Electric vehicle power supply system, electric vehicle power supply method and power supply equipment

Abstract

The invention provides an electric automobile power supply system, an electric automobile power supply method and power supply equipment, the system comprises a temperature difference power generation module, a voltage stabilization module and a battery module which are arranged on the roof of an electric automobile, the temperature difference power generation module comprises a plurality of temperature difference power generation pieces, and the adjacent temperature difference power generation pieces are electrically connected; the thermoelectric power generation sheet is used for generating current by using temperature difference when the temperature difference exists between the environment outside the electric automobile and the environment inside the electric automobile, and transmitting the generated current to the voltage stabilizing module; the voltage stabilizing module is used for converting the received current transmitted by the thermoelectric power generation sheets into electric energy and transmitting the generated electric energy to the battery module; and the battery module is used for receiving the electric energy transmitted by the voltage stabilizing module. The function of generating electric energy through the temperature difference inside and outside the automobile is achieved, the purpose of reducing power consumption of the electric automobile is achieved, and the cruising ability of the automobile is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to an electric vehicle power supply system, an electric vehicle power supply method and a power supply device. Background Art

[0002] As people's living standards continue to improve, from early fuel-driven to today's new energy vehicles, from a single means of transportation to a carrier of smart travel, cars are not only witnesses of technological progress, but also promoters of social change. In this process, the development and innovation of automotive air-conditioning thermal management technology, as a key link to ensure driving comfort and vehicle performance, is particularly important. Automotive air-conditioning thermal management technology aims to create a comfortable and healthy environment for drivers and passengers by adjusting the temperature and humidity in the car, while optimizing the vehicle's energy efficiency and reducing energy consumption and emissions.

[0003] With the increasing trend of automobile electrification and intelligence, the thermal management of air conditioning systems not only needs to cope with more complex working environments, but also must meet higher standards of environmental protection requirements. Especially in the field of new energy vehicles, thermal management has become the key to ensuring vehicle safety and extending driving range. How to achieve efficient heat exchange in a limited space and provide efficient thermal management solutions to reduce vehicle energy consumption and improve vehicle driving range has become a bottleneck that the industry urgently needs to break through. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide an electric vehicle power supply system, an electric vehicle power supply method and a power supply device, and to add a temperature difference power generation module to the electric vehicle to realize the function of generating electric energy through the temperature difference between the inside and outside of the vehicle. The temperature difference between the inside and outside of the electric vehicle during driving is converted into electric energy to supply the battery module through the thermoelectric effect, thereby achieving the purpose of reducing the power consumption of the electric vehicle and improving the vehicle's endurance.

[0005] In a first aspect, an embodiment of the present application provides an electric vehicle power supply system, the electric vehicle power supply system comprising a thermoelectric power generation module, a voltage stabilizing module and a battery module arranged on the roof of the electric vehicle, wherein the thermoelectric power generation module comprises a plurality of thermoelectric power generation sheets, and each of the adjacent thermoelectric power generation sheets is electrically connected;

[0006] The thermoelectric power generation sheet is used to generate current by utilizing the temperature difference when there is a temperature difference between the external environment and the internal environment of the electric vehicle, and transmit the generated current to the voltage stabilizing module;

[0007] The voltage stabilizing module is used to convert the received current transmitted by the plurality of the thermoelectric power generation sheets into electric energy, and transmit the generated electric energy to the battery module;

[0008] The battery module is used to receive the electric energy transmitted by the voltage stabilizing module.

[0009] Furthermore, a plurality of the thermoelectric power generation sheets in the same column are connected in series to form a thermoelectric power generation column, and the plurality of the thermoelectric power generation columns are connected in parallel to the voltage stabilizing module.

[0010] Further, the battery module includes a power battery;

[0011] The power battery is used to receive the electric energy transmitted by the voltage stabilizing module to convert the electric energy into mechanical energy to drive the electric vehicle.

[0012] Furthermore, the battery module also includes a storage battery;

[0013] The storage battery is used to receive the electric energy transmitted by the voltage stabilizing module, so as to transmit the electric energy to a plurality of low-voltage load modules arranged on the electric vehicle.

[0014] Furthermore, the battery module also includes a DC-DC converter;

[0015] The power battery is also used to transmit the stored high-voltage direct current to the DC-DC converter;

[0016] The DC-DC converter is used to convert the high-voltage direct current into low-voltage direct current and transmit it to the battery;

[0017] The storage battery is also used to receive the low-voltage direct current.

[0018] Furthermore, the electric vehicle power supply system also includes a battery management module;

[0019] The battery management module is used to obtain a first current power level and a charging state of the power battery in real time, and when it is determined that the power battery is fully charged based on the first current power level, or when it is determined that the power battery is currently in a charging state based on the charging state, generate a first stop transmission instruction and send it to the voltage stabilization module;

[0020] The voltage stabilizing module is used to stop transmitting electric energy to the power battery based on the first transmission stop instruction;

[0021] The battery management module is further used to obtain a second current power of the battery in real time, and when it is determined that the battery is fully charged based on the second current power, generate a second stop transmission instruction and send it to the voltage stabilization module;

[0022] The voltage stabilizing module is further configured to stop transmitting electric energy to the storage battery based on the second transmission stop instruction.

