as follows: The heat exchange medium circulates in the heating loop composed of the water pump, the heater, and the battery system heat exchanger under the driving action of the water pump. The heat exchange medium absorbs heat through the heater to reach a certain temperature, and then releases heat when passing through the battery system heat exchanger, completing the heating of the battery system.

[0116] For the air conditioning system, by changing the reversing valve 15, the air conditioning system is adjusted to the heating mode. The gaseous low-pressure refrigerant is converted into gaseous high-pressure refrigerant by the compressor 14, and first releases heat through the passenger compartment air conditioning system heat exchanger (equivalent to a condenser) and is converted into liquid high-pressure refrigerant, completing the heating of the passenger compartment. The liquid high-pressure refrigerant is converted into liquid low-pressure refrigerant through the second electronic expansion valve 17 and the expansion valve 18, and then absorbs heat through the ambient heat exchanger (equivalent to an evaporator) and is converted into gaseous low-pressure refrigerant, and returns to the compressor 14 through the reversing valve 15.

[0117] In the above embodiments, it is impossible to heat or cool each part of the battery according to different environments and different working conditions, and it is impossible to meet the heat and cold load requirements of different battery parts, resulting in a large temperature difference between different parts of the battery. And the flow path of the battery system heat exchanger is long and the flow resistance is large, resulting in a large pressure drop and temperature drop at the inlet and outlet positions of the heat exchange medium, which is not conducive to controlling the temperature difference of the battery and affects the overall performance of the battery.

[0118] To solve the above problems, as Figures 2 to 6As shown in the figure, the present disclosure provides a battery thermal management system. The battery thermal management system includes a heat exchange module 1 and a battery temperature control module 2 (shown within the dashed box). The heat exchange module 1 has a first heat exchanger 11 serving as a cold source. The first heat exchanger 11 and a heater 23 serving 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 but 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, and the multiple battery heat exchange parts can be selectively connected to the heat exchange medium circulation of the battery temperature control module 2.

[0119] In the battery thermal management system provided by the present disclosure, the multiple battery heat exchange parts respectively correspond to different parts of the battery. The multiple battery heat exchange parts are independent of each other, and the flow rate and flow time of the heat exchange medium in each battery heat exchange part can be controlled separately. By controlling the flow conditions of the heat exchange medium in different battery heat exchange parts, the temperatures of different parts of the battery can be adjusted to achieve a temperature equalization effect. 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 (at this time, the temperature of the heat exchange medium is relatively low) after dissipating heat through the first heat exchanger 11 can selectively flow into at least one of the multiple battery heat exchange parts to absorb the heat of the battery to cool the battery; the heat exchange medium (at this time, the temperature of the heat exchange medium is relatively high) after being heated by the heater 23 can selectively flow into at least one of the multiple battery heat exchange parts to release heat to heat the battery. The multiple battery heat exchange parts can cool or heat the battery simultaneously, separately, or alternately, so that the heating and cooling processes of the battery can be flexibly adjusted and precisely controlled, reducing the temperature difference between different parts of the battery. At the same time, the flow path 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, further reducing the battery temperature difference and improving the overall performance of the battery.

[0120] There can be various ways to arrange the multiple battery heat exchange parts. In the following, an example of arranging two battery heat exchange parts will be introduced in detail. Of course, the number of battery heat exchange parts can also be increased according to needs. The present disclosure includes an embodiment in which multiple flow paths on a battery heat exchanger are divided into two independent flow path areas, and also includes an embodiment in which two independent battery heat exchangers are provided.

[0121] In an exemplary embodiment of the present disclosure, as Figure 6As shown, the battery temperature control module 2 includes a battery heat exchanger, and the multiple flow channels of the battery heat exchanger are divided into a first flow channel area 201 and a second flow channel area 202 that are independent of each other. The first flow channel area 201 forms a first battery heat exchange part, and the second flow channel area 202 forms a second battery heat exchange part. The first flow channel area 201 and the second flow channel area 202 are respectively provided with corresponding heat exchange medium inlets and outlets. The first flow channel area 201 has a first inlet 2011 and a first outlet 2012, and the second flow channel area 202 has a second inlet 2021 and a second outlet 2022. The inlet and the outlet are arranged 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 to the inlet and the outlet. In this way, the heat exchange medium flowing in from the inlet flows through the flow channel, and flows out from the outlet after converging on the side opposite to the inlet and the outlet to form a ring flow path. The flow rates of the first flow channel area 201 and the second flow channel area 202 can be different and can be controlled separately.

[0122] 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, wherein the first battery heat exchanger 21 is formed as a first battery heat exchange unit, and the second battery heat exchanger 22 is formed as a second battery heat exchange unit. The two battery heat exchangers are independent of each other and can be controlled separately, and 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.

[0123] In this disclosure, Figure 2 and Figure 3 In the embodiment shown, the first battery heat exchanger 21 and the second battery heat exchanger 22 are connected in parallel, and can be turned on separately (only one of them is used), or turned on at the same time (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). Figure 4 and Figure 5 In the embodiment shown, 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 parallel embodiment, 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.

