Charging / discharging device

Abstract

The utility model relates to the technical field of battery preheating, in particular to a charging and discharging device which comprises a shell, a battery module and a controller, the shell is provided with a cavity, and the shell comprises a heat conduction plate; the battery module is arranged in the cavity of the shell; the controller is arranged in the cavity of the shell, the controller is provided with the heating part, the heating part exchanges heat with the battery module through the heat conducting plate, the charging and discharging device can complete preheating of the battery module without additionally arranging a special heating device, and the structure is simple.

Description

Technical Field

[0001] This application relates to the technical field of battery preheating, and particularly to a charging and discharging device. Background Art

[0002] With the development of new energy, batteries are an indispensable part of the new energy field. Batteries have the characteristic of high temperature resistance, but starting at low temperatures is a difficult point to overcome. Taking lithium iron phosphate batteries as an example, they have difficulty discharging when the temperature is below zero degrees. To solve the above problems, the existing method is to preheat the battery pack through a heating device, and then perform subsequent charging and discharging operations after the battery pack is preheated to the working temperature. At present, although using a heating device to preheat the battery pack can solve the problem of low-temperature startup of the battery pack, a special heating device needs to be installed, and the structure is complex. Utility Model Content

[0003] The purpose of this application is to provide a charging and discharging device that can preheat the battery module without installing a special heating device, and has a simple structure.

[0004] To this end, an embodiment of this application provides a charging and discharging device, including: a housing having a cavity, the housing including a heat conducting plate; a battery module disposed in the cavity of the housing; and a controller disposed in the cavity of the housing, the controller having a heating part, and the heating part exchanges heat with the battery module through the heat conducting plate.

[0005] In a possible implementation, the heating part of the controller is attached to the heat conducting plate, and the battery module is attached to the heat conducting plate.

[0006] In a possible implementation, the area of the surface of the battery module facing the heat conducting plate is equal to its contact area with the heat conducting plate.

[0007] In a possible implementation, when the charging and discharging device is in the working state, the heating part of the controller is located below the battery module.

[0008] In a possible implementation, the controller is electrically connected to an external power source, and the controller can be started through the external power source.

[0009] In a possible implementation, the heat conducting plate includes a first heat conducting plate and a second heat conducting plate arranged oppositely, the battery module is located between the first heat conducting plate and the second heat conducting plate, the controller includes a first controller and a second controller, the heating part of the first controller exchanges heat with the battery module through the first heat conducting plate, and the heating part of the second controller exchanges heat with the battery module through the second heat conducting plate.

[0010] In a possible implementation, the first controller and the second controller are arranged at intervals, and the first controller and the second controller are connected by a fixing member.

[0011] In a possible implementation, the charging and discharging device further includes a heat conducting pad disposed between the heat generating part and the heat conducting plate.

[0012] In a possible implementation, a heat insulation layer is disposed on a side of the heat conducting plate away from the cavity.

[0013] In a possible implementation, the charging and discharging device is a photovoltaic energy storage machine.

[0014] According to the charging and discharging device provided by the embodiment of the present application, the heat generating part of the controller generates heat in the charging and discharging device, and the heat is transferred to the battery module through the heat conducting plate of the housing, and the battery module is preheated. It is not necessary to install a dedicated heating device to complete the preheating of the battery module, and the structure is simple. Description of the Drawings

[0015] The drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with the present invention and used together with the description to explain the principles of the present invention.

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] One or more embodiments are illustrated by way of example in the corresponding pictures in the drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0018] Figure 1 Schematic structural diagram of a charging and discharging device provided by an embodiment of the present application after removing the first diversion plate;

[0019] Figure 2 Schematic three-dimensional structural diagram of a charging and discharging device provided by an embodiment of the present application;

[0020] Figure 3 Schematic structural diagram of a charging and discharging device provided by an embodiment of the present application after removing the second diversion plate;

[0021] Figure 4 Show Figure 3 Partial enlarged structural diagram at position A;

[0022] Figure 5 Show Figure 3 Partial enlarged structural diagram at position B;

[0023] Figure 6 Schematic diagram showing the structure of a deflector and an avoidance groove provided by an embodiment of the present application;

[0024] Figure 7 Schematic diagram showing another structure of a deflector and an avoidance groove provided by an embodiment of the present application;

[0025] Figure 8 Schematic cross-sectional structure diagram of a first deflector and a second deflector provided by an embodiment of the present application;

[0026] Figure 9 Schematic cross-sectional structure diagram of another first deflector and second deflector provided by an embodiment of the present application.

