Power conversion device, power supply, vehicle, and power supply preheating method

Abstract

The application discloses a power conversion device, a power supply, a vehicle and a power supply preheating method. The power conversion device comprises a DCDC conversion module, a timing wake-up module and a remote module. The input port of the DCDC conversion module is connected with a charging port, the output port of the DCDC conversion module is connected with a power management module, the DCDC conversion module is used for outputting a direct current low voltage for power supply of the power management module after direct current conversion; the timing wake-up module is connected with the power management module, and the timing wake-up module is used for waking up the power management module at a preset interval time; the remote module is connected with a charging device and the power management module, the remote module is used for receiving a power detection signal sent by the power management module, and a charging control signal is generated according to the received power detection signal and is sent to the charging device, so as to control power supply of the charging device. The timing wake-up module is used for timing wake-up of the power management module, and the power management module output power detection signal is realized.

Description

Technical Field

[0001] This invention relates to the technical field of electric vehicles, and more particularly to a power conversion device, a power supply, a vehicle, and a power supply preheating method. Background Technology

[0002] The battery in an electric vehicle serves as its power source, providing power to the vehicle. The state of the battery directly affects the vehicle's operating condition. In northern regions, the low temperatures cause the battery to enter a dormant state, preventing the vehicle from functioning properly.

[0003] Currently, to ensure vehicle batteries operate normally in low-temperature environments, they are typically discharged to restore them to normal, allowing the vehicle to function properly. However, discharging batteries in low-temperature environments severely impacts their driving range. Summary of the Invention

[0004] This invention provides a power conversion device, a power supply, a vehicle, and a power supply preheating method to solve the problem of shortened driving range caused by low-temperature discharge of batteries in the prior art.

[0005] According to one aspect of the present invention, a power conversion device is provided, the power conversion device including a DC-DC conversion module, a timed wake-up module and a remote module; the input port of the DC-DC conversion module is connected to a charging port, the output port of the DC-DC conversion module is connected to a power management module, and the DC-DC conversion module is used to output a low DC voltage after DC-DC conversion to power the power management module;

[0006] The timed wake-up module is connected to the power management module, and the timed wake-up module is used to wake up the power management module at a preset interval.

[0007] The remote module connects the charging device and the power management module. The remote module is used to receive the power detection signal sent by the power management module and generate a charging control signal based on the received power detection signal, which is then sent to the charging device to control the power supply of the charging device.

[0008] Optionally, the remote module includes a transmitting submodule, which is communicatively connected to the charging device and is used to transmit the charging control signal generated by the remote module to the charging device.

[0009] According to another aspect of the present invention, a power supply is provided, the power supply including a battery, a power management module, a charging control module, a discharging control module, and the power conversion device, wherein the power management module is connected to the charging control module and the discharging control module, and the power management module controls the charging control module and the discharging control module to be turned on or off according to the power detection signal; the charging control module is connected to the charging port and the battery, and the charging control module is used to disconnect or connect the charging port and the battery; the discharging control module is connected to the discharging port and the battery, and the discharging control module is used to disconnect or connect the battery and the discharging port.

[0010] Optionally, the power supply further includes a heating module disposed on the surface of the battery, the heating module being used to heat the battery; the heating module is connected to the power management module and the charging port, and the heating module is used to heat the battery according to the power detection signal.

[0011] Optionally, the heating module includes a heating film, a first switch module, and a second switch module; one end of the heating film is connected to the first end of the first switch module, the other end of the heating film is connected to the first end of the second switch module, the second end of the first switch module is connected to the charging port, and the second end of the second switch module is connected to the charging port.

[0012] Optionally, the heating module further includes a heating fuse, one end of which is connected to the second end of the first switch module, and the other end of which is connected to the charging port.

[0013] Optionally, the first switching module includes a heating positive relay; one end of the normally open contact of the heating positive relay is connected to a first terminal of the first switching module, and the other end of the normally open contact of the heating positive relay is connected to a second terminal of the first switching module; the electromagnetic coil of the heating positive relay is connected to the power management module; the second switching module includes a heating negative relay; one end of the normally open contact of the heating negative relay is connected to a first terminal of the second switching module, and the other end of the normally open contact of the heating negative relay is connected to a second terminal of the second switching module; the electromagnetic coil of the heating negative relay is connected to the power management module.

