CN107968232A - Wake-up circuit and battery management system - Google Patents
Wake-up circuit and battery management system Download PDFInfo
- Publication number
- CN107968232A CN107968232A CN201711156881.6A CN201711156881A CN107968232A CN 107968232 A CN107968232 A CN 107968232A CN 201711156881 A CN201711156881 A CN 201711156881A CN 107968232 A CN107968232 A CN 107968232A
- Authority
- CN
- China
- Prior art keywords
- wake
- fixed value
- output terminal
- thermistor
- comparator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
Abstract
The present invention is on a kind of wake-up circuit and battery management system, is related to auto industry technical field.The technical solution mainly used for：A kind of wake-up circuit, it includes：The thermistor and the first fixed value resistance being connected between power supply and ground terminal, the first output terminal is provided between the thermistor and first fixed value resistance, the thermistor is used for the temperature for detecting the battery, first output terminal is used to be connected with the management module of battery management system, and voltage signal is transmitted to the management module；Wherein, when the thermistor detects that the temperature of the battery is higher than predetermined value, the voltage signal that the wake-up circuit exports predefined size by first output terminal to the management module is used as wake-up signal.Wake-up circuit of the present invention can be monitored battery temperature under electric automobile key in the case of electricity, avoid the generation of the excessively thermally-induced electric automobile auto-ignition of battery.
Description
Technical field
The present invention relates to auto industry technical field, more particularly to a kind of wake-up circuit and battery management system.
Background technology
At present, in order to protect the living environment of the mankind, the discharge of vehicle exhaust, more and more clean energy resource applications are reduced
Into automobile, the best electric automobile for use electric power energy of wherein development prospect.
Since the drive energy of electric automobile is all from battery, so the safe handling of battery is to influence electric automobile
One key factor of safety, and the battery temperature in electric automobile is to influence a battery key factor safe to use, because
It is lasting excessive for battery temperature, it imply that battery will fail, it is possible to fire risk can be caused.So electric automobile
Battery temperature is detected in real time using battery management system (BMS) in the process of running, when generation temperature is excessive, can be sent out
Go out alarm signal, necessary moment cutoff high output.
When electric automobile is at dead ship condition (electricity under key), battery is also possible to the excessive situation of temperature occur, such as
Internal short-circuit of battery, or battery paradoxical discharge etc..So be also required to be detected the temperature of battery at this time, and battery at this time
Management system in a dormant state, in such a state typically by GPRS remote timings wake up or battery management system itself
Timing wake-up, the battery management system after wake-up carries out the detection of monomer voltage and temperature again, if the temperature of battery is normal
In the range of, then battery management system goes successively to resting state, otherwise sends alarm signal.But timing wake-up needs to set
Timing length, when battery temperature occurs excessive, can not send alarm at the first time, it is possible to when danger occurs, not have also
There is arrival timing length, so battery management system of the prior art effectively can not examine the battery of dead ship condition
Survey, protection cell safety can not be played and protect the purpose of electric automobile safety.
The content of the invention
It is a primary object of the present invention to, there is provided a kind of wake-up circuit and battery management system, technology to be solved are asked
Topic is in electric automobile key power-down state, and the temperature of battery is effectively monitored, avoid because battery temperature is excessive and
The fortuitous event of spontaneous combustion is caused to occur.
The object of the invention to solve the technical problems is realized using following technical scheme.Itd is proposed according to the present invention
A kind of wake-up circuit, it includes：
The thermistor and the first fixed value resistance being connected between power supply and ground terminal, the thermistor and described first
The first output terminal is provided between fixed value resistance, the thermistor is used for the temperature for detecting battery, and first output terminal is used
It is connected in the management module with battery management system, voltage signal is transmitted to the management module；
Wherein, when the thermistor detects that the temperature of the battery is higher than predetermined value, the wake-up circuit passes through
First output terminal exports the voltage signal of predefined size as wake-up signal to the management module.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further.
Preferably, foregoing wake-up circuit, wherein the thermistor is negative tempperature coefficient thermistor, the negative temperature
Coefficient resistance one end is connected with power supply, the other end of the negative tempperature coefficient thermistor and first fixed value resistance
One end connects, the other end ground connection of first fixed value resistance.
Preferably, foregoing wake-up circuit, wherein the thermistor is posive temperature coefficient thermistor, described first is fixed
One end of value resistance is connected with power supply, the other end of first fixed value resistance and one end of the posive temperature coefficient thermistor
Connection, the other end ground connection of the posive temperature coefficient thermistor.
Preferably, foregoing wake-up circuit, wherein the wake-up circuit further includes：Second fixed value resistance, the 3rd definite value electricity
Resistance and comparator, the resistance value of second fixed value resistance is equal with the resistance value of first fixed value resistance, the 3rd definite value
Resistance is set as predetermined resistance value；
Wherein, second fixed value resistance and the 3rd fixed value resistance are connected between power supply and ground terminal, and described
Be provided with the second output terminal between two fixed value resistances and the 3rd fixed value resistance, two electric connecting terminals of the comparator respectively with institute
State power supply to connect with ground terminal, first output terminal and the second output terminal two signal input parts with the comparator respectively
Connection.
