Intelligent charging method and device for vehicle storage battery, vehicle control unit and vehicle

Abstract

The invention relates to the technical field of vehicles, and provides an intelligent charging method and device for a vehicle storage battery, a vehicle controller and a vehicle, and the method comprises the steps: obtaining an intelligent charging request signal under the condition that a vehicle is in an OFF gear and receives a level signal sent by a vehicle-mounted electrical component T-BOX; and based on the intelligent power supply request signal, a main drive power-on instruction is sent to a power distribution unit PDU, and the main drive power-on instruction is used for indicating the PDU to control a main positive relay to be closed so as to control an energy storage converter DCDC to supply power to a storage battery. According to the technical scheme, under the condition that the level signal sent by the vehicle-mounted electric appliance element T-BOX is received, the intelligent electricity supplementing request signal is obtained, electricity supplementing is conducted on the storage battery in the mode of sending the level signal on the basis of hardware connection without depending on the network environment, and the application range is wide.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to an intelligent charging method and device for a vehicle battery, a vehicle controller and a vehicle. Background Art

[0002] Many car users have some bad car-using habits, such as parking for too long, forgetting to lock the car when leaving, and forgetting to turn off the lights on the car, which may cause the battery to be fed back. If the battery is fed back multiple times and cannot be effectively relieved, the service life will be shortened. Therefore, how to effectively prevent battery feeding has become a hot topic for discussion in the automotive industry.

[0003] In the prior art, the charging logic of vehicle batteries is very complex, involves many nodes, and is highly dependent on the network environment. In the case of a poor network environment, it is not easy to charge the vehicle batteries. Summary of the invention

[0004] The present invention provides an intelligent charging method and device for a vehicle battery, a vehicle controller and a vehicle, so as to solve the defect that the charging in the prior art depends on the network environment and it is difficult to charge the vehicle battery when the network environment is poor. The present invention does not depend on the network environment and charges the battery by sending a level signal, so it has a wide range of applications.

[0005] The present invention provides an intelligent charging method for a vehicle battery, comprising the following steps.

[0006] When the vehicle is in the OFF position and receives a level signal sent by the vehicle electrical component T-BOX, an intelligent power replenishment request signal is obtained; Based on the intelligent power replenishment request signal, a main drive power-on instruction is sent to a power distribution unit PDU, and the main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to replenish power to the battery.

[0007] According to an intelligent charging method for a vehicle battery provided by the present invention, the method of sending a main drive power-on instruction to a power distribution unit PDU based on the intelligent charging request signal comprises: The intelligent power supplement request signal is sent to the PDU; the intelligent power supplement request signal is used to instruct the PDU to determine the first fault state of the main positive relay; Receiving the first fault status sent by the PDU; Based on the first fault state, the main drive power-on instruction is sent to the PDU.

[0008] According to an intelligent charging method for a vehicle battery provided by the present invention, the sending of the main drive power-on instruction to the PDU based on the first fault state includes: Receiving a second fault state corresponding to the battery management system BMS; When both the first fault state and the second fault state are without power-on fault, a main negative relay pickup instruction is sent to the BMS; the main negative relay pickup instruction is used to instruct the BMS to control the main negative relay pickup state based on the connection state of the charging gun; Receiving a first pull-in state signal corresponding to the main negative relay sent by the BMS; Based on the first pull-in state signal, the main drive power-on instruction is sent to the PDU.

[0009] According to an intelligent charging method for a vehicle battery provided by the present invention, the sending of the main drive power-on instruction to the PDU based on the first pull-in state signal includes: When the first energizing state signal indicates that the main negative relay is energized, an auxiliary relay energizing instruction is sent to the PDU; the auxiliary relay energizing instruction is used to instruct the PDU to control the auxiliary relay to energize; Receiving a second pull-in state signal corresponding to the auxiliary relay sent by the PDU; Based on the second pull-in state signal, the main drive power-on instruction is sent to the PDU.

[0010] According to an intelligent charging method for a vehicle battery provided by the present invention, the sending of the main drive power-on instruction to the PDU based on the second pull-in state signal includes: When the second energizing state signal indicates that the auxiliary relay is energized, an enabling instruction is sent to the DCDC; the enabling instruction is used to instruct the DCDC to perform a self-check to obtain a working state of the DCDC; Receive a third fault state sent by a motor controller MCU, where the third fault state is determined by the MCU based on the DCDC working state, and the third fault state includes the MCU fault state and the transmission control unit TCU fault state; Based on the third fault state, the main drive power-on instruction is sent to the PDU.