[0023] Furthermore, the battery management module is further configured to generate a stop power generation instruction when it is determined based on the first current power level and the second current power level that both the power battery and the storage battery are fully charged, and send the stop power generation instruction to each thermoelectric power generation chip in the thermoelectric power generation module;

[0024] The temperature difference power generation sheet is further used to stop power generation based on the power generation stop instruction.

[0025] In a second aspect, an embodiment of the present application further provides an electric vehicle power supply method, which is applied to an electric vehicle power supply system, wherein the electric vehicle power supply system comprises a thermoelectric power generation module, a voltage stabilizing module and a battery module arranged on the roof of the electric vehicle, wherein the thermoelectric power generation module comprises a plurality of thermoelectric power generation sheets, and each of the adjacent thermoelectric power generation sheets is electrically connected; the electric vehicle power supply method comprises:

[0026] When there is a temperature difference between the external environment and the internal environment of the electric vehicle, the temperature difference power generation sheet generates current by utilizing the temperature difference, and transmits the generated current to the voltage stabilizing module;

[0027] The voltage stabilizing module converts the received current transmitted by the plurality of the thermoelectric power generation sheets into electric energy, and transmits the generated electric energy to the battery module;

[0028] The battery module receives the electric energy transmitted by the voltage stabilizing module.

[0029] In a third aspect, an embodiment of the present application further provides an electric vehicle power supply device, the electric vehicle power supply device comprising a temperature difference power generation device, the temperature difference power generation device comprising a plurality of temperature difference power generation sheets;

[0030] The temperature difference power generation device is installed between the roof sheet metal and the interior ceiling of the electric vehicle, and each temperature difference power generation sheet is horizontally installed below the roof sheet metal;

[0031] The electric vehicle power supply device further includes a first vapor chamber and a second vapor chamber, wherein the first vapor chamber is installed between the roof sheet metal and the temperature difference power generation device, and the second vapor chamber is installed between the temperature difference power generation device and the interior ceiling of the vehicle;

[0032] One end of the temperature difference power generation device contacts the outside of the electric vehicle through the roof sheet metal and the first heat spreader, and the other end of the temperature difference power generation device contacts the passenger compartment of the electric vehicle through the second heat spreader.

[0033] Furthermore, a plurality of the thermoelectric power generation sheets located in the same column are connected in series to form a thermoelectric power generation column, and the plurality of the thermoelectric power generation columns are connected in parallel to the voltage stabilizing module of the electric vehicle.

[0034] In a fourth aspect, an embodiment of the present application further provides an electric vehicle, which includes an electric vehicle power supply device.

[0035] In a fifth aspect, an embodiment of the present application further provides an electronic device, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and when the machine-readable instructions are executed by the processor, the steps of the electric vehicle power supply method as described above are performed.

[0036] In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the electric vehicle power supply method as described above are executed.

[0037] According to an electric vehicle power supply system, an electric vehicle power supply method and a power supply device provided in an embodiment of the present application, the electric vehicle power supply system includes a thermoelectric power generation module, a voltage stabilizing module and a battery module arranged on the roof of the electric vehicle, wherein the thermoelectric power generation module includes a plurality of thermoelectric power generation sheets, and each adjacent thermoelectric power generation sheet is electrically connected; the thermoelectric power generation sheet is used to generate current by utilizing the temperature difference when there is a temperature difference between the external environment and the internal environment of the electric vehicle, and transmit the generated current to the voltage stabilizing module; the voltage stabilizing module is used to convert the received current transmitted by the plurality of thermoelectric power generation sheets into electric energy, and transmit the generated electric energy to the battery module; the battery module is used to receive the electric energy transmitted by the voltage stabilizing module.

[0038] The electric vehicle power supply system provided by the present application generates current in the thermoelectric power generation group through the thermoelectric effect due to the temperature difference between the inside and outside of the vehicle. After the voltage is stabilized by the voltage stabilizing module, the generated electric energy can be charged into the power battery and storage battery of the electric vehicle, or the storage battery can be used to directly supply power to the low-voltage load module in the vehicle. The thermoelectric power generation module is added to the electric vehicle to realize the function of generating electric energy through the temperature difference between the inside and outside of the vehicle. The thermoelectric power generation sheet used does not have a definite cold end and hot end, which enables it to work directly in winter or summer without adding a mechanical structure in the moving direction, thereby improving the stability and service life of the device. The temperature difference between the inside and outside of the electric vehicle during driving is converted into electric energy to supply the battery module through the thermoelectric effect, so as to achieve the purpose of reducing the power consumption of the electric vehicle and improve the endurance of the vehicle. The effect is more significant in winter and summer, which are seasons with high energy consumption. At the same time, the electric vehicle power supply system provided by the embodiment of the present application only occupies a thin layered space in the roof of the vehicle, and has no obvious effect on the passenger space of the passenger compartment.

