Charging system

Abstract

The utility model discloses a charging system. The charging system includes: a battery device for storing electric energy; the charging connector is electrically connected with the battery device and is used for charging to-be-charged equipment; the heat management system comprises a first heat exchange flow path, a second heat exchange flow path and a cold storage flow path; wherein the first heat exchange flow path comprises a first heat exchanger used for carrying out heat exchange with the battery device, the cold storage flow path is connected with the first heat exchange flow path in a switching connection and disconnection mode, the cold storage flow path comprises a cold storage container and a phase change component, the cold storage container is filled with a heat exchange medium, and the phase change component is located in the cold storage container; and the phase change part is used for absorbing or releasing the cooling capacity of the heat exchange medium. Through the arrangement of the phase change part in the cold storage container, the energy consumption of the charging system can be reduced, and the charging system can operate more stably and reliably.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a charging system. Background Art

[0002] As environmental pollution becomes increasingly serious, the new energy industry has attracted more and more attention. In the new energy industry, battery technology is an important factor related to its development. Rechargeable batteries can continue to be used by activating active substances by charging after discharge, and they have broad application prospects in electric vehicles and other fields. Electric vehicles are powered by batteries and need to be charged frequently. Charging stations can charge the batteries of electric vehicles, and how to better manage the thermal management of charging stations has become an important research direction. Utility Model Content

[0003] In view of the above problems, the present application provides a charging system that absorbs and stores the cold energy of a heat exchange medium through a cold storage container, and can release the cold energy during high current discharge.

[0004] In a first aspect, the present application provides a charging system, comprising:

[0005] Battery devices for storing electrical energy;

[0006] A charging connector, electrically connected to the battery device, for charging the device to be charged; and

[0007] A thermal management system, comprising a first heat exchange flow path, a second heat exchange flow path and a cold storage flow path;

[0008] Among them, the first heat exchange flow path includes a first heat exchanger for performing heat exchange with the battery device, the cold storage flow path is connected to the first heat exchange flow path, the cold storage flow path includes a cold storage container and a phase change component, the cold storage container is configured to be suitable for passing a heat exchange medium, the phase change component is located in the cold storage container, the phase change component is used to absorb or release the cold of the heat exchange medium, and the second heat exchange flow path includes a second heat exchanger for performing heat exchange with the charging connector.

[0009] In this embodiment, the charging system has a charging connector and a battery device, which can store energy through the battery device when the power demand or electricity price is low, and can be used to charge the power battery when the power demand or electricity price is high, thereby reducing the operating cost of the charging system and reducing the burden on the power grid. For this charging system, a first heat exchange flow path and a second heat exchange flow path are set to respectively exchange heat between the battery device and the charging connector through the first heat exchanger and the second heat exchanger, so as to effectively meet the thermal management requirements of the charging connector and the battery device; at the same time, the phase change component in the cold storage container can be used to store and release cold energy according to different requirements. The cold storage container can store cold energy according to the needs of the charging system itself, such as when the charging system is not discharging a large current, and can release cold energy when discharging a large current. The phase change component in the cold storage container can adjust the liquid supply temperature of the first heat exchange flow path according to different discharge conditions of the charging system, so that the liquid supply temperature is more stable and energy consumption can be reduced.

[0010] In some embodiments, the phase change component includes a heat-conducting housing and a phase change layer. The heat-conducting housing has a closed accommodating cavity, and the accommodating cavity is filled with the phase change layer.

[0011] The heat-conducting shell isolates the phase change layer from the heat exchange medium. Especially under the influence of ambient temperature, the phase change layer may undergo phase change (solid-liquid transition). The setting of the shell can reduce the mixing of the phase change layer into the cold storage container. At the same time, the liquid can reduce the reaction between the phase change layer and the heat exchange medium, so that the phase change component can absorb and release cold more reliably.

[0012] In some embodiments, there are multiple phase change components, and the multiple phase change components are arranged at intervals.

[0013] Multiple phase change components are arranged at intervals, so that the heat exchange medium can fully contact the phase change components to absorb or release more cold energy.

[0014] In some embodiments, the thermal management system also includes a first switching mechanism, and the second heat exchange flow path is connected to the first heat exchange flow path through the first switching mechanism. The first switching mechanism is configured to perform a switching operation to connect the second heat exchange flow path with the first heat exchange flow path via the first switching mechanism, or to disconnect the connection between the second heat exchange flow path and the first heat exchange flow path via the first switching mechanism.

[0015] The first switching mechanism connects or disconnects the second heat exchange flow path with the first heat exchange flow path, and can form different heat exchange flow paths, so as to effectively meet the thermal management requirements of the charging connector and the battery device, and improve the flexibility of the thermal management requirement configuration.

[0016] In some embodiments, the thermal management system also includes a compression refrigeration cycle circuit and a third switching mechanism. The compression refrigeration cycle circuit includes an evaporator. The evaporator has an internal heat exchange flow path. The internal heat exchange flow path is connected to the first heat exchange flow path through a third switching mechanism, so that through the switching operation of the third switching mechanism, the internal heat exchange flow path is connected to the first heat exchange flow path via the third switching mechanism, or the connection relationship between the internal heat exchange flow path and the first heat exchange flow path via the third switching mechanism is disconnected.

[0017] In this embodiment, through the switching operation of the third switching mechanism, the internal heat exchange flow path is connected with the first heat exchange flow path via the third switching mechanism, or the connection relationship between the internal heat exchange flow path and the first heat exchange flow path via the third switching mechanism is disconnected, so that the compression refrigeration cycle can be used to improve the thermal management efficiency achieved by the first heat exchange flow path, and through the switching operation of the third switching mechanism, different heat exchange medium circulation loops can be formed, thereby improving the configuration flexibility for different thermal management requirements.

[0018] In some embodiments, the first heat exchange flow path is configured to enable at least a portion of the first heat exchange flow path to form a heat exchange loop with the internal heat exchange flow channel when the third switching mechanism is switched to a connected state.

[0019] In this embodiment, by switching operation of the third switching mechanism, the internal heat exchange flow path is connected to the first heat exchange flow path via the third switching mechanism, so that at least part of the first heat exchange flow path and the internal heat exchange flow path form a circulation loop of the heat exchange medium, and when the compression refrigeration circulation loop is started, the heat exchange between the refrigerant circulating in the compression refrigeration circulation loop and the heat exchange medium flowing through the internal heat exchange flow path is used to provide the cooling capacity generated by the compression refrigeration circulation loop to the first heat exchange flow path. Since the compression refrigeration circulation loop can achieve a higher cooling efficiency, the cooling capacity transferred to the first heat exchange flow path can effectively reduce the temperature of the heat exchange medium flowing in the first heat exchange flow path, improve the cooling capacity of the circuit where the first heat exchange flow path is located, and help improve the thermal management efficiency achieved by the first heat exchange flow path.

[0020] In some embodiments, the third switching mechanism and the first switching mechanism are respectively implemented by switching valves, or the third switching mechanism and the first switching mechanism are connected to form a three-way valve.

[0021] In this embodiment, for the third switching mechanism and the first switching mechanism that are interconnected, they can be implemented by switching valves respectively, which can improve the control independence of each switching mechanism and facilitate maintenance; they can also be implemented together by a three-way valve, which is conducive to simplifying the pipeline layout to save space and cost, and is conducive to simplifying the control logic and improving control reliability.

[0022] In some embodiments, the thermal management system also includes a third heat exchange flow path, the third heat exchange flow path also includes a third heat exchanger, the third heat exchange flow path is connected in parallel with the second heat exchange flow path, and is connected to the first heat exchange flow path through a first switching mechanism, and the first switching mechanism is configured to be suitable for performing a switching operation to connect the third heat exchange flow path with the first heat exchange flow path via the first switching mechanism, or to disconnect the connection between the third heat exchange flow path and the first heat exchange flow path via the first switching mechanism.

[0023] In this embodiment, the third heat exchange flow path including the third heat exchanger is connected in parallel with the second heat exchange flow path, and is connected to the first heat exchange flow path through the first switching mechanism, so that different heat exchange medium circulation loops can be formed according to different thermal management requirements through the switching operation of the first switching mechanism.

[0024] In some embodiments, the first heat exchange flow path is configured so that when the first switching mechanism is switched to a connecting state, at least a portion of the first heat exchange flow path forms a heat exchange loop with the third heat exchange flow path.

[0025] When the first switching mechanism is switched to a connected state, the third heat exchange path is connected to the first heat exchange path via the first switching mechanism, so that the heat exchange medium in the first heat exchange path can flow into the third heat exchange path to exchange heat through the third heat exchanger, thereby forming another circulation loop including at least part of the first heat exchange path and the third heat exchange path (or also including the second heat exchange path) to meet the thermal management requirements of the battery device and the charging connector.

[0026] In some embodiments, the thermal management system also includes a compression refrigeration cycle circuit and a third switching mechanism. The compression refrigeration cycle circuit includes a condenser and an evaporator. The evaporator has an internal heat exchange flow path. The internal heat exchange flow path is connected to the first heat exchange flow path through the third switching mechanism. The thermal management system also includes a fan, which acts on the condenser and the third heat exchanger.

[0027] In this embodiment, the compression refrigeration cycle and the third heat exchange flow path can provide different degrees of cooling capacity, and the energy consumed is also different. Under different working conditions, the switching operations of the first switching mechanism and the third switching mechanism are actually performed to meet the needs of improving thermal management efficiency or reducing energy consumption, thereby improving the adaptability of the thermal management system to working conditions.

[0028] In some embodiments, the thermal management system also includes a second switching mechanism, one end of the cold storage flow path is connected to the first heat exchange flow path through the second switching mechanism, and the second switching mechanism is configured to perform a switching operation to connect the cold storage flow path with the first heat exchange flow path via the second switching mechanism, or to disconnect the connection between the cold storage flow path and the first heat exchange flow path via the second switching mechanism.

[0029] In this embodiment, the cold storage flow path including the cold storage container is connected to the first heat exchange flow path through the second switching mechanism, so that the cold storage container can accumulate cold energy, so as to meet the cooling needs by releasing cold energy in scenarios where thermal management needs such as rapid cooling are required, such as battery devices, thereby improving the reliability of the charging system operation and reducing system energy consumption.

[0030] In some embodiments, the first heat exchange flow path also includes a first pump, the thermal management system also includes a heat exchange bypass and a fourth switching mechanism, the first heat exchanger is connected in parallel with the heat exchange bypass, one end of the heat exchange bypass is connected to the inlet of the first pump, and the other end of the heat exchange bypass is connected to the first heat exchange flow path through the fourth switching mechanism, and the fourth switching mechanism is configured to be suitable for performing a switching operation to connect the heat exchange bypass to the first heat exchange flow path via the fourth switching mechanism, or to disconnect the connection between the heat exchange bypass and the first heat exchange flow path via the fourth switching mechanism.

[0031] In this embodiment, the first pump can drive the first heat exchange flow path to flow, and a circulation loop can be formed when the first heat exchange flow path is connected to other flow paths. One end of the heat exchange bypass is connected to the inlet of the first pump. When the fourth switching mechanism is switched to connect the heat exchange bypass to the first heat exchange flow path via the fourth switching mechanism, the first pump can drive the heat exchange medium to pass through the heat exchange bypass, so as to meet the needs of reducing flow resistance and simplifying the circulation loop under some working conditions.

[0032] In some embodiments, the cold storage flow path is configured so that when the second switching mechanism and the fourth switching mechanism are both switched to a connected state, the portion of the flow path in the first heat exchange flow path that does not include the first heat exchanger forms a heat exchange circuit with the cold storage flow path and the heat exchange bypass; or when the second switching mechanism is switched to a connected state and the fourth switching mechanism is switched to a disconnected state, the portion of the flow path in the first heat exchange flow path that includes the first heat exchanger forms a heat exchange circuit with the cold storage flow path.

[0033] In this embodiment, according to the switching operation of the second switching mechanism and the fourth switching mechanism, the circulation loop where the cold storage flow path is located can flow through or bypass the first heat exchanger to meet different thermal management requirements.

[0034] In some embodiments, the first switching mechanism, the second switching mechanism, and the fourth switching mechanism respectively include switching valves, or the first switching mechanism, the second switching mechanism, and the fourth switching mechanism are sequentially connected to form a four-way valve.

[0035] In this embodiment, for the first switching mechanism, the second switching mechanism and the fourth switching mechanism that are interconnected, they can be realized by switching valves respectively, which can improve the control independence of each switching mechanism and facilitate maintenance; they can also realize the switching function together through a four-way valve, which is conducive to simplifying the pipeline layout to save space and cost, and is conducive to simplifying the control logic and improving control reliability.

[0036] In some embodiments, the thermal management system also includes a compression refrigeration cycle circuit and a third switching mechanism. The compression refrigeration cycle circuit includes an evaporator. The evaporator has an internal heat exchange flow path. The internal heat exchange flow path is connected to the first heat exchange flow path through the third switching mechanism. The first switching mechanism, the second switching mechanism, the third switching mechanism and the fourth switching mechanism are all switching valves, or the first switching mechanism, the second switching mechanism, the third switching mechanism and the fourth switching mechanism are connected in sequence to form a three-way valve or a four-way valve.

[0037] In this embodiment, for the first switching mechanism, the second switching mechanism, the third switching mechanism and the fourth switching mechanism that are interconnected, they can be implemented by switching valves respectively, which can improve the control independence of each switching mechanism and facilitate maintenance; they can also jointly realize the switching function through a three-way valve or a four-way valve, which is conducive to simplifying the pipeline layout to save space and cost, and is conducive to simplifying the control logic and improving control reliability.

