CN108196176A - The Insulation monitoring warning device and its method of a kind of battery pack - Google Patents
The Insulation monitoring warning device and its method of a kind of battery pack Download PDFInfo
- Publication number
- CN108196176A CN108196176A CN201810171015.2A CN201810171015A CN108196176A CN 108196176 A CN108196176 A CN 108196176A CN 201810171015 A CN201810171015 A CN 201810171015A CN 108196176 A CN108196176 A CN 108196176A
- Authority
- CN
- China
- Prior art keywords
- battery pack
- leakage condition
- anode
- module
- cathode
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The present invention provides a kind of Insulation monitoring warning devices.The Insulation monitoring warning device includes：AC power, for generating AC signal, one end ground connection of the AC power；Fixed value resistance, one end of the fixed value resistance are connected with the other end of the AC power；Definite value capacitance for completely cutting off the DC voltage of battery pack, is connected with the other end of the fixed value resistance；The definite value capacitance is selectively connected serially to the positive or negative pole of the battery pack by selecting module；Control module, the control module and the AC power source, control the AC power to generate AC signal；The control module and the selecting module couple, and control the selecting module that the definite value capacitance is selectively connected serially to the positive or negative pole of the battery pack；The voltage of voltage acquisition point of the control module detection between the fixed value resistance and the definite value capacitance and the voltage value based on the voltage acquisition point calculate the insulating resistance value of access to judge battery pack whether in leakage condition；And alarm module, the control module couple with the alarm module and the alarm module are controlled to send warning signal in response to leakage condition.
Description
Technical field
The present invention relates to the insulation inspections of a kind of pure electric vehicle power system more particularly to a kind of pure electric automobile battery pack
Measuring alarming device and its method.
Background technology
With the exacerbation of Global Environmental Problems, as a kind of new energy walking-replacing tool, fully met makes pure electric automobile
Requirement of the user for convenient and pollution-free aspect of going on a journey.Since the automobile of high-speed cruising needs great mechanical energy as power
Source, and pure electric automobile drives mechanical braking using power battery, thus the existing electrical automobile that conducts electricity be respectively provided with voltage compared with
High battery pack is as dynamical system, since the metal framework of vehicle body is the good conductor of electricity, if the battery pack of high voltage has leakage
Electric situation, then entire vehicle body can charge, it is not single to influence vehicle operation and even influence the safety of user, therefore to pure electric automobile
Dynamical system carry out insulating properties detection be pure electric automobile indispensability function.
Currently for high-tension battery packet insulation detecting method there are many kinds of, wherein more commonly used mainly has balanced bridge
Method and low frequency injection method.Balanced bridge method can only carry out under the non-charge and discharge state of battery pack, and battery pack must high pressure connection
Logical, safety and practicability are poor；Low frequency injection method can measure insulation resistance effectively in real time under various operating modes, and shortcoming is
Its measure resistance be battery pack positive and negative electrode insulation against ground resistance parallel equivalent value, can not independent measurement positive and negative anodes independence
Insulation against ground resistance moreover, under battery pack high pressure off-position (such as MSD disconnections), can only measure battery pack positive and negative electrode over the ground
One of value of insulation resistance.In fact, there are different grades even batteries for the insulating properties of battery pack positive and negative electrode over the ground
Packet positive and negative electrode there is a situation where while leak electricity, it is therefore desirable to detect the insulation resistance of battery pack positive electrode and negative electrode over the ground respectively
Value.
To solve the above problems, the present invention provides a kind of insulation detection device and its method of battery pack, can realize pair
The independent measurement of battery pack positive and negative electrode insulation resistance；Meanwhile the shape that can be insulated in the maintenance of battery pack power-off with complete detection
State in time generates alarm signal and a series of control signals is taken to complete the purpose of omnibearing protection personnel safety.
Invention content
In order to overcome drawbacks described above, the present invention is intended to provide a kind of Insulation monitoring of battery pack suitable for pure electric automobile
Warning device and its method.
According to an aspect of the present invention, a kind of Insulation monitoring warning device is provided, including：AC power, for generating
AC signal, one end ground connection of the AC power；Fixed value resistance, one end of the fixed value resistance are another with the AC power
It connects one end；Definite value capacitance for completely cutting off the DC voltage of battery pack, is connected with the other end of the fixed value resistance；Select mould
The definite value capacitance is selectively connected serially to the positive or negative pole of the battery pack by block；Control module, the control module with
The AC power source controls the AC power to generate AC signal；The control module is coupled with the selecting module,
And control the selecting module that the definite value capacitance is selectively connected serially to the positive or negative pole of the battery pack；The control
The voltage of voltage acquisition point of the module detection between the fixed value resistance and the definite value capacitance is simultaneously adopted based on the voltage
The voltage value of collection point calculates the insulating resistance value of access to judge battery pack whether in leakage condition；And alarm module, institute
Control module is stated to couple with the alarm module and the alarm module is controlled to send warning signal in response to leakage condition.
