CN106501725A - A kind of battery pack open circuit detection method and device - Google Patents
A kind of battery pack open circuit detection method and device Download PDFInfo
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- CN106501725A CN106501725A CN201610965081.8A CN201610965081A CN106501725A CN 106501725 A CN106501725 A CN 106501725A CN 201610965081 A CN201610965081 A CN 201610965081A CN 106501725 A CN106501725 A CN 106501725A
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- 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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
Abstract
The present invention relates to a kind of battery pack open circuit detection method and device, belong to battery technology field.The method includes：Determine the first average voltage of the first battery subgroup, and determine the second average voltage of the second battery subgroup；The first average voltage is determined less than default monomer open-circuit voltage, or, the second average voltage is determined less than after monomer open-circuit voltage, according to the relation detection batteries between the first average voltage, the second average voltage and monomer open-circuit voltage with the presence or absence of open circuit.This method determines the second average voltage of the first average voltage of the first battery subgroup and the second battery subgroup；According to the relation detection batteries between the first average voltage, the second average voltage and monomer open-circuit voltage with the presence or absence of open circuit, it is achieved that the automatic measurement of battery pack open circuit.
Description
Technical field
The present invention relates to battery technology field, more particularly to a kind of battery pack open circuit detection method and device.
Background technology
For whole straight-flow system, battery is its second lifeblood, once ac power supply system power-off, direct current system
System just can only keep normal operation by battery, so, battery be very important, therefore, electric power storage at home at present
The testing equipment in pond is very more, and the precision of their indices detections to battery is also very high.
In battery practical work process, when battery and battery junction or internal storage battery reason make
Disconnecting into battery more than the time that adjusts is, it is believed which has open circuit（Referring to Fig. 1）.
The reason for causing battery pack open circuit have multiple, for example：1）Contact problems：Because not tightening connection when installation
The screw of line so that connection strap resistance increases, battery of long duration will burn out connection strap, cause to open a way.2）Environmental problem：
Environment residing for battery causes battery connection strap to be corroded, and one length of time will cause to open a way.3）Problem of aging：For a long time not
Battery wiring is checked, the aging disconnection of connecting line.4）Battery damage：Because battery damage causes whole battery
Group cannot be gone here and there together, cause the open circuit of battery to exist.
Once battery exist open circuit, by multiple batteries into batteries will be unable to realize charging and discharging mistake
Journey.Especially when the Alternating Current Power Supply of protection system disconnects, the battery as the second source of protection system is will be unable to protection
System provides its energy needed for running, and causes protection system to paralyse.
And battery pack open circuit monitoring method can timely detect the open circuit situation of battery, related personnel is most for auxiliary
Open circuit is solved the problems, such as in the short time, it is ensured that straight-flow system normally can be run in the situation that exchange has a power failure, also ensure to charge
Machine can carry out energy recharge to battery, and the status safety for allowing battery to keep fit reliably runs.
Content of the invention
（One）Technical problem to be solved
In order to detect that battery pack open circuit, the present invention provide a kind of battery pack open circuit detection method and device, which can determine first
After second average voltage of the first average voltage of battery subgroup and the second battery subgroup, according to the first average voltage,
Relation detection batteries between second average voltage and monomer open-circuit voltage are with the presence or absence of open circuit, it is achieved that battery is opened
The automatic measurement on road.
（Two）Technical scheme
In order to achieve the above object, the main technical schemes that the present invention is adopted include：
A kind of battery pack open circuit detection method, the battery are located in batteries, methods described, including：
Step 201, determines the first current voltage of the first battery subgroup in the batteries, and determines the batteries
In the second battery subgroup the second current voltage, the first battery subgroup by be located at pre-terminated tap leading portion batteries
Into, the second battery subgroup by be located at the batteries of the tap back segment into, or, the first battery subgroup by
The batteries of the tap back segment are located at into the second battery subgroup is by the batteries for being located at the tap leading portion
Into；
Step 202, according to the first average voltage that first current voltage determines the first battery subgroup, and according to institute
State the second average voltage that the second current voltage determines the second battery subgroup；
Step 203, determines first average voltage less than default monomer open-circuit voltage, or, determine that described second is average
After voltage is less than the monomer open-circuit voltage, according to first average voltage, second average voltage and the monomer
Relation between open-circuit voltage detects the batteries with the presence or absence of open circuit.