[0124] In this disclosure, Figure 2 and Figure 4In the illustrated embodiment, there is one heater 23 (arranged on the main path), 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 (only connected in the liquid heating mode, and short-circuited in the liquid cooling mode). In Figure 3 and Figure 5 In the illustrated embodiment, the battery thermal management system includes a first heater 231 and a second heater 232 (arranged on the branch paths). 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. In the form of double heaters, heaters are respectively arranged for the first battery heat exchanger 21 and the second battery heat exchanger 22, and the number of heaters can be designed according to the number of battery heat exchangers.

[0125] In Figure 6 In Embodiment 5 shown, the battery thermal management system includes a first heater 231 and a second heater 232 arranged on the branch paths, and also includes a third heater 233 arranged on the main path. The third heater 233 can be in parallel or in series (in the series embodiment, in the liquid cooling mode, the third heater 233 only allows fluid to pass through without heating). By arranging heaters on the main path and the branch paths respectively, 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 Embodiment 5, the heaters on the main path and the branch paths can be connected simultaneously or separately. Taking the simultaneous connection of the third heater 233 on the main path and the first heater 231 on the branch paths as an example, the valve arrangement and opening / closing control method are similar to those when connected separately. The arrangement method of the pipeline and valves in Embodiment 1 can be adopted, or the arrangement method of the pipeline and valves in Embodiment 3 can be adopted, both of which fall within the protection scope of the present disclosure.

[0126] In the present disclosure, the battery assembly may have a first temperature zone and a second temperature zone. The first battery heat exchange part exchanges heat corresponding to the first temperature zone, and the second battery heat exchange part exchanges heat corresponding to the second temperature zone. This embodiment realizes the heat exchange of different regions of the battery assembly through the first battery heat exchange part and the second battery heat exchange part to improve the temperature uniformity of the battery assembly and the flexibility and convenience of battery temperature regulation. Of course, the number of battery heat exchange parts can be designed according to the number and position of the temperature zones on the battery assembly, not limited to two.

[0127] Four embodiments will be introduced in detail below with reference to the accompanying drawings.

[0128] Example 1 (The first battery heat exchanger 21 and the second battery heat exchanger 22 are in parallel and share a heater 23)

[0129] As Figure 2As shown, 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 path upstream of the diversion port A (in terms of the flow direction of the heat exchange medium that is dissipated by the first heat exchanger 11 and then flows into multiple battery heat exchange parts and returns to the first heat exchanger 11 through the power component 24) and are connected in parallel through a first three-way valve 261. By controlling the first valve 211, it is controlled whether the first battery heat exchanger 21 is turned on. By controlling the second valve 221, it is controlled whether the second battery heat exchanger 22 is turned on. The two can be controlled separately and independently. The first valve 211, the second valve 221, and multiple valves to be introduced below can all be electric valves.

[0130] In this embodiment, the heater 23 is connected in parallel with the first heat exchanger 11 through the first three-way valve 261. By controlling the first three-way valve 261, it can be switched between the liquid cooling and liquid heating modes. By controlling the first three-way valve 261, when the first heat exchanger 11 and the power component 24 are connected, the first circulation loop is carried out, which is the cooling loop to cool the battery. When the heater 23 and the power component 24 are connected, the second circulation loop is carried out to heat the battery.

[0131] In Embodiment 1, the liquid cooling mode of this battery thermal management system is one of the following working modes:

[0132] The first liquid cooling mode, as Figure 2a shown, 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;

[0133] The second liquid cooling mode, as Figure 2b shown, 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;

[0134] The third liquid cooling mode, as Figure 2c shown, 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 simultaneously;

[0135] 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 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 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, the second liquid cooling mode is executed within the second preset time period, and the first liquid cooling mode and the second liquid cooling mode are executed alternately.

[0136] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected according to needs to cool the battery separately, simultaneously, or alternately.

[0137] Correspondingly, in this embodiment, the liquid heat mode of the battery thermal management system is one of the following working modes:

[0138] First liquid heat mode, as Figure 2d shown, 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 opened, and the second valve 221 is closed. The power component 24 drives the heat exchange medium to flow through the heater 23 and the first battery heat exchanger 21.

[0139] Second liquid heat mode, as Figure 2e shown, 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.

[0140] Third liquid heat mode, as Figure 2f shown, 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 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 divides into two paths to flow through the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously.

[0141] Fourth liquid heat mode: 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 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 first 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 heat mode is executed within the first preset time period, the second liquid heat mode is executed within the second preset time period, and the first liquid heat mode and the second liquid heat mode are executed alternately.

[0142] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected according to needs to heat the battery separately, simultaneously or alternately.

[0143] In this embodiment, the battery thermal management system also has one of the following working modes:

[0144] Equal temperature mode, as Figure 2g shown, 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; in this mode, neither the first heat exchanger 11 nor the heater 23 is connected to the battery temperature control module 2, and the heat exchange medium circulates between multiple battery heat exchange parts to play an equal temperature role.