[0039] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 This is one of the structural schematic diagrams of an electric vehicle power supply system provided in an embodiment of the present application;

[0042] Figure 2 The second structural schematic diagram of an electric vehicle power supply system provided in an embodiment of the present application;

[0043] Figure 3 A schematic side view of an electric vehicle power supply device provided in an embodiment of the present application;

[0044] Figure 4 A schematic top view of an electric vehicle power supply device provided in an embodiment of the present application;

[0045] Figure 5 A flow chart of a method for powering an electric vehicle provided in an embodiment of the present application;

[0046] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work belongs to the scope of protection of the present application.

[0048] First, the application scenarios to which the present application is applicable are introduced. The present application can be applied in the field of electric vehicle technology.

[0049] As people's living standards continue to improve, from early fuel-driven to today's new energy vehicles, from a single means of transportation to a carrier of smart travel, cars are not only witnesses of technological progress, but also promoters of social change. In this process, the development and innovation of automotive air-conditioning thermal management technology, as a key link to ensure driving comfort and vehicle performance, is particularly important. Automotive air-conditioning thermal management technology aims to create a comfortable and healthy environment for drivers and passengers by adjusting the temperature and humidity in the car, while optimizing the vehicle's energy efficiency and reducing energy consumption and emissions.

[0050] Research has found that with the increasing trend of automobile electrification and intelligence, the thermal management of air-conditioning systems not only needs to cope with more complex working environments, but also must meet higher standards of environmental protection requirements. Especially in the field of new energy vehicles, thermal management has become the key to ensuring vehicle safety and extending driving range. How to achieve efficient heat exchange in a limited space and provide efficient thermal management solutions to reduce vehicle energy consumption and improve vehicle driving range has become a bottleneck that the industry urgently needs to break through.

[0051] Based on this, an embodiment of the present application provides an electric vehicle power supply system, which realizes the function of generating electric energy through the temperature difference between the inside and outside of the vehicle, and converts the temperature difference between the inside and outside of the vehicle during the driving of the electric vehicle into electric energy through the thermoelectric effect to supply the battery module, thereby achieving the purpose of reducing the power consumption of the electric vehicle and improving the vehicle's endurance.

[0052] See also Figure 1 , Figure 1 This is one of the structural schematic diagrams of an electric vehicle power supply system provided in the embodiment of the present application. Figure 1 As shown in the figure, the electric vehicle power supply system 10 provided in the embodiment of the present application includes: a thermoelectric power generation module 110, a voltage stabilizing module 120 and a battery module 130 arranged on the roof of the electric vehicle, wherein the thermoelectric power generation module 110 includes a plurality of thermoelectric power generation sheets A1...An, and each adjacent thermoelectric power generation sheet Ai is electrically connected to each other.

[0053] The temperature difference power generation chip Ai is used to generate current by utilizing the temperature difference when there is a temperature difference between the external environment and the internal environment of the electric vehicle, and transmit the generated current to the voltage stabilizing module 120 .

[0054] Here, the temperature difference power generation sheet Ai is mainly used to generate electricity based on the temperature difference between the external environment and the internal environment of the electric vehicle to generate current.

[0055] Here, in the specific implementation, when there is a temperature difference between the outside environment and the inside environment of the electric vehicle, for example, when the temperature is high in summer, during the driving process of the electric vehicle during the day, the roof is directly exposed to the sun and the temperature is high, and when the air conditioner is turned on in the car, it will maintain a lower temperature than the outside environment. At this time, a temperature difference is generated between the inside environment and the inside environment, or when the temperature is low in winter, during the driving process of the electric vehicle, the roof is forced to flow The convection heat exchange temperature of the cold air is low, and when the air conditioner is turned on in the car, it will maintain a higher temperature than the outside environment. At this time, a temperature difference is generated between the inside environment and the inside environment. The temperature difference power generation sheet Ai can generate current by using the temperature difference between the inside and outside of the car, and transmit the generated current to the voltage stabilizing module 120.

[0056] Specifically, the thermoelectric power generation chip Ai uses the Seebeck effect to generate electricity based on temperature difference. The Seebeck effect, also known as the first thermoelectric effect, refers to the thermoelectric phenomenon that the voltage difference between two substances is caused by the temperature difference between two different electrical conductors or semiconductors. The direction of the thermoelectric potential is generally stipulated as follows: electrons flow from negative to positive at the hot end. In a loop composed of two metals A and B, if the temperatures of the two contact points are different, a current will appear in the loop, which is called a thermocurrent. The corresponding electromotive force is called a thermoelectric potential, and its direction depends on the direction of the temperature gradient.

