Generator heating device and power generation system

Abstract

The application provides a generator heating device and a power generation system, and relates to the technical field of generators. The device provided by the application comprises a heat absorption plate, a liquid layer, a liquid storage tank, a heat exchange pipe, a first pump, a second pump and a liquid pipe for winding a generator. The liquid layer covers the back surface of the heat absorption plate. A liquid inlet on one side of the liquid layer is in communication with a liquid outlet pipe extending into the liquid storage tank. The first pump is arranged on the liquid outlet pipe of the liquid storage tank. A liquid outlet on the other side of the liquid layer is in communication with a liquid inlet pipe extending into the liquid storage tank. The heat exchange pipe is arranged in the liquid storage tank. The liquid pipe and the heat exchange pipe form a circulation loop. The second pump is arranged on the liquid pipe. The device provided by the application can use solar energy to keep the temperature of the generator reaching the starting power generation temperature, and the cost is low.

Description

Technical Field

[0001] This application relates to the field of generator technology, and in particular to a generator heating device and a power generation system. Background Technology

[0002] In daily life, generators serve as backup power when a load loses mains power. In some scenarios, the generator needs to maintain a temperature greater than or equal to its startup temperature. Under these conditions, the generator can start generating electricity to supply power to the load upon receiving a startup signal. However, in cold weather, the generator's temperature is too low to reach its startup temperature. Therefore, it is necessary to heat the generator to bring it up to its startup temperature.

[0003] Currently, the starting temperature of generators is usually maintained by electric auxiliary heating, which consumes a lot of electricity and is costly. Summary of the Invention

[0004] This application provides a generator heating device and a power generation system to solve the problems of high energy consumption and high cost in maintaining the generator's start-up and power generation temperature.

[0005] In a first aspect, this application provides a generator heating device. The device provided by this application includes a heat-absorbing plate, a liquid layer, a liquid storage tank, a heat exchange tube, a first pump, a second pump, and a liquid pipe for winding a generator. The liquid layer covers the back of the heat-absorbing plate. An inlet on one side of the liquid layer is connected to an outlet pipe extending into the liquid storage tank. The first pump is located in the outlet pipe of the liquid storage tank, and an outlet on the other side of the liquid layer is connected to an inlet pipe extending into the liquid storage tank. The heat exchange tube is located inside the liquid storage tank, and the liquid pipe and the heat exchange tube form a circulation loop. The second pump is located in the liquid pipe.

[0006] The generator heating device provided in this application is used such that the liquid pipe and the liquid storage tank are filled with liquid. A first pump is installed at the outlet pipe of the liquid storage tank, and the inlet on one side of the liquid layer is connected to the outlet pipe extending into the liquid storage tank. When the first pump is turned on, the liquid in the liquid storage tank is drawn into the liquid layer.

[0007] In addition, when the heat absorber is exposed to sunlight, it absorbs solar energy and raises its temperature. Since a liquid layer covers the surface of the heat absorber, the heat from the heat absorber is transferred to the liquid in the liquid layer, heating it. Furthermore, because the outlet on the other side of the liquid layer is connected to the inlet pipe extending into the storage tank, the heated liquid in the liquid layer flows into the storage tank, creating a cycle that heats the liquid inside the storage tank.

[0008] Furthermore, when the second pump is turned on, the liquid in the liquid pipe circulates. Since the heat exchange tube is located inside the storage tank, it absorbs heat from the liquid in the tank, and the liquid pipe and heat exchange tube form a circulation loop, thus heating the liquid in the liquid pipe. Because the liquid pipe is used to wind around the generator, it transfers the heat from the heated liquid to the generator, heating it as well. In this way, the generator can maintain its starting temperature for power generation. Therefore, the above process utilizes solar energy to maintain the generator at its starting temperature, resulting in low cost.

[0009] In one possible implementation, the heat-absorbing plate is a photovoltaic panel, and the generator heating device also includes a storage battery and a charging circuit, with the photovoltaic panel, charging circuit, and storage battery connected in sequence.