[0145] Energy-saving mode, according to the temperature of the heat exchange medium in the first battery heat exchanger 21 and the second battery heat exchanger 22, control the opening and closing of the first valve 211 and the second valve 221. When the temperature of the heat exchange medium is greater than the preset threshold, open the corresponding valve. 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. Taking the fast charging process of a blade battery as an example, the temperatures on both sides rise, and the temperature in the middle area rises slowly. At this time, the temperature of the heat exchange medium in the battery heat exchange part corresponding to the middle area (for example, the first battery heat exchanger 21) is lower than the preset threshold, the first valve 211 closes, 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, the heat exchange medium inside it circulates, which can reduce the power requirement of the power component 24, reduce energy consumption, and play an energy-saving role.

[0146] Example 2 (The first battery heat exchanger 21 and the second battery heat exchanger 22 are in parallel and each is provided with a heater)

[0147] On the basis of Embodiment 1, in Embodiment 2, heaters are separately arranged for the two battery heat exchangers, as Figure 3As shown in the figure, the battery thermal management system includes a first heater 231 and a second heater 232. The first heater 231 is connected in parallel with the pipeline provided with the first battery heat exchanger 21 through a second three-way valve 262, and the second heater 232 is connected in parallel with the pipeline of the second battery heat exchanger 22 through a third three-way valve 263. The first heater 231 is arranged between the shunt inlet of the parallel branch where the first battery heat exchanger 21 is located 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 the liquid cooling mode. When the upper interface and the side interface of the second three-way valve 262 are connected, the first heater 231 is connected, which is the liquid heating mode. The second heater 232 is arranged between the shunt inlet of the parallel branch where the second battery heat exchanger 22 is located and the second battery heat exchanger 22, and its connection and short-circuit modes are similar to those of the first heater 231.

[0148] In Embodiment 2, the liquid cooling mode of the battery thermal management system is one of the following working modes:

[0149] The first liquid cooling mode, as Figure 3a shown, 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;

[0150] The second liquid cooling mode, as Figure 3b shown, 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;

[0151] The third liquid cooling mode, as Figure 3c shown, 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 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 simultaneously;

[0152] 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 shorts the first heater 231. The third three-way valve 263 is closed. The first valve 211 is opened within the first preset time period. The second three-way valve 262 is closed. The third three-way valve 263 shorts the second heater 232. 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 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 alternately executed.

[0153] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected according to needs to cool the battery separately, simultaneously or alternately.

[0154] Correspondingly, in this embodiment, the liquid heat mode of the battery thermal management system is one of the following working modes:

[0155] First liquid heat mode, as Figure 3d shown, the first three-way valve 261 points to the shunt inlet of the dual battery heat exchanger, shorts the first heat exchanger 11, the second three-way valve 262 points to the first heater 231, connects the first heater 231 and the power component 24, the third three-way valve 263 is closed, the first heater 231 heats up, 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 to heat the battery;

[0156] Second liquid heat mode, as Figure 3e shown, the first three-way valve 261 points to the shunt inlet of the dual battery heat exchanger, the third three-way valve 263 points to the second heater 232, connects the second heater 232 and the power component 24, the second heater 232 heats up, 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;

[0157] Third liquid heat mode, as Figure 3f shown, the first three-way valve 261 points to the shunt inlet of the dual battery heat exchanger, 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 valve 211 is opened, the second valve 221 is opened, and the power component 24 drives the heat exchange medium to be divided into two paths to 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;

[0158] Fourth liquid heat mode: The first three-way valve 261 points to the shunt inlet of the dual-battery heat exchanger. The second three-way valve 262 and the first valve 211 are opened synchronously within the first preset time period, and the third three-way valve 263 and the second valve 221 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 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. That is, the first liquid heat mode is executed within the first preset time period, the second liquid heat mode is executed within the second preset time period, and the first liquid heat mode and the second liquid heat mode are executed alternately.

[0159] 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 separately, simultaneously, or alternately.

[0160] In this embodiment, the battery thermal management system also has one of the following working modes:

[0161] Equal-temperature mode, as Figure 3g shown, the first three-way valve 261 shorts the first heat exchanger 11, the second three-way valve 262 shorts the first heater 231, the third three-way valve 263 shorts 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 the equal-temperature effect.

[0162] Energy-saving mode: According to the temperature of the heat exchange medium in the first battery heat exchanger 21 and the second battery heat exchanger 22, the opening and closing of the first valve 211 and the second valve 221 are controlled. When the temperature of the heat exchange medium is greater than the preset threshold, the corresponding valve is opened. The first three-way valve 261 shorts the first heat exchanger 11, the second three-way valve 262 shorts the first heater 231, the third three-way valve 263 shorts 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. Only when the temperature of the heat exchange medium reaches the preset threshold, the heat exchange medium inside it circulates, which can reduce the power requirement of the power component 24, reduce energy consumption, and play an energy-saving role.