[0057] The cause of the Seebeck effect can be explained as the carriers in the conductor moving from the hot end to the cold end under the temperature gradient and accumulating at the cold end, thereby forming a potential difference inside the material. At the same time, a reverse charge flow is generated under the action of the potential difference. When the charge flow of thermal motion reaches a dynamic equilibrium with the internal electric field, a stable thermoelectric potential is formed at both ends of the semiconductor. The thermoelectric potential of semiconductors is large and can be used as a thermoelectric generator. Thermoelectric power generation uses the Seebeck effect to convert thermal energy into electrical energy. When the two junctions of a pair of thermocouples are at different temperatures, the thermoelectric potential at both ends of the thermocouple can be used as a power source. The commonly used one is the semiconductor thermocouple; this is a DC power generation device made of a group of semiconductor thermocouples connected in series and in parallel. Each thermocouple is composed of an N-type semiconductor and a P-type semiconductor connected in series. The connected end of the two is in contact with a high-temperature heat source, and the non-junction ends of the N-type and P-type semiconductors are in contact with a low-temperature heat source through wires. Due to the temperature difference between the hot end and the cold end, the cold end of P accumulates negative charges and becomes the cathode of the generator; the cold end of N accumulates positive charges and becomes the anode. If connected to an external circuit, current will flow. This type of generator is not very efficient. In order to obtain a larger power output, many pairs of thermocouples are often connected in series and parallel to form a thermopile.

[0058] As an optional embodiment, according to the electric vehicle power supply system provided in the present application, a plurality of the thermoelectric power generation sheets located in the same column are connected in series to form a thermoelectric power generation column, and the plurality of the thermoelectric power generation columns are connected in parallel to the voltage stabilizing module 120 .

[0059] Here, a plurality of thermoelectric power generation sheets in the same column are connected in series to form a thermoelectric power generation column to increase the output, and then the plurality of thermoelectric power generation columns are connected in parallel to the voltage stabilizing module 120 to increase the output current.

[0060] The voltage stabilizing module 120 is used to convert the current transmitted by the multiple thermoelectric power generation sheets A1 . . . An into electrical energy, and transmit the generated electrical energy to the battery module 130 .

[0061] Here, the voltage stabilizing module 120 is mainly used to stabilize the received current to convert it into electric energy with stable voltage that can be received by the battery module 130 .

[0062] Here, in a specific implementation, the voltage stabilizing module 120 receives the current generated by the plurality of thermoelectric power generation sheets A1 . . . An, stabilizes the voltage of the received current to convert it into electrical energy, and transmits the generated electrical energy to the battery module 130 .

[0063] The battery module 130 is used to receive the electric energy transmitted by the voltage stabilizing module 120 .

[0064] Here, the battery module 130 is mainly used to receive the electric energy transmitted by the voltage stabilizing module 120 and use the electric energy to power the electric vehicle. In a specific implementation, the battery module 130 receives the electric energy transmitted by the voltage stabilizing module 120 to use the received electric energy to power the electric vehicle.

[0065] In one embodiment, when the temperature is high in summer, during the daytime driving of an electric vehicle, the roof sheet metal is exposed to direct sunlight and has a high temperature, while the air conditioner is turned on in the car to maintain a relatively low temperature relative to the external environment. At this time, the temperatures of the upper and lower surfaces of the temperature difference power generation group are close to the temperatures of the roof sheet metal and the passenger compartment in the car through the heat spreader, respectively. The upper surface of the temperature difference power generation group serves as the hot end, and the lower surface serves as the cold end. The temperature difference between the two ends forms a voltage and current on each thermoelectric power generation sheet. Multiple thermoelectric power generation sheets are connected in series to form a thermoelectric power generation array to increase the output, and then multiple thermoelectric power generation arrays are connected in parallel to a voltage stabilizing module to increase the output current.

[0066] In another embodiment, when the temperature is low in winter, during the driving of the electric vehicle, the temperature of the roof sheet metal is low due to the forced convection heat exchange of the flowing cold air, while the air conditioner in the car is turned on to maintain a temperature higher than the external environment. At this time, the temperatures of the upper and lower surfaces of the temperature difference power generation group are close to the temperature of the roof sheet metal and the passenger compartment in the car through the heat spreader, respectively. The upper surface of the temperature difference power generation group serves as the cold end, and the lower surface serves as the hot end. The temperature difference between the two ends forms a voltage and current on each thermoelectric power generation sheet. Multiple thermoelectric power generation sheets are connected in series to form a thermoelectric power generation array to increase the output, and then multiple thermoelectric power generation arrays are connected in parallel to the voltage stabilizing module to increase the output current.

[0067] See also Figure 2 , Figure 2 This is a second structural diagram of an electric vehicle power supply system provided in an embodiment of the present application. Figure 2 As shown, according to the electric vehicle power supply system provided by the present application, the battery module 130 includes a power battery 131 .

[0068] The power battery 131 is used to receive the electric energy transmitted by the voltage stabilizing module 120 to convert the electric energy into mechanical energy to drive the electric vehicle.

[0069] Here, the power battery 131 is the energy source of the electric vehicle, responsible for converting electrical energy into mechanical energy to drive the electric vehicle. In specific implementation, the power battery 131 receives the electrical energy transmitted by the voltage stabilizing module 120, and converts the received electrical energy into mechanical energy, drives the wheels to rotate through the transmission system, thereby driving the vehicle to travel.

[0070] Further, such as Figure 2 As shown, according to the electric vehicle power supply system provided by the present application, the battery module 130 also includes a storage battery 132 .

