CHARGING AND DISCHARGE DEVICE

Abstract

A charging and discharging device includes a charging and discharging mechanism, the charging and discharging mechanism comprising a storage cavity and a charging and discharging module located inside the storage cavity; a temperature control mechanism, the temperature control mechanism comprising a heat exchange chamber, a liquid heat exchange component and an electric heating component located in the heat exchange chamber, the liquid heat exchange component being provided with a channel through which a liquid flows at a setpoint temperature, and the heating temperature of the electric heating component being higher than the setpoint temperature;The heat exchange chamber is connected to the storage cavity, so that a heat exchange fluid in the storage cavity enters the heat exchange chamber for heat exchange with the liquid heat exchange component and / or the electric heating component, and the heat exchange fluid after heat exchange enters the storage cavity.

Description

Title of the invention: RECHARGING AND DISCHARGING DEVICE Technical field

[0001] The present application relates to the technical field of training and classification equipment, and in particular a recharging and discharging device. STATE OF THE ART

[0002] Forming is an important step in the manufacturing process of lithium batteries. Its main function is to activate lithium batteries for the first time and generate a solid electrolyte interface (SEI) film on the negative electrode surface of the lithium batteries. Classification involves recharging and discharging the formed batteries, and distinguishing a battery capacity, a recharging constant current ratio, a discharging platform voltage, and an internal resistance to classify and group them. The constancy of the ambient temperature of the storage location where the recharging and discharging device (i.e., the capacity forming and separating equipment) is located is beneficial to improve the stability of battery performance. The more constant the temperature, the better the consistency of the battery.

[0003] In the relevant technologies, the control of the ambient temperature of the storage place is generally realized by the heat exchange of water. In particular, the existing charging and discharging device is equipped with low-temperature water pipes and high-temperature water pipes. When the ambient temperature of the storage place is lower than the target temperature and the low-temperature water temperature, the low-temperature water is used for heat exchange and heating. When the ambient temperature of the storage place is higher than the low-temperature water temperature and lower than the target temperature and the high-temperature water temperature, the low-temperature water cannot meet the requirement on heat exchange and heating. In this case, the high-temperature water can be used for heat exchange and heating.

[0004] However, because the existing recharge and discharge device is configured to have two sets of pipes for transporting water at different temperatures, the two sets of pipes will not only increase the complexity of pipe laying, but also increase the cost of pipe laying and maintenance. DISCLOSURE OF THE INVENTION

[0005] In view of the above-mentioned disadvantages in the prior art, the present application provides a recharging and discharging device for solving the problem in the prior art, namely the increase in the complexity of pipe laying and the increase in the costs of pipe laying and maintenance caused by the configuration of two sets of pipes for transporting water at different temperatures.

[0006] To solve the technical problem mentioned above, according to a first aspect, the present application provides a recharging and discharging device, comprising: - a recharging and discharging mechanism, the recharging and discharging mechanism comprising a storage cavity and a recharging and discharging module located inside the storage cavity; - a temperature control mechanism, the temperature control mechanism comprising a heat exchange chamber, a liquid heat exchange component and an electric heating component located in the heat exchange chamber, the liquid heat exchange component being provided with a channel through which a liquid at a set temperature flows, and a heating temperature of the electric heating component being higher than the set temperature; - the heat exchange chamber is connected to the storage cavity, so that a heat exchange fluid in the storage cavity enters the heat exchange chamber for heat exchange with the liquid heat exchange component and / or the electric heating component, and the heat exchange fluid after the heat exchange enters the storage cavity.

[0007] According to an embodiment of the first aspect, the heat exchange fluid has a first temperature, the set temperature is higher than the first temperature but lower than the heating temperature of the electric heating component, the liquid heat exchange component is configured to heat the heat exchange fluid and the electric heating component is configured to heat the heat exchange fluid heated by the liquid heat exchange component.

[0008] According to an embodiment of the first aspect, the heat exchange fluid has a second temperature, and the set temperature is lower than the second temperature; the liquid heat exchange component is further configured to cool the heat exchange fluid.

[0009] According to an embodiment of the first aspect, the set temperature is lower than the temperature of the heat exchange fluid, wherein the liquid heat exchange component is configured to cool the heat exchange fluid, and the heating temperature of the electric heating component is higher than the temperature of the heat exchange fluid, wherein the electric heating component is configured to heat the heat exchange fluid.

[0010] According to an embodiment of the first aspect, the electric heating component comprises a positive temperature coefficient heat exchange component.