[0163] Example 3 (The first battery heat exchanger 21 and the second battery heat exchanger 22 share the same heater 23 and can be selectively parallel or series-connected)

[0164] In this embodiment, as Figure 4As shown, 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 shunt port and are connected in parallel through a first three-way valve 261. The battery thermal management system further 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 loop connecting the first valve 211 and the power component 24. A seventh valve 255 is provided on the second loop connecting the second valve 221 and the power component 24. The first loop and the second loop are arranged in parallel. The number and arrangement of the above valves are not limited to those shown in the figure, and valves can be added or reduced according to needs. And in some working modes, some valves can be used as standby valves.

[0165] Through the arrangement of the above pipelines and valves, when the first valve 211 and the sixth valve 254 are opened and other valves are closed, the first battery heat exchanger 21 is turned on; when the fourth valve 251, the second valve 221, and the seventh valve 255 are opened and other valves are closed, the second battery heat exchanger 22 is turned on; when the first valve 211, the sixth valve 254, the fourth valve 251, the second valve 221, and the seventh valve 255 are opened and other valves are closed, the first battery heat exchanger 21 and the second battery heat exchanger 22 are turned on simultaneously and are connected in parallel; when the first valve 211, the third valve 252, the second valve 221, and the seventh valve 255 are opened and other valves are closed, the first battery heat exchanger 21 and the second battery heat exchanger 22 are turned on simultaneously and are connected in series, which can be selected according to needs. Any pipeline connection method that can realize the selective parallel or series connection of the first battery heat exchanger 21 and the second battery heat exchanger 22 belongs to the protection scope of the present disclosure.

[0166] In Embodiment 3, the liquid cooling mode of the battery thermal management system is one of the following working modes:

[0167] The first liquid cooling mode, as Figure 4a shown, 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 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;

[0168] The second liquid cooling mode, as Figure 4bAs shown, the first three-way valve 261 connects the first heat exchanger 11 and the power component 24. The second valve 221 and the seventh valve 255 are opened, and 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;

[0169] The third liquid cooling mode, as Figure 4c As shown, the first three-way valve 261 connects the first heat exchanger 11 and the power component 24. When the first valve 211, the sixth valve 254, the fourth valve 251, the second valve 221, and the seventh valve 255 are opened and other valves are closed, the power component 24 drives the heat exchange medium to flow through the first heat exchanger 11 and then divides into two paths and flows through the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously;

[0170] The fourth liquid cooling mode, as Figure 4d As shown, 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 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;

[0171] 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 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, the second liquid cooling mode is executed within the second preset time period, and the first liquid cooling mode and the second liquid cooling mode are executed alternately.

[0172] It is possible to select to cool the battery by the first battery heat exchanger 21 and the second battery heat exchanger 22 separately, simultaneously, or alternately according to needs.

[0173] Correspondingly, in this embodiment, the liquid heat mode of the battery thermal management system is one of the following working modes:

[0174] The first liquid heat mode, as Figure 4e As shown, the first three-way valve 261 connects the heater 23 and the power component 24. The heater 23 heats up. The first valve 211 and the sixth valve 254 are opened, and 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;

[0175] The second liquid heat mode, as Figure 4fAs shown, the first three-way valve 261 connects the heater 23 and the power component 24. The heater 23 is heating, the second valve 221 and the seventh valve 255 are open, and 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;

[0176] The third liquid heat mode, as Figure 4g As shown, the first three-way valve 261 connects the heater 23 and the power component 24. The heater 23 is heating, the first valve 211, the sixth valve 254, the fourth valve 251, the second valve 221 and the seventh valve 255 are open, and other valves are closed. The power component 24 drives the heat exchange medium to be divided into two paths after flowing through the heater 23 and flow through the first battery heat exchanger 21 and the second battery heat exchanger 22 simultaneously;

[0177] The fourth liquid heat mode, as Figure 4h As shown, the first three-way valve 261 connects the heater 23 and the power component 24. The heater 23 is heating, the first valve 211, the third valve 252, the second valve 221 and the seventh valve 255 are open, and 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;

[0178] In the fifth liquid heat 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 within the first preset time period, and 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 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 heat mode is executed within the first preset time period, the second liquid heat mode is executed within the second preset time period, and the first liquid heat mode and the second liquid heat mode are executed alternately;

[0179] It is possible to select to heat the battery by the first battery heat exchanger 21 and the second battery heat exchanger 22 separately, simultaneously or alternately according to needs.

[0180] In this embodiment, the battery thermal management system further has at least one of the following working modes:

[0181] In the first temperature equalization mode, the first three-way valve 261 connects the heater 23 and the power component 24. The heater 23 stops heating. The first valve 211, the sixth valve 254, the second valve 221, the seventh valve 255 and the fourth valve 251 are open, 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.

[0182] Second 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, the third valve 252, the second valve 221, and the fifth 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.

[0183] Energy-saving mode: According to the temperatures of the heat exchange medium in the first battery heat exchanger 21 and the second battery heat exchanger 22, the opening and closing of the first valve 211 and the second valve 221 are controlled. When the temperature of the heat exchange medium is greater than the preset threshold, the corresponding valve is opened. The first three-way valve 261 connects the heater 23 and the power component 24. The heater 23 turns off heating. 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. The beneficial effects in the temperature equalization mode and the energy-saving mode in this embodiment are similar to those in Embodiment 1 and Embodiment 2, and will not be repeated here.

