CN209994127U - BMS protection shield suitable for on storage battery car - Google Patents
BMS protection shield suitable for on storage battery car Download PDFInfo
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- CN209994127U CN209994127U CN201920609285.7U CN201920609285U CN209994127U CN 209994127 U CN209994127 U CN 209994127U CN 201920609285 U CN201920609285 U CN 201920609285U CN 209994127 U CN209994127 U CN 209994127U
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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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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The utility model relates to a battery protection shield field discloses a BMS protection shield suitable for on storage battery car, including group battery (1), current detection control circuit (2) and main control unit (3), main control unit (3) are including interconnect's front end AFE circuit (31), main control MCU (32), current detection control circuit (2) are including the current limiting unit that charges, the MOS pipe that charges, discharge MOS pipe and discharge MOS pipe drive unit, current detection control circuit (2) still include detection resistance and arithmetic circuit unit, main control MCU (32)'s output is connected with GPS orientation module (33), LED display module (34), speaker (35), network communication module (36). The protection shield makes the lithium cell receive the undulant influence of electric wire netting not big, improves safe in utilization, is equipped with GPS orientation module, has improved this battery theftproof ability that is provided with this circuit, understands the residual capacity condition of battery at any time, realizes that the time information of battery or storage battery car rents, has improved greatly and has used experience.
Description
Technical Field
The utility model relates to a battery protection shield field especially relates to a BMS protection shield suitable for on storage battery car.
Background
The battery car is taken as a clean and pollution-free green travel tool, is accepted and used by wide consumers, and the annual purchase amount is still increased. The lithium ion battery pack has the advantages of light weight, long cycle life, good low-temperature discharge performance, strong cruising ability, short charging time, no influence on cycle life due to large-current discharge and the like, and is rapidly replacing the lead-acid battery pack to be used by the electric vehicle. Lithium ion batteries, because of their relatively high activity, must be used in conjunction with lithium ion battery protective plates.
As a new generation of green high-energy battery, compared with the traditional lead-acid battery and nickel-metal hydride battery, the lithium battery has excellent performance, long service life, environmental protection and the like, but the stability of the lithium battery is inferior to that of the traditional battery, so that safety is a great problem to be solved urgently. The lithium battery is made of materials which determine that the lithium battery cannot be overcharged, overdischarged, overcurrent, short-circuited and subjected to ultrahigh-temperature charging and discharging, and once the lithium battery is short-circuited, the lithium battery is ignited if light and explodes if heavy. The safety problem of the lithium battery becomes a key factor influencing the development of Chinese electric automobiles, communication base stations, electric bicycles and the like, and besides enhancing the safety performance of the battery core, the improvement of the battery management level is also an effective means from the BMS technology.
The battery protection board generally has the functions of voltage measurement, current measurement and temperature measurement. Ideal battery charging characteristics: under constant voltage-constant current charging conditions: the constant current mode is entered first, and then the constant voltage mode is reached to enter the charging. Because the lithium batteries have differences in quantity, the differences come from the concentration difference of the battery negative electrode materials, the lattice form variation of the battery negative electrode materials, the thickness of the diaphragm, the uniform coating difference, the pore blockage of the diaphragm and other factors. Fresh cells may be screened (so-called group pairing) to achieve cell consistency. However, after several charge-discharge cycles, the consistency is no longer present, which is manifested by a large difference in residual energy between the individual cells. In this case, the battery capacity becomes smaller, and the charging and discharging become insufficient.
The application number CN201720366648 is a utility model patent, and discloses an electric vehicle power supply system, which comprises a plurality of lithium battery packs connected in parallel, wherein the lithium battery packs are used for storing and providing electric energy, and a charging and discharging circuit is connected with each lithium battery pack; a BMS management system is arranged in each lithium battery pack and is used for monitoring and managing each lithium battery pack and uploading data; the BMS management system is connected with the central controller, and the central controller is used for processing data uploaded by the lithium battery pack through the BMS management system. The system has the advantages of reliable power supply system, convenient maintenance and use, independent control of each lithium battery pack and low manufacturing cost. However, the system lacks protection of the battery during charging of the battery, has poor safety performance, is not provided with corresponding functions aiming at the theft prevention of the electric vehicle and the like, and has insufficient protection performance of the battery car.
