Battery park management circuit, method, and vehicle

Abstract

The application relates to a battery parking management circuit, a method and a vehicle, and belongs to the technical field of battery management, and comprises a monitoring control module connected with a vehicle-mounted battery and a normal power module respectively and used for monitoring a power supply voltage and a power supply current provided by the vehicle-mounted battery for the normal power module in a parking state; an MCU module connected with the monitoring control module and used for calculating a parking power consumption of the vehicle-mounted battery based on the power supply voltage and the power supply current, and calculating real-time residual power of the vehicle-mounted battery based on the parking power consumption and initial residual power of the vehicle-mounted battery when the vehicle is powered off, and generating a power supply disconnection instruction when the real-time residual power is smaller than a power threshold value; the power threshold value is determined according to required power of engine ignition; and the monitoring control module is further used for disconnecting power supply of the vehicle-mounted battery for the normal power module in response to the power supply disconnection instruction. The application can prevent commercial vehicles from being powered off due to excessive power consumption of the vehicle-mounted battery caused by too many normal power modules connected when the vehicles are parked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery management, and in particular to a storage battery parking management circuit, method and vehicle. BACKGROUND

[0002] With the development of the intelligent degree of commercial vehicles, the requirements for parking monitoring and remote services are becoming higher and higher, and combined with the life needs of commercial vehicle drivers, more and more devices connected to the storage battery of the commercial vehicle are required to be connected to the power supply when the vehicle is parked.

[0003] When the commercial vehicle is in a parked state, the engine is in a closed state and cannot charge the storage battery of the vehicle, and the more and more common power modules connected to the storage battery of the vehicle will cause the static power consumption of the storage battery of the vehicle to be larger and larger when the vehicle is parked, which may cause the storage battery of the vehicle to consume too much power and cause the storage battery of the vehicle to be discharged, so that the storage battery of the vehicle cannot provide enough power for the vehicle ignition, and the user needs to externally connect a power supply to start the vehicle, which is very inconvenient.

[0004] Therefore, the prior art has the technical problem that the storage battery of the commercial vehicle is discharged when the vehicle is parked. SUMMARY

[0005] Therefore, it is necessary to provide a storage battery parking management circuit, method, vehicle and computer storage medium to solve the technical problem that the storage battery of the commercial vehicle is discharged when the vehicle is parked in the prior art.

[0006] In order to solve the above problems, the present application provides a storage battery parking management circuit, comprising:

[0007] A monitoring control module connected to the storage battery and the common power module, for monitoring the supply voltage and supply current provided by the storage battery for the common power module in the parked state;

[0008] An MCU module connected to the monitoring control module, for calculating the parking power consumption of the storage battery based on the supply voltage and the supply current, and calculating the real-time residual capacity of the storage battery based on the parking power consumption and the initial residual capacity of the storage battery when the vehicle is powered off, and generating a power supply disconnect instruction when the real-time residual capacity is less than an electric quantity threshold; the electric quantity threshold is determined according to the demand electric quantity of engine ignition;

[0009] The monitoring control module is further configured to disconnect the power supply of the storage battery to the common power module in response to the power supply disconnect instruction.

[0010] In a possible implementation, the monitoring control module comprises:

[0011] a voltage monitoring module for monitoring the supply voltage provided by the vehicle-mounted battery for the always-on module and transmitting the supply voltage to the MCU module through the CAN bus;

[0012] a shunt for detecting the supply current of the vehicle-mounted battery and transmitting the supply current to the MCU module through the CAN bus;

[0013] a switch control module for controlling the connection between the vehicle-mounted battery and the switch module, wherein the switch module is configured to control the switch power consumption of the vehicle;

[0014] an always-on control module for controlling the connection between the vehicle-mounted battery and the always-on module.

[0015] In a possible implementation, the monitoring control module comprises an electrical connection interface J1 to J5, a communication interface J6-1 and J6-2, a shunt R1, a relay KA1 and a relay KA2, wherein the relay KA1 comprises a magnetic switch KM1 and a magnetic switch KM2, and the relay KA2 comprises a magnetic switch KM3.