Further, the control module controls the selecting module when the battery pack is in running order by institute
Any one that definite value capacitance is connected serially in the anode or cathode of the battery pack is stated to calculate the anode pair of the battery pack
The parallel value of the insulation resistance of the insulation resistance on ground and the cathode of the battery pack over the ground；And the control module is based on described
The parallel value of the insulation resistance of the anode of battery pack insulation resistance over the ground and the cathode of the battery pack over the ground is less than default threshold
Value judges that the battery pack is in leakage condition in parallel.
Further, the control module controls the selecting module string when the battery pack is in off working state
Join the anode of the definite value capacitance and the battery pack to calculate the insulating resistance value of the anode of the battery pack over the ground；And institute
It states the insulating resistance value of anode of the control module based on the battery pack over the ground and judges that the battery pack is in less than predetermined threshold value
Anode leakage condition.
Further, the control module controls the selecting module string when the battery pack is in off working state
Join the cathode of the definite value capacitance and the battery pack to calculate the insulating resistance value of the cathode of the battery pack over the ground；And institute
It states the insulating resistance value of cathode of the control module based on the battery pack over the ground and judges that the battery pack is in less than predetermined threshold value
Cathode leakage condition.
Further, the control module controls the alarm module to send out the first warning in response to leakage condition in parallel
Signal；Or the alarm module is controlled to send out the second caution signal in response to anode leakage condition；Or in response to cathode electric leakage shape
State controls the alarm module to send out third caution signal.
Further, the first alarm announcement number, the sound that the second caution signal, third caution signal are different frequency
The light signal of signal and/or different colours.
Further, the control module is coupled with entire car controller, and is sent information to based on leakage condition in parallel
The entire car controller；The entire car controller sends reminder message to remind use in response to leakage condition in parallel by display screen
Family battery pack is in leakage condition and will be again started up after next parking maintenance, and generates control after pure electric automobile stopping
Signal-inhibiting vehicle launch processed.
Further, the control module is coupled, and sent information to based on anode leakage condition with entire car controller
The entire car controller；The entire car controller sends reminder message to remind use in response to anode leakage condition by display screen
Family battery pack is in anode leakage condition No starting, and generates control signal-inhibiting vehicle launch.
Further, the control module is coupled, and sent information to based on cathode leakage condition with entire car controller
The entire car controller；The entire car controller sends reminder message to remind use in response to cathode leakage condition by display screen
Family battery pack is in cathode leakage condition No starting, and generates control signal-inhibiting vehicle launch.
Further, the Insulation monitoring warning device further includes stand-by power supply, is in and stops in the pure electric automobile
During vehicle power blackout situation, to other module for power supply with the Insulation monitoring of property performance period.
Further, the Insulation monitoring warning device further includes fuse, which is series at the selection
For protection circuit between the anode of module and the battery pack.
Further, the voltage of the AC signal is 3-48V, frequency 0.1-10Hz.
Further, the selecting module is selecting switch.
According to an aspect of the present invention, a kind of Insulation monitoring alarm side suitable for the Insulation monitoring warning device
Method generates AC signal including control AC power；The selecting module is controlled selectively to be connected serially to the definite value capacitance
The positive or negative pole of the battery pack；Detect the electricity of the voltage acquisition point between the fixed value resistance and the definite value capacitance
It presses and the voltage value based on the voltage acquisition point calculates the insulating resistance value of access to judge battery pack whether in electric leakage shape
State；It sends warning signal in response to leakage condition control alarm module.
Further, in response to the battery pack it is in running order when the selecting module is controlled to connect the definite value
The anode of capacitance and the battery pack or the one of which of cathode are to calculate the insulation resistance of the anode of the battery pack over the ground
With the parallel value of the insulation resistance of the cathode of the battery pack over the ground；And the insulated electro of the anode based on the battery pack over the ground
The parallel value of the insulation resistance of the cathode of resistance and the battery pack over the ground judges that the battery pack is in parallel connection less than predetermined threshold value
Leakage condition.
Further, it is in off working state in response to the battery pack and controls the selecting module by definite value electricity
Appearance is connected serially to the anode of the battery pack to calculate the insulating resistance value of the anode of the battery pack over the ground；And based on the electricity
The insulating resistance value of the anode of Chi Bao over the ground judges that the battery pack is in anode leakage condition less than predetermined threshold value.
Further, it is in off working state in response to the battery pack and controls the selecting module by definite value electricity
Appearance is connected serially to the cathode of the battery pack to calculate the insulating resistance value of the cathode of the battery pack over the ground；And based on the electricity
The insulating resistance value of the cathode of Chi Bao over the ground judges that the battery pack is in cathode leakage condition less than predetermined threshold value.
Further, the alarm module is controlled to send out the first caution signal in response to leakage condition in parallel；Or response
The alarm module is controlled to send out the second caution signal in anode leakage condition；Or control the report in response to cathode leakage condition
Alert module sends out third caution signal.
Further, the first alarm announcement number, the sound that the second caution signal, third caution signal are different frequency
The light signal of signal and/or different colours.
Further, reminder message is sent by display screen to remind battery described in user in response to leakage condition in parallel
Packet will be again started up in leakage condition after next parking maintenance, and control signal is generated after pure electric automobile stopping
Forbid vehicle launch.