[0011] According to a vehicle battery intelligent charging method provided by the present invention, based on the third fault state, sending the main drive power-on instruction to the PDU includes: When the third fault state is no power-on fault, the main drive power-on instruction is sent to the PDU.

[0012] According to a method for intelligently charging a vehicle battery provided by the present invention, the method further comprises: When receiving the battery charging status sent by the T-BOX that the charging status is charging failure, a main negative relay forced closure instruction is sent to the battery management system BMS; the main negative relay forced closure instruction is used to instruct the BMS to control the main negative relay to be forcedly closure.

[0013] The present invention also provides an intelligent charging device for a vehicle battery, comprising the following modules: The acquisition module is used to obtain the intelligent power replenishment request signal when the vehicle is in the OFF gear and receives the level signal sent by the vehicle-mounted electrical component T-BOX; The sending module is used to send a main drive power-on instruction to the power distribution unit PDU based on the intelligent power replenishment request signal, and the main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to replenish power to the battery.

[0014] The present invention also provides a vehicle controller, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, an intelligent charging method for a vehicle battery as described above is implemented.

[0015] The present invention also provides a vehicle, comprising the vehicle controller as described above.

[0016] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the intelligent charging method for a vehicle battery as described in any one of the above is implemented.

[0017] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the intelligent charging method for a vehicle battery as described above is implemented.

[0018] The intelligent charging method, device, vehicle controller and vehicle for the vehicle battery provided by the present invention obtain an intelligent charging request signal when the vehicle is in the OFF gear and receives a level signal sent by the on-board electrical component T-BOX, and then sends a main drive power-on instruction to the power distribution unit PDU based on the intelligent charging request signal. The main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to charge the battery. In the technical solution of the present invention, when the level signal sent by the on-board electrical component T-BOX is received, the intelligent charging request signal is obtained, which does not rely on the network environment, but is based on the hardware connection, and the battery is charged by sending a level signal, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is one of the flow charts of the intelligent charging method for a vehicle battery provided by the present invention.

[0021] Figure 2 This is the second flow chart of the intelligent charging method for vehicle batteries provided by the present invention.

[0022] Figure 3 It is a structural schematic diagram of the intelligent charging device for vehicle batteries provided by the present invention.

[0023] Figure 4 It is a structural schematic diagram of the vehicle controller provided by the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In view of the above problems in the prior art, the present invention provides an intelligent charging method for a vehicle battery. It is easy to understand that the execution subject of the method of the present invention can be a vehicle control unit (VCU) of the vehicle. Figure 1 This is one of the flow charts of the intelligent charging method for vehicle batteries provided by the present invention, such as Figure 1 As shown, the method includes the following: Step 110: When the vehicle is in the OFF gear and receives a level signal sent by the vehicle-mounted electrical component T-BOX, an intelligent power replenishment request signal is obtained.

[0026] Specifically, when the vehicle is in the OFF gear, the timer wake-up unit in the vehicle electrical component (Telematics BOX, T-BOX) can send a level signal to the VCU at a preset time interval, and the level signal can be, for example, a 4-volt level signal. In addition, the T-BOX will also send an intelligent power replenishment request signal to the VCU. When the VCU receives the level signal sent by the T-BOX, the VCU can receive the intelligent power replenishment request signal sent by the T-BOX, and the intelligent power replenishment request signal can be a CAN signal.

[0027] Step 120: Based on the intelligent power replenishment request signal, a main drive power-on instruction is sent to a power distribution unit PDU, wherein the main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to replenish power to the battery.

[0028] Specifically, the VCU can send a main drive power-on instruction to the power distribution unit (PDU) based on the intelligent power-on request signal. The PDU can receive the main drive power-on instruction sent by the VCU, and can control the main positive relay to be attracted based on the main drive power-on instruction. When the main positive relay is attracted, the energy storage converter (Direct Current to Direct Current Converter, DCDC) will replenish power to the battery.

[0029] In one embodiment, the sending of a main drive power-on instruction to a power distribution unit PDU based on the intelligent power supplement request signal includes: The intelligent power supplement request signal is sent to the PDU; the intelligent power supplement request signal is used to instruct the PDU to determine the first fault state of the main positive relay; Receiving the first fault status sent by the PDU; Based on the first fault state, the main drive power-on instruction is sent to the PDU.