[0016] The electrical connection interface J1 is connected to the positive electrode of the voltage monitoring module and the vehicle-mounted battery, respectively, the electrical connection interface J2 is connected to one end of the shunt R1 and the negative electrode of the vehicle-mounted battery, respectively, the other end of the shunt R1 is connected to the frame bonding point through the electrical connection interface J3, the two ends of the relay KA1 are connected to the electrical connection interface J1 and the electrical connection interface J3, respectively, the two ends of the magnetic switch KM1 are connected to the electrical connection interface J1 and the electrical connection interface J4, respectively, the two ends of the magnetic switch KM2 are connected to the electrical connection interface J1 and the electrical connection interface J5, respectively, the two ends of the relay KA2 are connected to the electrical connection interface J1 and the MCU module, respectively, the two ends of the magnetic switch KM3 are connected to the electrical connection interface J1 and the electrical connection interface J5, respectively, and the communication interface J6-1 and J6-2 are connected to the CAN bus.

[0017] In a possible implementation, a manual switch K1 is further connected between the relay KA1 and the electrical connection interface J3.

[0018] In a possible implementation, when the relay KA1 is powered on, the magnetic switch KM1 and the magnetic switch KM2 can be controlled to be attracted, and when the relay KA2 is powered on, the magnetic switch KM3 can be controlled to be attracted.

[0019] In a possible implementation, the preset power threshold is the minimum required power for engine ignition.

[0020] The application further provides a battery parking management method applied to the battery parking management circuit in any of the above embodiments, and the battery parking management method comprises the following steps of:

[0021] The supply voltage and supply current provided by the vehicle-mounted battery for the always-on module in the parking state are monitored, and the parking power consumption of the vehicle-mounted battery is calculated based on the supply voltage and the supply current;

[0022] The real-time residual power of the vehicle-mounted battery is calculated based on the parking power consumption and the initial residual power of the vehicle-mounted battery when the vehicle is powered off;

[0023] When the real-time residual power is less than a preset power threshold, the supply of the vehicle-mounted battery for the always-on module is disconnected to ensure that the real-time residual power of the vehicle-mounted battery meets the ignition demand power of the engine.

[0024] In a possible implementation, after the supply of the vehicle-mounted battery for the always-on module is disconnected, the method further comprises the following steps of:

[0025] When the vehicle is powered on again, a prompt of low battery power of the vehicle-mounted battery is sent.

[0026] In a possible implementation, when the real-time residual power is less than the preset power threshold, the method further comprises the following steps of:

[0027] A prompt of low battery power of the vehicle-mounted battery is sent to the driver client through network communication.

[0028] The application further provides a vehicle comprising the battery parking management circuit in any of the above embodiments.

[0029] The battery parking management circuit provided by the application can monitor the supply voltage and supply current provided by the vehicle-mounted battery for the always-on module in the parking state, calculate the parking power consumption of the vehicle-mounted battery based on the supply voltage and the supply current, calculate the real-time residual power of the vehicle-mounted battery based on the parking power consumption and the initial residual power of the vehicle-mounted battery when the vehicle is powered off, and control the monitoring control module to disconnect the supply of the vehicle-mounted battery for the always-on module when the real-time residual power is less than a preset power threshold, so as to ensure that the real-time residual power of the vehicle-mounted battery meets the ignition demand power of the engine, thereby preventing commercial vehicles from running out of power due to excessive power consumption of the vehicle-mounted battery caused by too many always-on modules connected when parking. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0031] Fig. 1 is a structural schematic diagram of a battery parking management circuit provided by an embodiment of the present application;

[0032] Figure 2 Fig. 2 is a structural schematic diagram of a monitoring control module provided by an embodiment of the present application;

[0033] Figure 3 Fig. 3 is a circuit diagram of a battery parking management circuit provided by an embodiment of the present application;

[0034] Figure 4 Fig. 4 is a flowchart of a battery parking management method provided by an embodiment of the present application. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present application will be described in detail below with reference to the drawings, wherein the drawings constitute a part of the present application and are used to explain the principles of the present application together with the embodiments of the present application, but are not used to limit the scope of the present application.