Further, reminder message is sent by display screen to remind at user's battery pack in response to anode leakage condition
In anode leakage condition No starting, and generate control signal-inhibiting vehicle launch.
Further, reminder message is sent by display screen to remind at user's battery pack in response to cathode leakage condition
In cathode leakage condition No starting, and generate control signal-inhibiting vehicle launch.
Further, parking power blackout situation is in response to the pure electric automobile, using stand-by power supply to other moulds
Block is powered with the Insulation monitoring of execution cycle property.
Further, the voltage of the AC signal as described in the Insulation monitoring alarm method is 3-48V, and frequency is
0.1-10Hz。
Description of the drawings
After the detailed description of embodiment of the disclosure is read in conjunction with the following drawings, the present invention more better understood when
Features described above and advantage.
Fig. 1 is the schematic diagram of the Insulation monitoring warning device of an embodiment；
Fig. 2 is the Insulation monitoring equivalent circuit diagram of an embodiment；
Fig. 3 is the Insulation monitoring alarm method flow chart of an embodiment.
For clarity, the brief description of reference numeral is given below：
10 battery packs
100 insulation detection devices
110 AC powers
120 control modules
130 fixed value resistances
140 definite value capacitances
150 selecting modules
160 alarm modules
170 voltage acquisition points
180 fuses
RPThe insulation resistance of battery pack anode over the ground
RNThe insulation resistance of battery pack cathode over the ground
RPNThe parallel resistance of the insulation resistance of battery pack anode over the ground and the insulation resistance of battery pack cathode over the ground
R0The resistance value of fixed value resistance
The capacitance of C definite value capacitances
S310-S3532 steps
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.It is note that below in conjunction with attached drawing and specifically real
The aspects for applying example description is only exemplary, and is understood not to carry out any restrictions to protection scope of the present invention.
To solve to be only capable of the insulation resistance of detection single electrode and the insulated electro of parallel connection existing for existing low frequency injection method
The defects of resistance, this case using add a selecting module, a bypass reaches the insulation of detection anode and cathode two electrodes over the ground
The purpose of resistance.
In one embodiment of this invention, as shown in Figure 1, a pure electric automobile (not shown) includes battery pack 10 as dynamic
Force system, the insulation resistance of battery pack anode over the ground are RP, the insulation resistance of cathode over the ground is RN.Insulation detection device 100 wraps
Include AC power 110, control module 120, detection resistance 130, definite value capacitance 140, selecting module 150, alarm module 160.Institute
110 one end of AC power ground connection is stated, the other end and one end of detection resistance 130 couple；The other end of the detection resistance 130 is with being somebody's turn to do
One end coupling of definite value capacitance 140, the other end of the definite value capacitance 140 are connected with 1 end of selecting module 150；The selection module
150 2 ends and the anode of battery pack couple, and 3 ends of the selection module 150 and the cathode of battery pack couple；The control module 120
It is coupled with the AC power 110, the control terminal of selecting module 150.
When the insulation detection device 100 starts, the control module 120 controls AC power 110 to generate exchange letter
Number；The definite value capacitance is selectively connected serially to the anode of the battery pack by the 120 control selections module 150 of control module
Or cathode；The voltage of voltage acquisition point of the detection of control module 120 between the fixed value resistance 130, definite value capacitance 140
For the insulating resistance value for calculating access and judge the battery pack whether in leakage condition based on the insulating resistance value；Institute
State control module controls the alarm module 160 to send warning signal in response to leakage condition.
In Insulation monitoring circuit, AC power 110, fixed value resistance 130, definite value capacitance 140, selecting module 150 and
Insulation resistance R1 and/or R2 form a loop.
Further, when it is that the battery pack is in charge or discharge state that battery pack 10 is in running order, exhausted
In edge detection circuit, due to using AC power 110, the battery pack 10 is equivalent to conducting wire, no matter the selection mould
1 end and 2 ends or 1 end and 3 ends are connected in the selection of block 150, and the Insulation monitoring line equivalent is in equivalent circuit shown in Fig. 2.
As shown in Fig. 2, AC power input voltage signal USWhen, the voltage value of voltage acquisition point 170 is Um, postpone one section
After time (within general 1s), due to the presence of definite value capacitance 140, the voltage value of voltage acquisition point 170 can be gradually restored to US,
Then according to the voltage value U of the voltage acquisition pointmAnd the output voltage values U of AC powerSR can be calculatedPN, calculation formula is such as
Under：
RPN=R0*Um/(Us-Um) (1)
Wherein, R0For the resistance value of fixed value resistance, UmFor the voltage value of voltage acquisition point 170, USFor the defeated of AC power 120
Go out voltage value.
Further, the control module will be by parallel resistance value R that formula (1) calculatesPNCompared with predetermined threshold value R, when
The parallel resistance value R calculated by formula (1)PNDuring less than predetermined threshold value R, then it is judged as leakage condition in parallel, the control module
120 control the alarm module 160 to send out the first caution signal based on the parallel connection leakage condition.
Predetermined threshold value R meets：R∈min(RP,RN), wherein, RP、RNThere is no electric leakage feelings for respectively described battery pack 10
Anode insulation against ground resistance value, cathode insulation against ground resistance value under condition.
