High-rate charge-discharge battery thermal management system, power battery pack and vehicle

Abstract

The invention discloses a high-magnification charge-discharge battery thermal management system, a power battery pack and a vehicle, and relates to the technical field of thermal management equipment.The high-magnification charge-discharge battery thermal management system comprises a heat exchange loop formed by sequentially connecting a compressor, a condensation assembly and an expansion assembly in series, the two ends of the heat exchange loop are used for being communicated with a heat exchange assembly in the heat management object. Wherein the condensation assembly comprises an air-cooled condenser and a liquid-cooled condenser which are connected in series or in parallel; according to the high-rate charge-discharge battery heat management system, the power battery pack and the vehicle, the air-cooled condenser and the liquid-cooled condenser are arranged in series or in parallel, so that the heat exchange mode of the condensers is increased, the heat dissipation efficiency of the condensers is improved, the temperature of a refrigerant entering a heat exchange assembly of a heat management object is reduced, and the temperature control effect of the heat management object is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management equipment, and more specifically, to a high-rate charge and discharge battery thermal management system, a power battery pack, and a vehicle. Background Art

[0002] When high-rate charge and discharge of new energy vehicles or high-load operation of servers are carried out, the battery cells need to be used as the objects for thermal management control, and their temperatures need to be controlled. Compression refrigeration is mostly used for cooling; among them, compression refrigeration uses the phase change of the medium to achieve heat transfer. Its refrigeration efficiency is high. The specific process is that the low-temperature and low-pressure refrigerant enters the heat exchanger of the thermal management object, exchanges heat with the thermal management object, and becomes a high-temperature and low-pressure refrigerant. Subsequently, it is compressed by a compressor into a high-temperature and high-pressure refrigerant, and then enters the condenser for heat dissipation, becoming a low-temperature and high-pressure refrigerant. Subsequently, after expansion by an expansion component, it becomes a low-temperature and low-pressure refrigerant and enters the heat exchanger of the thermal management object again for heat exchange, realizing the circulation of the refrigerant and the transfer of heat.

[0003] However, in actual use, the condenser is mostly air-cooled for heat dissipation, relying on the airflow in the external environment to dissipate heat from the high-temperature and high-pressure refrigerant flowing through it. The heat dissipation efficiency is limited. Therefore, the refrigerant entering the expansion component still has a relatively high temperature, and the temperature of the low-temperature and low-pressure refrigerant after expansion by the expansion component is still relatively high, which is not conducive to improving the temperature control effect of the thermal management object.

[0004] In summary, how to solve the problem of the unsatisfactory temperature control effect of the thermal management object caused by the low heat dissipation efficiency of the condenser is an urgent problem to be solved by those skilled in the art at present. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a high-rate charge and discharge battery thermal management system. By setting an air-cooled condenser and a liquid-cooled condenser in series or in parallel, the heat exchange methods of the condenser are increased, thereby improving the heat dissipation efficiency of the condenser, reducing the temperature of the refrigerant entering the heat exchange component of the thermal management object, and improving the temperature control effect of the thermal management object.

[0006] Another object of the present invention is to provide a power battery pack including the above high-rate charge and discharge battery thermal management system, which has the same technical features and can solve the same technical problems.

[0007] Another object of the present invention is to provide a vehicle including the above high-rate charge and discharge battery thermal management system and / or power battery pack, which has the same technical features and can solve the same technical problems.

[0008] In order to achieve the above objects, the present invention provides the following technical solutions: A high-rate charge and discharge battery thermal management system for regulating the temperature of a thermal management object; A high-rate charge and discharge battery thermal management system, comprising a heat exchange loop in which a compressor, a condensation assembly, and an expansion assembly are connected in series in sequence, and both ends of the heat exchange loop are used to conduct to a heat exchange assembly in the thermal management object; Wherein, the condensation assembly includes an air-cooled condenser and a liquid-cooled condenser connected in series or in parallel.

