Intelligent emergency starting power supply

Abstract

According to the intelligent emergency starting power supply, the working temperature range of a battery module is-30 DEG C to 70 DEG C, the working temperature range is wide, the low-temperature performance is good, and the problem that electricity cannot be discharged at low temperature is solved. A battery management system (BMS) monitors and displays the state of a battery module in real time, guides a user to use the battery module in a standard mode and avoids battery abuse, a charging interface and a discharging interface are different to control charging and discharging separately, physical fool-proof of the charging and discharging interface can be achieved, connection errors of the user are avoided, reverse current control is added to the battery discharging interface, and the battery charging and discharging efficiency is improved. The vehicle can be prevented from reversely charging the low-voltage power supply. When a fault occurs, a user can be quickly reminded to pay attention through audible and visual alarm; the display screen displays the state of the battery in real time, including fault type, residual electric quantity, voltage and other information. And the battery management system BMS and the fuse perform dual short-circuit protection, so that the power supply is higher in safety and better in reliability.

Description

Technical Field

[0001] The invention belongs to the technical field of emergency power supplies, and in particular relates to an intelligent emergency starting power supply. Background Art

[0002] The car emergency power supply has the advantages of small size and easy to carry, and is loved by many car owners. However, the products on the market currently have the following problems: first, the low-temperature discharge performance is poor, the low-temperature discharge rate in winter is insufficient, and the vehicle cannot start; second, the battery lacks control, which leads to battery abuse and premature termination of life; third, the battery capacity is roughly estimated, showing sufficient power but insufficient actual power, which is easy to mislead users; fourth, there is a lack of guidance. If the user does not remove the emergency power supply in time after the vehicle is started, the low-voltage power supply of the vehicle may charge the emergency power supply, which may cause the emergency power supply to overcharge or overcurrent. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides an intelligent emergency starting power supply.

[0004] The technical solution adopted by the present invention is: An intelligent emergency starting power supply includes a battery module, the operating temperature of the battery module is -30°C-70°C; it is assembled with cylindrical low-temperature batteries, which are small in size and flexible in structure. The operating temperature can meet the requirements of most application scenarios, solving the problem that the vehicle cannot be started due to the inability to discharge at low temperature; A battery management system BMS, wherein the battery management system BMS includes an IC integrated chip, a battery voltage acquisition module, a temperature acquisition module, a loop current acquisition module, a communication interface module, and a MOS drive module; MOS tube module, including charging MOS tube and discharging MOS tube; The battery charging interface includes a positive charging interface and a negative charging interface. The positive charging interface is connected to the positive end of the battery module. The negative end of the battery module is divided into two paths. One path is connected to the negative charging interface through a charging MOS tube to form a charging circuit. The charging MOS tube is connected to the MOS driving module. The battery discharge interface includes a positive discharge interface and a negative discharge interface. The positive discharge interface is connected to the positive end of the battery module. The other path of the negative end of the battery module is connected to the negative discharge interface through a discharge MOS tube to form a discharge loop. The discharge MOS tube is connected to the MOS drive module. The battery voltage module obtains the voltage information of the battery module and transmits it to the IC integrated chip, and the temperature acquisition module obtains the temperature information of the battery module and transmits it to the IC integrated chip; the loop current acquisition module is arranged in series at the negative end of the battery module to collect the loop current of the charging loop or the discharging loop and transmit it to the IC integrated chip; the IC integrated chip makes a fault judgment based on the obtained voltage information, temperature information and loop current information, and generates a driving instruction of the MOS driving module based on the judgment information to control the on and off of the charging MOS tube and the discharging MOS tube; and the IC integrated chip controls the MOS driving module to drive the discharging MOS tube to disconnect after the discharge setting time of the discharge loop; on the other hand, the IC integrated chip combines the obtained voltage information, temperature information and loop current information with the OCV performance table of the battery module to estimate the remaining capacity of the battery module; The communication interface module is connected to the display alarm module, and the IC integrated chip uploads the obtained battery status information, fault type and battery remaining capacity to the display alarm module.

[0005] As a preferred solution of the present invention, the battery management system BMS also includes a weak current switch module, which is connected to a function button. The function button sends instructions to the IC integrated chip through the weak current switch module to control startup, shutdown and timing cancellation.