Further, when battery pack 10 is in off working state, i.e., when the pure electric automobile is in parked state, the control
Module 120 controls the selecting module 150 to carry out route choosing, i.e., by connecting 1 end of the selection module 150 and 2 ends or 1 end
The positive or negative pole of battery pack 10 is selected to access the detection circuit to detect anode insulation resistance R with 3 endsPOr negative insulation electricity
Hinder RN.Anode insulation resistance RPOr negative insulation resistance RNCalculation formula and formula (1) there is no substantive difference, only by RPN
Replace with RPOr RN, repeat no more.The control module 120 is based on the anode insulation resistance R calculatedPOr negative insulation resistance RN
Judge the battery pack whether in anode or cathode leakage condition with the relationship of predetermined threshold value R.
When the battery pack is in anode leakage condition, the control module 120 controls the alarm module 160 to send out
Second caution signal.
When the battery pack is in cathode leakage condition, the control module 120 controls the alarm module 160 to send out
Third caution signal.
Preferably, first caution signal, the second caution signal, the voice signal that third caution signal is different frequency
And/or the optical signal of different colours.
In one embodiment, the detection required time for completing the insulation resistance of an anode and cathode over the ground is one
Detection cycle.Then in single detection cycle, as the anode insulation resistance R only calculatedPIt is described during less than predetermined threshold value R
Control module 120 judges that battery pack 10 is in anode leakage condition, and the alarm module 160 is controlled to send out the second caution signal；
As the negative insulation resistance R only calculatedNDuring less than predetermined threshold value R, the control module 120 is judged in cathode electric leakage shape
State, and the alarm module 160 is controlled to send out third caution signal；As the anode insulation resistance R calculatedPAnd negative insulation electricity
Hinder RNDuring respectively less than predetermined threshold value R, which judges in anode and the equal leakage condition of cathode, and controls the alarm
Module 160 sends out the 4th caution signal.
In one embodiment, the control module 120 communicates with entire car controller, as the parallel resistance value R calculatedPNIt is small
When predetermined threshold value R, then it is judged as leakage condition in parallel, the control module 120 is based on the parallel connection leakage condition to the vehicle
Controller send information, the vehicle control unit controls in display alarm message on display screen with remind user's automobile batteries packet exist
Electric leakage, No starting after stopping next time, needs to overhaul as early as possible, and control signal-inhibiting vehicle is sent after stopping next time and is opened
It is dynamic.
It is appreciated that when the working condition of the battery pack 10 is charged state, vehicle is obviously in illegal state, then
The entire car controller can be transmitted control signal-inhibiting vehicle launch and stop next time without waiting for.
When battery pack 10 is in anode leakage condition, the control module 120 sends information to entire car controller, the vehicle
Controller is forbidden showing that prompting message user battery pack is in anode leakage condition in vehicle launch and control display screen, needs to examine
It repaiies, No starting；When battery pack 10 is in cathode leakage condition, the control module 120 sends information to entire car controller, should
Entire car controller is forbidden showing that prompting message user battery pack is in cathode leakage condition in vehicle launch and control display screen, needs
It overhauls, No starting；When battery pack 10 is in anode and the equal leakage condition of cathode, the control module 120 is sent information to
Entire car controller, the entire car controller are forbidden showing that prompting message user battery pack is in just in vehicle launch and control display screen
Pole, the equal leakage condition of cathode, need to overhaul, No starting.
It is appreciated that described forbid vehicle launch to include forbidding battery pack cut-in operation circuit, disconnect connection inside battery pack
Or forbid gas pedal braking etc. it may occur to persons skilled in the art that auto Not Permitted operation mode.
Further, since the supply voltage for commonly using electronic equipment is 3-48V, the voltage one of the AC power
As be 3-48V.
Further, the frequency for the AC signal that the AC power generates is generally set to 0.1-10Hz, for the ease of meter
It calculates, such as every 1s or 2s detection primary voltage values, is more preferably set as 0.5Hz or 1Hz.
In one embodiment, the selecting module 150 is selecting switch.
In one embodiment, it connects a fuse 180, is used between 2 end of the selection module and the anode of battery pack 10
The caused battery pack short circuit of situations such as 2 end of selecting module is with 3 end short circuit is prevented, the electric current for flowing through fuse 180 is more than a certain threshold
During value, fuse 180 disconnects automatically, plays the role of protecting circuit.180 impedance of fuse is very small, can be neglected when calculating
Slightly disregard.
In one embodiment, which includes stand-by power supply (not shown), is in the pure electric automobile
Long-term parked state, that is, vehicle is in when parking state, enable stand-by power supply with realize low frequency (as per hour, daily, per half
A month etc.) periodical Insulation monitoring.When judging that the pure electric automobile battery pack is in anode and/or cathode leakage condition,
It sends warning signal, such as whistle, flashing light.
According to an aspect of the present invention, a kind of Insulation monitoring alarm side suitable for pure electric automobile battery pack is provided
Method.In one embodiment, as shown in figure 3, this method includes：
S310：Device initialization, to Insulation monitoring circuit input exchange signal；
S320：Definite value capacitance is selectively connected serially to the positive or negative pole of battery pack.