Alternatively, being opened according to first average voltage, second average voltage and the monomer in step 203
Relation between the voltage of road detects that the batteries, with the presence or absence of open circuit, are specifically included：
If first average voltage, second average voltage are respectively less than the monomer open-circuit voltage, and described first average
Voltage, second average voltage are respectively less than 1.2 volts, it is determined that battery and described second in the first battery subgroup
In battery subgroup there is open circuit in battery；
If first average voltage, second average voltage are respectively less than the monomer open-circuit voltage, but described first average
Voltage, second average voltage are non-to be respectively less than 1.2 volts, it is determined that the two ends of the batteries have open circuit；
If first average voltage is less than the monomer open-circuit voltage, but second average voltage is opened not less than the monomer
Road voltage, it is determined that the battery in the second battery subgroup has open circuit；
If first average voltage is not less than the monomer open-circuit voltage, but second average voltage is opened less than the monomer
Road voltage, it is determined that the battery in the first battery subgroup has open circuit.
Alternatively, in execution, step 203 determines that first average voltage is less than default monomer open-circuit voltage, or,
Determine second average voltage less than after the monomer open-circuit voltage, execute according to first average voltage, described the
Before relation between two average voltages and the monomer open-circuit voltage detects the batteries with the presence or absence of open circuit, also wrap
Include：
After time delay Preset Time, step 201 and step 202 is re-executed；
The first average voltage after re-executing is determined less than the monomer open-circuit voltage, or, second after re-executing is flat
Voltage is less than the monomer open-circuit voltage.
Alternatively, before execution step 201, also include：
In the batteries, the either end of arbitrary battery picks out a tap；
The step 201, specifically includes：
First current voltage and the second current voltage are determined according to the voltage at the batteries two ends and the tap voltage；
The step 202, specifically includes：
Will（The battery quantity of the first current voltage/the first battery subgroup）-（The voltage * at the batteries two ends
The battery total quantity of the 4.39%/batteries）It is defined as the first average voltage, will（Second current voltage/the second electric power storage
The battery quantity of pond group）-（The battery total quantity of the 4.39%/batteries of voltage * at the batteries two ends）
It is defined as the second average voltage.
Alternatively, before execution step 201, also include：
Determine the floating current of the batteries less than 0.3 peace.
In order to detect that battery pack open circuit, the present invention also provide following technical scheme：
A kind of battery pack open circuit detection means, the battery are located in batteries, described device, including：
First determining module, for determining the first current voltage of the first battery subgroup in the batteries, and determines institute
The second current voltage of the second battery subgroup in batteries is stated, the first battery subgroup is by positioned at pre-terminated tap leading portion
Batteries into, the second battery subgroup by be located at the batteries of the tap back segment into, or, described first stores
Battery subgroup is by the batteries positioned at the tap back segment into the second battery subgroup is by positioned at the tap leading portion
Batteries into；
Second determining module, the first current voltage for being determined according to first determining module determine first battery
First average voltage of subgroup, and the second current voltage determined according to first determining module determines second battery
Second average voltage of subgroup；
Detection module, for determining first average voltage less than default monomer open-circuit voltage, or, determine described second
Average voltage less than after the monomer open-circuit voltage, according to first average voltage, second average voltage and described
Relation between monomer open-circuit voltage detects the batteries with the presence or absence of open circuit.
Alternatively, the detection module, described in being respectively less than when first average voltage, second average voltage
Monomer open-circuit voltage, and first average voltage, second average voltage be respectively less than 1.2 volts when, determine described first store
In battery subgroup, in battery and the second battery subgroup there is open circuit in battery；When first average voltage,
Second average voltage is respectively less than the monomer open-circuit voltage, but first average voltage, second average voltage are non-
When respectively less than 1.2 volts, determine that the two ends of the batteries have open circuit；When first average voltage is opened less than the monomer
Road voltage, but second average voltage be not less than the monomer open-circuit voltage when, determine in the second battery subgroup
There is open circuit in battery；When first average voltage is not less than the monomer open-circuit voltage, but second average voltage is little
When the monomer open-circuit voltage, determine that the battery in the first battery subgroup has open circuit.