[0006] As a preferred solution of the present invention, the display alarm module includes a display screen, a player and an indicator light; the function key set is installed on the display alarm module. The display screen is used to display information such as the voltage, current, temperature, remaining capacity and fault type of the battery module. The indicator light and the display screen can be used to check the battery module status and read the battery fault information; the player uses a speaker and an indicator light to make an audible and visual alarm in the event of a fault, low battery, etc.

[0007] As a preferred solution of the present invention, the positive charging interface and the positive discharging interface are the same interface. The charging interface and the discharging interface use different interfaces to control charging and discharging separately, which can realize physical foolproofing of the charging and discharging interfaces and avoid user connection errors. In addition, the battery discharging interface is equipped with reverse current control to prevent the vehicle from reversely charging to the low-voltage power supply.

[0008] As a preferred solution of the present invention, a fuse is provided on the line between the positive terminal of the battery module and the positive charge / discharge interface. The fuse and the overcurrent and short circuit protection of the battery management system BMS itself are superimposed to play a double short circuit protection role, thereby improving the safety performance of the emergency starting power supply and reducing the risk caused by short circuit.

[0009] As a preferred solution of the present invention, the battery management system BMS is activated by operating the function button, the timing function is started by default, and the timing function can be canceled by the operating function button; the battery management system BMS self-checks, and if there is a fault in the self-check, the player and the indicator light are controlled to sound and light alarm, and the display screen displays the self-check fault type, so that the discharge MOS tube is always disconnected; the self-check fault includes acquisition fault, communication fault, overvoltage and undervoltage fault; if the self-check is normal, it is determined whether the capacity of the battery module is sufficient, if the capacity is not sufficient, the battery management system BMS controls the display alarm module to remind the user to charge; if the capacity is sufficient, the user is reminded to connect the discharge line to start the vehicle; During discharge, the load is connected to the positive discharge interface and the negative discharge interface, and the battery management system BMS only closes the discharge MOS tube. When the battery management system BMS determines that a circuit fault occurs, the discharge MOS tube is disconnected; the circuit fault types include overcharge fault, over-discharge fault, overcurrent fault, temperature alarm fault, and short circuit fault.

[0010] When the vehicle is started, if the discharge wire is not disconnected, the battery management system BMS controls the display alarm module to warn the user after the discharge warning time is reached. When the discharge disconnection time is reached, the battery management system BMS directly disconnects the discharge MOS tube and the discharge ends. When charging, the charger is connected to the positive charging interface and the negative charging interface, and the battery management system BMS only closes the charging MOS tube.

[0011] The present invention has the following advantages: The operating temperature range of the battery module is -30℃-70℃, with a wide operating temperature range and good low-temperature performance, which solves the problem of not being able to discharge electricity at low temperatures. The battery management system BMS monitors and displays the status of the battery module in real time, guides users to use it in a standardized manner, and avoids battery abuse. When a fault occurs, the user can be quickly reminded through sound and light alarms; the display screen displays the battery status in real time, including fault type, remaining power, voltage and other information. The battery management system BMS and fuse have dual short-circuit protection, which makes the power supply safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only 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.

[0013] Figure 1 It is a circuit schematic diagram of the present invention.

[0014] Figure 2 It is a system flow chart of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0016] Example: An intelligent emergency starting power supply, such as Figure 1 As shown, it includes a battery module, and the operating temperature of the battery module is -30℃-70℃; it is assembled with cylindrical low-temperature batteries, which are small in size and flexible in structure. The operating temperature can meet the requirements of most application scenarios and solve the problem that the vehicle cannot be started due to the inability to discharge at low temperature; A battery management system BMS, wherein the battery management system BMS includes an IC integrated chip, a battery voltage acquisition module, a temperature acquisition module, a loop current acquisition module, a communication interface module, a weak current switch module, and a MOS drive module; MOS tube module, including charging MOS tube and discharging MOS tube; The battery charging interface includes a positive charging interface and a negative charging interface. The positive charging interface is connected to the positive end of the battery module. The negative end of the battery module is divided into two paths. One path is connected to the negative charging interface through a charging MOS tube to form a charging circuit. The charging MOS tube is connected to the MOS driving module. The battery discharge interface includes a positive discharge interface and a negative discharge interface. The positive discharge interface is connected to the positive end of the battery module. The other path of the negative end of the battery module is connected to the negative discharge interface through a discharge MOS tube to form a discharge loop. The discharge MOS tube is connected to the MOS drive module. The positive charging interface and the positive discharging interface are the same interface. The charging interface and the discharging interface use different interfaces to control charging and discharging separately, which can realize physical foolproofing of the charging and discharging interfaces and avoid user connection errors.