S330：It detects the voltage of the voltage acquisition point between fixed value resistance and definite value capacitance and is adopted based on the voltage
Set point voltage value calculates the insulating resistance value of the detection circuit of access.
S340：Judge battery pack whether in leakage condition based on the insulating resistance value calculated；
S350：Alarm module is controlled to send warning signal if battery pack is in leakage condition.
In one embodiment, which can be refined as：
321：When battery pack is in running order, the positive or negative pole that definite value capacitance is connected serially to battery pack is wherein appointed
Meaning one；
322：When battery pack is in off working state, definite value capacitance is connected serially to the anode of battery pack；
323：When battery pack is in off working state, definite value capacitance is connected serially to the cathode of battery pack；
Further, the formula that insulating resistance value is calculated in step S330 is RPN=R0*Um/(Us-Um)。
In one embodiment, step S340 can be refined as：
S341：Corresponding to step 321, the insulation resistance of detection circuit for access for the insulation resistance of battery pack anode over the ground with
The parallel value of the insulation resistance of the cathode of battery pack over the ground, based on battery pack anode insulation resistance over the ground and battery pack
The parallel value of the insulation resistance of cathode over the ground judges that battery pack is in leakage condition in parallel less than predetermined threshold value R；
S342：Corresponding to step 322, the insulation resistance of detection circuit for access is the insulation resistance of battery pack anode over the ground,
Insulation resistance based on battery pack anode over the ground judges that battery pack is in anode leakage condition less than predetermined threshold value R；
S343：Corresponding to step 323, the insulation resistance of detection circuit for access is the insulation resistance of battery pack cathode over the ground,
Insulation resistance based on battery pack cathode over the ground judges that battery pack is in cathode leakage condition less than predetermined threshold value R.
In one embodiment, step S350 can be refined as：
S3511：Corresponding to step 321, in response to leakage condition in parallel, the first caution signal is sent out；
S3521：Corresponding to step 322, in response to anode leakage condition, the second caution signal is sent out；
S3531：Corresponding to step 323, in response to cathode leakage condition, third caution signal is sent out；
In one embodiment, step S350 is further included：
S3512：Send information to entire car controller, the entire car controller is in display alarm information on display screen to remind
User's battery pack is in leakage condition in parallel, needs to overhaul, will after parking No starting, and control is sent after stop next time
Signal-inhibiting vehicle launch processed；
S3522：Send information to entire car controller, the entire car controller is in display alarm information on display screen to remind
User's battery pack is in anode leakage condition, needs to overhaul, No starting, and sends control signal-inhibiting vehicle launch；
S3532：Send information to entire car controller, the entire car controller is in display alarm information on display screen to remind
User's battery pack is in cathode leakage condition, needs to overhaul, No starting, and sends control signal-inhibiting vehicle launch.
It will be understood by those skilled in the art that appointing in various different technologies and skill can be used in information, signal and data
What technology and skill represent.For example, above description quote from the whole text data, instruction, order, information, signal, position (bit),
Symbol and chip can by voltage, electric current, electromagnetic wave, magnetic field or magnetic particle, light field or optical particle, or any combination thereof come table
Show.
Those skilled in the art will further appreciate that, the various illustratives described with reference to the embodiments described herein
Logic plate, module, circuit and algorithm steps can be realized as electronic hardware, computer software or combination of the two.It is clear
Explain to Chu this interchangeability of hardware and software, various illustrative components, frame, module, circuit and step be above with
Its functional form makees generalization description.Such functionality be implemented as hardware or software depend on concrete application and
It is applied to the design constraint of total system.Technical staff can realize each specific application described with different modes
Functionality, but such realization decision should not be interpreted to cause departing from the scope of the present invention.
With reference to presently disclosed embodiment describe various illustrative logic modules and circuit can use general processor,
Digital signal processor (DSP), application-specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic
Device, discrete door or transistor logic, discrete hardware component or its be designed to carry out any group of function described herein
It closes to realize or perform.General processor can be microprocessor, but in alternative, which can be any routine
Processor, controller, microcontroller or state machine.Processor is also implemented as the combination of computing device, such as DSP
Combination, multi-microprocessor with microprocessor, one or more microprocessors to cooperate with DSP core or any other this
Class is configured.
It can be embodied directly in hardware, in by processor with reference to the step of method or algorithm that embodiment disclosed herein describes
It is embodied in the software module of execution or in combination of the two.Software module can reside in RAM memory, flash memory, ROM and deposit
Reservoir, eprom memory, eeprom memory, register, hard disk, removable disk, CD-ROM or known in the art appoint
In the storage medium of what other forms.Exemplary storage medium is coupled to processor so that the processor can be from/to the storage
Medium is read and write-in information.In alternative, storage medium can be integrated into processor.Pocessor and storage media can
It resides in ASIC.ASIC can reside in user terminal.In alternative, pocessor and storage media can be used as discrete sets
Part is resident in the user terminal.
