Charging and discharging equipment

Abstract

The utility model discloses a charging and discharging device, and the all-in-one machine comprises a charging and discharging mechanism which comprises a storage location cavity and a charging and discharging module disposed in the storage location cavity; the temperature control mechanism comprises a heat exchange cavity, a liquid heat exchange part and an electric heating part, the liquid heat exchange part and the electric heating part are arranged in the heat exchange cavity, a channel allowing liquid with the set temperature to flow through is formed in the liquid heat exchange part, and the heating temperature of the electric heating part is higher than the set temperature; and the heat exchange cavity communicates with the storage location cavity, so that a heat exchange medium in the storage location cavity enters the heat exchange cavity to exchange heat with the liquid heat exchange piece and / or the electric heating piece, and the heat exchange medium subjected to heat exchange enters the storage location cavity. Two sets of pipelines for conveying water with different temperatures do not need to be configured, and the pipeline arrangement complexity and the pipeline arrangement and maintenance cost can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of chemical composition and capacity equipment, and in particular to a charging and discharging device. Background Art

[0002] Formation is an important step in the manufacturing process of lithium batteries. Its main function is to activate lithium batteries for the first time and form a solid electrolyte interface (SEI) film on the negative electrode surface of lithium batteries. Capacity separation is to charge and discharge the formed batteries, and to distinguish the battery capacity, charging constant current ratio, discharge platform voltage, and internal resistance so as to classify and group them. The constancy of the ambient temperature of the storage location where the charging and discharging equipment (i.e., the formation and capacity separation equipment) is located is conducive to improving the consistency of battery performance, and the more constant the temperature, the better the consistency of the battery.

[0003] In the related technology, the control of the storage environment temperature is usually achieved by water heat exchange. Specifically, the current charging and discharging equipment is equipped with low-temperature water pipelines and high-temperature water pipelines. When the storage environment temperature 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 storage environment temperature is higher than the temperature of the low-temperature water and lower than the target temperature and the temperature of the high-temperature water, the low-temperature water cannot meet the demand for heat exchange and heating. At this time, the high-temperature water can be used for heat exchange and heating.

[0004] However, since the current charging and discharging equipment is configured with two sets of pipelines for conveying water at different temperatures, the two sets of pipelines will not only increase the complexity of pipeline setting, but also increase the cost of pipeline setting and maintenance. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the related art, the present application provides a charging and discharging device to solve the problem in the related art that the complexity of pipeline setting is increased and the pipeline setting and maintenance costs are increased due to the configuration of two sets of pipelines for transporting water of different temperatures.

[0006] In order to solve the above technical problems, in a first aspect, the present application provides a charging and discharging device, which includes:

[0007] A charging and discharging mechanism, the charging and discharging mechanism comprising a storage cavity and a charging and discharging module arranged in the storage cavity;

[0008] A temperature control mechanism, the temperature control mechanism comprising a heat exchange cavity, a liquid heat exchange element and an electric heating element arranged in the heat exchange cavity, the liquid heat exchange element being provided with a channel for liquid of a set temperature to flow through, and the heating temperature of the electric heating element being greater than the set temperature;

[0009] The heat exchange cavity is communicated with the storage cavity, so that the heat exchange medium in the storage cavity enters the heat exchange cavity to exchange heat with the liquid heat exchange element and / or the electric heating element, and the heat exchange medium after the heat exchange enters the storage cavity.

[0010] In a possible implementation of the first aspect, the heat exchange medium has a first temperature, the set temperature is greater than the first temperature, and the set temperature is less than the heating temperature of the electric heating element, the liquid heat exchange element is used to heat the heat exchange medium, and the electric heating element is used to heat the heat exchange medium after the liquid heat exchange element is heated.

[0011] In a possible implementation manner of the first aspect, the heat exchange medium further has a second temperature, the set temperature is lower than the second temperature, and the liquid heat exchange element is further used to cool the heat exchange medium.

[0012] In a possible implementation of the first aspect, the set temperature is lower than the temperature of the heat exchange medium, and the liquid heat exchange element is used to cool the heat exchange medium; the heating temperature of the electric heater is higher than the temperature of the heat exchange medium, and the electric heater is used to heat the heat exchange medium.