Alternatively, the detection module, after being additionally operable to time delay Preset Time, re-executes in the determination batteries the
First current voltage of one battery subgroup, and determine the second current voltage of the second battery subgroup in the batteries,
According to the first average voltage that first current voltage determines the first battery subgroup, and according to the described second current electricity
Pressure determines the second average voltage of the second battery subgroup；Determine that the first average voltage after re-executing is less than the list
Body open-circuit voltage, or, the second average voltage after re-executing is less than the monomer open-circuit voltage.
Alternatively, in the batteries, the either end of arbitrary battery picks out a tap；
According to the voltage at the batteries two ends and the tap voltage, first determining module, for determining that first is current
Voltage and the second current voltage；
Second determining module, for inciting somebody to action（The battery quantity of the first current voltage/the first battery subgroup）-（The storage
The voltage * 4.39% at battery pack two ends）It is defined as the first average voltage, will（The storage of the second current voltage/the second battery subgroup
Number of batteries）-（The voltage * 4.39% at the batteries two ends）It is defined as the second average voltage.
Alternatively, described device, also includes：
3rd determining module, for determining the floating current of the batteries less than 0.3 peace.
（Three）Beneficial effect
The invention has the beneficial effects as follows：Present invention determine that in batteries the first battery subgroup the first current voltage, and really
Determine the second current voltage of the second battery subgroup in batteries；First battery subgroup is determined according to the first current voltage
First average voltage, and the second average voltage of the second battery subgroup is determined according to the second current voltage；Determine that first is average
Voltage is less than default monomer open-circuit voltage, or, the second average voltage is determined less than after monomer open-circuit voltage, flat according to first
Relation detection batteries between voltage, the second average voltage and monomer open-circuit voltage are with the presence or absence of open circuit, it is achieved that
The automatic detection of battery pack open circuit.
Description of the drawings
Fig. 1 is battery pack open circuit principle schematic；
A kind of battery pack open circuit detection method flow chart that Fig. 2 is provided for one embodiment of the invention；
A kind of batteries schematic diagram that Fig. 3 is provided for one embodiment of the invention；
A kind of battery pack open circuit detection schematic diagram of a scenario that Fig. 4 is provided for one embodiment of the invention；
A kind of binding post schematic diagram that Fig. 5 is provided for one embodiment of the invention；
Another kind of battery pack open circuit detection method flow chart that Fig. 6 is provided for one embodiment of the invention；
A kind of man-machine interface schematic diagram that Fig. 7 is provided for one embodiment of the invention；
Another kind of man-machine interface schematic diagram that Fig. 8 is provided for one embodiment of the invention；
Another kind of man-machine interface schematic diagram that Fig. 9 is provided for one embodiment of the invention；
Another kind of man-machine interface schematic diagram that Figure 10 is provided for one embodiment of the invention；
Another kind of man-machine interface schematic diagram that Figure 11 is provided for one embodiment of the invention；
Another kind of man-machine interface schematic diagram that Figure 12 is provided for one embodiment of the invention；
Another kind of man-machine interface schematic diagram that Figure 13 is provided for one embodiment of the invention；
A kind of battery pack open circuit structure of the detecting device schematic diagram that Figure 14 is provided for one embodiment of the invention；
Another kind of battery pack open circuit structure of the detecting device schematic diagram that Figure 15 is provided for one embodiment of the invention.
Specific embodiment
In order to preferably explain the present invention, in order to understand, below in conjunction with the accompanying drawings, by specific embodiment, to this
Bright it is described in detail.
Embodiment one
A kind of battery pack open circuit detection method is present embodiments provided, the battery is located in batteries, and in batteries
In the either end of arbitrary battery picked out a tap in advance.Now, batteries are divided into two sections by the tap, respectively before
Section and back segment.Part of the leading portion for the positive best tap of batteries, back segment is the portion of the negative pole of the tap to batteries
Point, referring to Fig. 3.
If batteries include that X section batteries, leading portion include X1 section batteries altogether, then back segment includes X-X1 section batteries.
Referring to Fig. 2, the method flow that the present embodiment is provided is specific as follows：
Step 201, determines the first current voltage of the first battery subgroup in batteries, and determines the second storage in batteries
Second current voltage of battery subgroup.
