Battery manager

Abstract

The embodiment of the application discloses a battery manager. The battery manager comprises an auxiliary power supply control module, a battery voltage detection module, a system power supply control module, a central control module and a power module; the battery voltage detection module is used for detecting the battery voltage of the storage battery when the auxiliary power supply control module is self-locked; the central control module is used for controlling the system power supply control module to disconnect the connection with the negative pole of the whole vehicle system when the battery voltage is less than a first threshold value; or, the central control module is used for controlling the auxiliary power supply control module to be unlocked when the battery voltage is greater than a second threshold value; the auxiliary power supply control module is used for controlling the power module to stop supplying power to the system power supply control module when the auxiliary power supply control module is unlocked; and the system power supply control module is used for disconnecting the connection with the negative pole of the whole vehicle system after power-off. The scheme can monitor the battery storage battery in real time, and prevent the storage battery from overcharging or overdischarging.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the battery management technical field, in particular to a kind of battery managers. BACKGROUND

[0002] At present, electric two-wheeled vehicle and electric three-wheeled vehicle are one of the main traffic tools for people to travel short distances, and most of them use lead-acid batteries as the power source of the whole vehicle due to the cost consideration of electric two-wheeled vehicle and electric three-wheeled vehicle market.However, there is no corresponding battery management system for lead-acid batteries in the use of electric two-wheeled vehicle or electric three-wheeled vehicle.Obviously, the current market electric two-wheeled vehicle and electric three-wheeled vehicle will have the problem of overcharge and overdischarge of battery, and if the problem of overcharge and overdischarge of battery cannot be solved, electric two-wheeled vehicle and electric three-wheeled vehicle will have battery damage, even battery fire and other safety accidents. SUMMARY

[0003] The embodiment of the present application provides a kind of battery managers to carry out real-time monitoring to battery, prevent overcharge or overdischarge of battery.

[0004] The embodiment of the present application provides a kind of battery manager, which includes auxiliary power supply control module, battery voltage detection module, system power supply control module, central control module and power module;

[0005] The auxiliary power supply control module, the system power supply control module and the whole vehicle system negative pole are connected, the auxiliary power supply control module, the power module and the battery voltage detection module are connected, the power module, the auxiliary power supply control module, the battery voltage detection module and the system power supply control module are connected with the central control module, the auxiliary power supply control module is connected with the positive pole of battery, and the power module is connected with the system power supply control module;

[0006] The battery voltage detection module is used to detect the battery voltage of the battery when the auxiliary power supply control module is self-locked;The central control module is used to control the system power supply control module to disconnect with the negative pole of the whole vehicle system when the battery voltage is less than the first threshold value;Or, the central control module is used to control the auxiliary power supply control module to release self-locking when the battery voltage is greater than the second threshold value;The auxiliary power supply control module is used to control power module to stop supplying power to the system power supply control module when releasing self-locking;The system power supply control module is used to disconnect with the negative pole of the whole vehicle system after power off.

[0007] Optionally, the auxiliary power supply control module includes self-locking unit, self-locking release unit, current-limiting anti-reverse unit and self-locking wake-up unit;

[0008] The first end of the self-locking unit is connected with the positive pole of the storage battery, the second end of the self-locking unit, the power module, the battery voltage detection module and the third end of the self-locking unit are connected, the first end of the current-limiting anti-reverse unit is connected with the power door lock; the second end of the current-limiting anti-reverse unit, the fourth end of the self-locking unit and the first end of the self-locking release unit are connected, the second end of the self-locking release unit is connected with the central control module; the first end of the self-locking awakening unit is connected with the negative pole of the whole vehicle system, and the self-locking awakening unit is connected with the fifth end of the self-locking unit.

[0009] The self-locking unit is used for controlling the communication state between the positive pole of the storage battery and the power module; the self-locking release unit is used for controlling the self-locking unit to release self-locking, the current-limiting anti-reverse unit is used for limiting the current size and current flow direction between the power door lock and the self-locking unit, and the self-locking awakening unit is used for controlling the self-locking unit to restore self-locking.

[0010] Optionally, the self-locking unit comprises a first resistor, a first triode, a second resistor, a second triode, a first capacitor, a third resistor and a fourth resistor.

[0011] The first end of the first resistor and the emitter of the first triode are connected, the second end of the first resistor, the base of the first triode and the first end of the second resistor are connected, the second end of the second resistor, the self-locking awakening unit and the collector of the second triode are connected, the base of the second triode, the first pole of the first capacitor, the first end of the third resistor and the first end of the fourth resistor are connected, the emitter of the second triode, the second end of the first capacitor and the second end of the third resistor are grounded, and the second end of the fourth resistor is connected with the collector of the first triode.

[0012] Optionally, the self-locking release unit comprises a third triode, a fifth resistor and a sixth resistor.

[0013] The collector of the third triode, the current-limiting anti-reverse unit and the fourth end of the self-locking unit are connected, the base of the third triode, the first end of the fifth resistor and the first end of the sixth resistor are connected, the emitter of the third triode is grounded, the second end of the fifth resistor is grounded, and the second end of the sixth resistor is connected with the central control module.

[0014] Optionally, the current-limiting anti-reverse unit comprises a seventh resistor and a first diode.

[0015] The first end of the seventh resistor serves as the first end of the current-limiting anti-reverse unit, the second end of the seventh resistor is connected with the anode of the first diode, and the cathode of the first diode serves as the second end of the current-limiting anti-reverse unit.

[0016] Optionally, the self-locking wake-up unit comprises a ninth resistor and a second capacitor;

[0017] The first end of the ninth resistor and the first end of the second capacitor are connected and serve as the first end of the self-locking wake-up unit; the second end of the ninth resistor and the second end of the second capacitor are connected and serve as the second end of the self-locking wake-up unit.