Preferably, foregoing wake-up circuit, wherein the thermistor is negative tempperature coefficient thermistor, the negative temperature
Coefficient resistance and first fixed value resistance are connected in turn between power supply and ground terminal, the 3rd fixed value resistance and
Two fixed value resistances are connected in turn between the power supply and ground terminal；
Wherein, first output terminal is connected with the positive signal input terminal of the comparator, second output terminal and institute
State the negative signal input terminal connection of comparator；Or, first output terminal is connected with the negative signal input terminal of the comparator, institute
The second output terminal is stated to be connected with the positive signal input terminal of the comparator.
Preferably, foregoing wake-up circuit, wherein the thermistor is negative tempperature coefficient thermistor, described first is fixed
Value resistance and the negative tempperature coefficient thermistor are connected in turn between power supply and ground terminal, second fixed value resistance and institute
The 3rd fixed value resistance is stated to be connected in turn between the power supply and ground terminal；
Wherein, first output terminal is connected with the negative signal input terminal of the comparator, second output terminal and institute
State the positive signal input terminal connection of comparator；Or, first output terminal is connected with the positive signal input terminal of the comparator, institute
The second output terminal is stated to be connected with the negative signal input terminal of the comparator.
Preferably, foregoing wake-up circuit, wherein the thermistor is posive temperature coefficient thermistor, the positive temperature
Coefficient resistance and first fixed value resistance are connected in turn between power supply and ground terminal, the 3rd fixed value resistance and
Two fixed value resistances are connected in turn between the power supply and ground terminal；
Wherein, first output terminal is connected with the negative signal input terminal of the comparator, second output terminal and institute
State the positive signal input terminal connection of comparator；Or, first output terminal is connected with the positive signal input terminal of the comparator, institute
The second output terminal is stated to be connected with the negative signal input terminal of the comparator.
Preferably, foregoing wake-up circuit, wherein the thermistor is posive temperature coefficient thermistor, described first is fixed
Value resistance and the posive temperature coefficient thermistor are connected in turn between power supply and ground terminal, second fixed value resistance and
Three fixed value resistances are connected in turn between the power supply and ground terminal；
Wherein, first output terminal is connected with the positive signal input terminal of the comparator, second output terminal and institute
State the negative signal input terminal connection of comparator；Or, first output terminal is connected with the negative signal input terminal of the comparator, institute
The second output terminal is stated to be connected with the positive signal input terminal of the comparator.
The object of the invention to solve the technical problems can also be realized using following technical scheme.According to the present invention
A kind of battery management system proposed, it includes：
Management module, the management module are used to be connected with battery；
Wake-up circuit；
The wake-up circuit includes：The thermistor and the first fixed value resistance being connected between power supply and ground terminal, it is described
The first output terminal is provided between thermistor and first fixed value resistance, the thermistor is used for the temperature for detecting battery
Degree, first output terminal are used to be connected with the management module of battery management system, and voltage signal is transmitted to the management module；
Wherein, when the thermistor detects that the temperature of battery is higher than predetermined value, the wake-up circuit passes through described
First output terminal exports the voltage signal of predefined size as wake-up signal to the management module；
First output terminal of the wake-up circuit is connected with management module, and voltage signal is transmitted to the management module；
Wherein, when the voltage signal that the first output terminal of the wake-up circuit is transferred to management module is predefined size,
The management module is waken up.
By above-mentioned technical proposal, wake-up circuit and battery management system of the present invention at least have following advantages：
In technical solution of the present invention, wake-up circuit can send wake-up signal when battery temperature is higher than predetermined value, and will
The wake-up signal is sent to the management module of battery management system.In compared with the prior art, when electric automobile under key it is electric
When, battery management system in a dormant state, in such a state typically by GPRS remote timings wake up or battery management
System itself timing wake-up, the battery management system after wake-up carries out the detection of monomer voltage and temperature again, but timing wake-up needs
Timing length is set, when battery temperature occurs excessive, alarm can not be sent at the first time, it is possible to occur in danger
When, also without timing length is reached, so battery management system of the prior art can not be effectively to the electricity of dead ship condition
Pond is detected, and can not be played protection cell safety and be protected the purpose of electric automobile safety.And wake-up provided by the invention
Circuit, it can be monitored the temperature of battery in dead ship condition, when the temperature of battery changes, in wake-up circuit
The resistance value of thermistor change, the voltage of the first output terminal being connected between thermistor and the first fixed value resistance with
Change, when the temperature of battery is higher than default safety value, be connected between thermistor and the first fixed value resistance first
The voltage of output terminal being capable of wakeup management module, you can battery management system integrally to be waken up, makes battery management system to electricity
Pond is comprehensively detected, if the temperature of battery is higher than preset value, battery management system can be to the control of electric automobile
System sends signal, and then starts the automatic fire extinguisher of electric automobile, can also be to sending alarm on the mobile terminal of user
Signal, prompts user's automobile batteries to be in temperature and crosses high state.To sum up, such as added in battery management system provided by the invention
Wake-up circuit, then battery management system battery can not only be detected when electric automobile powers on operation, can also be in electricity
The temperature of battery is monitored when electric under electrical automobile key, the safe to use of battery is ensure that, it is excessively thermally-induced to avoid battery
The generation of electric automobile auto-ignition.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate attached drawing describe in detail as after.