[0014] Optionally, the charging control module includes a positive charging relay and a negative charging relay; one end of the normally open contact of the positive charging relay is connected to the positive terminal of the battery, and the other end of the normally open contact of the positive charging relay is connected to the charging port, and the relay coil of the positive charging relay is connected to the power management module; one end of the normally open contact of the negative charging relay is connected to the negative terminal of the battery, and the other end of the normally open contact of the negative charging relay is connected to the charging port, and the relay coil of the negative charging relay is connected to the power management module.

[0015] Optionally, the discharge control module includes a positive discharge relay and a negative discharge relay; one end of the normally open contact of the positive discharge relay is connected to the positive terminal of the battery, and the other end of the normally open contact of the positive discharge relay is connected to the discharge port, and the relay coil of the positive discharge relay is connected to the power management module; one end of the normally open contact of the negative discharge relay is connected to the negative terminal of the battery, and the other end of the normally open contact of the negative discharge relay is connected to the discharge port, and the relay coil of the negative discharge relay is connected to the power management module.

[0016] According to another aspect of the invention, a vehicle is provided, the vehicle including the power source.

[0017] According to another aspect of the present invention, a power supply preheating method is provided, the method comprising:

[0018] The charging port is connected to the charging device;

[0019] The timed wake-up module wakes up the power management module at a preset interval.

[0020] The power management module outputs the power detection signal to the remote module;

[0021] The remote module generates a charging control signal based on the power detection signal and sends it to the charging device to control the power supply of the charging device.

[0022] Optionally, the power detection signal includes a remaining power signal; the remote module generates a charging control signal based on the power detection signal and sends it to the charging device to control the charging device to supply power, including: when the remaining power signal is less than a preset power threshold, controlling the charging control module to connect the charging port to the battery; when the remaining power signal is greater than or equal to the preset power threshold, controlling the charging control module to disconnect the charging port from the battery.

[0023] Optionally, the power detection signal includes a temperature signal; the power source includes a heating module disposed on the surface of the battery, the heating module being used to heat the battery, and the heating module being connected to the power management module and the charging port; the remote module generates a charging control signal based on the power detection signal and sends it to the charging device to control the power supply of the charging device, including: when the temperature signal is less than a first preset temperature threshold, controlling the heating module to connect to the charging port, and the heating module heating the battery; when the temperature signal is not less than a second preset temperature threshold, controlling the heating module to disconnect from the charging port.

[0024] Optionally, after the timed wake-up module wakes up the power management module at a preset interval, the method further includes: determining whether the battery has triggered a level 3 serious fault; if a level 3 serious fault is triggered, controlling the charging control module to disconnect the charging port from the battery.

[0025] Optionally, after the timed wake-up module wakes up the power management module at a preset interval, the method further includes: determining whether the battery has triggered a level 3 serious fault; if a level 3 serious fault is triggered, controlling the heating module to disconnect from the charging port.

[0026] This invention provides a power conversion device, comprising a DC-DC conversion module, a timed wake-up module, and a remote module. The input port of the DC-DC conversion module is connected to a charging port, and its output port is connected to a power management module. The DC-DC conversion module outputs a low-voltage DC power to the power management module after DC-DC conversion. The timed wake-up module is connected to the power management module and wakes it up at preset intervals. The remote module connects to a charging device and the power management module. The remote module receives a power detection signal from the power management module and generates a charging control signal based on the received signal, sending it to the charging device to control the charging device's power supply. This invention uses a timed wake-up module to periodically wake up the power management module, enabling the power management module to output a power detection signal. The remote module generates a charging control signal and sends it to the charging device, which then supplies power based on the received signal. This maintains the battery's range at a full charge, solving the problem of shortened battery range due to low-temperature discharge in existing technologies.