[0030] Specifically, Figure 2 As shown, after receiving the intelligent power replenishment request signal, the VCU can also send the intelligent power replenishment request signal to the PDU. The PDU can receive the intelligent power replenishment request signal sent by the VCU. After the PDU receives the intelligent power replenishment request signal, the PDU can determine the first fault state of the main positive relay, which can be a CAN signal. And the PDU can also send the first fault state to the VCU.

[0031] Furthermore, the VCU may receive the first fault state sent by the PDU, and then the VCU may send a main drive power-on instruction to the PDU based on the first fault state.

[0032] In the above embodiment, the intelligent power replenishment request signal is sent to the PDU, which instructs the PDU to determine the first fault state of the main positive relay and sends a main drive power-on instruction to the PDU based on the information fed back by the PDU to replenish the battery.

[0033] In one embodiment, the sending the main drive power-on instruction to the PDU based on the first fault state includes: Receiving a second fault state corresponding to the battery management system BMS; When both the first fault state and the second fault state are without power-on fault, a main negative relay pickup instruction is sent to the BMS; the main negative relay pickup instruction is used to instruct the BMS to control the main negative relay pickup state based on the connection state of the charging gun; Receiving a first pull-in state signal corresponding to the main negative relay sent by the BMS; Based on the first pull-in state signal, the main drive power-on instruction is sent to the PDU.

[0034] Specifically, Figure 2 As shown, the battery management system (BMS) can send its own corresponding second fault state to the VCU, and the VCU can receive the second fault state corresponding to the battery management system BMS, which represents the fault state of the battery management system BMS itself. When there is no power-on fault in the first fault state and the second fault state, the VCU can send a main negative relay closure instruction to the BMS. After receiving the main negative relay closure instruction, the BMS can control the main negative relay closure state based on the connection state of the charging gun. That is, the BMS can control the main negative relay to be closure when the charging gun is not connected. The BMS can also control the main negative relay not to be closure when the charging gun is connected.

[0035] Furthermore, after controlling the main negative relay to be energized or controlling the main negative relay not to be energized, the BMS can also send the energization state of the main negative relay to the VCU through a first energization state signal, and the first energization state signal can be a CAN signal. The VCU can receive the first energization state signal sent by the BMS, and can further send a main drive power-on instruction to the PDU based on the first energization state signal.

[0036] In the above embodiment, when there is no power-on fault in both the first fault state and the second fault state, a main negative relay closure instruction is sent to the BMS, that is, when the VCU determines that there is no power-on fault in both the main positive relay and the BMS, it can instruct the BMS to control the main negative relay to be energized or not according to the connection status of the charging gun by issuing a main negative relay closure instruction, and further send a main drive power-on instruction to the PDU according to the first closure state signal corresponding to the main negative relay to replenish the battery.

[0037] In one embodiment, the sending the main drive power-on instruction to the PDU based on the first pull-in state signal includes: When the first energizing state signal indicates that the main negative relay is energized, an auxiliary relay energizing instruction is sent to the PDU; the auxiliary relay energizing instruction is used to instruct the PDU to control the auxiliary relay to energize; Receiving a second pull-in state signal corresponding to the auxiliary relay sent by the PDU; Based on the second pull-in state signal, the main drive power-on instruction is sent to the PDU.

[0038] Specifically, Figure 2 As shown, the VCU can receive the first pull-in state signal sent by the BMS. When the first pull-in state signal indicates that the main negative relay is pulled in, the VCU can send an auxiliary relay pull-in instruction to the PDU. The PDU can receive the auxiliary relay pull-in command sent by the VCU, and can control the auxiliary relay to be pulled in according to the auxiliary relay pull-in command. The auxiliary relay pull-in command can be a CAN signal.

[0039] Furthermore, the PDU may also send a second pull-in state signal corresponding to the auxiliary relay to the VCU according to the pull-in state of the auxiliary relay. The VCU may receive the second pull-in state signal corresponding to the auxiliary relay sent by the PDU, and may further send a main drive power-on instruction to the PDU based on the second pull-in state signal. The second pull-in state signal may be a CAN signal.

[0040] In the above embodiment, when the first energizing state signal indicates that the main negative relay is energized, an auxiliary relay energizing command is sent to the PDU to make the auxiliary relay energize, and then according to the second energizing state signal corresponding to the auxiliary relay, a main drive power-on command is sent to the PDU to replenish the battery.