Disclosure of Invention
The utility model discloses to the shortcoming that theftproof, the protection of charging performance of storage battery car battery are not enough among the prior art, provide a BMS protection shield suitable for on the storage battery car.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
a BMS protection board suitable for a battery car comprises a battery pack, a current detection control circuit and a main control unit, wherein the main control unit comprises a front end AFE circuit and a main control MCU which are connected with each other, and the front end AFE circuit is connected with the battery pack and the main control MCU; the current detection control circuit comprises a charging current limiting unit, a charging MOS tube, a discharging MOS tube and a discharging MOS tube driving unit, and also comprises a detection resistor and an arithmetic circuit unit, wherein a main control MCU is connected with the detection resistor and the arithmetic circuit in series, the main control MCU is connected with the charging current limiting unit, the charging MOS tube, the discharging MOS tube and the discharging MOS tube driving unit, and the charging current limiting unit is connected with the charging MOS tube in parallel; the output end of the main control MCU is connected with a GPS positioning module, an LED display module, a loudspeaker and a network communication module; the main control MCU is provided with a storage module, a geographical position range is stored in the storage module, the GPS positioning module transmits a current position signal to the main control MCU, and the main control MCU compares the current position signal with the geographical position range in the storage module and reminds a user of positioning deviation or positioning over-range through the LED display module, the loudspeaker and the network communication module; the master control MCU is also provided with a timing unit for independently controlling the charging MOS tube and the discharging MOS tube to be opened and closed. Setting the maximum current values of charging and discharging, and entering a current limiting state when the maximum current values reach a set value, wherein the current limiting values can be 2A, 5A, 10A, 20A and the like, and the corresponding current limiting values are configured in a connector splicing mode, 1-3 times of charging overcurrent detection are carried out, the current limiting time is 5min, 4-6 times of charging overcurrent detection are carried out, 10min and 6-10 times of charging overcurrent detection are carried out, the current limiting time is 30min, and the charging and current limiting unit is locked in a current limiting mode for charging after 10 times.
The long-range and user's of network communication module data receiving end is like the cell-phone, the computer, dull and stereotyped etc. are connected, be equipped with GPS orientation module, can be general on private storage battery car and sharing storage battery car, the storage battery car is equipped with GPS orientation module's location, if the location produces the skew and when oneself does not have the use, carry out timely notice through network communication module, remind the possible theft that receives of user storage battery car, in time prevent burglary, GPS orientation module's on the sharing storage battery car current position signal and the geographical position scope contrast in the storage module, if exceed the scope of riding, simultaneously through network communication module, speaker and display screen in time remind the user, avoid it to produce unnecessary loss, thereby this battery theftproof ability that is provided with this monitoring circuit has been improved greatly.
The LED display module and the loudspeaker can complete broadcasting of current information collected by the main control MCU and electric quantity information of the voltage information battery pack, so that a user can know the residual electric quantity condition of the battery at any time, and the friendliness of the user in using the battery is improved.
The master control MCU is also provided with a timing unit for independently controlling the charging MOS tube and the discharging MOS tube to be opened and closed, and a user can set the charging and discharging conduction time of the battery by himself, so that the renting of the battery or the battery car according to the time information can be realized. For example, after the discharge time is set, the discharge MOS is turned off after the corresponding time elapses, and the load terminal is turned off.
Preferably, the input end of the detection resistor is connected with the B-electrode, the output end of the detection resistor is connected with the discharge MOS tube, the operation circuit is connected with two ends of the detection resistor, the operation circuit detects the input or output current of the battery pack through the detection resistor, the operation circuit is respectively connected with the detector and the real-time monitor in the main control MCU, the main control MCU further comprises a driver, and the main control MCU receives the input or output current of the battery pack detected by the operation circuit and drives the charge MOS tube and the discharge MOS tube through the driver. The operation circuit is internally provided with a comparator which is compared with a set voltage, the comparator outputs an interruption trigger signal of the main control MCU, the main control MCU is also provided with a timer, the timer provides a time signal, when the set charging overcurrent condition is met, the main control MCU controls to turn off the charging MOS and keep the charging current limiting module to be conducted, so that the charging current limiting module is switched to the current limiting module at the highest speed, the charging current is effectively prevented from being large, the charging MOS is burnt out, and meanwhile, secondary charging overcurrent protection and control protection time are carried out according to the time delay of the timer. In normal current, the charging current-limiting function is not started, and charging and discharging management depends on charging and discharging MOS.
