CN211641910U - Battery management system suitable for electric bicycle - Google Patents

Battery management system suitable for electric bicycle Download PDF

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Publication number
CN211641910U
CN211641910U CN201922235347.5U CN201922235347U CN211641910U CN 211641910 U CN211641910 U CN 211641910U CN 201922235347 U CN201922235347 U CN 201922235347U CN 211641910 U CN211641910 U CN 211641910U
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resistor
battery
module
triode
charger
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徐海霞
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Changzhou yiertong Electronics Co.,Ltd.
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Changzhou Vocational Institute of Light Industry
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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Abstract

The utility model relates to a battery charge-discharge management technical field, especially a battery management system management method suitable for electric bicycle. A battery management system suitable for an electric bicycle comprises a power supply module, a charging detection module, a discharging detection module, a wake-up and low-power consumption working module, a voltage acquisition module, a current acquisition module, a charger communication and instrument communication module and a processor connected with the modules; the charging detection module is connected with the battery and the charger; the discharge detection module is connected with the battery; the awakening and low-power consumption working module is connected with the battery, the charger and the discharge detection module; the voltage acquisition module acquires the voltage of a battery in the battery pack; the current acquisition module acquires charge and discharge currents of the battery; the instrument communication module is used for data interaction of related matched instruments; and the power supply module system supplies power. The utility model discloses can discern the charger that matches with the battery, effectively avoid the indiscriminate economic loss who causes with the charger of user.