[0041] In one embodiment, the sending the main drive power-on instruction to the PDU based on the second pull-in state signal includes: When the second energizing state signal indicates that the auxiliary relay is energized, an enabling instruction is sent to the DCDC; the enabling instruction is used to instruct the DCDC to perform a self-check to obtain a working state of the DCDC; Receive a third fault state sent by a motor controller MCU, where the third fault state is determined by the MCU based on the DCDC working state, and the third fault state includes the MCU fault state and the transmission control unit TCU fault state; Based on the third fault state, the main drive power-on instruction is sent to the PDU.

[0042] Specifically, Figure 2 As shown, the VCU can receive the second pull-in state signal corresponding to the auxiliary relay sent by the PDU. When the second pull-in state signal indicates that the auxiliary relay is pulled in, the VCU can send an enable instruction to the DCDC. After receiving the enable instruction sent by the VCU, the DCDC can perform a self-test and send the DCDC working state obtained by the self-test to the motor controller (Motor Control Unit, MCU). The MCU can receive the DCDC working state sent by the DCDC. When the received DCDC working state is normal, the MCU can self-test to determine the MCU fault state and determine the transmission control unit (Transmission Control Unit, TCU) fault state. Further, the MCU can send a third fault state to the VCU. The VCU can receive the third fault state sent by the MCU, and then send a main drive power-on instruction to the PDU based on the third fault state. Among them, the enable instruction, the DCDC working state and the third fault state can all be CAN signals.

[0043] In the above embodiment, when the auxiliary relay is energized, the DCDC self-check is controlled, and then when the DCDC working state is normal, the third fault state sent by the MCU can be received, and further based on the third fault state, the main drive power-on instruction is sent to the PDU to recharge the battery.

[0044] In one embodiment, the sending the main drive power-on instruction to the PDU based on the third fault state includes: When the third fault state is no power-on fault, the main drive power-on instruction is sent to the PDU.

[0045] Specifically, the VCU may receive the third fault state sent by the MCU. When the third fault state is no power-on fault, the VCU may send a main drive power-on instruction to the PDU.

[0046] In the above embodiment, when the third fault state is no power-on fault, a main drive power-on instruction is sent to the PDU, ensuring that the battery can be normally charged.

[0047] The intelligent charging method for a vehicle battery provided by the present invention obtains an intelligent charging request signal when the vehicle is in the OFF gear and receives a level signal sent by the on-board electrical component T-BOX, and then sends a main drive power-on instruction to the power distribution unit PDU based on the intelligent charging request signal. The main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to charge the battery. In the technical solution of the present invention, when the level signal sent by the on-board electrical component T-BOX is received, the intelligent charging request signal is obtained, which does not rely on the network environment, but is based on the hardware connection, and the battery is charged by sending a level signal, and has a wide range of applications.

[0048] In one embodiment, the method further comprises: When receiving the battery charging status sent by the T-BOX that the charging status is charging failure, a main negative relay forced closure instruction is sent to the battery management system BMS; the main negative relay forced closure instruction is used to instruct the BMS to control the main negative relay to be forcedly closure.

[0049] Specifically, when receiving the battery charging status sent by T-BOX as charging failure, the VCU can receive a new intelligent charging request signal and can also send the new intelligent charging request signal to the PDU. The PDU can receive the new intelligent charging request signal sent by the VCU. After the PDU receives the new intelligent charging request signal, the PDU can determine the new first fault state of the main positive relay. And the PDU can also send the new first fault state to the VCU, and the VCU can receive the new second fault state corresponding to the battery management system BMS. When both the new first fault state and the new second fault state are without power-on failure, the VCU can send a main negative relay forced closure instruction to the BMS. After receiving the main negative relay forced closure instruction, the BMS no longer determines the connection status of the charging gun, but directly controls the main negative relay to be forced to be closure. It is easy to understand that the charging process after the main negative relay is closure is as in the aforementioned embodiment, and this embodiment will not be repeated.

[0050] In the above embodiment, when the battery charging status sent by T-BOX is charging failure, a main negative relay forced energization instruction is sent to the battery management system BMS, and the main negative relay forced energization instruction is used to instruct the BMS to control the main negative relay to be forced to be energized. In the use scenario of scheduled charging, the charging gun may be continuously connected but not charged, so the battery may still be fed. In order to ensure that the battery is charged in this scenario, this embodiment can send a main negative relay forced energization instruction to the BMS to force the main negative relay to be energized.

[0051] The intelligent charging device for a vehicle battery provided by the present invention is described below. The intelligent charging device for a vehicle battery described below and the intelligent charging method for a vehicle battery described above can be referred to each other.

