Heat exchange system, energy storage device and electric equipment

Abstract

The invention discloses a heat exchange system, an energy storage device and electric equipment, the heat exchange system comprises a heat exchange assembly, the heat exchange assembly forms a medium flow path for circulation of a heat exchange medium, the heat exchange assembly comprises a liquid injection valve, the liquid injection valve comprises a valve body and a charging connector, the valve body is directly connected with the charging connector, the valve body communicates with the medium flow path, and the charging connector is directly connected with the valve body. The filling connector is used for being connected with liquid injection equipment. The filling connector is directly connected to the valve body, so that a connecting pipeline does not need to be arranged between the filling connector and the valve body, use of the connecting pipeline is reduced, and the problem of heat exchange medium residues in the connecting pipeline is solved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a heat exchange system, energy storage device and electrical equipment. Background Technology

[0002] Energy storage devices are widely used due to their advantages such as large energy storage capacity. An energy storage device typically includes a housing, a heat exchange system, and multiple batteries. The heat exchange system and multiple batteries are housed separately within the housing, and the heat exchange system is used to exchange heat with the multiple batteries to ensure stable operation.

[0003] In related technologies, the injection point of the coolant heat exchange medium in a heat exchange system is prone to the problem of coolant heat exchange medium residue. Summary of the Invention

[0004] In view of the above problems, this application provides a heat exchange system, an energy storage device and an electrical device, which solves the problem that heat exchange medium residue is easy to occur at the injection point of the heat exchange medium.

[0005] The first aspect of this application proposes a heat exchange system, which includes a heat exchange component forming a medium flow path for circulating heat exchange medium. The heat exchange component includes a liquid injection valve, which includes a valve body and a filling connector. The valve body is directly connected to the filling connector and is connected to the medium flow path. The filling connector is used to connect to a liquid injection device.

[0006] Specifically, the injection valve is located in the medium flow path. When adding the heat exchange medium, the injection equipment is connected to the filling connector of the injection valve, and the valve body is opened, allowing the heat exchange medium to enter the medium flow path through the injection valve. After the heat exchange medium is added, the valve body is closed, and the injection equipment and filling connector are disconnected. Connecting the filling connector to the valve body eliminates the need for connecting pipelines between the filling connector and the valve body, reducing the use of connecting pipelines and thus reducing the problem of heat exchange medium residue in the connecting pipelines.

[0007] In some embodiments of this application, the filling connector and the valve body are an integral structure, or the filling connector and the valve body are separate structures.

[0008] Specifically, when the filling connector and the valve body are an integral structure, the filling connector and the valve body can be processed simultaneously, reducing the number of processing steps and thus improving processing efficiency.

[0009] When the filling connector and the valve body are separate structures, the filling connector and the valve body are machined separately and then assembled, which can effectively reduce the difficulty of machining.

[0010] In some embodiments of this application, the filling connector and the valve body are separate structures, and the connection method between the filling connector and the valve body includes welding, bonding, screwing or snap-fitting.

[0011] By setting the connection method between the split-type filling connector and the valve body, the connection method can be selected according to assembly needs, thereby improving the flexibility of the connection between the filling connector and the valve body and accelerating the production cycle.

[0012] In some embodiments of this application, the heat exchange system further includes a housing and a support frame. The first heat exchange component and the second heat exchange component are respectively disposed on the support frame. The support frame is disposed inside the housing. The filling connector includes a connector portion and a connecting portion. The connector portion is connected to the valve body, and the connecting portion is connected to the support frame.

[0013] The connecting part is connected to the support frame, which allows the injection valve to be connected and fixed to the support frame, thereby improving the structural stability of the injection valve and reducing the occurrence of heat exchange medium leakage due to loose injection valve.

[0014] In some embodiments of this application, the connecting part and the connector part are an integral structure, or the connecting part and the connector part are separate structures.

[0015] Specifically, when the connecting part and the joint part are an integral structure, the connecting part and the joint part can be processed simultaneously, reducing the number of processing steps and thus improving processing efficiency.

[0016] When the connecting part and the joint part are separate structures, the connecting part and the joint part are processed separately and then assembled, which can effectively reduce the difficulty of processing.

[0017] In some embodiments of this application, the connecting part and the connector part are separate structures, and the connection method between the connecting part and the connector part includes welding, bonding, screwing or snap-fitting.

[0018] By setting the connection method of the connecting part and the joint part of the split structure, the connection method can be selected according to the assembly needs, thereby improving the flexibility of the connection between the connecting part and the joint part and speeding up the production cycle.

[0019] In some embodiments of this application, the connection between the connecting part and the support frame includes welding, bonding, screwing, snap-fitting, or connection via a connector.

[0020] By setting the connection method between the connecting part and the support frame, the connection method can be selected according to the assembly needs, thereby improving the flexibility of the connection between the connecting part and the support frame and accelerating the production cycle.

[0021] In some embodiments of this application, the connector includes a first end and a second end arranged opposite to each other. The first end is connected to the valve body, and the second end is used to connect to the liquid injection device. The connecting part is a plate-shaped member, which is arranged around the outside of the connector and is spaced apart from the first end and the second end respectively.