[0036] In this article, the phrase "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] One specific embodiment of the present application, as shown in Fig. 1, discloses a battery parking management circuit, comprising: Figure 1

[0038] A monitoring control module 101 is connected with a vehicle-mounted battery 102 and a constant power module 103 respectively, for monitoring the supply voltage and supply current provided by the vehicle-mounted battery 102 for the constant power module 103 in the parking state;

[0039] ​The MCU module 104 is connected with the monitoring control module 101, and is used for calculating the parking electricity consumption of the vehicle-mounted battery 102 based on the power supply voltage and the power supply current, and calculating the real-time residual electricity of the vehicle-mounted battery 102 based on the parking electricity consumption and the initial residual electricity of the vehicle-mounted battery 102 when the vehicle is powered off, and generating a power supply disconnection instruction when the real-time residual electricity is less than an electricity threshold value; the electricity threshold value is determined according to the minimum demand electricity of engine ignition.

[0040] The monitoring control module 101 is further used for disconnecting the power supply of the vehicle-mounted battery 102 to the constant power module 103 in response to the power supply disconnection instruction.

[0041] In the embodiment of the present application, the battery parking management circuit is used for managing the electricity consumption of the battery when the commercial vehicle is parked. The constant power module 103 refers to the module that needs continuous electricity when the vehicle is parked, including but not limited to the vehicle-mounted air conditioner, the vehicle-mounted light, the vehicle-mounted monitoring device, etc. The general reason for the loss of electricity of the vehicle-mounted battery is the long-time use of the constant power module. Therefore, the monitoring control module 101 can monitor the power supply voltage and the power supply current of the constant power module 103 provided by the vehicle-mounted battery 102 in the parking state, and send the power supply voltage and the power supply current to the MCU module 104 through the CAN bus. The MCU module 104 calculates the electricity consumption of the constant power module 103, combines the initial residual electricity of the vehicle-mounted battery when the vehicle is powered off, calculates the real-time residual electricity of the vehicle-mounted battery 102, generates a power supply disconnection instruction when the real-time residual electricity is less than an electricity threshold value, and sends the power supply disconnection instruction to the control monitoring control module 101. The control monitoring control module 101 disconnects the power supply of the constant power module 103 based on the power supply disconnection instruction. The electricity threshold value is determined according to the minimum demand electricity of engine ignition.

[0042] The battery parking management circuit provided by the present application can monitor the power supply voltage and the power supply current of the constant power module provided by the vehicle-mounted battery in the parking state, calculate the parking electricity consumption of the vehicle-mounted battery based on the power supply voltage and the power supply current, calculate the real-time residual electricity of the vehicle-mounted battery based on the parking electricity consumption and the initial residual electricity of the vehicle-mounted battery when the vehicle is powered off, control the monitoring control module to disconnect the power supply of the constant power module by the vehicle-mounted battery when the real-time residual electricity is less than the preset electricity threshold value, and ensure that the real-time residual electricity of the vehicle-mounted battery meets the demand electricity of engine ignition, so as to prevent the commercial vehicle from losing electricity due to excessive use of the constant power module when parked.

[0043] Optionally, as shown in Figure 2 The monitoring control module 101 comprises:

[0044] The voltage monitoring module 105 is used for monitoring the power supply voltage provided by the vehicle-mounted storage battery 102 for the always-on module 103, and transmitting the power supply voltage to the MCU module 104 through the CAN bus;

[0045] The shunt 106 is used for detecting the power supply current of the vehicle-mounted storage battery 102, and transmitting the power supply current to the MCU module 104 through the CAN bus;

[0046] The switch electric control module 107 is used for controlling the on-off of the vehicle-mounted storage battery 102 and the switch electric module 108, and the switch electric module 108 is used for controlling the switch electric of the vehicle.