[0027] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a power conversion device provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of another power conversion device provided in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of a power supply provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of another power supply structure provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the heating module provided in an embodiment of the present invention;

[0034] Figure 6 This is a circuit diagram of a power supply provided in an embodiment of the present invention;

[0035] Figure 7 This is a flowchart of a power supply preheating method provided in an embodiment of the present invention;

[0036] Figure 8 This is a flowchart of another power supply preheating method provided in an embodiment of the present invention. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] This invention provides a power conversion device. Figure 1 This is a schematic diagram of the structure of a power conversion device provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the power conversion device 100 includes a DC-DC conversion module 110, a timed wake-up module 120, and a remote module 130. The input port a1 of the DC-DC conversion module 110 is connected to the charging port c, and the output port b1 of the DC-DC conversion module 110 is connected to the power management module. The DC-DC conversion module 110 is used to output a low DC voltage after DC-DC conversion to power the power management module. The timed wake-up module 120 is connected to the power management module and is used to wake up the power management module at a preset interval. The remote module 130 is connected to the charging device and the power management module. The remote module 130 is used to receive the power detection signal sent by the power management module and generate a charging control signal based on the received power detection signal, which is then sent to the charging device to control the power supply of the charging device.

[0040] In this embodiment, the power conversion device 100 is a device for converting voltage, the DC-DC converter module 110 can convert DC voltage to DC voltage, the timed wake-up module 120 works cyclically according to the set wake-up period, and the remote module 130 is a module for remote communication, such as radio communication.

[0041] The remote module 130 generates a charging control signal by receiving a power detection signal output from the power management module. The remote module 130 then sends the charging control signal to the charging device via a communication connection. The charging device supplies power according to the charging control signal. Since the charging device is connected to the charging port c, it transmits electrical energy to the charging port c. For example, the power detection signal includes a remaining power signal. When the remaining power signal is less than a preset threshold, the charging control signal generated by the remote module 130 based on the received power detection signal is a charging enable signal, and the charging device supplies power according to the received charging control signal. When the remaining power signal is not less than the preset threshold, the charging control signal generated by the remote module 130 based on the received power detection signal is a charging stop signal, and the charging device stops supplying power according to the received charging control signal.

[0042] This embodiment provides a power conversion device, including a DC-DC conversion module 110, a timed wake-up module 120, and a remote module 130. The input port of the DC-DC conversion module 110 is connected to the charging port, and the output port of the DC-DC conversion module 110 is connected to the power management module. The DC-DC conversion module 110 outputs a low-voltage DC power supply to the power management module after DC-DC conversion. The timed wake-up module 120 is connected to the power management module and is used to wake up the power management module at preset intervals. The remote module 130 connects the charging device and the power management module. The remote module 130 receives the power detection signal sent by the power management module and generates a charging control signal based on the received power detection signal, which is then sent to the charging device to control the power supply of the charging device. This invention uses the timed wake-up module 120 to periodically wake up the power management module, enabling the power management module to output a power detection signal. The remote module generates a charging control signal and sends it to the charging device, which then supplies power according to the received charging control signal. This maintains the battery's range at a full charge, solving the problem of shortened battery range due to low-temperature discharge in the prior art.

[0043] Figure 2 This is a schematic diagram of another power conversion device provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the remote module 130 includes a transmitting submodule 210, which is communicatively connected to the charging device. The transmitting submodule 210 transmits charging control signals generated by the remote module 130 to the charging device. The transmitting submodule 210 is a remote control device that uses radio signals to wirelessly transmit data with the remote device and control various mechanisms at the remote location. By using the transmitting submodule 210 to achieve wireless data communication between the remote module 130 and the charging device, it offers advantages such as convenient installation and cost savings.

[0044] This invention provides a power supply. Figure 3 This is a schematic diagram of a power supply structure provided in an embodiment of the present invention, such as... Figure 3 As shown, the power supply 300 includes a battery 310, a power management module 320, a charging control module 330, a discharging control module 340, and a power conversion device 100. The power management module 320 is connected to the charging control module 330 and the discharging control module 340, and controls the charging control module 330 and the discharging control module 340 to be turned on or off according to the power detection signal. The charging control module 330 is connected to the charging port c and the battery 310, and is used to disconnect or connect the charging port c and the battery 310. The discharging control module 340 is connected to the discharging port f and the battery 310, and is used to disconnect or connect the battery 310 and the discharging port f.

