CN212587563U - Ignition-proof battery management system and battery pack - Google Patents
Ignition-proof battery management system and battery pack Download PDFInfo
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- CN212587563U CN212587563U CN202021831166.5U CN202021831166U CN212587563U CN 212587563 U CN212587563 U CN 212587563U CN 202021831166 U CN202021831166 U CN 202021831166U CN 212587563 U CN212587563 U CN 212587563U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a prevent battery management system and group battery of striking sparks, including MCU module, simulation front end module, pre-discharge module, charge-discharge MOS pipe and input/output interface. The utility model discloses a load type that physics module automated inspection group battery is connected to carry out the charge-discharge according to the load type of connection. When charging, the charging power supply is automatically disconnected according to the voltage of the battery pack, so that the battery pack is prevented from being overcharged. When discharging, the low-current pre-discharge is carried out through the pre-discharge module, whether the external load meets the condition of opening the charge-discharge MOS tube or not is judged, the large-capacity load can be subjected to current-limiting charging in advance through the loop, the problem that the charge-discharge MOS tube is damaged by external short circuit can be well solved, and the plug is prevented from being ignited. Simultaneously the utility model discloses simple structure need not to reform transform the load equipment of stock, has reduced use cost.
Description
Technical Field
The utility model belongs to the technical field of battery management, especially, relate to an avoid connecting load and strike sparks battery management system and group battery of preventing striking sparks in the twinkling of an eye.
Background
The battery pack has two states of charging and discharging during use. In the process of charging the battery, in order to prolong the service life of the battery, long-time continuous charging needs to be avoided after the battery is fully charged. When the battery is connected with a load (an electric vehicle), the battery plug can generate an ignition phenomenon at the moment of electrifying due to the internal capacitance of the electric vehicle controller, the contact resistance of the plug can be increased due to long-term ignition, and the service life of the plug is influenced.
The general method of the industry is to add a connection detection signal on a plug to realize connection first and then electrifying, but the defects are that the electric vehicles with stocks cannot be compatible, the improvement is required, and the manpower and material resources are increased unnecessarily. Another drawback is that there is a safety risk of breaking the MOS due to the large current opening the MOS when the charging and discharging MOS is turned on when the battery is connected to a large load or the load is short-circuited.
Therefore, the battery management system needs to have a function of automatically detecting a charge/discharge state and a function of preventing sparking when a load is connected.
Disclosure of Invention
An object of the utility model is to prior art's defect, provide one kind can the automated inspection insert the load type, need not to carry out the battery management system and the group battery of preventing striking sparks that reform transform to stock load equipment.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:
prevent battery management system that strikes sparks, its characterized in that: the device comprises an MCU module, an analog front end module, a pre-discharge module, a charge-discharge MOS tube and an input/output interface; wherein
The analog front end module outputs high and low potentials to one end of the input and output interface and transmits a feedback potential signal to the MCU module; controlling the charging and discharging MOS tube to be opened and closed according to a control signal sent by the MCU module;
one end of the pre-discharge module is connected with one electrode of the battery pack, the other end of the pre-discharge module is connected with one end of the input/output interface, and low-current pre-discharge is carried out according to a control signal sent by the MCU module;
one end of the charging and discharging MOS tube is connected with one electrode of the battery pack, the other end of the charging and discharging MOS tube is connected with one end of the input and output interface, and the charging and discharging MOS tube is controlled to be opened and closed by the analog front-end module;
one end of the input/output interface is respectively connected with one end of the analog front-end module, the pre-discharge module and one end of the charge/discharge MOS tube, and the other end of the input/output interface is connected with the other electrode of the battery pack;
the MCU module is used for controlling the analog front end module to provide high and low potentials and judging the load type according to a feedback signal of the analog front end module; sending a control signal to control the charging and discharging MOS tube to be opened and closed through the analog front end module; and sending a control signal to control the pre-discharge module to work.
It is further characterized in that: one end of the pre-discharge module and one end of the charge-discharge MOS tube are connected with the cathode of the battery pack, and the other end of the pre-discharge module and the other end of the charge-discharge MOS tube are connected with the negative end of the input-output interface; and the positive end of the input/output interface is connected with the anode of the battery pack.
Preferably: the battery pack is a lithium battery pack.
Preferably: the battery management system is also provided with an RS485 communication module.
Prevent group battery of striking sparks, its characterized in that: the battery pack adopts the ignition-proof battery management system.
The utility model discloses a load type that physics module automated inspection group battery is connected to carry out the charge-discharge according to the load type of connection. When charging, the charging power supply is automatically disconnected according to the voltage of the battery pack, so that the battery pack is prevented from being overcharged. When discharging, the low-current pre-discharge is carried out through the pre-discharge module, whether the external load meets the condition of starting the charge and discharge MOS is judged, the large-capacity load can be subjected to current-limiting charging in advance through the loop, the problem that the external short circuit damages the charge and discharge MOS tube can be well solved, and the plug is prevented from being ignited. Simultaneously the utility model discloses simple structure need not to reform transform the load equipment of stock, has reduced use cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, an ignition-proof battery management system includes an MCU module, an analog front end module, a pre-discharge module, a charge/discharge MOS transistor, and an input/output interface.
The analog front end module outputs high and low potentials to one end of the input and output interface and transmits a feedback potential signal to the MCU module; and controlling the charging and discharging MOS tube to be opened and closed according to the control signal sent by the MCU module.
One end of the pre-discharge module is connected with the cathode of the battery pack, the other end of the pre-discharge module is connected with the negative end of the input/output interface, and low-current pre-discharge is carried out according to a control signal sent by the MCU module.
One end of the charging and discharging MOS tube is connected with the cathode of the battery pack, the other end of the charging and discharging MOS tube is connected with the negative end of the input and output interface, and the charging and discharging MOS tube is controlled to be opened and closed by the analog front end module.
The negative end of the input/output interface is respectively connected with the analog front-end module, the pre-discharge module and one end of the charge/discharge MOS tube, and the positive end of the input/output interface is connected with the anode of the battery pack.
The MCU module is used for controlling the analog front-end module to provide high and low potentials and judging the load type according to a feedback signal of the analog front-end module; sending a control signal to control the charging and discharging MOS tube to be opened and closed through the analog front end module; and sending a control signal to control the pre-discharge module to work.
The utility model discloses prevent battery management system of striking sparks can also have RS485 communication module (not drawn in the picture), can automatic identification and response the cabinet communication that charges when being connected with the charger cabinet.
The utility model discloses the during operation, MCU module control simulation front end module provides high low potential regularly, regularly detects load access signal, distinguishes and judges whether there is the load that charges or discharge to insert.
Detecting a charger: the MCU module controls the analog front-end module to pull up the internal of a load access signal to a VDD power supply B + potential point, at this time, if a charger is accessed, the potential of a P-point shown in figure 1 is pulled down by the charger, and thus, the analog front-end module feeds back charger access information to the MCU module. When the charger is idle, the potential of the charger is not changed and the high voltage level is kept.
And (3) discharge load detection: the MCU module controls the analog front-end module to pull down the interior of a load access signal to a GND power supply B-potential point, at this time, if a load is accessed, the potential of a P-point shown in figure 1 is pulled up to a VDD power supply B + potential by the load, and thus, the analog front-end module feeds back load access information to the MCU module. Also, when no load is applied, the potential does not change during the load detection and remains low.
Charging:
the utility model discloses RS485 communication function also can be supported to battery management system and group battery, can automatic identification and response charge the cabinet communication (the communication is not the prerequisite of charging) when inserting the charger cabinet to close the charge and discharge MOS pipe simultaneously when charging completion full electricity, close the charge and discharge return circuit, perhaps remove through the electric current judgement can initiatively close the charge and discharge return circuit after the charger on the way charging, prevent to take the purpose of "load" on the electricity.
Discharging:
the utility model discloses the group battery judges the load that "load" of access is the charger form or the form of discharging through the potential change that outside access "load" and arouse under the closed charge-discharge circuit condition.
The charger form is connected: and judging whether charging is needed according to the voltage state, and directly and immediately starting a charging and discharging MOS tube to charge if charging is needed.
The discharge load form is switched in: through the pre-discharge module of bypass, trial discharge to judge that pre-discharge current size and current trend judge external load and whether accord with the condition of opening charge-discharge MOS pipe, can carry out current-limiting in advance to big capacitive load through this return circuit and charge, and can be fine prevent that external short circuit from damaging the problem of charge-discharge MOS pipe, prevent that the plug from striking sparks.
No load:
the utility model discloses the group battery carries out load current in real time and judges when charge-discharge circuit is opened entirely, closes the action to charge-discharge MOS pipe after no current no-load lasts a period to whether short-term test charger is on the throne with the load after closing, judge the processing that whether need reopen charge-discharge MOS pipe according to the load potential condition. The purpose that the charging and discharging loop is closed after the equipment is unloaded and the live ignition is prevented when the load is connected again is achieved.