Wherein, if the first battery subgroup by be located at pre-terminated tap leading portion batteries into the second battery subgroup
By be located at tap back segment batteries into.If the first battery subgroup is by being located at the batteries of tap back segment into second
Battery subgroup by be located at tap leading portion batteries into.
This step can determine the first current voltage and second current according to the voltage at batteries two ends and tap voltage
Voltage.
Specifically, for the first battery subgroup is by being located at the batteries of pre-terminated tap leading portion into then the second battery
Subgroup by be located at the batteries of tap back segment into situation, step 201 can be realized as follows：Measurement batteries two
End and the voltage of measurement tap, are designated as U respectively+、U-And UIn, by U+-UInIt is defined as the first current voltage, by UIn-U-It is defined as
Two current voltages.
For the first battery subgroup by be located at tap back segment batteries into, then the second battery subgroup by be located at take out
The batteries of head leading portion into situation, step 201 can be realized as follows：Measurement batteries two ends and measurement tap
Voltage, be designated as U respectively+、U-And UIn.By U+-UInIt is defined as the second current voltage, by UIn-U-It is defined as the first current voltage.
Describe for convenience, if the present embodiment and subsequent embodiment are without specified otherwise, with the first battery subgroup by
Be located at pre-terminated tap leading portion batteries into, then the second battery subgroup by be located at tap back segment batteries into situation
As a example by.
In addition, open-circuit condition is there occurs in order to ensure that battery detects battery under floating charge state, in execution step
Before 201, can be in high accuracy CT（Current Transformer, Current Transmit）While monitoring charging current, prison
Survey the floating current of batteries（Referring to Fig. 4）, after the floating current for monitoring batteries is less than predetermined threshold value, execute step
Rapid 201.
Wherein, predetermined threshold value can be 0.3A（Ampere）.
Step 202, according to the first average voltage that the first current voltage determines the first battery subgroup, and works as according to second
Front voltage determines the second average voltage of the second battery subgroup.
The battery quantity of the first current voltage/the first battery subgroup can be defined as the first average electricity by this step
The battery quantity of the second current voltage/the second battery subgroup is defined as the second average voltage by pressure.
For example, the first current voltage/X1 is defined as the first average voltage, by the first current voltage/（X-X1）It is defined as
Second average voltage.
Alternatively, as voltage-measuring equipment can produce error, in order to eliminate the error of measuring instrument generation, can be by
（The battery quantity of the first current voltage/the first battery subgroup）-（Voltage 4.39%/the batteries of * at batteries two ends
Battery total quantity）It is defined as the first average voltage, will（The battery number of the second current voltage/the second battery subgroup
Amount）-（The battery total quantity of the voltage 4.39%/batteries of * at batteries two ends）It is defined as the second average voltage.
Step 203, determines the first average voltage less than default monomer open-circuit voltage, or, determine the second average voltage
Less than after monomer open-circuit voltage, examined according to the relation between the first average voltage, the second average voltage and monomer open-circuit voltage
Batteries are surveyed with the presence or absence of open circuit.
Wherein, the determination method of default monomer open-circuit voltage values have multiple, including but not limited to：Electric power storage in batteries
Magnitude of voltage under the normal condition of pond.
In addition, according to the relation detection electric power storage between the first average voltage, the second average voltage and monomer open-circuit voltage
Pond group is included but is not limited to the presence or absence of open circuit, specific implementation：
1）If the first average voltage, the second average voltage are respectively less than monomer open-circuit voltage, and the first average voltage, the second average electricity
Pressure is all close to 0, it is determined that in the first battery subgroup, in battery and the second battery subgroup, battery has open circuit；
Alternatively, if the first average voltage, the second average voltage be respectively less than monomer open-circuit voltage, and the first average voltage, second
Average voltage is respectively less than 1.2 volts, it is determined that in the first battery subgroup, in battery and the second battery subgroup, battery is equal
There is open circuit.
2）If the first average voltage, the second average voltage are respectively less than monomer open-circuit voltage, but the first average voltage, second flat
Voltage is non-all close to 0, it is determined that the two ends of batteries have open circuit；
Alternatively, if the first average voltage, the second average voltage be respectively less than monomer open-circuit voltage, but the first average voltage, second
Average voltage is non-to be less than 1.2 volts, it is determined that the two ends of batteries have open circuit.