[0011] According to an embodiment of the first aspect, a first connection structure is provided between the heat exchange chamber and the storage cavity, the first connection structure is configured to allow the heat exchange fluid in the storage cavity to enter the heat exchange chamber; a second connection structure is provided between the heat exchange chamber and the storage cavity, the second connection structure is configured to allow the heat exchange fluid after the heat exchange to enter the storage cavity.

[0012] According to an embodiment of the first aspect, the heat exchange fluid is transported to the heat exchange chamber in a first direction, the first connection structure is located upstream of the liquid heat exchange component and the electric heating component in the first direction, and the second connection structure is located downstream of the liquid heat exchange component and the electric heating component in the first direction.

[0013] According to an embodiment of the first aspect, the liquid heat exchange component is disposed close to the first connection structure, and the electric heating component is disposed on a side of the liquid heat exchange component away from the first connection structure.

[0014] According to an embodiment of the first aspect, at least one of the first connection structure and the second connection structure comprises a transport component for providing energy to transport the heat exchange fluid.

[0015] According to an embodiment of the first aspect, at least one of the first connection structure and the second connection structure comprises a transport component, and the other is a connection hole.

[0016] According to an embodiment of the first aspect, the recharging and discharging module comprises a module frame and a recharging and discharging component located within the module frame, the heat exchange fluid comprises a gas and the transport component comprises a fan.

[0017] According to an embodiment of the first aspect, the temperature control mechanism further comprises a controller component for controlling the on / off state of the liquid heat exchange component and the electric heating component.

[0018] Compared with the prior art, the present application has at least the following technical effects:

[0019] In the present application, because the heat exchange chamber is connected to the storage cavity and the liquid heat exchange component and the electric heating component are both located inside the heat exchange chamber, the liquid heat exchange component and / or the electric heating component can exchange heat with the heat exchange fluid after the fluid in the storage cavity enters the heat exchange chamber. This process can regulate the temperature of the heat exchange fluid. After the heat exchange with the liquid heat exchange component and / or the electric heating component, the heat exchange fluid at the changed temperature can re-enter the storage cavity.Thus, the heat exchange fluid, once its temperature is adjusted, regulates the ambient temperature inside the storage cavity to meet the process requirements necessary for the recharge and discharge module inside the storage cavity.

[0020] Compared with the prior art, the present application provides a significant technical effect. Since the channel inside the liquid heat exchange component allows the set temperature liquid to flow and the electric heating component has a heating temperature higher than the set temperature, in the case where the set temperature of the liquid in the liquid heat exchange component is insufficient to meet the heating requirements of the heat exchange fluid, the electric heating component can provide supplemental heating. Therefore, the heated heat exchange fluid can raise the ambient temperature in the storage cavity.Furthermore, because only one liquid at the set temperature is to be supplied to the liquid heat exchange component, the technical solution of the present application requires only one piping system to transport the liquid at the set temperature to the liquid heat exchange component. There is no need to provide two separate piping systems to transport liquids at different temperatures, thereby reducing the complexity of piping installation and reducing costs.

[0021] BRIEF DESCRIPTION OF THE FIGURES

[0022] The technical solutions of the embodiments of the present application will be illustrated more clearly through the following brief description of the appended figures necessary for the embodiments. Obviously, the figures in the description below are only a part of the embodiments of the present request. Other figures can be obtained by those skilled in the art based on the figures without creative work.

[0023] [Fig. 1] is the first schematic diagram of the recharging and discharging device provided in an embodiment of the present application;

[0024] [Fig.2] is the second schematic diagram of the recharging and discharge provided in one embodiment of the present application;

[0025] [Fig.3] is a third schematic diagram of the recharging and discharge provided in one embodiment of the present application;

[0026] [Fig.4] is a fourth schematic diagram of the recharging and discharge provided in one embodiment of the present application;

[0027] [Fig.5] is a flow diagram of the temperature control of the charging device and discharge provided in one embodiment of the present application.

[0028] Reference notes: 1- charging and discharging device; 11- storage cavity; 12- charging and discharging module; 121- module frame; 122- charging and discharging component; 123- housing; 13- storage housing; 2- temperature control mechanism; 21- heat exchange chamber; 22- liquid heat exchange component; 23- electric heating component; 24- heat exchange housing; 3- first connection structure; 4- second connection structure; and 5- transport component.