[0038] In some embodiments, the first heat exchange flow path and the second heat exchange flow path are two independent flow paths, and the thermal management system also includes a second switching mechanism, one end of the cold storage flow path is connected to the first heat exchange flow path through the second switching mechanism, and the second switching mechanism is configured to be suitable for performing a switching operation to connect the cold storage flow path with the first heat exchange flow path via the second switching mechanism, or to disconnect the connection between the cold storage flow path and the first heat exchange flow path via the second switching mechanism.

[0039] When discharging at a low current, the second switching mechanism switches to a state where the cold storage flow path is connected to the first heat exchange flow path to store cold energy, thereby reducing the waste of excessive cold energy. When discharging at a high current, the cold storage flow path releases cold energy to the first heat exchange flow path to reduce the additional cold energy required by the first heat exchange flow path, thereby saving energy consumption and improving the reliability of the charging system operation.

[0040] In some embodiments, the thermal management system also includes a compression refrigeration cycle circuit and a third switching mechanism. The compression refrigeration cycle circuit includes an evaporator. The evaporator has an internal heat exchange flow path. The internal heat exchange flow path is connected to the first heat exchange flow path through a third switching mechanism, so that through the switching operation of the third switching mechanism, the internal heat exchange flow path is connected to the first heat exchange flow path via the third switching mechanism, or the connection relationship between the internal heat exchange flow path and the first heat exchange flow path via the third switching mechanism is disconnected.

[0041] In this embodiment, through the switching operation of the third switching mechanism, the internal heat exchange flow path is connected with the first heat exchange flow path via the third switching mechanism, or the connection relationship between the internal heat exchange flow path and the first heat exchange flow path via the third switching mechanism is disconnected, so that the compression refrigeration cycle can be used to improve the thermal management efficiency of the first heat exchange flow path, and through the switching operation of the third switching mechanism, different heat exchange medium circulation loops can be formed, such as the cold storage flow path forms a separate circulation flow path with the internal heat exchange flow path through part of the first heat exchange flow path, and the cold storage flow path can also be disconnected from the first heat exchange flow path, and the first heat exchange flow path and the internal heat exchange flow path form a separate circulation flow, thereby improving the configuration flexibility for different thermal management requirements.

[0042] In some embodiments, the first heat exchange flow path is configured to enable at least a portion of the first heat exchange flow path to form a heat exchange loop with the internal heat exchange flow channel when the third switching mechanism is switched to a connected state.

[0043] In this embodiment, by switching operation of the third switching mechanism, the internal heat exchange flow path is connected to the first heat exchange flow path via the third switching mechanism, so that at least part of the first heat exchange flow path and the internal heat exchange flow path form a circulation loop of the heat exchange medium, and when the compression refrigeration circulation loop is started, the heat exchange between the refrigerant circulating in the compression refrigeration circulation loop and the heat exchange medium flowing through the internal heat exchange flow path is used to provide the cold energy generated by the compression refrigeration circulation loop to the first heat exchange flow path. Since the compression refrigeration circulation loop can achieve a higher refrigeration efficiency, the cold energy transferred to the first heat exchange flow path can effectively reduce the temperature of the heat exchange medium flowing in the first heat exchange flow path, improve the cooling capacity of the circuit where the first heat exchange flow path is located, and help improve the thermal management efficiency achieved by the first heat exchange flow path; at the same time, the cold storage flow can selectively release the cold energy to the first heat exchange flow path according to the heat exchange demand of the first heat exchange flow path by disconnecting or connecting with the first heat exchange flow path, and adjust the temperature of the first heat exchange flow path to meet the needs of the charging system under different discharge currents, so that the charging system can operate more stably.

[0044] In some embodiments, the first heat exchange flow path and the second heat exchange flow path are two independent flow paths, and the thermal management system further includes a second switching mechanism, and the cold storage flow path is connected to the first heat exchange flow path through the second switching mechanism, so that through the switching operation of the second switching mechanism, the cold storage flow path is connected to the first heat exchange flow path through the second switching mechanism, or the connection relationship between the cold storage flow path and the first heat exchange flow path through the second switching mechanism is disconnected;

[0045] The thermal management system further includes a compression refrigeration cycle and a third switching mechanism, the compression refrigeration cycle including an evaporator, the evaporator having an internal heat exchange flow path, the internal heat exchange flow path and the first heat exchange flow path being connected via the third switching mechanism, the third switching mechanism being configured to perform a switching operation so that the internal heat exchange flow path is connected to the first heat exchange flow path via the third switching mechanism, or disconnecting the connection relationship between the internal heat exchange flow path and the first heat exchange flow path via the third switching mechanism;

[0046] The second switching mechanism and the third switching mechanism both include a switching valve, the second switching mechanism is connected in series with the cold storage container to form a first branch, the third switching mechanism is connected in series with the first heat exchanger to form a second branch, the first branch is connected in parallel with the second branch, or the second switching mechanism and the third switching mechanism are connected to form a three-way valve.

[0047] During the high current discharge process, the second switching mechanism switches the cold storage flow path to a state connected to the first heat exchange flow path, so that the cold storage flow releases cold energy to the first heat exchange flow path, and at the same time, the third switching mechanism switches the heat exchange flow path to a state connected to the first heat exchange flow path, so that the first heat exchanger cools the battery device; in the cold storage mode, the third switching mechanism switches the heat exchange flow path to a state disconnected from the first heat exchange flow path, and the internal heat exchange flow path is connected to the cold storage container, so that the refrigerant passes through the cold storage container, and the phase change component in the cold storage container absorbs cold energy. Therefore, through the operation of the second switching mechanism and the third switching mechanism, operation in different modes can be achieved, and the temperature of the battery device can be appropriately adjusted under different charging conditions, making the operation of the charging system more reliable and stable.

[0048] In some embodiments, the first heat exchange flow path further includes a first pump, and the first pump is used to transport heat exchange medium to the first heat exchanger and / or the cold storage flow path.

[0049] The first pump can deliver cold energy to the cold storage device and / or the first heat exchanger in different modes to form different circulation flow paths, so as to meet different circulation requirements under different working conditions.

[0050] In some embodiments, the thermal management system further includes a third heat exchange flow path, the third heat exchange flow path includes a third heat exchanger, and the third heat exchange flow path is connected in series with the second heat exchange flow path.

[0051] By connecting the third heat exchange flow path in series with the second heat exchange flow path, a cooling circulation flow path for the charging connector is formed. The third heat exchanger is used to dissipate heat, which can provide continuous cooling for the charging connector, so as to continuously cool the charging connector during the charging process, thereby improving the reliability and safety of charging.

[0052] In some embodiments, the thermal management system also includes a compression refrigeration cycle circuit and a third switching mechanism. The compression refrigeration cycle circuit includes a condenser and an evaporator. The evaporator has an internal heat exchange flow path. The internal heat exchange flow path is connected to the first heat exchange flow path through the third switching mechanism. The thermal management system also includes a fan, which acts on the condenser and the third heat exchanger.

[0053] In this embodiment, the compression refrigeration cycle and the third heat exchange flow path can provide different degrees of cooling capacity, and the energy consumed is also different. Under different working conditions, the switching operations of the first switching mechanism and the third switching mechanism are actually performed to meet the needs of improving thermal management efficiency or reducing energy consumption, thereby improving the adaptability of the thermal management system to working conditions. The condenser and the third heat exchanger share a fan for heat dissipation, which can reduce the number of fans used and save costs.

[0054] In some embodiments, the third heat exchanger comprises a free cooling heat exchanger.

[0055] In this embodiment, a natural cooling heat exchanger is arranged in the third heat exchange flow path, which can participate in the natural heat exchange between the heat exchange medium in the thermal management system and the outside in some working modes of the thermal management system, which is beneficial to further reduce the energy consumption of the system.

[0056] In some embodiments, the first heat exchange flow path further includes a heater, and the heater is configured to heat the heat exchange medium flowing through the heater when a heating function is turned on.

[0057] In this embodiment, by using the heater to heat the heat exchange medium, when the temperature of the battery device is relatively low, the temperature of the battery device can be increased through the first heat exchanger.

[0058] In some embodiments, the second heat exchange flow path further includes a second pump.

[0059] In this embodiment, by providing a second pump in the second heat exchange flow path, the second heat exchange flow path can realize active driving of the heat exchange medium, so as to form a circulation loop with other heat exchange flow paths as needed to meet the cooling requirements of the charging connector.

[0060] In some embodiments, the charging system further comprises:

[0061] a first power conversion module connected to the battery device and performing heat exchange with the first heat exchanger; and / or

[0062] The second power conversion module is connected to the charging connector and performs heat exchange with the second heat exchanger.

[0063] In this embodiment, either the first power conversion module or the second power conversion module will generate heat during operation. Through the heat exchange between the first heat exchanger and the first power conversion module, and through the heat exchange between the second heat exchanger and the second power conversion module, they can achieve a longer operating time and service life.

[0064] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0066] Figure 1 is a schematic diagram of the structure of some embodiments of the charging system according to the present disclosure;

[0067] Figure 2 is a schematic structural diagram of a thermal management system according to a first embodiment of a charging system of the present disclosure;

[0068] Figure 3A is a schematic structural diagram of a thermal management system according to a second embodiment of a charging system of the present disclosure;

[0069] Figure 3B yes Figure 3A A schematic diagram of the structure of a switching mechanism using a three-way valve in the embodiment shown;

[0070] Figure 4A is a schematic structural diagram of a thermal management system according to a third embodiment of a charging system of the present disclosure;

[0071] Figure 4B yes Figure 4A A schematic diagram of the structure of a switching mechanism using a three-way valve in the embodiment shown;

[0072] Figure 5A is a schematic structural diagram of a thermal management system according to a fourth embodiment of a charging system of the present disclosure;

[0073] Figure 5B yes Figure 5A A schematic diagram of the structure of a switching mechanism using a four-way valve in the embodiment shown;

[0074] Fig. 6Ais a schematic structural diagram of a thermal management system according to a fifth embodiment of a charging system of the present disclosure;

[0075] Figure 6B yes Fig. 6A A schematic diagram of the structure of the switching mechanism using a three-way valve and a four-way valve in the embodiment shown;

[0076] Fig. 7A is a schematic structural diagram of a thermal management system in a sixth embodiment of a charging system according to the present disclosure;

[0077] Figure 7B yes Fig. 7A A schematic diagram of the structure of the switching mechanism using a three-way valve and a four-way valve in the embodiment shown;

[0078] Fig. 8A is a schematic structural diagram of a thermal management system according to a seventh embodiment of a charging system of the present disclosure;

[0079] Figure 8B is a schematic structural diagram of a thermal management system according to an eighth embodiment of a charging system of the present disclosure;

[0080] Fig.9A is a structural diagram of the connection between the cold storage container and the phase change component in the thermal management system according to the first embodiment of the charging system of the present disclosure;

[0081] Fig. 9B It is a structural diagram of the connection between the cold storage container and the phase change component in the thermal management system in the first embodiment of the charging system according to the present disclosure.

[0082] The reference numerals in the specific implementation manner are as follows:

[0083] 10. Battery device; 11. First power conversion module;

[0084] 20. Charging connector; 21. Second power conversion module;

[0085] 30. thermal management system; 31. first heat exchange flow path; 311. first heat exchanger; 312. heater; 313. first pump; 32. second heat exchange flow path; 321. second heat exchanger; 322. second pump;

[0086] 331, first switching mechanism; 332, second switching mechanism; 333, third switching mechanism; 334, fourth switching mechanism;

[0087] 34, cold storage flow path; 341, cold storage container; 342, phase change component; 3421, heat conduction shell; 34211, inner wall; 34212, outer wall; 3422, phase change layer;

[0088] 35. Compression refrigeration cycle; 351. Compressor; 352. Condenser; 353. Throttling device; 354. Evaporator; 3541. Internal heat exchange flow channel;

[0089] 36. third heat exchange flow path; 361. third heat exchanger; 3611. natural cooling heat exchanger;

[0090] 37. Fan; 38. Heat exchange bypass. DETAILED DESCRIPTION

[0091] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0092] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0093] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0094] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0095] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0096] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0097] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0098] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0099] In some related technologies, the charging station can convert the electric energy of the power grid and charge the power battery of the electric vehicle. Considering that the temperature of each charging pile and charging gun of the charging station increases during operation, in order to improve their reliability and life, a liquid cooling system that can exchange heat with the refrigeration system is set to cool the charging pile and charging gun. Some related technologies can also use the liquid cooling system of the charging station to cool the power battery of the electric vehicle during the charging process.

[0100] Research has found that the thermal management systems of related technologies are mainly aimed at the thermal management of charging piles in ordinary charging stations or the thermal management of charging piles and power batteries. For charging stations that include battery devices, there is still a lack of solutions to achieve effective thermal management of charging guns and battery devices.

[0101] In view of this, an embodiment of the present disclosure provides a charging system that can effectively meet the thermal management requirements of the charging connector and the battery device while realizing the charging of the power battery of the device to be charged.