[0027] Explanation of reference numerals:

[0028] 1. Housing; 11. First heat conducting plate; 12. Second heat conducting plate; 13. Avoidance groove;

[0029] 2. Battery module;

[0030] 3. Controller; 31. Heating part; 32. First controller; 33. Second controller;

[0031] 4. Fixing member;

[0032] 5. Thermal pad. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present application. To simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present application. In addition, the embodiments of the present application may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0035] For ease of description, spatial relative relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", "front", "rear", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation other than the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or change in motion state, then these directional indications will change accordingly. For example, an element described as "below" or "beneath" other elements or features will subsequently be oriented as "above" or "over" other elements or features. Therefore, the exemplary term "below" can include both the upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0036] To solve the problems in the prior art, the present application provides a charging and discharging device, which can complete the preheating of the battery module without installing a dedicated heating device, and has a simple structure.

[0037] Figure 1 The structural schematic diagram of a charging and discharging device provided by an embodiment of the present application after removing the first flow guiding plate is shown; Figure 2 The three-dimensional structural schematic diagram of a charging and discharging device provided by an embodiment of the present application is shown; Figure 3 The structural schematic diagram of a charging and discharging device provided by an embodiment of the present application after removing the second flow guiding plate is shown; Figure 4 Shown Figure 3 The partial enlarged structural schematic diagram of part A;

[0038] Figure 5 Shown Figure 3 The partial enlarged structural schematic diagram of part B; Figure 6 The structural schematic diagram of a flow guiding plate and an avoidance groove provided by an embodiment of the present application is shown; Figure 7 The structural schematic diagram of another flow guiding plate and an avoidance groove provided by an embodiment of the present application is shown; Figure 8 The cross-sectional structural schematic diagram of a first flow guiding plate and a second flow guiding plate provided by an embodiment of the present application is shown; Figure 9 The cross-sectional structural schematic diagram of another first flow guiding plate and a second flow guiding plate provided by an embodiment of the present application is shown.

[0039] As Figures 1-9 shown, an embodiment of the present application provides a charging and discharging device, including a housing 1, a battery module 2, and a controller 3.

[0040] The housing 1 has a cavity, and the housing 1 includes a heat-conducting plate. Among them, the heat-conducting plate is a side plate of the housing 1, made of a metal material, and has good heat-conducting performance. Specifically, the heat-conducting plate can be made of aluminum alloy material, which not only has high heat-conducting performance but also can reduce costs.

[0041] The battery module 2 is arranged in the cavity of the housing 1.

[0042] The controller 3 is arranged in the cavity of the housing 1. The controller 3 has a heat-generating part 31, and the heat-generating part 31 exchanges heat with the battery module 2 through the heat-conducting plate.

[0043] In this application, heat is generated by the heat-generating part 31 of the controller 3. The heat is transferred to the battery module 2 through the heat-conducting plate of the housing 1, and the battery module 2 is preheated. There is no need to install a special heating device to complete the preheating of the battery module, and the structure is simple.

[0044] In the related art, the battery module 2 has a problem of being difficult to start at low temperatures. The current method is to use a heating device to preheat the battery module 2, and start the battery module 2 after preheating the battery module 2 to the required temperature. However, it is necessary to install a heating device in the housing 1, and the power consumption of the heating device is relatively large. It is necessary to add an operation mode of the charge and discharge device, that is, set a preheating mode before starting, and start the heating device to preheat the battery module 2.