[0013] In a possible implementation manner of the first aspect, the electric heating element is a positive temperature coefficient heat exchange element.

[0014] In a possible implementation of the first aspect, a first communication structure is provided between the heat exchange cavity and the storage cavity, and the first communication structure is used for allowing the heat exchange medium in the storage cavity to enter the heat exchange cavity;

[0015] A second connecting structure is further provided between the heat exchange cavity and the storage cavity, and the second connecting structure is used for the heat exchange medium after heat exchange to enter the storage cavity.

[0016] In a possible implementation of the first aspect, the heat exchange medium is transported in the heat exchange chamber along a first direction, the first connecting structure is located upstream of the liquid heat exchange element and the electric heating element in the first direction, and the second connecting structure is located downstream of the liquid heat exchange element and the electric heating element in the first direction.

[0017] In a possible implementation manner of the first aspect, the liquid heat exchange element is disposed close to the first connecting structure, and the electric heating element is disposed on a side of the liquid heat exchange element away from the first connecting structure.

[0018] In a possible implementation manner of the first aspect, at least one of the first connecting structure and the second connecting structure includes a conveying member, and the conveying member is used to provide power for conveying the heat exchange medium.

[0019] In a possible implementation manner of the first aspect, one of the first connecting structure and the second connecting structure includes a conveying member, and the other is a connecting hole.

[0020] In a possible implementation manner of the first aspect, the charging and discharging module includes a module frame and a charging and discharging component disposed in the module frame, the heat exchange medium is gas, and the conveying member is a fan.

[0021] In a possible implementation manner of the first aspect, the temperature control mechanism further includes a controller component, and the controller component is used to control the liquid heat exchange element and the electric heating element to be turned on or off.

[0022] Compared with the related art, this application has at least the following beneficial effects:

[0023] In the present application, since the heat exchange chamber and the storage chamber are connected, and since the liquid heat exchange element and the electric heating element are both arranged in the heat exchange chamber, when the heat exchange medium in the storage chamber enters the heat exchange chamber, the liquid heat exchange element and / or the electric heating element can exchange heat with the heat exchange medium to adjust the temperature of the heat exchange medium. After the heat exchange medium has exchanged heat with the liquid heat exchange element and / or the electric heating element, the heat exchange medium after the temperature change can also re-enter the storage chamber, so that the storage environment temperature in the storage chamber can be adjusted by the heat exchange medium after the temperature change, so that the storage environment temperature meets the process requirements of the charging and discharging module in the storage chamber.

[0024] Compared with the related art, since the channel in the liquid heat exchanger is used for liquid of set temperature to flow through, and since the heating temperature of the electric heating element is greater than the set temperature of the liquid flowing through the liquid heat exchanger, the present application can not only heat the heat exchange medium through the electric heating element when the set temperature of the liquid in the liquid heat exchanger cannot meet the heating requirements of the heat exchange medium, but also heat the heat exchange medium through the electric heating element, and then the temperature of the storage environment can be increased by the heated heat exchange medium, and since only the liquid of set temperature needs to be transported to the liquid heat exchanger, the present application only needs to configure a set of pipelines for transporting liquid of set temperature to the liquid heat exchanger, and there is no need to configure two sets of pipelines for transporting liquids of different temperatures, which is beneficial to reduce the complexity of pipeline setting, and also helps to reduce the cost of pipeline setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 One of the schematic diagrams of the charging and discharging device provided in the embodiment of the present application;

[0027] Figure 2 A second schematic diagram of a charging and discharging device provided in an embodiment of the present application;

[0028] Figure 3 The third schematic diagram of the charging and discharging device provided in the embodiment of the present application;

[0029] Figure 4 A fourth schematic diagram of a charging and discharging device provided in an embodiment of the present application;

[0030] Figure 5 A temperature control flow chart of the charging and discharging equipment provided in an embodiment of the present application.

[0031] Description of reference numerals:

[0032] 1-charge and discharge mechanism; 11-storage cavity; 12-charge and discharge module; 121-module frame; 122-charge and discharge assembly; 123-housing; 13-storage housing;

[0033] 2-temperature control mechanism; 21-heat exchange chamber; 22-liquid heat exchange element; 23-electric heating element; 24-heat exchange shell;

[0034] 3- first communication structure;

[0035] 4- second communication structure;

[0036] 5-Conveying parts. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0039] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0040] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be 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 this application can be understood according to specific circumstances.