[0009] Preferably, the air-cooled condenser and the liquid-cooled condenser are connected in series; A first bypass is arranged in parallel at the air-cooled condenser, and a second three-way valve for flow distribution between the first bypass and the air-cooled condenser is arranged therebetween; And / or, A second bypass is arranged in parallel at the liquid-cooled condenser, and a third three-way valve for flow distribution between the second bypass and the liquid-cooled condenser is arranged therebetween.

[0010] Preferably, the air-cooled condenser and the liquid-cooled condenser are connected in parallel, and a first three-way valve for flow distribution is arranged between the air-cooled condenser and the liquid-cooled condenser.

[0011] Preferably, a high-boiling refrigerant is filled in the heat exchange loop, the compressor is a fluorine pump compressor, and the expansion assembly is an expansion valve with adjustable flux.

[0012] Preferably, the heat exchange assembly includes a super heat conducting plate and a super conducting heat exchanger; The super conducting heat exchanger is connected in series in the heat exchange loop; The super heat conducting plate is in contact with the super conducting heat exchanger and the thermal management object for heat exchange at the same time.

[0013] Preferably, the heat exchange assembly further includes a heating assembly, and the heating assembly is in contact with the super heat conducting plate for heat exchange.

[0014] Preferably, the liquid-cooled condenser includes a heat exchanger, a first channel of the heat exchanger is connected in series or in parallel with the air-cooled condenser, and a coolant transmission joint is connected in series to a second channel of the heat exchanger for connecting the second channel of the heat exchanger and a coolant circulation device.

[0015] Preferably, a first stop valve and a second stop valve are respectively arranged at the outlet end and the inlet end of the heat exchange assembly for controlling the on-off between the heat exchange assembly and the heat exchange loop.

[0016] A power battery pack, comprising a heat exchange assembly, a plurality of groups of battery cells arranged in an array, and the high-rate charge and discharge battery thermal management system according to any one of the above; The heat exchange assembly includes a plurality of super heat conducting plates, and the super heat conducting plates are embedded in the arrangement gaps of the battery cells and are in contact with the side walls of the battery cells for heat exchange.

[0017] A vehicle, comprising the high-rate charge-discharge battery thermal management system described in any one of the above and / or the power battery pack described above.

[0018] Compared with the prior art, the high-rate charge-discharge battery thermal management system provided by the present invention has at least the following beneficial effects: By providing an air-cooled condenser and a liquid-cooled condenser, the heat exchange method of the condenser is increased, the heat dissipation efficiency of the high-temperature refrigerant in the condenser is improved, and thus the temperature of the refrigerant entering the heat exchanger of the heat management object is reduced, which further helps to improve the cooling effect of the heat management object.

[0019] The power battery pack provided by the present invention includes the above-mentioned high-rate charge-discharge battery thermal management system and has the same technical effects.

[0020] The vehicle provided by the present invention includes the above-mentioned high-rate charge-discharge battery thermal management system and / or power battery pack and has the same technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the first specific embodiment provided by the present invention; Figure 2 It is a schematic structural diagram of the second specific embodiment provided by the present invention; Figure 3 It is a schematic structural diagram of the third specific embodiment provided by the present invention; Figure 4 It is a schematic structural diagram of the fourth specific embodiment provided by the present invention; Figure 5 It is a schematic structural diagram of the fifth specific embodiment provided by the present invention; Figure 6 It is a schematic structural diagram of the sixth specific embodiment provided by the present invention; Figure 7 It is a schematic structural diagram of the seventh specific embodiment provided by the present invention; Figure 8 It is an assembly schematic diagram of the battery cells and the heat exchange components in the power battery pack provided by the present invention.