[0010] Photovoltaic panels convert solar energy into electrical energy, which is then transmitted to a battery for storage via a charging circuit. Because the liquid layer continuously absorbs heat from the photovoltaic panel, it lowers the panel's temperature, thus maintaining high photoelectric efficiency. This, in turn, allows the battery to store more electrical energy.

[0011] In one possible implementation, the device provided in this application further includes a controller, a temperature sensor, a first switch, and a heater disposed on the generator. The controller is electrically connected to the photovoltaic panel, the first switch, and the temperature sensor respectively. The battery, the first switch, and the heater are electrically connected in sequence. The photovoltaic panel is used to convert solar energy into electrical energy to power the controller. The temperature sensor is used to collect the temperature of the generator. The controller is used to control the first switch to close when the temperature of the generator is lower than the temperature threshold. The battery is used to power the heater after the first switch is closed.

[0012] Understandably, if the liquid in the reservoir is insufficient to heat the generator to a temperature threshold greater than or equal to the generator's start-up temperature, the battery can be used to power the heater. In this way, the heater releases heat, which is transferred to the generator, further enabling the generator to maintain its start-up temperature with high reliability.

[0013] In one possible implementation, the generator heating device further includes a voltage converter, a first switch is a single-pole double-throw switch, the heater is electrically connected to the fixed end of the single-pole double-throw switch, the controller is also electrically connected to the battery, and the controller is also used to control the free end of the single-pole double-throw switch to be electrically connected to the voltage converter when the battery charge is lower than the charge threshold.

[0014] When the free end of the single-pole double-throw switch is switched to electrical connection with the voltage converter, the voltage converter can provide mains power to the heater, allowing the heater to continue releasing heat to the generator. This further allows the heater's heat to be transferred to the generator when the battery is low, enabling the generator to maintain its starting temperature and ensuring high reliability.

[0015] In one possible implementation, the generator heating device further includes a second switch, and the controller is electrically connected in sequence with the second switch and the first pump. The controller is used to periodically control the closing of the second switch.

[0016] The controller periodically controls the first pump to draw liquid from the storage tank into the liquid layer, which can save power consumption.

[0017] In one possible implementation, the generator heating device includes N heat-absorbing plates and N liquid layers, each liquid layer being located on the back of a heat-absorbing plate, and the inlets and outlets of the N liquid layers being connected in parallel, where N is an integer greater than or equal to 2.

[0018] In this way, N heat-absorbing panels can convert more solar energy into electrical energy and store it in the battery 120, so that solar energy can be utilized more fully.

[0019] In one possible implementation, the top of the reservoir has vent holes.

[0020] When the volume of liquid in the reservoir increases, the liquid can force the air in the reserved space to be expelled through the vent. This prevents the reservoir from being deformed due to the increase in liquid volume.

[0021] Secondly, embodiments of this application also provide a power generation system, including a generator and a generator heating device provided in the first aspect of this application, wherein the liquid pipe of the generator heating device is used to wind the generator.

[0022] It should be understood that the second aspect of this application corresponds to the technical solution of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here.

[0023] In one alternative implementation, the power generation system includes a housing, within which a generator is located.

[0024] When the generator is located inside the casing, the generator can be protected by the casing.

[0025] In one alternative embodiment, the liquid storage tank of the generator heating device is integrally formed with the housing or is detachably connected.

[0026] This makes the power generation system easier to transport and install, and it also occupies less space. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] Figure 1 This is a schematic diagram of the power generation system provided in an embodiment of this application;

[0029] Figure 2 One of the circuit connection block diagrams of the generator heating device provided in the embodiments of this application;

[0030] Figure 3 A second circuit connection block diagram of the generator heating device provided in the embodiments of this application;

[0031] Figure 4 A second circuit connection block diagram of the generator heating device provided in the embodiments of this application;

[0032] Figure 5 This is a schematic diagram of the power generation system provided in the embodiments of this application from a first-view perspective;

[0033] Figure 6 This is a schematic diagram of the power generation system provided in an embodiment of this application from a second perspective.