[0022] By designing the connecting portion as a plate-like component and positioning it between the first and second ends, the influence of the connecting portion on the first and second ends is reduced, improving the ease of connection between the first end and the valve body, as well as the ease of connection between the second end and the injection device. Furthermore, the plate-like connecting portion increases the contact area with the support frame, thereby enhancing the connection strength.

[0023] In some embodiments of this application, a first convex ring and a second convex ring are provided on the outer peripheral wall of the connector. The first and second convex rings are spaced apart between the second end and the connecting part. The first convex ring, the second convex ring, and the outer peripheral wall of the connector form an annular groove, which is used to cooperate with the fasteners of the injection pipe of the injection equipment. When the injection pipe of the injection equipment is connected to the connector, the injection pipe is sleeved on the body of the connector located between the second end and the connecting part, and the fasteners are embedded in the annular groove to fix the injection pipe to the connector. The annular groove reduces the possibility of the injection pipe falling off, thereby enabling the injection operation to be carried out effectively and reducing the occurrence of heat exchange medium leakage and overflow.

[0024] In some embodiments of this application, the first convex ring is disposed further away from the connecting portion than the second convex ring, and the first convex ring is narrowed along the direction from the second convex ring to the first convex ring. This design of the first convex ring facilitates its insertion into the injection tube of the injection device, improving the ease of connection.

[0025] In some embodiments of this application, the valve body is a ball valve. Ball valves have a simple structure, are easy to use, and can effectively reduce manufacturing costs.

[0026] A second aspect of this application provides an energy storage device, which includes:

[0027] Box;

[0028] At least one battery cluster, wherein the at least one battery cluster is disposed within the housing;

[0029] According to the heat exchange system described above, the heat exchange system is located in the housing and exchanges heat with the at least one battery cluster.

[0030] Specifically, the injection valve of the heat exchange system is located in the medium flow path. When the heat exchange medium is added, the injection equipment is connected to the filling connector of the injection valve and the valve body is opened, so that the heat exchange medium enters the medium flow path through the injection valve to realize the addition of the heat exchange medium. After the heat exchange medium is added, the valve body is closed and the injection equipment and the filling connector are separated.

[0031] A third aspect of this application provides an electrical appliance that includes an energy storage device as described above.

[0032] Specifically, in the energy storage device, the injection valve of the heat exchange system is located in the medium flow path. When adding the heat exchange medium, the injection equipment is connected to the filling connector of the injection valve, and the valve body is opened, allowing the heat exchange medium to enter the medium flow path through the injection valve. After the heat exchange medium is added, the valve body is closed, and the injection equipment and the filling connector are disconnected. Connecting the filling connector to the valve body eliminates the need for connecting pipelines between the filling connector and the valve body, reducing the use of connecting pipelines and thus reducing the problem of heat exchange medium residue in the connecting pipelines.

[0033] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0034] Figure 1 A schematic diagram of the structure of an energy storage device according to one embodiment of this application is shown.

[0035] Figure 2 for Figure 1 A schematic diagram of the heat exchange system of the energy storage device shown (partial structure is shown);

[0036] Figure 3 for Figure 2 A schematic diagram of the structure shown from another perspective;

[0037] Figure 4 for Figure 3 A schematic diagram of the injection valve in the structure shown;

[0038] Figure 5 for Figure 4 The exploded view of the injection valve shown in the figure;

[0039] Figure 6 for Figure 5 The diagram shows the structure of the filling connector of the injection valve.

[0040] The attached figures are labeled as follows:

[0041] 100. Energy storage devices;

[0042] 10. Box body;

[0043] 101. First chamber; 102. Second chamber;

[0044] 20. Battery clusters;

[0045] 30. Heat exchange system;

[0046] 31. Support frame;

[0047] 32. Injection valve;

[0048] 321. Valve body; 3211. Wrench; 3212. Connecting hole; 322. Filling connector; 3221. Connector part; 32211. First end; 32212. Second end; 32213. First convex ring; 32214. Second convex ring; 32215. Annular groove; 3222. Connecting part;

[0049] 33. Heat exchange components;

[0050] 331. First heat exchange component;

[0051] 3311, First heat exchanger; 3312, Compressor; 3313, Throttling element; 3314, Second heat exchanger;

[0052] 332. Second heat exchange component;

[0053] 3321. Third heat exchanger; 3322. Drive pump. Detailed Implementation

[0054] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0056] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0057] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0058] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0059] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0060] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0061] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection, the internal communication of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0062] Currently, judging from market trends, the application of batteries is becoming increasingly widespread. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery applications, the market demand is also constantly increasing. Energy storage devices with multiple battery banks are widely used due to their large energy storage capacity.