[0184] Example 4 (The first battery heat exchanger 21 and the second battery heat exchanger 22 are each provided with a heater and can be selectively parallel or series-connected)

[0185] In this embodiment, as Figure 5 shown, the arrangement of the two heaters is similar to that in Embodiment 2, and the selectively parallel or series arrangement of the two battery heat exchangers is similar to that in Embodiment 3, and will not be repeated. In this battery thermal management system, the battery temperature control module 2 includes the first battery heat exchanger 21 and the second battery heat exchanger 22 connected in parallel. The first parallel branch where the first battery heat exchanger 21 is located is provided with the first valve 211, and the second parallel branch where the second battery heat exchanger 22 is located is provided with the second valve 221. The first heat exchanger 11 is arranged on the main road upstream of the shunt port and can be selectively connected through the first three-way valve 261. The battery thermal management system includes the first heater 231 and the second heater 232. The first heater 231 is arranged on the first parallel branch through the second three-way valve 262, and the second heater 232 is arranged on the second parallel branch through the third three-way valve 263. The battery thermal management system further includes a third parallel branch 25 connected in parallel between the first battery heat exchanger 21 and the second battery heat exchanger 22. The third parallel branch 25 is provided with the third valve 252. The pipeline connecting the first parallel branch and the third parallel branch 25 is provided with the fourth valve 251. The pipeline connecting the second parallel branch and the third parallel branch 25 is provided with the fifth valve 253. The first loop connecting the first valve 211 and the power component 24 is provided with the sixth valve 254. The second loop connecting the second valve 221 and the power component 24 is provided with the seventh valve 255. The first loop and the second loop are arranged in parallel.

[0186] In Embodiment 4, the liquid cooling mode of this battery thermal management system is one of the following working modes:

[0187] The first liquid cooling mode, as Figure 5a shown, the first three-way valve 261 connects the first heat exchanger 11 and the power component 24, the second three-way valve 262 shorts the first heater 231, the third three-way valve 263 is closed, the first valve 211 and the sixth valve 254 are opened, other 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;

[0188] The second liquid cooling mode, as Figure 5b shown, 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 shorts the second heater 232, the second valve 221 and the seventh valve 255 are opened, other 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;

[0189] The third liquid cooling mode, as Figure 5c shown, the first three-way valve 261 connects the first heat exchanger 11 and the power component 24, the second three-way valve 262 shorts the first heater 231, the third three-way valve 263 shorts the second heater 232, when the first valve 211, the sixth valve 254, the fourth valve 251, the second valve 221 and the seventh valve 255 are opened and other 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 simultaneously;

[0190] The fourth liquid cooling mode, as Figure 5d shown, the first three-way valve 261 connects the first heat exchanger 11 and the power component 24, the second three-way valve 262 shorts the first heater 231, the third three-way valve 263 shorts the second heater 232, the first valve 211, the third valve 252, the second valve 221 and the seventh valve 255 are opened, other valves are closed, and 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;

[0191] 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 shorts the first heater 231, the first valve 211 and the sixth valve 254 are opened within the first preset time period, the third three-way valve 263 shorts the second heater 232, the second valve 221 and the seventh valve 255 are 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 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. The first liquid cooling mode is executed within the first preset time period, the second liquid cooling mode is executed within the second preset time period, and the first liquid cooling mode and the second liquid cooling mode are executed alternately.

[0192] The first battery heat exchanger 21 and the second battery heat exchanger 22 can be selected as needed to cool the battery individually, simultaneously, or alternately.

[0193] Correspondingly, in this embodiment, the liquid heat mode of the battery thermal management system is one of the following working modes:

[0194] The first liquid heat mode, as Figure 5e shown, the first three-way valve 261 points to the shunt 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 first valve 211 and the sixth valve 254 are opened, other 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 to heat the battery;

[0195] The second liquid heat mode, as Figure 5f shown, the first three-way valve 261 points to the shunt inlet of the dual battery heat exchanger, the third three-way valve 263 points to the second heater 232, connecting the second heater 232 and the power component 24, the second valve 221 and the seventh valve 255 are opened, other valves are closed, and the power component 24 drives the heat exchange medium to flow through the second heater 232 and the second battery heat exchanger 22;

[0196] The third liquid heat mode, as Figure 5g shown, the first three-way valve 261 points to the shunt inlet of the dual battery heat exchanger, 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 valve 211, the sixth valve 254, the fourth valve 251, the second valve 221, and the seventh valve 255 are opened, other valves are closed, and the power component 24 drives the heat exchange medium to be divided into two paths to 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;

[0197] The fourth liquid heat mode, as Figure 5h shown, the first three-way valve 261 connects the heater 23 and the power component 24, 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 valve 211, the third valve 252, the second valve 221, and the seventh valve 255 are opened, other valves are closed, and 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;

[0198] Fifth liquid heat mode, the first three-way valve 261 points to the shunt 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 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.