[0045] In this embodiment, the power supply 300 is a device that provides electrical energy, and the battery 310 is a form of the power supply 300. For example, the battery 310 can store and use electrical energy. The main function of the power management module 320 is to collect data such as voltage, temperature, current, and resistance of the battery 310, and to monitor and control the charging and discharging process of the battery 310 by analyzing the data status and the battery's operating environment. The charging control module 330 is a module that controls the connection or disconnection between the charging port c and the battery 310, and the discharging control module 340 is a port that controls the connection or disconnection between the battery 310 and the discharging port f. Taking the charging control module 330 as an example, when the remaining power signal output by the power management module 320 is less than a preset threshold, the power management module 320 controls the charging control module 330 to turn on. At this time, the charging port c and the battery 310 are connected, and the power supply energy of the charging device is transmitted to the battery 310 through the charging port c, and the battery 310 is charged. When the remaining battery power signal output by the power management module 320 is not less than a preset threshold, the power management module 320 controls the charging control module 330 to shut down. At this time, the charging port c is disconnected from the battery 310, and the power supply from the charging device cannot be transmitted to the battery 310 through the charging port c. The charging control module 330 turns on or off according to the power detection signal output by the power management module 320, so that the battery power remains not lower than the preset threshold, thereby improving the battery's startup efficiency.

[0046] Figure 4 This is a schematic diagram of another power supply structure provided in an embodiment of the present invention, such as... Figure 4 As shown, the power supply 300 also includes a heating module 410, which is disposed on the surface of the battery 310 and is used to heat the battery 310. The heating module 410 is connected to the power management module 320 and the charging port c, and is used to heat the battery 310 according to the power detection signal.

[0047] In this embodiment, the heating module 410 is a module for heating the battery 310 to raise its temperature. For example, the power detection signal output by the power management module 320 includes a temperature signal. When the temperature signal is lower than a first preset temperature threshold, the heating module 410 heats the battery 310; when the temperature signal is not lower than a second preset temperature threshold, the heating module 410 stops heating the battery 310. By heating the battery 310, the heating module 410 ensures that the battery temperature is not lower than the first preset temperature, thereby extending the battery's lifespan and increasing its driving range.

[0048] Figure 5 This is a schematic diagram of the heating module provided in an embodiment of the present invention, as shown below. Figure 5 As shown, the heating module 410 includes a heating film 510, a first switch module 520, and a second switch module 530. One end of the heating film 510 is connected to the first terminal a51 of the first switch module 520, and the other end of the heating film 510 is connected to the first terminal a52 of the second switch module 530. The second terminal b51 of the first switch module 520 is connected to the charging port c, and the second terminal b52 of the second switch module 530 is also connected to the charging port c. The heating film 510 is a thin-film flexible heating film that can be attached to the surface of the battery 310 to create a heating environment and increase the ambient temperature of the battery 310 during use. The first switch module 520 is connected between the heating film 510 and the charging port c, and the second switch module 530 is also connected between the heating film 510 and the charging port c. Both the first switch module 520 and the second switch module 530 are used to control the connection or disconnection of the heating film 510 and the charging port c. When the heating film 510 and the charging port c are connected, the heating film 510 heats the battery 310. When the heating film 510 and the charging port c are disconnected, the heating film 510 stops heating the battery 310.

[0049] Continue to refer to Figure 5 The heating module 410 also includes a heating fuse 540. One end of the heating fuse 540 is connected to the second terminal b51 of the first switch module 520, and the other end is connected to the charging port c. The heating fuse 540 is a safety component that ensures the safe operation of the circuit. When a circuit malfunctions or becomes abnormal, the current continuously increases, potentially damaging important components. By installing the heating fuse 540, it melts and breaks the current when the current abnormally rises to a certain level, thus protecting the circuit's safe operation.

[0050] Figure 6 This is a circuit diagram of a power supply provided in an embodiment of the present invention, such as... Figure 6As shown, the first switching module 520 in the heating module 410 includes a heating positive relay KT1; one end of the normally open contact of the heating positive relay KT1 is connected to the first terminal a51 of the first switching module 520, and the other end of the normally open contact of the heating positive relay KT1 is connected to the second terminal b51 of the first switching module 520; the electromagnetic coil of the heating positive relay KT1 is connected to the power management module 320; the second switching module 530 includes a heating negative relay KT2; one end of the normally open contact of the heating negative relay KT2 is connected to the first terminal a52 of the second switching module 530, and the other end of the normally open contact of the heating negative relay KT2 is connected to the second terminal b52 of the second switching module 530; the electromagnetic coil of the heating negative relay KT2 is connected to the power management module 320.