[0102] In this embodiment, the charging system has a charging connector and a battery device, which can store energy through the battery device when the power demand or electricity price is low, and can be used to charge the power battery when the power demand or electricity price is high, thereby reducing the operating cost of the charging system and reducing the burden on the power grid. For this charging system, a first heat exchange flow path and a second heat exchange flow path are set to respectively exchange heat between the battery device and the charging connector through the first heat exchanger and the second heat exchanger, so as to effectively meet the thermal management requirements of the charging connector and the battery device; at the same time, the phase change component in the cold storage container can be used to store and release cold energy according to different requirements. The cold storage container can store cold energy according to the needs of the charging system itself, such as when the charging system is not discharging a large current, and can release cold energy when discharging a large current. The phase change component in the cold storage container can adjust the liquid supply temperature of the first heat exchange flow path according to different discharge conditions of the charging system, so that the liquid supply temperature is more stable and energy consumption can be reduced.

[0103] In the embodiments of the present disclosure, a battery device refers to a single physical module including one or more battery cells to provide higher voltage and capacity. A battery cell is the smallest unit that makes up a battery. A battery cell includes an electrode assembly that can undergo an electrochemical reaction. A battery cell can be a secondary battery, which refers to a battery cell that can be used continuously by activating the active material after the battery cell is discharged by charging.

[0104] The battery cells may be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., but the embodiments of the present disclosure are not limited thereto.

[0105] In some embodiments, the battery device may include a housing and battery cells, and the battery cells are contained in the housing. The housing may be made of metal, non-metal or a mixed material. A plurality of battery cells may be arranged along at least one of the length direction and the width direction of the housing. At least one row or column of battery cells may be provided as required. As required, one or more layers of battery cells may also be provided in the height direction of the battery device.

[0106] Each battery cell is electrically connected, such as in series, parallel or hybrid, to achieve the required electrical performance parameters of the battery device. Hybrid means that multiple battery cells are both connected in series and in parallel. Adjacent battery cells can be electrically connected through bus bars. Multiple battery cells are arranged in rows, and one or more rows of battery cells can be arranged in the box as needed. The box can be made of metal, non-metal or mixed materials.

[0107] In some embodiments, the battery device may include a box and a battery module, wherein the box is used to provide a storage space for the battery module, and the battery module is installed in the box. A plurality of battery cells may be connected in series, in parallel, or in a mixed connection to form a battery module, and then a plurality of battery modules may be connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box.

[0108] In some embodiments, a battery cell comprises: an electrode assembly, a shell and an end cap. The shell has a receiving cavity for receiving the electrode assembly and an open end communicating with the receiving cavity. The end cap covers the open end.

[0109] The electrode assembly may include a first pole piece and a second pole piece with opposite polarities, and also include a separator disposed between the first pole piece and the second pole piece. In some embodiments, the first pole piece is a positive pole piece, and the second pole piece is a negative pole piece. In other embodiments, the first pole piece is a negative pole piece, and the second pole piece is a positive pole piece. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed back and forth between the positive pole piece and the negative pole piece. The separator is disposed between the positive pole piece and the negative pole piece, which can prevent the positive and negative poles from short-circuiting, while allowing active ions to pass through.

[0110] In some embodiments, the positive electrode sheet may include a positive current collector substrate and a positive active material layer disposed on at least one surface of the positive current collector substrate.

[0111] As an example, the positive electrode current collector substrate has two surfaces facing each other in its thickness direction, and the positive electrode active material layer is disposed on any one or both of the two facing surfaces of the positive electrode current collector substrate.

[0112] As an example, the positive electrode current collector substrate may be a metal foil or a composite current collector. For example, as the metal foil, aluminum or stainless steel treated with silver, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by placing a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0113] As an example, the positive electrode active material layer may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present disclosure is not limited to these materials, and other traditional materials that can be used as positive electrode active material layers of batteries may also be used. These positive electrode active material layers may be used alone or in combination of two or more. Among them, examples of lithium-containing phosphates may include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon. Examples of lithium transition metal oxides may include, but are not limited to, lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (such as LiNi 1 / 3 Co 1 / 3Mn 1 / 3 O2 (also referred to as NCM 333 )、LiNi 0.5 Co 0.2 Mn 0.3 O2 (also referred to as NCM 523 )、LiNi 0.5 Co 0.25 Mn 0.25 O2 (also referred to as NCM 211 )、LiNi 0.6 Co 0.2 Mn 0.2 O2 (also referred to as NCM 622 )、LiNi 0.8 Co 0.1 Mn 0.1 O2 (also referred to as NCM 811 ), lithium nickel cobalt aluminum oxide (such as LiNi 0.85 Co 0.15 Al 0.05 O2) and its modified compounds, etc.

[0114] In some embodiments, the negative electrode sheet may include a negative current collector substrate.

[0115] As an example, the negative electrode current collector substrate can be a metal foil, a foamed metal or a composite current collector. For example, as a metal foil, aluminum or stainless steel treated with silver, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. can be used. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by placing a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0116] In some embodiments, the negative electrode sheet may include a negative electrode current collector substrate and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector substrate.

[0117] As an example, the negative electrode current collector substrate has two surfaces facing each other in its thickness direction, and the negative electrode active material layer is disposed on any one or both of the two facing surfaces of the negative electrode current collector substrate.

[0118] As an example, the negative electrode active material layer may adopt a negative electrode active material layer for a battery cell that is well known in the art. As an example, the negative electrode active material layer may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, the present disclosure is not limited to these materials, and other traditional materials that can be used as negative electrode active material layers for batteries may also be used. These negative electrode active material layers may be used alone or in combination of two or more.

[0119] In some embodiments, the material of the positive electrode current collector substrate may be aluminum, and the material of the negative electrode current collector substrate may be copper.

[0120] In some embodiments, the separator is a separator. The present disclosure has no particular limitation on the type of separator, and any known porous separator with good chemical stability and mechanical stability can be selected.

[0121] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component located between the positive electrode sheet and the negative electrode sheet, or it can be located between the positive electrode sheet and the negative electrode sheet and attached to the surface of the positive electrode sheet and / or the surface of the negative electrode sheet.

[0122] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode sheet and the negative electrode sheet and plays the role of transmitting ions and isolating the positive and negative electrodes.

[0123] In some embodiments, the battery cell further includes an electrolyte, which plays a role in conducting ions between the positive and negative electrodes. The present disclosure has no specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0124] As an example, the liquid electrolyte includes an electrolyte salt and a solvent.

[0125] In some embodiments, the electrolyte salt can be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalatoborate, lithium dioxalatoborate, lithium difluorodioxalatophosphate, and lithium tetrafluorooxalatophosphate.

[0126] In some embodiments, the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, cyclopentane, dimethyl sulfone, methyl ethyl sulfone and diethyl sulfone. The solvent can also be selected from ether solvents. Ether solvents can include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyltetrahydrofuran, diphenyl ether and crown ether.

[0127] As an example, the gel electrolyte includes a polymer as the electrolyte skeleton network, combined with an ionic liquid-lithium salt.

[0128] As examples, the solid electrolyte includes a polymer solid electrolyte, an inorganic solid electrolyte, and a composite solid electrolyte.

[0129] As an example, the polymer solid electrolyte may be polyether (polyethylene oxide), polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, a single ion polymer, polyionic liquid-lithium salt, cellulose, and the like.

[0130] As an example, the inorganic solid electrolyte can be one or more of an oxide solid electrolyte (crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON film), a sulfide solid electrolyte (crystalline lithium superion conductor (lithium germanium phosphosulfide, silver germanium sulfide), amorphous sulfide) and a halide solid electrolyte, a nitride solid electrolyte and a hydride solid electrolyte.

[0131] As an example, the composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0132] In some embodiments, the electrode assembly includes a main body. The main body may be a main body of a winding structure formed by winding a positive electrode sheet, a negative electrode sheet, and a separator, or a main body of a stacked structure formed by overlapping a positive electrode sheet, a negative electrode sheet, and a separator. One or more positive electrode sheets and negative electrode sheets may be provided respectively. As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets are alternately provided along the thickness direction of the electrode sheets.

[0133] In some embodiments, the shape of the main body may be cylindrical, flat, or polygonal. The end of the main body may be provided with a first pole ear and a second pole ear. The first pole ear may be formed by cutting or trimming the current collector substrate of the first pole piece, or may be connected to the side of the current collector substrate of the first pole piece by welding. The second pole ear may be formed by cutting or trimming the current collector substrate of the second pole piece, or may be connected to the side of the current collector substrate of the second pole piece by welding.

[0134] For the embodiment in which the first pole piece is a positive pole piece and the second pole piece is a negative pole piece, the first pole piece includes a positive pole piece as a first pole piece, and the second pole piece includes a negative pole piece as a second pole piece. For the embodiment in which the first pole piece is a negative pole piece and the second pole piece is a positive pole piece, the first pole piece includes a negative pole piece as a first pole piece, and the second pole piece includes a positive pole piece as a second pole piece.

[0135] The shell is used to encapsulate the electrode assembly and electrolyte, etc. The shell can be a steel shell, an aluminum shell, a composite metal shell (such as a copper-aluminum composite shell), etc.

[0136] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery.

[0137] A pressure relief component may be provided on the end cover. A pressure relief component refers to an element or component that is actuated to release the internal pressure or temperature when the internal pressure or temperature of the battery cell reaches a predetermined threshold. The threshold design varies according to different design requirements. The threshold may depend on one or more materials of the positive electrode plate, negative electrode plate, electrolyte and isolation membrane in the battery cell. The pressure relief part may take the form of an explosion-proof valve, an air valve, a pressure relief valve or a safety valve, and may specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature of the battery cell reaches a predetermined threshold, the pressure relief part performs an action or a weak structure provided in the pressure relief part is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released.

[0138] When thermal runaway occurs in the electrode assembly, high-temperature and high-pressure gas will enter the pressure relief chamber, and the gas may also contain active substances. When the pressure in the pressure relief chamber exceeds the design threshold, the pressure relief unit releases the internal pressure and discharges the emissions from the battery cells. The emissions from the battery cells mentioned here include but are not limited to: electrolyte, dissolved or split positive and negative pole pieces, fragments of the isolation membrane, high-temperature and high-pressure gas generated by the reaction (such as CH4, CO and other combustible gases), flames, etc.

[0139] Please refer to Figure 1-9B , this embodiment provides a charging system, which includes a battery device 10, a charging connector 20 and a thermal management system 30. The battery device 10 is used to store electrical energy. The charging connector 20 is electrically connected to the battery device 10, and the charging connector 20 is used to charge the device to be charged. The thermal management system 30 includes a first heat exchange flow path 31, a second heat exchange flow path 32 and a cold storage flow path 34. The first heat exchange flow path 31 includes a first heat exchanger 311 for heat exchange with the battery device 10, and the cold storage flow path 34 is connected to the first heat exchange flow path 31 in a switchable connection and disconnection manner. The cold storage flow path 34 includes a cold storage container 341 and a phase change component 342. The cold storage container 341 is configured to be suitable for passing a heat exchange medium. The phase change component 342 is located in the cold storage container 341. The phase change component 342 is used to absorb or release the cold of the heat exchange medium. The second heat exchange flow path 32 includes a second heat exchanger 321 for heat exchange with the charging connector 20.

[0140] The charging system can charge the battery in the charging device. The charging device here can include vehicles, battery cars, ships, aircraft, lighting equipment, electric excavators or electric loaders, etc. New energy vehicles can be pure electric vehicles or hybrid electric vehicles, etc. It can also be other electrical equipment.

[0141] The charging system includes a battery device 10 and a charging connector 20, and can charge the power battery through the charging connector 20, and can also charge the battery device 10. The charging system can be in the form of a charging pile with integrated charging and storage.

[0142] In some embodiments, the charging system may include one or more battery devices 10 and may also include one or more charging connectors 20 .

[0143] The battery device 10 can store and release electric energy in the charging system. It can obtain and store electric energy from the power grid, generator, photovoltaic power generation equipment, wind power generation equipment, etc. When the charging device needs to charge its power battery in the charging system, the battery device 10 can be used as one of the sources of electric energy. In addition to charging the power battery, the battery device 10 can also supply power to other loads. The specific structure of the battery device 10 can refer to the previous description of the battery device and the battery cell, which will not be repeated here.

[0144] The charging connector 20 can be connected to the power interface of the device to be charged when the power battery needs to be charged, and disconnected from the power interface of the device to be charged when charging is finished. The charging connector 20 can also be called a charging gun, and its structure can match the power interface of the device to be charged so as to charge stably and reliably. The charging connector 20 can charge the power battery of the device to be charged with electric energy from any one or a combination of the power grid, the power source and the battery device 10.

[0145] The thermal management system 30 can be used to perform thermal management on the battery device 10 and the charging connector 20, for example, to cool or heat the battery device 10, cool the charging connector 20, etc. The thermal management system 30 can be connected to the battery device 10 and the charging connector 20 to achieve thermal management of the battery device 10 and the charging connector 20.

[0146] The heat exchange medium running in the first heat exchange flow path 31 and the second heat exchange flow path 32 can be liquid, such as water, aqueous coolant or anhydrous coolant, etc., but is not limited to liquid, and can also be gas, solid-liquid mixture or gas-liquid mixture, etc.

[0147] The first heat exchanger 311 is disposed in the first heat exchange flow path 31, and the heat exchange medium exchanges heat with the battery device 10 in the first heat exchanger 311. The first heat exchanger 311 can transfer heat with the battery device 10 by, but not limited to, heat conduction. For example, the first heat exchanger 311 may include a cooling plate in contact with the battery device 10. The cooling plate may be independent of the battery device 10, or may be a part of the battery device 10, for example, disposed at the bottom of the battery box or between each battery cell in the battery module.