[0199] 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 according to needs to heat the battery separately, simultaneously or alternately.

[0200] In this embodiment, the battery thermal management system further has at least one of the following working modes:

[0201] First 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, the sixth valve 254, the second valve 221, the seventh valve 255 and the fourth valve 251 are opened, and the rest of the 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;

[0202] Second 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, the third valve 252, the second valve 221 and the fifth valve 255 are opened, and the rest of the 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

[0203] 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.

[0204] Such as Figure 2As shown in the figure, the battery thermal management system provided by the present disclosure further includes a temperature detection element 3 disposed upstream or downstream of a plurality of battery heat exchange parts, so as to control whether the plurality of battery heat exchange parts work according to the information obtained by the temperature detection element 3. The temperature detection element 3 can be a temperature sensor, which can monitor the temperature of the heat exchange medium at the inlet or outlet of the battery heat exchanger, so as to adjust the heating power of the heater, the opening or closing or opening degree of each valve, etc., adjust the flow rate and flow time of the heat exchange medium, and cooperate to control the first battery heat exchanger 21 and the second battery heat exchanger 22 to meet different heat exchange requirements of the battery.

[0205] The heat exchange module 1 can be any heat exchange structure capable of providing 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 to switch between the liquid cooling mode and the liquid heating mode by controlling the reversing valve 15. The gaseous high-pressure refrigerant compressed by the compressor 14 flows to one side of the ambient heat exchanger 13, which is the refrigeration mode. On the contrary, it flows to the side where the second heat exchanger 12 is located, which is the heating mode. For specific details, see the relevant description of Figure 1 , and no repeated limitation is made here.

[0206] In the present disclosure, 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 where the first heat exchanger 11 is provided, and a second electronic expansion valve 17 is provided on the pipeline where the second heat exchanger 12 is provided. In the liquid heating mode, the first electronic expansion valve 16 can be in a closed state, and the air conditioning system and the battery temperature control module 2 do not interfere with each other. As Figure 2h shown, the first electronic expansion valve 16 can also be in an open state. The first heat exchanger 11 is connected to the battery temperature control module 2 (it can be directly connected in series or connected in parallel by a first three-way valve 261). Part of the heat of the battery temperature control module 2 is used for the heat exchange module 1 to realize the recovery and effective utilization of energy, especially applicable to the scenario where the ambient temperature is relatively low, for example, the air conditioning system cannot meet the heating requirement of the passenger compartment.

[0207] According to the second aspect of the present disclosure, an electrical device is further provided, including the battery thermal management system introduced above. This electrical device has all the beneficial effects of the above battery thermal management system, and no further elaboration is made here. This electrical device can be a vehicle, an energy storage cabinet, a drone, etc., and the present disclosure does not limit this.

[0208] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of 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 protection scope of the present disclosure.

[0209] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, without conflict, they can be combined in any suitable way. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0210] In addition, any combination can be made among various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A battery thermal management system, characterized in that, it includes a heat exchange module (1), a battery temperature control module (2), and a heater (23) serving as a heat source. The battery temperature control module (2) includes a plurality of battery heat exchange parts. The heat exchange module (1) has a first heat exchanger (11) serving as a cold source. The first heat exchanger (11) and the heater (23) can be selectively connected to the battery temperature control module (2), and the plurality of battery heat exchange parts can be selectively connected to the heat exchange medium circulation of the battery temperature control module (2) respectively.

2. The battery thermal management system according to claim 1, characterized in that, the plurality of battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part. The battery temperature control module (2) includes a battery heat exchanger. Multiple flow channels of the battery heat exchanger are divided into an independent first flow channel area (201) and a second flow channel area (202). The first flow channel area (201) is formed as the first battery heat exchange part, and the second flow channel area (202) is formed as the second battery heat exchange part.

3. The battery thermal management system according to claim 1, characterized in that, the plurality of battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part. 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, and the second battery heat exchanger (22) is formed as the second battery heat exchange part.

4. The battery thermal management system according to claim 1, characterized in that, the plurality of battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part. The first battery heat exchange part and the second battery heat exchange part are arranged in parallel.

5. The battery thermal management system according to claim 1, characterized in that, the plurality of battery heat exchange parts include a first battery heat exchange part and a second battery heat exchange part. The first battery heat exchange part and the second battery heat exchange part 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 the main road upstream of the shunt port (A). The first battery heat exchange part and the second battery heat exchange part 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 includes a first heater (231) and a second heater (232). The first heater (231) and the second heater (232) are respectively arranged on the corresponding parallel branches to respectively heat the heat exchange medium flowing into the first battery heat exchange part and the second battery heat exchange part.

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

9. The battery thermal management system according to claim 7, It is characterized in that the battery thermal management system further includes a third heater (233), the third heater (233) is arranged on the main road upstream of the shunt port (A), and the first heater (231), the second heater (232), and the third heater (233) can be selectively connected to the battery temperature control module (2) respectively.

10. The battery thermal management system according to any one of claims 1-5, It is characterized in that 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 respectively arranged at different parts of the battery.