In one or more exemplary embodiments, described function can be in hardware, software, firmware, or any combination thereof
Middle realization.If being embodied as computer program product in software, each function can be used as the instruction of one or more items or generation
Code may be stored on the computer-readable medium or is transmitted by it.Computer-readable medium includes computer storage media and communication
Both media, including any medium that computer program is facilitated to shift from one place to another.Storage medium can be can quilt
Any usable medium that computer accesses.It is non-limiting as example, such computer-readable medium may include RAM, ROM,
EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage apparatus can be used to carrying or store instruction
Or data structure form desirable program code and any other medium that can be accessed by a computer.Any connection is also by by rights
Referred to as computer-readable medium.For example, if software is using coaxial cable, fiber optic cables, twisted-pair feeder, digital subscriber line
(DSL) or the wireless technology of such as infrared, radio and microwave etc is passed from web site, server or other remote sources
It send, then the coaxial cable, fiber optic cables, twisted-pair feeder, DSL or such as infrared, radio and microwave etc is wireless
Technology is just included among the definition of medium.Disk (disk) and dish (disc) as used herein are including compressing dish
(CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and blu-ray disc, which disk (disk) are often reproduced in a manner of magnetic
Data, and dish (disc) with laser reproduce data optically.Combinations of the above should also be included in computer-readable medium
In the range of.
Description before offer is described herein in order to make any technical staff in this field that can put into practice
Various aspects.However, it should be understood that protection scope of the present invention should be subject to the appended claims, and should not be limited to
More than explain the concrete structure and component of embodiment.Those skilled in the art within the spirit and scope of the present invention, can be right
Each embodiment carries out various changes and modifications, these are changed and modification is also fallen within the scope and spirit of the invention.
Claims (24)
1. a kind of Insulation monitoring warning device of battery pack suitable for pure electric automobile, including：
AC power, for generating AC signal, one end ground connection of the AC power；
Fixed value resistance, one end of the fixed value resistance are connected with the other end of the AC power；
Definite value capacitance for completely cutting off the DC voltage of battery pack, is connected with the other end of the fixed value resistance；
The definite value capacitance is selectively connected serially to the positive or negative pole of the battery pack by selecting module；
Control module, the control module and the AC power source, control the AC power to generate AC signal；It is described
Control module is coupled with the selecting module, and it is described that the selecting module is controlled selectively to be connected serially to the definite value capacitance
The positive or negative pole of battery pack；Voltage of the control module detection between the fixed value resistance and the definite value capacitance is adopted
Collect the voltage of point and the voltage value based on the voltage acquisition point calculates the insulating resistance value of access to judge whether battery pack is located
In leakage condition；And
Alarm module, the control module couple with the alarm module and the alarm module are controlled to send out in response to leakage condition
Go out caution signal.
2. Insulation monitoring warning device as described in claim 1, which is characterized in that the control module is at the battery pack
Control the selecting module that the definite value capacitance is connected serially in the anode or cathode of the battery pack when working condition
Any one is to calculate the insulation resistance of the cathode of the anode of battery pack insulation resistance over the ground and the battery pack over the ground
Parallel value；And
Anode of the control module based on battery pack insulation resistance over the ground and the cathode of the battery pack over the ground exhausted
The parallel value of edge resistance judges that the battery pack is in leakage condition in parallel less than predetermined threshold value.
3. Insulation monitoring warning device as described in claim 1, which is characterized in that the control module is at the battery pack
The selecting module series connection definite value capacitance and the anode of the battery pack is controlled to calculate the electricity when off working state
The insulating resistance value of the anode of Chi Bao over the ground；And
The insulating resistance value of anode of the control module based on the battery pack over the ground judges the battery less than predetermined threshold value
Packet is in anode leakage condition.
4. Insulation monitoring warning device as described in claim 1, which is characterized in that the control module is at the battery pack
The selecting module series connection definite value capacitance and the cathode of the battery pack is controlled to calculate the electricity when off working state
The insulating resistance value of the cathode of Chi Bao over the ground；And
The insulating resistance value of cathode of the control module based on the battery pack over the ground judges the battery less than predetermined threshold value
Packet is in cathode leakage condition.
5. the Insulation monitoring warning device as described in claim 2,3 or 4, which is characterized in that the control module is in response to simultaneously
Connection leakage condition controls the alarm module to send out the first caution signal；Or
The alarm module is controlled to send out the second caution signal in response to anode leakage condition；Or
The alarm module is controlled to send out third caution signal in response to cathode leakage condition.
6. Insulation monitoring warning device as claimed in claim 5, which is characterized in that the first alarm announcement number, the second warning
Signal, third caution signal are the voice signal of different frequency and/or the light signal of different colours.
7. Insulation monitoring warning device as claimed in claim 2, which is characterized in that the control module and entire car controller coupling
It connects, and the entire car controller is sent information to based on leakage condition in parallel；
The entire car controller sends reminder message to remind at user's battery pack in response to leakage condition in parallel by display screen
It will be again started up after next parking maintenance in leakage condition, and control signal-inhibiting generated after pure electric automobile stopping
Vehicle launch.
8. Insulation monitoring warning device as claimed in claim 3, which is characterized in that the control module and entire car controller coupling
It connects, and the entire car controller is sent information to based on anode leakage condition；
The entire car controller sends reminder message to remind at user's battery pack in response to anode leakage condition by display screen
In anode leakage condition No starting, and generate control signal-inhibiting vehicle launch.