[0018] Optionally, the battery manager further comprises a current detection module and a motor drive inverter module;

[0019] The motor drive inverter module, the positive electrode of the storage battery and the first end of the vehicle charging socket are connected; the motor drive inverter module is connected with the current detection module; the current detection module and the negative electrode of the storage battery are grounded; the current detection module is connected with the system power supply control module; the negative electrode of the vehicle system is connected with the second end of the vehicle charging socket; the current detection module and the motor drive inverter module are both connected with the central control module.

[0020] The current detection module is used to detect the bus current of the motor drive inverter module or the charging current of the storage battery; the central control module is used to adjust the bus current output by the motor drive inverter module according to the bus current; and the central control module is further used to calculate the power of the storage battery according to the bus current and the charging current.

[0021] Optionally, the current detection module comprises a charging sampling unit, a discharging sampling unit, a first amplification unit and a second amplification unit.

[0022] The first end of the discharging sampling unit is connected with the first end of the first amplification unit; the second end of the discharging sampling unit, the negative electrode of the storage battery, the second end of the first amplification unit, the first end of the charging sampling unit and the first end of the second amplification unit are grounded; the second end of the charging sampling unit and the second end of the second amplification unit are connected; and the third end of the first amplification unit and the third end of the second amplification unit are both connected with the central control module.

[0023] Optionally, the system power supply control module comprises a charging control unit and a discharging control unit.

[0024] The first end of the charging control unit is connected with the negative electrode of the vehicle system; the second end of the charging control unit is connected with the first end of the discharging control unit; the second end of the discharging control unit is connected with the current detection module; and the third end of the charging control unit and the third end of the discharging control unit are both connected with the central control module.

[0025] The central control module is configured to control the on-off state between the charging control unit or the discharging control unit and the negative electrode of the whole vehicle system.

[0026] Optionally, the charging control unit comprises a first isolation drive and a charging MOS tube, and the discharging control unit comprises a second isolation drive and a discharging MOS tube.

[0027] The first end of the first isolation drive, the first electrode of the charging MOS tube, and the negative electrode of the whole vehicle system are connected, the second end of the first isolation drive is connected with the control end of the charging MOS tube, the second electrode of the charging MOS tube is connected with the first electrode of the discharging MOS tube, the first end of the second isolation drive is connected with the first electrode of the discharging MOS tube, the second end of the second isolation drive, the second electrode of the discharging MOS tube, and the current detection module are connected, and the third end of the first isolation drive and the third end of the second isolation drive are connected with the central control module.

[0028] Optionally, the battery manager further comprises a charging detection module and a communication module.

[0029] The charging detection module is connected with the third end of the whole vehicle charging socket, the communication module is connected with the fourth end of the whole vehicle charging socket, the communication module is connected with the whole vehicle instrument, and the charging detection module and the communication module are connected with the central control module.

[0030] The charging detection module is configured to obtain a charging detection signal, the communication module is configured to provide an information interaction channel between the fourth end of the whole vehicle charging socket and the whole vehicle instrument and the central control module, and the central control module is configured to determine the charging and discharging state of the storage battery according to the charging detection signal.

[0031] Optionally, the charging detection module comprises a tenth resistor, a second diode, an eleventh resistor, and a twelfth resistor.

[0032] The first end of the tenth resistor, the third end of the whole vehicle charging socket, and the cathode of the second diode are connected, the second end of the tenth resistor is grounded, the anode of the second diode, the first end of the eleventh resistor, and the first end of the twelfth resistor are connected, the second end of the eleventh resistor is connected with a fixed potential, and the second end of the twelfth resistor is connected with the central control module.

[0033] Optionally, the battery manager further comprises an external power supply output control module and a battery temperature detection module.

[0034] The power module, the external device of the whole vehicle and the central control module are connected with the external power output control module, the battery temperature detection module and the central control module are connected;

[0035] The central control module is used for sending a power supply signal to the external power output control module, the external power output control module is used for outputting the electric energy output by the power module to the external device of the whole vehicle according to the power supply signal, and the battery temperature detection module is used for acquiring a temperature signal of the storage battery, and the central control module is used for determining the temperature of the storage battery according to the temperature signal.

[0036] The battery manager provided by the embodiment of the application can detect the battery voltage of the storage battery when the auxiliary power control module is self-locked through the battery voltage detection module, and the central control module controls the coordinated work among the power module, the auxiliary power control module, the battery voltage detection module and the system power supply control module, that is, the central control module can control the system power supply control module to disconnect the connection with the negative electrode of the whole vehicle system when the battery voltage is less than a first threshold value, so as to prevent the storage battery from being in an over-discharge state, or the central control module controls the auxiliary power control module to release the self-locking when the battery voltage is greater than a second threshold value, so that the auxiliary power control module controls the power module to stop supplying power to the system power supply control module when the self-locking is released, and the system power supply control module disconnects the connection with the negative electrode of the whole vehicle system after being powered off, and then the external power source cannot be connected with the storage battery through the negative electrode of the whole vehicle system, so as to prevent the storage battery from being in an over-charge state. Therefore, the battery storage battery can be monitored in real time, and the over-charge or over-discharge of the storage battery can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0038] Figure 1 A structural schematic diagram of a battery manager provided by the embodiment of the application;

[0039] Figure 2 A structural schematic diagram of another battery manager provided by the embodiment of the application;

[0040] Figure 3 A structural schematic diagram of another battery manager provided by the embodiment of the application;

[0041] Figure 4 A structural schematic diagram of another battery manager provided by the embodiment of the application;

[0042] Figure 5 A structure schematic view of an auxiliary power supply control module provided by an embodiment of the present application is shown in FIG. 1.