Claims (5)
1. Prevent battery management system that strikes sparks, its characterized in that: the device comprises an MCU module, an analog front end module, a pre-discharge module, a charge-discharge MOS tube and an input/output interface; wherein
The analog front end module outputs high and low potentials to one end of the input and output interface and transmits a feedback potential signal to the MCU module; controlling the charging and discharging MOS tube to be opened and closed according to a control signal sent by the MCU module;
one end of the pre-discharge module is connected with one electrode of the battery pack, the other end of the pre-discharge module is connected with one end of the input/output interface, and low-current pre-discharge is carried out according to a control signal sent by the MCU module;
one end of the charging and discharging MOS tube is connected with one electrode of the battery pack, the other end of the charging and discharging MOS tube is connected with one end of the input and output interface, and the charging and discharging MOS tube is controlled to be opened and closed by the analog front-end module;
one end of the input/output interface is respectively connected with one end of the analog front-end module, the pre-discharge module and one end of the charge/discharge MOS tube, and the other end of the input/output interface is connected with the other electrode of the battery pack;
the MCU module is used for controlling the analog front end module to provide high and low potentials and judging the load type according to a feedback signal of the analog front end module; sending a control signal to control the charging and discharging MOS tube to be opened and closed through the analog front end module; and sending a control signal to control the pre-discharge module to work.
2. The ignition-resistant battery management system according to claim 1, wherein: one end of the pre-discharge module and one end of the charge-discharge MOS tube are connected with the cathode of the battery pack, and the other end of the pre-discharge module and the other end of the charge-discharge MOS tube are connected with the negative end of the input-output interface; and the positive end of the input/output interface is connected with the anode of the battery pack.
3. The ignition-preventive battery management system according to claim 1 or 2, characterized in that: the battery pack is a lithium battery pack.
4. The ignition-preventive battery management system according to claim 1 or 2, characterized in that: the battery management system is also provided with an RS485 communication module.
5. Prevent group battery of striking sparks, its characterized in that: the battery pack employs the ignition-proof battery management system according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021831166.5U CN212587563U (en) | 2020-08-28 | 2020-08-28 | Ignition-proof battery management system and battery pack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021831166.5U CN212587563U (en) | 2020-08-28 | 2020-08-28 | Ignition-proof battery management system and battery pack |
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| CN212587563U true CN212587563U (en) | 2021-02-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346304A (en) * | 2021-06-11 | 2021-09-03 | 上海智租物联科技有限公司 | Prevent two-wheeled electric motor car and power battery's of striking sparks connecting wire |
| CN113595169A (en) * | 2021-06-18 | 2021-11-02 | 浙江高泰昊能科技有限公司 | BMS (battery management system) ignition prevention method and device, computer equipment and storage medium |
| CN114243853A (en) * | 2021-12-24 | 2022-03-25 | 无锡锂安新能源科技有限公司 | Portable power supply ecological system |
-
2020
- 2020-08-28 CN CN202021831166.5U patent/CN212587563U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346304A (en) * | 2021-06-11 | 2021-09-03 | 上海智租物联科技有限公司 | Prevent two-wheeled electric motor car and power battery's of striking sparks connecting wire |
| CN113595169A (en) * | 2021-06-18 | 2021-11-02 | 浙江高泰昊能科技有限公司 | BMS (battery management system) ignition prevention method and device, computer equipment and storage medium |
| CN114243853A (en) * | 2021-12-24 | 2022-03-25 | 无锡锂安新能源科技有限公司 | Portable power supply ecological system |
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Address after: 214000 west side of B6 third floor, Pioneer Park, Liyuan Development Zone, 846 yinxiu Road, Binhu District, Wuxi City, Jiangsu Province Patentee after: Wuxi Ruiqi Energy Technology Co.,Ltd. Patentee after: Lanzhou Ruiqi Intelligent Technology Co.,Ltd. Address before: 214000 west side of B6 third floor, Pioneer Park, Liyuan Development Zone, 846 yinxiu Road, Binhu District, Wuxi City, Jiangsu Province Patentee before: Jiangsu GCL Ruiqi Energy Technology Co.,Ltd. Patentee before: Lanzhou Ruiqi Intelligent Technology Co.,Ltd. |
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Effective date of registration: 20230822 Address after: 214000 West side of the third floor of A6 standard factory building in Liyuan Development Zone, Wuxi City, Jiangsu Province Patentee after: WUXI RUIQI COMMUNICATION TECHNOLOGY CO.,LTD. Address before: 214000 west side of B6 third floor, Pioneer Park, Liyuan Development Zone, 846 yinxiu Road, Binhu District, Wuxi City, Jiangsu Province Patentee before: Wuxi Ruiqi Energy Technology Co.,Ltd. Patentee before: Lanzhou Ruiqi Intelligent Technology Co.,Ltd. |