Vehicle-mounted starting battery capable of keeping emergency starting of vehicle in wireless mode

Abstract

The invention relates to the technical field of vehicle-mounted starting batteries, in particular to a vehicle-mounted starting battery capable of keeping emergency starting of a vehicle in a wireless mode. The battery realizes monitoring and protection of information such as voltage, current and battery cell temperature through a battery management system (BMS), and receives an instruction from a user mobile phone through a wireless Bluetooth communication module so as to control the discharge state of the battery. The battery management system (BMS) comprises a cell acquisition port, a battery equalization circuit, an MOS drive circuit, an acquisition chip (AFE), a temperature sensor (NTC) acquisition port, a microprocessor unit (MCU), a communication interface (UART / 485 / CAN), a parameter / protection information storage unit (ROM), a function key reserved port, a power conversion circuit, a power device (MOSFET) and a precision high-power resistor (shunt). According to the invention, real-time monitoring and protection of key parameters such as battery voltage, current and battery cell temperature are realized through a built-in battery management system (BMS).

Description

Technical Field

[0001] The invention relates to the technical field of vehicle-mounted starting batteries, and in particular to a vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle. Background Art

[0002] In traditional car starting systems, lead-acid batteries are the mainstream starting battery type. However, lead-acid batteries have many disadvantages, such as heavy weight, low energy density, short life, high maintenance cost, and high environmental pollution. With the continuous advancement of lithium-ion battery and sodium-ion battery technology, these new batteries have gradually become an alternative to car starting batteries due to their advantages such as light weight, high energy density, long life, and environmental protection.

[0003] Although lithium-ion batteries and sodium-ion batteries have significant advantages in performance, they still face some challenges in practical applications. For example, the design of the battery management system (BMS) needs to be more sophisticated and intelligent to ensure the safe and efficient operation of the battery under various working conditions. On the other hand, when the vehicle is parked for a long time or there is a leakage fault, the battery power will gradually run out, causing the vehicle to be unable to start. The traditional solution is to wait for rescue personnel to arrive for a jump start, which is not only time-consuming and labor-intensive, but also affects the user experience. Summary of the invention

[0004] The present invention proposes a vehicle-mounted starting battery that can maintain an emergency starting function through wireless communication. The battery uses a built-in battery management system (BMS) to achieve real-time monitoring and protection of key parameters such as battery voltage, current, and battery cell temperature. At the same time, it receives instructions from the user's mobile phone through a wireless Bluetooth communication module to control the discharge state of the battery, so that the vehicle can still be quickly started when the battery is low, improving user convenience and vehicle reliability.

[0005] The technical solution adopted by the present invention is: a vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle, wherein the battery realizes monitoring and protection of information such as voltage, current, and battery cell temperature through a battery management system (BMS), and receives instructions from a user's mobile phone through a wireless Bluetooth communication module to control the discharge state of the battery, wherein the battery management system (BMS) includes a battery cell acquisition port, a battery balancing circuit, a MOS drive circuit, an acquisition chip (AFE), a temperature sensor (NTC) acquisition port, a microprocessor unit (MCU), a communication interface (UART / 485 / CAN), a parameter / protection information storage unit (ROM), a function key reserved port, a power conversion circuit, a power device (MOSFET), and a precision high-power resistor (shunt).

[0006] The battery cell collection port is used to connect four strings / eight strings of lithium-ion batteries and sodium-ion batteries;

[0007] The battery balancing circuit is used to ensure balanced charging and discharging of each battery cell;

[0008] The MOS driving circuit is used to drive the power device (MOSFET) to perform switching action to control discharge and charge;

[0009] The acquisition chip (AFE) is used to collect battery voltage, current and temperature information;

[0010] The temperature sensor (NTC) collection port is used to connect a temperature sensor to monitor the battery core temperature;

[0011] The microprocessor unit (MCU) is used to perform battery charge and discharge test calculations and send instructions to the power device according to the battery status information transmitted by the acquisition chip;

[0012] The communication interface (UART / 485 / CAN) is used to transmit battery status information to external devices and systems;

[0013] The parameter / protection information storage unit (ROM) is used to store the setting parameters and protection information of the battery;

[0014] The function button reserved opening is used for a reserved human interaction button, so that the user can perform specific operations through the physical button;

[0015] The power conversion circuit is used to convert the voltage of the battery into the voltage required by the microprocessor unit and other circuits;

[0016] The power device (MOSFET) is used for actual charge and discharge control switching action;

[0017] The precision high-power resistor (shunt) is used to measure the battery current with high accuracy.