[0034] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this application, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly placed when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0042] like Figure 1As shown, this application provides a generator heating device, including a heat-absorbing plate, a liquid layer 118, a liquid storage tank 104, a heat exchange tube 105, a first pump 107, a second pump 108, and a liquid pipe 124 for winding around a generator 101. The heat-absorbing plate can absorb heat from sunlight, the liquid layer 118 can be a hollow jacket for liquid flow, and the liquid storage tank 104 stores the liquid. The heat exchange tube 105 is one of the components of the heat exchanger, used for heat exchange between two media, and has high thermal conductivity and good isothermal properties. The first pump 107 and the second pump 108 can be used to transport the liquid. It should be noted that, in order for the heat exchange tube 105 to more fully absorb the heat from the liquid in the liquid storage tank 104, the heat exchange tube 105 can be spiral-shaped.

[0043] The inlet 112 located on one side of the liquid layer 118 is connected to the outlet pipe 110 extending into the liquid storage tank 104, and the first pump 107 is installed in the outlet pipe 110 of the liquid storage tank 104. In this way, when the first pump 107 is started, the first pump 107 can draw liquid from the liquid storage tank 104 and enter the liquid layer 118 through the outlet pipe 110 and the inlet 112 on one side of the liquid layer 118.

[0044] The liquid layer 118 covers the back of the heat absorber plate, so that the liquid flowing into the liquid layer 118 can effectively absorb the heat of the heat absorber plate.

[0045] The outlet 113 on the other side of the liquid layer 118 is connected to the inlet pipe 109 extending into the storage tank 104. After absorbing heat from the heat absorber, the liquid flowing into the liquid layer 118 flows out from the outlet 113 on the other side of the liquid layer 118. Since the outlet 113 on the other side of the liquid layer 118 is connected to the inlet pipe 109 extending into the storage tank 104, the liquid flowing out of the liquid layer 118 flows back into the storage tank 104. This cycle continues, and the temperature of the liquid in the storage tank 104 continuously increases.

[0046] Understandably, based on the principle of thermal expansion and contraction, as the temperature of the liquid inside the storage tank 104 continuously rises, the volume of the liquid inside the storage tank 104 also continuously increases. Therefore, the storage tank 104 can reserve a certain amount of space, and an air vent 106 can be provided at the top of the storage tank 104. When the volume of the liquid inside the storage tank 104 increases, the liquid can compress the air in the reserved space and expel it through the air vent 106. In this way, the storage tank 104 will not be deformed due to the increase in the volume of the liquid.

[0047] The heat exchange tube 105 is located inside the liquid storage tank 104. As the temperature of the liquid in the liquid storage tank 104 increases, the temperature of the liquid in the heat exchange tube 105 also increases. The liquid pipe 124 and the heat exchange tube 105 form a circulation loop, and the second pump 108 is installed in the liquid pipe 124. After the second pump 108 is started, it can circulate the liquid in the circulation loop formed by the liquid pipe 124 and the heat exchange tube 105 to fully absorb the heat of the liquid in the liquid storage tank 104.

[0048] When the liquid pipe 124 is wound around the generator 101, the heat of the liquid inside the pipe 124 can be transferred to the generator 101 when it is not in operation, thus heating the generator 101. This allows the generator 101 to maintain the temperature required for starting and generating electricity. Furthermore, the liquid pipe 124 can be wound around the generator 101 in a mesh-like manner, thereby increasing the contact area between the liquid pipe 124 and the generator 101. This allows for more efficient transfer of heat from the liquid inside the pipe 124 to the generator 101.

[0049] In summary, the generator heating device provided in this application can be placed outdoors in a location where it can receive ample sunlight, so as to convert solar energy into heat energy to heat the generator. Specifically, the liquid pipe 124 and the liquid storage tank 104 of the generator heating device are filled with liquid. Since the first pump 107 is located at the outlet pipe 110 of the liquid storage tank 104, and the inlet 112 on one side of the liquid layer 118 is connected to the outlet pipe 110 extending into the liquid storage tank 104, when the first pump 107 is turned on, the liquid in the liquid storage tank 104 is drawn into the liquid layer 118.