Description

Battery management system suitable for electric bicycle
Technical Field
The utility model relates to a battery charge-discharge management technical field, especially a battery management system suitable for electric bicycle.
Background
The electric bicycles are huge in quantity in China, and in both cities and rural areas, every family basically has the electric bicycle, so that the traveling efficiency of the electric bicycles is high, and the problem of traffic jam is not worried about. The battery needs to be charged before the electric bicycle is used, when an originally matched charger of the electric bicycle is damaged or lost, most users basically buy one charger at any time and then charge the battery, when the battery is charged by the charger unmatched with the battery for a long time, the battery is easily damaged, and potential safety hazards are generated to cause economic loss. Current electronic driving is generally not furnished with battery management system, the utility model provides a can discern management system whether charger and battery match for the management electric bicycle charges.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery management system suitable for electric bicycle, this system can discern whether the charger matches with the battery, has effectively avoided the indiscriminate economic loss who causes with the charger of user. In order to realize the purpose, the utility model provides a following technical scheme:
a battery management system suitable for an electric bicycle comprises a power supply module, a charging detection module, a discharging detection module, a wake-up and low-power consumption working module, a voltage acquisition module, a current acquisition module, a processor, a charger and an instrument communication module; the charging detection module is connected with the positive electrode of the battery and the positive electrode of the charger and used for detecting whether the charger is matched with the battery or not, sending detection result information to the processor and controlling whether the charger is allowed to charge the battery or not; the discharge detection module is connected with the positive electrode of the battery and used for detecting whether the battery enters a discharge mode or not and sending detection result information to the processor; the awakening and low-power consumption working module is connected with the battery anode and the communication signal and discharge detection module of the charger and sends information to the processor; the voltage acquisition module acquires the voltage of a single battery in the battery pack and sends acquired voltage information to the processor; the current acquisition module acquires charge and discharge currents of the battery and sends acquired current information to the processor; the charger communication module is used for interacting data with a charger; the instrument communication module is used for data interaction of related matched instruments; the power supply module is used for supplying power to the whole system; the power supply module, the charging detection module, the discharging detection module, the awakening and low-power-consumption working module, the voltage acquisition module, the current acquisition module, the charger and the instrument communication module are all connected with the processor.
Further, the power supply module comprises a battery and a switching power supply module which are electrically connected, the battery supplies power to the whole system, and the switching power supply converts the voltage of the battery into the voltage which can be used by the management system.
Furthermore, the specific circuit connection structure of the charging detection module is as follows, the base electrode of the triode Q1 is connected to the positive electrode of the battery, and the other two electrodes are respectively connected to the output end of the diode D1 and the resistor R1; the resistor R1 is connected with the resistor R2 in series, the resistor R2 is connected with the base electrode of the triode Q3 and the other two poles of the triode Q3, wherein one pole is connected with the resistor R4, and the other pole is connected with the capacitor C1; the resistor R6 is connected with the resistor R7 in parallel, the resistor R5 is connected with the first diode D1 in parallel, the resistors R6 and R7 which are connected in parallel, the resistor R5 and the diode are connected to the grid electrode of the field effect transistor, and the drain electrode and the source electrode of the field effect transistor are respectively connected to the positive electrodes of the charger and the battery; the resistor R8 and the resistor R9 are connected with the base electrode of the triode Q2, one of the other two poles of the triode Q2 is grounded, and the other pole of the triode Q2 is connected with the resistor R6 and the resistor R7.
Furthermore, the specific circuit connection structure of the discharge detection module comprises a resistor R10 connected with an electric vehicle key switch, a resistor R10 and a resistor R11 are connected to the base electrode of the triode Q4, and the other two poles of the triode, wherein one pole of the triode is connected with the machine shell, the other pole of the triode is connected with the resistor R12, and the resistor R12 is connected with the 5V power supply module.
Further, the specific circuit connection structure of the wake-up and low-power-consumption working module is as follows, a resistor R18 is connected in parallel with a capacitor C2, a resistor R18 and a capacitor C2 which are connected in parallel are connected to a switching power supply and a resistor R17, a resistor R17 is connected to a resistor R16 and a triode Q5, a resistor R17 is connected to a base of a triode Q5, the other two poles of the triode Q5, one pole of the resistor R17 is connected to the positive pole of a battery, the other pole of the resistor R2 is connected to the input end of a fifth diode D5, a second diode D2, a third diode D3, a fourth diode D4 and a fifth diode D5 are connected in parallel and then connected in series with a resistor R15, and a; the other two poles of the triode Q6, one pole of which is grounded and the other pole of which is connected with the resistor R14; the resistor R14 is connected with the resistor R13 and the base electrode of the triode Q7, one pole of the other two poles of the triode Q7 is connected with the switching power supply, and the other pole is connected with the positive pole of the battery.
The utility model has the advantages that: (1) the system can identify the charger matched with the battery, and the battery cannot be charged after the wrong charger is inserted into the charging port, so that economic loss caused by the careless use of the charger by a user is effectively avoided;
(2) the system can close the power supply of the system, and the power consumption of the system is reduced.
Drawings
FIG. 1 is a schematic diagram of a battery management system for an electric bicycle;
FIG. 2 is a circuit diagram of a charge detection module;
FIG. 3 is a circuit diagram of a discharge detection module;
FIG. 4 is a circuit diagram of a wake-up and low power consumption operational module;
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
Example 1