[0041] In addition, the terms "first", "second", etc. are mainly 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 the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0042] As described in the background technology of the present application, in the related art, formation is an important link in the lithium battery manufacturing process, and its main function is to activate the lithium battery for the first time, and to generate a solid electrolyte interface (SEI) film on the negative electrode surface of the lithium battery. Capacity division is to charge and discharge the formed battery, and to distinguish the capacity, charging constant current ratio, discharge platform voltage, and internal resistance of the battery by statistics, so as to divide the group. The constancy of the ambient temperature of the storage location where the charging and discharging equipment (i.e., the capacity division equipment) is located is conducive to improving the consistency of battery performance, and the more constant the temperature, the better the consistency of the battery.

[0043] In the related technology, the control of the storage environment temperature is usually achieved by water heat exchange. Specifically, the current charging and discharging equipment is equipped with low-temperature water pipelines and high-temperature water pipelines. When the storage environment temperature 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 storage environment temperature is higher than the temperature of the low-temperature water and lower than the target temperature and the temperature of the high-temperature water, the low-temperature water cannot meet the demand for heat exchange and heating. At this time, the high-temperature water can be used for heat exchange and heating.

[0044] However, since the current charging and discharging equipment is configured with two sets of pipelines for conveying water at different temperatures, the two sets of pipelines will not only increase the complexity of pipeline setting, but also increase the cost of pipeline setting and maintenance.

[0045] In view of the above-mentioned problems, the present application provides a charging and discharging device to solve the problem in the related art that the complexity of pipeline setting is increased and the pipeline setting and maintenance costs are increased due to the configuration of two sets of pipelines for transporting water of different temperatures.

[0046] The technical solution of the present application will be further described below in conjunction with specific embodiments and drawings:

[0047] like Figure 1 As shown, the charging and discharging device includes a charging and discharging mechanism 1 and a temperature control mechanism 2, wherein the charging and discharging mechanism 1 includes a storage cavity 11 and a charging and discharging module 12 arranged in the storage cavity 11. The temperature control mechanism 2 includes a heat exchange cavity 21, a liquid heat exchange component 22 and an electric heating component 23 arranged in the heat exchange cavity 21, wherein the liquid heat exchange component 22 is provided with a channel for liquid of a set temperature to flow through, and the heating temperature of the electric heating component 23 is greater than the above-mentioned set temperature.

[0048] The heat exchange chamber 21 is connected to the storage chamber 11 so that the heat exchange medium in the storage chamber 11 enters the heat exchange chamber 21 to exchange heat with the liquid heat exchange element 22 and / or the electric heating element 23, and the heat exchange medium after the heat exchange enters the storage chamber 11.

[0049] In the present application, since the heat exchange chamber 21 is connected to the storage chamber 11, and since the liquid heat exchange element 22 and the electric heating element 23 are both arranged in the heat exchange chamber 21, when the heat exchange medium in the storage chamber 11 enters the heat exchange chamber 21, the liquid heat exchange element 22 and / or the electric heating element 23 can exchange heat with the heat exchange medium to adjust the temperature of the heat exchange medium. After the heat exchange medium has exchanged heat with the liquid heat exchange element 22 and / or the electric heating element 23, the heat exchange medium after the temperature change can also re-enter the storage chamber 11, so that the storage environment temperature in the storage chamber 11 can be adjusted by the heat exchange medium after the temperature change, so that the storage environment temperature meets the process requirements of the charging and discharging module 12 in the storage chamber 11.

[0050] Compared with the related art, the present application has a channel in the liquid heat exchanger 22 for liquid of set temperature to flow through, and the heating temperature of the electric heater 23 is greater than the set temperature of the liquid flowing through the liquid heat exchanger 22. Therefore, the present application can not only heat the heat exchange medium through the electric heater 23 when the set temperature of the liquid in the liquid heat exchanger 22 cannot meet the heating requirements of the heat exchange medium, but also heat the heat exchange medium, and then the heated heat exchange medium can achieve the increase in the ambient temperature of the storage location. Moreover, since only the liquid of set temperature needs to be transported to the liquid heat exchanger 22, the present application only needs to configure a set of pipelines for transporting the liquid of set temperature to the liquid heat exchanger 22, and there is no need to configure two sets of pipelines for transporting liquids of different temperatures, which is beneficial to reduce the complexity of pipeline setting and also helps to reduce the cost of pipeline setting.