[0023] In the figure: 1. Heat exchange component; 11. Ultra heat-conducting plate; 12. Superconducting heat exchanger; 2. Compressor; 3. Air-cooled condenser; 31. First bypass; 4. Liquid-cooled condenser; 41. Second bypass; 42. Coolant transfer joint; 5. Expansion assembly; 6. Valve device; 61. First stop valve; 62. Second stop valve; 63. First three-way valve; 64. Second three-way valve; 65. Third three-way valve; 7. Battery cell; 8. Heating assembly. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] The core of the present invention is to provide a high-rate charge-discharge battery thermal management system. By setting the air-cooled condenser and the liquid-cooled condenser in series or in parallel, the heat exchange methods of the condenser are increased, thereby improving the heat dissipation efficiency of the condenser, reducing the temperature of the refrigerant entering the heat exchange component of the thermal management object, and improving the temperature control effect of the thermal management object.

[0026] Another core of the present invention is to provide a power battery pack including the above high-rate charge-discharge battery thermal management system, which has the same technical features and can solve the same technical problems.

[0027] Another core of the present invention is to provide a vehicle including the above high-rate charge-discharge battery thermal management system and / or the power battery pack, which has the same technical features and can solve the same technical problems.

[0028] Please refer to Figure 1 and Figure 2 , a high-rate charge-discharge battery thermal management system for temperature regulation of a thermal management object; The high-rate charge-discharge battery thermal management system includes a heat exchange circuit in which a compressor 2, a condensation assembly, and an expansion assembly 5 are connected in series in sequence. Both ends of the heat exchange circuit are used to conduct with the heat exchange component 1 in the thermal management object; Among them, the condensation assembly includes an air-cooled condenser 3 and a liquid-cooled condenser 4 connected in series or in parallel.

[0029] As Figure 1As shown, the air-cooled condenser 3 and the liquid-cooled condenser 4 in the condensing component are connected in series in the heat exchange circuit, that is, the high-temperature and high-pressure refrigerant compressed by the compressor 2 is cooled once through the air-cooled condenser 3, and then cooled twice through the liquid-cooled condenser 4, so that the temperature of the refrigerant entering the expansion component 5 is lower, and the temperature of the low-pressure and low-temperature refrigerant after expansion through the expansion component 5 is lower, so that the thermal management object can obtain a better cooling effect.

[0030] like Figure 2 As shown, the air-cooled condenser 3 and the liquid-cooled condenser 4 in the condensation assembly are connected in parallel in the heat exchange circuit, that is, the high-temperature and high-pressure refrigerant compressed by the compressor 2 can pass through the air-cooled condenser 3 alone, or pass through the liquid-cooled condenser 4 alone, or pass through the air-cooled condenser 3 and the liquid-cooled condenser 4 partly, and dissipate heat in batches. Finally, the refrigerant after heat dissipation is mixed and enters the expansion assembly 5 for expansion. Compared with Figure 1 The air-cooled condenser 3 and the liquid-cooled condenser 4 are connected in series, and the system flow resistance is reduced, which helps to reduce the load of the compressor 2.

[0031] Moreover, the air-cooled condenser 3 uses a fan to drive the external air flow through, thereby dissipating the heat itself. In actual use, the fan can be started as needed, and then the air-cooled condenser 3 can be controlled to be used for cooling the refrigerant as needed; similarly, the liquid-cooled condenser 4 relies on the circulating coolant provided by the coolant circulation system for refrigeration. By controlling whether the coolant circulation system is connected or started, it is possible to control whether the liquid-cooled condenser 4 is used for cooling the refrigerant. Therefore, in actual use, the condenser used for refrigerant heat dissipation can be selected according to the actual working conditions. The air-cooled condenser 3 and the liquid-cooled condenser 4 can be used separately or in combination. By selecting the corresponding usage method, energy saving can be achieved while ensuring the temperature control effect.

[0032] In some embodiments, the air-cooled condenser 3 and the liquid-cooled condenser 4 are connected in series; A first bypass 31 is provided in parallel with the air-cooled condenser 3, and a second three-way valve 64 is provided between the first bypass 31 and the air-cooled condenser 3 for flow distribution between the two. and / or, A second bypass 41 is provided in parallel with the liquid-cooled condenser 4 , and a third three-way valve 65 is provided between the second bypass 41 and the liquid-cooled condenser 4 for flow distribution between the two.