[0148] The second heat exchanger 321 is disposed in the second heat exchange flow path 32, and the heat exchange medium exchanges heat with the charging connector 20 in the second heat exchanger 321. The second heat exchanger 321 can transfer heat with the charging connector 20 by means of, but not limited to, heat conduction. For example, the second heat exchanger 321 may include a cooling plate in contact with the charging connector 20. The cooling plate may be independent of the charging connector 20, or may be a part of the charging connector 20.

[0149] The phase change component 342 is located in the cold storage container 341 and can be Fig.9A and Fig. 9B The structure shown. Fig. 9B In the embodiment, the container wall of the cold storage container 341 is a wall body with an interlayer, that is, the cold storage container 341 has an inner wall body 34211 and an outer wall body 34212, and the phase change component 342 includes a phase change layer 3422, and the phase change layer 3422 is filled between the outer wall body 34212 and the inner wall body 34211, and the outer wall body 34212 and the inner wall body 34211 are used to encapsulate the phase change layer 3422. Fig.9A In the embodiment, the cold storage container 341 has a cavity, the phase change component 342 is located in the cavity, and together with the cavity wall of the cavity of the cold storage container 341 defines an accommodation space for accommodating a heat exchange medium.

[0150] In this embodiment, the charging system has a charging connector 20 and a battery device 10, which can store energy through the battery device 10 when the power demand or electricity price is low, and be used to charge the power battery when the power demand or electricity price is high, thereby reducing the operating cost of the charging system and reducing the burden on the power grid. For this charging system, a first heat exchange path 31 and a second heat exchange path 32 are provided to respectively perform heat exchange between the battery device 10 and the charging connector 20 through the first heat exchanger 311 and the second heat exchanger 321, so as to effectively meet the thermal management requirements of the charging connector 20 and the battery device 10; at the same time, the phase change component 342 in the cold storage container 341 can be used to store and release cold energy according to different requirements. The cold storage container 341 can store cold energy according to the needs of the charging system itself, such as when the charging system is not performing a large current discharge, and can release cold energy when performing a large current discharge. The phase change component 342 in the cold storage container 341 can adjust the liquid supply temperature of the first heat exchange path 31 according to different discharge conditions of the charging system, so that the liquid supply temperature is more stable and can reduce energy consumption.

[0151] In some embodiments, the phase change component 342 includes a heat-conducting housing 3421 and a phase change layer 3422 . The heat-conducting housing 3421 has a closed accommodating cavity filled with the phase change layer 3422 .

[0152] The material of the phase change layer 3422 may be hydrated salt, paraffin, fatty acid, sugar alcohol or eutectic salt solution, etc. For example, the phase change layer 3422 may be modified sodium sulfate, and the phase change temperature is controlled at about 10°C.

[0153] The shape of the heat-conducting shell 3421 can be, but is not limited to, a hollow sphere, a hollow cube, or a tube, and can be specifically designed according to actual needs.

[0154] For example, the heat-conducting shell 3421 can be a hollow sphere, and the phase change layer 3422 is filled inside the hollow sphere to form a phase change component 342, and the phase change component 342 is placed in the cavity of the cold storage container 341. There are multiple phase change components 342, and multiple phase change components 342 are placed in the cavity of the cold storage container 341 in a point contact manner, which can increase the contact area between the phase change component 342 and the cold storage component to increase the cold storage capacity.

[0155] The heat-conducting shell 3421 isolates the phase change layer 3422 from the heat exchange medium. Especially under the influence of ambient temperature, the phase change layer 3422 may undergo a phase change (solid-liquid transition). The setting of the shell can reduce the mixing of the phase change layer 3422 into the cold storage container 341. At the same time, the liquid can reduce the reaction between the phase change layer 3422 and the heat exchange medium, so that the phase change component 342 can absorb and release cold more reliably.

[0156] In some embodiments, there are multiple phase change components 342 , and the multiple phase change components 342 are arranged at intervals.

[0157] The spacing direction between two adjacent phase change components 342 may be in any direction and is not specifically limited here.

[0158] As an example, the phase change component 342 may be a tubular structure, and a plurality of tubular structures are arranged parallel to each other and at intervals. The phase change component 342 may also be an annular structure, and a plurality of phase change components 342 may be arranged at intervals along the height direction of the cold storage container 341 .

[0159] The multiple phase change components 342 are arranged at intervals, so that the heat exchange medium can fully contact the phase change components 342 to absorb or release more cold energy.

[0160] In some embodiments, the thermal management system 30 also includes a first switching mechanism 331, and the second heat exchange flow path 32 is connected to the first heat exchange flow path 31 through the first switching mechanism 331. The first switching mechanism 331 is configured to be suitable for performing a switching operation to connect the second heat exchange flow path 32 with the first heat exchange flow path 31 via the first switching mechanism 331, or to disconnect the connection between the second heat exchange flow path 32 and the first heat exchange flow path 31 via the first switching mechanism 331.

[0161] The first switching mechanism 331 may include a valve capable of controlling on and off, and may also include a connecting flow path connecting the second heat exchange flow path 32 and the first heat exchange flow path 31. The valve may be disposed at a connection position between the connecting flow path and any one of the second heat exchange flow path 32 and the first heat exchange flow path 31, or may be disposed within the connecting flow path. Figure 2 In the embodiment, both ends of the second heat exchange flow path 32 and both ends of the first heat exchange flow path 31 are connected through the first switching mechanism 331. In other embodiments, only one end of the second heat exchange flow path 32 and one end of the first heat exchange flow path 31 may be connected through the first switching mechanism 331.

[0162] The first switching mechanism connects or disconnects the second heat exchange flow path with the first heat exchange flow path, and can form different heat exchange flow paths, so as to effectively meet the thermal management requirements of the charging connector and the battery device, and improve the flexibility of the thermal management requirement configuration.

[0163] In some embodiments, Figure 3A Schematic diagram of the structure of the thermal management system in the second embodiment of the charging system according to the present disclosure. Figure 3B yes Figure 3A The schematic diagram of the structure of the switching mechanism using a three-way valve in the embodiment shown. Figure 3A In some embodiments, the thermal management system 30 also includes a compression refrigeration cycle loop 35 and a third switching mechanism 333. The compression refrigeration cycle loop 35 includes an evaporator 354. The evaporator 354 has an internal heat exchange channel 3541. The internal heat exchange channel 3541 is connected to the first heat exchange channel 31 through the third switching mechanism 333. The third switching mechanism 333 is configured to be suitable for performing a switching operation to connect the internal heat exchange channel 3541 to the first heat exchange channel 31 via the third switching mechanism 333, or to disconnect the connection between the internal heat exchange channel 3541 and the first heat exchange channel 31 via the third switching mechanism 333.

[0164] The compression refrigeration circulation loop 35 can realize the circulation of the refrigerant fluid, and realize heat transfer through condensation and evaporation of the refrigerant fluid. The refrigerant may include but is not limited to water, ammonia, carbon dioxide, halogenated hydrocarbon refrigerants, etc. The refrigerant in the compression refrigeration circulation loop 35 is independent of the operation of the heat exchange medium in the first heat exchange flow path 31 and the internal heat exchange flow channel 3541, and the refrigerant fluid realizes heat transfer through heat exchange with the heat exchange medium.

[0165] The internal heat exchange channel 3541 is connected to the first heat exchange channel 31 through the third switching mechanism 333. When the third switching mechanism 333 is switched to the connected state, the heat exchange medium in the first heat exchange channel 31 can enter the internal heat exchange channel 3541 to achieve heat exchange with the refrigerant running in the evaporator 354 in the compression refrigeration cycle 35. In this way, the first heat exchange channel 31 receives the cold from the compression refrigeration cycle 35 to cool the flowing heat exchange medium. Figure 3A In the figure, the internal heat exchange channel 3541 of the evaporator 354 and the part of the compression refrigeration cycle 35 passing through the evaporator 354 are shown by the dotted line drawn in the evaporator 354. The evaporator 354 can be a plate exchange evaporator or other forms of evaporators, such as a shell and tube evaporator.

[0166] exist Figure 3A In the embodiment, the compression refrigeration cycle 35 may further include a compressor 351, a condenser 352 and a throttling device 353. The compressor 351 can compress the sucked low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The condenser 352 can cool the high-temperature and high-pressure gaseous refrigerant output by the compressor 351 by releasing heat and at least partially convert it into a liquid state. The throttling device 353 may include a capillary tube, a thermal expansion valve or an electronic expansion valve, which can reduce the temperature and pressure of the refrigerant output by the condenser 352 by throttling. The evaporator 354 can heat up the refrigerant passing through the throttling device 353 by absorbing heat and at least partially convert it into a gaseous state. The compression refrigeration cycle 35 may further include other components, such as a gas-liquid separator for gas-liquid separation of the refrigerant output by the evaporator 354, an oil separator for oil-gas separation of the refrigerant discharged by the compressor 351, etc., which will not be repeated here.

[0167] In this embodiment, through the switching operation of the third switching mechanism 333, the internal heat exchange channel 3541 is connected with the first heat exchange channel 31 via the third switching mechanism 333, or the connection relationship between the internal heat exchange channel 3541 and the first heat exchange channel 31 via the third switching mechanism 333 is disconnected, so that the compression refrigeration cycle 35 can be used to improve the thermal management efficiency achieved by the first heat exchange channel 31, and through the switching operation of the third switching mechanism 333, different heat exchange medium circulation loops can be formed, thereby improving the configuration flexibility for different thermal management requirements.

[0168] refer to Figure 3A In some embodiments, the first heat exchange flow path 31 is configured to form a heat exchange loop with at least a portion of the first heat exchange flow path 31 and the internal heat exchange flow channel 3541 when the third switching mechanism 333 is switched to a connected state.

[0169] In this embodiment, by the switching operation of the third switching mechanism 333, the internal heat exchange channel 3541 is connected to the first heat exchange channel 31 via the third switching mechanism 333, so that at least part of the first heat exchange channel 31 and the internal heat exchange channel 3541 form a circulation loop of the heat exchange medium, and when the compression refrigeration circulation loop 35 is started, the heat exchange between the refrigerant circulating in the compression refrigeration circulation loop 35 and the heat exchange medium flowing through the internal heat exchange channel 3541 is used to provide the cooling capacity generated by the compression refrigeration circulation loop 35 to the first heat exchange channel 31. Since the compression refrigeration circulation loop 35 can achieve a high cooling efficiency, the cooling capacity transferred to the first heat exchange channel 31 can effectively reduce the temperature of the heat exchange medium flowing in the first heat exchange channel 31, improve the cooling capacity of the circuit where the first heat exchange channel 31 is located, and help improve the thermal management efficiency achieved by the first heat exchange channel 31.

[0170] refer to Figure 3A and Figure 3B In some embodiments, the third switching mechanism 333 and the first switching mechanism 331 include switching valves respectively; or the third switching mechanism 333 and the first switching mechanism 331 are connected to form a three-way valve.

[0171] exist Figure 3A and Figure 3B In the embodiment, the third switching mechanism 333 may include a valve capable of controlling on and off, and may also include a connecting flow path connecting the internal heat exchange flow path 3541 and the first heat exchange flow path 31. The valve may be disposed at a connection position between the connecting flow path and any one of the internal heat exchange flow path 3541 and the first heat exchange flow path 31, or may be disposed in the connecting flow path. For the third switching mechanism 333 and the first switching mechanism 331 that are interconnected, they may be realized independently by a switching valve, or by the same valve.

[0172] by Figure 3A For example, the third switching mechanism 333 and the first switching mechanism 331 are respectively connected at both ends of the first heat exchange flow path 31, and the third switching mechanism 333 and the first switching mechanism 331 can both use switching valves in the form of electric control, hydraulic control, etc. to achieve the on-off of the flow paths where they are located. In some embodiments, the switching valve is not limited to achieving the on-off of the flow path, and can also adjust the flow rate and flow velocity through the opening when the flow path is connected.

[0173] by Figure 3B For example, the third switching mechanism 333 and the first switching mechanism 331 can be implemented together by a three-way valve. Figure 3BThe three-way valve has three interfaces, which are respectively connected to the first heat exchange flow path 31, the internal heat exchange flow path 3541 and the second heat exchange flow path 32. The three-way valve can disconnect any one of the three interfaces through switching operation, connect any two interfaces, or connect all three interfaces.

[0174] In this embodiment, for the third switching mechanism 333 and the first switching mechanism 331 that are interconnected, they can be implemented by switching valves respectively, which can improve the control independence of each switching mechanism and facilitate maintenance; they can also be implemented together by a three-way valve, which is conducive to simplifying the pipeline layout to save space and cost, and is conducive to simplifying the control logic and improving control reliability.

[0175] Figure 4A Schematic diagram of the structure of the thermal management system in the third embodiment of the charging system according to the present disclosure. Figure 4B yes Figure 4A The schematic diagram of the structure of the switching mechanism using a three-way valve in the embodiment shown. Figure 2 and Figure 4A In some embodiments, the thermal management system 30 also includes a third heat exchange flow path 36, and the third heat exchange flow path 36 also includes a third heat exchanger 361. The third heat exchange flow path 36 is connected in parallel with the second heat exchange flow path 32, and is connected to the first heat exchange flow path 31 through a first switching mechanism 331. The first switching mechanism 331 is configured to be suitable for performing a switching operation to connect the third heat exchange flow path 36 with the first heat exchange flow path 31 via the first switching mechanism 331, or to disconnect the connection between the third heat exchange flow path 36 and the first heat exchange flow path 31 via the first switching mechanism 331.

[0176] exist Figure 2 and Figure 4A In the embodiment, both ends of the third heat exchange flow path 36 are connected to both ends of the second heat exchange flow path 32 to form a parallel connection relationship. The third heat exchange flow path 36 and the second heat exchange flow path 32 are connected to the first heat exchange flow path 31 through the first switching mechanism 331. The first switching mechanism 331 can realize different circulation loops by switching its on or off state.

[0177] When the first switching mechanism 331 is switched to the disconnected state, the second heat exchange path 32 and the third heat exchange path 36 are disconnected from the first heat exchange path 31 via the first switching mechanism 331, thereby forming a heat exchange medium circulation loop independent of the first heat exchange path 31 and including the third heat exchange path 36 and the second heat exchange path 32. This allows the third heat exchanger 361 to meet the thermal management requirements of the charging connector without using the cooling capacity of the heat exchange medium in the first heat exchange path 31, thereby better adapting to the different thermal management requirements of the charging connector 20 and the battery device 10.

[0178] In this embodiment, the third heat exchange path 36 including the third heat exchanger 361 is connected in parallel with the second heat exchange path 32, and is connected to the first heat exchange path 31 through the first switching mechanism 331, so that through the switching operation of the first switching mechanism 331, different heat exchange medium circulation loops can be formed according to different thermal management requirements.

[0179] refer to Figure 2 and Figure 4A In some embodiments, the first heat exchange path 31 is configured to form a heat exchange loop with at least a portion of the first heat exchange path 31 and the third heat exchange path 36 when the first switching mechanism 331 is switched to a connected state.

[0180] When the first switching mechanism 331 switches to a connected state, the third heat exchange path 36 is connected to the first heat exchange path 31 via the first switching mechanism 331, so that the heat exchange medium in the first heat exchange path 31 can flow into the third heat exchange path 36 to exchange heat through the third heat exchanger 361, so that another circulation loop including at least part of the first heat exchange path 31 and the third heat exchange path 36 (or also including the second heat exchange path 32) can be formed to meet the thermal management requirements of the battery device 10 and the charging connector 20.

[0181] refer to Figure 4A In some embodiments, the thermal management system 30 also includes a compression refrigeration cycle loop 35 and a third switching mechanism 333. The compression refrigeration cycle loop 35 includes a condenser 352 and an evaporator 354. The evaporator 354 has an internal heat exchange flow channel 3541. The internal heat exchange flow channel 3541 is connected to the first heat exchange flow channel 31 through the third switching mechanism 333. The thermal management system 30 also includes a fan 37, which acts on the condenser 352 and the third heat exchanger 361.

[0182] The compression refrigeration cycle 35 can provide cooling capacity with higher efficiency to meet higher heat dissipation and cooling requirements. The fan 37 can air-cool the condenser 352 to improve the efficiency of the condenser 352. The fan 37 can include axial flow, centrifugal, mixed flow and other fans. The fan 37 can also be used to guide the airflow in the environment to exchange heat with the third heat exchanger 361 to improve the heat exchange efficiency, and the number of fans 37 can be reduced accordingly, which is conducive to reducing costs and energy consumption.

[0183] In this embodiment, the compression refrigeration cycle 35 and the third heat exchange flow path 36 can provide different degrees of cooling capacity, and the energy consumed is also different. Under different working conditions, the switching operation of the first switching mechanism 331 and the third switching mechanism 333 is performed according to actual conditions to meet the needs of improving thermal management efficiency or reducing energy consumption, thereby improving the adaptability of the thermal management system to working conditions.

[0184] exist Figure 4A and Figure 4B In the embodiment, the third switching mechanism 333 and the first switching mechanism 331 which are interconnected can be realized by switching valves independently or by the same valve.

[0185] by Figure 4A For example, the third switching mechanism 333 and the first switching mechanism 331 are respectively connected at both ends of the first heat exchange flow path 31, and the third switching mechanism 333 and the first switching mechanism 331 can both use switching valves in the form of electric control, hydraulic control, etc. to achieve the on-off of the flow paths where they are located. In some embodiments, the switching valve is not limited to achieving the on-off of the flow path, and can also adjust the flow rate and flow velocity through the opening when the flow path is connected.

[0186] exist Figure 4B In the embodiment, the third switching mechanism 333 and the first switching mechanism 331 can be realized together by a three-way valve. Figure 4B The three-way valve has three interfaces, which are respectively connected to the first heat exchange flow path 31, the internal heat exchange flow path 3541 and the second heat exchange flow path 32. The three-way valve can disconnect any one of the three interfaces through switching operation, connect any two interfaces, or connect all three interfaces.

[0187] Figure 5A Schematic diagram of the structure of a thermal management system in a fourth embodiment of a charging system according to the present disclosure. Figure 5B yes Figure 5A The illustrated embodiment is a schematic structural diagram of a switching mechanism implemented using a four-way valve. Fig. 6A Schematic diagram of the structure of a thermal management system in a fifth embodiment of a charging system according to the present disclosure. Figure 6B yes Fig. 6A The illustrated embodiment is a schematic diagram of a structure in which a three-way valve and a four-way valve are used to implement a switching mechanism.

[0188] refer to Figure 5A and Fig. 6A In some embodiments, the thermal management system 30 further includes a second switching mechanism 332, one end of the cold storage flow path 34 is connected to the first heat exchange flow path 31 through the second switching mechanism 332, and the second switching mechanism 332 is configured to be suitable for performing a switching operation, so that the cold storage flow path 34 is connected to the first heat exchange flow path 31 via the second switching mechanism 332, or the connection relationship between the cold storage flow path 34 and the first heat exchange flow path 31 via the second switching mechanism 332 is disconnected.

[0189] The cold storage flow path 34 is connected to the first heat exchange flow path 31 through the second switching mechanism 332, and the second switching mechanism 332 can switch the connection relationship between the first heat exchange flow path 31 and the second switching mechanism 332. When the cold storage container 341 needs to be used for cold storage or cold release, the cold storage flow path 34 is connected to the first heat exchange flow path 31 through the second switching mechanism 332 through the switching operation of the second switching mechanism 332 to form a heat exchange medium circulation loop including at least part of the first heat exchange flow path 31 and the cold storage flow path 34, so that the heat exchange medium with a lower temperature enters the cold storage container 341 to achieve cold storage, or the heat exchange medium with a lower temperature in the cold storage container 341 is guided into the circulation loop to reduce the temperature of the heat exchange medium in the circulation loop.

[0190] The cold energy in the cold storage container 341 can be provided to the first heat exchange flow path 31 to cool the battery device 10 and the first power conversion module 11, and can also be provided to the second heat exchange flow path 32 to cool the charging connector 20 and the second power conversion module 21.

[0191] For the charging system, the high current discharge time when charging the device to be charged is usually relatively short. In the cycle, the charging and sleep time of the charging system itself accounts for a large proportion. When the battery device 10 is discharging with a large current, the battery device 10 and the first power conversion module 11 may rapidly increase in temperature due to the release of a large amount of energy in a short time, increasing the risk of thermal runaway. By releasing the cold energy of the cold storage container 341 to cool the battery device 10 and the first power conversion module 11, the temperature can be effectively reduced, the reliability and performance of the battery device 10 and the first power conversion module 11 can be improved, and the energy consumed by other parts of the thermal management system that provide cold energy can be effectively reduced.

[0192] For example, for an embodiment in which cooling is provided by a compression refrigeration cycle 35, since the cold storage container 341 provides at least part of the cooling capacity for cooling the battery device 10 and the first power conversion module 11, the operating power of the compressor 351 in the compression refrigeration cycle 35 can be reduced accordingly, thereby reducing the overall cost and operating noise.

[0193] When the battery device 10 and the charging connector 20 are not in operation, for example, during a period of low electricity prices, the cold storage container 341 can enter a cold storage mode to store cold energy. Figure 5A As shown, by switching operation of the first switching mechanism 331 and the second switching mechanism 332, the third heat exchange flow path 36 is connected to the heat exchange medium circulation loop including the cold storage flow path 34, so that the third heat exchanger 361 in the third heat exchange flow path 36 receives the cold in the natural environment and stores it in the cold storage container.

[0194] The process of accumulating cold energy can also be used Fig. 6A As shown, by switching operations of the second switching mechanism 332 and the third switching mechanism 333, the internal heat exchange channel 3541 is connected to the heat exchange medium circulation loop including the cold storage channel 34, so that when the compression refrigeration circulation loop 35 is running, the cold energy is transferred to the heat exchange medium in the internal heat exchange channel 3541 through the evaporator 354, thereby storing the cold energy in the cold storage container 341 through the low-temperature heat exchange medium.

[0195] In this embodiment, the cold storage flow path 34 including the cold storage container 341 is connected to the first heat exchange flow path 31 through the second switching mechanism 332, so that the cold storage container 341 can accumulate cold energy, so as to meet the cooling requirements by releasing cold energy in scenarios where thermal management requirements such as rapid cooling are required, such as the battery device 10, thereby improving the reliability of the charging system operation and reducing the system energy consumption.

[0196] refer to Figure 5A and Fig. 6A In some embodiments, the first heat exchange flow path 31 also includes a first pump 313, the thermal management system 30 also includes a heat exchange bypass 38 and a fourth switching mechanism 334, the first heat exchanger 311 is connected in parallel with the heat exchange bypass 38, one end of the heat exchange bypass 38 is connected to the inlet of the first pump 313, and the other end of the heat exchange bypass 38 is connected to the first heat exchange flow path 31 through the fourth switching mechanism 334, and the fourth switching mechanism 334 is configured to perform a switching operation to connect the heat exchange bypass 38 to the first heat exchange flow path 31 via the fourth switching mechanism 334, or to disconnect the connection between the heat exchange bypass 38 and the first heat exchange flow path 31 via the fourth switching mechanism 334.

[0197] In this embodiment, the first pump 313 can drive the first heat exchange flow path 31 to flow, and a circulation loop can be formed when the first heat exchange flow path 31 is connected to other flow paths. One end of the heat exchange bypass 38 is connected to the inlet of the first pump 313. When the fourth switching mechanism 334 is switched to connect the heat exchange bypass 38 to the first heat exchange flow path 31 via the fourth switching mechanism 334, the first pump 313 can drive the heat exchange medium to pass through the heat exchange bypass 38, so as to meet the needs of reducing flow resistance and simplifying the circulation loop under some working conditions.

[0198] refer to Fig. 6A In some embodiments, the cold storage flow path 34 is configured to form a heat exchange loop with the cold storage flow path 34 and the heat exchange bypass 38, when the second switching mechanism 332 and the fourth switching mechanism 334 are both switched to a connected state; or when the second switching mechanism 332 is switched to a connected state and the fourth switching mechanism 334 is switched to a disconnected state, the cold storage flow path 34 is configured to form a heat exchange loop with the cold storage flow path 34, when the portion of the flow path in the first heat exchange flow path 31 that does not include the first heat exchanger 311.

[0199] exist Figure 5A and Fig. 6A In the embodiment, the heat exchange bypass 38 is connected in parallel with the first heat exchanger 311, and the first pump 313 in the first heat exchange flow path 31 is located outside the heat exchange bypass 38 and the first heat exchanger 311. The second switching mechanism 332 and the fourth switching mechanism 334 can be switched so that both the heat exchange bypass 38 and the cold storage flow path 34 are connected to the first heat exchange flow path 31. At this time, based on the flow resistance of the first heat exchanger 311 or the flow distribution relationship between the heat exchange bypass 38 and the first heat exchanger 311 realized by the fourth switching mechanism 334, a part of the heat exchange medium in the first heat exchange flow path 31 or all of the heat exchange medium can flow through the heat exchange bypass 38, and accordingly reduce or avoid the heat exchange medium from flowing into the first heat exchanger 311.

[0200] Under some working conditions, for example, the current charging process does not use the battery device 10 for discharging, or the cold storage process of the cold storage container 341 is being performed. At this time, the battery device 10 and the first power conversion module 11 do not need further cooling or heating. The heat exchange bypass 38 can be connected through the fourth switching mechanism 334, so that the heat exchange medium at least partially bypasses the first heat exchanger 311. In this way, more heat exchange medium can be used for cooling or cold storage of the charging connector 20, so as to improve the thermal management efficiency, reduce the influence of the battery device 10 on the thermal management process, and help simplify the control logic.

[0201] When thermal management such as cooling or heating is required for the battery device 10 and the first power conversion module 11, the second switching mechanism 332 can be switched to a connected state, and the fourth switching mechanism 334 can be switched to a disconnected state, so that the cold in the cold storage container 341 can pass through the first heat exchanger 311 driven by the first pump 313 to meet the cooling requirements of the battery device 10 and the first power conversion module 11.

[0202] In this embodiment, according to the switching operation of the second switching mechanism 332 and the fourth switching mechanism 334, the circulation loop where the cold storage flow path 34 is located can flow through or bypass the first heat exchanger 311 to meet different thermal management requirements.

[0203] refer to Figure 5A and Figure 5B In some embodiments, the first switching mechanism 331, the second switching mechanism 332 and the fourth switching mechanism 334 respectively include switching valves; or, the first switching mechanism 331, the second switching mechanism 332 and the fourth switching mechanism 334 are connected in sequence to form a four-way valve.

[0204] exist Figure 5AIn the embodiment, one end of the first heat exchange flow path 31 is connected to the third heat exchange flow path 36 through the first switching mechanism 331, and the first switching mechanism 331 can be realized by a switching valve in an electric control, hydraulic control or the like. The other end of the first heat exchange flow path 31 is connected to the first switching mechanism 331, the second switching mechanism 332 and the fourth switching mechanism 334, and the first switching mechanism 331, the second switching mechanism 332 and the fourth switching mechanism 334 can all adopt a switching valve in an electric control, hydraulic control or the like to realize the on-off of the flow paths in which they are located. In some embodiments, the switching valve is not limited to realizing the on-off of the flow path, and can also realize the adjustment of the flow rate and flow velocity through the opening when the flow path is connected.

[0205] exist Figure 5B In the embodiment, the first switching mechanism 331 , the second switching mechanism 332 and the fourth switching mechanism 334 can be realized together by a four-way valve. Figure 5B The four-way valve has four interfaces, which are respectively connected to the first heat exchange flow path 31, the heat exchange bypass 38, the cold storage flow path 34 and the second heat exchange flow path 32 (or the third heat exchange flow path 36). The four-way valve can disconnect any one of the four interfaces through switching operation, connect any two interfaces or any three interfaces, or connect all four interfaces.

[0206] In this embodiment, for the first switching mechanism 331, the second switching mechanism 332 and the fourth switching mechanism 334 that are interconnected, they can be implemented by switching valves respectively, which can improve the control independence of each switching mechanism and facilitate maintenance; they can also be implemented together by a four-way valve, which is conducive to simplifying the pipeline layout to save space and cost, and is conducive to simplifying the control logic and improving control reliability.

[0207] refer to Fig. 6A and Figure 6B In some embodiments, the thermal management system 30 also includes a compression refrigeration cycle loop 35 and a third switching mechanism 333. The compression refrigeration cycle loop 35 includes an evaporator 354. The evaporator 354 has an internal heat exchange flow channel 3541. The internal heat exchange flow channel 3541 is connected to the first heat exchange flow path 31 through the third switching mechanism 333. The first switching mechanism 331, the second switching mechanism 332, the third switching mechanism 333 and the fourth switching mechanism 334 respectively include switching valves, or the first switching mechanism 331, the second switching mechanism 332, the third switching mechanism 333 and the fourth switching mechanism 334 are connected in sequence to form a three-way valve or a four-way valve.

[0208] exist Fig. 6AIn the embodiment, one end of the first heat exchange flow path 31 is connected to the third heat exchange flow path 36 and the internal heat exchange flow channel 3541 through the first switching mechanism 331 and the third switching mechanism 333 respectively. The third switching mechanism 333 and the first switching mechanism 331 that are interconnected can be realized by switching valves independently or by the same valve. The other end of the first heat exchange flow path 31 is connected to the first switching mechanism 331, the second switching mechanism 332, the third switching mechanism 333 and the fourth switching mechanism 334. The first switching mechanism 331, the second switching mechanism 332, the third switching mechanism 333 and the fourth switching mechanism 334 that are interconnected here can all use switching valves in the form of electric control, hydraulic control, etc. to realize the on and off of the flow paths in which they are located. In some embodiments, the switching valve is not limited to realizing the on and off of the flow path, and can also realize the adjustment of flow rate and flow rate through the opening when the flow path is connected.

[0209] exist Figure 6B In the embodiment, the third switching mechanism 333 and the first switching mechanism 331 that are interconnected can be realized together by a three-way valve, and the liquid-passing valve has three interfaces, which are respectively connected to the first heat exchange flow path 31, the internal heat exchange flow path 3541, and the second heat exchange flow path 32. The three-way valve can disconnect any one of the three interfaces through switching operations, realize the connection between any two interfaces, and can also make all three interfaces connected.

[0210] The first switching mechanism 331, the second switching mechanism 332, the third switching mechanism 333 and the fourth switching mechanism 334 are connected in sequence to form a three-way valve or a four-way valve. Figure 6B In the embodiment, the four-way valve has four interfaces, which are respectively connected to the first heat exchange flow path 31, the heat exchange bypass 38, the cold storage flow path 34 and the three-way valve. The three-way valve has three interfaces, which are respectively connected to the four-way valve, the second heat exchange flow path 32 and the internal heat exchange flow path 3541. In other embodiments, the first switching mechanism 331, the second switching mechanism 332, the third switching mechanism 333 and the fourth switching mechanism 334 can also form other multi-way valves, such as a five-way valve.

[0211] In this embodiment, for the first switching mechanism 331, the second switching mechanism 332, the third switching mechanism 333 and the fourth switching mechanism 334 that are interconnected, they can be implemented by switching valves respectively, which can improve the control independence of each switching mechanism and facilitate maintenance; they can also be connected to form a three-way valve or a four-way valve, which is conducive to simplifying the pipeline layout to save space and cost, and is conducive to simplifying the control logic and improving control reliability.

[0212] Please refer to Fig. 8A and Figure 8BIn some embodiments, the first heat exchange flow path 31 and the second heat exchange flow path 32 are two independent flow paths, and the thermal management system 30 also includes a second switching mechanism 332. One end of the cold storage flow path 34 is connected to the first heat exchange flow path 31 through the second switching mechanism 332. The second switching mechanism 332 is configured to be suitable for performing a switching operation to connect the cold storage flow path 34 with the first heat exchange flow path 31 via the second switching mechanism 332, or to disconnect the connection between the cold storage flow path 34 and the first heat exchange flow path 31 via the second switching mechanism 332.

[0213] Two independent flow paths refer to two flow paths that are independent of each other and not connected to each other.

[0214] The second switching mechanism 332 can be implemented by using an electrically controlled or hydraulically controlled switching valve.

[0215] The cold storage flow path 34 can be connected in series in the first heat exchange flow path 31, or can be connected to the first heat exchange flow path 31 in parallel with the first heat exchanger 311; it can also be connected in parallel with a section of the first heat exchange flow path 31, and the second switching mechanism 332 is connected in series in the cold storage flow path 34 to individually control the connection or disconnection of the cold storage flow path 34 and the first heat exchange flow path 31.

[0216] When discharging at a low current, the second switching mechanism 332 switches to a state where the cold storage flow path 34 is connected to the first heat exchange flow path 31 to store cold energy, thereby reducing the waste of excessive cold energy. When discharging at a high current, the cold storage flow path 34 releases cold energy to the first heat exchange flow path 31 to reduce the additional cold energy required by the first heat exchange flow path 31, thereby saving energy consumption and improving the reliability of the charging system operation.

[0217] Please refer to Fig. 8A and Figure 8B In some embodiments, the thermal management system 30 also includes a compression refrigeration cycle loop 35 and a third switching mechanism 333. The compression refrigeration cycle loop 35 includes an evaporator 354. The evaporator 354 has an internal heat exchange channel 3541. The internal heat exchange channel 3541 is connected to the first heat exchange channel 31 through the third switching mechanism 333. The third switching mechanism 333 is configured to be suitable for performing a switching operation to connect the internal heat exchange channel 3541 to the first heat exchange channel 31 via the third switching mechanism 333, or to disconnect the connection between the internal heat exchange channel 3541 and the first heat exchange channel 31 via the third switching mechanism 333.

[0218] The evaporator 354 can form a compression refrigeration cycle 35 with the compressor 351 and the condenser 352. The refrigerant is compressed into a high-temperature and high-pressure refrigerant by the compressor 351, and the refrigerant is released through the condenser 352 to form a low-temperature and low-pressure refrigerant that flows through the evaporator 354 and exchanges heat with the heat exchange medium in the internal heat exchange channel 3541.

[0219] In the two independent flow paths of the first heat exchange flow path 31 and the second heat exchange flow path 32, the cold energy of the evaporator 354 can be sent to the first heat exchange flow path 31 and / or the cold storage container 341 through the switching operation of the third switching mechanism 333, so that the cold energy can be stored or released according to the actual use requirements of the first heat exchange flow path 31 to increase the flexibility of the charging system in adjusting the temperature. At the same time, the second heat exchange flow path 32 and the first heat exchange flow path 31 are two independent flow paths, so that the cold energy of the evaporator 354 can flow to the first heat exchange flow path 31 and / or the cold storage flow path 34 separately, which can reduce the second heat exchange flow path 32 to consume the cold energy of the first heat exchange flow path 31, so that the first heat exchange flow path 31 can store or release more cold energy, so that the first heat exchange flow path 31 can make the temperature adjustment of the battery device by the first heat exchange flow path 31 more flexible and stable. On the other hand, it can reduce the evaporator 354 from releasing too much cold energy to the second heat exchange flow path 32 to save more energy consumption.

[0220] Please refer to Fig. 8A and Figure 8B In some embodiments, the first heat exchange flow path 31 is configured to form a heat exchange loop with at least a portion of the first heat exchange flow path 31 and the internal heat exchange flow channel 3541 when the third switching mechanism 333 is switched to a connected state.

[0221] In this embodiment, by the switching operation of the third switching mechanism 333, the internal heat exchange channel 3541 is connected to the first heat exchange channel 31 via the third switching mechanism 333, so that at least part of the first heat exchange channel 31 and the internal heat exchange channel 3541 form a circulation loop of the heat exchange medium, and when the compression refrigeration circulation loop 35 is started, the heat exchange between the refrigerant circulating in the compression refrigeration circulation loop 35 and the heat exchange medium flowing through the internal heat exchange channel 3541 is used to provide the cooling capacity generated by the compression refrigeration circulation loop 35 to the first heat exchange channel 31. Since the compression refrigeration circulation loop 35 can achieve a high cooling efficiency, the cooling capacity transferred to the first heat exchange channel 31 can effectively reduce the temperature of the heat exchange medium flowing in the first heat exchange channel 31, improve the cooling capacity of the circuit where the first heat exchange channel 31 is located, and help improve the thermal management efficiency achieved by the first heat exchange channel 31.

[0222] Please refer to Fig. 8A and Figure 8BIn some embodiments, the thermal management system 30 further includes a second switching mechanism 332, and one end of the cold storage flow path 34 is connected to the first heat exchange flow path 31 through the second switching mechanism 332, so that through the switching operation of the second switching mechanism 332, the cold storage flow path 34 is connected to the first heat exchange flow path 31 via the second switching mechanism 332, or the connection relationship between the cold storage flow path 34 and the first heat exchange flow path 31 via the second switching mechanism 332 is disconnected. The thermal management system 30 further includes a compression refrigeration cycle 35 and a third switching mechanism 333. The compression refrigeration cycle 35 includes an evaporator 354. The evaporator 354 has an internal heat exchange flow path 3541. The internal heat exchange flow path 3541 is connected to the first heat exchange flow path 31 through the third switching mechanism 333. The third switching mechanism 333 is configured to be suitable for performing a switching operation to connect the internal heat exchange flow path 3541 to the first heat exchange flow path 31 via the third switching mechanism 333, or disconnect the connection relationship between the internal heat exchange flow path 3541 and the first heat exchange flow path 31 via the third switching mechanism 333. The second switching mechanism 332 and the third switching mechanism 333 both include a switching valve. The second switching mechanism 332 and the cold storage container 341 are connected in series to form a first branch. The third switching mechanism 333 and the first heat exchanger 311 are connected in series to form a second branch. The first branch is connected in parallel with the second branch, or the second switching mechanism 332 and the third switching mechanism 333 are connected to form a three-way valve.

[0223] During the high current discharge process, the second switching mechanism 332 switches the cold storage flow path 34 to a state connected to the first heat exchange flow path 31, so that the cold storage flow path 34 releases cold energy to the first heat exchange flow path 31, and at the same time, the third switching mechanism 333 switches the internal heat exchange flow path 3541 of the evaporator 354 to a state connected to the first heat exchange flow path 31, so that the first heat exchanger 311 cools the battery device 10; in the cold storage mode, the third switching mechanism 333 switches the internal heat exchange flow path 3541 to a state disconnected from the first heat exchange flow path 31, and the internal heat exchange flow path 3541 is connected to the cold storage container 341, so that the refrigerant passes through the cold storage container 341, and the phase change component 342 in the cold storage container 341 absorbs cold energy. Therefore, through the operation of the second switching mechanism 332 and the third switching mechanism 333, operation in different modes can be realized, and the temperature of the battery device 10 can be appropriately adjusted under different charging conditions, so that the operation of the charging system is more reliable and stable.

[0224] Please refer to Fig. 8A and Figure 8B In some embodiments, the first heat exchange flow path 31 further includes a first pump 313 , and the first pump 313 is used to transport heat exchange medium to the first heat exchanger 311 and / or the cold storage flow path 34 .

[0225] As an example, when the first branch and the second branch are connected in parallel, the first branch and the second branch are connected in parallel and connected in series with the first pump 313, and the cold storage flow path 34 and the first heat exchanger 311 are respectively connected to the internal heat exchange flow path 3541 of the evaporator 354 through the switching operation of the second switching mechanism 332 and the third switching mechanism 333, and the first pump 313 simultaneously delivers heat exchange medium to the first heat exchanger 311 and the cold storage flow path 34; through the switching operation of the second switching mechanism 332 and the third switching mechanism 333, the cold storage flow path 34 and the first heat exchanger 311 are connected to the internal heat exchange flow path 3541 of the evaporator 354, and the first pump 313 delivers heat exchange medium to one of the first heat exchanger 311 and the cold storage flow path 34. In other examples, the first pump may be provided in both the cold storage flow path 34 and the first heat exchange flow path 31.