[0071] The storage battery 132 is used to receive the electric energy transmitted by the voltage stabilizing module 120, so as to transmit the electric energy to a plurality of low-voltage load modules arranged on the electric vehicle.

[0072] Here, the battery 132 is a 12V battery. The low-voltage load module refers to an electrical device on an electric vehicle that uses low voltage to work. For example, the low-voltage load module can be a relay, a control unit, a wireless charging plate, a sensor, etc., which is not specifically limited in this application. In a specific implementation, the battery 132 receives the electric energy transmitted by the voltage stabilizing module 120, and transmits the electric energy to multiple low-voltage load modules arranged on the electric vehicle through a low-voltage power supply line, providing 12V voltage for multiple low-voltage load modules.

[0073] Further, such as Figure 2As shown, according to the electric vehicle power supply system provided by the present application, the battery module 130 also includes a DC-DC converter 133 .

[0074] The power battery 131 is also used to transmit the stored high-voltage direct current to the DC-DC converter 133 .

[0075] The DC-DC converter 133 is used to convert the high-voltage direct current into low-voltage direct current and transmit it to the battery 132 .

[0076] The storage battery 132 is also used to receive the low-voltage direct current.

[0077] Here, the DC-DC converter 133 is mainly used to convert the DC high voltage of the power battery 131 into the required DC low voltage. In specific implementation, the power battery 131 transmits the stored high-voltage DC power to the DC-DC converter 133. At the same time, the on-board low-voltage DC-DC converter 20 starts to work, converts the high-voltage DC power into low-voltage DC power, that is, 12V DC power, and transmits it to the battery 132 to provide the battery 132 with a 12V charging power supply, thereby charging the battery 50.

[0078] Further, such as Figure 2 As shown, the electric vehicle power supply system 10 provided in the present application also includes a battery management module 140 .

[0079] The battery management module 140 is used to obtain the first current power and charging status of the power battery 131 in real time. When it is judged that the power battery 131 is fully charged based on the first current power, or when it is judged that the power battery 131 is currently in a charging state based on the charging status, a first stop transmission instruction is generated and sent to the voltage stabilization module 120.

[0080] The voltage stabilizing module 120 is configured to stop transmitting electric energy to the power battery 131 based on the first transmission stop instruction.

[0081] Here, in a specific implementation, the battery management module 140 obtains the first current power and charging status of the power battery 131 in real time. When it is determined that the power battery 131 is fully charged based on the first current power of the power battery 131, in order to avoid overcharging and energy waste, a first stop transmission instruction is generated and sent to the voltage stabilizing module 120. The voltage stabilizing module 120 stops transmitting electric energy to the power battery 131 based on the first stop transmission instruction. Alternatively, when it is determined that the power battery 131 is currently in a charging state based on the charging status of the power battery 131, in order not to affect other charging methods, a first stop transmission instruction is generated and sent to the voltage stabilizing module 120. The voltage stabilizing module 120 stops transmitting electric energy to the power battery 131 based on the first stop transmission instruction.

[0082] The battery management module 140 is also used to obtain a second current power level of the battery 132 in real time, and when it is determined that the battery 132 is fully charged based on the second current power level, a second stop transmission instruction is generated and sent to the voltage stabilization module 120 .

[0083] The voltage stabilizing module 120 is further configured to stop transmitting electric energy to the storage battery 132 based on the second transmission stop instruction.

[0084] Here, in a specific implementation, the battery management module 140 obtains the second current power of the battery 132 in real time, and when it is determined that the battery 132 is fully charged based on the second current power of the battery 132, in order to avoid overcharging and energy waste, a second stop transmission instruction is generated and sent to the voltage stabilization module 120. The voltage stabilization module 120 stops transmitting power to the battery 132 based on the second stop transmission instruction.

[0085] Furthermore, the battery management module 140 is also used to generate a stop power generation instruction when it is determined based on the first current power level and the second current power level that the power battery 131 and the storage battery 132 are both fully charged, and send the stop power generation instruction to each thermoelectric power generation chip A1...An in the thermoelectric power generation module 110.

[0086] The temperature difference power generation sheet Ai is further used to stop power generation based on the power generation stop instruction.

[0087] Here, in a specific implementation, when the battery management module 140 determines that the power battery 131 and the storage battery 132 are both fully charged based on the first current power of the power battery 131 and the second current power of the storage battery 132, in order to avoid overcharging and energy waste, the battery management module 140 turns off charging, generates a stop power generation instruction, and sends the stop power generation instruction to each thermoelectric power generation chip A1...An in the thermoelectric power generation module 110. The thermoelectric power generation chip Ai stops generating electricity based on the stop power generation instruction.

[0088] The electric vehicle power supply system provided in the embodiment of the present application includes a thermoelectric power generation module, a voltage stabilizing module and a battery module arranged on the roof of the electric vehicle, wherein the thermoelectric power generation module includes a plurality of thermoelectric power generation sheets, and each adjacent thermoelectric power generation sheet is electrically connected; the thermoelectric power generation sheet is used to generate current by utilizing the temperature difference when there is a temperature difference between the external environment and the internal environment of the electric vehicle, and transmit the generated current to the voltage stabilizing module; the voltage stabilizing module is used to convert the received current transmitted by the plurality of thermoelectric power generation sheets into electrical energy, and transmit the generated electrical energy to the battery module; the battery module is used to receive the electrical energy transmitted by the voltage stabilizing module.