[0045] In the embodiment of this application, the controller 3 of the charge and discharge device itself is utilized. The controller 3 is a module with a large amount of heat generation. The heat-generating part 31 of the controller 3 exchanges heat with the heat-conducting plate, so that the heat generated by the heat-generating part 31 of the controller 3 can be transferred to the heat-conducting plate, and then directly transferred to the battery module 2 through the heat-conducting plate to realize the preheating of the battery module 2. After the battery module 2 is preheated to the required temperature, subsequent charge and discharge operations are carried out. The start of the controller 3 only needs to supply power to the chip of the controller 3, and the required voltage and current are small. For example, the chip generally only needs 3.3v and 5ma to be powered on to start. There is no need to install a special heating device, and only the layout of the controller 3 needs to be adjusted so that the heat of the heat-generating part 31 of the controller 3 preheats the battery module 2 through the heat-conducting plate of the housing 1. The structure is simple and the power consumption is small.

[0046] Moreover, the battery module 2 of the charge and discharge device has a large surface area. If a heating device is used to preheat the battery module 2, it is difficult to ensure that the surface of the battery module 2 is evenly heated. Over time, the service life of the battery module 2 will be affected. After preheating the battery module 2, it is impossible to ensure the constant temperature state of the battery module 2, and the temperature fluctuation of the battery module 2 is large, affecting the charging and discharging stability of the battery module 2. In the present application, the heating part 31 of the controller 3 transfers heat to the battery module 2 through the heat conducting plate, which can make the surface of the battery module 2 evenly heated, thereby extending the service life of the battery module 2. Moreover, during the operation of the battery module 2, the controller 3 is also in the working state, and can always heat the battery module 2, so that the temperature of the battery module 2 is kept stable, and further ensure the charging and discharging stability of the battery module 2.

[0047] In some embodiments, the heating part 31 of the controller 3 is attached to the heat conducting plate, and the battery module 2 is attached to the heat conducting plate.

[0048] In the present application, the heating part 31 is directly attached to the heat conducting plate, and the heat can be directly transferred to the heat conducting plate. The heat conducting plate is attached to the battery module 2, and the heat can be directly transferred to the battery module 2, which can ensure the heat transfer efficiency and the utilization rate of heat, reduce the loss of heat during the transfer process, and thus improve the utilization rate of heat.

[0049] In some embodiments, the area of the surface of the battery module 2 facing the heat conducting plate is equal to its contact area with the heat conducting plate.

[0050] In the present application, the side of the battery module 2 facing the heat conducting plate is fully attached to the heat conducting plate, which can not only ensure the heat exchange efficiency between the heat conducting plate and the battery module 2, but also the heat conducting plate can fully cover the battery module 2, so as to heat the entire surface of the battery module 2 facing the heat conducting plate, thus avoiding the situation of uneven heating at different positions of the battery module 2.

[0051] As Figures 6-7 shown, in another alternative embodiment, the heat conducting plate is provided with a relief groove 13 at the position where it is attached to the battery module 2. The relief groove 13 forms a gap between the heat conducting plate and the battery module 2, and the battery module 2 cannot be heated at the gap. The width of the relief groove 13 gradually becomes narrower along the direction from the controller 3 to the battery module 2, so that the actual contact area between the battery module 2 and the heat conducting plate gradually becomes smaller along the direction from the controller 3 to the battery module 2. Because there is heat loss during the transfer of heat of the heat conducting plate, by setting the relief groove 13, in the case where the surface area of the battery module 2 itself is large, it can ensure that the surface of the battery module 2 is evenly heated, so that the surface of the battery module 2 attached to the heat conducting plate can also be fully heated at a position farther from the controller 3.

[0052] Specifically, the avoidance grooves 13 are arranged to extend in the direction from the controller 3 towards the battery module 2. There are multiple avoidance grooves 13, and the multiple avoidance grooves 13 are arranged at intervals, thereby further ensuring the uniform heat reception at different positions of the battery module 2.

[0053] In some embodiments, when the charging and discharging device is in the working state, the heat generating part 31 of the controller 3 is located below the battery module 2.

[0054] In this application, the heat generating part 31 of the controller 3 is located below the battery module 2, and the heat is transferred upwards. More heat can be transferred to the battery module 2 through the heat conducting plate, thereby further improving the heat transfer effect and the utilization rate of heat.

[0055] As Figure 6 shown, specifically, the top of the avoidance groove 13 on the heat conducting plate can be set in a sealed form, that is, the part of the battery module 2 above the avoidance groove 13 is fully attached to the heat conducting plate, so as to ensure sufficient heating of the end of the heated surface of the battery module 2 far from the controller 3.

