一种直冷直热式热管理系统

Abstract

本实用新型实施例公开了一种直冷直热式热管理系统，包括：制冷剂回路和电池温控回路；制冷剂回路包括电动压缩机、外部换热器、冷凝器、蒸发器、余热回收器和气液分离器；电池温控回路包括电池包总成，电池包总成的第一端连接电动压缩机的第一端、蒸发器的第二端和气液分离器的第一端，电池包总成的第二端连接电动压缩机的第二端、冷凝器的第二端、蒸发器的第一端、余热回收器的第一端，电池包总成的第二端与电动压缩机的第二端之间设有第一电子膨胀阀。第一电子膨胀阀可以从电池包总成出来的制冷剂喷入电动压缩机吸入口，降低了电动压缩机的排气温度，减小进入电池包总成制冷剂过热度。解决了电池包总成直热时电动压缩机排气过热度过大的问题。

Claims

1. A direct-cooling direct-heat thermal management system, characterized by, include: Refrigerant circuit and battery temperature control circuit; The refrigerant circuit includes an electric compressor (1), an external heat exchanger (3), a condenser (13), an evaporator (14), a waste heat recovery unit (15), and a gas-liquid separator (20); The first end of the electric compressor (1) is connected to the first end of the external heat exchanger (3) and the first end of the condenser (13). The second end of the external heat exchanger (3) is connected to the first end of the evaporator (14) and the first end of the waste heat recovery unit (15). The second end of the condenser (13) is connected to the second end of the electric compressor (1). The second ends of the evaporator (14) and the waste heat recovery unit (15) are both connected to the first end of the gas-liquid separator (20). The first end of the gas-liquid separator (20) is also connected to the first end of the external heat exchanger (3). The second end of the gas-liquid separator (20) is connected to the second end of the electric compressor (1). The battery temperature control circuit includes a battery pack assembly (17). The first end of the battery pack assembly (17) is connected to the first end of the electric compressor (1), the second end of the evaporator (14), and the first end of the gas-liquid separator (20). The second end of the battery pack assembly (17) is connected to the second end of the electric compressor (1), the second end of the condenser (13), the first end of the evaporator (14), and the first end of the waste heat recovery unit (15). A first electronic expansion valve (19) is provided between the second end of the battery pack assembly (17) and the second end of the electric compressor (1).

2. The direct-cooling direct-heat thermal management system of claim 1, wherein, Also includes: The coolant circuit includes a low-temperature radiator (4), a drive motor (22), and an electric water pump (23); The drive motor (22) and the electronic water pump (23) are connected in series between the first end of the electronic three-way valve (21) and the third end of the waste heat recovery unit (15). The second end of the electronic three-way valve (21) is connected to the fourth end of the waste heat recovery unit (15). The third end of the electronic three-way valve (21) is connected to the first end of the low-temperature radiator (4). The second end of the low-temperature radiator (4) is connected to the fourth end of the waste heat recovery unit (15).

3. The direct-cooling direct-heat thermal management system of claim 1, wherein, A first electromagnetic shut-off valve (2) is provided between the first end of the electric compressor (1) and the first end of the external heat exchanger (3). A second electronic expansion valve (6) and a third electronic expansion valve (9) are provided between the second end of the external heat exchanger (3) and the first end of the evaporator (14). A second electronic expansion valve (6) and a fourth electronic expansion valve (8) are provided between the second end of the external heat exchanger (3) and the first end of the waste heat recovery unit (15). A second electromagnetic shut-off valve (10) is provided between the first end of the electric compressor (1) and the first end of the condenser (13).

4. The direct cooling and direct heating thermal management system according to claim 3, characterized in that, It also includes a blower (12), which is provided on the condenser (13) and the evaporator (14).

5. The direct-cooling direct-heat thermal management system of claim 1, wherein, A third electromagnetic shut-off valve (11) is provided between the first end of the battery pack assembly (17) and the first end of the electric compressor (1), a fifth electronic expansion valve (16) and a first electronic expansion valve (19) are provided between the second end of the battery pack assembly (17) and the second end of the electric compressor (1), and a sixth electronic expansion valve (18) is provided between the first end of the battery pack assembly (17) and the second end of the evaporator (14).

6. The direct-cooling direct-heat thermal management system of claim 3 or 5, wherein, The diameters of the second electronic expansion valve (6), the fifth electronic expansion valve (16), and the sixth electronic expansion valve (18) are all larger than the diameters of the first electronic expansion valve (19), the third electronic expansion valve (9), and the fourth electronic expansion valve (8).

7. The direct-cooling direct-heat thermal management system of claim 3 or 5, wherein, The first electromagnetic shut-off valve (2), the second electromagnetic shut-off valve (10), and the third electromagnetic shut-off valve (11) include normally closed electromagnetic valves.

8. The direct-cooling direct-heat thermal management system of claim 1, wherein, It also includes a cooling fan (5), which is provided on the external heat exchanger (3).

9. The direct-cooling direct-heat thermal management system of claim 1, wherein, It also includes a one-way valve (7), which is disposed between the second end of the condenser (13) and the first end of the waste heat recovery unit (15).

10. The direct-cooling direct-heat thermal management system of claim 1, wherein, The waste heat recovery unit (15) includes upper and lower parts. The upper part of the waste heat recovery unit (15) includes the third end and the fourth end of the waste heat recovery unit (15), and the lower part of the waste heat recovery unit (15) includes the first end and the second end of the waste heat recovery unit (15).

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