[0051] In this embodiment, the heating positive relay KT1 closes or opens its normally open contact based on the power detection signal output by the power management module 320, and the heating negative relay KT2 closes or opens its normally open contact based on the power detection signal output by the power management module 320. For example, the power detection signal output by the power management module 320 includes a temperature signal. When the temperature signal is lower than a first preset temperature threshold, the normally open contact of the heating positive relay KT1 closes, the normally open contact of the heating negative relay KT2 closes, and the heating module 410 heats the battery 310. When the temperature signal is not lower than a second preset temperature threshold, the normally open contact of the heating positive relay KT1 opens, the normally open contact of the heating negative relay KT2 opens, and the heating module 410 stops heating the battery 310.

[0052] Continue to refer to Figure 6 The charging control module 330 includes a positive charging relay KT3 and a negative charging relay KT4. One end of the normally open contact of the positive charging relay KT3 is connected to the positive terminal of the battery 310, and the other end of the normally open contact of the positive charging relay KT3 is connected to the charging port c. The relay coil of the positive charging relay KT3 is connected to the power management module 320. One end of the normally open contact of the negative charging relay KT4 is connected to the negative terminal of the battery 310, and the other end of the normally open contact of the negative charging relay KT4 is connected to the charging port c. The relay coil of the negative charging relay KT4 is connected to the power management module 320.

[0053] In this embodiment, charging port c includes a positive terminal and a negative terminal. The normally open contact of the positive charging relay KT3 is connected to the positive terminal of charging port c. The positive charging relay KT3 closes or opens its normally open contact according to the power detection signal output by the power management module 320. The normally open contact of the negative charging relay KT4 is connected to the negative terminal of charging port c. The negative charging relay KT4 closes or opens its normally open contact according to the power detection signal output by the power management module 320. For example, the power detection signal output by the power management module 320 includes a remaining power signal. When the remaining power signal is less than a preset threshold, the normally open contact of the positive charging relay KT3 closes, the normally open contact of the negative charging relay KT4 closes, the positive terminal of charging port c is connected to the positive terminal of battery 310, and the negative terminal of charging port c is connected to the negative terminal of battery 310. The power supply energy of the charging device is transmitted to battery 310 through charging port c, and battery 310 is charged at this time. When the remaining power signal is not less than the preset threshold, the normally open contact of the positive charging relay KT3 opens, the normally open contact of the negative charging relay KT4 opens, the positive terminal of charging port c is disconnected from the positive terminal of battery 310, and the negative terminal of charging port c is disconnected from the negative terminal of battery 310. The power supply of the charging device cannot be transmitted to battery 310 through charging port c, and at this time, battery 310 stops charging.

[0054] Continue to refer to Figure 6 The discharge control module 340 includes a positive discharge relay KT5 and a negative discharge relay KT6. One end of the normally open contact of the positive discharge relay KT5 is connected to the positive terminal of the battery 310, and the other end of the normally open contact of the positive discharge relay KT5 is connected to the discharge port f. The relay coil of the positive discharge relay KT5 is connected to the power management module 320. One end of the normally open contact of the negative discharge relay KT6 is connected to the negative terminal of the battery 310, and the other end of the normally open contact of the negative discharge relay KT6 is connected to the discharge port f. The relay coil of the negative discharge relay KT6 is connected to the power management module 320.

[0055] In this embodiment, the discharge port f includes a positive terminal and a negative terminal. The normally open contact of the positive discharge relay KT5 is connected to the positive terminal of the discharge port f. The positive discharge relay KT5 closes or opens its normally open contact according to the power detection signal output by the power management module 320. The normally open contact of the negative discharge relay KT6 is connected to the negative terminal of the discharge port f. The negative discharge relay KT6 closes or opens its normally open contact according to the power detection signal output by the power management module 320. For example, when the power management module 320 controls the normally open contact of the positive discharge relay KT5 to close and the normally open contact of the negative discharge relay KT6 to close, the positive terminal of the discharge port f is connected to the positive terminal of the battery 310, and the negative terminal of the discharge port f is connected to the negative terminal of the battery 310. The battery 310 discharges and transmits electrical energy to the discharge port f. When the normally open contact of the positive discharge relay KT5 and the normally open contact of the negative discharge relay KT6 are opened, the normally open contact of the positive discharge relay KT5 and the normally open contact of the negative discharge relay KT6 are opened. The positive terminal of the discharge port f is disconnected from the positive terminal of the battery 310, and the negative terminal of the discharge port f is disconnected from the negative terminal of the battery 310. The power supply of the charging device cannot be transmitted to the battery 310 through the charging port c. At this time, the battery 310 stops discharging.