[0029] DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

[0030] The technical solutions in the embodiments of the present application will be described hereinafter clearly and completely with reference to the figures in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, instead of all the embodiments. Based on the embodiments of the present application, any other embodiments obtained by a person skilled in the art without creative work should be included within the scope of protection of the present application.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like, which indicate an orientation or positional relationship, are based on the orientation or positional relationship shown in the figures. These terms are primarily to better describe the present application and its embodiments, instead of limiting the devices, elements or components in question to achieve a specific orientation, or to be constructed and operated in a specific orientation.

[0032] In addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings. For example, the term "above" may also be used to indicate a certain dependency or connection relationship in certain cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application may be understood according to the specific situations.

[0033] Furthermore, the terms "arrange", "arrange", "provided with", "connection" and "connected" are to be understood in a broad sense. For example, it may be a fixed connection, a removable connection or an integral structure; it may be a mechanical connection or an electrical connection; it may be a direct connection, an indirect connection through an intermediate support or an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application may be understood according to the specific situations.

[0034] Furthermore, the terms "first", "second" and others are primarily used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply a relative importance and quantity of the indicated devices, elements or components. Unless otherwise indicated, "multiple" means two or more.

[0035] As described in the context of the present application, in the art, forming is an important step in the lithium battery manufacturing process and its main function is to activate the lithium battery for the first time and generate a solid electrolyte interface (SEI) film on the negative electrode surface of the lithium battery. Classification involves recharging and discharging the formed battery, and distinguishing a battery capacity, a recharging constant current ratio, a discharging platform voltage and a statistical internal resistance, in order to classify and group them. The constancy of the ambient temperature of the storage location where the recharging and discharging device (i.e., the forming and classifying equipment) is located helps to improve the stability of the battery performance. The more constant the temperature, the better the consistency of the battery.

[0036] In the existing art, the control of the ambient temperature of the storage place is generally realized by the heat exchange of water. In particular, the existing charging and discharging device is equipped with a low-temperature water pipe and a high-temperature water pipe. When the ambient temperature of the storage place is lower than the target temperature and the temperature of the low-temperature water, the low-temperature water is used for heat exchange. and heating. When the ambient temperature of the storage location is higher than the low-temperature water temperature and lower than the target temperature and high-temperature water temperature, the low-temperature water cannot meet the requirement for heat exchange and heating. In this case, the high-temperature water can be used for heat exchange and heating.

[0037] However, because the existing recharge and discharge device is generally equipped with two sets of pipelines for transporting water at different temperatures, the two sets of pipelines will not only increase the complexity of pipeline laying, but also increase the cost of pipeline laying and maintenance.

[0038] In view of the above-mentioned problems, the present application provides a recharging and discharging device for solving the problem of increasing the complexity of pipe laying and increasing the cost of pipe laying and maintenance caused by configuring two sets of pipes for transporting water at different temperatures in the art.

[0039] The technical solution of the present application will be described in more detail below through the following specific embodiments and figures:

[0040] As shown in [Fig. 1], the charging and discharging device comprises a charging and discharging mechanism 1 and a temperature control mechanism 2, wherein the charging and discharging mechanism 1 comprises a storage cavity 11 and a charging and discharging module 12 located inside the storage cavity 11. The temperature control mechanism 2 comprises a heat exchange chamber 21, a liquid heat exchange component 22 disposed in the heat exchange chamber 21, and an electric heating component 23. A channel through which a liquid at a set temperature flows is provided in the liquid heat exchange component 22, and the heating temperature of the electric heating component 23 is higher than the above-mentioned set temperature.

[0041] The heat exchange chamber 21 is connected to the storage cavity 11, so that a heat exchange fluid in the storage cavity 11 enters the heat exchange chamber 21 for exchanging heat with the liquid heat exchange component 22 and / or the electric heating component 23, and the heat exchange fluid after the heat exchange enters the storage cavity 11.

[0042] In the present application, because the heat exchange chamber 21 is connected to the storage cavity 11 and the liquid heat exchange component 22 and the electric heating component 23 are both located inside the heat exchange chamber 21, the liquid heat exchange component 22 and / or the electric heating component 23 can exchange heat with the heat exchange fluid after the fluid in the storage cavity 11 enters the heat exchange chamber 21. This process can regulate the temperature of the heat exchange fluid. After the heat exchange with the liquid heat exchange component 22 and / or the electric heating component 23, the temperature-changed heat exchange fluid can re-enter the storage cavity 11. The heat exchange fluid, once its temperature is adjusted, can regulate the ambient temperature inside the storage cavity 11 to meet the process requirements necessary for the recharging and discharging module 12 inside the storage cavity 11.