3）If the first average voltage is less than monomer open-circuit voltage, but the second average voltage is not less than monomer open-circuit voltage, then
Determine that the battery in the second battery subgroup has open circuit；
4）If the first average voltage is not less than monomer open-circuit voltage, but the second average voltage is less than monomer open-circuit voltage, it is determined that
There is open circuit in the battery in the first battery subgroup.
Additionally, in order to avoid due to the first average voltage, the inaccurate erroneous judgement for causing battery pack open circuit of the second average voltage,
This step can also be realized in the following way：
The first average voltage is determined less than default monomer open-circuit voltage, or, determine that the second average voltage is opened a way less than monomer
After voltage,
1）Time delay Preset Time；
2）Step 201 and step 202 is re-executed after time delay；
3）The first average voltage after re-executing is determined less than monomer open-circuit voltage, or, second after re-executing is average
Voltage is less than the second average voltage after monomer open-circuit voltage, according to the first average voltage after re-executing, after re-executing
And the relation detection batteries between monomer open-circuit voltage are with the presence or absence of open circuit.
The method that the present embodiment is provided, determines the first current voltage of the first battery subgroup in batteries, and determines
Second current voltage of the second battery subgroup in batteries；That first battery subgroup is determined according to the first current voltage
One average voltage, and the second average voltage of the second battery subgroup is determined according to the second current voltage；Determine the first average electricity
Pressure is less than default monomer open-circuit voltage, or, the second average voltage is determined less than after monomer open-circuit voltage, average according to first
Relation detection batteries between voltage, the second average voltage and monomer open-circuit voltage are with the presence or absence of open circuit, it is achieved that store
The automatic detection of battery open circuit.
Embodiment two
The present embodiment is with the device busy power supply shown in Fig. 5：DC45V（Volt）- 300V, environment temperature：- 20 DEG C -45 DEG C, phase
To humidity：In the working environment of 0-90%, a kind of battery pack open circuit detection method that the application present invention is provided carries out battery pack open circuit
As a example by the scene of detection, again a kind of battery pack open circuit detection method that the present invention is provided is described in detail.
As shown in figure 5 above, batteries open circuit detecting device is by processor（MCU）, packet discharge module, battery component
Section voltage sample module, batteries charging and discharging currents detection module, human-computer interaction interface, alarm output module and responsible data
The communication module composition of upload.
Battery current sampling module is by two high precision electric current transducers and the independent 24 bit AD sample circuit groups of two-way
Into, real-time detection is carried out to the charging and discharging currents of battery on the one hand, on the other hand with packet discharge module coordinate realize electric power storage
The detection of pond open circuit；
To batteries terminal voltage, leading portion voltage, back segment voltage carries out real-time monitoring to batteries segmentation voltage sample module；
Man-machine interface part is equipped with high-quality button using color LCD screen, provides the user interface display directly perceived, comfortable and fast
The parameter setting of speed；
Alarm output module includes sound and light alarm and passive output contact warning contact, when accumulator battery voltage is too high, too low or
Warning information can be sent during open circuit；
Communication module provides RS232 and RS485 interfaces, can pass through the interface by the terminal voltage of batteries, discharge and recharge electricity
Flow and cut-off line state and be uploaded to master system.
In addition, the device shown in Fig. 5 provides the binding post shown in Fig. 6 supplies connection.
As shown in fig. 6, binding post is：
Power supply terminal：Vss, Mid, Vcc connect the negative voltage side of batteries, intermediate point and positive power source terminal respectively；
Current sensor：G, M ,-,+corresponding G, M with the current sensor being equipped with ,+,-be connected；
Communication alarm terminal：X1, X2 are that dead electricity alerts contact；Y1, Y2 are connect for fault warning；B, A are RS485 communication interfaces.
And the device shown in Fig. 5, with following technical indicator：
Voltage measurement passage：3；
Voltage measurement scope：0—300V；
DC voltage measurement resolution ratio：0.1V；
Voltage measurement accuracy：≤0.2%；
Current measuring range：-100A—+100A；
DC current measurement resolution ratio：0.1A；
Current measurement precision：≤1%；
Open-circuit current judges thresholding（Predetermined threshold value）：0.3A；
Color liquid crystal screen dimensions：2.8 it is very little；
Color LCD screen resolution ratio：65536 colors, 320x240.