[0056] In summary, this embodiment uses the power management module 320 to monitor the state of the battery 310 in real time and obtain a power detection signal. The charging control module 330 and the heating module 410 control the charging and heating processes of the battery 310 according to the power detection signal, so that the remaining power and temperature of the battery 310 are kept within a preset range, which helps to extend the service life of the battery 310 and improve the driving range of the battery 310.

[0057] This invention provides a vehicle, which includes a power source provided in any embodiment of the invention. The vehicle refers to an electric vehicle. By applying the power source to the vehicle, the timed wake-up module 120 can periodically wake up the power management module 320, keeping the remaining charge and temperature of the battery 310 within a preset range. This keeps the vehicle battery active and prevents the vehicle from malfunctioning due to low temperatures. For vehicles equipped with a T-BOX (Telematics BOX), the power management module 320 is connected to the T-BOX. The power management module 320 uploads real-time battery information data from the T-BOX to the backend, ensuring that customers are aware of the vehicle's status in real time.

[0058] Based on the above embodiments, this embodiment of the invention provides a power supply preheating method, which can be executed by the power supply 300. Figure 7 This is a flowchart of a power supply preheating method provided in an embodiment of the present invention, such as... Figure 7 As shown, the method includes:

[0059] S710, charging port c connects to the charging device;

[0060] S720, the timed wake-up module 120 wakes up the power management module 320 according to a preset interval;

[0061] S730 and power management module 320 output power detection signals to remote module 130;

[0062] S740 and remote module 130 generate charging control signals based on power detection signals and send them to the charging equipment to control the power supply of the charging equipment.

[0063] In this embodiment, the power management module is woken up by the timed wake-up module 120, so that the power management module can monitor the battery in real time. The charging control signal is generated by the remote module 130 and sent to the charging device. The charging device supplies power according to the received charging control signal. The power supplied by the charging device is transmitted to the battery through the charging port c, so that the battery remains active.

[0064] Optionally, the power detection signal includes a remaining power signal; the remote module 130 generates a charging control signal based on the power detection signal and sends it to the charging device to control the power supply of the charging device, including: when the remaining power signal is less than a preset power threshold, controlling the charging control module 330 to connect the charging port c to the battery 310; when the remaining power signal is greater than or equal to the preset power threshold, controlling the charging control module 330 to disconnect the charging port c from the battery 310.

[0065] Optionally, the power detection signal includes a temperature signal; the power supply 300 includes a heating module 410, which is disposed on the surface of the battery 310 and used to heat the battery 310. The heating module 410 is connected to the power management module 320 and the charging port c; the remote module 130 generates a charging control signal based on the power detection signal and sends it to the charging device to control the power supply of the charging device, including: when the temperature signal is less than a first preset temperature threshold, controlling the heating module 410 to connect to the charging port c, and the heating module 410 to heat the battery 310; when the temperature signal is not less than a second preset temperature threshold, controlling the heating module 410 to disconnect from the charging port c.

[0066] Optionally, after the timed wake-up module 120 wakes up the power management module 320 at a preset interval, it determines whether the battery 310 has triggered a level three serious fault. If a level three serious fault is triggered, the charging control module 330 is controlled to disconnect the charging port c from the battery 310.

[0067] Optionally, after the timed wake-up module 120 wakes up the power management module 320 at a preset interval, it determines whether the battery 310 has triggered a level three serious fault. If a level three serious fault is triggered, it controls the heating module 410 to disconnect from the charging port c.