[0018] As a further improvement of the present invention, the microprocessor unit (MCU) automatically adjusts the parameters of the battery balancing circuit through preset algorithms and rules to ensure that the voltage difference between the cells in the battery pack does not exceed a predetermined threshold, thereby extending the service life of the battery.

[0019] As a further improvement of the present invention, the communication interface includes multiple wired interfaces (UART / 485 / CAN) and wireless Bluetooth communication modules to support multiple communication methods, ensuring that the battery status information can be transmitted to external devices and user mobile phones in a timely and accurate manner.

[0020] As a further improvement of the present invention, the wireless Bluetooth communication module supports connection with user equipment and receives a start-up instruction from the equipment when necessary, thereby improving the flexibility and reliability of emergency start-up.

[0021] As a further improvement of the present invention, the function button reserved port is connected to an external physical button, which is used by the user to quickly release the battery discharge authority in an emergency to start the vehicle without connecting through a mobile phone Bluetooth.

[0022] As a further improvement of the present invention, the protection information stored in the parameter / protection information storage unit (ROM) includes but is not limited to a low voltage warning threshold, a high voltage protection threshold, a high temperature protection threshold and a low temperature protection threshold to ensure the safety and stability of the battery under different working conditions.

[0023] As a further improvement of the present invention, the precision high-power resistor (shunt) is used to measure the battery current with high precision, and transmit the measurement result to the acquisition chip (AFE), thereby realizing real-time monitoring of the battery current.

[0024] As a further improvement of the present invention, the power conversion circuit can stably convert the output voltage of the battery into 5V and 3.3V voltages to meet the requirements of the microprocessor unit (MCU) and other peripheral circuits, ensuring the stable operation of the entire system.

[0025] As a further improvement of the present invention, the battery management system (BMS) also includes a built-in emergency start module, which is automatically activated when the battery voltage is lower than a preset start threshold, retaining sufficient power for emergency start of the vehicle, thereby avoiding the situation where the vehicle cannot be started due to battery exhaustion.

[0026] As a further improvement of the present invention, the battery management system (BMS) automatically identifies and handles mild leakage faults through a built-in algorithm, thereby reducing the frequency and cost of maintenance for users.

[0027] Beneficial effects of the present invention: The present invention provides a more intelligent, safe and convenient vehicle starting battery solution by integrating advanced battery management system (BMS) and wireless communication technology, which can significantly improve the user experience and improve the reliability of the vehicle. The specific beneficial effects are as follows:

[0028] (1) Extending battery life: The present invention can automatically adjust the charge and discharge parameters of each battery cell in the battery pack through the preset algorithm of the battery balancing circuit and the microprocessor unit (MCU), ensuring that the voltage difference between the battery cells does not exceed a predetermined threshold. This not only avoids damage caused by overcharging or over-discharging of a certain battery cell in the battery pack, but also extends the cycle life of the entire battery pack, reduces the frequency of battery replacement by users, and thus reduces the cost of use.

[0029] (2) Improving battery safety: The battery management system (BMS) of the present invention can monitor key parameters such as battery voltage, current and temperature in real time through a precise acquisition chip (AFE) and a temperature sensor (NTC). Once these parameters exceed or fall below the set protection threshold, the microprocessor unit (MCU) will immediately send instructions to the power device (MOSFET) to shut down discharge or charging, thereby preventing the battery from overheating, short circuit and other safety accidents under abnormal operating conditions. In addition, the parameter / protection information storage unit (ROM) stores a variety of protection information, further enhancing the safety of the battery.