[0063] Energy storage devices typically include a housing, a heat exchange system, and multiple batteries. The heat exchange system and batteries are housed separately within the housing. The heat exchange system provides heat to the batteries to ensure stable operation. In related technologies, a heat exchange medium circulates within the heat exchange system. This medium is added to the system through an injection port and an injection valve. The injection valve is connected to the heat exchange medium circulation loop within the system, and the injection port is connected to the injection valve via a connecting pipe. When adding heat exchange medium, the injection port is connected to the injection equipment, the injection valve is opened, and the injection equipment adds the heat exchange medium into the heat exchange medium circulation loop through the injection port, connecting pipeline, and injection valve. After the heat exchange medium is added, the injection equipment and injection valve are closed, the injection equipment is disconnected, and then the back suction equipment is connected to the injection port to back suction the heat exchange medium remaining in the injection port and connecting pipeline. However, the heat exchange medium in the connecting pipeline may not be completely back suctioned during the back suction process, resulting in the heat exchange medium remaining in the connecting pipeline and forming liquid accumulation. After flowing out during transportation, the customer mistakenly believes that the unit is leaking liquid.

[0064] In this application, the injection valve includes a valve body and a filling connector connected together. The valve body is connected to the medium flow path, and the filling connector is used to connect to the injection equipment. By directly connecting the filling connector to the valve body, no connecting pipeline is required between the filling connector and the valve body, thereby reducing the use of connecting pipelines and thus reducing the problem of heat exchange medium residue in the connecting pipelines.

[0065] In some embodiments of this application, such as Figures 1 to 6 As shown, a heat exchange system 30 is proposed. The heat exchange system 30 includes a heat exchange component 33, which forms a medium flow path for circulating heat exchange medium. The heat exchange component 33 includes a liquid injection valve 32, which includes a valve body 321 and a filling connector 322. The valve body 321 is directly connected to the filling connector 322 and is connected to the medium flow path. The filling connector 322 is used to connect to a liquid injection device.

[0066] The direct connection between the valve body 321 and the filling connector 322 means that the valve body 321 and the filling connector 322 are connected without any transition parts. For example, the valve body 321 and the filling connector 322 can be an integral structure and manufactured by integral molding; or the valve body 321 and the filling connector 322 can be a separate structure, with the two parts processed separately and then connected and fixed together.

[0067] In addition, in this application, the heat exchange medium can be a refrigerant (such as R134a, R410A, R407C, R417A, R404A, R22, R123, R124 and R142b, etc.) or a coolant (such as pure water, deionized water, ethylene glycol or propylene glycol, etc.).

[0068] Specifically, the injection valve 32 is located in the medium flow path. When adding the heat exchange medium, the injection device is connected to the filling connector 322 of the injection valve 32, and the valve body 321 is opened, allowing the heat exchange medium to enter the medium flow path through the injection valve 32. After the heat exchange medium is added, the valve body 321 is closed, and the injection device and the filling connector 322 are separated. By connecting the filling connector 322 to the valve body 321, there is no need to set up a connecting pipeline between the filling connector 322 and the valve body 321, reducing the use of connecting pipelines and thus reducing the problem of heat exchange medium residue in the connecting pipelines.

[0069] In some embodiments of this application, the heat exchange system 30 includes a first heat exchange component 33, a second heat exchange component 34, and a liquid injection valve 32. The first heat exchange component 33 includes a first medium flow path, and the second heat exchange component 34 is thermally connected to the first heat exchange component 33. The second heat exchange component 34 includes a second medium flow path. A first heat exchange medium circulates in the first medium flow path of the first heat exchange component 33, and a second heat exchange medium circulates in the second medium flow path of the second heat exchange component 34. The first heat exchange component 33 and the second heat exchange component 34 are thermally connected. This thermal connection means that the first heat exchange medium and the second heat exchange medium can exchange heat, that is, the first heat exchange medium and the second heat exchange medium have different temperatures. The temperature difference enables the first heat exchange medium and the second heat exchange medium to exchange heat, thereby achieving the purpose of heat exchange.

[0070] At least one of the first heat exchange component 33 and the second heat exchange component 34 is a heat exchange component. In the first medium flow path and the second medium flow path, at least one medium flow path is a medium flow path, that is, at least one of the first heat exchange medium and the second heat exchange medium is a heat exchange medium. For example, the first heat exchange medium is a heat exchange medium and the second heat exchange medium is a refrigerant. Another example is that the first heat exchange medium is a refrigerant and the second heat exchange medium is a heat exchange medium. Yet another example is that both the first heat exchange medium and the second heat exchange medium are heat exchange media.

[0071] In this application, one of the first heat exchange medium and the second heat exchange medium is a refrigerant, and the other is a heat exchange medium. The heat exchange medium can be a molten metal liquid, an aqueous solution of ethylene glycol, etc. The embodiments of this application do not limit the type of heat exchange medium.

[0072] The addition of heat exchange medium requires the use of a liquid injection device. During the addition process, the liquid injection device is connected to the liquid injection valve 32 and is injected into the circulation path of the heat exchange medium through the liquid injection valve 32 to realize the addition operation of the heat exchange medium.

[0073] It should be understood that the filling connector 322 is used to connect to the liquid injection equipment. When it is necessary to add heat exchange medium to the medium flow path, the liquid injection equipment is connected to the filling connector 322. After the heat exchange medium is added, the liquid injection equipment is disconnected from the filling connector 322.