[0047] The always-on control module 109 is used for controlling the on-off of the vehicle-mounted storage battery 102 and the always-on module 103.

[0048] In the embodiment of the application, the monitoring control module 101 comprises the electric connection interfaces J1 to J5, the communication interfaces J6-1 and J6-2, the shunt R1, the relays KA1 and KA2, the relay KA1 comprises the magnetic attraction switches KM1 and KM2, and the relay KA2 comprises the magnetic attraction switch KM3. Figure 3

[0049] The electric connection interface J1 is connected to the positive pole of the voltage monitoring module and the vehicle-mounted storage battery respectively, the electric connection interface J2 is connected to one end of the shunt R1 and the negative pole of the vehicle-mounted storage battery respectively, the other end of the shunt R1 is connected to the frame bonding point through the electric connection interface J3, the two ends of the relay KA1 are connected to the electric connection interface J1 and the electric connection interface J3 respectively, the two ends of the magnetic attraction switch KM1 are connected to the electric connection interface J1 and the electric connection interface J4 respectively, the two ends of the magnetic attraction switch KM2 are connected to the electric connection interface J1 and the electric connection interface J5 respectively, the two ends of the relay KA2 are connected to the electric connection interface J1 and the MCU module respectively, the two ends of the magnetic attraction switch KM3 are connected to the electric connection interface J1 and the electric connection interface J5 respectively, and the communication interfaces J6-1 and J6-2 are connected to the CAN bus.

[0050] The manual switch K1 is further connected between the relay KA1 and the electric connection interface J3.

[0051] The magnetic attraction switch KM1 and the magnetic attraction switch KM2 can be controlled to be attracted when the relay KA1 is powered on, and the magnetic attraction switch KM3 can be controlled to be attracted when the relay KA2 is powered on.

[0052] The voltage monitoring module is used for monitoring the voltage between the two poles of the vehicle-mounted storage battery, and transmitting the voltage signal to the MCU module in real time;

[0053] The shunt R1 is connected between the negative pole of the storage battery and the bonding end of the whole vehicle, and is used for monitoring the working current of the whole vehicle, and transmitting the current signal to the MCU module in real time; ​

[0054] Wherein the MCU module calculates the change of the electric quantity of the vehicle battery according to the real-time data of the supply voltage and the supply current, and gives the MCU the battery parameters calibrated through the CAN bus, and in combination with the initial residual electric quantity of the vehicle battery when the vehicle is powered off, the real-time residual electric quantity of the vehicle battery can be calculated;

[0055] Wherein the relay coil KA1 is used for switching the electric control, when the driver opens K1, the coil KA1 is connected, KM1 and KM2 are connected, the interfaces J4 and J5 are normally powered, and the switching power supply function is started;

[0056] When the switching power is opened, the MCU module determines that the real-time residual electric quantity of the vehicle battery is in the safety line, controls KA2 to be attracted, and KM3 is connected;

[0057] When the driver stops the vehicle and closes the switching power K1, KA1 is disconnected, KM1 and KM2 are disconnected, the switching power interface J4 is powered off, and since KM3 is still in the closed state at this time, the normal power supply of the constant power device is normal.

[0058] After the driver parks the vehicle, K1 is closed, MCU controls KA2 to be connected, KM3 is connected to the normal power supply, MCU sleeps and automatically wakes up at a certain frequency to test the real-time residual electric quantity of the vehicle battery, when the real-time residual electric quantity of the vehicle battery is less than a certain safety preset value such as the minimum demand electric quantity of the generator ignition, MCU sends the power loss reminder to TBOX through the CAN network, TBOX sends the information to the cloud, which is used to send the reminder to the driver's mobile device, at the same time, controls KA2 to be disconnected, KM3 to be disconnected, and the constant power device of the whole vehicle is powered off, MCU records the real-time residual electric quantity of the vehicle battery at this time and starts to sleep;

[0059] When the driver reconnects K1 switch, KA1 is turned on, KM1 and KM2 are connected at the same time, the whole vehicle constant power and switching power are connected at the same time, MCU sends the SOC value to the instrument or TBOX through the CAN bus module, and the instrument or TBOX sends the prompt information to the driver: the battery is power loss, please start the engine as soon as possible.