[0043] Compared with the prior art, the solution provides a significant technical effect. Since the liquid at the designated temperature flows through the channel inside the liquid heat exchange component 22 and the electric heating component 23 has a heating temperature higher than the set temperature of the liquid flowing through the liquid heat exchange component 22, if the set temperature of the liquid in the liquid heat exchange component 22 is insufficient to meet the heating requirements of the heat exchange fluid, the electric heating component 23 can provide additional heating. Therefore, the heated heat exchange fluid can raise the ambient temperature in the storage cavity.Furthermore, because only one set temperature liquid is to be supplied to the liquid heat exchange component 22, the present application requires only one piping system to transport the set temperature liquid to the liquid heat exchange component 22. There is no need to provide two separate piping systems to transport liquids at different temperatures, which helps to reduce the complexity of piping and reduce the costs of piping.

[0044] With respect to the liquid heat exchange component 22, according to the preferred embodiment, the liquid heat exchange component 22 is a tubular fin heat exchanger. Since tubular fin heat exchangers provide high heat exchange efficiency, configuring the liquid heat exchange component 22 as a tubular fin heat exchanger improves its efficiency, thereby improving the heat exchange performance between the liquid heat exchange component 22 and the heat exchange fluid.

[0045] According to other embodiments, the liquid heat exchange component 22 may also be a shell-and-tube heat exchanger. Given the low cost and ease of maintenance of shell-and-tube heat exchangers, the use of Such a configuration for the liquid heat exchange component 22 allows for reduced costs and easier cleaning and maintenance.

[0046] As for the liquid flowing in the channel inside the liquid heat exchange component 22, it may comprise water, solutions or waste liquids containing impurities. The choice of the type of liquid is flexible and can be determined according to practical requirements, and the details thereof are not described in the present application.

[0047] With regard to the heating temperature of the electric heating component 23, it is important to clarify that this temperature refers to the temperature at which the electric heating component 23 has converted electrical energy into thermal energy, instead of the initial temperature of the electric heating component 23 itself.

[0048] For the liquid heat exchange component 22 and the electric heating component 23, according to some embodiments, the heat exchange fluid has a first temperature, the set temperature is higher than the first temperature but lower than the heating temperature of the electric heating component 23, the liquid heat exchange component 22 is used to heat the heat exchange fluid, and the electric heating component 23 is configured to heat the heat exchange fluid heated by the liquid heat exchange component 22.

[0049] After the liquid heat exchange component 22 has heated the heat exchange fluid, the electric heating component 23 is used to further heat the heat exchange fluid. Thus, the liquid heat exchange component 22 and the electric heating component 23 can be used on the one hand to raise the temperature of the heat exchange fluid so that the temperature of the heat exchange fluid reaches the required temperature, and on the one hand to reduce the heating time of the electric heating component 23, that is, the working time of the electric heating component 23 can be reduced, which contributes to reducing the energy consumption of the electric heating component 23 and reducing costs.

[0050] According to a preferred embodiment, for the recharging and discharging device, whether feeding (i.e., when the device is in a forming process) or not, the ambient storage temperature in the storage cavity 11 must be kept constant at 45+3°C, and the channel in the liquid heat exchange component 22 must allow water at 40°C to flow therethrough. When the recharging and discharging device is first activated, the ambient temperature of the storage location does not exceed 40°C and has a significant temperature difference from 40°C. In this case, the temperature of the heat exchange fluid is the first temperature, that is, the first temperature does not exceed 40°C. After the heat exchange fluid enters the heat exchange chamber 21 from the storage cavity 11, only the liquid heat exchange component 22 is used to heat the heat exchange fluid, so that the temperature of the heat exchange fluid rises, thereby saving energy; when the ambient temperature of the storage location does not exceed 40°C and has a small temperature difference from 40°C, the temperature of the heat exchange fluid is also the first temperature, and the electric heating component 23 is turned on, and the heat exchange fluid heated by the liquid heat exchange component 22 is heated by the electric heating component 23.