[0068] For example, Figure 8 This is a flowchart of another power supply preheating method provided in an embodiment of the present invention, such as... Figure 8 As shown, the timed wake-up module 120 wakes up the power management module 320 every half hour to determine whether the charging device is connected to the charging port. If the charging device is not connected to the charging port, the power management module 320 uploads real-time data via T-BOX. If the charging device is connected to the charging port, it determines whether the battery 310 has a level 3 serious fault. If a level 3 serious fault exists, charging is prohibited (i.e., the charging control module controls the charging port to disconnect from the battery). If no level 3 serious fault exists, it determines whether the battery's remaining charge (SOC) is 100%. When the battery's remaining charge is 100%, it determines whether the battery temperature is less than M degrees (i.e., the first preset temperature threshold). If the battery temperature is less than M degrees, the battery is in pure heating mode (i.e., the heating module is connected to the charging port, and the charging control module controls the charging port to disconnect from the battery). If the battery temperature is not less than M degrees, the power management module 320 uploads real-time data via T-BOX. When the battery is in pure heating mode, it checks whether there is a level 3 serious fault in the battery. If there is a level 3 serious fault, after a 10-second delay, the normally open contacts of the heating positive relay, heating negative relay, charging positive relay, and charging negative relay are all disconnected. If there is no level 3 serious fault, it checks whether the battery temperature is not less than N degrees (i.e., the second preset temperature threshold). If so, the normally open contacts of the heating positive relay, heating negative relay, charging positive relay, and charging negative relay are disconnected. If not, the battery continues to heat. When the battery charge is less than 100%, the system checks for a Level 3 serious fault. If a Level 3 serious fault exists, after a 10-second delay, the normally open contacts of the charging positive relay, charging negative relay, heating positive relay, and heating negative relay are all opened. If no Level 3 serious fault exists, the system checks if the battery temperature is less than M degrees Celsius. If the battery temperature is not less than M degrees Celsius, the battery is in charging mode (i.e., the charging control module connects the charging port to the battery, and the heating module disconnects from the charging port). The system then checks if the battery charge is 100%. If it is, the normally open contacts of the charging positive and charging negative relays are opened. If not, the system checks for a Level 3 serious fault. If the battery temperature is less than M degrees Celsius, the battery is in a simultaneous heating and charging mode (i.e., the charging control module connects the charging port to the battery, and the heating module connects to the charging port).

[0069] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0070] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A power conversion device, characterized in that, The power conversion device includes a DC-DC conversion module, a timed wake-up module, and a remote module; the input port of the DC-DC conversion module is connected to the charging port, and the output port of the DC-DC conversion module is connected to the power management module; the DC-DC conversion module is used to output a low DC voltage after DC-DC conversion to power the power management module. The timed wake-up module is connected to the power management module, and the timed wake-up module is used to wake up the power management module at a preset interval. The remote module connects the charging device and the power management module. The remote module is used to receive the power detection signal sent by the power management module and generate a charging control signal based on the received power detection signal, which is then sent to the charging device to control the power supply of the charging device. The charging device is connected to the charging port. The power detection signal includes the remaining power signal. When the remaining power signal is less than a preset threshold, the remote module generates a charging control signal based on the received power detection signal as a charging enable signal. The charging device supplies power according to the received charging control signal to charge the battery. When the remaining power signal is not less than a preset threshold, the remote module generates a charging control signal based on the received power detection signal as a stop charging signal. The charging device stops supplying power according to the received charging control signal, and the battery stops charging.

2. The power conversion device according to claim 1, characterized in that, The remote module includes a transmitting submodule, which is communicatively connected to the charging device and is used to transmit the charging control signal generated by the remote module to the charging device.

3. A power supply, characterized in that, The device includes a battery, a power management module, a charging control module, a discharging control module, and a power conversion device as described in any one of claims 1-2. The power management module is connected to the charging control module and the discharging control module, and controls the charging control module and the discharging control module to be turned on or off according to the power detection signal. The charging control module is connected to the charging port and the battery, and is used to disconnect or connect the charging port and the battery. The discharging control module is connected to the discharging port and the battery, and is used to disconnect or connect the battery and the discharging port.

4. The power supply according to claim 3, characterized in that, It also includes a heating module disposed on the surface of the battery, the heating module being used to heat the battery; the heating module is connected to the power management module and the charging port, and the heating module is used to heat the battery according to the power detection signal.