[0074] In addition, the valve body 321 is connected to the filling connector 322. The valve body 321 has an open state and a closing device. When it is necessary to add heat exchange medium to the medium flow path, the liquid injection device is connected to the filling connector 322, and the valve body 321 is switched to the open state. At this time, the liquid injection device is connected to the medium flow path so that the heat exchange medium can be added to the medium flow path. After the heat exchange medium is added, the valve body 321 is switched to the closed state, and then the liquid injection device is separated from the filling connector 322.

[0075] Specifically, the injection valve 32 is located in the medium flow path. When adding the heat exchange medium, the injection device is connected to the filling connector 322 of the injection valve 32, and the valve body 321 is opened, allowing the heat exchange medium to enter the medium flow path through the injection valve 32. After the heat exchange medium is added, the valve body 321 is closed, and the injection device and the filling connector 322 are separated. The filling connector 322 is integrated into the valve body 321 and together they form the injection valve 32. The filling connector 322 is directly connected to the valve body 321, eliminating the need for connecting pipes between the filling connector 322 and the valve body 321, thus reducing the use of connecting pipes and reducing the problem of residual heat exchange medium.

[0076] It should be noted that the valve body 321 can be a manual structure (using a wrench 3211 to control the valve body 321 to switch between the open and closed states) or an electric structure. In addition, the valve body 321 can be a ball valve or a butterfly valve, etc.

[0077] In some embodiments of this application, the filling connector 322 and the valve body 321 are integrally formed. Specifically, when the filling connector 322 and the valve body 321 are integrally formed, the filling connector 322 and the valve body 321 can be processed synchronously, that is, the filling connector 322 and the valve body 321 are integrally formed, which reduces the number of processing steps and thus improves the processing efficiency.

[0078] It should be noted that when both the filling connector 322 and the valve body 321 are plastic parts, they can be manufactured by injection molding; when both the filling connector 322 and the valve body 321 are metal parts, they can be manufactured by casting.

[0079] In some embodiments of this application, the filling connector 322 and the valve body 321 are separate structures. Specifically, when the filling connector 322 and the valve body 321 are separate structures, the filling connector 322 and the valve body 321 are processed separately, and then the processed filling connector 322 and the valve body 321 are assembled, thereby effectively reducing the difficulty of processing.

[0080] In some embodiments of this application, such as Figure 5 As shown, the filling connector 322 and the valve body 321 are separate structures, and the connection methods between the filling connector 322 and the valve body 321 include welding, bonding, screwing or snap-fitting.

[0081] Specifically, by setting the connection method between the split-structure filling connector 322 and the valve body 321, the connection method can be selected according to the assembly requirements, thereby improving the flexibility of the connection between the filling connector 322 and the valve body 321 and accelerating the production cycle.

[0082] In some embodiments of this application, such as Figures 2 to 6 As shown, the heat exchange system 30 also includes a shell and a support frame 31. The support frame 31 is disposed inside the shell. The first heat exchange component 33 and the second heat exchange component 34 are respectively disposed on the support frame 31. The charging connector 322 includes a connector portion 3221 and a connecting portion 3222. The connector portion 3221 is connected to the valve body 321, and the connecting portion 3222 is connected to the support frame 31.

[0083] The support frame 31 is a frame structure (for example, formed by assembling multiple crossbeams, multiple longitudinal beams and multiple columns). The frame structure has an installation position and installation space. The support frame 31 can serve as a carrier for installing more than 30 components of the heat exchange system. The first heat exchange component 33 is installed on the support frame 31, the second heat exchange component 34 is also installed on the support frame 31, and the liquid injection valve 32 is also installed on the support frame 31.

[0084] Specifically, the injection valve 32 includes a connected filling connector 322 and a valve body 321. The valve body 321 is connected to the medium flow path of the heat exchange medium. The connecting part 3222 of the filling connector 322 is connected to the support frame 31, so that the injection valve 32 can be connected and fixed to the support frame 31, thereby improving the structural stability of the injection valve 32 and reducing the occurrence of heat exchange medium leakage due to loosening of the injection valve 32.

[0085] It should be noted that in this application, the joint 3221 is a tubular structure, and the connecting part 3222 is connected to the joint 3221. The connecting part 3222 is a plate-like structure, a rod-like structure, or a frame structure, etc.

[0086] In some embodiments of this application, the connection between the connecting part 3222 and the support frame 31 includes welding, bonding, screwing, snap-fitting, or connection via a connector.

[0087] Specifically, by setting the connection method between the connecting part 3222 and the support frame 31, the connection method can be selected according to the assembly needs, thereby improving the flexibility of the connection between the connecting part 3222 and the support frame 31 and accelerating the production cycle.

[0088] In some embodiments of this application, the connecting portion 3222 and the connector portion 3221 are integrally formed. Specifically, when the connecting portion 3222 and the connector portion 3221 are integrally formed, the connecting portion 3222 and the connector portion 3221 can be processed synchronously, that is, the connecting portion 3222 and the connector portion 3221 are integrally formed, which reduces the number of processing steps and thus improves the processing efficiency.

[0089] It should be noted that when both the connecting part 3222 and the connector part 3221 are plastic parts, they can be manufactured by injection molding; when both the connecting part 3222 and the connector part 3221 are metal parts, they can be manufactured by casting.