Preferably, the output end of the main control unit is respectively connected with the discharge MOS tube driving unit and the charge MOS tube, the input end of the discharge MOS tube is connected with the B-electrode through a detection resistor, the output end of the discharge MOS tube is connected with the input end of the charge MOS tube and the input end of the charge current-limiting unit, and the output end of the charge current-limiting unit and the output end of the charge MOS tube are connected with the P-electrode.
Preferably, the battery pack further comprises a temperature detection unit for detecting the temperature of the battery pack and a temperature sensing circuit, wherein a temperature detector in the temperature detection unit detects the surface temperature of the single battery cells in the battery pack and transmits the surface temperature to the main control MCU through the temperature sensing circuit.
Preferably, the charger access detector is further included, the master control MCU further comprises a state monitor, the charger access detector is connected with the state monitor, and the charger access detector identifies the access state of the charger and transmits a charger access signal to the master control MCU when detecting that the charger is accessed.
The difference of a single battery cell of the acquisition voltage U-0 + Ir (U0-battery voltage; I-charging current; r battery internal resistance) causes the internal resistance to be inconsistent, and the battery enters a protection state too fast due to the fact that the lithium battery supports quick charging and the acquisition voltage is large due to large current at the charging end of the battery pack, so that the battery does not reach a full-charge state. And the current I is reduced when the charging tail end of the battery pack enters a current limiting state, and the acquired voltage U is reduced so as to charge more energy into the battery and enable the battery to reach a full state. This function facilitates the cell inside the battery pack to tend to be consistent.
The utility model discloses owing to adopted above technical scheme, have apparent technological effect:
the current limiting function of the protection board solves the problem that the current of the charger cannot be stably output or surging is output in the actual charging process of the battery PACK, the battery PACK can enter a current limiting mode to be charged when the current is larger than the set maximum value of the protection board, and the current limiting function can effectively protect a charging MOS from being punctured in frequent heavy current rush; in the process of parallel use of a plurality of groups of batteries PACK, because a certain group or a plurality of groups of batteries are fully charged with protection or charging overcurrent protection, the overcurrent protection and other battery PACKs can enter a current-limiting charging state, all the battery PACKs are fully charged to make the battery PACKs tend to be consistent, and therefore the condition that the next charging is too early to enter a current-limiting mode is improved.
The protection board makes the lithium cell receive the electric wire netting undulant influence not big, has improved the security performance of product. Especially, the voltage at night in many places is higher, the fluctuation is larger, the wave resistance of the lithium battery is poorer, the current limitation can lead the lithium battery to be charged and filled with wave peaks, and the use safety is improved.
The battery anti-theft circuit is provided with the GPS positioning module and is connected with a user through a network, so that the anti-theft capacity of the battery provided with the circuit is greatly improved. The residual capacity condition of the battery can be known at any time, the renting of the battery or the battery car according to time information is realized, and the use experience is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The names of the parts indicated by the numerical references in the above figures are as follows: the system comprises a battery pack 1, a current detection control circuit 2, a main control unit 3, a front end AFE circuit 31, a main control MCU32, a GPS positioning module 33, an LED display module 34, a loudspeaker 35 and a network communication module 36.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A BMS protection board suitable for a battery car is shown in figure 1 and comprises a battery pack 1, a current detection control circuit 2 and a main control unit 3, wherein the main control unit 3 comprises a front end AFE circuit 31 and a main control MCU32 which are connected with each other, and the front end AFE circuit 31 is connected with the battery pack 1 and the main control MCU 32; the current detection control circuit 2 comprises a charging current limiting unit, a charging MOS tube, a discharging MOS tube and a discharging MOS tube driving unit, the current detection control circuit 2 also comprises a detection resistor and an arithmetic circuit unit, a main control MCU32 is connected with the detection resistor and the arithmetic circuit in series, a main control MCU32 is connected with the charging current limiting unit, the charging MOS tube, the discharging MOS tube and the discharging MOS tube driving unit, and the charging current limiting unit is connected with the charging MOS tube in parallel; the output end of the main control MCU32 is connected with a GPS positioning module 33, an LED display module 34, a loudspeaker 35 and a network communication module 36; the main control MCU32 is provided with a storage module, the storage module stores a geographical position range, the GPS positioning module 33 transmits a current position signal to the main control MCU32, and the main control MCU32 compares the current position signal with the geographical position range in the storage module and reminds a user of deviation or over-range positioning through the LED display module 34, the loudspeaker 35 and the network communication module 36; the master control MCU32 is also provided with a timing unit for independently controlling the on-off of the charging MOS tube and the discharging MOS tube.
The input end of the detection resistor is connected with the B-electrode, the output end of the detection resistor is connected with the discharge MOS tube, the operation circuit is connected with two ends of the detection resistor, the operation circuit detects the input or output current of the battery pack 1 through the detection resistor, the operation circuit is respectively connected with the detector and the real-time monitor in the main control MCU32, the main control MCU32 further comprises a driver, and the main control MCU32 receives the input or output current of the battery pack 1 detected by the operation circuit and drives the charge MOS tube and the discharge MOS tube through the driver.
The output end of the main control unit 3 is respectively connected with the discharge MOS tube driving unit and the charge MOS tube, the input end of the discharge MOS tube is connected with the B-electrode through a detection resistor, the output end of the discharge MOS tube is connected with the input end of the charge MOS tube and the input end of the charge current-limiting unit, and the output end of the charge current-limiting unit and the output end of the charge MOS tube are connected with the P-electrode.
The battery pack is characterized by further comprising a temperature detection unit and a temperature sensing circuit, wherein the temperature detection unit is used for detecting the temperature of the battery pack 1, and a temperature detector in the temperature detection unit is used for measuring the surface temperature of the single battery cells in the battery pack 1 and transmitting the surface temperature to the main control MCU32 through the temperature sensing circuit.
The intelligent charger control system further comprises a charger access detector, the master control MCU32 further comprises a state monitor, the charger access detector is connected with the state monitor, and the charger access detector identifies the access state of the charger and transmits a charger access signal to the master control MCU32 when detecting that the charger is accessed.
Example 2
A BMS protection board suitable for a battery car is shown in figure 1 and comprises a battery pack 1, a current detection control circuit 2 and a main control unit 3, wherein the main control unit 3 comprises a front end AFE circuit 31 and a main control MCU32 which are connected with each other, and the front end AFE circuit 31 is connected with the battery pack 1 and the main control MCU 32; the current detection control circuit 2 comprises a charging current limiting unit, a charging MOS tube, a discharging MOS tube and a discharging MOS tube driving unit, the current detection control circuit 2 also comprises a detection resistor and an arithmetic circuit unit, a main control MCU32 is connected with the detection resistor and the arithmetic circuit in series, a main control MCU32 is connected with the charging current limiting unit, the charging MOS tube, the discharging MOS tube and the discharging MOS tube driving unit, and the charging current limiting unit is connected with the charging MOS tube in parallel; the output end of the main control MCU32 is connected with a GPS positioning module 33, an LED display module 34, a loudspeaker 35 and a network communication module 36; the main control MCU32 is provided with a storage module, the storage module stores a geographical position range, the GPS positioning module 33 transmits a current position signal to the main control MCU32, and the main control MCU32 compares the current position signal with the geographical position range in the storage module and reminds a user of deviation or over-range positioning through the LED display module 34, the loudspeaker 35 and the network communication module 36; the master control MCU32 is also provided with a timing unit for independently controlling the on-off of the charging MOS tube and the discharging MOS tube.
The input end of the detection resistor is connected with the B-electrode, the output end of the detection resistor is connected with the discharge MOS tube, the operation circuit is connected with two ends of the detection resistor, the operation circuit detects the input or output current of the battery pack 1 through the detection resistor, the operation circuit is respectively connected with the detector and the real-time monitor in the main control MCU32, the main control MCU32 further comprises a driver, and the main control MCU32 receives the input or output current of the battery pack 1 detected by the operation circuit and drives the charge MOS tube and the discharge MOS tube through the driver.
The operation circuit is provided with a comparator which is compared with the set voltage, the comparator outputs an interrupt trigger signal of the main control MCU32, the main control MCU32 is also provided with a timer, the timer provides a time signal, the charging current-limiting function is not started when the current is normal, and the charging and discharging management depends on the charging and discharging MOS.
The output end of the main control unit 3 is respectively connected with the discharge MOS tube driving unit and the charge MOS tube, the input end of the discharge MOS tube is connected with the B-electrode through a detection resistor, the output end of the discharge MOS tube is connected with the input end of the charge MOS tube and the input end of the charge current-limiting unit, and the output end of the charge current-limiting unit and the output end of the charge MOS tube are connected with the P-electrode.