[0052] Figure 3 Schematic diagram of the structure of the intelligent charging device for vehicle batteries provided by the present invention. Figure 3 As shown, the intelligent charging device 300 for the vehicle battery includes: The acquisition module 310 is used to acquire the intelligent power replenishment request signal when the vehicle is in the OFF gear and receives the level signal sent by the vehicle-mounted electrical component T-BOX; The sending module 320 is used to send a main drive power-on instruction to the power distribution unit PDU based on the intelligent power replenishment request signal, and the main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized to control the energy storage converter DCDC to replenish power to the battery.

[0053] In one embodiment, the sending module 320 is specifically used for: The intelligent power supplement request signal is sent to the PDU; the intelligent power supplement request signal is used to instruct the PDU to determine the first fault state of the main positive relay; Receiving the first fault status sent by the PDU; Based on the first fault state, the main drive power-on instruction is sent to the PDU.

[0054] In one embodiment, the sending module 320 is further configured to: Receiving a second fault state corresponding to the battery management system BMS; When both the first fault state and the second fault state are without power-on fault, a main negative relay pickup instruction is sent to the BMS; the main negative relay pickup instruction is used to instruct the BMS to control the main negative relay pickup state based on the connection state of the charging gun; Receiving a first pull-in state signal corresponding to the main negative relay sent by the BMS; Based on the first pull-in state signal, the main drive power-on instruction is sent to the PDU.

[0055] In one embodiment, the sending module 320 is further configured to: When the first energizing state signal indicates that the main negative relay is energized, an auxiliary relay energizing instruction is sent to the PDU; the auxiliary relay energizing instruction is used to instruct the PDU to control the auxiliary relay to energize; Receiving a second pull-in state signal corresponding to the auxiliary relay sent by the PDU; Based on the second pull-in state signal, the main drive power-on instruction is sent to the PDU.

[0056] In one embodiment, the sending module 320 is further configured to: When the second energizing state signal indicates that the auxiliary relay is energized, an enabling instruction is sent to the DCDC; the enabling instruction is used to instruct the DCDC to perform a self-check to obtain a working state of the DCDC; Receive a third fault state sent by a motor controller MCU, where the third fault state is determined by the MCU based on the DCDC working state, and the third fault state includes the MCU fault state and the transmission control unit TCU fault state; Based on the third fault state, the main drive power-on instruction is sent to the PDU.

[0057] In one embodiment, the sending module 320 is further configured to: When the third fault state is no power-on fault, the main drive power-on instruction is sent to the PDU.

[0058] In one embodiment, the intelligent charging device for the vehicle battery further includes a forced suction module, which is specifically used for: When receiving the battery charging status sent by the T-BOX that the charging status is charging failure, a main negative relay forced closure instruction is sent to the battery management system BMS; the main negative relay forced closure instruction is used to instruct the BMS to control the main negative relay to be forcedly closure.

[0059] The intelligent charging device for the vehicle battery provided by the present invention obtains an intelligent charging request signal when the whole vehicle is in the OFF gear and receives a level signal sent by the on-board electrical component T-BOX, and then sends a main drive power-on instruction to the power distribution unit PDU based on the intelligent charging request signal. The main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to charge the battery. In the technical solution of the present invention, when the level signal sent by the on-board electrical component T-BOX is received, the intelligent charging request signal is obtained, which does not rely on the network environment, but is based on the hardware connection, and the battery is charged by sending a level signal, and has a wide range of applications.

[0060] Figure 4 An example of a physical structure diagram of a vehicle controller is shown below. Figure 4 As shown, the vehicle controller may include: a processor 410, a communications interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communications interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the intelligent charging method for the vehicle battery, which includes: When the vehicle is in the OFF position and receives a level signal sent by the vehicle electrical component T-BOX, an intelligent power replenishment request signal is obtained; Based on the intelligent power replenishment request signal, a main drive power-on instruction is sent to a power distribution unit PDU, and the main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to replenish power to the battery.

[0061] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of 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 invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0062] On the other hand, the present invention further provides a vehicle, comprising the vehicle controller as described above.

[0063] On the other hand, the present invention further provides a computer program product, the computer program product includes a computer program, the computer program can be stored in a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the intelligent charging method of the vehicle battery provided by the above methods, the method includes: When the vehicle is in the OFF position and receives a level signal sent by the vehicle electrical component T-BOX, an intelligent power replenishment request signal is obtained; Based on the intelligent power replenishment request signal, a main drive power-on instruction is sent to a power distribution unit PDU, and the main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to replenish power to the battery.