11. The battery thermal management system according to claim 1, It is characterized in that the battery temperature control module (2) includes a power component (24) for driving the circulating flow of the heat exchange medium, a first battery heat exchanger (21) and a second battery heat exchanger (22) 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 shunt port (A) and are connected in parallel through a first three-way valve (261).

12. The battery thermal management system according to claim 11, It is characterized in that the battery thermal management system has at least one of the following modes: The 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); The 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); 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) is opened, the second valve (221) is opened, and the power component (24) drives the heat exchange medium to be divided into two paths after flowing through the first heat exchanger (11) and flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) simultaneously; Fourth liquid cooling mode, the first three-way valve (261) connects the first heat exchanger (11) and the power component (24). During the 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); during the 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); First liquid heating mode, 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 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); Second liquid heating mode, 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, 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); Third liquid heating mode, 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 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 divides into two paths to flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) simultaneously; Fourth liquid heating mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) heats up. During the 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); during the 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); Temperature equalization mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) stops 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); and Energy-saving mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) shuts 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 claim 1, characterized in that the battery temperature control module (2) includes a power component (24) for driving the circulation of the heat exchange medium, a first battery heat exchanger (21) and a second battery heat exchanger (22) 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) is arranged on the main path upstream of the shunt port (A) 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 arranged on the second parallel branch through 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: 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); 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); 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) 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) simultaneously; Fourth liquid cooling mode: The first three-way valve (261) connects the first heat exchanger (11) and the power component (24). During the first preset time period, the second three-way valve (262) shorts 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); During the second preset time period, the second three-way valve (262) is closed, the third three-way valve (263) shorts 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). First liquid heating mode: The first three-way valve (261) shorts 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) heats up, 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). Second liquid heating mode: The first three-way valve (261) shorts 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) heats up, 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). Third liquid heating mode: The first three-way valve (261) shorts 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) heat up, 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 divides into two paths to flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) simultaneously. Fourth liquid heat mode: The first three-way valve (261) short-circuits the first heat exchanger (11). During the 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) heats up, 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); during the 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) heats up, 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). Equal temperature 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). And 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 claim 1, wherein the battery temperature control module (2) includes a power component (24) for driving the circulation of the heat exchange medium, 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, a second valve (221) is provided on the second parallel branch where the second battery heat exchanger (22) is located, and the first heat exchanger (11) and / or the heater are provided between the power component (24) and the battery heat exchanger.

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

17. The battery thermal management system according to claim 15, characterized in that the battery thermal management system includes a parallel circuit connecting the second valve (221) and the power component (24), a seventh valve (255) is provided on the parallel circuit, and a fourth valve (251) is provided between the first parallel branch and the second battery heat exchanger (22); Among them, 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 and then into the second battery heat exchanger (22).

18. The battery thermal management system according to claim 15, characterized in that the battery thermal management system includes a sixth valve (254) connecting between the first valve (211) and the power component (24), a seventh valve (255) is provided on the parallel circuit connecting the second valve (221) and the power component (24), and a fourth valve (251) is provided between the first parallel branch and the second battery heat exchanger (22); Among them, the battery thermal management system has a third mode, 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 and then is divided into two paths and flows through the first battery heat exchanger (21) and the second battery heat exchanger (22) simultaneously.

19. The battery thermal management system according to claim 15, characterized in that the battery thermal management system further 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), and a seventh valve (255) is provided on the parallel circuit connecting the second valve (221) and the power component (24), Among them, the battery thermal management system has a fourth mode, the first valve (211), the third valve (252), the second valve (221) and the fifth 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, 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 15-19, characterized in that The heater (23) and / or the first heat exchanger (11) are arranged on the main path upstream of the diversion port (A) and are connected in parallel through a first three-way valve (261).

21. The battery thermal management system according to any one of claims 15-19, characterized in that the battery thermal management system includes 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 through 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 through a third three-way valve (263).