[0017] A fuse is installed on the line between the positive terminal of the battery module and the positive charge / discharge interface. The fuse and the overcurrent and short-circuit protection of the battery management system BMS itself play a double short-circuit protection role, improving the safety performance of the emergency starting power supply and reducing the risk caused by short circuit.

[0018] The battery voltage module uses a voltage sensor connected in parallel at the positive and negative ends of the battery module to obtain the voltage information of the battery module and transmit it to the IC integrated chip. The temperature acquisition module uses a temperature sensor to obtain the temperature information of the battery module and transmit it to the IC integrated chip; the loop current acquisition module uses a current sensor connected in series at the negative end of the battery module to collect the loop current of the charging loop or the discharging loop and transmit it to the IC integrated chip; the IC integrated chip makes fault judgment based on the obtained voltage information, temperature information and loop current information, and generates a driving instruction of the MOS driving module based on the judgment information to control the on and off of the charging MOS tube and the discharging MOS tube; Circuit fault types include overcharge fault, over discharge fault, over current fault, temperature alarm fault, and short circuit fault.

[0019] The IC integrated chip will synchronously transmit the battery fault type, voltage, temperature and current information to the display alarm module through the communication interface module. The display alarm module includes a display screen, a speaker and an indicator light. The function button set is installed on the display alarm module. The display screen is used to display the voltage, current, temperature, remaining capacity and fault type of the battery module. The indicator light and the display screen can be used to check the battery module status and read the battery fault information. The player uses the speaker and indicator light to make sound and light alarms in the event of faults, low battery and other situations that require alarms.

[0020] The weak current switch module is connected to the function button, and the function button sends instructions to the IC integrated chip through the weak current switch module to control the power on, power off and timing cancellation, and realizes the power on, power off and timing cancellation according to different durations.

[0021] After the discharge setting time, the IC integrated chip controls the MOS driver module to drive the discharge MOS tube to disconnect, preventing the vehicle power supply from reversely charging the battery module through the battery discharge interface; On the other hand, the IC integrated chip combines the acquired voltage information, temperature information and loop current information with the OCV performance table of the battery module to estimate the remaining capacity of the battery module; and determines whether charging is required and whether discharge to the vehicle power supply can be performed based on the estimated remaining battery capacity.

[0022] The IC integrated chip uploads the obtained battery status information, fault type and remaining battery capacity to the display alarm module, which includes a display screen, a player and an indicator light; the function key set is installed on the display alarm module. The display screen is used to display the voltage, current, temperature, remaining capacity and fault type of the battery module. The indicator light and the display screen can be used to check the battery module status and read the battery fault information; the player uses the speaker and indicator light to make sound and light alarms in the event of faults, low battery and other situations that require alarms.

[0023] like Figure 2As shown, the operating function button activates the battery management system BMS, the timing function is started by default, and the operating function button can cancel the timing function independently; the battery management system BMS self-checks, and if there is a fault in the self-check, the player and indicator light are controlled to sound and light alarm, and the display screen displays the self-check fault type, so that the discharge MOS tube is always disconnected; the self-check fault includes acquisition fault, communication fault, overvoltage and undervoltage fault; if the self-check is normal, it is determined whether the capacity of the battery module is sufficient. If the capacity is not sufficient, the battery management system BMS controls the display alarm module to remind the user to charge; if the capacity is sufficient, it reminds the user to connect the discharge line to start the vehicle; During discharge, the load is connected to the positive discharge interface and the negative discharge interface, and the battery management system BMS only closes the discharge MOS tube. When the battery management system BMS determines that a circuit fault occurs, the discharge MOS tube is disconnected; the circuit fault types include overcharge fault, over-discharge fault, overcurrent fault, temperature alarm fault, and short circuit fault.