[0043] Figure 6 A structure schematic view of another auxiliary power supply control module provided by an embodiment of the present application is shown in FIG. 2.

[0044] Figure 7 A structure schematic view of a charging detection module provided by an embodiment of the present application is shown in FIG. 3.

[0045] Figure 8 A structure schematic view of a current detection module provided by an embodiment of the present application is shown in FIG. 4.

[0046] Figure 9 A structure schematic view of another current detection module provided by an embodiment of the present application is shown in FIG. 5.

[0047] Figure 10 A structure schematic view of a system power supply control module provided by an embodiment of the present application is shown in FIG. 6.

[0048] Figure 11 A structure schematic view of another system power supply control module provided by an embodiment of the present application is shown in FIG. 7. DETAILED DESCRIPTION

[0049] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the art without creative labor should belong to the scope of protection of the present application.

[0050] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0051] The embodiment of the present application also provides a battery manager, Figure 1A structural schematic diagram of a battery manager provided by an embodiment of the present application is shown in Figure 1 The battery manager includes an auxiliary power supply control module 100, a battery voltage detection module 200, a system power supply control module 300, a central control module 400, and a power module 500.

[0052] The auxiliary power supply control module 100, the system power supply control module 300, and the whole vehicle system negative pole 01 are connected, the auxiliary power supply control module 100, the power module 500, and the battery voltage detection module 200 are connected, the power module 500, the auxiliary power supply control module 100, the battery voltage detection module 200, and the system power supply control module 300 are all connected with the central control module 400, the auxiliary power supply control module 100 is connected with the positive pole of the storage battery 02, and the power module 500 is connected with the system power supply control module 300.

[0053] The battery voltage detection module 200 is used to detect the battery voltage of the storage battery 02 when the auxiliary power supply control module 100 is self-locked; the central control module 400 is used to control the system power supply control module 300 to disconnect with the whole vehicle system negative pole 01 when the battery voltage is less than a first threshold value; or, the central control module 400 is used to control the auxiliary power supply control module 100 to be unlocked when the battery voltage is greater than a second threshold value; the auxiliary power supply control module 100 is used to control the power module 500 to stop supplying power to the system power supply control module 300 when being unlocked; and the system power supply control module 300 is used to disconnect with the whole vehicle system negative pole 01 after being powered off.

[0054] The battery 02 can be a lead-acid battery. The auxiliary power supply control module 100 can control the connection relationship between the battery 02 and the power module 500. For example, the auxiliary power supply control module 100 self-locking can make the battery 02 and the power module 500 in communication; the auxiliary power supply control module 100 unlocking can make the battery 02 and the power module 500 disconnected. The battery voltage detection module 200 can detect the battery voltage of the battery 02 in real time when the battery 02 and the power module 500 are in communication, so as to prevent the battery 02 from overcharging or overdischarging, thereby improving the safety and service life of the battery 02. The system power supply control module 300 can control the conduction state between the vehicle system negative electrode 01 and the battery 02, and can also control the external power supply through the conduction state between the vehicle system negative electrode 01 and the battery 02, thereby controlling the charging and discharging of the battery 02. For example, when the vehicle system and the battery 02 are connected and conductive, the battery 02 is in a discharging state, at this time the battery 02 supplies power to the vehicle system, once the voltage of the battery 02 is too low, the system power supply control module 300 can quickly disconnect the connection between the vehicle system negative electrode 01 and the battery 02, so as to prevent the battery 02 from being in an overdischarged state. When the external power supply and the battery 02 are connected and conductive, the battery 02 is in a charging state, at this time the external power supply charges the battery 02, once the voltage of the battery 02 is too high, the system power supply control module 300 can quickly disconnect the connection between the external power supply and the battery 02 through the vehicle system negative electrode 01, so as to prevent the battery 02 from being in an overcharged state. The central control module 400 is the control center, which can control the power module 500, the auxiliary power supply control module 100, the battery voltage detection module 200 and the system power supply control module 300, so that the power module 500, the auxiliary power supply control module 100, the battery voltage detection module 200 and the system power supply control module 300 can work in coordination to prevent the battery 02 from overcharging or overdischarging. The power module 500 can provide appropriate voltage power for the modules connected thereto, so that each module can work normally under its rated voltage.

[0055] According to the connection relationship between the various modules included in the battery manager, the working process of the battery manager is as follows: when the auxiliary power supply control module 100 is self-locked, at this time the storage battery 02 is in communication with the power module 500, the battery voltage detection module 200 detects the battery voltage of the storage battery 02 in real time, and sends the battery voltage of the storage battery 02 to the central control module 400. The central control module 400 will judge the received battery voltage, if the central control module 400 judges that the battery voltage is less than the first threshold value, the central control module 400 will control the system power supply control module 300 to disconnect with the negative pole 01 of the whole vehicle system, so as to prevent the storage battery 02 from being in over-discharge state. If the central control module 400 judges that the battery voltage is greater than the second threshold value, the central control module 400 will control the auxiliary power supply control module 100 to release the self-locking, and the auxiliary power supply control module 100 will control the power module 500 to stop supplying power to the system power supply control module 300 when the self-locking is released. The system power supply control module 300 will disconnect the storage battery 02 and the negative pole 01 of the whole vehicle system when the power is off, that is, disconnect the external power supply and the storage battery 02, so as to prevent the storage battery 02 from being in overcharge state.