Brief description of the drawings
Fig. 1 is a kind of structure diagram for wake-up circuit that the embodiment of the present invention provides；
Fig. 2 is the structure diagram for another wake-up circuit that the embodiment of the present invention provides；
Fig. 3 is the structure diagram for another wake-up circuit that the embodiment of the present invention provides；
Fig. 4 is the structure diagram for another wake-up circuit that the embodiment of the present invention provides；
Fig. 5 is the structure diagram for another wake-up circuit that the embodiment of the present invention provides；
Fig. 6 is the structure diagram for another wake-up circuit that the embodiment of the present invention provides.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Attached drawing and preferred embodiment, to according to wake-up circuit proposed by the present invention and battery management system, its embodiment, side
Method, structure, feature and its effect, describe in detail as after.In the following description, different " embodiment " or " embodiment " refers to
It is not necessarily the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by any suitable shapes
Formula combines.
Embodiment one
A kind of wake-up circuit that the embodiment of the present invention one proposes, it includes being connected on the temperature-sensitive between power supply and ground terminal
Resistance and the first fixed value resistance, are provided with the first output terminal between thermistor and the first fixed value resistance, thermistor is used to examine
The temperature of battery is surveyed, the first output terminal is used to be connected with the management module of battery management system, and electricity is transmitted to the management module
Press signal；Wherein, when thermistor detects that the temperature of battery is higher than predetermined value, wake-up circuit is by the first output terminal to pipe
The voltage signal of module output predefined size is managed as wake-up signal.
Specifically, the thermistor in wake-up circuit needs to be arranged on battery, it is preferably disposed on what battery most easily generated heat
Position, is then connected in wake-up circuit by connection wire；Wake-up circuit can be only by thermistor and the first definite value electricity
The circuit of composition is hindered, the resistance value of the first fixed value resistance determines that the first output terminal is conveyed to management by the battery-heating temperature set
The wake-up signal of module is voltage signal, can be that analog signal can also be high and low level signal；When the temperature of battery reaches
During alarm value, under the action of cell heat corresponding change in resistance occurs for thermistor, the output of the first output terminal is called out
The voltage signal of the predefined size of awake battery management system.Wake-up circuit can directly use the battery of electric automobile as electricity
Source or the power supply being separately provided, such as a single non-battery for being used to drive electric automobile.
In technical solution of the present invention, wake-up circuit can send wake-up signal when battery temperature is higher than predetermined value, and will
The wake-up signal is sent to the management module of battery management system.In compared with the prior art, when electric automobile under key it is electric
When, battery management system in a dormant state, in such a state typically by GPRS remote timings wake up or battery management
System itself timing wake-up, the battery management system after wake-up carries out the detection of monomer voltage and temperature again, but timing wake-up needs
Timing length is set, when battery temperature occurs excessive, alarm can not be sent at the first time, it is possible to occur in danger
When, also without timing length is reached, so battery management system of the prior art can not be effectively to the electricity of dead ship condition
Pond is detected, and can not be played protection cell safety and be protected the purpose of electric automobile safety.And wake-up provided by the invention
Circuit, it can be monitored the temperature of battery in dead ship condition, when the temperature of battery changes, in wake-up circuit
The resistance value of thermistor change, the voltage of the first output terminal being connected between thermistor and the first fixed value resistance with
Change, when the temperature of battery is higher than default safety value, be connected between thermistor and the first fixed value resistance first
The voltage of output terminal being capable of wakeup management module, you can battery management system integrally to be waken up, makes battery management system to electricity
Pond is comprehensively detected, if the temperature of battery is higher than preset value, battery management system can be to the control of electric automobile
System sends signal, and then starts the automatic fire extinguisher of electric automobile, can also be to sending alarm on the mobile terminal of user
Signal, prompts user's automobile batteries to be in temperature and crosses high state.To sum up, such as added in battery management system provided by the invention
Wake-up circuit, then battery management system battery can not only be detected when electric automobile powers on operation, can also be in electricity
The temperature of battery is monitored when electric under electrical automobile key, the safe to use of battery is ensure that, it is excessively thermally-induced to avoid battery
The generation of electric automobile auto-ignition.
Among specific implementation, wherein thermistor can be negative tempperature coefficient thermistor (NTC) or positive temperature system
Number thermistor, the wake-up circuit when thermistor is negative tempperature coefficient thermistor is as shown in Figure 1, wherein negative temperature coefficient is warm
Quick resistance R4 one end is connected with power supply VBAT, one end of the other end of negative tempperature coefficient thermistor R4 and the first fixed value resistance R3
Connection, the other end ground connection of the first fixed value resistance R3；When thermistor is posive temperature coefficient thermistor, wake-up circuit is as schemed
Shown in 2, wherein one end of the first fixed value resistance R3 is connected with power supply VBAT, the other end of the first fixed value resistance R3 and positive temperature system
One end connection of number thermistor R5, the other end ground connection of posive temperature coefficient thermistor R5.
Specifically, when thermistor is negative tempperature coefficient thermistor, the signal of the first output terminal output as shown in Figure 1
It is voltage signal of the loading on the first fixed value resistance, when battery temperature raises, the resistance value drop of negative tempperature coefficient thermistor
Low, voltage rise of the corresponding loading on the first fixed value resistance, the voltage rise of the first output terminal output so can be by pipe
The wake-up voltage of reason module is arranged to predetermined value, such as 5v, and battery temperature during by wakeup management module is also set to predetermined value,
Such as 50 degree, and according to the changing rule of negative tempperature coefficient thermistor resistance value in temperature change, by the first fixed value resistance
Resistance value is set as predetermined value, ensures, when battery temperature rises to the temperature for needing wakeup management module, to load in the first definite value
Ohmically voltage is the voltage of wakeup management module, and then realizes that wake-up circuit wakes up pipe when battery temperature is increased to predetermined value
Manage the purpose of module.Similarly, when thermistor is posive temperature coefficient thermistor, first can also be determined according to specific needs
Value resistance is arranged to required size.