[0226] The first pump 313 can deliver cold energy to the cold storage flow path 34 and / or the first heat exchanger 311 in different modes to form different circulation flow paths, so as to meet different circulation requirements under different working conditions.

[0227] Please refer to Fig. 8A and Figure 8B In some embodiments, the thermal management system 30 further includes a third heat exchange flow path 36 , the third heat exchange flow path 36 further includes a third heat exchanger 361 , and the third heat exchange flow path 36 is connected in series with the second heat exchange flow path 32 .

[0228] The third heat exchanger 361 can be a gas-liquid heat exchanger (a heat exchanger for heat exchange between gas and liquid) or a liquid-liquid heat exchanger (a heat exchanger for heat exchange between liquid and liquid). When a gas-liquid heat exchanger is used, air cooling can be used to dissipate heat, that is, heat exchange between air and the heat exchange medium in the third heat exchange flow path 36 is used to dissipate heat. When a liquid-liquid heat exchanger is used, heat exchange between a low-temperature heat exchange medium and a high-temperature heat exchange medium can be used to cool down and dissipate heat in the third heat exchange flow path 36.

[0229] The third heat exchange flow path 36 is connected in series with the second heat exchange flow path 32 to form a cooling circulation flow path for the charging connector 20. The third heat exchanger 361 is used to dissipate heat, which can provide continuous cooling for the charging connector 20, so as to continuously cool the charging connector 20 during the charging process, thereby improving the reliability and safety of charging.

[0230] Please refer to Fig. 8A and Figure 8BIn some embodiments, the thermal management system 30 also includes a compression refrigeration cycle loop 35 and a third switching mechanism 333. The compression refrigeration cycle loop 35 includes a condenser 352 and an evaporator 354. The evaporator 354 has an internal heat exchange flow channel 3541. The internal heat exchange flow channel 3541 is connected to the first heat exchange flow channel 31 through the third switching mechanism 333. The thermal management system 30 also includes a fan 37, which acts on the condenser 352 and the third heat exchanger 361.

[0231] The compression refrigeration cycle 35 can provide cooling capacity with higher efficiency to meet higher heat dissipation and cooling requirements. The fan 37 can air-cool the condenser 352 to improve the efficiency of the condenser 352. The fan 37 can include axial flow, centrifugal, mixed flow and other fans. The fan 37 can also be used to guide the airflow in the environment to exchange heat with the third heat exchanger 361 to improve the heat exchange efficiency, and the number of fans 37 can be reduced accordingly, which is conducive to reducing costs and energy consumption.

[0232] In this embodiment, the compression refrigeration cycle 35 and the third heat exchange flow path 36 can provide different degrees of cooling capacity, and the energy consumed is also different. Under different working conditions, the switching operation of the first switching mechanism 331 and the third switching mechanism 333 is performed according to actual conditions to meet the needs of improving thermal management efficiency or reducing energy consumption, thereby improving the adaptability of the thermal management system to working conditions.

[0233] refer to Figure 2 , Figure 4A , Fig. 8A and Figure 8B In some embodiments, the third heat exchanger 361 includes a free cooling heat exchanger 3611 .

[0234] The natural cooling heat exchanger 3611 can utilize the coldness in the natural environment to exchange heat with the heat exchange medium passing through the natural cooling heat exchanger 3611, which can effectively save energy consumption. As needed, a fan 37 can be set near the natural cooling heat exchanger 3611, and the fan 37 guides the airflow in the environment to exchange heat with the natural cooling heat exchanger 3611, thereby improving the heat exchange efficiency.

[0235] The natural cooling heat exchanger 3611 can adopt a heat dissipation water tank, and a heat dissipation structure can be arranged on the outside so that heat can be taken away by air to achieve cooling of the heat exchange medium. A flow channel for the flow of the heat exchange medium is arranged inside so that the heat exchange medium in the third heat exchange flow path 36 can flow smoothly through the natural cooling heat exchanger 3611.

[0236] In this embodiment, a natural cooling heat exchanger 3611 is provided in the third heat exchange flow path 36, which can participate in the natural heat exchange between the heat exchange medium in the thermal management system and the outside in some working modes of the thermal management system 30, which is beneficial to further reduce the energy consumption of the system.

[0237] refer to Fig. 7A , Figure 7B , Fig. 8A and Figure 8B In some embodiments, the first heat exchange flow path 31 further includes a heater 312 , and the heater 312 is configured to heat the heat exchange medium flowing through the heater 312 when the heating function is turned on.

[0238] For the battery device 10, too low a temperature will also affect the normal use of the battery device 10 to a certain extent. Therefore, according to actual conditions, the temperature of the heat exchange medium can be increased by turning on the heater 312 so that the heat exchange medium with a higher temperature transfers heat to the battery device 10 through the first heat exchanger 311 to increase the temperature of the battery device 10.

[0239] The heater 312 may be an electric heater, a steam heater or any other available heater, etc. For example, the heater 312 may be a positive temperature coefficient (PTC) heater which is safe and has high heating efficiency.

[0240] exist Fig. 7A , Figure 7B , Fig. 8A and Figure 8B In the embodiment, the heater 312 may be disposed between the first pump 313 and the first switching mechanism 331, and one end of the cold storage flow path 34 may be connected to the first heat exchange flow path 31 between the heater 312 and the outlet side of the first pump 313. In other embodiments, the heater 312 may also be disposed between the first heat exchanger 311 and the first switching mechanism 331. The heater 312 is not limited to Fig. 7A and Figure 7B The embodiment shown can also be arranged in the aforementioned Figure 2-6B The various embodiments of the present invention will not be described in detail here.

[0241] In this embodiment, by using the heater 312 to heat the heat exchange medium, when the temperature of the battery device 10 is relatively low, the temperature of the battery device 10 can be increased through the first heat exchanger 311 .

[0242] refer to Figure 2-Figure 8B In some embodiments, the second heat exchange flow path 32 further includes a second pump 322 .

[0243] When the second pump 322 is started, it can drive the heat exchange medium to flow in the second heat exchange flow path 32, so that the heat exchange medium exchanges heat with the charging connector 20 in the second heat exchanger 321. When the second pump 322 is turned off, a circuit break can be formed at the location of the second pump 322, so that the second heat exchange flow path 32 does not participate in the circulation loop of other heat exchange media. In other embodiments, the second heat exchange flow path 32 may not include the second pump 322, and the heat exchange medium is driven by driving elements in other flow paths.

[0244] In this embodiment, by providing a second pump 322 in the second heat exchange flow path 32, the second heat exchange flow path 32 can realize active driving of the heat exchange medium, so as to form a circulation loop with other heat exchange flow paths as needed to meet the cooling requirements of the charging connector 20.

[0245] refer to Figure 2-8B In some embodiments, the charging system further includes: a first power conversion module 11 and / or a second power conversion module 21. The first power conversion module 11 is connected to the battery device 10 and performs heat exchange with the first heat exchanger 311. The second power conversion module 21 is connected to the charging connector 20 and performs heat exchange with the second heat exchanger 321.

[0246] The first power conversion module 11 may include an AC / DC converter, which can convert alternating current from a power grid or a power source into direct current, so as to charge the battery device 10 to store electrical energy in the battery device 10. The second power conversion module 21 may include a DC / DC converter, which can convert direct current of one voltage into direct current of another voltage to match the charging interface of the device to be charged, so as to charge the device to be charged via the charging connector 20.

[0247] In this embodiment, either the first power conversion module 11 or the second power conversion module 21 will generate heat during operation. Through the heat exchange between the first heat exchanger 311 and the first power conversion module 11, and through the heat exchange between the second heat exchanger 321 and the second power conversion module 21, they can achieve a longer operating time and service life.

[0248] Combine the following Figure 1 and Figure 7B A first specific embodiment of the charging system will be described.

[0249] The charging system includes a battery device 10, a first power conversion module 11 connected to the battery device 10, a charging connector 20, a second power conversion module 21 connected to the charging connector 20, and a thermal management system 30. The battery device 10 is used to store electrical energy. The charging connector 20 is electrically connected to the battery device 10, and the charging connector 20 is used to charge the device to be charged.

[0250] The thermal management system 30 includes a first heat exchange path 31, a second heat exchange path 32, a cold storage path 34, a compression refrigeration cycle 35, a third heat exchange path 36, a fan 37, a heat exchange bypass 38, a first switching mechanism 331, a second switching mechanism 332, a third switching mechanism 333 and a fourth switching mechanism 334.

[0251] The first heat exchange flow path 31 includes a first heat exchanger 311, a heater 312, and a first pump 313. The first heat exchanger 311 is used to perform heat exchange with the battery device 10 and the first heat exchanger 311, and the heater 312 is configured to heat the heat exchange medium flowing through the heater 312 when the heating function is turned on. The second heat exchange flow path 32 includes a second heat exchanger 321 and a second pump 322. The second heat exchanger 321 is used to perform heat exchange with the charging connector 20 and the second heat exchanger 321.

[0252] The second heat exchange flow path 32 is connected to the first heat exchange flow path 31 through the first switching mechanism 331, and the first switching mechanism 331 is configured to be suitable for performing a switching operation to connect the second heat exchange flow path 32 with the first heat exchange flow path 31 via the first switching mechanism 331, or to disconnect the connection between the second heat exchange flow path 32 and the first heat exchange flow path 31 via the first switching mechanism 331.

[0253] The third heat exchange flow path 36 also includes a third heat exchanger 361. The third heat exchange flow path 36 is connected in parallel with the second heat exchange flow path 32, and is connected to the first heat exchange flow path 31 through the first switching mechanism 331, so that through the switching operation of the first switching mechanism 331, the third heat exchange flow path 36 is connected to the first heat exchange flow path 31 via the first switching mechanism 331, or the connection relationship between the third heat exchange flow path 36 and the first heat exchange flow path 31 via the first switching mechanism 331 is disconnected.

[0254] The compression refrigeration cycle 35 includes a condenser 352 and an evaporator 354. The evaporator 354 has an internal heat exchange channel 3541. The internal heat exchange channel 3541 is connected to the first heat exchange channel 31 through a third switching mechanism 333. The third switching mechanism 333 is configured to perform a switching operation to connect the internal heat exchange channel 3541 to the first heat exchange channel 31 via the third switching mechanism 333, or disconnect the connection relationship between the internal heat exchange channel 3541 and the first heat exchange channel 31 via the third switching mechanism 333. The fan 37 acts on the condenser 352 and the third heat exchanger 361.

[0255] The cold storage flow path 34 includes a cold storage container 341, which is configured to pass a heat exchange medium, a phase change component 342 is located in the cold storage container 341, and the phase change component 342 is used to absorb or release the cold of the heat exchange medium, and the second heat exchange flow path 32 includes a second heat exchanger 321 for heat exchange with the charging connector 20. The cold storage container 341 is used to store and release cold energy, and the cold storage flow path 34 is connected to the first heat exchange flow path 31 through a second switching mechanism 332, and the second switching mechanism 332 is configured to be suitable for performing a switching operation to connect the cold storage flow path 34 to the first heat exchange flow path 31 via the second switching mechanism 332, or disconnect the connection relationship between the cold storage flow path 34 and the first heat exchange flow path 31 via the second switching mechanism 332.

[0256] The first heat exchanger 311 is connected in parallel with the heat exchange bypass 38. One end of the heat exchange bypass 38 is connected to the inlet of the first pump 313, and the other end is connected to the first heat exchange flow path 31 through the fourth switching mechanism 334. The fourth switching mechanism 334 is configured to be suitable for performing a switching operation to connect the heat exchange bypass 38 with the first heat exchange flow path 31 via the fourth switching mechanism 334, or to disconnect the connection between the heat exchange bypass 38 and the first heat exchange flow path 31 via the fourth switching mechanism 334.

[0257] Combine the following Fig. 8A , Figure 8B and Fig.9A A second specific embodiment will be described.

[0258] The charging system includes: a battery device 10, a first power conversion module 11 connected to the battery device 10, a charging connector 20, a second power conversion module 21 connected to the charging connector 20, and a thermal management system 30. The battery device 10 is used to store electrical energy. The charging connector 20 is electrically connected to the battery device 10, and the charging connector 20 is used to charge the device to be charged.

[0259] The thermal management system 30 includes a first heat exchange flow path 31, a second heat exchange flow path 32, a cold storage flow path 34, a compression refrigeration cycle 35, a third heat exchange flow path 36, a fan 37, a second switching mechanism 332, and a third switching mechanism 333. The first heat exchange flow path 31 includes a first heat exchanger 311 for performing heat exchange with the battery device 10, the cold storage flow path 34 is connected to the first heat exchange flow path 31 in a switchable connection and disconnection manner, the cold storage flow path 34 includes a cold storage container 341 and a phase change component 342, the cold storage container 341 is configured to be suitable for passing a heat exchange medium, the phase change component 342 is located in the cold storage container 341, and the phase change component 342 is used to absorb or release the cold of the heat exchange medium, and the second heat exchange flow path 32 includes a second heat exchanger 321 for performing heat exchange with the charging connector 20.