[0089] According to the electric vehicle power supply system provided by the embodiment of the present application, the temperature difference between the inside and outside of the vehicle generates current in the temperature difference power generation group through the thermoelectric effect. After the voltage is stabilized by the voltage stabilizing module, the generated electric energy can be charged into the power battery and storage battery of the electric vehicle, or the storage battery can be used to directly supply power to the low-voltage load module in the vehicle. The addition of a temperature difference power generation module in the electric vehicle realizes the function of generating electric energy through the temperature difference between the inside and outside of the vehicle. The temperature difference power generation sheet used does not have a definite cold end and hot end, which enables it to work directly in winter or summer without adding a mechanical structure in the moving direction, thereby improving the stability and service life of the device. The temperature difference between the inside and outside of the vehicle during the driving of the electric vehicle is converted into electric energy to supply the battery module through the thermoelectric effect, so as to achieve the purpose of reducing the power consumption of the electric vehicle and improve the endurance of the vehicle. The effect is more significant in winter and summer, which are seasons with high energy consumption. At the same time, the electric vehicle power supply system provided by the embodiment of the present application only occupies a thin layered space in the roof of the vehicle, and has no obvious impact on the passenger space of the passenger compartment.

[0090] See also Figure 3 , Figure 3 This is a side view schematic diagram of an electric vehicle power supply device provided in an embodiment of the present application. Figure 3 As shown, the electric vehicle power supply device 20 includes a temperature difference power generation device 210, and the temperature difference power generation device 210 includes a plurality of temperature difference power generation sheets B1...Bn;

[0091] The temperature difference power generation device 210 is installed between the roof sheet metal and the interior ceiling of the electric vehicle, and each temperature difference power generation sheet B1...Bn is horizontally installed below the roof sheet metal.

[0092] The electric vehicle power supply device 20 also includes a first heat spreader 220 and a second heat spreader 230, wherein the first heat spreader 220 is installed between the roof sheet metal and the temperature difference power generation device 210, and the second heat spreader 230 is installed between the temperature difference power generation device 210 and the interior ceiling of the vehicle; one end of the temperature difference power generation device 210 is in contact with the outside of the electric vehicle through the roof sheet metal and the first heat spreader 220, and the other end of the temperature difference power generation device 210 is in contact with the interior passenger compartment of the electric vehicle through the second heat spreader 230.

[0093] The heat spreader design proposed in this application can ensure that the temperature of the inside and outside of the thermoelectric power generation sheets B1…Bn at different positions in the thermoelectric power generation device 210 are close to each other under adverse conditions such as direct sunlight or one-way cold air blowing, which can stabilize the overall output voltage and current of the thermoelectric power generation device 210, reduce the load of the voltage stabilizing device, provide more stable output power, and improve the overall practicality of the electric vehicle power supply device 20. In addition, the heat spreader can achieve the function of heat insulation, weaken the heat conduction between the inside and outside environment of the vehicle, so as to achieve the effect of reducing the air conditioning load.

[0094] See also Figure 4 , Figure 4 This is a top view of an electric vehicle power supply device provided in an embodiment of the present application. Figure 4 As shown, multiple thermoelectric generators in the same row are connected in series to form a thermoelectric generator train, and multiple thermoelectric generator trains are connected in parallel to the voltage stabilizing module of the electric vehicle. In this way, the temperature difference at both ends forms a voltage and current on each thermoelectric generator, and multiple thermoelectric generators are connected in series to form a thermoelectric generator train to increase the output, and then multiple thermoelectric generator trains are connected in parallel to the voltage stabilizing module to increase the output current.

[0095] The electric vehicle power supply equipment provided by the present application realizes the function of generating electric energy through the temperature difference between the inside and outside of the vehicle. The temperature difference power generation sheet used does not have a definite cold end and hot end, which enables it to work directly in both winter and summer without adding a mechanical structure in the moving direction, thereby improving the stability and service life of the device. The temperature difference between the inside and outside of the electric vehicle during driving is converted into electric energy through the thermoelectric effect, thereby achieving the purpose of reducing the power consumption of the electric vehicle and improving the endurance of the vehicle. The effect is more significant in winter and summer, which are seasons with high energy consumption. At the same time, the electric vehicle power supply system provided in the embodiment of the present application only occupies a thin layered space in the vehicle roof, and has no obvious impact on the passenger space in the passenger compartment.

[0096] The present application also provides an electric vehicle, which includes: Figures 3 to 4 The specific implementation of the electric vehicle power supply equipment shown can be found in the electric vehicle power supply equipment embodiment, which will not be repeated here.