[0090] In some embodiments of this application, the connecting portion 3222 and the connector portion 3221 are separate structures. Specifically, when the connecting portion 3222 and the connector portion 3221 are separate structures, the connecting portion 3222 and the connector portion 3221 are processed separately and then assembled, thereby effectively reducing the difficulty of processing.

[0091] In some embodiments of this application, the connecting part 3222 and the connector part 3221 are separate structures, and the connection method between the connecting part 3222 and the connector part 3221 includes welding, bonding, screwing or snapping.

[0092] Specifically, by setting the connection method between the connecting part 3222 and the connector part 3221 of the split structure, the connection method can be selected according to the assembly needs, thereby improving the flexibility of the connection between the connecting part 3222 and the connector part 3221 and accelerating the production cycle.

[0093] In some embodiments of this application, such as Figures 4 to 6 As shown, the connector 3221 includes a first end 32211 and a second end 32212 arranged in opposite directions. The first end 32211 is connected to the valve body 321, and the second end 32212 is used to connect to the liquid injection device. The connecting part 3222 is a plate-shaped member, which is arranged around the outside of the connector 3221, and the plate-shaped member is spaced apart from the first end 32211 and the second end 32212 respectively.

[0094] Specifically, the connector 3221 is a tubular component, with a first end 32211 and a second end 32212 at the two axial ends of the tubular component. The first end 32211 is inserted into the valve body 321 (for example, the first end 32211 is inserted and fixed in the connecting hole 3212 of the valve body 321 (the two can be glued or threaded together), or the connecting end of the valve body 321 is inserted into the first end 32211). The plate-shaped connector 3222 is sleeved on the outer peripheral wall of the connector 3221 and is located between the first end 32211 and the second end 32212. The plate-shaped connector 3222 and the connector 3221 can be fixed by welding.

[0095] By setting the connecting part 3222 as a plate-shaped part and placing it between the first end 32211 and the second end 32212, space can be provided for connecting other components to the first end 32211 and the second end 32212, reducing the impact of the connecting part 3222 on the first end 32211 and the second end 32212, improving the convenience of connecting the first end 32211 to the valve body 321, and also improving the convenience of connecting the second end 32212 to the liquid injection device.

[0096] In addition, when the connecting part 3222 of the plate-shaped member is connected to the support frame 31, the large surface of the plate-shaped member (the surface with the largest area among the multiple outer surfaces) abuts against the support frame 31, thereby increasing the contact area with the support frame 31 and thus improving the connection strength.

[0097] Taking the connection part 3222 and the support frame 31 as an example of screw fixing, when the injection valve 32 is assembled onto the support frame 31, a through hole is opened on the support frame 31. The second end 32212 of the connector part 3221 is passed through the through hole until the plate-shaped connection part 3222 abuts against the support frame 31. Then, the plate-shaped connection part 3222 is fixed onto the support frame 31 by screws.

[0098] In some embodiments of this application, such as Figures 4 to 6 As shown, the outer peripheral wall of the connector portion 3221 is provided with a first protruding ring 32213 and a second protruding ring 32214. The first protruding ring 32213 and the second protruding ring 32214 are spaced apart between the second end 32212 and the connecting portion 3222. The first protruding ring 32213, the second protruding ring 32214 and the outer peripheral wall of the connector portion 3221 form an annular groove 32215. The annular groove 32215 is used to cooperate with the fasteners of the injection pipe of the fixed injection device.

[0099] A first protruding ring 32213 is formed on the outer surface of the connector portion 3221 and is coaxially arranged with the connector portion 3221. The first protruding ring 32213 can be integrally formed with the connector portion 3221, or it can be set on the outer surface of the connector portion 3221 through secondary processing (such as welding or bonding). Similarly, a second protruding ring 32214 is formed on the outer surface of the connector portion 3221 and is coaxially arranged with the connector portion 3221. The second protruding ring 32214 can be integrally formed with the connector portion 3221, or it can be set on the outer surface of the connector portion 3221 through secondary processing (such as welding or bonding).

[0100] Specifically, when the injection tube of the injection device is connected to the connector 3221, the injection tube is sleeved on the body of the connector 3221 located between the second end 32212 and the connecting part 3222. Fasteners (such as clamps) are clamped on the outside of the injection tube. After the fasteners are tightened, the injection tube located at the position of the annular groove 32215 is embedded in the annular groove 32215, thereby fixing the injection tube on the connector 3221.

[0101] The annular groove 32215 is provided. By cooperating with the fastener, the occurrence of liquid injection pipe detachment can be reduced, thereby enabling the liquid injection operation to be carried out effectively and reducing the occurrence of heat exchange medium leakage and overflow.

[0102] In some embodiments of this application, such as Figures 4 to 6 As shown, the first protruding ring 32213 is located further away from the connecting portion 3222 than the second protruding ring 32214, and the first protruding ring 32213 is narrowed along the direction from the second protruding ring 32214 to the first protruding ring 32213.

[0103] Specifically, by setting the first protruding ring 32213, it is easier to insert the first protruding ring 32213 into the injection tube of the injection device, thus improving the convenience of connection.

[0104] In some embodiments of this application, the valve body 321 is a ball valve. Ball valves have a simple structure, are easy to use, and can effectively reduce manufacturing costs.