Among specific implementation, in order to accurately set wake-up temperature, make wake-up circuit in the wake-up temperature of setting
Lower wakeup management module, wake-up circuit can also include：Second fixed value resistance, the 3rd fixed value resistance and comparator, second is fixed
The resistance value of value resistance is equal with the resistance value of the first fixed value resistance, and the 3rd fixed value resistance is set as predetermined resistance value；Wherein, the second definite value
Resistance and the 3rd fixed value resistance are connected between power supply and ground terminal, are provided between the second fixed value resistance and the 3rd fixed value resistance
Second output terminal, two electric connecting terminals of comparator are connected with power supply and ground terminal respectively, the first output terminal and the second output terminal
It is connected respectively with two signal input parts of comparator.
Specifically, wake-up circuit can carry out the output of wake-up signal by the way of voltage compares using comparator, its
In the 3rd customization resistance according to thermistor variation with temperature situation can be arranged to setting value, make the 3rd customization resistance
Setting value is more than or equal to resistance value of the thermistor under normal temperature state, and such first output terminal and the second output terminal are in room temperature
Under be conveyed to the voltage signal of comparator, a high level or low level can be exported after comparison, can set and send out at this time
The high level or low level gone out is non-wake-up signal；When battery temperature is increased to the temperature for needing wakeup management module, the
One output terminal and the second output terminal are conveyed to the voltage signal of comparator, can be exported after comparison opposite with non-wake-up signal
The low level either wake-up signal of low level or high level as wakeup management module of high level at this time.
Among specific implementation, wherein wake-up circuit adds the second fixed value resistance, the 3rd fixed value resistance and comparator
Afterwards, the connection mode of wake-up circuit can be using as shown in figure 3, when thermistor is negative tempperature coefficient thermistor, negative temperature
Coefficient resistance R4 and the first fixed value resistance R3 are connected in turn between power supply VBAT and ground terminal GND, the 3rd fixed value resistance
R2 and the second fixed value resistance R1 are connected in turn between power supply VBAT and ground terminal GND；Wherein, the first output terminal and comparator
Positive signal input terminal connects, and the negative signal input terminal of the second output terminal and comparator connects；Or first output terminal and comparator
Negative signal input terminal connects, and the positive signal input terminal of the second output terminal and comparator connects.
Specifically, the resistance value of the 3rd fixed value resistance needs to be less than resistance of the negative tempperature coefficient thermistor under normal temperature state
Value, is connected when using the positive signal input terminal of the first output terminal and comparator, and the negative signal of the second output terminal and comparator inputs
After the connection mode for holding connection, when battery temperature is no more than the temperature for needing wakeup management module, comparator output to be low
Level, low level is non-wake-up signal at this time, when battery temperature is higher than the temperature for needing wakeup management module, comparator output
For high level, high level is wake-up signal at this time.In addition, connect when using the negative signal input terminal of the first output terminal and comparator
Connect, during the connection mode of the positive signal input terminal of the second output terminal and comparator connection, the high level of comparator output is called out to be non-
Awake signal, the low level of comparator output is wake-up signal.
Further, after wherein wake-up circuit adds the second fixed value resistance, the 3rd fixed value resistance and comparator, heat
When quick resistance is negative tempperature coefficient thermistor, the connection mode of wake-up circuit can be with as shown in figure 4, the first fixed value resistance R3
It is connected in turn with negative tempperature coefficient thermistor R4 between power supply VBAT and ground terminal GND, the second fixed value resistance R1 and the 3rd
Fixed value resistance R2 is connected in turn between power supply VBAT and ground terminal GND；Wherein, the negative signal of the first output terminal and comparator is defeated
Enter end connection, the positive signal input terminal connection of the second output terminal and comparator；Or, first output terminal and comparator positive signal it is defeated
Enter end connection, the negative signal input terminal connection of the second output terminal and comparator.
Specifically, the operation principle of wake-up circuit shown in Fig. 4 is identical with the operation principle of wake-up circuit in Fig. 3, herein
Repeat no more.Using wake-up circuit shown in Fig. 4, connected when using the negative signal input terminal of the first output terminal and comparator, the
During the connection mode of the positive signal input terminal of two output terminals and comparator connection, the high level of comparator output is wake-up signal；
Connected when using the positive signal input terminal of the first output terminal and comparator, the negative signal input terminal of the second output terminal and comparator connects
During the connection mode connect, the low level of comparator output is wake-up signal.
Among specific implementation, wherein wake-up circuit adds the second fixed value resistance, the 3rd fixed value resistance and comparator
Afterwards, when thermistor is posive temperature coefficient thermistor, the connection mode of wake-up circuit can be with as shown in figure 5, temperature-sensitive be electric
Hinder and be connected to power supply in turn for posive temperature coefficient thermistor R5, posive temperature coefficient thermistor R5 and the first fixed value resistance R3
Between VBAT and ground terminal GND, the 3rd fixed value resistance R2 and the second fixed value resistance R1 are connected to power supply VBAT and ground terminal in turn
Between GND；Wherein, the negative signal input terminal of the first output terminal and comparator connects, the positive signal of the second output terminal and comparator
Input terminal connects；Or, first the positive signal input terminal of output terminal and comparator connect, the negative signal of the second output terminal and comparator
Input terminal connects.