[0060] The application adopts an integrated power management scheme to integrate battery data acquisition, data processing and power supply control into one, the controller has a static sleep function, can reduce the static power consumption of the whole vehicle to the maximum extent and prolong the parking time of the whole vehicle. The double relays are used to simultaneously open the whole vehicle constant power and switching power network, and when the switching power network is closed, the constant power network can be normally powered. The residual power of the battery can be monitored in real time in the whole vehicle parking scene, and whether the residual power of the battery can meet the engine starting demand can be autonomously judged, the whole vehicle power network can be controlled to be closed according to the judgment result to keep the battery power safe and avoid the whole vehicle from being stuck in the parking lot for a long time. In the parking state of the commercial vehicle, the battery power state can be monitored, and a protection strategy can be provided and a user can be reminded in the instant of battery power loss. When the driver opens the switching power next time, the switching power and the constant power can be connected at the same time and the driver can be sent a power loss warning to prompt the driver to start the engine quickly to avoid being stuck.

[0061] As a possible implementation of the application, as shown in the figure, in the implementation, a battery parking management method is provided, applied to the battery parking management circuit of any of the preceding embodiments, comprising: Figure 4

[0062] S401, the supply voltage and supply current provided by the vehicle-mounted battery for the constant power module in the parking state are monitored, the parking power consumption of the vehicle-mounted battery is calculated based on the supply voltage and supply current;

[0063] S402, the real-time residual power of the vehicle-mounted battery is calculated based on the parking power consumption and the initial residual power of the vehicle-mounted battery when the vehicle is powered off;

[0064] S403, when the real-time residual power is less than a preset power threshold, the supply of the vehicle-mounted battery for the constant power module is disconnected to ensure that the real-time residual power of the vehicle-mounted battery meets the ignition demand power of the engine.

[0065] In the embodiment of the application, by monitoring the supply voltage and supply current provided by the vehicle-mounted battery for the constant power module in the parking state, the parking power consumption of the vehicle-mounted battery is calculated based on the supply voltage and supply current, the real-time residual power of the vehicle-mounted battery is calculated based on the parking power consumption and the initial residual power of the vehicle-mounted battery when the vehicle is powered off, and when the real-time residual power is less than a preset power threshold, the supply of the vehicle-mounted battery for the constant power module is disconnected by the monitoring control module to ensure that the real-time residual power of the vehicle-mounted battery meets the ignition demand power of the engine, which can prevent the commercial vehicle from losing power due to excessive power consumption of the vehicle-mounted battery caused by too many constant power modules connected in the parking state.

[0066] Optionally, after the supply of the vehicle-mounted battery for the constant power module is disconnected, the method comprises:

[0067] ​When the vehicle is re-powered, a prompt of low battery level of the vehicle battery is sent.

[0068] Further, when the real-time residual battery level is less than the preset battery level threshold, the method comprises:

[0069] The prompt of low battery level of the vehicle battery is sent to the driver client through network communication.

[0070] In the embodiments of the present application, when the real-time residual battery level of the vehicle battery is less than the preset battery level threshold, the driver can be reminded to start the engine to charge the vehicle battery in time, and optionally, when the vehicle is re-powered, the driver can be prompted of low battery level of the vehicle battery through the instrument panel or TBOX, or the prompt of low battery level of the vehicle battery can be directly sent to the driver client through network communication, so as to prevent the driver from continuing to use the vehicle battery to supply power to the normal power module without knowing that the battery level of the vehicle battery is low, thereby causing the vehicle battery to be discharged.

[0071] The present application also provides a vehicle comprising a battery parking management circuit, which is the battery parking management circuit according to any one of the preceding embodiments, and can perform the battery parking management method according to the preceding embodiments to manage the vehicle battery.