[0050] In addition, when the heat absorber is exposed to sunlight, it absorbs solar energy and raises its temperature. Since the liquid layer 118 covers the surface of the heat absorber, the heat from the heat absorber is transferred to the liquid in the liquid layer 118, thus heating the liquid within the liquid layer 118. Furthermore, because the outlet 113 on the other side of the liquid layer 118 is connected to the inlet pipe 109 extending into the storage tank 104, the heated liquid in the liquid layer 118 flows into the storage tank 104, and this cycle continues, thus heating the liquid within the storage tank 104.

[0051] Furthermore, when the second pump 108 is turned on, the liquid in the liquid pipe 124 circulates. Since the heat exchange pipe 105 is located inside the liquid storage tank 104, it absorbs heat from the liquid in the tank, and the liquid pipe 124 and the heat exchange pipe 105 form a circulation loop, thus heating the liquid in the liquid pipe 124. Because the liquid pipe 124 is used to wind the generator 101, it transfers the heat from the heated liquid to the generator 101, heating it as well. In this way, the generator 101, even when not in operation, can maintain its starting temperature for power generation. Therefore, the above process utilizes solar energy to maintain the generator 101 at its starting temperature, resulting in low cost.

[0052] In one possible implementation, the heat-absorbing plate can be a photovoltaic panel 117, such as... Figure 2 As shown, the generator heating device also includes a battery 120, a charging circuit 119, a photovoltaic panel 117, and the charging circuit 119, all of which are electrically connected in sequence. The photovoltaic panel 117 converts solar energy into electrical energy, which is then transmitted to the battery 120 for storage via the charging circuit 119. It should be noted that the photovoltaic panel 117 exhibits the following characteristics: the lower the temperature of the photovoltaic panel 117, the higher its photoelectric efficiency; conversely, the higher the temperature of the photovoltaic panel 117, the lower its photoelectric efficiency. Since the liquid layer 118 continuously absorbs heat from the photovoltaic panel 117, it can lower the temperature of the photovoltaic panel 117, thus maintaining a high photoelectric efficiency. Consequently, the battery 120 can store more electrical energy.

[0053] In addition, such as Figure 1 and Figure 3 As shown, the generator heating device also includes a controller 103, a temperature sensor 123, a first switch 121, and a heater 122 disposed on the generator 101. The controller 103 is electrically connected to the photovoltaic panel 117, the first switch 121, and the temperature sensor 123, respectively. The battery 120, the first switch 121, and the heater 122 are sequentially electrically connected. The photovoltaic panel 117 is used to convert solar energy into electrical energy to power the controller 103. The temperature sensor 123 is disposed on the surface of the generator 101 and is used to collect the temperature of the generator 101. The controller 103 is used to control the first switch 121 to close when the temperature of the generator 101 is lower than a temperature threshold. The battery 120 is used to power the heater 122 after the first switch 121 is closed. The element determining whether the temperature of the generator 101 is lower than the temperature threshold can be the controller 103 or a comparator connected to the controller 103.

[0054] Understandably, if the liquid in the reservoir 104 is insufficient to heat the generator 101 to a temperature threshold greater than or equal to the temperature at which the generator 101 can start generating electricity, the electrical energy in the battery 120 can also be used to power the heater 122. In this way, the heater 122 releases heat, which can be transferred to the generator 101, further enabling the generator 101 to maintain its starting temperature for power generation, resulting in high reliability.

[0055] In some embodiments, the generator heating device may include a second switch, and the controller 103 is electrically connected in sequence to the second switch and the first pump 107. The controller 103 is used to periodically control the second switch to close. For example, the controller 103 may be connected to a timer. When the timer reaches a preset duration each time, the controller 103 controls the second switch to close, so as to achieve periodic control of the second switch to close.

[0056] Thus, the controller 103 can periodically control the first pump 107 to draw liquid from the storage tank 104 into the liquid layer 118, thereby saving power consumption. In this embodiment, the liquid can be water, oil, etc., and is not limited thereto.