[0051] When the ambient temperature of the storage location exceeds 40°C, the temperature of the heat exchange fluid is not the first temperature, the liquid heat exchange component 22 is not used, and only the electric heating component 23 is used to heat the heat exchange fluid; when the ambient temperature of the storage location reaches about 45°C, the electric heating component 23 is turned off. In this case, the ambient temperature of the storage location can meet the process requirements of the charging and discharging module 12.In addition, in order to reduce the natural heat dissipation, a thermal insulation design is also made for the charging and discharging device, which can reduce the surface temperature of a storage area, and then reduce the difference between the surface temperature of the charging and discharging mechanism and the workshop environment, which is beneficial to reduce the natural heat dissipation of the charging and discharging device and helps to keep the ambient temperature of the storage area at about 45°C.

[0052] Further, the heat exchange fluid also has a second temperature, and the set temperature is lower than the second temperature; the liquid heat exchange component 22 is also configured to cool the heat exchange fluid.

[0053] Thus, on the basis of heating the heat exchange fluid by a combination of liquid heating and electric heating, the liquid heat exchange component 22 can also be used to cool the heat exchange fluid when the temperature of the heat exchange fluid is higher than the above-mentioned set temperature, so that the liquid heat exchange component 22 can cool down in a high-temperature environment, and the liquid in the liquid heat exchange component 22 after being heated by the heat exchange fluid can also be used for other heating purposes, thereby reducing the energy consumption of the boiler and utilizing effectively the thermal load of the storage location, thus helping to reduce the workshop's operating costs and achieve the objective of saving energy and reducing consumption.

[0054] According to a preferred embodiment, when the ambient temperature of the storage location exceeds 45°C and there is a large temperature difference from 45°C, the temperature of the heat exchange fluid is the second temperature, i.e., the second temperature exceeds 45°C, and the liquid heat exchange component 22 through which the 40°C water flows has a cooling capacity, and the liquid heat exchange component 22 is activated to cool the heat exchange fluid, so as to reduce the ambient temperature of the storage location, and the heat generated in the storage cavity 11 can heat the water in the liquid heat exchange component 22 to assist the hot water boiler.

[0055] For the liquid heat exchange component 22 and the electric heating component 23, according to some embodiments, the above-mentioned set temperature is lower than the temperature of the heat exchange fluid, and the liquid heat exchange component 22 is used for cooling the heat exchange fluid; and the heating temperature of the electric heating component 23 is higher than the temperature of the heat exchange fluid, and the electric heating component 23 is used for heating the heat exchange fluid.

[0056] Thus, water cooling and electric heating are used to cool and heat the storage ambient temperature respectively, thereby simplifying the operation of raising and lowering the storage ambient temperature, and thus facilitating the control of the storage ambient temperature.

[0057] According to the preferred embodiment, the ambient storage temperature in the storage cavity 11 is to be kept constant at about 25°C, and the temperature of the water flowing through the liquid heat exchange component 22 is lower than 25°C. When the ambient storage temperature is lower than 25°C, because the liquid heat exchange component 22 cannot be used to raise the ambient storage temperature to 25°C, the electric heating component 23 can be used to raise the ambient storage temperature to 25°C, thereby facilitating the raising of the ambient storage temperature. When the ambient storage temperature is higher than 25°C, the liquid heat exchange component 22 through which water at a temperature lower than 25°C flows can be used to lower the ambient storage temperature to 25°C, thereby facilitating the lowering of the ambient storage temperature. 。

[0058] For the electric heating component 23, further, in the preferred embodiment, the electric heating component 23 is a positive temperature coefficient (PTC) heat exchange component.

[0059] With the help of such adjustment, the storage ambient temperature can be controlled by using a combination of liquid temperature control and PTC temperature control, and because the PTC heat exchange component is an automatic constant temperature heat exchange device, it is beneficial to improve the accuracy of storage ambient temperature control. Meanwhile, because the PTC heat exchange component has low power consumption and long service life, it can also reduce the power consumption of the electric heating component 23, prolong its service life and thus reduce costs.

[0060] According to other embodiments, the electric heating component 23 may also be an electromagnetic heating component. Configuring the electric heating component 23 as an electromagnetic heating component facilitates the electric heating component 23 to heat the heat exchange fluid.

[0061] As shown in [Fig.l], a first connection structure 3 is provided between the heat exchange chamber 21 and the storage cavity 11, the first connection structure 3 is used to allow the heat exchange fluid in the storage cavity 11 to enter the heat exchange chamber 21; a second connection structure 4 is also provided between the heat exchange chamber 21 and the storage cavity 11, and the second connection structure 4 is used to allow the heat exchange fluid after the heat exchange to enter the storage cavity 11.