22. The battery thermal management system according to claim 1, characterized in that the battery temperature control module (2) includes a power component (24) for driving the circulating flow of the heat exchange medium, 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 path upstream of the diversion port (A) and are connected in parallel through a first three-way valve (261), the battery thermal management system further includes a third parallel branch (25) connected in parallel between the first battery heat exchanger (21) and the second battery heat exchanger (22), and 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), and 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 a first loop connecting the first valve (211) and the power component (24), and a seventh valve (255) is provided on a second loop connecting the second valve (221) and the power component (24). The first loop and the second loop 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: A first liquid cooling mode, where 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. The power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21); A second liquid cooling mode, where the first three-way valve (261) connects the first heat exchanger (11) and the power component (24), 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 heat exchanger (11) and the second battery heat exchanger (22); 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. The power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and then divides into two paths to flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) simultaneously; 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 fifth valve (255) 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), the first battery heat exchanger (21), and the second battery heat exchanger (22) in sequence; Fifth liquid cooling mode: The first three-way valve (261) connects the first heat exchanger (11) and the power component (24). In the first preset time period, the first valve (211) and the sixth valve (254) 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 the first battery heat exchanger (21); In the second preset time period, 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 heat exchanger (11) and the second battery heat exchanger (22); First liquid heating mode: The first three-way valve (261) connects the heater (23) and the power component (24). The heater (23) heats up. The first valve (211) and the sixth valve (254) are opened, and the remaining 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); Second liquid heating mode: The first three-way valve (261) connects the heater (23) and the power component (24). The heater (23) heats up. 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 heater (23) and the second battery heat exchanger (22); Third liquid heating mode: The first three-way valve (261) connects the heater (23) and the power component (24). The heater (23) heats up. 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 heater (23) and then divides into two paths to flow through the first battery heat exchanger (21) and the second battery heat exchanger (22) simultaneously; Fourth liquid heat 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), the third valve (252), the second valve (221) and the fifth valve (255) are opened, and the rest of the valves are closed. The power component (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; Fifth liquid heat mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) is heated. During the first preset time period, the first valve (211) and the sixth valve (254) are opened, and the rest of the 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); During the second preset time period, the second valve (221) and the seventh valve (255) are opened, and the rest of the 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); First temperature equalization mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) stops 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 rest of the 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; Second temperature equalization mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) stops heating, the first valve (211), the third valve (252), the second valve (221) and the fifth valve (255) are opened, and the rest of the 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 Energy-saving mode, the first three-way valve (261) connects the heater (23) and the power component (24), the heater (23) stops 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 claim 1, characterized in that the battery temperature control module (2) includes a power component (24) for driving the 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) 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 path upstream of the shunt port (A) and can be selectively connected through the 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 the second three-way valve (262), and the second heater (232) is arranged on the second parallel branch through the third three-way valve (263). The battery thermal management system further 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), and 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 loop connecting the first valve (211) and the power component (24), and a seventh valve (255) is provided on the second loop connecting the second valve (221) and the power component (24). The first loop and the second loop 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: 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. The power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and the first battery heat exchanger (21). 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 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 heat exchanger (11) and the second battery heat exchanger (22). 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) shorts the first heater (231), the third three-way valve (263) shorts 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 rest of the valves are closed. The power component (24) drives the heat exchange medium to flow through the first heat exchanger (11) and then divides into two paths, flowing through the first battery heat exchanger (21) and the second battery heat exchanger (22) simultaneously; 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) shorts the first heater (231), the third three-way valve (263) shorts the second heater (232), the first valve (211), the third valve (252), the second valve (221) and the fifth valve (255) are opened, and the rest of the valves are closed. 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; Fifth liquid cooling mode: The first three-way valve (261) connects the first heat exchanger (11) and the power component (24). In the first preset time period, the second three-way valve (262) shorts 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 rest of the 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); In the second preset time period, the second three-way valve (262) is closed, the third three-way valve (263) shorts the second heater (232), the second valve (221) and the seventh valve (255) are opened, and the rest of the 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); First liquid heating mode: The first three-way valve (261) shorts 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) heats, the first valve (211) and the sixth valve (254) are opened, and the rest of the 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); Second liquid heating mode: The first three-way valve (261) shorts 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 heating, the second valve (221) and the seventh valve (255) are open, and the rest of the 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). Third liquid heating mode: The first three-way valve (261) shorts 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 heating, the first valve (211), the sixth valve (254), the second valve (221), the seventh valve (255) and the fourth valve (251) are open, and the rest of the valves are closed. The power component (24) drives the heat exchange medium to be divided into two paths and flow into the first heater (231) and the second heater (232) respectively for heating, and at the same time flow through the first battery heat exchanger (21) and the second battery heat exchanger (22). Fourth liquid heating mode: The first three-way valve (261) shorts 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 heating, the first valve (211), the third valve (252), the second valve (221) and the fifth valve (255) are open, and the rest of the valves are closed. 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. Fifth liquid heating mode: The first three-way valve (261) shorts the first heat exchanger (11). In the 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 heating, the first valve (211) and the sixth valve (254) are open, and the rest of the 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). In the 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 heating, the second valve (221) and the seventh valve (255) are open, and the rest of the 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). The first 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), 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; The second 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), the third valve (252), the second valve (221) and the fifth 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 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 claim 1, wherein, the heat exchange module (1) includes a compressor (14), an environment heat exchanger (13), an expansion valve (18), a first heat exchanger (11) and a second heat exchanger (12) connected in sequence. A four-way reversing valve (15) is provided between the compressor (14) and the environment heat exchanger (13).

27. The battery thermal management system according to any one of claims 12, 14, 23 and 25, wherein, 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 where the first heat exchanger (11) is located, and a second electronic expansion valve (17) is provided on the pipeline where the second heat exchanger (12) is located.

28. The battery thermal management system according to claim 27, wherein, in the liquid heat 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; when 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 claim 1, wherein, The battery thermal management system further includes a temperature detection element (3) disposed upstream or downstream of the plurality of battery heat exchange parts, so as to control whether the plurality of battery heat exchange parts work according to the information obtained by the temperature detection element (3).

30. An electrical equipment, characterized in that it includes the battery thermal management system according to any one of claims 1-29.

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