As shown in fig. 1, a battery management system suitable for an electric bicycle comprises a power supply module, a charging detection module, a discharging detection module, a waking and low power consumption working module, a voltage acquisition module, a current acquisition module, a processor, a charger and an instrument communication module, wherein the power supply module, the charging detection module, the discharging detection module, the waking and low power consumption working module, the voltage acquisition module, the current acquisition module, the charger and the instrument communication module are all connected with the processor.
The charging detection module is connected with the positive electrode of the battery and the positive electrode of the charger and used for detecting whether the charger is matched with the battery or not and sending detection result information to the processor; the discharge detection module is connected with the positive electrode of the battery and used for detecting whether the battery enters a discharge mode or not and sending detection result information to the processor. As shown in fig. 2, the point a of the charge detection module is connected to the positive electrode of the charger, the point B is connected to the positive electrode of the battery, the base of the triode Q1 is connected to the positive electrode of the battery, and the other two electrodes are respectively connected to the output end of the diode D1 and the resistor R1; the resistor R1 is connected with the resistor R2 in series, the resistor R2 is connected with the base electrode of the triode Q3 and the other two poles of the triode Q3, wherein one pole is connected with the resistor R4, and the other pole is connected with the capacitor C1; the resistor R6 is connected with the resistor R7 in parallel, the resistor R5 is connected with the first diode D1 in parallel, the resistors R6 and R7 which are connected in parallel, the resistor R5 and the diode are connected to the grid electrode of the field effect transistor, and the drain electrode and the source electrode of the field effect transistor are respectively connected to the positive electrodes of the charger and the battery; the resistor R8 and the resistor R9 are connected with the base electrode of the triode Q2, one of the other two poles of the triode Q2 is grounded, and the other pole of the triode Q2 is connected with the resistor R6 and the resistor R7. When the positive electrode of the charger is charged, the D point can detect low level to indicate the intervention of the charger, and when the system detects that the charger is matched with the charger, the voltage of the C point is increased to allow the battery to be charged.
The discharge detection module is connected with the positive electrode of the battery and used for detecting whether the battery enters a discharge mode or not and sending detection result information to the processor; as shown in the circuit of fig. 3, the discharge detection module E is connected to the positive electrode of the battery, and includes a resistor R10 connected to the key switch of the electric vehicle, the resistor R10 and the resistor R11 are connected to the base of the transistor Q4, and the other two electrodes of the transistor, one of which is connected to the chassis, the other of which is connected to the resistor R12, and the resistor R12 is connected to the 5V power supply module. When the electric vehicle key is turned on, the voltage of the point F is pulled down, so that the battery can be detected to enter a discharging mode, and when the charging signal and the discharging signal exist simultaneously, the charging signal has higher priority.
The awakening and low-power consumption working module is connected with the battery anode, the communication signal of the charger and the discharge detection module and sends information to the processor. As shown in fig. 4, J of the discharge detection module is connected to the positive electrode of the battery, and H is connected to a communication signal of the charger. The circuit comprises a resistor R18 and a capacitor C2 which are connected in parallel, a resistor R18 and a capacitor C2 which are connected in parallel are connected to a switching power supply and a resistor R17, a resistor R17 is connected to a resistor R16 and a triode Q5, a resistor R17 is connected to the base of a triode Q5, the other two poles of the triode Q5 are connected, one pole of the resistor R17 is connected to the anode of a battery, the other pole of the resistor R5 is connected to the input end of a fifth diode D5, a second diode D2, a third diode D3, a fourth diode D4 and a fifth diode D5 are connected in parallel and then connected in series with a resistor R15, and a resistor R15 is; the other two poles of the triode Q6, one pole of which is grounded and the other pole of which is connected with the resistor R14; the resistor R14 is connected with the resistor R13 and the base electrode of the triode Q7, one pole of the other two poles of the triode Q7 is connected with the switching power supply, and the other pole is connected with the positive pole of the battery. When the matched charger is accessed into the system, the data can be sent to the management system, and the high and low levels of the sent data can awaken the system; the G is connected with a G point of the discharge detection module, the system can be awakened through the voltage after the key signal is switched on, and the I is connected with an output port of the processor, so that the system can automatically cut off the power supply of the system to enter a low power consumption mode; after the system enters the low power consumption mode, if the system does not have the wake-up state for a long time, the system can be automatically woken up to perform relevant verification work by setting the discharge time of R18 and C2.
The voltage acquisition module acquires the voltage of a single battery in the battery pack and sends acquired voltage information to the processor. The current acquisition module acquires charge and discharge current of the battery and sends acquired current information to the processor. The charger is used for charging the battery of the electric vehicle; the battery information display module is used for displaying the electric quantity information of the battery. The instrument communication module is used for data interaction of related matched instruments.
The power supply module is used for supplying power to the whole system; the management system comprises a battery and a switching power supply module which are electrically connected, wherein the battery supplies power to the whole system, and the switching power supply converts the voltage of the battery into the voltage which can be used by the management system.
The processor is an MCU, and the existing MCU can be realized, such as STM32F103 series.
When the electric bicycle is charged, the charging detection module works, the system can identify the special charger of the user, and after the wrong charger is inserted into the charging port, the battery cannot be charged, so that the economic loss caused by the messy use of the charger by the user is effectively avoided. When the battery is completely static, the system can turn off the power supply of the system, and the power consumption of the system is reduced.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: the above embodiments are only used for illustrating the present invention and do not limit the technical solution described in the present invention; thus, while the present invention has been described in detail with reference to the various embodiments thereof, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and within the scope and spirit of the following claims.