[0051] In the preferred embodiment, the liquid heat exchanger 22 is a tube-fin heat exchanger. Since the tube-fin heat exchanger has high heat exchange efficiency, the liquid heat exchanger 22 is set as a tube-fin heat exchanger, which can enhance the heat exchange efficiency of the liquid heat exchanger 22, and further enhance the heat exchange effect between the liquid heat exchanger 22 and the heat exchange medium.

[0052] In other embodiments, the liquid heat exchanger 22 may also be a shell and tube heat exchanger. Since the shell and tube heat exchanger is low in cost and easy to clean, setting the liquid heat exchanger 22 as a shell and tube heat exchanger is beneficial to reducing costs and facilitating cleaning and maintenance of the liquid heat exchanger 22.

[0053] For the liquid flowing through the inner channel of the liquid heat exchange element 22, in the embodiment of the present application, the liquid can be water, a solution, or a waste liquid containing impurities, etc. The type of the liquid can be selected flexibly. Specifically, it can be selected according to actual conditions, and the embodiment of the present application will not be elaborated in detail.

[0054] Regarding the heating temperature of the electric heating element 23 , it should be noted that the heating temperature of the electric heating element 23 is the temperature after the electric heating element 23 converts electrical energy into thermal energy, rather than the original temperature of the electric heating element 23 itself.

[0055] For the liquid heat exchange element 22 and the electric heating element 23, in some embodiments, the heat exchange medium has a first temperature, the set temperature is greater than the first temperature, and the set temperature is less than the heating temperature of the electric heating element 23, the liquid heat exchange element 22 is used to heat the heat exchange medium, and the electric heating element 23 is used to heat the heat exchange medium after the liquid heat exchange element 22 is heated.

[0056] After the liquid heat exchange element 22 heats the heat exchange medium, the electric heating element 23 is used to further heat the heat exchange medium. This not only can the liquid heat exchange element 22 and the electric heating element 23 be used to increase the temperature of the heat exchange medium and make the temperature of the heat exchange medium reach the required temperature, but also can reduce the heating time of the electric heating element 23, that is, can reduce the working time of the electric heating element 23, which is beneficial to reduce the power consumption of the electric heating element 23 and reduce costs.

[0057] In a preferred embodiment, for the charging and discharging equipment, whether it is feeding (i.e., when the equipment is undergoing a chemical formation process) or not, the storage environment temperature in the storage cavity 11 must be guaranteed to be constant at 45±3°C, and the channel in the liquid heat exchanger 22 is for water at 40°C to flow through. When the charging and discharging equipment is first started, the storage environment temperature does not exceed 40°C and there is a large temperature difference between the storage environment temperature and 40°C. At this time, the temperature of the heat exchange medium is the first temperature, that is, the first temperature does not exceed 40°C. At this time, after the heat exchange medium enters the heat exchange cavity 21 from the storage cavity 11, only the liquid heat exchanger 22 is used to heat the heat exchange medium to increase the temperature of the heat exchange medium, which can save electric energy; when the storage environment temperature does not exceed 40°C and there is a small temperature difference between the storage environment temperature and 40°C, the temperature of the heat exchange medium is also the first temperature, and the electric heating element 23 is turned on at this time, and the electric heating element 23 is used to heat the heat exchange medium heated by the liquid heat exchanger 22.

[0058] When the ambient temperature of the storage location exceeds 40°C, the temperature of the heat exchange medium is not the first temperature, and the liquid heat exchange component 22 is disabled, and only the electric heating component 23 is used to heat the heat exchange medium; when the ambient temperature of the storage location rises to about 45°C, the electric heating component 23 is turned off, and at this time, 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 natural heat dissipation, the charging and discharging equipment is also surrounded by a heat preservation design, so as to reduce the surface temperature of the storage location, and then reduce the difference between the surface temperature of the charging and discharging mechanism and the workshop environment, which is conducive to reducing the natural heat dissipation of the charging and discharging machine and maintaining the ambient temperature of the storage location at about 45°C.