[0057] like Figure 4 As shown, the generator heating device also includes a voltage converter. The first switch 121 can be a single-pole double-throw switch. The heater 122 is electrically connected to the fixed end of the single-pole double-throw switch, and the controller 103 is also electrically connected to the battery 120. The controller 103 is also used to control the free end of the single-pole double-throw switch to switch to electrical connection with the voltage converter when the battery charge of the battery 120 is lower than a charge threshold. The charge threshold can be 2%, 5%, or 8%, etc., and is not limited here. The element that compares whether the battery charge of the battery 120 is lower than the charge threshold can be the controller 103, or a comparator connected to the controller 103.

[0058] When the free end of the single-pole double-throw switch is switched to electrical connection with the voltage converter, the voltage converter can provide mains power to the heater 122, allowing the heater 122 to continue releasing heat to the generator 101. In this way, when the battery 120 is low on power, the heat from the heater 122 can be transferred to the generator 101, further enabling the generator 101 to maintain its starting temperature for power generation, resulting in high reliability.

[0059] In one possible implementation, the generator heating device includes N heat-absorbing plates and N liquid layers 118, each liquid layer 118 located on the back of a heat-absorbing plate. The inlets 112 and outlets 113 of the N liquid layers 118 are connected in parallel, where N is an integer greater than or equal to 2. For example, N can be an integer such as 2, 3, or 4. In this way, the N heat-absorbing plates can convert more solar energy into electrical energy and store it in the battery 120, allowing for more efficient utilization of solar energy.

[0060] It should be noted that when the heat absorber is a photovoltaic panel 117, each photovoltaic panel 117 is electrically connected to the controller 103 via wires. When there are N photovoltaic panels 117, N wires are required to be electrically connected to the controller 103. Therefore, in order to ensure the wires are arranged in a standardized manner and to protect the wires, a storage box 116 can be set on one side of any liquid layer 118, and the ends of the N wires closest to the liquid layer 118 can be housed in the storage box 116.

[0061] Please refer to Figure 1 This application also provides a power generation system. It should be noted that the power generation system provided in this application has the same basic principle and technical effects as the above embodiments. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the above embodiments. The power generation system provided in this application includes a generator 101 and a generator heating device provided in the above embodiments. The liquid pipe 124 of the generator heating device is wound around the generator 101.

[0062] The generator 101 provided in this application embodiment can be a diesel generator 101 or other types of generator 101, and is not limited thereto. In some scenarios, the generator 101 can be used in a data center, which needs to maintain data continuously. Therefore, the load of the data center (such as servers) needs to be powered at all times. The generator 101 provided in this application embodiment can serve as a backup power source for the data center load after a mains power outage.

[0063] In some implementations, it is still as follows Figure 1 As shown, the power generation system may further include a housing 102, within which the generator 101 can be located. The housing 102 can be a rectangular shell, protecting the generator 101 from damage and facilitating its transport and hoisting. The controller 103 may also be located within the housing 102, further protecting it from damage. Furthermore, having both the generator 101 and controller 103 within the same housing 102 reduces the system's footprint and saves costs. When the generator 101 and controller 103 are located within the same housing 102, the power generation system's appearance can be as shown... Figure 5 As shown.

[0064] In addition, such as Figure 6 As shown, the liquid storage tank 104 of the generator heating device can be integrally formed with the outer casing 102 or detachably connected. This makes the power generation system easier to transport and hoist, and reduces the area occupied by the power generation system.

[0065] In some implementations, it is still as follows Figure 1 As shown, to further improve the power generation efficiency of the photovoltaic panel 117, a support 115 is provided on the top of the outer casing 102, and the photovoltaic panel 117 is mounted on the support 115 at a preset angle to the outer casing 102. The preset angle can range from 30 degrees to 50 degrees (e.g., 30 degrees, 45 degrees, or 50 degrees). This allows the photovoltaic panel 117 to absorb solar energy more fully.