[0056] As Figure 7 shown, in another alternative embodiment, the top of the avoidance groove 13 can also be set in an open form. The heat can be transferred to the battery module 2 through the heat conducting plate. When the battery module 2 is working normally or the working environment temperature is relatively high, heat dissipation can be carried out through the avoidance groove 13. At this time, the avoidance groove 13 plays a role in heat dissipation, facilitating the dissipation of heat from the top opening of the avoidance groove 13.

[0057] In some embodiments, the controller 3 is electrically connected to an external power supply, and the controller 3 can be started through the external power supply.

[0058] In this application, the external power supply can be an auxiliary power supply. The controller 3 is powered by the auxiliary power supply, so that the controller 3 can be started normally. Since the starting voltage and current of the controller 3 are very small, only a low-power auxiliary power supply needs to be set.

[0059] Optionally, the external power supply can also be the electricity of photovoltaic or the power grid. The controller 3 is started by the electricity of photovoltaic or the power grid. After the controller 3 is started, heat is generated by the heat generating part 31 and transferred to the battery module 2 through the heat conducting plate, thereby realizing the preheating of the battery module 2.

[0060] As Figure 1As shown, in some embodiments, the heat conducting plate includes a first heat conducting plate 11 and a second heat conducting plate 12 which are oppositely arranged. The battery module 2 is located between the first heat conducting plate 11 and the second heat conducting plate 12. The controller 3 includes a first controller 32 and a second controller 33. The heat generating part 31 of the first controller 32 exchanges heat with the battery module 2 through the first heat conducting plate 11, and the heat generating part 31 of the second controller 33 exchanges heat with the battery module 2 through the second heat conducting plate 12.

[0061] In this application, the battery module 2 is arranged in the housing 1. The front and rear surfaces of the battery module 2 are respectively attached to the first heat conducting plate 11 and the second heat conducting plate 12. After the first controller 32 is started, the heat generating part 31 generates heat and transfers the heat to the front surface of the battery module 2 through the first heat conducting plate 11. After the second controller 33 is started, the heat generating part 31 generates heat and transfers the heat to the rear surface of the battery module 2 through the second heat conducting plate 12, so that the front and rear sides of the battery module 2 can be preheated synchronously, further improving the preheating effect and heating uniformity of the battery module 2.

[0062] Specifically, one of the first controller 32 and the second controller 33 is an inverter board, and the other is a converter. The heating part is the power device on the inverter board and the converter. When the inverter board and the converter work, the power device is the main heat generating part 31. By attaching the control power device to the heat conducting plate, the heat generated by the power device can be transferred to the heat conducting plate and then transferred to the battery module 2 by the heat conducting plate to complete the preheating of the battery module 2.

[0063] In a specific embodiment, the first heat conducting plate 11 and the second heat conducting plate 12 in this application are both flat plates. The first heat conducting plate 11 and the second heat conducting plate 12 are respectively attached to the front surface and the rear surface of the battery module 2 with a relatively large surface area, thereby ensuring the preheating effect on the battery module 2.

[0064] As Figure 8 As shown, in another alternative embodiment, the first heat conducting plate 11 and the second heat conducting plate 12 can also be "L"-shaped folded plates. The first heat conducting plate 11 is attached to the front surface and the right side surface of the battery module 2 to preheat the front surface and the right side surface of the battery module 2. The second heat conducting plate 12 is attached to the rear surface and the left side surface of the battery module 2 to preheat the rear surface and the left side surface of the battery module 2, so as to realize the preheating of the four sides of the battery module 2 and further improve the preheating effect on the battery module 2.

[0065] As Figure 9As shown, in another alternative embodiment, the first heat conducting plate 11 may also adopt a "U" - shaped structure, which can pre - heat two sides and the front surface of the battery module 2. The second heat conducting plate 12 pre - heats the rear surface of the battery module 2, and it can also pre - heat the periphery of the battery module 2. At this time, the heat generation amount of the heat generating part 31 of the first controller 32 needs to be greater than that of the heat generating part 31 of the second controller 33. Optionally, the second heat conducting plate 12 may also adopt a "U" - shaped structure to pre - heat the rear surface and two sides of the battery module 2, and the first heat conducting plate 11 pre - heats the front surface of the battery module 2. At this time, the heat generation amount of the heat generating part 31 of the second controller 33 needs to be greater than that of the heat generating part 31 of the first controller 32.