[0105] like Figure 1 As shown, a second aspect of this application provides an energy storage device 100, which includes a housing 10, at least one battery cluster 20, and a heat exchange system 30 as described above, wherein at least one battery cluster 20 is disposed within the housing 10, and the heat exchange system 30 is disposed in the housing 10 and exchanges heat with at least one battery cluster 20.

[0106] Specifically, the injection valve 32 of the heat exchange system 30 is located in the medium flow path. When adding the heat exchange medium, the injection device is connected to the filling connector 322 of the injection valve 32 and the valve body 321 is opened, allowing the heat exchange medium to enter the medium flow path through the injection valve 32. After the heat exchange medium is added, the valve body 321 is closed, and the injection device and filling connector 322 are disconnected. Directly connecting the injection device to the injection valve 32 reduces the use of connecting pipelines, thereby reducing the problem of residual heat exchange medium.

[0107] It should be understood that in this application, the number of heat exchange components 33 can be one or two.

[0108] When there is only one heat exchange component 33, the heat exchange component 33 exchanges heat with the battery cluster 20 located inside the housing 20 so that the battery cluster 20 operates at a suitable temperature.

[0109] When there are two heat exchange components 33, the heat exchange medium circulating in the medium flow path of one heat exchange component 33 is refrigerant, and the heat exchange medium circulating in the medium flow path of the other heat exchange component 33 is coolant. The heat exchange component 33 circulating coolant is used to exchange heat with the battery cluster 20, and the heat exchange component 33 circulating refrigerant exchanges heat with the heat exchange component 33 circulating refrigerant.

[0110] like Figure 1 As shown, Figure 1 In the structure shown, there are two heat exchange components 33, namely the first heat exchange component 331 and the second heat exchange component 332. The heat exchange medium in the first heat exchange component 331 is refrigerant, that is, the first heat exchange component 331 is a refrigerant component, and the heat exchange medium in the second heat exchange component 332 is coolant, that is, the second heat exchange component 332 is a coolant component.

[0111] Specifically, the first heat exchange assembly 331 includes a first heat exchanger 3311 (e.g., a finned radiator or a plate heat exchanger), a compressor 3312, a throttling element 3313 (e.g., a tube or a throttling valve), and a second heat exchanger 3314 (e.g., a shell-and-tube heat exchanger or a plate heat exchanger). The second heat exchanger 3314 includes a first flow channel and a second flow channel, which are isolated from each other but can exchange heat with each other. The throttling element 3313, the first heat exchanger 3311, and the compressor 3312 are connected in series between the inlet and outlet of the first flow channel, thereby forming a medium flow path for refrigerant circulation. The second heat exchange component 332 includes a third heat exchanger 3321 (e.g., a finned radiator or a plate heat exchanger) and a drive pump 3322. The third heat exchanger 3321 is connected to the inlet and outlet of the second flow channel, thereby forming a medium flow path for coolant circulation. The drive pump 3322 is installed on the pipeline connecting the third heat exchanger 3321 and the second channel. The drive pump 3322 is used to drive the coolant to circulate between the third heat exchanger 3321 and the second flow channel. A liquid injection valve 32 is installed on the pipeline connecting the third heat exchanger 3321 and the second channel to add coolant.

[0112] When exchanging heat with the battery cluster 20, both the first heat exchange component 331 and the second heat exchange component 332 are in operation. The refrigerant circulates in the medium flow path formed by the first heat exchange component 331, and the coolant circulates in the medium flow path of the second heat exchange component 332. The refrigerant circulating to the first flow channel exchanges heat with the coolant circulating to the second flow channel. After heat exchange, the coolant enters the third heat exchanger 3321 and exchanges heat with the battery cluster 20 through the third heat exchanger 3321. After heat exchange with the battery cluster 20, the coolant circulates back to the second flow channel to exchange heat with the refrigerant again. After heat exchange with the coolant, the refrigerant circulates to the first heat exchanger 3311 to exchange heat with the outside air. After heat exchange with the first heat exchanger 3311, the refrigerant circulates back to the first flow channel to exchange heat with the coolant again.

[0113] In this application, the heat exchange system 30 can both heat and cool the battery cluster 20. When the current temperature of the battery cluster 20 is lower than a preset temperature range, the heat exchange system 30 heats the battery cluster 20; when the current temperature of the battery cluster 20 is higher than the preset temperature range, the heat exchange system 30 cools the battery cluster 20 (i.e., dissipates heat from the battery cluster 20).

[0114] The following example illustrates how heat exchange system 30 can be used to dissipate heat from battery cluster 20:

[0115] When the heat exchange system 30 exchanges heat with the battery cluster 20, driven by the compressor, the refrigerant exchanges heat with the air at the condenser (first heat exchanger 3311) (before heat exchange, the refrigerant is in a gaseous state; after heat exchange with the air, the refrigerant's temperature decreases, thus changing from a gaseous state to a liquid state). After heat exchange in the condenser (first heat exchanger 3311), the refrigerant enters the first flow channel of the evaporator (second heat exchanger 3314), where it exchanges heat with the coolant in the second flow channel of the evaporator. Before heat exchange, the refrigerant is in a liquid state. After exchanging heat with the coolant, the refrigerant's temperature rises, thus changing from a liquid state to a gas state (the coolant's temperature is lowered). The refrigerant flowing out of the evaporator flows back into the condenser for circulation. The coolant flowing out of the evaporator flows into the third heat exchanger 3321 and exchanges heat with the battery cluster 20 (after the coolant exchanges heat with the battery cluster 20, the temperature of the battery cluster 20 decreases, and the temperature of the coolant increases). The coolant after exchanging heat with the battery cluster 20 flows out of the third heat exchanger 3321 and returns to the evaporator for circulation.