[0062] Thus, the configuration of the connection between the heat exchange chamber 21 and the storage cavity 11 is optimized. By arranging the first connection structure 3 and the second connection structure 4, the heat exchange fluid can enter the heat exchange chamber 21 and the storage cavity 11 through different connection structures, respectively, which avoids the interference of the heat exchange fluid entering the heat exchange chamber 21 with the heat exchange fluid entering the storage cavity 11, thereby ensuring the temperature of the heat exchange fluid after the heat exchange.

[0063] In other embodiments, one, three or more connection structures may be provided between the heat exchange chamber 21 and the storage cavity 11, and the number of connection structures may be flexibly set. In particular, it may be set according to actual use requirements, and the details thereof will not be described in the embodiment of this application.

[0064] With respect to the positional relationship, further, as shown in [Fig.l], the heat exchange fluid is transported to the heat exchange chamber 21 in the first direction (the direction indicated by the arrow in the heat exchange chamber 21 in [Fig.l], and the first connection structure 3 is located upstream of the liquid heat exchange component 22 and the electric heating component 23 in the first direction, and the second connection structure 4 is located downstream of the liquid heat exchange component 22 and the electric heating component 23 in the first direction.

[0065] Thus, the positional relationship between the first connection structure 3 as well as the second connection structure 4 and the liquid heat exchange component 22 as well as the electric heating component 23 is optimized, so that the heat exchange fluid can complete the heat exchange with the liquid heat exchange component 22 and the electric heating component 23 in the process of passing from the first connection structure 3 to the second connection structure 4, which can shorten the flow time of the heat exchange fluid in the heat exchange chamber 21 to a certain extent and be beneficial to improve the efficiency.

[0066] In addition, as shown in [Fig.l], the liquid heat exchange component 22 is disposed close to the first connection structure 3, and the electric heating component 23 is disposed on a side of the liquid heat exchange component 22 away from the first connection structure 3.

[0067] The liquid heat exchange component 22 is arranged close to the first connection structure 3, so that the heat exchange fluid can directly exchange heat with the liquid heat exchange component 22 after entering the heat exchange chamber 21 through the first connection structure 3, which can contribute to improving the heating or cooling efficiency of the heat exchange fluid. The electric heating component 23 is arranged on one side of the liquid heat exchange component 22 away from the first connection structure 3, which optimizes the positional relationship between the electric heating component 23 and the liquid heat exchange component 22, and facilitates the electric heating component 23 to heat the heat exchange fluid after being heated by the liquid heat exchange component 22.

[0068] For the first connection structure 3 and the second connection structure 4, further, at least one of the first connection structure 3 and the second connection structure 4 comprises a transport component 5, and the transport component transport 5 is used to provide energy to transport the heat exchange fluid.

[0069] The energetic supply for transporting the heat exchange fluid through the transport component 5 is beneficial on the one hand to facilitate the heat exchange fluid to enter the heat exchange chamber 21 or the storage cavity 11 through the connection structure where the transport component 5 is located, and on the other hand to increase the flow rate of the heat exchange fluid, thereby improving the heat exchange effect between the heat exchange fluid and the recharging and discharging module 12.

[0070] Further, one of the first connection structure 3 and the second connection structure 4 comprises a transport component 5, and the other is a connection hole.

[0071] Thus, the transport component 5 can on the one hand supply energy to the heat exchange fluid to enter the heat exchange chamber 21 from the storage cavity 11, and on the other hand supply energy to the heat exchange fluid to enter the storage cavity 11 from the heat exchange chamber 21. At the same time, such a configuration also makes it possible to reduce the number of transport components 5, which is beneficial for reducing costs.

[0072] According to a preferred embodiment, as shown in [Fig.l], the first connection structure 3 is a connection hole, and the second connection structure 4 comprises a conveying component 5. Thus, the arrangement of the conveying component 5 is beneficial for increasing the flow rate at which the heat exchange fluid enters the storage cavity 11 from the heat exchange chamber 21, which is beneficial for reducing the heat loss of the heat exchange fluid after the heat exchange, and thus is beneficial for ensuring the effect of the regulation of the heat exchange fluid on the storage ambient temperature.

[0073] According to another embodiment, as shown in [Fig. 2], the first connection structure 3 comprises a conveying component 5 and the second connection structure 4 is a connecting hole. Thus, it is possible to increase the flow rate at which the heat exchange fluid enters the heat exchange chamber 21 from the storage cavity 11, which is then beneficial for improving the heat exchange effect between the heat exchange fluid and the liquid heat exchange component 22 as well as the electric heating component 23.