[0030] (3) Enhanced user convenience: The present invention uses a wireless Bluetooth communication module, so that users can send instructions to the microprocessor unit (MCU) through a small program on their mobile phones to achieve remote control of the battery discharge status. When the battery power is low, the BMS will automatically take measures to shut down the discharge and retain sufficient power to start the vehicle in an emergency. When the vehicle needs to be started, the user only needs to connect through the mobile phone Bluetooth and click on the small program to release the discharge permission, so that the vehicle can be successfully started without waiting for external rescue or performing complex physical operations, which greatly improves the user's convenience and emergency response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a system block diagram of a vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] The present invention provides Figure 1 The battery management system (BMS) is used to monitor and protect the voltage, current, cell temperature and other information of the battery, and receives instructions from the user's mobile phone through a wireless Bluetooth communication module to control the discharge state of the battery. The battery management system (BMS) includes a cell collection port, a battery balancing circuit, a MOS drive circuit, an acquisition chip (AFE), a temperature sensor (NTC) collection port, a microprocessor unit (MCU), a communication interface (UART / 485 / CAN), a parameter / protection information storage unit (ROM), a function key reserved port, a power conversion circuit, a power device (MOSFET), and a precision high-power resistor (shunt).

[0034] The battery cell acquisition port of the present invention is used to connect four strings / eight strings of lithium-ion batteries and sodium-ion batteries; the battery balancing circuit is used to ensure balanced charging and discharging of each battery cell; the MOS drive circuit is used to drive the power device (MOSFET) to perform switching actions to control discharging and charging; the acquisition chip (AFE) is used to collect battery voltage, current and temperature information; the temperature sensor (NTC) acquisition port is used to connect the temperature sensor to monitor the battery cell temperature; the microprocessor unit (MCU) is used to perform battery charge and discharge test calculations, and send instructions to the power device according to the battery status information transmitted by the acquisition chip, and the microprocessor unit (MCU) U) automatically adjusts the parameters of the battery balancing circuit through preset algorithms and rules to ensure that the voltage difference between the cells in the battery pack does not exceed the predetermined threshold, thereby extending the battery life; the communication interface (UART / 485 / CAN) is used to transmit the battery status information to external devices and systems, and the communication interface includes multiple wired interfaces (UART / 485 / CAN) and wireless Bluetooth communication modules to support multiple communication methods, ensuring that the battery status information can be transmitted to external devices and user mobile phones in a timely and accurate manner. The wireless Bluetooth communication module supports connection with user devices and receives startup instructions from the device when necessary, thereby improving emergency startup. flexibility and reliability; the parameter / protection information storage unit (ROM) is used to store the setting parameters and protection information of the battery, and the protection information stored in the parameter / protection information storage unit (ROM) includes but is not limited to the low voltage warning threshold, the high voltage protection threshold, the high temperature protection threshold and the low temperature protection threshold to ensure the safety and stability of the battery under different working conditions; the function button reserved port is used for the reserved human interaction button so that the user can perform specific operations through the physical button, and the function button reserved port is connected to the external physical button, so that the user can quickly release the battery discharge permission in an emergency to start the vehicle without connecting through the mobile phone Bluetooth; The power conversion circuit is used to convert the battery voltage into the voltage required by the microprocessor unit and other circuits. The power conversion circuit can stably convert the output voltage of the battery into 5V and 3.3V voltages to meet the needs of the microprocessor unit (MCU) and other peripheral circuits, ensuring the stable operation of the entire system; the power device (MOSFET) is used for the actual charge and discharge control switch action; the precision high-power resistor (shunt) is used to measure the battery current with high precision, and the measurement result is transmitted to the acquisition chip (AFE), thereby realizing real-time monitoring of the battery current.

[0035] The battery management system (BMS) of the present invention also includes a built-in emergency start module, which is automatically activated when the battery voltage is lower than the preset start threshold, retaining enough power for emergency start of the vehicle, thereby avoiding the situation where the vehicle cannot be started due to battery exhaustion. The battery management system (BMS) automatically identifies and handles mild leakage faults through a built-in algorithm, thereby reducing the frequency and cost of maintenance for users.