[0116] In this application, the heat exchange system 30 can be installed inside the housing 10 or outside the housing 10.

[0117] In some embodiments of this application, the heat exchange system 30 is disposed outside the housing 10, and a heat exchanger for exchanging heat with the battery cluster 20 is disposed inside the housing 10. The heat exchanger is connected to the medium flow path of the heat exchange assembly 33. When the heat exchange assembly 33 is running, the heat exchange medium is circulated to the position of the heat exchanger and exchanges heat with the battery cluster 20 through the heat exchanger. By disposing of the heat exchange system 30 outside the housing 10, the space occupied inside the housing 10 can be reduced, thereby improving the space utilization rate of the housing 10.

[0118] In some embodiments of this application, the heat exchange system 30 is disposed inside the housing 10, such as... Figure 1 As shown, the first chamber 101 and the second chamber 102 of the housing 10 are isolated from each other. There is at least one battery cluster 20, which is disposed within the first chamber 101. A first heat exchange component 33 is disposed within the second chamber 102. A portion of the second heat exchange components 34 are disposed within the second chamber 102 and are thermally connected to the first heat exchange component 33, while another portion of the second heat exchange components 34 are disposed within the first chamber 101 and are thermally connected to the battery cluster 20. The second heat exchange components 34 exchange heat with the battery cluster 20, and the first heat exchange components 33 exchange heat with the second heat exchange components 34, thereby achieving heat exchange for the battery cluster 20. By placing the heat exchange system inside the housing 10, the influence of the external environment on the heat exchange system 30 can be reduced, thus minimizing the possibility of malfunctions in the heat exchange system 30 due to environmental factors (such as impacts).

[0119] In this application, the box 10 can be a simple three-dimensional structure such as a cuboid, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders, or spheres. The material of the box 10 can be alloy materials such as steel, iron, aluminum alloy, or ferroalloy, or polymer materials such as polycarbonate or polyisocyanurate foam, or composite materials such as glass fiber and epoxy resin.

[0120] The housing 200 of this application includes one or more battery clusters 20 to increase the voltage and capacity of the energy storage device 100. Each battery cluster 20 may include multiple battery devices connected in series via a busbar to increase the voltage of the energy storage device 100. When the energy storage device 100 includes multiple battery clusters 20, the multiple battery clusters 20 are connected in parallel to increase the capacity of the energy storage device 100.

[0121] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0122] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0123] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0124] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0125] As an example, the battery cell assembly can be a battery module, which can be housed in the housing body by fixing the battery module in the housing body.

[0126] As an example, battery cell assemblies can also be housed within the housing by directly fixing multiple battery cells to the housing body.

[0127] As an example, the box body may include a first part and a second part. The first part and the second part are fastened together to form a closed space inside the box body to house the battery cell assembly. Here, "closed" refers to covering or closing, which can be sealed or unsealed. The first part may be a top cover or a bottom plate.

[0128] As an example, the housing may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the housing to house the individual battery cells.

[0129] In some embodiments, when the battery pack is used in a vehicle, the pack body may be part of the vehicle's chassis structure. For example, a portion of the pack body may be at least a part of the vehicle's floor, or a portion of the pack body may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0130] In some embodiments, when there are multiple battery clusters 20, the multiple battery clusters 20 include two or more battery clusters 20. The multiple battery clusters 20 can be arranged regularly or irregularly in the first chamber 101. In this application, a bracket is provided inside the first chamber 101, and the battery clusters 20 are disposed on the bracket, so that the battery clusters 20 are arranged in a rectangular array in the first chamber 101, so that the first chamber 101 can accommodate a larger number of battery clusters 20, thereby increasing the energy density of the energy storage device 100.

[0131] A third aspect of this application provides an electrical appliance that includes an energy storage device 100 as described above.

[0132] The electrical equipment has the energy storage device 100 as described above. The beneficial effects of the energy storage device 100 are the same as those of the energy storage device 100 described above, and will not be repeated here.

[0133] It should be noted that, in this application, electrical equipment includes, but is not limited to, ships, cargo planes, passenger planes, or space shuttles.

[0134] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0135] In the embodiments of this application, such as Figures 2 to 6As shown, this application proposes a heat exchange system 30, which includes a heat exchange component. The heat exchange component forms a medium flow path for circulating heat exchange medium. The heat exchange component includes a liquid injection valve 32, which includes a valve body 321 and a filling connector 322. The valve body 321 is directly connected to the filling connector 322 and is connected to the medium flow path. The filling connector 322 is used to connect to a liquid injection device.

[0136] Furthermore, the filling connector 322 and the valve body 321 are separate structures, and the connection between the filling connector 322 and the valve body 321 is a screw connection.

[0137] Furthermore, the heat exchange system 30 also includes a housing and a support frame 31. The support frame 31 is disposed inside the housing. The first heat exchange component 33 and the second heat exchange component 34 are respectively disposed on the support frame 31. The charging connector 322 includes a connector portion 3221 and a connecting portion 3222. The connector portion 3221 is connected to the valve body 321, and the connecting portion 3222 is connected to the support frame 31. The connection between the connecting portion 3222 and the support frame 31 is a screw connection. The connecting portion 3222 and the connector portion 3221 are separate structures, and the connection between the connecting portion 3222 and the connector portion 3221 is welded.

[0138] Furthermore, the connector 3221 includes a first end 32211 and a second end 32212 arranged in opposite directions. The first end 32211 is connected to the valve body 321, and the second end 32212 is used to connect to the injection device. The connecting part 3222 is a plate-shaped piece, which is sleeved on the outside of the connector 3221, and the plate-shaped piece is spaced apart from the first end 32211 and the second end 32212. The outer peripheral wall of the connector 3221 is provided with a first protruding ring 32213 and a second protruding ring 32214, which are spaced apart between the second end 32212 and the connecting part 3222. The first protruding ring 32213, the second protruding ring 32214 and the outer peripheral wall of the connector 3221 form an annular groove 32215, which is used to cooperate with the fasteners of the injection pipe of the injection device. The first protruding ring 32213 is located further away from the connecting portion 3222 than the second protruding ring 32214. Along the direction from the second protruding ring 32214 to the first protruding ring 32213, the first protruding ring 32213 is narrowed.

[0139] Specifically, the injection valve 32 is located in the medium flow path. When adding the heat exchange medium, the injection device is connected to the filling connector 322 of the injection valve 32, and the valve body 321 is opened, allowing the heat exchange medium to enter the medium flow path through the injection valve 32. After the heat exchange medium is added, the valve body 321 is closed, and the injection device and the filling connector 322 are separated. By connecting the filling connector 322 to the valve body 321, there is no need to set up a connecting pipeline between the filling connector 322 and the valve body 321, reducing the use of connecting pipelines and thus reducing the problem of heat exchange medium residue in the connecting pipelines.

[0140] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat exchange system, characterized by, The heat exchange system comprises a heat exchange assembly, the heat exchange assembly is formed with a medium flow path for circulating a heat exchange medium, the heat exchange assembly comprises a liquid filling valve, the liquid filling valve comprises a valve body and a filling connector, the valve body is directly connected with the filling connector, the valve body is in communication with the medium flow path, and the filling connector is used to be connected with a liquid filling device.

2. The heat exchange system of claim 1, wherein, The filling connector and the valve body are in an integral structure.

3. The heat exchange system of claim 1, wherein, The filling connector and the valve body are in a split structure, and the connection mode between the filling connector and the valve body comprises welding, bonding, screwing or clamping.

4. The heat exchange system according to claim 1 or 2, wherein The heat exchange system further comprises a shell and a support frame, the support frame is arranged in the shell, the filling connector comprises a connector part and a connecting part, the connector part is connected with the valve body, and the connecting part is connected with the support frame.

5. The heat exchange system of claim 4, wherein, The connecting part and the connector part are in an integral structure, or the connecting part and the connector part are in a split structure.

6. The heat exchange system of claim 5, wherein, The connecting part and the connector part are in a split structure, and the connection mode between the connecting part and the connector part comprises welding, bonding, screwing or clamping.

7. The heat exchange system of claim 4, wherein, The connection mode between the connecting part and the support frame comprises welding, bonding, screwing, clamping or connection through a connecting piece.

8. The heat exchange system of claim 4, wherein, The connector part comprises a first end part and a second end part, the first end part is connected with the valve body, the second end part is used to be connected with the liquid filling device, the connecting part is a plate-shaped piece, the plate-shaped piece is arranged on the outer side of the connector part in a ring shape, and the plate-shaped piece is arranged in a spaced manner with the first end part and the second end part respectively.

9. The heat exchange system of claim 8, wherein, First and second convex rings are arranged on the outer peripheral wall of the connector part, the first and second convex rings are arranged in a spaced manner between the second end part and the connecting part, the first and second convex rings and the outer peripheral wall of the connector part enclose an annular groove, and the annular groove is used to cooperate with a fastener of a liquid filling pipe of the liquid filling device.

10. The heat exchange system of claim 9, wherein, The first convex ring is arranged farther away from the connecting part than the second convex ring, and the first convex ring is arranged in a narrowing manner in the direction from the second convex ring to the first convex ring.

11. The heat exchange system of any one of claims 1 to 3, wherein The valve body is a ball valve.

12. An energy storage device, characterized by The energy storage device comprises: a box body; at least one battery cluster arranged in the box body; the heat exchange system according to any one of claims 1 to 11 is arranged in the box body and exchanges heat with the at least one battery cluster.

13. An electrical device, characterized by The power consumption device comprises the energy storage device according to claim 12.

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