Specifically, the resistance value of the 3rd fixed value resistance needs to be more than resistance of the posive temperature coefficient thermistor under normal temperature state
Value, is connected when using the negative signal input terminal of the first output terminal and comparator, and the positive signal of the second output terminal and comparator inputs
After the connection mode for holding connection, when battery temperature is no more than the temperature for needing wakeup management module, comparator output to be low
Level, low level is non-wake-up signal at this time, when battery temperature is higher than the temperature for needing wakeup management module, comparator output
For high level, high level is wake-up signal at this time.Connected when using the positive signal input terminal of the first output terminal and comparator, the
During the connection mode of the negative signal input terminal of two output terminals and comparator connection, the high level of comparator output is believed for non-wake up
Number, the low level of comparator output is wake-up signal.
Further, after wherein wake-up circuit adds the second fixed value resistance, the 3rd fixed value resistance and comparator, when
When thermistor is posive temperature coefficient thermistor, the connection mode of wake-up circuit can be with as shown in fig. 6, the first fixed value resistance R3
It is connected in turn with posive temperature coefficient thermistor R5 between power supply VBAT and ground terminal GND, the second fixed value resistance R1 and the 3rd
Fixed value resistance R2 is connected in turn between power supply VBAT and ground terminal GND；Wherein, the positive signal of the first output terminal and comparator is defeated
Enter end connection, the negative signal input terminal connection of the second output terminal and comparator；Or, first output terminal and comparator negative signal it is defeated
Enter end connection, the positive signal input terminal connection of the second output terminal and comparator.
Specifically, the operation principle of wake-up circuit shown in Fig. 6 is identical with the operation principle of wake-up circuit in Fig. 5, herein
Repeat no more.Using wake-up circuit shown in Fig. 6, connected when using the positive signal input terminal of the first output terminal and comparator, the
During the connection mode of the negative signal input terminal of two output terminals and comparator connection, the high level of comparator output is wake-up signal；
Connected when using the negative signal input terminal of the first output terminal and comparator, the positive signal input terminal of the second output terminal and comparator connects
During the connection mode connect, the low level of comparator output is wake-up signal.
Among specific implementation, wherein in order to protect wake-up circuit to may be referred to protect the setting side of capacitance in the prior art
Formula, sets protection capacitance in wake-up circuit.
Embodiment two
A kind of battery management system that the embodiment of the present invention two proposes, it includes：Management module and wake-up circuit；Management
Module is used to be connected with battery；Wake-up circuit includes：The thermistor being connected between power supply and ground terminal and the first definite value electricity
Resistance, is provided with the first output terminal between thermistor and the first fixed value resistance, thermistor is used for the temperature for detecting battery, and first
Output terminal is used to be connected with the management module of battery management system, and voltage signal is transmitted to management module；Wherein, thermistor is worked as
When detecting that the temperature of battery is higher than predetermined value, wake-up circuit exports predefined size by the first output terminal to the management module
Voltage signal as wake-up signal；First output terminal of wake-up circuit is connected with management module, and voltage is transmitted to management module
Signal；Wherein, when the voltage signal that the first output terminal of wake-up circuit is transferred to management module is predefined size, management module
It is waken up.
Specifically, the wake-up electricity of the offer of above-described embodiment one can be used directly in the wake-up circuit described in the present embodiment two
Road, concrete implementation structure can be found in the related content described in above-described embodiment one, and details are not described herein again.Management module can be with
Possesses the repertoire of wake-up circuit in the prior art, the setting of its structure may be referred to wake-up circuit of the prior art and carry out
Setting, details are not described herein again；The function of management module includes the function being detected to the physical parameter of battery, such as detection electricity
Capacity, internal resistance and the monomer voltage in pond etc.；The function of management module further includes each work shape when working battery discharge
State parameter is detected, such as discharge current during detection battery work, voltage, temperature, state-of-charge, discharge-rate and is put
Electric depth etc.；The function of management module further includes the charging and discharging of management battery, prevents overcharging and putting excessively for battery, and will
The operating status of battery sends entire car controller of electric automobile etc. to；Management module need be connected with battery, and with it is electronic
The control system connection of automobile.
In technical solution of the present invention, wake-up circuit can send wake-up signal when battery temperature is higher than predetermined value, and will
The wake-up signal is sent to the management module of battery management system.In compared with the prior art, when electric automobile under key it is electric
When, battery management system in a dormant state, in such a state typically by GPRS remote timings wake up or battery management
System itself timing wake-up, the battery management system after wake-up carries out the detection of monomer voltage and temperature again, but timing wake-up needs
Timing length is set, when battery temperature occurs excessive, alarm can not be sent at the first time, it is possible to occur in danger
When, also without timing length is reached, so battery management system of the prior art can not be effectively to the electricity of dead ship condition
Pond is detected, and can not be played protection cell safety and be protected the purpose of electric automobile safety.And wake-up provided by the invention
Circuit, it can be monitored the temperature of battery in dead ship condition, when the temperature of battery changes, in wake-up circuit
The resistance value of thermistor change, the voltage of the first output terminal being connected between thermistor and the first fixed value resistance with
Change, when the temperature of battery is higher than default safety value, be connected between thermistor and the first fixed value resistance first
The voltage of output terminal being capable of wakeup management module, you can battery management system integrally to be waken up, makes battery management system to electricity
Pond is comprehensively detected, if the temperature of battery is higher than preset value, battery management system can be to the control of electric automobile
System sends signal, and then starts the automatic fire extinguisher of electric automobile, can also be to sending alarm on the mobile terminal of user
Signal, prompts user's automobile batteries to be in temperature and crosses high state.To sum up, such as added in battery management system provided by the invention
Wake-up circuit, then battery management system battery can not only be detected when electric automobile powers on operation, can also be in electricity
The temperature of battery is monitored when electric under electrical automobile key, the safe to use of battery is ensure that, it is excessively thermally-induced to avoid battery
The generation of electric automobile auto-ignition.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, according to
Any simple modification, equivalent change and modification made according to the technical spirit of the present invention to above example, still falls within this hair
In the range of bright technical solution.