[0064] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to execute the intelligent charging method for a vehicle battery provided by the above methods, the method comprising: When the vehicle is in the OFF position and receives a level signal sent by the vehicle electrical component T-BOX, an intelligent power replenishment request signal is obtained; Based on the intelligent power replenishment request signal, a main drive power-on instruction is sent to a power distribution unit PDU, and the main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to replenish power to the battery.

[0065] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0066] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for intelligently charging a vehicle battery, characterized in that: include: When the vehicle is in the OFF position and receives a level signal sent by the vehicle electrical component T-BOX, an intelligent power replenishment request signal is obtained; Based on the intelligent power replenishment request signal, a main drive power-on instruction is sent to a power distribution unit PDU, and the main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to replenish power to the battery.

2. The intelligent charging method for vehicle batteries according to claim 1, characterized in that: The sending a main drive power-on instruction to a power distribution unit PDU based on the intelligent power supplement request signal includes: The intelligent power supplement request signal is sent to the PDU; the intelligent power supplement request signal is used to instruct the PDU to determine the first fault state of the main positive relay; Receiving the first fault status sent by the PDU; Based on the first fault state, the main drive power-on instruction is sent to the PDU.

3. The intelligent charging method for vehicle batteries according to claim 2, characterized in that: The sending the main drive power-on instruction to the PDU based on the first fault state includes: Receiving a second fault state corresponding to the battery management system BMS; When both the first fault state and the second fault state are without power-on fault, a main negative relay pickup instruction is sent to the BMS; the main negative relay pickup instruction is used to instruct the BMS to control the main negative relay pickup state based on the connection state of the charging gun; Receiving a first pull-in state signal corresponding to the main negative relay sent by the BMS; Based on the first pull-in state signal, the main drive power-on instruction is sent to the PDU.

4. The intelligent charging method for vehicle batteries according to claim 3, characterized in that: The sending the main drive power-on instruction to the PDU based on the first pull-in state signal includes: When the first energizing state signal indicates that the main negative relay is energized, an auxiliary relay energizing instruction is sent to the PDU; the auxiliary relay energizing instruction is used to instruct the PDU to control the auxiliary relay to energize; Receiving a second pull-in state signal corresponding to the auxiliary relay sent by the PDU; Based on the second pull-in state signal, the main drive power-on instruction is sent to the PDU.

5. The intelligent charging method for vehicle batteries according to claim 4, characterized in that: The sending the main drive power-on instruction to the PDU based on the second pull-in state signal includes: When the second energizing state signal indicates that the auxiliary relay is energized, an enabling instruction is sent to the DCDC; the enabling instruction is used to instruct the DCDC to perform a self-check to obtain a working state of the DCDC; Receive a third fault state sent by a motor controller MCU, where the third fault state is determined by the MCU based on the DCDC working state, and the third fault state includes the MCU fault state and the transmission control unit TCU fault state; Based on the third fault state, the main drive power-on instruction is sent to the PDU.

6. The intelligent charging method for vehicle batteries according to claim 5, characterized in that: The sending the main drive power-on instruction to the PDU based on the third fault state includes: When the third fault state is no power-on fault, the main drive power-on instruction is sent to the PDU.

7. The intelligent charging method for a vehicle battery according to any one of claims 1 to 6, characterized in that: The method further comprises: When receiving the battery charging status sent by the T-BOX that the charging status is charging failure, a main negative relay forced closure instruction is sent to the battery management system BMS; the main negative relay forced closure instruction is used to instruct the BMS to control the main negative relay to be forcedly closure.

8. An intelligent charging device for a vehicle battery, characterized in that: include: The acquisition module is used to obtain the intelligent power replenishment request signal when the vehicle is in the OFF gear and receives the level signal sent by the vehicle-mounted electrical component T-BOX; The sending module is used to send a main drive power-on instruction to the power distribution unit PDU based on the intelligent power replenishment request signal, and the main drive power-on instruction is used to instruct the PDU to control the main positive relay to be energized, so as to control the energy storage converter DCDC to replenish power to the battery.

9. A vehicle controller, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the intelligent charging method for the vehicle battery as claimed in any one of claims 1 to 7 is implemented.

10. A vehicle, characterized in that: The vehicle comprises the vehicle controller as claimed in claim 9.

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