[0066] In another alternative embodiment, the controller 3 further includes a third controller, and the heat conducting plate further includes a third heat conducting plate. The two ends of the third heat conducting plate are respectively connected to the first heat conducting plate 11 and the second heat conducting plate 12. The third heat conducting plate is attached to the side surface of the battery module 2, and the heat generating part 31 of the third controller is attached to the third heat conducting plate. The heat generated by the heat generating part 31 of the third controller pre - heats the side surface of the battery module 2 through the third heat conducting plate. Among them, the third controller and the third heat conducting plate can be set in a group, or can be set in two opposite groups.

[0067] In some embodiments, the first controller 32 and the second controller 33 are arranged at intervals, and the first controller 32 and the second controller 33 are connected by a fixing member 4.

[0068] In this application, the first controller 32 and the second controller 33 are arranged at intervals along the thickness direction of the housing 1. The heat generating parts 31 of the first controller 32 and the second controller 33 are arranged back - to - back, and are respectively attached to the first heat conducting plate 11 and the second heat conducting plate 12. This can not only transfer the generated heat to the battery module 2 in time through the heat conducting plate, but also prevent the heat from converging inside the housing 1, resulting in a large temperature rise inside the housing 1 and affecting the use effect and service life of the controller 3. The first controller 32 and the second controller 33 are connected by a fixing member 4. The fixing member 4 is a fixing bolt, which can support the first controller 32 and the second controller 33, thus ensuring the fixing effect of the first controller 32 and the second controller 33, and further ensuring that the heat generating parts 31 of the first controller 32 and the second controller 33 can be fully attached to the heat conducting plate to ensure the heat transfer effect.

[0069] Optionally, a limiting structure can also be arranged inside the housing 1 to limit and fix the first controller 32 and the second controller 33 through the limiting structure, so that the heat generating parts 31 of the first controller 32 and the second controller 33 can be kept in a fitting state with the heat conducting plate. Specifically, the limiting structure can be a card slot, which is clamped with the first controller 32 and the second controller 33 through the card slot.

[0070] In some embodiments, the charge and discharge device further includes a heat conducting pad 5 disposed between the heat generating portion 31 and the heat conducting plate.

[0071] In this application, by disposing the heat conducting pad 5 between the heat generating portion 31 and the heat conducting plate, both sides of the heat conducting pad 5 are respectively attached to the heat generating portion 31 and the heat conducting plate, so that the heat of the heat generating portion 31 is transferred to the heat conducting plate with as little loss as possible, thereby improving the heat transfer efficiency and the preheating effect on the battery module 2.

[0072] Specifically, the heat conducting pad 5 can be a silica gel pad. The silica gel pad is mainly made of polysilicate-based materials and has excellent heat conductivity and good high temperature resistance. It can not only ensure the attachment effect between the heat generating portion 31 and the heat conducting plate, thereby improving the heat transfer effect, but also play a good protection role for the heat generating portion 31 of the controller 3, avoiding the rigid contact between the heat generating portion 31 of the controller 3 and the heat conducting plate of the housing 1 and resulting in extrusion damage, and extending the service life of the controller 3.

[0073] Optionally, the heat conducting pad 5 in this application can also be a heat conducting adhesive pad, which can also achieve the effects of heat conduction and protection of the controller 3.

[0074] In some embodiments, a heat insulation layer is provided on the side of the heat conducting plate away from the cavity.

[0075] In this application, by providing a heat insulation layer on the outside of the heat conducting plate, the heat on the heat conducting plate can be effectively prevented from dissipating outward, so that more heat of the heat conducting plate can be transferred to the battery module 2, reducing heat loss.

[0076] Specifically, the heat insulation layer can be in a detachable form. In cold weather, the heat insulation layer is attached to the outer surface of the heat conducting plate. In seasons when the battery module 2 does not need to be preheated, the heat insulation layer can be removed from the outer surface of the heat conducting plate.