5. The power supply according to claim 4, characterized in that, The heating module includes a heating film, a first switch module, and a second switch module; one end of the heating film is connected to the first end of the first switch module, the other end of the heating film is connected to the first end of the second switch module, the second end of the first switch module is connected to the charging port, and the second end of the second switch module is connected to the charging port.

6. The power supply according to claim 5, characterized in that, The heating module also includes a heating fuse, one end of which is connected to the second end of the first switch module, and the other end of which is connected to the charging port.

7. The power supply according to claim 5, characterized in that, The first switching module includes a heating positive relay; one end of the normally open contact of the heating positive relay is connected to the first terminal of the first switching module, and the other end of the normally open contact of the heating positive relay is connected to the second terminal of the first switching module; the electromagnetic coil of the heating positive relay is connected to the power management module. The second switching module includes a heating negative relay; one end of the normally open contact of the heating negative relay is connected to the first terminal of the second switching module, and the other end of the normally open contact of the heating negative relay is connected to the second terminal of the second switching module; the electromagnetic coil of the heating negative relay is connected to the power management module.

8. The power supply according to claim 3, characterized in that, The charging control module includes a positive charging relay and a negative charging relay; one end of the normally open contact of the positive charging relay is connected to the positive terminal of the battery, the other end of the normally open contact of the positive charging relay is connected to the charging port, and the relay coil of the positive charging relay is connected to the power management module. One end of the normally open contact of the charging negative relay is connected to the negative terminal of the battery, and the other end of the normally open contact of the charging negative relay is connected to the charging port. The relay coil of the charging negative relay is connected to the power management module.

9. The power supply according to claim 3, characterized in that, The discharge control module includes a positive discharge relay and a negative discharge relay; one end of the normally open contact of the positive discharge relay is connected to the positive terminal of the battery, the other end of the normally open contact of the positive discharge relay is connected to the discharge port, and the relay coil of the positive discharge relay is connected to the power management module. One end of the normally open contact of the discharge negative relay is connected to the negative terminal of the battery, and the other end of the normally open contact of the discharge negative relay is connected to the discharge port. The relay coil of the discharge negative relay is connected to the power management module.

10. A vehicle, characterized in that, Includes the power supply as described in any one of claims 3-9.

11. A power supply preheating method, characterized in that, Performed by the power supply according to any one of claims 3-9, the method comprises: The charging port is connected to the charging device; The timed wake-up module wakes up the power management module at a preset interval. The power management module outputs the power detection signal to the remote module; The remote module generates a charging control signal based on the power detection signal and sends it to the charging device to control the power supply of the charging device; The power detection signal includes a temperature signal.

12. The power supply preheating method according to claim 11, characterized in that, The power detection signal includes a remaining power signal; the remote module generates a charging control signal based on the power detection signal and sends it to the charging device to control the power supply of the charging device, including: When the remaining power signal is less than a preset power threshold, the charging control module is controlled to connect the charging port to the battery; when the remaining power signal is greater than or equal to the preset power threshold, the charging control module is controlled to disconnect the charging port from the battery.

13. The power supply preheating method according to claim 11, characterized in that, The power detection signal includes a temperature signal; the power supply includes a heating module, which is disposed on the surface of the battery and is used to heat the battery. The heating module is connected to the power management module and the charging port. The remote module generates a charging control signal based on the power detection signal and sends it to the charging device to control the power supply of the charging device, including: When the temperature signal is less than a first preset temperature threshold, the heating module is connected to the charging port, and the heating module heats the battery. When the temperature signal is not less than the second preset temperature threshold, the heating module is disconnected from the charging port.

14. The power supply preheating method according to claim 11, characterized in that, After the timed wake-up module wakes up the power management module at a preset interval, the system further includes: Determine whether the battery has triggered a Level 3 critical fault; If a Level 3 critical fault is triggered, the charging control module will disconnect the charging port from the battery.

15. The power supply preheating method according to claim 13, characterized in that, After the timed wake-up module wakes up the power management module at a preset interval, the system further includes: Determine whether the battery has triggered a Level 3 serious fault. If a Level 3 serious fault is triggered, control the heating module to disconnect from the charging port.

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