[0260] One end of the cold storage flow path 34 is connected to the first heat exchange flow path 31 through the second switching mechanism 332, so that the cold storage flow path 34 is connected to the first heat exchange flow path 31 through the second switching mechanism 332, or the connection relationship between the cold storage flow path 34 and the first heat exchange flow path 31 through the second switching mechanism 332 is disconnected through the switching operation of the second switching mechanism 332. The compression refrigeration cycle 35 includes an evaporator 354, and the evaporator 354 has an internal heat exchange flow path 3541, and the internal heat exchange flow path 3541 is connected to the first heat exchange flow path 31 through the third switching mechanism 333, and the third switching mechanism 333 is configured to perform a switching operation to connect the internal heat exchange flow path 3541 to the first heat exchange flow path 31 through the third switching mechanism 333, or disconnect the connection relationship between the internal heat exchange flow path 3541 and the first heat exchange flow path 31 through the third switching mechanism 333. The second switching mechanism 332 and the third switching mechanism 333 respectively include switching valves, the second switching mechanism 332 and the cold storage container 341 are connected in series to form a first branch, the third switching mechanism 333 and the first heat exchanger 311 are connected in series to form a second branch, and the first branch is connected in parallel with the second branch. The first pump 313 is used to transport heat exchange medium to the first heat exchanger 311 and / or the cold storage flow path 34.

[0261] The third heat exchange flow path 36 further includes a third heat exchanger 361 , and the third heat exchange flow path 36 is connected in series with the second heat exchange flow path 32 . The third heat exchanger 361 includes a natural cooling heat exchanger 3611 .

[0262] The first heat exchange flow path 31 further includes a heater 312 , and the heater 312 is configured to heat the heat exchange medium flowing through the heater 312 when the heating function is turned on.

[0263] In this specification, multiple embodiments are described in a progressive manner. The focus of each embodiment is different, and the same or similar parts between the embodiments can be referenced to each other.

[0264] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A charging system, characterized in that: include: A battery device (10) for storing electrical energy; A charging connector (20), electrically connected to the battery device (10), and used to charge the device to be charged; and A thermal management system (30) comprising a first heat exchange flow path (31), a second heat exchange flow path (32) and a cold storage flow path (34); The first heat exchange flow path (31) includes a first heat exchanger (311) for performing heat exchange with the battery device (10); the cold storage flow path (34) is connected to the first heat exchange flow path (31) in a switchable connection and disconnection manner; the cold storage flow path (34) includes a cold storage container (341) and a phase change component (342); the cold storage container (341) is configured to be suitable for passing a heat exchange medium; the phase change component (342) is located in the cold storage container (341); the phase change component (342) is used to absorb or release the cold of the heat exchange medium; and the second heat exchange flow path (32) includes a second heat exchanger (321) for performing heat exchange with the charging connector (20).

2. The charging system according to claim 1, characterized in that: The phase change component (342) comprises a heat-conducting shell (3421) and a phase change layer (3422); the heat-conducting shell (3421) has a closed accommodating cavity, and the accommodating cavity is filled with the phase change layer (3422).

3. The charging system according to claim 1, characterized in that: There are a plurality of phase change components (342), and the plurality of phase change components (342) are arranged at intervals.

4. The charging system according to claim 1, characterized in that: The thermal management system (30) further includes a first switching mechanism (331), the second heat exchange flow path (32) being connected to the first heat exchange flow path (31) via the first switching mechanism (331), and the first switching mechanism (331) being configured to be suitable for performing a switching operation so that the second heat exchange flow path (32) is connected to the first heat exchange flow path (31) via the first switching mechanism (331), or the connection relationship between the second heat exchange flow path (32) and the first heat exchange flow path (31) via the first switching mechanism (331) is disconnected.

5. The charging system according to claim 4, characterized in that: The thermal management system (30) further includes a compression refrigeration cycle circuit (35) and a third switching mechanism (333), wherein the compression refrigeration cycle circuit (35) includes an evaporator (354), wherein the evaporator (354) has an internal heat exchange channel (3541), wherein the internal heat exchange channel (3541) is connected to the first heat exchange channel (31) via the third switching mechanism (333), and wherein the third switching mechanism (333) is configured to be suitable for performing a switching operation so that the internal heat exchange channel (3541) is connected to the first heat exchange channel (31) via the third switching mechanism (333), or to disconnect the connection between the internal heat exchange channel (3541) and the first heat exchange channel (31) via the third switching mechanism (333).

6. The charging system according to claim 5, characterized in that: The first heat exchange flow path (31) is configured so that when the third switching mechanism (333) is switched to a connected state, at least a portion of the first heat exchange flow path (31) forms a heat exchange loop with the internal heat exchange flow channel (3541).

7. The charging system according to claim 5, characterized in that: The third switching mechanism (333) and the first switching mechanism (331) respectively comprise a switching valve; or the third switching mechanism (333) and the first switching mechanism (331) are connected to form a three-way valve.

8. The charging system according to claim 4, characterized in that: The thermal management system (30) further includes a third heat exchange flow path (36), and the third heat exchange flow path (36) further includes a third heat exchanger (361). The third heat exchange flow path (36) is connected in parallel with the second heat exchange flow path (32), and is connected to the first heat exchange flow path (31) through the first switching mechanism (331). The first switching mechanism (331) is configured to be suitable for performing a switching operation to connect the third heat exchange flow path (36) to the first heat exchange flow path (31) via the first switching mechanism (331), or to disconnect the connection between the third heat exchange flow path (36) and the first heat exchange flow path (31) via the first switching mechanism (331).

9. The charging system according to claim 8, characterized in that: The first heat exchange flow path (31) is configured so that when the first switching mechanism (331) is switched to a connected state, at least a portion of the first heat exchange flow path (31) forms a heat exchange loop with the third heat exchange flow path (36).

10. The charging system according to claim 8, characterized in that: The third heat exchanger (361) includes a natural cooling heat exchanger (3611).

11. The charging system according to claim 8, characterized in that: The thermal management system (30) further includes a compression refrigeration cycle circuit (35) and a third switching mechanism (333). The compression refrigeration cycle circuit (35) includes a condenser (352) and an evaporator (354). The evaporator (354) has an internal heat exchange flow path (3541). The internal heat exchange flow path (3541) is connected to the first heat exchange flow path (31) via the third switching mechanism (333). The thermal management system (30) further includes a fan (37). The fan (37) acts on the condenser (352) and the third heat exchanger (361).

12. The charging system according to claim 5, characterized in that: The thermal management system (30) further comprises a second switching mechanism (332), one end of the cold storage flow path (34) being connected to the first heat exchange flow path (31) via the second switching mechanism (332), and the second switching mechanism (332) being configured to be suitable for performing a switching operation so as to connect the cold storage flow path (34) to the first heat exchange flow path (31) via the second switching mechanism (332), or to disconnect the connection between the cold storage flow path (34) and the first heat exchange flow path (31) via the second switching mechanism (332).

13. The charging system according to claim 12, characterized in that: The first heat exchange flow path (31) further includes a first pump (313), and the thermal management system (30) further includes a heat exchange bypass (38) and a fourth switching mechanism (334). The first heat exchanger (311) is connected in parallel with the heat exchange bypass (38), one end of the heat exchange bypass (38) is connected to an inlet of the first pump (313), and the other end of the heat exchange bypass (38) is connected to the first heat exchange flow path (31) via the fourth switching mechanism (334). The fourth switching mechanism (334) is configured to be suitable for performing a switching operation so that the heat exchange bypass (38) is connected to the first heat exchange flow path (31) via the fourth switching mechanism (334), or the connection relationship between the heat exchange bypass (38) and the first heat exchange flow path (31) via the fourth switching mechanism (334) is disconnected.

14. The charging system according to claim 13, characterized in that: The cold storage flow path (34) is configured to, when the second switching mechanism (332) and the fourth switching mechanism (334) are both switched to a connected state, enable a portion of the flow path in the first heat exchange flow path (31) that does not include the first heat exchanger (311) to form a heat exchange loop with the cold storage flow path (34) and the heat exchange bypass (38); or, when the second switching mechanism (332) is switched to a connected state and the fourth switching mechanism (334) is switched to a disconnected state, enable a portion of the flow path in the first heat exchange flow path (31) that includes the first heat exchanger (311) to form a heat exchange loop with the cold storage flow path (34).

15. The charging system according to claim 13, characterized in that: The first switching mechanism (331), the second switching mechanism (332) and the fourth switching mechanism (334) respectively comprise a switching valve, or the first switching mechanism (331), the second switching mechanism (332) and the fourth switching mechanism (334) are connected in sequence to form a four-way valve.

16. The charging system according to claim 13, characterized in that: The first switching mechanism (331), the second switching mechanism (332), the third switching mechanism (333) and the fourth switching mechanism (334) respectively include switching valves, or the first switching mechanism (331), the second switching mechanism (332), the third switching mechanism (333) and the fourth switching mechanism (334) are connected in sequence to form a three-way valve or a four-way valve.

17. The charging system according to claim 1, characterized in that: The first heat exchange flow path (31) and the second heat exchange flow path (32) are two independent flow paths. The thermal management system (30) further comprises a second switching mechanism (332). One end of the cold storage flow path (34) is connected to the first heat exchange flow path (31) via the second switching mechanism (332). The second switching mechanism (332) is configured to be suitable for performing a switching operation so that the cold storage flow path (34) is connected to the first heat exchange flow path (31) via the second switching mechanism (332), or the connection relationship between the cold storage flow path (34) and the first heat exchange flow path (31) via the second switching mechanism (332) is disconnected.

18. The charging system according to claim 1, characterized in that: The thermal management system (30) further includes a compression refrigeration cycle circuit (35) and a third switching mechanism (333), wherein the compression refrigeration cycle circuit (35) includes an evaporator (354), wherein the evaporator (354) has an internal heat exchange channel (3541), wherein the internal heat exchange channel (3541) is connected to the first heat exchange channel (31) via the third switching mechanism (333), and wherein the third switching mechanism (333) is configured to be suitable for performing a switching operation, so that the internal heat exchange channel (3541) is connected to the first heat exchange channel (31) via the third switching mechanism (333), or the connection relationship between the internal heat exchange channel (3541) and the first heat exchange channel (31) via the third switching mechanism (333) is disconnected.

19. The charging system according to claim 18, wherein: The first heat exchange flow path (31) is configured to When the third switching mechanism (333) is switched to a connected state, at least a portion of the first heat exchange flow path (31) is A heat exchange circuit is formed with the internal heat exchange channel (3541).

20. The charging system according to claim 1, characterized in that: The thermal management system (30) further comprises a second switching mechanism (332), the cold storage flow path (34) being connected to the first heat exchange flow path (31) via the second switching mechanism (332), and the second switching mechanism (332) being configured to be suitable for performing a switching operation so as to connect the cold storage flow path (34) to the first heat exchange flow path (31) via the second switching mechanism (332), or to disconnect the connection relationship between the cold storage flow path (34) and the first heat exchange flow path (31) via the second switching mechanism (332); The thermal management system (30) further comprises a compression refrigeration cycle circuit (35) and a third switching mechanism (333), wherein the compression refrigeration cycle circuit (35) comprises an evaporator (354), wherein the evaporator (354) has an internal heat exchange flow channel (3541), wherein the internal heat exchange flow channel (3541) is connected to the first heat exchange flow path (31) via the third switching mechanism (333), and wherein the third switching mechanism (333) is configured to perform a switching operation so as to connect the internal heat exchange flow channel (3541) to the first heat exchange flow path (31) via the third switching mechanism (333), or to disconnect the connection relationship between the internal heat exchange flow channel (3541) and the first heat exchange flow path (31) via the third switching mechanism (333); The second switching mechanism (332) and the third switching mechanism (333) both comprise a switching valve, the second switching mechanism (332) is connected in series with the cold storage container to form a first branch, the third switching mechanism (333) is connected in series with the first heat exchanger (311) to form a second branch, the first branch is connected in parallel with the second branch, or the second switching mechanism (332) and the third switching mechanism (333) are connected to form a three-way valve.

21. The charging system according to any one of claims 17 to 20, characterized in that: The first heat exchange flow path (31) further comprises a first pump (313), wherein the first pump (313) is used to transport heat exchange medium to the first heat exchanger (311) and / or the cold storage flow path.

22. The charging system according to any one of claims 18 to 20, characterized in that: The thermal management system (30) further comprises a third heat exchange flow path (36), the third heat exchange flow path (36) comprising a third heat exchanger (361), and the third heat exchange flow path (36) is connected in series with the second heat exchange flow path (32).

23. The charging system according to claim 22, characterized in that: The third heat exchanger (361) includes a natural cooling heat exchanger (3611).

24. The charging system according to claim 22, characterized in that: The thermal management system (30) further includes a fan (37), and the compression refrigeration cycle (35) further includes a condenser (352), and the fan (37) acts on the condenser (352) and the third heat exchanger (361).

25. The charging system according to any one of claims 1 to 20, characterized in that: The first heat exchange flow path (31) further comprises a heater (312), and the heater (312) is configured to heat the heat exchange medium flowing through the heater (312) when a heating function is turned on.

26. The charging system according to any one of claims 1 to 20, characterized in that: The second heat exchange flow path (32) also includes a second pump (322).

27. The charging system according to any one of claims 1 to 20, characterized in that: The charging system further comprises: A first power conversion module (11) is connected to the battery device (10) and to the first heat exchanger (311) performing heat exchange; and / or A second power conversion module (21) is connected to the charging connector (20) and to the second heat exchanger (321) Perform heat exchange.

Images