[0024] When the vehicle is started, if the power line is not disconnected, the battery management system BMS controls the display alarm module to warn the user after the discharge warning time reaches 10 seconds. After 5 seconds, if there is still voltage on the discharge interface, the battery management system BMS directly disconnects the discharge MOS tube and the discharge ends. When charging, the charger is connected to the positive charging interface and the negative charging interface, and the battery management system BMS only closes the charging MOS tube.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent emergency starting power supply, characterized in that: Comprising a battery module, wherein the operating temperature of the battery module is -30°C to 70°C; A battery management system BMS, wherein the battery management system BMS includes an IC integrated chip, a battery voltage acquisition module, a temperature acquisition module, a loop current acquisition module, a communication interface module, and a MOS drive module; MOS tube module, including charging MOS tube and discharging MOS tube; The battery charging interface includes a positive charging interface and a negative charging interface. The positive charging interface is connected to the positive end of the battery module. The negative end of the battery module is divided into two paths. One path is connected to the negative charging interface through a charging MOS tube to form a charging circuit. The charging MOS tube is connected to the MOS driving module. The battery discharge interface includes a positive discharge interface and a negative discharge interface. The positive discharge interface is connected to the positive end of the battery module. The other path of the negative end of the battery module is connected to the negative discharge interface through a discharge MOS tube to form a discharge loop. The discharge MOS tube is connected to the MOS drive module. The battery voltage module obtains the voltage information of the battery module and transmits it to the IC integrated chip, and the temperature acquisition module obtains the temperature information of the battery module and transmits it to the IC integrated chip; the loop current acquisition module is arranged in series at the negative end of the battery module to collect the loop current of the charging loop or the discharging loop and transmit it to the IC integrated chip; the IC integrated chip makes a fault judgment based on the obtained voltage information, temperature information and loop current information, and generates a driving instruction of the MOS driving module based on the judgment information to control the on and off of the charging MOS tube and the discharging MOS tube; and the IC integrated chip controls the MOS driving module to drive the discharging MOS tube to disconnect after the discharge setting time of the discharge loop; on the other hand, the IC integrated chip combines the obtained voltage information, temperature information and loop current information with the OCV performance table of the battery module to estimate the remaining capacity of the battery module; The communication interface module is connected to the display alarm module, and the IC integrated chip uploads the obtained battery status information, fault type and battery remaining capacity to the display alarm module.

2. The intelligent emergency starting power supply according to claim 1 is characterized in that: The battery management system BMS also includes a weak current switch module, which is connected to a function button. The function button sends instructions to the IC integrated chip through the weak current switch module to control power on, power off and cancel timing.

3. The intelligent emergency starting power supply according to claim 2 is characterized in that: The display alarm module comprises a display screen, a player and an indicator light; and a function key set is installed on the display alarm module.

4. The intelligent emergency starting power supply according to claim 2 or 3, characterized in that: The positive electrode charging interface and the positive electrode discharging interface are the same interface.

5. The intelligent emergency starting power supply according to claim 4 is characterized in that: A fuse is provided on the line between the positive terminal of the battery module and the positive electrode charge / discharge interface.

6. The intelligent emergency starting power supply according to claim 5 is characterized in that: The function button is operated to activate the battery management system BMS. The battery management system BMS self-checks. If there is a fault in the self-check, the player and indicator light are controlled to give an audible and visual alarm. The display screen displays the self-check fault type, so that the discharge MOS tube is always disconnected. If the self-check is normal, it determines whether the capacity of the battery module is sufficient. If the capacity is not sufficient, the battery management system BMS controls the display alarm module to remind the user to charge. If the capacity is sufficient, the user is reminded to connect the discharge line to start the vehicle. During discharge, the load is connected to the positive discharge interface and the negative discharge interface, and the battery management system BMS only closes the discharge MOS tube. When the battery management system BMS determines that a circuit fault occurs, the discharge MOS tube is disconnected; When the vehicle is started, if the discharge wire is not disconnected, the battery management system BMS controls the display alarm module to warn the user after the discharge warning time is reached. When the discharge disconnection time is reached, the battery management system BMS directly disconnects the discharge MOS tube and the discharge ends. When charging, the charger is connected to the positive charging interface and the negative charging interface, and the battery management system BMS only closes the charging MOS tube.

7. The intelligent emergency starting power supply according to claim 6 is characterized in that: The self-test faults include acquisition faults, communication faults, overvoltage and undervoltage faults; the circuit fault types include overcharge faults, over-discharge faults, overcurrent faults, temperature alarm faults, and short circuit faults.

8. The intelligent emergency starting power supply according to claim 6 is characterized in that: The timing function is enabled by default, and you can cancel the timing function by pressing the function button.

Images