Claims (9)
1. a kind of wake-up circuit, it is characterised in that it includes：
The thermistor and the first fixed value resistance being connected between power supply and ground terminal, the thermistor and first definite value
Be provided with the first output terminal between resistance, the thermistor is used for the temperature for detecting battery, first output terminal be used for
The management module connection of battery management system, voltage signal is transmitted to the management module；
Wherein, when the thermistor detects that the temperature of battery is higher than predetermined value, the wake-up circuit passes through described first
Output terminal exports the voltage signal of predefined size as wake-up signal to the management module.
2. the wake-up circuit according to claim 1, it is characterised in that
The thermistor is negative tempperature coefficient thermistor, and described negative tempperature coefficient thermistor one end is connected with power supply, institute
The other end for stating negative tempperature coefficient thermistor is connected with one end of first fixed value resistance, first fixed value resistance it is another
One end is grounded.
3. the wake-up circuit according to claim 1, it is characterised in that
The thermistor is posive temperature coefficient thermistor, and one end of first fixed value resistance is connected with power supply, described
The other end of certain value resistance is connected with one end of the posive temperature coefficient thermistor, the posive temperature coefficient thermistor
The other end is grounded.
4. the wake-up circuit according to claim 1, it is characterised in that the wake-up circuit further includes：
Second fixed value resistance, the 3rd fixed value resistance and comparator, the resistance value of second fixed value resistance and first definite value
The resistance value of resistance is equal, and the 3rd fixed value resistance is set as predetermined resistance value；
Wherein, second fixed value resistance and the 3rd fixed value resistance are connected between power supply and ground terminal, and described second is fixed
Be provided with the second output terminal between value resistance and the 3rd fixed value resistance, two electric connecting terminals of the comparator respectively with the electricity
Source is connected with ground terminal, and first output terminal and the second output terminal connect with two signal input parts of the comparator respectively
Connect.
5. the wake-up circuit according to claim 4, it is characterised in that
The thermistor is negative tempperature coefficient thermistor, the negative tempperature coefficient thermistor and first fixed value resistance
Be connected in turn between power supply and ground terminal, the 3rd fixed value resistance and the second fixed value resistance be connected in turn the power supply with
Between ground terminal；
Wherein, first output terminal is connected with the positive signal input terminal of the comparator, second output terminal and the ratio
Negative signal input terminal compared with device connects；Or, first output terminal is connected with the negative signal input terminal of the comparator, described
Two output terminals are connected with the positive signal input terminal of the comparator.
6. the wake-up circuit according to claim 4, it is characterised in that
The thermistor is negative tempperature coefficient thermistor, first fixed value resistance and the negative tempperature coefficient thermistor
It is connected in turn between power supply and ground terminal, second fixed value resistance is connected to the electricity in turn with the 3rd fixed value resistance
Between source and ground terminal；
Wherein, first output terminal is connected with the negative signal input terminal of the comparator, second output terminal and the ratio
Positive signal input terminal compared with device connects；Or, first output terminal is connected with the positive signal input terminal of the comparator, described
Two output terminals are connected with the negative signal input terminal of the comparator.
7. the wake-up circuit according to claim 4, it is characterised in that
The thermistor is posive temperature coefficient thermistor, the posive temperature coefficient thermistor and first fixed value resistance
Be connected in turn between power supply and ground terminal, the 3rd fixed value resistance and the second fixed value resistance be connected in turn the power supply with
Between ground terminal；
Wherein, first output terminal is connected with the negative signal input terminal of the comparator, second output terminal and the ratio
Positive signal input terminal compared with device connects；Or, first output terminal is connected with the positive signal input terminal of the comparator, described
Two output terminals are connected with the negative signal input terminal of the comparator.
8. the wake-up circuit according to claim 4, it is characterised in that
The thermistor is posive temperature coefficient thermistor, first fixed value resistance and the posive temperature coefficient thermistor
Be connected in turn between power supply and ground terminal, second fixed value resistance and the 3rd fixed value resistance be connected in turn the power supply with
Between ground terminal；
Wherein, first output terminal is connected with the positive signal input terminal of the comparator, second output terminal and the ratio
Negative signal input terminal compared with device connects；Or, first output terminal is connected with the negative signal input terminal of the comparator, described
Two output terminals are connected with the positive signal input terminal of the comparator.