[0033] like Figure 3 As shown, the first bypass 31 is arranged in parallel only at the air-cooled condenser 3, and the inlet of the second three-way valve 64 is connected to the outlet of the compressor 2, and the two optional outlets of the second three-way valve 64 are connected to the first bypass 31 and the outlet of the air-cooled condenser 3 respectively; When the air-cooled condenser 3 is not started, the first bypass 31 can be turned on to short-circuit the air-cooled condenser 3, thereby reducing the system flow resistance, that is, reducing the load of the compressor 2. When the air-cooled condenser 3 is started, the first bypass 31 is turned off, so that all the refrigerant flows through the air-cooled condenser 3 for cooling.

[0034] As Figure 4 shown, only the second bypass 41 is connected in parallel at the liquid-cooled condenser 4, and the inlet of the third three-way valve 65 is connected to the outlet of the air-cooled condenser 3. The two optional outlets of the third three-way valve 65 are respectively connected to the second bypass 41 and the inlet of the liquid-cooled condenser 4. When the liquid-cooled condenser 4 is not started, the second bypass 41 can be turned on to short-circuit the liquid-cooled condenser 4, thereby reducing the system flow resistance, that is, reducing the load of the compressor 2. When the liquid-cooled condenser 4 is started, the second bypass 41 is turned off, so that all the refrigerant flows through the liquid-cooled condenser 4 for cooling.

[0035] As Figure 5 shown, the first bypass 31 and the second bypass 41 are respectively arranged at the air-cooled condenser 3 and the liquid-cooled condenser 4. The two optional outlets of the second three-way valve 64 are respectively connected to the first bypass 31 and the port of the air-cooled condenser 3. The two conduction paths of the third three-way valve 65 are respectively the first path connecting the first bypass 31 and the liquid-cooled condenser 4 and the second path connecting the air-cooled condenser 3 and the second bypass 41. The outlet of the air-cooled condenser 3 is connected to the inlet of the liquid-cooled condenser 4. In use, according to the needs, the first bypass 31 or the second bypass 41 is selected to be turned on, so that the unstarted air-cooled condenser 3 or liquid-cooled condenser 4 is short-circuited, thereby reducing the flow resistance of the system.

[0036] As Figure 6 shown, the first bypass 31 and the second bypass 41 are respectively arranged at the air-cooled condenser 3 and the liquid-cooled condenser 4. The two optional outlets of the second three-way valve 64 are respectively connected to the first bypass 31 and the port of the air-cooled condenser 3. The outlet of the third three-way valve 65 is connected to the inlet of the expansion assembly 5. The two optional inlets of the third three-way valve 65 are respectively connected to the second bypass 41 and the outlet of the liquid-cooled condenser 4. The outlet of the air-cooled condenser 3 is connected to the inlet of the liquid-cooled condenser 4. The outlet of the first bypass 31 is connected to the inlet of the second bypass 41. In use, according to the needs, the first bypass 31 or the second bypass 41 is selected to be turned on, so that the unstarted air-cooled condenser 3 or liquid-cooled condenser 4 is short-circuited, thereby reducing the flow resistance of the system.

[0037] In the above embodiment, the air-cooled condenser 3 is connected in series at the upstream end of the liquid-cooled condenser 4, that is, the refrigerant can be air-cooled once and liquid-cooled twice in sequence to realize the gradient cooling of the refrigerant, which is beneficial to improving the cooling effect of the refrigerant.

[0038] In some embodiments, an air-cooled condenser 3 is connected in series to the downstream end of a liquid-cooled condenser 4, which also falls within the protection scope of this application.

[0039] In some embodiments, the air-cooled condenser 3 and the liquid-cooled condenser 4 are connected in parallel, and a first three-way valve 63 for flow distribution is provided between the air-cooled condenser 3 and the liquid-cooled condenser 4.