The battery pack is characterized by further comprising a temperature detection unit and a temperature sensing circuit, wherein the temperature detection unit is used for detecting the temperature of the battery pack 1, and a temperature detector in the temperature detection unit is used for measuring the surface temperature of the single battery cells in the battery pack 1 and transmitting the surface temperature to the main control MCU32 through the temperature sensing circuit.
The intelligent charger control system further comprises a charger access detector, the master control MCU32 further comprises a state monitor, the charger access detector is connected with the state monitor, and the charger access detector identifies the access state of the charger and transmits a charger access signal to the master control MCU32 when detecting that the charger is accessed.
Example 3
A BMS protection board suitable for a battery car is shown in figure 1 and comprises a battery pack 1, a current detection control circuit 2 and a main control unit 3, wherein the main control unit 3 comprises a front end AFE circuit 31 and a main control MCU32 which are connected with each other, and the front end AFE circuit 31 is connected with the battery pack 1 and the main control MCU 32; the current detection control circuit 2 comprises a charging current limiting unit, a charging MOS tube, a discharging MOS tube and a discharging MOS tube driving unit, the current detection control circuit 2 also comprises a detection resistor and an arithmetic circuit unit, a main control MCU32 is connected with the detection resistor and the arithmetic circuit in series, a main control MCU32 is connected with the charging current limiting unit, the charging MOS tube, the discharging MOS tube and the discharging MOS tube driving unit, and the charging current limiting unit is connected with the charging MOS tube in parallel; the output end of the main control MCU32 is connected with a GPS positioning module 33, an LED display module 34, a loudspeaker 35 and a network communication module 36; the main control MCU32 is provided with a storage module, the storage module stores a geographical position range, the GPS positioning module 33 transmits a current position signal to the main control MCU32, and the main control MCU32 compares the current position signal with the geographical position range in the storage module and reminds a user of deviation or over-range positioning through the LED display module 34, the loudspeaker 35 and the network communication module 36; the master control MCU32 is also provided with a timing unit for independently controlling the on-off of the charging MOS tube and the discharging MOS tube.
The input end of the detection resistor is connected with the B-electrode, the output end of the detection resistor is connected with the discharge MOS tube, the operation circuit is connected with two ends of the detection resistor, the operation circuit detects the input or output current of the battery pack 1 through the detection resistor, the operation circuit is respectively connected with the detector and the real-time monitor in the main control MCU32, the main control MCU32 further comprises a driver, and the main control MCU32 receives the input or output current of the battery pack 1 detected by the operation circuit and drives the charge MOS tube and the discharge MOS tube through the driver. The operation circuit is provided with a comparator which is compared with a set voltage, the comparator outputs an interruption trigger signal of the master control MCU32, the master control MCU32 is also provided with a timer which provides a time signal, when the set charging overcurrent condition is met, the master control MCU32 controls the charging MOS to be turned off, the charging current limiting module is kept to be conducted, so that the charging current limiting module is switched to the current limiting module at the highest speed, the charging MOS is effectively prevented from being burnt out due to large charging current, and secondary charging overcurrent protection and control protection time are carried out according to the time delay of the timer.
The output end of the main control unit 3 is respectively connected with the discharge MOS tube driving unit and the charge MOS tube, the input end of the discharge MOS tube is connected with the B-electrode through a detection resistor, the output end of the discharge MOS tube is connected with the input end of the charge MOS tube and the input end of the charge current-limiting unit, and the output end of the charge current-limiting unit and the output end of the charge MOS tube are connected with the P-electrode.
The battery pack is characterized by further comprising a temperature detection unit and a temperature sensing circuit, wherein the temperature detection unit is used for detecting the temperature of the battery pack 1, and a temperature detector in the temperature detection unit is used for measuring the surface temperature of the single battery cells in the battery pack 1 and transmitting the surface temperature to the main control MCU32 through the temperature sensing circuit.
The intelligent charger control system further comprises a charger access detector, the master control MCU32 further comprises a state monitor, the charger access detector is connected with the state monitor, and the charger access detector identifies the access state of the charger and transmits a charger access signal to the master control MCU32 when detecting that the charger is accessed.