Claims (5)

1. The utility model provides a battery management system suitable for electric bicycle which characterized in that: the device comprises a power supply module, a charging detection module, a discharging detection module, a wake-up and low-power consumption working module, a voltage acquisition module, a current acquisition module, a processor and a charger communication and instrument communication module;
the charging detection module is connected with the positive electrode of the battery and the positive electrode of the charger and used for detecting whether the charger is connected or not, detecting whether the charger is matched with the battery or not and sending detection result information to the processor, and if the charger is qualified, the battery is allowed to be charged;
the discharge detection module is connected with the positive electrode of the battery and used for detecting whether the battery enters a discharge mode or not and sending detection result information to the processor;
the awakening and low-power consumption working module is connected with the battery anode and the communication signal and discharge detection module of the charger and sends information to the processor;
the voltage acquisition module acquires the voltage of a single battery in the battery pack and sends acquired voltage information to the processor;
the current acquisition module acquires charge and discharge currents of the battery and sends acquired current information to the processor;
the charger communication module is used for carrying out data interaction with the related matched charger;
the instrument communication module is used for data interaction of related matched instruments;
the power supply module is used for supplying power to the whole system;
the power supply module, the charging detection module, the discharging detection module, the awakening and low-power-consumption working module, the voltage acquisition module, the current acquisition module, the charger and the instrument communication module are all connected with the processor.
2. The battery management system for electric bicycles of claim 1, wherein: the power supply module comprises a battery and a switch power supply module which are electrically connected, the battery supplies power to the whole system, and the switch power supply converts the voltage of the battery into the voltage which can be used by the management system.
3. The battery management system for electric bicycles of claim 1, wherein: the specific circuit connection relationship of the charging detection module is as follows,
the base electrode of the triode Q1 is connected with the anode of the battery, and the other two electrodes are respectively connected with the output end of the diode D1 and the resistor R1; the resistor R1 is connected with the resistor R2 in series, the resistor R2 is connected with the base electrode of the triode Q3 and the other two poles of the triode Q3, wherein one pole is connected with the resistor R4, and the other pole is connected with the capacitor C1;
the resistor R6 is connected with the resistor R7 in parallel, the resistor R5 is connected with the first diode D1 in parallel, the resistors R6 and R7 which are connected in parallel, the resistor R5 and the diode are connected to the grid electrode of the field effect transistor, and the drain electrode and the source electrode of the field effect transistor are respectively connected to the positive electrodes of the charger and the battery;
the resistor R8 and the resistor R9 are connected with the base electrode of the triode Q2, one of the other two poles of the triode Q2 is grounded, and the other pole of the triode Q2 is connected with the resistor R6 and the resistor R7.
4. The battery management system for electric bicycles of claim 1, wherein: the specific circuit connection relationship of the discharge detection module is that the discharge detection module comprises a resistor R10 connected with an electric vehicle key switch, a resistor R10 and a resistor R11 are connected with the base electrode of a triode Q4 and the other two poles of the triode, wherein one pole of the triode is connected with a machine shell, the other pole of the triode is connected with a resistor R12, and a resistor R12 is connected with a 5V power supply module.
5. The battery management system for electric bicycles of claim 2, wherein: the circuit connection relationship of the wake-up and low-power consumption operation module is specifically as follows,
a resistor R18 and a capacitor C2 are connected in parallel, a resistor R18 and a capacitor C2 which are connected in parallel are connected to a switching power supply and a resistor R17, a resistor R17 is connected to a resistor R16 and a triode Q5, a resistor R17 is connected to the base of a triode Q5, the other two poles of a triode Q5 are connected, one pole of the other pole is connected to the anode of the battery, the other pole of the triode Q5 is connected to the input end of a fifth diode D5, a second diode D2, a third diode D3, a fourth diode D4 and a fifth diode D5 are connected in parallel and then connected with a resistor R15 in series, and a; the other two poles of the triode Q6, one pole of which is grounded and the other pole of which is connected with the resistor R14; the resistor R14 is connected with the resistor R13 and the base electrode of the triode Q7, one pole of the other two poles of the triode Q7 is connected with the switching power supply, and the other pole is connected with the positive pole of the battery.
CN201922235347.5U 2019-12-13 2019-12-13 Battery management system suitable for electric bicycle Active CN211641910U (en)

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CN201922235347.5U CN211641910U (en) 2019-12-13 2019-12-13 Battery management system suitable for electric bicycle

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Application Number Priority Date Filing Date Title
CN201922235347.5U CN211641910U (en) 2019-12-13 2019-12-13 Battery management system suitable for electric bicycle

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Effective date of registration: 20210608

Address after: 213119 industrial concentration area, Dongzhou village, Hengshanqiao Town, Wujin District, Changzhou City, Jiangsu Province

Patentee after: Changzhou yiertong Electronics Co.,Ltd.

Address before: 213000 No.28, Mingxin Middle Road, Wujin District, Changzhou City, Jiangsu Province

Patentee before: Changzhou Polytechnic

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