[0040] As Figure 2 shown, the air-cooled condenser 3 and the liquid-cooled condenser 4 are connected in parallel within the heat exchange circuit. The first three-way valve 63 is a proportional valve or a reversing valve. Its inlet is in communication with the outlet of the compressor 2, and the two outlets are respectively in communication with the inlets of the air-cooled condenser 3 and the liquid-cooled condenser 4. By controlling the refrigerant flow rates in the air-cooled condenser 3 and the liquid-cooled condenser 4, the control of the refrigerant cooling effect is achieved, and further the cooling effect of the heat management object is controlled.

[0041] Meanwhile, the air-cooled condenser 3 and the liquid-cooled condenser 4 are redundantly arranged with each other. When one of them is damaged, the other can still operate normally to ensure the normal temperature control of the heat management object.

[0042] In some embodiments, the heat exchange circuit is filled with a refrigerant having a high boiling point. The compressor 2 is a fluorine pump compressor, and the expansion assembly 5 is an expansion valve with adjustable flux.

[0043] In actual use, the compressor 2 is preferably a fluorine pump compressor, which has a dual working mode of a compressor and a fluorine pump; When the compressor mode is adopted, it has a large compression ratio to achieve the phase change of the refrigerant, and then the heat is transported in the heat exchange circuit by using the phase change of the refrigerant; When the fluorine pump mode is adopted, it has a large flux to achieve the rapid circulation of the refrigerant. At this time, the refrigerant is preferably a refrigerant with a high boiling point, such as pentafluoroethane, whose boiling point is 15°C. It liquefies below the boiling point temperature. Therefore, after being cooled by the condensation assembly, it can naturally turn into a liquid state. When passing through the heat exchange component 1 of the heat management object, the liquid refrigerant can absorb a part of the heat when it is heated up, and at the same time, the liquid refrigerant vaporizes, which can also absorb a part of the heat, thus realizing the rapid heat exchange with the heat management object; It should be noted that the expansion assembly 5 is preferably an expansion valve with adjustable flux, which is correspondingly regulated with the fluorine pump compressor. When the fluorine pump compressor is in the compressor mode, the expansion valve is in the expansion mode; when the fluorine pump compressor is in the fluorine pump mode, the expansion valve is in the direct-through mode.

[0044] In some embodiments, the heat exchange component 1 includes a super heat conducting plate 11 and a super conducting heat exchanger 12; The super conducting heat exchanger 12 is connected in series within the heat exchange circuit; The super heat conducting plate 11 is in contact with both the super conducting heat exchanger 12 and the heat management object for heat exchange.

[0045] As shown Figure 8 in the figure, the combination of the ultra - heat - conducting plate 11 and the superconducting heat exchanger 12 is adopted to realize the heat exchange between the heat exchange loop and the heat management object, effectively improving the heat exchange efficiency between the heat exchange loop and the heat management object, and further improving the temperature control effect of the heat management object.

[0046] In some embodiments, the heat exchange assembly 1 further includes a heating assembly 8, and the heating assembly 8 exchanges heat in contact with the ultra - heat - conducting plate 11.

[0047] As shown Figure 8 in the figure, the heating assembly 8 is integrated in the heat exchange assembly 1, and the ultra - heat - conducting plate 11 is heated through heating forms such as electric heating, and then the heat management object is heated to meet the heating requirement of the heat management object.

[0048] For application scenarios such as new energy vehicles, its power battery is used as the heat management object. When the vehicle is in a low - temperature environment, the power battery is pre - heated by the heating assembly 8, so that the power battery can quickly enter the high - power charging mode. And during driving, through the pre - heating of the power battery, the power battery can quickly enter the high - power discharging mode, thereby improving the low - temperature performance of the vehicle.

[0049] In some embodiments, the liquid - cooled condenser 4 includes a heat exchanger. The first channel of the heat exchanger is connected in series or in parallel with the air - cooled condenser 3, and the second channel of the heat exchanger is connected in series with a coolant transfer joint 42 for connecting the second channel of the heat exchanger and the coolant circulation device.