9. Insulation monitoring warning device as claimed in claim 4, which is characterized in that the control module and entire car controller coupling
It connects, and the entire car controller is sent information to based on cathode leakage condition；
The entire car controller sends reminder message to remind at user's battery pack in response to cathode leakage condition by display screen
In cathode leakage condition No starting, and generate control signal-inhibiting vehicle launch.
10. Insulation monitoring warning device as described in claim 1, which is characterized in that further include：
Stand-by power supply, for the pure electric automobile be in park state when, to other module for power supply with execution cycle property
Insulation monitoring.
11. Insulation monitoring warning device as described in claim 1, which is characterized in that further include
Fuse is series between the anode of the selecting module and the battery pack to protect circuit.
12. Insulation monitoring warning device as described in claim 1, which is characterized in that the voltage of the AC signal is 3-
48V, frequency 0.1-10Hz.
13. Insulation monitoring warning device as described in claim 1, which is characterized in that the selecting module is selecting switch.
14. a kind of Insulation monitoring alarm method suitable for Insulation monitoring warning device described in claim 1, including
AC power is controlled to generate AC signal；The selecting module is controlled selectively to be connected serially to the definite value capacitance described
The positive or negative pole of battery pack；Detect the voltage of the voltage acquisition point between the fixed value resistance and the definite value capacitance simultaneously
Voltage value based on the voltage acquisition point calculates the insulating resistance value of access to judge battery pack whether in leakage condition；It rings
Alarm module should be controlled to send warning signal in leakage condition.
15. Insulation monitoring alarm method as claimed in claim 14, which is characterized in that be in work in response to the battery pack
Controlled during state the selecting module connect the definite value capacitance and the anode of the battery pack or the one of which of cathode with
Calculate the parallel value of the insulation resistance of the cathode of the anode of battery pack insulation resistance over the ground and the battery pack over the ground；With
And
The parallel connection of the insulation resistance of anode based on battery pack insulation resistance over the ground and the cathode of the battery pack over the ground
Value judges that the battery pack is in leakage condition in parallel less than predetermined threshold value.
16. Insulation monitoring alarm method as claimed in claim 14, which is characterized in that be in non-work in response to the battery pack
Making state controls the selecting module that the definite value capacitance is connected serially to the anode of the battery pack to calculate the battery pack
The insulating resistance value of anode over the ground；And
The insulating resistance value of anode based on the battery pack over the ground judges that the battery pack is in anode leakage less than predetermined threshold value
Electricity condition.
17. Insulation monitoring alarm method as claimed in claim 14, which is characterized in that be in non-work in response to the battery pack
Making state controls the selecting module that the definite value capacitance is connected serially to the cathode of the battery pack to calculate the battery pack
The insulating resistance value of cathode over the ground；And
The insulating resistance value of cathode based on the battery pack over the ground judges that the battery pack is in cathode leakage less than predetermined threshold value
Electricity condition.
18. the Insulation monitoring alarm method as described in claim 15,16 or 17, which is characterized in that in response to parallel connection electric leakage shape
State controls the alarm module to send out the first caution signal；Or
The alarm module is controlled to send out the second caution signal in response to anode leakage condition；Or
The alarm module is controlled to send out third caution signal in response to cathode leakage condition.
19. Insulation monitoring alarm method as claimed in claim 18, which is characterized in that the first alarm announcement number, the second police
Accuse signal, third caution signal is the voice signal of different frequency and/or the light signal of different colours.
20. Insulation monitoring warning device as claimed in claim 15, which is characterized in that pass through in response to leakage condition in parallel aobvious
Display screen sends reminder message and will be again started up after next parking maintenance so that battery pack described in user is reminded to be in leakage condition, and
Control signal-inhibiting vehicle launch is generated after pure electric automobile stopping.
21. Insulation monitoring warning device as claimed in claim 16, which is characterized in that pass through in response to anode leakage condition aobvious
Display screen sends reminder message so that user's battery pack to be reminded to be in anode leakage condition No starting, and generates control signal-inhibiting vehicle
Start.
22. Insulation monitoring warning device as claimed in claim 17, which is characterized in that pass through in response to cathode leakage condition aobvious
Display screen sends reminder message so that user's battery pack to be reminded to be in cathode leakage condition No starting, and generates control signal-inhibiting vehicle
Start.
23. Insulation monitoring alarm method as claimed in claim 14, which is characterized in that be in response to the pure electric automobile
During state of parking, stand-by power supply is used to other module for power supply with execution cycle property Insulation monitoring.