[0097] See also Figure 5 , Figure 5 The flowchart of an electric vehicle power supply method provided in an embodiment of the present application is applied to an electric vehicle power supply system, wherein the electric vehicle power supply system comprises a thermoelectric power generation module, a voltage stabilizing module and a battery module arranged on the roof of the electric vehicle, wherein the thermoelectric power generation module comprises a plurality of thermoelectric power generation sheets, and each adjacent thermoelectric power generation sheet is electrically connected. Figure 5 As shown, the electric vehicle power supply method includes:

[0098] S501, when there is a temperature difference between the external environment and the internal environment of the electric vehicle, the temperature difference power generation sheet generates current by utilizing the temperature difference, and transmits the generated current to the voltage stabilizing module;

[0099] S502, the voltage stabilizing module converts the received current transmitted by the plurality of the thermoelectric power generation sheets into electric energy, and transmits the generated electric energy to the battery module;

[0100] S503, the battery module receives the electric energy transmitted by the voltage stabilizing module.

[0101] Furthermore, a plurality of the thermoelectric power generation sheets in the same column are connected in series to form a thermoelectric power generation column, and the plurality of the thermoelectric power generation columns are connected in parallel to the voltage stabilizing module.

[0102] Furthermore, the battery module includes a power battery; and the electric vehicle power supply method further includes:

[0103] The power battery receives the electric energy transmitted by the voltage stabilizing module to convert the electric energy into mechanical energy to drive the electric vehicle.

[0104] Furthermore, the battery module further includes a storage battery; and the electric vehicle power supply method further includes:

[0105] The storage battery receives the electric energy transmitted by the voltage stabilizing module, so as to transmit the electric energy to a plurality of low-voltage load modules arranged on the electric vehicle.

[0106] Furthermore, the battery module further includes a DC-DC converter; and the electric vehicle power supply method further includes:

[0107] The power battery transmits the stored high-voltage direct current to the DC-DC converter;

[0108] The DC-DC converter converts the high voltage direct current into low voltage direct current and transmits it to the battery;

[0109] The low voltage direct current is received by the battery.

[0110] Furthermore, the electric vehicle power supply system further includes a battery management module; and the electric vehicle power supply method further includes:

[0111] The battery management module acquires a first current power level and a charging state of the power battery in real time, and when it is determined that the power battery is fully charged based on the first current power level, or when it is determined that the power battery is currently in a charging state based on the charging state, generates a first stop transmission instruction and sends it to the voltage stabilization module;

[0112] The voltage stabilizing module stops transmitting electric energy to the power battery based on the first transmission stop instruction;

[0113] The battery management module acquires a second current power of the battery in real time, and when it is determined that the battery is fully charged based on the second current power, generates a second stop transmission instruction and sends it to the voltage stabilization module;

[0114] The voltage stabilizing module stops transmitting electric energy to the battery based on the second transmission stop instruction.

[0115] Furthermore, the electric vehicle power supply method further includes:

[0116] When the battery management module determines that the power battery and the storage battery are both fully charged based on the first current power and the second current power, a stop power generation instruction is generated, and the stop power generation instruction is sent to each thermoelectric power generation chip in the thermoelectric power generation module;

[0117] The thermoelectric power generation sheet stops power generation based on the power generation stop instruction.

[0118] The electric vehicle power supply method provided in the embodiment of the present application realizes the function of generating electric energy through the temperature difference between the inside and outside of the vehicle. The temperature difference power generation sheet used does not have a definite cold end and hot end, which enables it to work directly in both winter and summer without adding a mechanical structure in the moving direction, thereby improving the stability and service life of the device. The temperature difference between the inside and outside of the electric vehicle during driving is converted into electric energy through the thermoelectric effect, thereby achieving the purpose of reducing the power consumption of the electric vehicle and improving the endurance of the vehicle. The effect is more significant in winter and summer, which are seasons with high energy consumption. At the same time, the electric vehicle power supply system provided in the embodiment of the present application only occupies a thin layered space in the vehicle roof, and has no obvious impact on the passenger space in the passenger compartment.

[0119] See also Figure 6 , Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 6 As shown in , the electronic device 600 includes a processor 610 , a memory 620 and a bus 630 .

[0120] The memory 620 stores machine-readable instructions executable by the processor 610. When the electronic device 600 is running, the processor 610 communicates with the memory 620 via the bus 630. When the machine-readable instructions are executed by the processor 610, the above-mentioned Figure 5 The specific implementation of the steps of the electric vehicle power supply method in the method embodiment shown can be found in the method embodiment, which will not be repeated here.

[0121] The present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program can execute the above-mentioned Figure 5 The specific implementation of the steps of the electric vehicle power supply method in the method embodiment shown can be found in the method embodiment, which will not be repeated here.

[0122] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0123] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0124] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0125] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0126] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application can essentially be embodied in the form of a software product, or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0127] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An electric vehicle power supply system, characterized in that: The electric vehicle power supply system comprises a thermoelectric power generation module, a voltage stabilizing module and a battery module arranged on the roof of the electric vehicle, wherein the thermoelectric power generation module comprises a plurality of thermoelectric power generation sheets, and each of the adjacent thermoelectric power generation sheets is electrically connected; The thermoelectric power generation sheet is used to generate current by utilizing the temperature difference when there is a temperature difference between the external environment and the internal environment of the electric vehicle, and transmit the generated current to the voltage stabilizing module; The voltage stabilizing module is used to convert the received current transmitted by the plurality of the thermoelectric power generation sheets into electric energy, and transmit the generated electric energy to the battery module; The battery module is used to receive the electric energy transmitted by the voltage stabilizing module.