[0066] In some alternative embodiments, one end of the photovoltaic panel 117 is rotatably connected to the top of the housing 102, while the other end of the photovoltaic panel 117 is suspended. The bracket 115 is a telescopic bracket, with one end connected to the top of the housing 102 and the other end connected to the back of the photovoltaic panel 117. This allows the user to adjust the photovoltaic panel 117 to a preset angle with the housing 102 according to the angle of sunlight, enabling the photovoltaic panel 117 to absorb solar energy more fully.

[0067] It should be noted that when the generator 101 is in operation, the first pump 107 and the second pump 108 can be stopped. In this way, the generator loading device no longer heats the generator 101, saving energy.

[0068] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0069] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A generator heating device, characterized in that, The device includes a heat-absorbing plate, a liquid layer, a storage tank, a heat exchange tube, a first pump, a second pump, and a liquid pipe for winding a generator in a mesh-like manner. The liquid layer covers the back of the heat-absorbing plate and is a hollow sandwich layer for liquid flow. An inlet on one side of the liquid layer is connected to an outlet pipe extending into the storage tank. The first pump is located on the outlet pipe of the storage tank, and an outlet on the other side of the liquid layer is connected to the inlet pipe extending into the storage tank. The heat exchange tube is located inside the storage tank and is spiral-shaped. The liquid pipe and the heat exchange tube form a circulation loop. The second pump is located on the liquid pipe. When the... When the first pump is started, it draws liquid from the storage tank and enters the liquid layer through the outlet pipe and the inlet on one side of the liquid layer. After absorbing heat from the heat absorber plate, the liquid flowing into the liquid layer flows out from the outlet on the other side of the liquid layer. When the second pump is turned on, the liquid in the liquid pipe circulates. The heat exchange tube absorbs heat from the liquid in the storage tank, and the liquid pipe and the heat exchange tube form a circulation loop, thereby heating the liquid in the liquid pipe. The heat from the liquid in the liquid pipe is transferred to the generator, which is not in operation, to heat the generator. The heat-absorbing plate is a photovoltaic panel, and the generator heating device also includes a storage battery and a charging circuit. The photovoltaic panel, the charging circuit, and the storage battery are connected in sequence. The photovoltaic panel converts solar energy into electrical energy, and the charging circuit delivers the electrical energy to the storage battery for storage. The device also includes a controller, a temperature sensor, a first switch, and a heater mounted on the generator. The controller is electrically connected to the photovoltaic panel, the first switch, and the temperature sensor, respectively. The battery, the first switch, and the heater are electrically connected in sequence. The photovoltaic panel is used to convert solar energy into electrical energy to power the controller; The temperature sensor is used to collect the temperature of the generator; The controller is used to control the first switch to close when the temperature of the generator is lower than a temperature threshold; wherein the temperature threshold is greater than or equal to the temperature at which the generator can start generating electricity; The battery is used to supply power to the heater after the first switch is closed.

2. The apparatus according to claim 1, characterized in that, The device also includes a voltage converter, the first switch is a single-pole double-throw switch, the heater is electrically connected to the fixed end of the single-pole double-throw switch, the controller is also electrically connected to the battery, and the controller is also used to control the free end of the single-pole double-throw switch to switch to electrical connection with the voltage converter when the battery charge is lower than the charge threshold.

3. The apparatus according to claim 1, characterized in that, The device also includes a second switch, and the controller is electrically connected in sequence to the second switch and the first pump. The controller is used to periodically control the second switch to close.

4. The apparatus according to claim 1, characterized in that, The generator heating device includes N heat-absorbing plates and N liquid layers. Each liquid layer is located on the back of one of the heat-absorbing plates. The inlets and outlets of the N liquid layers are connected in parallel, and N is an integer greater than or equal to 2.

5. The apparatus according to claim 1, characterized in that, The top of the liquid storage tank has air holes.

6. A power generation system comprising a generator and a generator heating device according to any one of claims 1-5, wherein the liquid pipe of the generator heating device is wound around the generator.

7. The power generation system according to claim 6, characterized in that, The power generation system includes a housing, and the generator is located inside the housing.

8. The power generation system according to claim 7, characterized in that, The liquid storage tank of the generator heating device is integrally formed with the outer shell or can be detachably connected.

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