24. Insulation monitoring alarm method as claimed in claim 13, which is characterized in that the voltage of the AC signal is 3-
48V, frequency 0.1-10Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810171015.2A CN108196176B (en) | 2018-03-01 | 2018-03-01 | Insulation detection alarm device and method for battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810171015.2A CN108196176B (en) | 2018-03-01 | 2018-03-01 | Insulation detection alarm device and method for battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108196176A true CN108196176A (en) | 2018-06-22 |
| CN108196176B CN108196176B (en) | 2020-12-15 |
Family
ID=62594312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810171015.2A Active CN108196176B (en) | 2018-03-01 | 2018-03-01 | Insulation detection alarm device and method for battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108196176B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471041A (en) * | 2019-01-08 | 2019-03-15 | 常州索维尔电子科技有限公司 | Power battery insulation impedance on-Line Monitor Device and method |
| CN109917294A (en) * | 2019-03-25 | 2019-06-21 | 深圳艾威仕汽车检测设备有限公司 | Vehicle battery electric leakage monitoring method based on big data analysis |
| CN110967607A (en) * | 2019-01-15 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Insulation detection circuit, method and battery management system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013024694A (en) * | 2011-07-20 | 2013-02-04 | Toyota Motor Corp | Detection device for electric leakage state and detection method |
| CN104076207A (en) * | 2014-06-26 | 2014-10-01 | 天津市松正电动汽车技术股份有限公司 | Electric vehicle insulation detecting circuit |
| CN104142433A (en) * | 2013-05-09 | 2014-11-12 | 中南大学 | Active type direct-current system insulation resistor detection method |
| JP5926677B2 (en) * | 2012-12-27 | 2016-05-25 | 日立オートモティブシステムズ株式会社 | Ground fault detector |
| CN106053947A (en) * | 2016-07-11 | 2016-10-26 | 北京长城华冠汽车科技股份有限公司 | Insulation resistance detection circuit and method of electric automobile power battery, and electric automobile |
-
2018
- 2018-03-01 CN CN201810171015.2A patent/CN108196176B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013024694A (en) * | 2011-07-20 | 2013-02-04 | Toyota Motor Corp | Detection device for electric leakage state and detection method |
| JP5926677B2 (en) * | 2012-12-27 | 2016-05-25 | 日立オートモティブシステムズ株式会社 | Ground fault detector |
| CN104142433A (en) * | 2013-05-09 | 2014-11-12 | 中南大学 | Active type direct-current system insulation resistor detection method |
| CN104076207A (en) * | 2014-06-26 | 2014-10-01 | 天津市松正电动汽车技术股份有限公司 | Electric vehicle insulation detecting circuit |
| CN106053947A (en) * | 2016-07-11 | 2016-10-26 | 北京长城华冠汽车科技股份有限公司 | Insulation resistance detection circuit and method of electric automobile power battery, and electric automobile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471041A (en) * | 2019-01-08 | 2019-03-15 | 常州索维尔电子科技有限公司 | Power battery insulation impedance on-Line Monitor Device and method |
| CN110967607A (en) * | 2019-01-15 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Insulation detection circuit, method and battery management system |
| US11262413B2 (en) | 2019-01-15 | 2022-03-01 | Contemporary Amperex Technology Co., Limited | Insulation detection circuit, detection method and battery management system |
| CN109917294A (en) * | 2019-03-25 | 2019-06-21 | 深圳艾威仕汽车检测设备有限公司 | Vehicle battery electric leakage monitoring method based on big data analysis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108196176B (en) | 2020-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103847531B (en) | A kind of electric automobile high-voltage electrical system and control method | |
| CN108196176A (en) | The Insulation monitoring warning device and its method of a kind of battery pack | |
| CN109212385A (en) | The vehicle circuitry insulation detecting method and device of electric car | |
| CN102680909B (en) | External power supply in-place monitoring system for lithium ion battery direct-current reserve power supply | |
| CN101470174B (en) | Accumulator monitoring equipment and method thereof | |
| CN104143845A (en) | Wireless charging detecting system for electromobile | |
| CN106965701A (en) | Emergency starting system and electric automobile emergency starting device | |
| CN106920343A (en) | The peripheral controller and system of a kind of finance device | |
| CN103311984A (en) | Alternating current charging post for electric automobile | |
| CN105322242B (en) | Standby battery | |
| CN207481815U (en) | Electric system above and below electric automobile high-voltage | |
| CN110112826A (en) | The monitoring system of generator car access device and distribution of meeting an urgent need | |
| CN206557352U (en) | A kind of electric quantity of lead-acid storage battery supervising device and vehicle | |
| CN203345880U (en) | Intelligent emergency power supply rescue device for elevator detection | |
| CN104377808A (en) | General multi-channel power supply device | |
| CN203377625U (en) | Communication lithium iron phosphate battery intelligent management device | |
| CN105527574A (en) | Novel battery patrol instrument suitable for UPS | |
| CN102255373A (en) | Equipment capable of realizing composite power supply of outdoor optical fiber access nodes, switching method and switching system | |
| CN103407851A (en) | Intelligent elevator detection emergency power supply rescue device | |
| CN207318679U (en) | Comprehensive safety detection device | |
| CN207199787U (en) | A kind of automobile high in the clouds battery management system based on wireless telecommunications battery core | |
| CN206797152U (en) | emergency starting system and electric automobile emergency starting device | |
| CN206711274U (en) | The peripheral controller and system of a kind of finance device | |
| CN115616289A (en) | Insulation resistance value detection circuit and method, battery management controller and vehicle | |
| CN205853989U (en) | A kind of New Type of Reversing Lamp system failure alarm 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |