A wake-up device and control method for a vehicle discharge device

Abstract

The application discloses a kind of awakening device and control method of vehicle discharge device, for vehicle end BMS awakening, the awakening end of vehicle end BMS is connected with A+ / A- power supply;Awakening device includes: super capacitor, switch, first, two diode, first, second DC / DC variable voltage module and first microprocessor;Vehicle discharge device includes above-mentioned awakening device, DC / DC isolation power supply, second microprocessor, internal auxiliary power supply, DC / AC inverter module;Awakening method includes: switch on time reaches first length, super capacitor provides enable signal to first DC / DC variable voltage module, and first DC / DC variable voltage module starts first microprocessor;Switch on time reaches second length, first microprocessor provides enable signal to first DC / DC variable voltage module, and maintains first DC / DC variable voltage module work;While providing enable signal to second DC / DC variable voltage module, and second DC / DC variable voltage module starts A+ / A- power supply, and A+ / A- power supply starts and awakens vehicle end BMS;The application has the advantages of low cost, low power consumption and good stability.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle technology, and in particular to a wake-up device and control method for a vehicle discharge device. Background Technology

[0002] With the development of new energy vehicle technology, new energy vehicles have undergone several rounds of market upgrades. New energy vehicles without discharge function are equipped with a discharge device. Because relevant DC charging protocols require the discharge device to have a wake-up function, it needs to output 12V DC power to power the A+A- power supply to wake up the vehicle-side BMS, so that the in-vehicle contactor closes, thereby releasing DC high voltage from the vehicle battery pack to provide voltage input for the discharge device.

[0003] The existing solution for the discharge device uses a rechargeable lithium-ion battery (9-14V) as the energy storage capacitor. Under normal standby conditions, the lithium-ion battery still needs to supply power to the internal MCU. Long-term standby power consumption can easily lead to low lithium-ion battery charge, affecting the use of the discharge device. At the same time, lithium-ion batteries are expensive and their electrical performance is unstable in high-temperature environments, posing certain safety hazards. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wake-up device and control method for a vehicle discharge device, thereby solving the technical problems of high cost and poor stability of the discharge devices provided by the existing solutions.

[0005] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0006] In a first aspect, the present invention provides a wake-up device for waking up a vehicle-mounted BMS, wherein the wake-up terminal of the vehicle-mounted BMS is connected to an A+ / A- power supply; the wake-up device includes: a supercapacitor, a switch, a first diode, a second diode, a first DC / DC transformer module, a second DC / DC transformer module, and a first microprocessor; the output terminal of the supercapacitor is respectively connected to one end of the switch, the input terminal of the first DC / DC transformer module, and the input terminal of the second DC / DC transformer module; the other end of the switch is respectively connected to the signal terminal of the first microprocessor and the positive terminal of the first diode; the negative terminal of the first diode is connected to the enable terminal of the first DC / DC transformer module and the negative terminal of the second diode, and the positive terminal of the second diode is connected to the first control terminal of the first microprocessor; the second control terminal of the first microprocessor is connected to the enable terminal of the second DC / DC transformer module, and the output terminal of the second DC / DC transformer module is connected to the input terminal of the A+ / A- power supply; the output terminal of the first DC / DC transformer module is connected to the power supply terminal of the first microprocessor.

[0007] Optionally, the supercapacitor is a 3.2-4.2V supercapacitor.

[0008] Optionally, the first DC / DC transformer module includes a 4.2V to 5V DC / DC boost chip and a 5V to 3V DC / DC boost chip, and the first microprocessor is an MCU chip; the enable terminal, input terminal, and output terminal of the 4.2V to 5V DC / DC boost chip are respectively connected to the negative terminal of the first diode, the output terminal of the 3.2-4.2V supercapacitor, and the input terminal of the 5V to 3V DC / DC boost chip; the output terminal of the 5V to 3V DC / DC boost chip is connected to the power supply terminal of the MCU chip.

[0009] Optionally, the second DC / DC transformer module is a 4.2V to 12V DC / DC boost chip.

[0010] Secondly, the present invention provides a vehicle discharge device, which includes a DC / DC isolated power supply, a second microprocessor, an internal auxiliary power supply, a DC / AC inverter module, and the aforementioned wake-up device; the input and output terminals of the DC / DC isolated power supply are respectively connected to the output terminal of the second DC / DC transformer module and the power supply terminal of the second microprocessor; the signal terminal of the second microprocessor is connected to the signal terminal of the vehicle-side BMS; the first and second control terminals of the second microprocessor are respectively connected to the control terminals of the internal auxiliary power supply and the DC / AC inverter module; the output terminal of the internal auxiliary power supply is connected to the input terminal of a supercapacitor through a charging management chip; and the input terminals of the internal auxiliary power supply and the DC / AC inverter module are externally connected to the vehicle battery pack.

[0011] Optionally, the DC / DC isolated power supply is a 12V to 12V DC / DC isolated power supply, and the second microprocessor is a DSP chip.

[0012] Thirdly, the present invention provides a control method for a vehicle discharge device, wherein the control method using the above-mentioned vehicle discharge device includes:

[0013] In response to the switch being on for a preset first duration, the supercapacitor provides an enable signal to the first DC / DC transformer module through the first diode, the first DC / DC transformer module starts up and supplies power to the first microprocessor, and the first microprocessor starts up.

[0014] In response to the switch being on for a preset second duration, the first microprocessor provides an enable signal to the first DC / DC transformer module via the second diode to maintain the operation of the first DC / DC transformer module; at the same time, it provides an enable signal to the second DC / DC transformer module, which starts up and supplies power to the A+ / A- power supply and the DC / DC isolated power supply. The A+ / A- power supply starts up and wakes up the vehicle-side BMS, the DC / DC isolated power supply starts up and supplies power to the second microprocessor, and the second microprocessor starts up.

[0015] In response to the information exchange between the vehicle-side BMS and the second microprocessor, the second microprocessor controls the internal auxiliary power supply or DC / AC inverter module to output electrical energy, and the internal auxiliary power supply charges the supercapacitor through the charging management chip.

[0016] In response to the switch being turned on again and the on-time reaching a preset third duration, the first microprocessor stops providing enable signals to the first DC / DC transformer module and the second DC / DC transformer module, the first DC / DC transformer module and the second DC / DC transformer module stop working, and the vehicle discharge device enters a sleep state.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0018] This invention provides a wake-up device and control method for an automotive discharge device. After the first microprocessor is started, the wake-up device enables the first and second DC / DC transformer modules via the first microprocessor, ensuring continued operation even after the switch is turned off, thus guaranteeing the wake-up of the vehicle-side BMS. The control method allows the automotive discharge device to output power normally and charge the supercapacitor after the vehicle-side BMS is woken up. After the automotive discharge device stops working, the supercapacitor enters a standby state, achieving minimum standby power consumption to prevent depletion and ensure continued use. Furthermore, compared to traditional lithium-ion batteries, the supercapacitor is lower in cost, adaptable to high-temperature environments, and exhibits better stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the wake-up device provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the vehicle discharge device provided in an embodiment of the present invention. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] Example 1:

[0023] like Figure 1 As shown in the figure, an embodiment of the present invention provides a wake-up device for waking up a vehicle-side BMS. The wake-up terminal of the vehicle-side BMS is connected to an A+ / A- power supply. The wake-up device includes: a supercapacitor, a switch, a first diode, a second diode, a first DC / DC transformer module, a second DC / DC transformer module, and a first microprocessor. The output terminal of the supercapacitor is connected to one end of the switch, the input terminal of the first DC / DC transformer module, and the input terminal of the second DC / DC transformer module, respectively. The other end of the switch is connected to the signal terminal of the first microprocessor and the positive terminal of the first diode, respectively. The negative terminal of the first diode is connected to the enable terminal of the first DC / DC transformer module and the negative terminal of the second diode, and the positive terminal of the second diode is connected to the first control terminal of the first microprocessor. The second control terminal of the first microprocessor is connected to the enable terminal of the second DC / DC transformer module, and the output terminal of the second DC / DC transformer module is connected to the input terminal of the A+ / A- power supply. The output terminal of the first DC / DC transformer module is connected to the power supply terminal of the first microprocessor.

[0024] Specifically, in this embodiment, the supercapacitor is a 3.2-4.2V supercapacitor; the first DC / DC transformer module includes a 4.2V to 5V DC / DC boost chip and a 5V to 3V DC / DC boost chip, and the first microprocessor is an MCU chip; the enable terminal, input terminal, and output terminal of the 4.2V to 5V DC / DC boost chip are respectively connected to the negative terminal of the first diode, the output terminal of the 3.2-4.2V supercapacitor, and the input terminal of the 5V to 3V DC / DC boost chip; the output terminal of the 5V to 3V DC / DC boost chip is connected to the power supply terminal of the MCU chip; the second DC / DC transformer module is a 4.2V to 12V DC / DC boost chip. In other optional embodiments, the component models can be adjusted as needed.

[0025] The wake-up method for the wake-up device provided in this embodiment includes:

[0026] 1. In response to the switch being turned on for a preset first duration (i.e., the switch is pressed and held for a period of time, usually set to 300ms), the supercapacitor provides an enable signal to the first DC / DC transformer module through the first diode, the first DC / DC transformer module starts up and supplies power to the first microprocessor, and the first microprocessor starts up.

[0027] 2. In response to the switch being pressed for a preset second duration (i.e., the switch remains pressed for a certain period of time after being held down, typically set to 200ms), the first microprocessor provides an enable signal to the first DC / DC transformer module via the second diode, maintaining the operation of the first DC / DC transformer module; simultaneously, it provides an enable signal to the second DC / DC transformer module, which starts up and supplies power to the A+ / A- power supply. The A+ / A- power supply then starts up and wakes up the vehicle-side BMS. Once the vehicle-side BMS is woken up, the switch can be disconnected. The entire user operation logic involves pressing the switch and holding it for 500ms, which aligns with user operating habits.

[0028] Example 2:

[0029] like Figure 2 As shown in the figure, an embodiment of the present invention provides a vehicle discharge device, which includes a DC / DC isolated power supply, a second microprocessor, an internal auxiliary power supply, a DC / AC inverter module, and a wake-up device as provided in Embodiment 1. The input and output terminals of the DC / DC isolated power supply are respectively connected to the output terminal of the second DC / DC transformer module and the power supply terminal of the second microprocessor. The signal terminal of the second microprocessor is connected to the signal terminal of the vehicle-side BMS. The first and second control terminals of the second microprocessor are respectively connected to the control terminals of the internal auxiliary power supply and the DC / AC inverter module. The output terminal of the internal auxiliary power supply is connected to the input terminal of the supercapacitor through a charging management chip. The input terminals of the internal auxiliary power supply and the DC / AC inverter module are externally connected to the vehicle battery pack.

[0030] Specifically, in this embodiment, the DC / DC isolated power supply is a 12V to 12V DC / DC isolated power supply, and the second microprocessor is a DSP chip. In other optional embodiments, the component models can be adjusted as needed.

[0031] The control method for the vehicle discharge device provided in this embodiment includes:

[0032] 1. In response to the switch being turned on for a preset first duration (i.e., the switch is pressed and held for a period of time, usually set to 300ms), the supercapacitor provides an enable signal to the first DC / DC transformer module through the first diode, the first DC / DC transformer module starts up and supplies power to the first microprocessor, and the first microprocessor starts up.

[0033] 2. In response to the switch being pressed for a preset second duration (i.e., the switch is held for a certain duration after being pressed and held for a period of time, usually set to 200ms), the first microprocessor provides an enable signal to the first DC / DC transformer module through the second diode, maintaining the operation of the first DC / DC transformer module; at the same time, it provides an enable signal to the second DC / DC transformer module, which starts up and supplies power to the A+ / A- power supply and the DC / DC isolation power supply. The A+ / A- power supply starts up and wakes up the vehicle-side BMS, and the DC / DC isolation power supply starts up and supplies power to the second microprocessor, which then starts up. After the vehicle-side BMS is woken up, the switch can be disconnected. The entire user operation logic is to press the switch and hold it for 500ms, which conforms to the user's operating habits.

[0034] 3. In response to the information exchange between the vehicle-side BMS and the second microprocessor, the second microprocessor controls the internal auxiliary power supply or DC / AC inverter module to output electrical energy, and the internal auxiliary power supply charges the supercapacitor through the charging management chip.

[0035] 4. In response to the switch being turned on again and the on-time reaching a preset third duration (i.e., the switch being pressed again and maintained for a certain period of time, typically set to 3 seconds), the first microprocessor stops providing enable signals to the first and second DC / DC transformer modules. The first and second DC / DC transformer modules stop working, and the vehicle discharge device enters a sleep state. At this time, the supercapacitor is in standby mode and does not provide power, achieving the minimum standby power consumption.