In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a BMS protection shield suitable for on storage battery car, includes group battery (1), current detection control circuit (2) and main control unit (3), its characterized in that: the main control unit (3) comprises a front end AFE circuit (31) and a main control MCU (32) which are connected with each other, and the front end AFE circuit (31) is connected with the battery pack (1) and the main control MCU (32); the current detection control circuit (2) comprises a charging current limiting unit, a charging MOS tube, a discharging MOS tube and a discharging MOS tube driving unit, the current detection control circuit (2) also comprises a detection resistor and an arithmetic circuit unit, a main control MCU (32) is connected with the detection resistor and the arithmetic circuit in series, the main control MCU (32) is connected with the charging current limiting unit, the charging MOS tube, the discharging MOS tube and the discharging MOS tube driving unit, and the charging current limiting unit is connected with the charging MOS tube in parallel; the output end of the main control MCU (32) is connected with a GPS positioning module (33), an LED display module (34), a loudspeaker (35) and a network communication module (36); the main control MCU (32) is internally provided with a storage module, a geographical position range is stored in the storage module, the GPS positioning module (33) transmits a current position signal to the main control MCU (32), and the main control MCU (32) compares the current position signal with the geographical position range in the storage module and reminds a user of positioning deviation or positioning over-range through the LED display module (34), the loudspeaker (35) and the network communication module (36); the master control MCU (32) is also provided with a timing unit for independently controlling the charging MOS tube and the discharging MOS tube to be opened and closed.
2. The BMS protection board suitable for the battery car as set forth in claim 1, wherein: the input end of the detection resistor is connected with the B-electrode, the output end of the detection resistor is connected with the discharge MOS tube, the operation circuit is connected with two ends of the detection resistor, the operation circuit detects the input or output current of the battery pack (1) through the detection resistor, the operation circuit is respectively connected with a detector and a real-time monitor in the main control MCU (32), the main control MCU (32) further comprises a driver, and the main control MCU (32) receives the input or output current of the battery pack (1) detected by the operation circuit and drives the charge MOS tube and the discharge MOS tube through the driver.
3. The BMS protection board suitable for the battery car as set forth in claim 1, wherein: the output end of the main control unit (3) is respectively connected with the discharge MOS tube driving unit and the charge MOS tube, the input end of the discharge MOS tube is connected with the B-electrode through a detection resistor, the output end of the discharge MOS tube is connected with the input end of the charge MOS tube and the input end of the charge current-limiting unit, and the output end of the charge current-limiting unit and the output end of the charge MOS tube are connected with the P-electrode.
4. The BMS protection board suitable for the battery car as set forth in claim 1, wherein: the battery pack temperature detection device is characterized by further comprising a temperature detection unit and a temperature sensing circuit, wherein the temperature detection unit is used for detecting the temperature of the battery pack (1), and a temperature detector in the temperature detection unit is used for measuring the surface temperature of a single battery cell in the battery pack (1) and transmitting the surface temperature to the main control MCU (32) through the temperature sensing circuit.
5. The BMS protection board suitable for the battery car as set forth in claim 1, wherein: the charger access detector is connected with the state monitor, identifies the access state of the charger and transmits a charger access signal to the main control MCU (32) when detecting that the charger is accessed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920609285.7U CN209994127U (en) | 2019-04-29 | 2019-04-29 | BMS protection shield suitable for on storage battery car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920609285.7U CN209994127U (en) | 2019-04-29 | 2019-04-29 | BMS protection shield suitable for on storage battery car |
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| CN209994127U true CN209994127U (en) | 2020-01-24 |
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| CN201920609285.7U Active CN209994127U (en) | 2019-04-29 | 2019-04-29 | BMS protection shield suitable for on storage battery car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555386A (en) * | 2020-04-30 | 2020-08-18 | 科华恒盛股份有限公司 | Power supply product and power supply's battery charging protection circuit |
| CN115158519A (en) * | 2022-08-03 | 2022-10-11 | 江苏华友能源科技有限公司 | Function expansion design scheme for lithium battery protection board of two-wheeled electric vehicle |
-
2019
- 2019-04-29 CN CN201920609285.7U patent/CN209994127U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555386A (en) * | 2020-04-30 | 2020-08-18 | 科华恒盛股份有限公司 | Power supply product and power supply's battery charging protection circuit |
| CN115158519A (en) * | 2022-08-03 | 2022-10-11 | 江苏华友能源科技有限公司 | Function expansion design scheme for lithium battery protection board of two-wheeled electric vehicle |
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