[0056] The battery manager provided by the embodiment of the application can detect the battery voltage of the storage battery 02 when the auxiliary power supply control module 100 is self-locked through the battery voltage detection module 200; the central control module 400 controls the coordinated work among the power module 500, the auxiliary power supply control module 100, the battery voltage detection module 200 and the system power supply control module 300, that is, the central control module 400 can control the system power supply control module 300 to disconnect with the negative pole 01 of the whole vehicle system when the battery voltage is less than the first threshold value, so as to prevent the storage battery 02 from being in over-discharge state; or, the central control module 400 controls the auxiliary power supply control module 100 to release the self-locking when the battery voltage is greater than the second threshold value, so that the auxiliary power supply control module 100 controls the power module 500 to stop supplying power to the system power supply control module 300 when the self-locking is released, and the system power supply control module 300 disconnects with the negative pole 01 of the whole vehicle system after the power is off, so that the external power supply cannot be in communication with the storage battery 02 through the negative pole 01 of the whole vehicle system, so as to prevent the storage battery 02 from being in overcharge state. Therefore, the present application can monitor the storage battery 02 in real time, and prevent the storage battery 02 from being overcharged or over-discharged.

[0057] Optionally, with reference to Figure 1 , the auxiliary power supply control module 100 is connected with the electric door lock 03, and the electric door lock 03 can control the self-locking of the auxiliary power supply control module 100. When the auxiliary power supply control module 100 receives the signal sent by the electric door lock 03, the auxiliary power supply control module 100 can be self-locked.

[0058] Figure 2 Another structure schematic diagram of the battery manager provided by the embodiment of the application is as follows:Figure 2 As shown, the battery manager further comprises a current detection module 600 and a motor drive inverter module 700;

[0059] The motor drive inverter module 700, the positive pole of the battery 02 and the first end A of the vehicle charging socket 04 are connected, the motor drive inverter module 700 is connected with the current detection module 600, the current detection module 600 and the negative pole of the battery 02 are grounded, the current detection module 600 is connected with the system power supply control module 300, the negative pole 01 of the vehicle system is connected with the second end B of the vehicle charging socket 04, and the current detection module 600 and the motor drive inverter module 700 are both connected with the central control module 400;

[0060] The current detection module 600 is used for detecting the bus current of the motor drive inverter module 700 or the charging current of the battery 02, the central control module 400 is used for adjusting the bus current output by the motor drive inverter module 700 according to the bus current; and the central control module 400 is further used for calculating the power of the battery 02 according to the bus current and the charging current.

[0061] Specifically, the motor drive inverter module 700 can invert the direct current output by the battery 02 into alternating current, so as to drive the motor to run. The current detection module 600 can detect the discharge current of the battery 02, that is, the bus current output by the motor drive inverter module 700. When the battery 02 is charged, the first end A of the vehicle charging socket 04 is connected with the positive pole of the battery 02, and the second end B of the vehicle charging socket 04 is connected with the negative pole of the battery 02 through the system power supply control module 300 and the current detection module 600. Therefore, when the vehicle charging socket 04 is connected with an external power supply, the current detection module 600 can detect the charging current of the battery 02. After detecting the bus current of the motor drive inverter module 700 and the charging current of the battery 02, the current detection module 600 sends the bus current of the motor drive inverter module 700 and the charging current of the battery 02 to the central control module 400. The central control module 400 can adjust the bus current output by the motor drive inverter module 700 according to the bus current, so as to adjust the speed of the motor. In addition, the central control module 400 can also calculate the power of the battery 02 according to the bus current and the charging current.

[0062] Figure 3 Another structure schematic diagram of a battery manager provided by the embodiment of the present application is shown in FIG. 2. Figure 3As shown, the battery manager further comprises a charging detection module 810 and a communication module 820; the charging detection module 810 is connected with the third end C of the vehicle charging socket 04, the communication module 820 is connected with the fourth end D of the vehicle charging socket 04, the communication module 820 is connected with the vehicle instrument 05, and the charging detection module 810 and the communication module 820 are both connected with the central control module 400; the charging detection module 810 is used for obtaining a charging detection signal, the communication module 820 is used for providing an information interaction channel between the fourth end D of the vehicle charging socket 04 and the vehicle instrument 05 and the central control module 400, and the central control module 400 is used for judging the charging and discharging state of the storage battery 02 according to the charging detection signal.

[0063] Specifically, the charging detection module 810 can detect the connection state of the vehicle charging socket 04, and the charging detection module 810 can obtain a charging detection signal from the third end C of the vehicle charging socket 04. For example, when the vehicle charging socket 04 is connected with an external power supply, the charging detection module 810 detects the voltage of the third end C of the vehicle charging socket 04, thereby obtaining a charging detection signal, and sends the obtained charging detection signal to the central control module 400, at this time, the central control module 400 can judge that the storage battery 02 is in a charging state according to the charging detection signal. When the vehicle charging socket 04 is not connected with an external power supply, the charging detection module 810 detects the voltage of the third end C of the vehicle charging socket 04, thereby obtaining a charging detection signal, and sends the obtained charging detection signal to the central control module 400, at this time, the central control module 400 can judge that the storage battery 02 is in a discharging state according to the charging detection signal. Wherein, the voltage of the charging detection signal sent to the central control module 400 is different when the storage battery 02 is in a charging state and when the storage battery 02 is in a discharging state.

[0064] In addition, the communication module 820 is a communication bridge for the vehicle instrument 05 and the central control module 400, and the two can interact information through the communication module 820. The communication module 820 is also a communication bridge for the vehicle charging socket 04 and the central control module 400, and the central control module 400 can interact information with the vehicle charging socket 04 through the communication module 820.

[0065] Figure 4 Another structure schematic diagram of a battery manager provided by the embodiment of the present application is shown in FIG. 4. Figure 4As shown, the battery manager further comprises an external power output control module 830 and a battery temperature detection module 840; the power module 500, the whole vehicle external device 06 and the central control module 400 are connected with the external power output control module 830, and the battery temperature detection module 840 is connected with the central control module 400; the central control module 400 is used for sending a power supply signal to the external power output control module 830, and the external power output control module 830 is used for outputting the electric energy output by the power module 500 to the whole vehicle external device 06 according to the power supply signal; the battery temperature detection module 840 is used for obtaining a temperature signal of the storage battery 02, and the central control module 400 is used for determining the temperature of the storage battery 02 according to the temperature signal.

[0066] The external power output control module 830 can supply power to the whole vehicle external device 06. Specifically, the central control module 400 sends a power supply signal to the external power output control module 830, and the external power output control module 830 outputs the electric energy output by the power module 500 to the whole vehicle external device 06 according to the power supply signal. The battery temperature detection module 840 is arranged near or in contact with the storage battery 02, and the battery temperature detection module 840 can convert thermal energy into a temperature signal and send it to the central control module 400. After obtaining the temperature signal, the central control module 400 can determine the temperature of the storage battery 02 according to the temperature signal, so as to monitor the charging and discharging of the storage battery 02 within the normal temperature range, and to ensure the safe operation of the storage battery 02.

[0067] Figure 5 A structure schematic diagram of an auxiliary power control module provided by the embodiment of the application is shown in Figure 5 As shown, the auxiliary power control module 100 comprises a self-locking unit 110, a self-locking release unit 120, a current-limiting anti-reverse unit 130 and a self-locking wake-up unit 140; a first end of the self-locking unit 110 is connected with the positive electrode of the storage battery 02, a second end of the self-locking unit 110, the power module 500, the battery voltage detection module 200 and a third end of the self-locking unit 110 are connected, a first end of the current-limiting anti-reverse unit 130 is connected with the electric door lock 03; a second end of the current-limiting anti-reverse unit 130, a fourth end of the self-locking unit 110 and a first end of the self-locking release unit 120 are connected, a second end of the self-locking release unit 120 is connected with the central control module 400; a first end of the self-locking wake-up unit 140 is connected with the negative electrode 01 of the whole vehicle system, and the self-locking wake-up unit 140 is connected with a fifth end of the self-locking unit 110; the self-locking unit 110 is used for controlling the communication state between the positive electrode of the storage battery 02 and the power module 500; the self-locking release unit 120 is used for controlling the self-locking unit 110 to release the self-locking, the current-limiting anti-reverse unit 130 is used for limiting the current size and current direction between the electric door lock 03 and the self-locking unit 110, and the self-locking wake-up unit 140 is used for controlling the self-locking unit 110 to restore the self-locking.

[0068] Wherein, the self-locking unit 110 is a switch between the positive pole of the battery 02 and the power module 500, for example, the self-locking unit 110 can be self-locked to make the positive pole of the battery 02 and the power module 500 in communication, and the self-locking unit 110 can be unlocked to make the positive pole of the battery 02 and the power module 500 disconnected. The self-locking unlocking unit 120 can control the self-locking unit 110 to be unlocked, that is, to make the positive pole of the battery 02 and the power module 500 disconnected. When the door lock 03 sends a signal to the self-locking unit 110, the current limiting and reverse prevention unit 130 is used to limit the current size and current direction between the door lock 03 and the self-locking unit 110, so as to ensure the signal transmission direction between the door lock 03 and the self-locking unit 110, thereby protecting the self-locking unit 110 from being burned out due to excessive current output by the door lock 03. When the vehicle charging socket 04 is connected with an external power source, the negative pole 01 of the vehicle system and the third end C of the vehicle charging socket 04 are short-circuited, so as to make the self-locking unit 110 self-locked.

[0069] Figure 6 Another auxiliary power control module structure schematic diagram provided by the embodiment of the application is shown in FIG. 3. Figure 6 As shown in FIG. 3, the self-locking unit 110 includes a first resistor R1, a first triode T1, a second resistor R2, a second triode T2, a first capacitor C1, a third resistor R3 and a fourth resistor R4; the first end of the first resistor R1 and the emitter of the first triode T1 are connected, the second end of the first resistor R1, the base of the first triode T1 and the first end of the second resistor R2 are connected, the second end of the second resistor R2, the self-locking wake-up unit 140 and the collector of the second triode T2 are connected, the base of the second triode T2, the first pole of the first capacitor C1, the first end of the third resistor R3 and the first end of the fourth resistor R4 are connected, the emitter of the second triode T2, the second end of the first capacitor C1 and the second end of the third resistor R3 are grounded, and the second end of the fourth resistor R4 and the collector of the first triode T1 are connected.

[0070] The self-locking unlocking unit 120 includes a third triode T3, a fifth resistor R5 and a sixth resistor R6; the collector of the third triode T3, the current limiting and reverse prevention unit 130 and the fourth end of the self-locking unit 110 are connected, the base of the third triode T3, the first end of the fifth resistor R5 and the first end of the sixth resistor R6 are connected, the emitter of the third triode T3 is grounded, the second end of the fifth resistor R5 is grounded, and the second end of the sixth resistor R6 is connected with the central control module 400.

[0071] The current-limiting anti-reverse unit 130 comprises a seventh resistor R7 and a first diode D1; the first end of the seventh resistor R7 is the first end of the current-limiting anti-reverse unit 130, the second end of the seventh resistor R7 is connected with the anode of the first diode D1, and the cathode of the first diode D1 is the second end of the current-limiting anti-reverse unit 130.

[0072] The self-locking wake-up unit 140 comprises a ninth resistor R9 and a second capacitor C2; the first end of the ninth resistor R9 and the first end of the second capacitor C2 are connected and serve as the first end of the self-locking wake-up unit 140; the second end of the ninth resistor R9 and the second end of the second capacitor C2 are connected and serve as the second end of the self-locking wake-up unit 140.

[0073] According to the above connection relationship, the working process of the auxiliary power supply control module 100 is further described: after the whole vehicle system is powered off, the power supply of the storage battery 02 to the whole vehicle system can be restored by two ways of opening the door lock 03 and connecting the whole vehicle charging plug with the external power supply. Exemplarily, if the door lock 03 is opened, the voltage of the storage battery 02 will be added to the base of the second triode T2 through the door lock 03, the seventh resistor R7 and the first diode D1, so that the second triode T2 and the first triode T1 are turned on, thereby making the storage battery 02 and the power module 500 connected, and the power supply of the storage battery 02 to the whole vehicle system is restored. If the whole vehicle charging plug is connected with the external power supply, the negative pole 01 of the whole vehicle system is short-circuited with the third end C of the whole vehicle charging socket 04, the first triode T1 base, the second resistor R2, the second capacitor C2, the negative pole 01 of the whole vehicle system, the whole vehicle charging socket 04 and the charging detection module 810 form a loop, and the second capacitor C2 is charged (the ninth resistor R9 is the discharge resistor of the second capacitor C2) to make the first triode T1 and the second triode T3 turned on to form self-locking, thereby making the storage battery 02 and the power module 500 connected, and the power supply of the storage battery 02 to the whole vehicle system is restored.

[0074] Figure 7 A structure diagram of a charging detection module provided by the embodiment of the present application is shown in Figure 7 As shown, the charging detection module 810 comprises a tenth resistor R10, a second diode D2, an eleventh resistor R11 and a twelfth resistor R12; the first end of the tenth resistor R10, the third end C of the whole vehicle charging socket 04 and the cathode of the second diode D2 are connected, the second end of the tenth resistor R10 is grounded, the anode of the second diode D2, the first end of the eleventh resistor R11 and the first end of the twelfth resistor R12 are connected, the second end of the eleventh resistor R11 is connected with a fixed potential, and the second end of the twelfth resistor R12 is connected with the central control module 400.

[0075] Continuing to refer to Figure 6 and Figure 7If the vehicle charging plug is connected with the external power supply, the negative pole 01 of the vehicle system is short-circuited with the third end C of the vehicle charging socket 04, the first triode T1 base, the second resistor R2, the second capacitor C2, the negative pole 01 of the vehicle system, the vehicle charging socket 04 and the tenth resistor R10 form a loop, the second capacitor C2 charges (the ninth resistor R9 is the discharge resistor of the second capacitor C2) and makes the first triode T1 and the second triode T2 conductive to form a self-locking, so as to make the battery 02 and the power module 500 communicate, thereby restoring the power supply of the battery 02 to the vehicle system.

[0076] Figure 8 A structure diagram of a current detection module provided by the embodiment of the application is shown in FIG. 6. Figure 8 As shown in FIG. 6, the current detection module 600 includes a charging sampling unit 610, a discharging sampling unit 620, a first amplification unit 630 and a second amplification unit 640; the first end of the discharging sampling unit 620 is connected with the first end of the first amplification unit 630, the second end of the discharging sampling unit 620, the negative pole of the battery 02, the second end of the first amplification unit 630, the first end of the charging sampling unit 610 and the first end of the second amplification unit 640 are grounded, the second end of the charging sampling unit 610 and the second end of the second amplification unit 640 are connected, and the third end of the first amplification unit 630 and the third end of the second amplification unit 640 are connected with the central control module 400.

[0077] The charging sampling unit 610 can collect the size of the charging current of the battery 02, and the second amplifier can amplify the charging current. The discharging sampling unit 620 can collect the size of the discharging current (bus current output by the motor drive inverter module 700) of the battery 02, and the first amplifier can amplify the discharging current of the battery 02. The central control module 400 can adjust the bus current output by the motor drive inverter module 700 according to the amplified bus current, so as to adjust the size of the motor speed. In addition, the central control module 400 can also calculate the power of the battery 02 according to the amplified bus current and the amplified charging current.

[0078] Figure 9 A structure diagram of another current detection module provided by the embodiment of the application is shown in FIG. 7. Figure 9As shown, the discharge sampling unit 620 includes a thirteenth resistor R13; the first amplification unit 630 includes a fourteenth resistor R14, a fifteenth resistor R15, a first operational amplifier M1 and a sixteenth resistor R16; the charge sampling unit 610 includes a seventeenth resistor R17; the second amplification unit 640 includes an eighteenth resistor R18, a nineteenth resistor R19, a second operational amplifier M2 and a twentieth resistor R20. The first end of the thirteenth resistor R13 is connected with the first end of the fourteenth resistor R14, and the second end of the fourteenth resistor R14 is connected with the first end of the first operational amplifier M1. The second end of the thirteenth resistor R13, the first end of the fifteenth resistor R15, the first end of the seventeenth resistor R17, the first end of the eighteenth resistor R18 and the negative electrode of the battery 02 are grounded. The second end of the fifteenth resistor R15, the second end of the first operational amplifier M1 and the first end of the sixteenth resistor R16 are connected, and the second end of the sixteenth resistor R16, the third end of the first operational amplifier M1 and the central control module 400 are connected. The second end of the eighteenth resistor R18 is connected with the first end of the second operational amplifier M2, the second end of the seventeenth resistor R17 is connected with the first end of the nineteenth resistor R19, the second end of the nineteenth resistor R19, the second end of the second operational amplifier M2 and the first end of the twentieth resistor R20 are connected, and the second end of the twentieth resistor R20, the third end of the second operational amplifier M2 and the central control module 400 are connected.

[0079] Figure 10 A structural schematic diagram of a system power supply control module provided by an embodiment of the present application is shown in FIG. 3. Figure 10 As shown, the system power supply control module 300 includes a charge control unit 310 and a discharge control unit 320; the first end of the charge control unit 310 is connected with the negative electrode 01 of the whole vehicle system, the second end of the charge control unit 310 is connected with the first end of the discharge control unit 320, the second end of the discharge control unit 320 is connected with the current detection module 600, and the third end of the charge control unit 310 and the third end of the discharge control unit 320 are both connected with the central control module 400; the central control module 400 is used to control the conduction state between the charge control unit 310 or the discharge control unit 320 and the negative electrode 01 of the whole vehicle system.

[0080] Wherein, when the battery 02 is charging, the central control module 400 can control the charge control unit 310 to quickly disconnect the connection between the charge control unit 310 and the negative electrode 01 of the whole vehicle system, so as to prevent the battery 02 from being in an overcharged state. When the battery 02 is discharging, the central control module 400 can quickly control the discharge control unit 320 to disconnect the connection between the discharge control unit 320 and the negative electrode 01 of the whole vehicle system, so as to prevent the battery 02 from being in an overdischarged state.

[0081] Figure 11 Another structural schematic diagram of a system power supply control module provided by an embodiment of the present application is shown in FIG. 4.Figure 11 As shown, the charging control unit 310 includes a first isolation drive 311 and a charging MOS tube Q1, and the discharging control unit 320 includes a second isolation drive 321 and a discharging MOS tube Q2; the first end of the first isolation drive 311 and the first pole of the charging MOS tube Q1 and the negative pole 01 of the whole vehicle system are connected, the second end of the first isolation drive 311 and the control end of the charging MOS tube Q1 are connected, the second pole of the charging MOS tube Q1 and the first pole of the discharging MOS tube Q2 are connected, the first end of the second isolation drive 321 and the first pole of the discharging MOS tube Q2 are connected, the second end of the second isolation drive 321, the second pole of the discharging MOS tube Q2 and the current detection module 600 are connected, and the third end of the first isolation drive 311 and the third end of the second isolation drive 321 are connected with the central control module 400.

[0082] Exemplarily, when the battery 02 is charged, the central control module 400 can send a first control signal to the first isolation drive 311, and the first isolation drive 311 controls the charging MOS tube Q1 to quickly disconnect the connection between the charging MOS tube Q1 and the negative pole 01 of the whole vehicle system according to the first control signal, so as to prevent the battery 02 from being in an overcharged state. When the battery 02 is discharged, the central control module 400 can send a second control signal to the second isolation drive 321, and the second isolation drive 321 controls the discharging MOS tube Q2 to quickly disconnect the connection between the discharging MOS tube Q2 and the negative pole 01 of the whole vehicle system according to the first control signal, so as to prevent the battery 02 from being in an overdischarged state.

[0083] It should be understood that various forms of flow shown above can be used to reorder, add or delete steps. For example, each step described in the present application can be executed in parallel, sequentially or in different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0084] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A battery manager, characterized in that, It includes an auxiliary power control module, a battery voltage detection module, a system power supply control module, a central control module, and a power supply module; The auxiliary power control module, the system power supply control module, and the vehicle system negative terminal are connected. The auxiliary power control module, the power module, and the battery voltage detection module are connected. The power module, the auxiliary power control module, the battery voltage detection module, and the system power supply control module are all connected to the central control module. The auxiliary power control module is connected to the positive terminal of the battery. The power module is connected to the system power supply control module. The battery voltage detection module is used to detect the battery voltage of the storage battery when the auxiliary power control module self-locks; the central control module is used to control the system power supply control module to disconnect from the negative terminal of the vehicle system when the battery voltage is less than a first threshold; the central control module is used to control the auxiliary power control module to release the self-lock when the battery voltage is greater than a second threshold; the auxiliary power control module is used to control the power module to stop supplying power to the system power supply control module when the self-lock is released; the system power supply control module is used to disconnect from the negative terminal of the vehicle system after power failure; The battery manager also includes a current detection module and a motor drive inverter module; The motor drive inverter module, the positive terminal of the battery, and the first end of the vehicle charging socket are connected. The motor drive inverter module is connected to the current detection module. The current detection module and the negative terminal of the battery share a common ground. The current detection module is connected to the system power supply control module. The negative terminal of the vehicle system is connected to the second end of the vehicle charging socket. Both the current detection module and the motor drive inverter module are connected to the central control module. The current detection module is used to detect the bus current of the motor drive inverter module or the charging current of the battery. The central control module is used to adjust the bus current output by the motor drive inverter module according to the bus current. The central control module is also used to calculate the battery capacity according to the bus current and the charging current. The auxiliary power control module includes a self-locking unit, a self-locking release unit, a current limiting and reverse protection unit, and a self-locking wake-up unit. The first end of the self-locking unit is connected to the positive terminal of the battery; the second end of the self-locking unit, the power module, the battery voltage detection module, and the third end of the self-locking unit are connected; the first end of the current limiting and anti-reverse unit is connected to the ignition switch; the second end of the current limiting and anti-reverse unit, the fourth end of the self-locking unit, and the first end of the self-lock release unit are connected; the second end of the self-lock release unit is connected to the central control module; the first end of the self-lock wake-up unit is connected to the negative terminal of the vehicle system; and the self-lock wake-up unit is connected to the fifth end of the self-locking unit. The self-locking unit is used to control the connection state between the positive terminal of the battery and the power module; the self-lock release unit is used to control the self-locking unit to release the self-lock; the current limiting and anti-reverse unit is used to limit the current magnitude and current flow direction between the ignition switch and the self-locking unit; and the self-lock wake-up unit is used to control the self-locking unit to restore the self-lock. The self-locking wake-up unit includes a ninth resistor and a second capacitor; The first end of the ninth resistor is connected to the first end of the second capacitor and serves as the first end of the self-locking wake-up unit; the second end of the ninth resistor is connected to the second end of the second capacitor and serves as the second end of the self-locking wake-up unit.

2. The battery manager according to claim 1, characterized in that, The self-locking unit includes a first resistor, a first transistor, a second resistor, a second transistor, a first capacitor, a third resistor, and a fourth resistor; The first end of the first resistor is connected to the emitter of the first transistor. The second end of the first resistor, the base of the first transistor, and the first end of the second resistor are connected. The second end of the second resistor, the self-locking wake-up unit, and the collector of the second transistor are connected. The base of the second transistor, the first terminal of the first capacitor, the first end of the third resistor, and the first end of the fourth resistor are connected. The emitter of the second transistor, the second end of the first capacitor, and the second end of the third resistor are grounded. The second end of the fourth resistor is connected to the collector of the first transistor.

3. The battery manager according to claim 1, characterized in that, The self-locking release unit includes a third transistor, a fifth resistor, and a sixth resistor; The collector of the third transistor, the current limiting and anti-reverse unit, and the fourth terminal of the self-locking unit are connected. The base of the third transistor, the first terminal of the fifth resistor, and the first terminal of the sixth resistor are connected. The emitter of the third transistor is grounded. The second terminal of the fifth resistor is grounded. The second terminal of the sixth resistor is connected to the central control module.

4. The battery manager according to claim 1, characterized in that, The current-limiting anti-reverse unit includes a seventh resistor and a first diode; The first end of the seventh resistor serves as the first end of the current limiting and anti-reverse unit, the second end of the seventh resistor is connected to the anode of the first diode, and the cathode of the first diode serves as the second end of the current limiting and anti-reverse unit.

5. The battery manager according to claim 1, characterized in that, The current detection module includes a charging sampling unit, a discharging sampling unit, a first amplification unit, and a second amplification unit; The first end of the discharge sampling unit is connected to the first end of the first amplification unit. The second end of the discharge sampling unit, the negative terminal of the battery, the second end of the first amplification unit, the first end of the charging sampling unit, and the first end of the second amplification unit are all grounded. The second end of the charging sampling unit and the second end of the second amplification unit are connected. The third end of the first amplification unit and the third end of the second amplification unit are both connected to the central control module.

6. The battery manager according to claim 1, characterized in that, The system power supply control module includes a charging control unit and a discharging control unit; The first terminal of the charging control unit is connected to the negative terminal of the vehicle system, the second terminal of the charging control unit is connected to the first terminal of the discharging control unit, the second terminal of the discharging control unit is connected to the current detection module, and the third terminals of the charging control unit and the discharging control unit are both connected to the central control module. The central control module is used to control the conduction state between the charging control unit or the discharging control unit and the negative terminal of the vehicle system.

7. The battery manager according to claim 6, characterized in that, The charging control unit includes a first isolation driver and a charging MOSFET, and the discharging control unit includes a second isolation driver and a discharging MOSFET. The first terminal of the first isolation driver is connected to the first electrode of the charging MOSFET and the negative terminal of the vehicle system. The second terminal of the first isolation driver is connected to the control terminal of the charging MOSFET. The second electrode of the charging MOSFET is connected to the first electrode of the discharging MOSFET. The first terminal of the second isolation driver is connected to the first electrode of the discharging MOSFET. The second terminal of the second isolation driver, the second electrode of the discharging MOSFET, and the current detection module are connected. The third terminals of the first isolation driver and the second isolation driver are both connected to the central control module.

8. The battery manager according to claim 1, characterized in that, It also includes a charging detection module and a communication module; The charging detection module is connected to the third end of the vehicle charging socket, the communication module is connected to the fourth end of the vehicle charging socket, the communication module is connected to the vehicle instrument panel, and both the charging detection module and the communication module are connected to the central control module. The charging detection module is used to acquire charging detection signals, the communication module is used to provide information interaction channels between the fourth terminal of the vehicle charging socket and the vehicle instrument panel and the central control module, respectively, and the central control module is used to determine the charging and discharging status of the battery based on the charging detection signals.

9. The battery manager according to claim 8, characterized in that, The charging detection module includes a tenth resistor, a second diode, an eleventh resistor, and a twelfth resistor; The first end of the tenth resistor, the third end of the vehicle charging socket, and the cathode of the second diode are connected. The second end of the tenth resistor is grounded. The anode of the second diode, the first end of the eleventh resistor, and the first end of the twelfth resistor are connected. The second end of the eleventh resistor is connected to a fixed potential. The second end of the twelfth resistor is connected to the central control module.

10. The battery manager according to claim 1, characterized in that, It also includes an external power output control module and a battery temperature detection module; The power module, vehicle external components, and central control module are all connected to the external power output control module, and the battery temperature detection module is connected to the central control module. The central control module is used to send a power supply signal to the external power output control module, and the external power output control module is used to output the electrical energy output by the power module to the external devices of the vehicle according to the power supply signal; the battery temperature detection module is used to acquire the temperature signal of the battery, and the central control module is used to determine the temperature of the battery according to the temperature signal.

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