[0074] In other embodiments, the first connection structure 3 and the second connection structure 4 may both be vias, or the first connection structure 3 and the second connection structure 4 may both comprise a transport component 5. The structural configuration of the first connection structure 3 and the second connection structure 4 is relatively flexible and in particular, it can be determined according to the actual use, and the details thereof will not be described in the embodiment of the present application.

[0075] For the recharging and discharging module 12, further, according to a preferred embodiment, the recharging and discharging module 12 comprises a module frame 121 and a recharging and discharging component 122 located in the module frame 121, the heat exchange fluid comprises a gas and the transport component 5 comprises a fan.

[0076] With the help of such a configuration, the gas acting as a heat exchange fluid is able to directly contact the charging and discharging component through the module frame 121 for heat exchange, which contributes to improving the heat exchange effect between the charging and discharging module 12 and the heat exchange fluid. In addition, the fan facilitates the transportation of the gas as a heat exchange fluid.

[0077] According to another embodiment, as shown in [Fig. 3], the charging and discharging module 12 comprises a closed housing 123, and the charging and discharging component 122 is located in the housing 123. In this case, the heat exchange fluid may be a liquid, and the transport component 5 is a transport pump. Thus, the heat exchange between the charging and discharging module 12 is carried out using the liquid, which helps to improve the heat exchange effect between the charging and discharging module 12 and the heat exchange fluid. At the same time, the transport pump facilitates the transport of the liquid as the heat exchange fluid.

[0078] In a preferred embodiment, the temperature control mechanism 2 also comprises a controller component (not shown in the figure), and the controller component is used to control the activation or deactivation of the liquid heat exchange component 22 and the electric heating component 23.

[0079] The controller component controls the activation or deactivation of the liquid heat exchange component 22 and the electric heating component 23, which facilitates switching between the activation and deactivation of the liquid heat exchange component 22 and the electric heating component 23, and further facilitates the control of the heat exchange between the liquid heat exchange component 22 as well as the electric heating component 23 and the heat exchange fluid.

[0080] It should be noted that the controller component may only comprise one controller, i.e., the liquid heat exchange component 22 and the electric heating component 23 are controlled to be activated or deactivated by a single controller; of course, the controller component may also comprise two controllers, i.e., the liquid heat exchange component 22 and the electric heating component 23 are controlled to be turned on or off by two controllers respectively.

[0081] As shown in [Fig.l], according to a preferred embodiment, the recharging and discharging mechanism 1 comprises a storage housing 13, which is used to enclose a storage cavity 11; the temperature control mechanism 2 comprises a heat exchange housing 24, which is used to enclose a heat exchange chamber 21 together with the storage housing 13.

[0082] The storage housing 13 and the heat exchange housing 24 facilitate the closing of the storage cavity 11 and the heat exchange chamber 21. At the same time, the heat exchange housing 24 and the storage housing 13 enclose the heat exchange chamber 21, which can reduce the size of the housings to a certain extent, reduce the material used for the housing, and thus contribute to reducing costs.

[0083] According to another embodiment, as shown in [Fig.4], the storage housing 13 is used to enclose the storage cavity 11, and the heat exchange housing 24 is used to enclose the heat exchange chamber 21. By using the storage housing 13 and the heat exchange housing 24 to separately enclose the corresponding storage cavity 11 and heat exchange chamber 21, the influence of other housings on the airtightness of the storage cavity 11 and the heat exchange chamber 21 can be reduced to a certain extent, which helps to ensure the airtightness of the storage cavity 11 and the heat exchange chamber 21.

[0084] A temperature control method of the recharging and discharging device according to the embodiment of the present application is as follows:

[0085] As shown in [Fig. 5], when the charging and discharging device is firstly activated, the ambient temperature of the storage location does not exceed 35°C. In this case, only the liquid heat exchange component 22 is activated to heat the heat exchange fluid; after the liquid heat exchange component 22 has performed heating for a period, when the ambient temperature of the storage location is higher than 35°C and does not exceed 40°C, the electric heating component 23 is activated, the heat exchange fluid is heated together by the electric heating component 23 and the liquid heat exchange component 22, and the electric heating component 23 heats the heat exchange fluid heated by the liquid heat exchange component 22.

[0086] As shown in [Fig.5], after the electric heating component 23 and the liquid heat exchange component 22 have together performed heating for a period of time, when the ambient temperature of the storage location is higher than 40°C and does not exceed 45°C, the heat exchange component liquid 22 through which water at 40°C flows has no heating effect on the heat exchange fluid, the liquid heat exchange component 22 is turned off and only the electric heating component 23 is used to heat the heat exchange fluid. After the electric heating component 23 has performed heating for a period, when the storage ambient temperature is higher than 45°C and does not exceed 46°C, since the storage ambient temperature is within a temperature range required by the process of the charging and discharging module 12, no further heating is required, thus, the electric heating component 23 is turned off again.

[0087] During the formation process, a large current is used to recharge the lithium battery. The lithium battery, power cables, probes and others in the storage all generate heat, and the storage ambient temperature gradually rises. As shown in [Fig.5], when the storage ambient temperature rises to above 46°C, the liquid heat exchange component 22 through which the 40°C water flows has the cooling capability. The liquid heat exchange component 22 is activated to cool the heat exchange fluid to lower the storage ambient temperature, so that the storage ambient temperature is maintained at 45±2°C.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, instead of limiting it. Although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art will understand that they can always modify the technical solutions described in the above-mentioned embodiments, or replace all or part of their technical features with equivalents. However, such modifications or replacements do not cause any deviation from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

Claims

1. A charging and discharging device, characterized in that the charging and discharging device comprises: - a charging and discharging mechanism, the charging and discharging mechanism comprising a storage cavity and a charging and discharging module located inside the storage cavity; - a temperature control mechanism, the temperature control mechanism comprising a heat exchange chamber, a liquid heat exchange component and an electric heating component located in the heat exchange chamber, wherein the liquid heat exchange component is provided with a channel through which a liquid at a set temperature flows, and a heating temperature of the electric heating component is higher than the set temperature;- the heat exchange chamber is connected to the storage cavity, so that a heat exchange fluid in the storage cavity enters the heat exchange chamber for heat exchange with the liquid heat exchange component and / or the electric heating component, and the heat exchange fluid after the heat exchange enters the storage cavity.;

2. A charging and discharging device according to claim 1, characterized in that, the heat exchange fluid has a first temperature, the set temperature is higher than the first temperature but lower than the heating temperature of the electric heating component, wherein the liquid heat exchange component is configured to heat the heat exchange fluid and the electric heating component is configured to heat the heat exchange fluid heated by the liquid heat exchange component.

3. A recharging and discharging device according to claim 2, characterized in that the heat exchange fluid has a second temperature, and the set temperature is lower than the second temperature; the liquid heat exchange component is further configured to cool the heat exchange fluid.

4. A charging and discharging device according to claim 1, characterized in that the set temperature is lower than the temperature of the heat exchange fluid, wherein the liquid heat exchange component is configured to cool the heat exchange fluid, and the heating temperature of the electric heating component is higher than the temperature of the heat exchange fluid, wherein the electric heating component is configured to heat the heat exchange fluid.

5. A recharging and discharging device according to any one of claims 1 to 4, characterized in that, a first connection structure is provided between the heat exchange chamber and the storage cavity, the first connection structure is configured to allow the heat exchange fluid in the storage cavity to enter the heat exchange chamber; a second connection structure is provided between the heat exchange chamber and the storage cavity, the second connection structure is configured to allow the heat exchange fluid after the heat exchange to enter the storage cavity.

6. A recharging and discharging device according to claim 5, characterized in that, the heat exchange fluid is transported to the heat exchange chamber in a first direction, the first connection structure is located upstream of the liquid heat exchange component and the electric heating component in the first direction, and the second connection structure is located downstream of the liquid heat exchange component and the electric heating component in the first direction.

7. A charging and discharging device according to claim 6, characterized in that the liquid heat exchange component is arranged close to the first connection structure, and the electric heating component is arranged on a side of the liquid heat exchange component away from the first connection structure.

8. A charging and discharging device according to claim 5, characterized in that at least one of the first connection structure and the second connection structure comprises a transport component for providing energy to transport the heat exchange fluid.

9. A recharging and discharging device according to claim 8, characterized in that the recharging and discharging module comprises a module frame and a recharging and discharging component located inside the module frame, wherein the heat exchange fluid comprises a gas and the transport component comprises a fan.

10. A charging and discharging device according to any one of claims 1 to 4, characterized in that the temperature control mechanism further comprises a controller component for controlling the on / off state of the liquid heat exchange component and the electric heating component.