[0077] In some embodiments, the charge and discharge device is a photovoltaic energy storage machine.

[0078] The charge and discharge device in this application is a photovoltaic energy storage machine, which is used to integrate photovoltaic power generation into the power grid or store it in a backup power supply. The battery module 2 is the backup power supply of the photovoltaic energy storage machine. Most of the photovoltaic energy storage machines are placed vertically or hung on the wall to reduce the occupied space. Moreover, the product volume is not large, and there are terminals at the lower end. The most suitable installation method is wall-mounted. In this application, the controller 3 in the photovoltaic energy storage machine is disposed below the battery module 2, and the heat is transferred through the housing 1, and the heat generated by the controller 3 is transferred to the battery module 2 to realize the preheating of the battery module 2.

[0079] During the low-temperature startup phase of the battery, the battery may not be able to be charged due to the low temperature, and the battery needs to be preheated. Similarly, the structural scheme of the present invention can be used to adjust the operation mode of the whole machine, such as adjusting the DC-AC or AC-DC mode, so that the inverter board or converter can work without passing through the battery, so that the power device generates heat, and the battery is preheated. After heating to a certain temperature, the battery is charged and discharged. Specifically, the startup of the controller 3 preferably adopts the photovoltaic power generation grid-connected mode, that is, the controller 3 is started by photovoltaic power generation, and the controller 3 works and generates heat to preheat the battery module 2, so that the battery module 2 reaches the operating temperature, and then the controller 3 selects the operation mode as needed, and the photovoltaic power generation is stored in the battery module 2 or connected to the power grid.

[0080] The present application provides a photovoltaic storage machine, which closely combines a battery module 2 with a controller 3 and effectively utilizes the heat generated during the operation of the controller 3 to solve the problems of charging and discharging difficulties, preheating, etc. caused by products such as photovoltaic storage machines during low-temperature operation, thereby achieving good results.

[0081] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0082] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0083] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A charging and discharging device, characterized in that: include: A housing (1) having a cavity, wherein the housing (1) comprises a heat conducting plate; A battery module (2) is arranged in the cavity of the housing (1); as well as A controller (3) is arranged in the cavity of the housing (1); the controller (3) has a heating portion (31); the heating portion (31) exchanges heat with the battery module (2) via the heat conducting plate.

2. The charge and discharge device according to claim 1, characterized in that: The heat generating portion (31) of the controller (3) is bonded to the heat conducting plate, and the battery module (2) is bonded to the heat conducting plate.

3. The charge and discharge device according to claim 2, characterized in that: The area of ​​the battery module (2) facing the heat conducting plate is equal to the area of ​​contact between the battery module (2) and the heat conducting plate.

4. The charge and discharge device according to claim 1, characterized in that: When the charging and discharging device is in an operating state, the heating portion (31) of the controller (3) is located below the battery module (2).

5. The charge and discharge device according to claim 1, characterized in that: The controller (3) is electrically connected to an external power supply, and the controller (3) can be started by the external power supply.

6. The charging and discharging device according to claim 1, characterized in that: The heat conducting plate comprises a first heat conducting plate (11) and a second heat conducting plate (12) which are arranged opposite to each other; the battery module (2) is located between the first heat conducting plate (11) and the second heat conducting plate (12); the controller (3) comprises a first controller (32) and a second controller (33); a heating part (31) of the first controller (32) exchanges heat with the battery module (2) through the first heat conducting plate (11); and a heating part (31) of the second controller (33) exchanges heat with the battery module (2) through the second heat conducting plate (12).

7. The charge and discharge device according to claim 6, characterized in that: The first controller (32) and the second controller (33) are arranged at a distance from each other, and the first controller (32) and the second controller (33) are connected via a fixing member (4).

8. The charge and discharge device according to claim 1, characterized in that: The charging and discharging device further comprises a heat conducting pad (5) arranged between the heating portion (31) and the heat conducting plate.

9. The charging and discharging device according to claim 1, characterized in that: A heat insulation layer is arranged on a side of the heat conducting plate away from the cavity.

10. The charge and discharge device according to claim 1, characterized in that: The charging and discharging device is a solar storage device.

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