2. The electric vehicle power supply system according to claim 1, characterized in that: A plurality of the thermoelectric power generation sheets located in the same column are connected in series to form a thermoelectric power generation column, and the plurality of the thermoelectric power generation columns are connected in parallel to the voltage stabilizing module.

3. The electric vehicle power supply system according to claim 1, characterized in that: The battery module includes a power battery; The power battery is used to receive the electric energy transmitted by the voltage stabilizing module to convert the electric energy into mechanical energy to drive the electric vehicle.

4. The electric vehicle power supply system according to claim 3, characterized in that: The battery module also includes a storage battery; The storage battery is used to receive the electric energy transmitted by the voltage stabilizing module, so as to transmit the electric energy to a plurality of low-voltage load modules arranged on the electric vehicle.

5. The electric vehicle power supply system according to claim 4, characterized in that: The battery module also includes a DC-DC converter; The power battery is also used to transmit the stored high-voltage direct current to the DC-DC converter; The DC-DC converter is used to convert the high-voltage direct current into low-voltage direct current and transmit it to the battery; The storage battery is also used to receive the low-voltage direct current.

6. The electric vehicle power supply system according to claim 4, characterized in that: The electric vehicle power supply system also includes a battery management module; The battery management module is used to obtain a first current power level and a charging state of the power battery in real time, and when it is determined that the power battery is fully charged based on the first current power level, or when it is determined that the power battery is currently in a charging state based on the charging state, generate a first stop transmission instruction and send it to the voltage stabilization module; The voltage stabilizing module is used to stop transmitting electric energy to the power battery based on the first transmission stop instruction; The battery management module is further used to obtain a second current power of the battery in real time, and when it is determined that the battery is fully charged based on the second current power, generate a second stop transmission instruction and send it to the voltage stabilization module; The voltage stabilizing module is further configured to stop transmitting electric energy to the storage battery based on the second transmission stop instruction.

7. The electric vehicle power supply system according to claim 6, characterized in that: The battery management module is further configured to generate a power generation stop instruction when it is determined based on the first current power level and the second current power level that the power battery and the storage battery are both fully charged, and send the power generation stop instruction to each thermoelectric power generation sheet in the thermoelectric power generation module; The temperature difference power generation sheet is further used to stop power generation based on the power generation stop instruction.

8. A method for powering an electric vehicle, characterized in that: The electric vehicle power supply method is applied to the electric vehicle power supply system according to any one of claims 1 to 7, wherein the electric vehicle power supply system comprises a thermoelectric power generation module, a voltage stabilizing module and a battery module arranged on the roof of the electric vehicle, wherein the thermoelectric power generation module comprises a plurality of thermoelectric power generation sheets, and each of the adjacent thermoelectric power generation sheets is electrically connected; the electric vehicle power supply method comprises: When there is a temperature difference between the external environment and the internal environment of the electric vehicle, the temperature difference power generation sheet generates current by utilizing the temperature difference, and transmits the generated current to the voltage stabilizing module; The voltage stabilizing module converts the received current transmitted by the plurality of the thermoelectric power generation sheets into electric energy, and transmits the generated electric energy to the battery module; The battery module receives the electric energy transmitted by the voltage stabilizing module.

9. An electric vehicle power supply device, characterized in that: The electric vehicle power supply equipment includes a temperature difference power generation device, and the temperature difference power generation device includes a plurality of temperature difference power generation sheets; The temperature difference power generation device is installed between the roof sheet metal and the interior ceiling of the electric vehicle, and each temperature difference power generation sheet is horizontally installed below the roof sheet metal; The electric vehicle power supply device further includes a first vapor chamber and a second vapor chamber, wherein the first vapor chamber is installed between the roof sheet metal and the temperature difference power generation device, and the second vapor chamber is installed between the temperature difference power generation device and the interior ceiling of the vehicle; One end of the temperature difference power generation device contacts the outside of the electric vehicle through the roof sheet metal and the first heat spreader, and the other end of the temperature difference power generation device contacts the passenger compartment of the electric vehicle through the second heat spreader.

10. The electric vehicle power supply device according to claim 9, characterized in that: A plurality of the thermoelectric power generation sheets located in the same row are connected in series to form a thermoelectric power generation column, and the plurality of the thermoelectric power generation columns are connected in parallel to the voltage stabilizing module of the electric vehicle.

11. An electric vehicle, characterized in that: The electric vehicle comprises the electric vehicle power supply device as described in any one of claims 9-10.

12. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and the machine-readable instructions are executed by the processor to execute the steps of the electric vehicle power supply method as claimed in claim 8.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the electric vehicle power supply method as claimed in claim 8 are executed.

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