[0036] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0037] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1A device that provides the functions specified in one or more boxes.

[0038] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0039] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A wake-up device for waking up a vehicle-mounted BMS, wherein the wake-up terminal of the vehicle-mounted BMS is connected to an A+ / A- power supply; characterized in that, The wake-up device includes: a supercapacitor, a switch, a first diode, a second diode, a first DC / DC transformer module, a second DC / DC transformer module, and a first microprocessor; the output terminal of the supercapacitor is connected to one end of the switch, the input terminal of the first DC / DC transformer module, and the input terminal of the second DC / DC transformer module, respectively; the other end of the switch is connected to the signal terminal of the first microprocessor and the positive terminal of the first diode, respectively; the negative terminal of the first diode is connected to the enable terminal of the first DC / DC transformer module and the negative terminal of the second diode, and the positive terminal of the second diode is connected to the first control terminal of the first microprocessor; the second control terminal of the first microprocessor is connected to the enable terminal of the second DC / DC transformer module, and the output terminal of the second DC / DC transformer module is connected to the input terminal of an A+ / A- power supply; the output terminal of the first DC / DC transformer module is connected to the power supply terminal of the first microprocessor.

2. The wake-up device according to claim 1, characterized in that, The supercapacitor is a 3.2-4.2V supercapacitor.

3. The wake-up device according to claim 2, characterized in that, The first DC / DC transformer module includes a 4.2V to 5V DC / DC boost chip and a 5V to 3V DC / DC boost chip, and the first microprocessor is an MCU chip; the enable terminal, input terminal, and output terminal of the 4.2V to 5V DC / DC boost chip are respectively connected to the negative terminal of the first diode, the output terminal of the 3.2-4.2V supercapacitor, and the input terminal of the 5V to 3V DC / DC boost chip; the output terminal of the 5V to 3V DC / DC boost chip is connected to the power supply terminal of the MCU chip.

4. The wake-up device according to claim 2, characterized in that, The second DC / DC transformer module is a 4.2V to 12V DC / DC boost chip.

5. A vehicle discharge device, characterized in that, The vehicle discharge device includes a DC / DC isolated power supply, a second microprocessor, an internal auxiliary power supply, a DC / AC inverter module, and a wake-up device as described in claim 1; the input and output terminals of the DC / DC isolated power supply are respectively connected to the output terminal of the second DC / DC transformer module and the power supply terminal of the second microprocessor, the signal terminal of the second microprocessor is connected to the signal terminal of the vehicle-side BMS, and the first and second control terminals of the second microprocessor are respectively connected to the control terminals of the internal auxiliary power supply and the DC / AC inverter module; the output terminal of the internal auxiliary power supply is connected to the input terminal of the supercapacitor through a charging management chip, and the input terminals of the internal auxiliary power supply and the DC / AC inverter module are externally connected to the vehicle battery pack.

6. The vehicle discharge device according to claim 5, characterized in that, The DC / DC isolated power supply is a 12V to 12V DC / DC isolated power supply, and the second microprocessor is a DSP chip.

7. A control method for a vehicle discharge device, characterized in that, The control method using the vehicle discharge device as described in claim 5 includes: In response to the switch being on for a preset first duration, the supercapacitor provides an enable signal to the first DC / DC transformer module through the first diode, the first DC / DC transformer module starts up and supplies power to the first microprocessor, and the first microprocessor starts up. In response to the switch being on for a preset second duration, the first microprocessor provides an enable signal to the first DC / DC transformer module via the second diode to maintain the operation of the first DC / DC transformer module; at the same time, it provides an enable signal to the second DC / DC transformer module, which starts up and supplies power to the A+ / A- power supply and the DC / DC isolated power supply. The A+ / A- power supply starts up and wakes up the vehicle-side BMS, the DC / DC isolated power supply starts up and supplies power to the second microprocessor, and the second microprocessor starts up. In response to the information exchange between the vehicle-side BMS and the second microprocessor, the second microprocessor controls the internal auxiliary power supply or DC / AC inverter module to output electrical energy, and the internal auxiliary power supply charges the supercapacitor through the charging management chip. In response to the switch being turned on again and the on-time reaching a preset third duration, the first microprocessor stops providing enable signals to the first DC / DC transformer module and the second DC / DC transformer module, the first DC / DC transformer module and the second DC / DC transformer module stop working, and the vehicle discharge device enters a sleep state.

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