9. a kind of battery management system, it is characterised in that it includes：
Management module, the management module are used to be connected with battery；
Any wake-up circuit in the claims 1-8, the first output terminal of the wake-up circuit are connected with management module,
Voltage signal is transmitted to the management module；
Wherein, it is described when the voltage signal that the first output terminal of the wake-up circuit is transferred to management module is predefined size
Management module is waken up.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711156881.6A CN107968232A (en) | 2017-11-20 | 2017-11-20 | Wake-up circuit and battery management system |
| PCT/CN2018/114385 WO2019096049A1 (en) | 2017-11-20 | 2018-11-07 | Wake-up circuit and battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711156881.6A CN107968232A (en) | 2017-11-20 | 2017-11-20 | Wake-up circuit and battery management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107968232A true CN107968232A (en) | 2018-04-27 |
Family
ID=62001286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711156881.6A Pending CN107968232A (en) | 2017-11-20 | 2017-11-20 | Wake-up circuit and battery management system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107968232A (en) |
| WO (1) | WO2019096049A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019096049A1 (en) * | 2017-11-20 | 2019-05-23 | 北京长城华冠汽车科技股份有限公司 | Wake-up circuit and battery management system |
| CN109955737A (en) * | 2019-04-28 | 2019-07-02 | 广州小鹏汽车科技有限公司 | Temperature of powered cell control device, method and electric car |
| CN109980718A (en) * | 2019-03-01 | 2019-07-05 | 安徽力高新能源技术有限公司 | A kind of standby low-loss battery management system |
| CN110967634A (en) * | 2019-05-17 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Temperature detection circuit, temperature detection method and battery management system |
| CN110967635A (en) * | 2019-05-17 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Temperature detection circuit, temperature detection method and battery management system |
| CN111044912A (en) * | 2018-10-12 | 2020-04-21 | 宁德时代新能源科技股份有限公司 | Dormancy monitoring system and method |
| CN111907329A (en) * | 2020-06-29 | 2020-11-10 | 东风汽车集团有限公司 | Monitoring system and monitoring method capable of carrying out power battery full-time thermal runaway early warning |
| CN111959345A (en) * | 2020-07-23 | 2020-11-20 | 蜂巢能源科技有限公司 | Battery state monitoring circuit, method, device and system and vehicle |
| CN113161635A (en) * | 2021-04-26 | 2021-07-23 | 东方醒狮储能电池有限公司 | Lithium power battery pack thermal monitoring management system based on radio frequency induction |
| CN113147478A (en) * | 2021-04-26 | 2021-07-23 | 东方醒狮储能电池有限公司 | Electric automobile power supply management system based on radio frequency induction |
| CN113448638A (en) * | 2021-07-12 | 2021-09-28 | 度普(苏州)新能源科技有限公司 | Awakening source identification method and device |
| CN113696779A (en) * | 2020-05-22 | 2021-11-26 | 惠州比亚迪电池有限公司 | Battery pack monitoring method and system, automobile and computer equipment |
| CN114384843B (en) * | 2021-12-31 | 2024-03-29 | 厦门芯阳科技股份有限公司 | Circuit with wake-up and detection functions and electronic equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115023842A (en) * | 2020-11-03 | 2022-09-06 | 株式会社Lg新能源 | Battery rack management device |
| DE102021100768A1 (en) | 2021-01-15 | 2022-07-21 | Audi Aktiengesellschaft | Measurement circuit for a battery module, battery module and method for monitoring a battery module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373893A (en) * | 2007-08-24 | 2009-02-25 | 鹏智科技(深圳)有限公司 | Over temperature protection circuit for battery |
| CN203672513U (en) * | 2013-08-28 | 2014-06-25 | 东莞赛微微电子有限公司 | Temperature detection circuit and electronic device |
| CN104362595A (en) * | 2014-11-10 | 2015-02-18 | 深圳市卓能新能源科技有限公司 | Battery pack power supply circuit capable of achieving over-temperature protection |
| CN104634472A (en) * | 2013-11-07 | 2015-05-20 | 中兴通讯股份有限公司 | Terminal battery temperature detection device, terminal, and terminal battery over-temperature protection method |
| CN205610288U (en) * | 2016-05-11 | 2016-09-28 | 江苏博强新能源科技有限公司 | Battery management device with protection of hardware second grade |
| CN206339636U (en) * | 2016-11-25 | 2017-07-18 | 深圳市诚业通信技术有限公司 | Uninterrupted power source detecting system for IDC |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968232A (en) * | 2017-11-20 | 2018-04-27 | 北京长城华冠汽车科技股份有限公司 | Wake-up circuit and battery management system |
-
2017
- 2017-11-20 CN CN201711156881.6A patent/CN107968232A/en active Pending
-
2018
- 2018-11-07 WO PCT/CN2018/114385 patent/WO2019096049A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373893A (en) * | 2007-08-24 | 2009-02-25 | 鹏智科技(深圳)有限公司 | Over temperature protection circuit for battery |
| CN203672513U (en) * | 2013-08-28 | 2014-06-25 | 东莞赛微微电子有限公司 | Temperature detection circuit and electronic device |
| CN104634472A (en) * | 2013-11-07 | 2015-05-20 | 中兴通讯股份有限公司 | Terminal battery temperature detection device, terminal, and terminal battery over-temperature protection method |
| CN104362595A (en) * | 2014-11-10 | 2015-02-18 | 深圳市卓能新能源科技有限公司 | Battery pack power supply circuit capable of achieving over-temperature protection |
| CN205610288U (en) * | 2016-05-11 | 2016-09-28 | 江苏博强新能源科技有限公司 | Battery management device with protection of hardware second grade |