[0036] Working principle: When the vehicle is parked for a long time or a leakage fault is found, the battery voltage will be transmitted to the acquisition chip through the acquisition line, and then the microprocessor unit (MCU) will set and determine that it has reached a low voltage warning. The microprocessor unit (MCU) sends instructions to the power device MOSFET to take measures to close the open discharge, thereby ensuring that the remaining power will not be consumed. At this time, the power is enough to start the car, but it is controlled by the microprocessor unit (MCU) to be closed to avoid continued loss of discharged power. When the vehicle needs to be used, enter through the mobile phone Bluetooth connection, use Bluetooth communication, use software to manually release the discharge permission, and send instructions to the microprocessor unit (MCU) to open the remaining power, so that the vehicle can be started successfully.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. 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 vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle, wherein the battery monitors and protects information such as voltage, current, and cell temperature through a battery management system (BMS), and receives instructions from a user's mobile phone through a wireless Bluetooth communication module to control the discharge state of the battery, characterized in that: The battery management system (BMS) includes a cell acquisition port, a battery balancing circuit, a MOS drive circuit, an acquisition chip (AFE), a temperature sensor (NTC) acquisition port, a microprocessor unit (MCU), a communication interface (UART / 485 / CAN), a parameter / protection information storage unit (ROM), a function key reserved port, a power conversion circuit, a power device (MOSFET), and a precision high-power resistor (shunt). The battery cell collection port is used to connect four strings / eight strings of lithium-ion batteries and sodium-ion batteries; The battery balancing circuit is used to ensure balanced charging and discharging of each battery cell; The MOS driving circuit is used to drive the power device (MOSFET) to perform switching action to control discharge and charge; The acquisition chip (AFE) is used to collect battery voltage, current and temperature information; The temperature sensor (NTC) collection port is used to connect a temperature sensor to monitor the battery core temperature; The microprocessor unit (MCU) is used to perform battery charge and discharge test calculations and send instructions to the power device according to the battery status information transmitted by the acquisition chip; The communication interface (UART / 485 / CAN) is used to transmit battery status information to external devices and systems; The parameter / protection information storage unit (ROM) is used to store the setting parameters and protection information of the battery; The function button reserved opening is used for a reserved human interaction button, so that the user can perform specific operations through the physical button; The power conversion circuit is used to convert the voltage of the battery into the voltage required by the microprocessor unit and other circuits; The power device (MOSFET) is used for actual charge and discharge control switching action; The precision high-power resistor (shunt) is used to measure the battery current with high accuracy.

2. The vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle according to claim 1, characterized in that: The microprocessor unit (MCU) automatically adjusts the parameters of the battery balancing circuit through preset algorithms and rules to ensure that the voltage difference between the cells in the battery pack does not exceed a predetermined threshold, thereby extending the service life of the battery.

3. The vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle according to claim 1, characterized in that: The communication interface includes multiple wired interfaces (UART / 485 / CAN) and wireless Bluetooth communication modules to support multiple communication methods, ensuring that battery status information can be transmitted to external devices and user mobile phones in a timely and accurate manner.

4. The vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle according to claim 3, characterized in that: The wireless Bluetooth communication module supports connection with user equipment and receives start-up instructions from the equipment when necessary, thereby improving the flexibility and reliability of emergency start-up.

5. The vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle according to claim 1, characterized in that: The function button reserved port is connected to an external physical button, which is used by the user to quickly release the battery discharge permission in an emergency to start the vehicle without connecting through the mobile phone Bluetooth.

6. The vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle according to claim 1, characterized in that: The protection information stored in the parameter / protection information storage unit (ROM) includes but is not limited to a low voltage warning threshold, a high voltage protection threshold, a high temperature protection threshold and a low temperature protection threshold to ensure the safety and stability of the battery under different working conditions.

7. The vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle according to claim 1, characterized in that: The precision high-power resistor (shunt) is used to measure the battery current with high precision, and transmit the measurement result to the acquisition chip (AFE), thereby realizing real-time monitoring of the battery current.

8. The vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle according to claim 1, characterized in that: The power conversion circuit can stably convert the output voltage of the battery into 5V and 3.3V voltages to meet the needs of the microprocessor unit (MCU) and other peripheral circuits, ensuring the stable operation of the entire system.

9. The vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle according to claim 1, characterized in that: The battery management system (BMS) also includes a built-in emergency start module, which is automatically activated when the battery voltage is lower than a preset start threshold, retaining sufficient power for emergency start of the vehicle, thereby avoiding the situation where the vehicle cannot be started due to battery depletion.

10. The vehicle-mounted starting battery capable of wirelessly maintaining emergency starting of a vehicle according to claim 9, characterized in that: The battery management system (BMS) automatically identifies and handles mild leakage faults through a built-in algorithm, thereby reducing the frequency and cost of maintenance for users.

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