[0050] For application scenarios such as new energy vehicles, its power battery is used as the heat management object. During the normal driving of the vehicle, the power battery will generate a certain amount of heat, and the generated heat needs to be discharged in time. In this process, only the air - cooled condenser 3 needs to work. At this time, the liquid - cooled condenser 4 can be not started, or the liquid - cooled condenser 4 can be short - circuited by the second bypass 41 to reduce the system flow resistance, thereby reducing the energy consumption of the high - rate charge - discharge battery thermal management system, saving the electric energy of the power battery, and improving the endurance of the vehicle.

[0051] However, when the vehicle is undergoing high-rate charging, the power battery generates a large amount of heat, and the vehicle is in a stationary state. The air-cooled condenser 3 will cause heat to accumulate around the vehicle, thereby reducing the heat dissipation effect. Therefore, it is necessary to start the liquid-cooled condenser 4 to cool the refrigerant. However, integrating a complete set of refrigerant circulation devices inside the vehicle will inevitably increase the curb weight of the vehicle and affect the vehicle's endurance. Therefore, the liquid-cooled condenser 4 adopts the design of a heat exchanger and a coolant transfer joint 42, and externally places the refrigerant circulation device in a charging station or a charging pile. When the vehicle is plugged in for charging, a conduction circuit between the heat exchanger and the refrigerant circulation device is established by plugging in the charging gun at the same time. Then, the externally placed refrigerant circulation device is used to cool the heat exchanger in the liquid-cooled condenser 4. Moreover, during charging, the air-cooled condenser 3 can be short-circuited through the first bypass 31, reducing the power loss in the power battery, increasing the charging rate, and avoiding heat accumulation around the vehicle, especially in an enclosed garage, effectively avoiding the temperature rise in the enclosed environment.

[0052] However, when the vehicle is undergoing high-rate charging and the power battery generates a large amount of heat, the air-cooled condenser 3 and the liquid-cooled condenser 4 can still be synchronously enabled to cool the power battery to ensure charging safety.

[0053] In some embodiments, when the power battery of the server undergoes high-rate discharging, the air-cooled condenser 3 and the liquid-cooled condenser 4 are used in combination and regulated by a valve device 6 including a first three-way valve 63, a second three-way valve 64, and a third three-way valve 65 to adapt to the different heat generation situations of the server under different loads. Moreover, the two are redundant backups for each other to ensure the stable temperature control of the server.

[0054] In some embodiments, a first stop valve 61 and a second stop valve 62 are respectively arranged at the outlet end and the inlet end of the heat exchange assembly 1 to control the on-off between the heat exchange assembly 1 and the heat exchange circuit.

[0055] As Figure 1 shown, a first stop valve 61 and a second stop valve 62 are respectively arranged at the outlet end and the inlet end of the heat exchange assembly 1. When the heat exchange assembly 1 is being repaired, by closing the first stop valve 61 and the second stop valve 62, the refrigerant leakage in the heat exchange circuit can be effectively avoided.

[0056] In addition to the high-rate charge and discharge battery thermal management system disclosed in each of the above embodiments, the present invention also provides a power battery pack including the above high-rate charge and discharge battery thermal management system. The power battery pack includes a heat exchange assembly 1, several groups of battery cells 7 arranged in an array, and the high-rate charge and discharge battery thermal management system of any one of the above; The heat exchange assembly 1 includes several ultra-high thermal conductivity plates 11, and the ultra-high thermal conductivity plates 11 are embedded in the arrangement gaps of the battery cells 7 and are in contact with the side walls of the battery cells 7 for heat exchange.

[0057] As Figure 8 shown, the battery cells 7 are arranged in an array, and the ultra-high thermal conductivity plate 11 is embedded in the gap between the battery cells 7, contacting the largest side wall of the battery cells 7. Moreover, multiple battery cells 7 jointly contact the same ultra-high thermal conductivity plate 11. In the ultra-high thermal conductivity plate 11, the phase change of the medium is used to rapidly transfer heat, effectively improving the temperature consistency of the battery cells 7 themselves and different positions of multiple battery cells 7.

[0058] In addition to the high-rate charge-discharge battery thermal management system and the power battery pack disclosed in each of the above embodiments, the present invention also provides a vehicle including the above high-rate charge-discharge battery thermal management system or power battery pack. As Figure 7 shown, multiple power battery packs are integrated in the vehicle, and multiple power battery packs share the same high-rate charge-discharge battery thermal management system. Specifically, the heat exchange components 1 of multiple power battery packs are connected in parallel and then conduct with the heat exchange circuit.

[0059] For the structures of other parts of the vehicle, reference may be made to the prior art, which will not be elaborated herein.

[0060] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference may be made to each other.

[0061] The high-rate charge-discharge battery thermal management system, the power battery pack, and the vehicle provided by the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A high-rate charge and discharge battery thermal management system for regulating the temperature of a thermal management object, characterized in that, It includes a heat exchange circuit in which a compressor (2), a condensation component, and an expansion component (5) are connected in series in sequence, and both ends of the heat exchange circuit are used to conduct with a heat exchange component (1) in the heat management object; Among them, the condensation component includes an air-cooled condenser (3) and a liquid-cooled condenser (4) connected in series or in parallel.

2. The high-rate charge and discharge battery thermal management system according to claim 1, characterized in that The air-cooled condenser (3) and the liquid-cooled condenser (4) are connected in series; A first bypass (31) is provided in parallel at the air-cooled condenser (3), and a second three-way valve (64) for flow distribution between the first bypass (31) and the air-cooled condenser (3) is provided; And / or, A second bypass (41) is provided in parallel at the liquid-cooled condenser (4), and a third three-way valve (65) for flow distribution between the second bypass (41) and the liquid-cooled condenser (4) is provided.

3. The high-rate charge and discharge battery thermal management system according to claim 1, wherein The air-cooled condenser (3) and the liquid-cooled condenser (4) are connected in parallel, and a first three-way valve (63) for flow distribution is provided between the air-cooled condenser (3) and the liquid-cooled condenser (4).

4. The high-rate charge and discharge battery thermal management system according to claim 1, characterized in that, A high-boiling refrigerant is filled in the heat exchange circuit, the compressor (2) is a fluorine pump compressor, and the expansion component (5) is an expansion valve with adjustable flux.

5. The high-rate charge and discharge battery thermal management system according to claim 1, wherein The heat exchange component (1) includes a super heat-conducting plate (11) and a super heat-conducting heat exchanger (12); The super heat-conducting heat exchanger (12) is connected in series in the heat exchange circuit; The super heat-conducting plate (11) simultaneously exchanges heat with the super heat-conducting heat exchanger (12) and the heat management object.

6. The high-rate charge-discharge battery thermal management system according to claim 5, wherein The heat exchange component (1) further includes a heating component (8), and the heating component (8) exchanges heat with the super heat-conducting plate (11).

7. The high-rate charge-discharge battery thermal management system according to claim 1, wherein The liquid-cooled condenser (4) includes a heat exchanger, the first channel of the heat exchanger is connected in series or in parallel with the air-cooled condenser (3), and a coolant transmission joint (42) is connected in series in the second channel of the heat exchanger for connecting the second channel of the heat exchanger and a coolant circulation device.

8. The high-rate charge and discharge battery thermal management system according to any one of claims 1-7, characterized in that, A first stop valve (61) and a second stop valve (62) are respectively provided at the outlet end and the inlet end of the heat exchange component (1) for controlling the on-off between the heat exchange component (1) and the heat exchange circuit.

9. A power battery pack, characterized in that, It includes a heat exchange component (1), several groups of battery cells (7) arranged in an array, and a high-rate charge-discharge battery thermal management system according to any one of claims 1-8; The heat exchange component (1) includes several super heat-conducting plates (11), and the super heat-conducting plates (11) are embedded in the arrangement gaps of the battery cells (7) and contact and exchange heat with the side walls of the battery cells (7).

10. A vehicle, characterized in that, It includes a high-rate charge-discharge battery thermal management system according to any one of claims 1-8 and / or a power battery pack according to claim 9.

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