| CN206339636U (en) * | 2016-11-25 | 2017-07-18 | 深圳市诚业通信技术有限公司 | Uninterrupted power source detecting system for IDC |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019096049A1 (en) * | 2017-11-20 | 2019-05-23 | 北京长城华冠汽车科技股份有限公司 | Wake-up circuit and battery management system |
| CN111044912B (en) * | 2018-10-12 | 2021-10-01 | 宁德时代新能源科技股份有限公司 | Dormancy monitoring system and method |
| CN111044912A (en) * | 2018-10-12 | 2020-04-21 | 宁德时代新能源科技股份有限公司 | Dormancy monitoring system and method |
| CN109980718A (en) * | 2019-03-01 | 2019-07-05 | 安徽力高新能源技术有限公司 | A kind of standby low-loss battery management system |
| CN109955737A (en) * | 2019-04-28 | 2019-07-02 | 广州小鹏汽车科技有限公司 | Temperature of powered cell control device, method and electric car |
| CN109955737B (en) * | 2019-04-28 | 2021-10-12 | 广州小鹏汽车科技有限公司 | Power battery temperature control device and method and electric automobile |
| CN110967635A (en) * | 2019-05-17 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Temperature detection circuit, temperature detection method and battery management system |
| CN110967634A (en) * | 2019-05-17 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Temperature detection circuit, temperature detection method and battery management system |
| CN113696779A (en) * | 2020-05-22 | 2021-11-26 | 惠州比亚迪电池有限公司 | Battery pack monitoring method and system, automobile and computer equipment |
| CN111907329A (en) * | 2020-06-29 | 2020-11-10 | 东风汽车集团有限公司 | Monitoring system and monitoring method capable of carrying out power battery full-time thermal runaway early warning |
| CN111907329B (en) * | 2020-06-29 | 2022-04-29 | 东风汽车集团有限公司 | Monitoring system and monitoring method capable of carrying out power battery full-time thermal runaway early warning |
| CN111959345A (en) * | 2020-07-23 | 2020-11-20 | 蜂巢能源科技有限公司 | Battery state monitoring circuit, method, device and system and vehicle |
| CN113161635A (en) * | 2021-04-26 | 2021-07-23 | 东方醒狮储能电池有限公司 | Lithium power battery pack thermal monitoring management system based on radio frequency induction |
| CN113147478A (en) * | 2021-04-26 | 2021-07-23 | 东方醒狮储能电池有限公司 | Electric automobile power supply management system based on radio frequency induction |
| CN113161635B (en) * | 2021-04-26 | 2024-02-06 | 东方醒狮储能电池有限公司 | Lithium power battery pack thermal monitoring management system based on radio frequency induction |
| CN113147478B (en) * | 2021-04-26 | 2024-04-16 | 东方醒狮储能电池有限公司 | Electric automobile power supply management system based on radio frequency induction |
| CN113448638A (en) * | 2021-07-12 | 2021-09-28 | 度普(苏州)新能源科技有限公司 | Awakening source identification method and device |
| CN113448638B (en) * | 2021-07-12 | 2023-07-28 | 度普(苏州)新能源科技有限公司 | Awakening source identification method and device |
| CN114384843B (en) * | 2021-12-31 | 2024-03-29 | 厦门芯阳科技股份有限公司 | Circuit with wake-up and detection functions and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019096049A1 (en) | 2019-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107968232A (en) | Wake-up circuit and battery management system | |
| CN111114328A (en) | Thermal runaway early warning method, device and system for power storage battery of electric automobile | |
| US7115332B2 (en) | Power supply unit | |
| CN109017309A (en) | A kind of control system for accumulators, battery system and vehicle for electric car | |
| CN102479983B (en) | For charge control method and the device of electric automobile power battery | |
| CN108711893A (en) | A kind of power battery thermal runaway early warning system and method | |
| CN106364426A (en) | Automobile starting and stopping protective system and method | |
| CN103311965B (en) | Batteries in parallel connection group discharge and recharge intelligent management apapratus and method | |
| CN112977160B (en) | Battery management method, battery system, vehicle, and computer storage medium | |
| CN208232982U (en) | A kind of monitoring device and automobile of accumulator electric-quantity | |
| CN112014617B (en) | Method, device and system for testing quiescent current of whole vehicle | |
| JP2018518142A (en) | Battery pack charge control apparatus and method | |
| CN204928285U (en) | Banked battery's controlling means and electric motor car | |
| CN104734214A (en) | Portable device and charging and discharging control method thereof | |
| CN111823866A (en) | Inspection control method and device for high-voltage power storage battery of electric automobile | |
| CN202455122U (en) | Device for intelligently managing charge-discharge of battery group in parallel | |
| CN101714766B (en) | Battery high-temperature status prevention and protection method and system | |
| CN105048010A (en) | Method and system for monitoring battery pack of electric automobile | |
| CN203827020U (en) | Electric automobile lithium battery charger with overcharge protection | |
| CN105428739B (en) | Charging battery method and device, automobile | |
| CN214957035U (en) | Power battery system and electric automobile | |
| CN115425729A (en) | Photovoltaic-adaptive BMS charging method, equipment, device, controller and storage medium | |
| CN111137150A (en) | Charging control method and vehicle-mounted charger | |
| CN208723604U (en) | The battery management system of function is used with classification | |
| CN208393225U (en) | A kind of vehicle complete vehicle circuit protection prior-warning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180427 |