[0059] Furthermore, the heat exchange medium also has a second temperature, the set temperature is lower than the second temperature, and the liquid heat exchange element 22 is also used to cool the heat exchange medium.

[0060] In this way, on the basis of being able to heat the heat exchange medium by a combination of liquid heating and electric heating, the liquid heat exchange element 22 can also be used to cool the heat exchange medium when the temperature of the heat exchange medium is higher than the above-mentioned set temperature, so that the liquid heat exchange element 22 has the ability to cool down in a high temperature environment. At the same time, the liquid in the liquid heat exchange element 22 after being heated by the heat exchange medium can also be used for other heating purposes, thereby reducing boiler energy consumption and effectively utilizing the heat load of the storage space, which is beneficial to reducing workshop operating costs and achieving the goal of energy saving and consumption reduction.

[0061] In a preferred embodiment, when the ambient temperature of the storage location exceeds 45°C and has a large temperature difference with 45°C, the temperature of the heat exchange medium is the second temperature, that is, the second temperature exceeds 45°C, and the liquid heat exchange element 22 through which 40°C water flows has a cooling capacity, and the liquid heat exchange element 22 is turned on, and the heat exchange medium is cooled by the liquid heat exchange element 22 to lower the ambient temperature of the storage location. At the same time, the heat generated in the storage cavity 11 can heat the water in the liquid heat exchange element 22 to replenish the hot water boiler.

[0062] For the liquid heat exchange element 22 and the electric heating element 23, in other embodiments, the above-mentioned set temperature is lower than the temperature of the heat exchange medium, and the liquid heat exchange element 22 is used to cool the heat exchange medium; the heating temperature of the electric heating element 23 is higher than the temperature of the heat exchange medium, and the electric heating element 23 is used to heat the heat exchange medium.

[0063] In this way, water cooling and electric heating are used to cool down and heat up the storage environment temperature respectively, which can simplify the operation of heating up and cooling down the storage environment temperature, and thus facilitate the control of the storage environment temperature.

[0064] In a preferred embodiment, the ambient temperature of the storage cavity 11 must be kept constant at about 25°C, and the temperature of the water flowing through the liquid heat exchanger 22 is lower than 25°C. When the ambient temperature of the storage is lower than 25°C, since the liquid heat exchanger 22 cannot be used to raise the ambient temperature of the storage to 25°C, the electric heating element 23 can be used for heating to raise the ambient temperature of the storage to 25°C, which facilitates the raising of the ambient temperature of the storage. When the ambient temperature of the storage is higher than 25°C, the liquid heat exchanger 22 through which water with a temperature lower than 25°C flows can be used for cooling to lower the ambient temperature of the storage to 25°C, which facilitates the lowering of the ambient temperature of the storage.

[0065] Regarding the electric heating element 23, further, in a preferred embodiment, the electric heating element 23 is a positive temperature coefficient (Positive Temperature Coefficient, PTC for short) heat exchange element.

[0066] With such a setting, the storage environment temperature can be controlled by utilizing the combination of liquid temperature control + PTC temperature control, and since the PTC heat exchanger is an automatic constant temperature heat exchange device, it is beneficial to improve the control accuracy of the storage environment temperature. At the same time, since the PTC heat exchanger has low power consumption and long life, it can also reduce the power consumption of the electric heating element 23, extend the service life of the electric heating element 23, and thus reduce costs.

[0067] In other embodiments, the electric heating element 23 may also be an electromagnetic heating element. Setting the electric heating element 23 as an electromagnetic heating element facilitates the electric heating element 23 to heat the heat exchange medium.

[0068] like Figure 1 As shown, a first connecting structure 3 is arranged between the heat exchange chamber 21 and the storage chamber 11, and the first connecting structure 3 is used for allowing the heat exchange medium in the storage chamber 11 to enter the heat exchange chamber 21; a second connecting structure 4 is also arranged between the heat exchange chamber 21 and the storage chamber 11, and the second connecting structure 4 is used for allowing the heat exchange medium after heat exchange to enter the storage chamber 11.

[0069] Such a setting optimizes the connection setting between the heat exchange chamber 21 and the storage chamber 11. Through the first connecting structure 3 and the second connecting structure 4, the heat exchange medium can enter the heat exchange chamber 21 and the storage chamber 11 respectively from different connecting structures, thereby avoiding interference between the heat exchange medium when entering the heat exchange chamber 21 and the storage chamber 11, thereby ensuring the temperature of the heat exchange medium after heat exchange.

[0070] In other embodiments, one, three or more connecting structures may be provided between the heat exchange chamber 21 and the storage chamber 11. The number of connecting structures may be flexibly set. Specifically, it may be set according to actual usage requirements. The embodiments of the present application will not elaborate on this in detail.

[0071] For the position relationship, further, Figure 1 As shown, the heat exchange medium flows in the heat exchange chamber 21 along the first direction ( Figure 1 The first connecting 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 connecting structure 4 is located downstream of the liquid heat exchange component 22 and the electric heating component 23 in the first direction.

[0072] Such a setting optimizes the positional relationship between the first connecting structure 3 and the second connecting structure 4 and the liquid heat exchange element 22 and the electric heating element 23, so that the heat exchange medium can complete the heat exchange with the liquid heat exchange element 22 and the electric heating element 23 in the process of flowing from the first connecting structure 3 to the second connecting structure 4. To a certain extent, the flow time of the heat exchange medium in the heat exchange chamber 21 can be shortened, which is beneficial to improving efficiency.

[0073] Furthermore, if Figure 1 As shown, the liquid heat exchange element 22 is arranged close to the first connecting structure 3 , and the electric heating element 23 is arranged on a side of the liquid heat exchange element 22 away from the first connecting structure 3 .

[0074] The liquid heat exchange element 22 is arranged close to the first connecting structure 3, so that the heat exchange medium can directly exchange heat with the liquid heat exchange element 22 after entering the heat exchange cavity 21 through the first connecting structure 3, which is conducive to improving the efficiency of heating or cooling the heat exchange medium. The electric heating element 23 is arranged on the side of the liquid heat exchange element 22 away from the first connecting structure 3, which optimizes the positional relationship between the electric heating element 23 and the liquid heat exchange element 22, and facilitates the electric heating element 23 to heat the heat exchange medium after the liquid heat exchange element 22 is heated.

[0075] For the first communicating structure 3 and the second communicating structure 4, further, at least one of the first communicating structure 3 and the second communicating structure 4 includes a conveying member 5, and the conveying member 5 is used to provide power for conveying the heat exchange medium.

[0076] Providing power for conveying the heat exchange medium through the conveying member 5 is not only conducive to facilitating the heat exchange medium to enter the heat exchange chamber 21 or the storage chamber 11 through the connecting structure where the conveying member 5 is located, but also conducive to increasing the flow rate of the heat exchange medium, thereby helping to enhance the heat exchange effect between the heat exchange medium and the charging and discharging module 12.

[0077] Furthermore, one of the first connecting structure 3 and the second connecting structure 4 includes a conveying member 5 , and the other is a connecting hole.

[0078] With such an arrangement, the conveying member 5 can not only provide power for the heat exchange medium to enter the heat exchange chamber 21 from the storage chamber 11, but also provide power for the heat exchange medium to enter the storage chamber 11 from the heat exchange chamber 21. At the same time, such an arrangement can also reduce the number of conveying members 5, which is beneficial to reducing costs.

[0079] In a preferred embodiment, Figure 1 As shown, the first connecting structure 3 is a connecting hole, and the second connecting structure 4 includes a conveying member 5. Such a configuration is beneficial to increasing the rate at which the heat exchange medium enters the storage cavity 11 from the heat exchange cavity 21 through the conveying member 5, which is beneficial to reducing the heat loss of the heat exchange medium after heat exchange, and further beneficial to ensuring the regulating effect of the heat exchange medium on the storage environment temperature.

[0080] In another embodiment, if Figure 2 As shown, the first connecting structure 3 includes a conveying member 5, and the second connecting structure 4 is a connecting hole. Such a configuration can increase the speed at which the heat exchange medium enters the heat exchange cavity 21 from the storage cavity 11, thereby facilitating the heat exchange effect between the heat exchange medium and the liquid heat exchange element 22 and the electric heating element 23.

[0081] In other embodiments, the first communication structure 3 and the second communication structure 4 may both be communication holes, or the first communication structure 3 and the second communication structure 4 may both include a conveying member 5. The structural arrangement of the first communication structure 3 and the second communication structure 4 is relatively flexible, and may be determined according to actual usage, and will not be elaborated in detail in the embodiments of the present application.

[0082] Regarding the charge and discharge module 12, further, in a preferred embodiment, the charge and discharge module 12 includes a module frame 121, a charge and discharge assembly 122 disposed in the module frame 121, the heat exchange medium is gas, and the conveying member 5 is a fan.

[0083] Such a configuration enables the gas as the heat exchange medium to directly contact the charge and discharge assembly through the module frame 121 for heat exchange, which is beneficial to enhance the heat exchange effect between the charge and discharge module 12 and the heat exchange medium. In addition, the fan facilitates the delivery of the gas as the heat exchange medium.

[0084] In another embodiment, if Figure 3As shown, the charge-discharge module 12 includes a closed housing 123, and the charge-discharge assembly 122 is arranged in the housing 123. In this case, the heat exchange medium can be a liquid, and the conveying member 5 is a conveying pump. In this arrangement, the heat exchange between the liquid and the charge-discharge module 12 is performed, which is conducive to enhancing the heat exchange effect between the charge-discharge module 12 and the heat exchange medium. At the same time, the conveying pump facilitates the delivery of the liquid as the heat exchange medium.

[0085] In a preferred embodiment, the temperature control mechanism 2 further includes a controller component (not shown in the figure), and the controller component is used to control the liquid heat exchange element 22 and the electric heating element 23 to be turned on or off.

[0086] The liquid heat exchange component 22 and the electric heating component 23 are controlled to be turned on or off by the controller component, which facilitates the switching of the liquid heat exchange component 22 and the electric heating component 23 between the on state and the off state, and further facilitates the control of the heat exchange between the liquid heat exchange component 22 and the electric heating component 23 and the heat exchange medium.

[0087] It should be noted that the controller component may include only one controller, that is, the liquid heat exchange component 22 and the electric heating component 23 are controlled to be turned on or off by one controller; of course, the controller component may also include two controllers, that is, the liquid heat exchange component 22 and the electric heating component 23 are controlled to be turned on or off by two controllers respectively.

[0088] like Figure 1 As shown, in a preferred embodiment, the charging and discharging mechanism 1 includes a storage housing 13, which is used to enclose a storage cavity 11; the temperature control mechanism 2 includes a heat exchange housing 24, which is used to enclose a heat exchange cavity 21 together with the storage housing 13.

[0089] The storage shell 13 and the heat exchange shell 24 facilitate the enclosure of the storage cavity 11 and the heat exchange cavity 21. At the same time, the heat exchange shell 24 and the storage shell 13 together enclose the heat exchange cavity 21, which can reduce the size of the shell to a certain extent, reduce the material used in the shell, and thus help reduce costs.

[0090] In another embodiment, if Figure 4 As shown, 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 cavity 21. The storage housing 13 and the heat exchange housing 24 are used separately to enclose the corresponding storage cavity 11 and the heat exchange cavity 21, which can reduce the influence of other housings on the airtightness of the storage cavity 11 and the heat exchange cavity 21 to a certain extent, and is conducive to ensuring the airtightness of the storage cavity 11 and the heat exchange cavity 21.

[0091] A temperature control method of the charging and discharging device in the embodiment of the present application is as follows:

[0092] like Figure 5As shown, when the charging and discharging equipment is started for the first time, the ambient temperature of the storage location does not exceed 35°C. At this time, only the liquid heat exchange component 22 is turned on to heat the heat exchange medium; after the liquid heat exchange component 22 is heated for a certain period of time, when the ambient temperature of the storage location is greater than 35°C and does not exceed 40°C, the electric heating component 23 is turned on again, and the heat exchange medium 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 medium heated by the liquid heat exchange component 22.

[0093] like Figure 5 As shown, after the electric heating element 23 and the liquid heat exchange element 22 are heated together for a certain period of time, when the ambient temperature of the storage location is greater than 40°C and does not exceed 45°C, the liquid heat exchange element 22 through which 40°C water flows does not have a heating effect on the heat exchange medium, and the liquid heat exchange element 22 is turned off, and only the electric heating element 23 is used to heat the heat exchange medium. After the electric heating element 23 is heated for a certain period of time, when the ambient temperature of the storage location is greater than 45°C and does not exceed 46°C, since the ambient temperature of the storage location at this time is within the temperature range required by the process of the charge and discharge module 12, no further heating is required, so the electric heating element 23 is turned off again.

[0094] During the formation process, a large current is used to charge the lithium battery. The lithium battery, power cables, probes, etc. in the warehouse generate heat, and the ambient temperature of the warehouse will gradually increase. Figure 5 As shown, when the ambient temperature of the storage location rises to greater than 46°C, the liquid heat exchange element 22 through which 40°C water flows has the cooling capacity. The liquid heat exchange element 22 is turned on to cool the heat exchange medium to lower the ambient temperature of the storage location so that the ambient temperature of the storage location is maintained at 45±2°C.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A charging and discharging device, characterized in that: include: A charging and discharging mechanism, the charging and discharging mechanism comprising a storage cavity and a charging and discharging module arranged in the storage cavity; A temperature control mechanism, the temperature control mechanism comprising a heat exchange cavity, a liquid heat exchange element and an electric heating element arranged in the heat exchange cavity, the liquid heat exchange element being provided with a channel for liquid of a set temperature to flow through, and the heating temperature of the electric heating element being greater than the set temperature; The heat exchange cavity is communicated with the storage cavity, so that the heat exchange medium in the storage cavity enters the heat exchange cavity to exchange heat with the liquid heat exchange element and / or the electric heating element, and the heat exchange medium after the heat exchange enters the storage cavity.

2. The charging and discharging device according to claim 1, characterized in that: The heat exchange medium has a first temperature, the set temperature is greater than the first temperature, and the set temperature is less than the heating temperature of the electric heater, the liquid heat exchange element is used to heat the heat exchange medium, and the electric heater is used to heat the heat exchange medium after being heated by the liquid heat exchange element.

3. The charging and discharging device according to claim 2, characterized in that: The heat exchange medium also has a second temperature, the set temperature is lower than the second temperature, and the liquid heat exchange element is further used to cool the heat exchange medium.

4. The charging and discharging device according to claim 1, characterized in that: The set temperature is lower than the temperature of the heat exchange medium, and the liquid heat exchange element is used to cool the heat exchange medium; the heating temperature of the electric heating element is higher than the temperature of the heat exchange medium, and the electric heating element is used to heat the heat exchange medium.

5. The charging and discharging device according to any one of claims 1 to 4, characterized in that: The electric heating element is a positive temperature coefficient heat exchange element.

6. The charging and discharging device according to any one of claims 1 to 4, characterized in that: A first connecting structure is provided between the heat exchange cavity and the storage cavity, and the first connecting structure is used for allowing the heat exchange medium in the storage cavity to enter the heat exchange cavity; A second connecting structure is further provided between the heat exchange cavity and the storage cavity, and the second connecting structure is used for the heat exchange medium after heat exchange to enter the storage cavity.

7. The charging and discharging device according to claim 6, characterized in that: The heat exchange medium is transported in the heat exchange cavity along a first direction, the first connecting structure is located upstream of the liquid heat exchange element and the electric heating element in the first direction, and the second connecting structure is located downstream of the liquid heat exchange element and the electric heating element in the first direction.

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

9. The charging and discharging device according to claim 6, characterized in that: At least one of the first communicating structure and the second communicating structure includes a conveying member, and the conveying member is used to provide power for conveying the heat exchange medium.

10. The charging and discharging device according to claim 9, characterized in that: One of the first communicating structure and the second communicating structure includes a conveying member, and the other is a communicating hole.

11. The charging and discharging device according to claim 9, characterized in that: The charging and discharging module comprises a module frame and a charging and discharging component arranged in the module frame. The heat exchange medium is gas, and the conveying member is a fan.

12. The 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, and the controller component is used to control the liquid heat exchange component and the electric heating component to be turned on or off.

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