[0072] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A battery parking management circuit, characterized in that, include: The monitoring and control module is connected to the vehicle battery and the constant power module respectively, and is used to monitor the supply voltage and supply current provided by the vehicle battery to the constant power module when the vehicle is parked. The MCU module, connected to the monitoring and control module, is used to calculate the parking power consumption of the vehicle battery based on the power supply voltage and the power supply current, and to calculate the real-time remaining power of the vehicle battery based on the parking power consumption and the initial remaining power of the vehicle battery when the vehicle is powered off. When the real-time remaining power is less than a preset power threshold, a power disconnection command is generated. The preset power threshold is determined based on the power required for engine ignition. The monitoring and control module is also used to disconnect the power supply from the vehicle battery to the constant power module in response to a power disconnection command; The monitoring and control module includes: The voltage monitoring module is used to monitor the supply voltage provided by the vehicle battery to the constant power module when the vehicle is parked, and transmit the supply voltage to the MCU module via the CAN bus; The shunt is used to detect the supply current of the vehicle battery and transmit the supply current to the MCU module via the CAN bus; A power switching control module is used to control the connection and disconnection between the vehicle battery and the power switching module; the power switching module is used to control the power supply of the vehicle. A constant power control module is used to control the connection and disconnection between the vehicle battery and the constant power module; The monitoring and control module includes: electrical connection interfaces J1 to J5, communication interfaces J6-1 and J6-2, shunt R1, relay KA1 and relay KA2, wherein relay KA1 includes magnetic switches KM1 and KM2, and relay KA2 includes magnetic switch KM3; The electrical connection interface J1 is connected to the voltage monitoring module and the positive terminal of the vehicle battery, respectively. The electrical connection interface J2 is connected to one end of the shunt R1 and the negative terminal of the vehicle battery, respectively. The other end of the shunt R1 is connected to the vehicle frame ground point through the electrical connection interface J3. The two ends of the relay KA1 are connected to the electrical connection interfaces J1 and J3, respectively. The two ends of the magnetic switch KM1 are connected to the electrical connection interfaces J1 and J4, respectively. The two ends of the magnetic switch KM2 are connected to the electrical connection interfaces J1 and J5, respectively. The two ends of the relay KA2 are connected to the electrical connection interface J1 and the MCU module, respectively. The two ends of the magnetic switch KM3 are connected to the electrical connection interfaces J1 and J5, respectively. The communication interfaces J6-1 and J6-2 are connected to the CAN bus.

2. The battery parking management circuit according to claim 1, characterized in that, A manual switch K1 is also connected between the relay KA1 and the electrical connection interface J3.

3. The battery parking management circuit according to claim 1, characterized in that, When the relay KA1 is energized, it can control the magnetic switches KM1 and KM2 to close, and when the relay KA2 is energized, it can control the magnetic switch KM3 to close.

4. The battery parking management circuit according to claim 1, characterized in that, The preset power threshold is the minimum power required for engine ignition.

5. A battery parking management method, applied to the battery parking management circuit according to any one of claims 1-4, characterized in that, The method includes: Monitor the supply voltage and current provided by the vehicle battery to the constant power module when the vehicle is parked, and calculate the parking power consumption of the vehicle battery based on the supply voltage and the supply current; The real-time remaining power of the vehicle battery is calculated based on the parking power consumption and the initial remaining power of the vehicle battery when the vehicle is powered off. When the real-time remaining power is less than a preset power threshold, the power supply from the vehicle battery to the constant power module is disconnected to ensure that the real-time remaining power of the vehicle battery meets the ignition power requirements of the engine.

6. The battery parking management method according to claim 5, characterized in that, After disconnecting the power supply from the vehicle battery to the constant power module, the method further includes: When the vehicle is powered on again, a warning message will be issued indicating that the vehicle's battery is low.

7. The battery parking management method according to claim 5, characterized in that, When the real-time remaining battery power is less than a preset battery power threshold, the method further includes: The system sends a low battery warning to the driver's client via network communication.

8. A vehicle, characterized in that, It includes a battery parking management circuit, wherein the battery parking management circuit is the battery parking management circuit of any one of claims 1-4.

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