Referring to Fig. 7, the method flow that the present embodiment is provided is specific as follows：
First, the total joint number of battery, leading portion battery joint number, monomer open-circuit voltage are arranged by man-machine interface.
For example arranged by the interface shown in Fig. 8.
The total joint number of battery：Set total joint number of monitored batteries；
Leading portion battery number：Set the battery joint number between the first segment battery that tap and batteries positive pole start；
Monomer open-circuit voltage：Set the monomer average voltage level for judging batteries open circuit, the parameter and accumulator cell charging and discharging electricity
Stream judges batteries connection status jointly；
Project that can be to choosing after acknowledgement key is pressed under the interface shown in Fig. 8 is pressed " front page " or " page afterwards " key and is modified, short
Press " front page " selected project of key press Jia 1 arrange, length press " front page " selected project of key press add " 10 " setting；Press " page afterwards "
Key is then pressed and subtracts 1 or the setting that subtracts 10.
Secondly, real-time monitoring is carried out to batteries, when floating current is less than 0.3A, detection leading portion or back segment are averagely electric
The size of pressure, the average voltage are contrasted with the monomer open-circuit voltage for setting, and if less than monomer open-circuit voltage, are then prolonged
When, the multilevel iudge battery of a leading portion and back segment average voltage and threshold value is carried out after the completion of time delay again with the presence or absence of opening
Road, and by showing interface judged result as shown in Figure 9.
1）If the leading portion average voltage for obtaining again, the back segment average voltage for obtaining again are respectively less than monomer open-circuit voltage,
And leading portion average voltage, back segment average voltage are respectively less than 1.2 volts, it is determined that leading portion and back segment are opened a way；
2）If leading portion average voltage, back segment average voltage are respectively less than monomer open-circuit voltage, but leading portion average voltage, back segment are averagely electric
Pressure is non-to be respectively less than 1.2 volts, it is determined that the two ends of batteries have open circuit（Such as Figure 10）；
3）If leading portion average voltage is less than monomer open-circuit voltage, but back segment average voltage is not less than monomer open-circuit voltage, it is determined that
Back segment is opened a way（Such as Figure 11）；
4）If leading portion average voltage is not less than monomer open-circuit voltage, but back segment average voltage is less than monomer open-circuit voltage, it is determined that
Leading portion is opened a way（Such as Figure 12）.
In addition, the device shown in Fig. 5 can also pass through the showing interface history testing result shown in Figure 13.
Wherein,
Sequence number：The numbering of historical record data, recent occurrence part show above；
Classification：Battery pack open circuit fault category；
Time：The time that battery pack open circuit failure occurs；
Pressing " confirmation " key under the page can carry out page turn over operation, press " return " key and return to historical record first page.Length is by " really
Recognize " key can remove historical record.
The method that the present embodiment is provided, determines the first current voltage of the first battery subgroup in batteries, and determines
Second current voltage of the second battery subgroup in batteries；That first battery subgroup is determined according to the first current voltage
One average voltage, and the second average voltage of the second battery subgroup is determined according to the second current voltage；Determine the first average electricity
Pressure is less than default monomer open-circuit voltage, or, the second average voltage is determined less than after monomer open-circuit voltage, average according to first
Relation detection batteries between voltage, the second average voltage and monomer open-circuit voltage are with the presence or absence of open circuit, it is achieved that store
The automatic detection of battery open circuit.
Embodiment three
Present embodiments provide a kind of battery pack open circuit detection means, the battery is located in batteries, referring to Figure 14, due to
The principle of battery pack open circuit detection means solve problem and the battery pack open circuit detection method shown in embodiment one or embodiment two
Similar, the therefore enforcement of the device may refer to the embodiment of embodiment one or the method shown in embodiment two, repeat part not
Repeat again.
The battery pack open circuit detection means that the present embodiment is provided, including：
First determining module 1401, for determining the first current voltage of the first battery subgroup in batteries, and determines storage
Second current voltage of the second battery subgroup in battery pack, the first battery subgroup is by the battery for being located at pre-terminated tap leading portion
Composition, the second battery subgroup by be located at tap back segment batteries into, or, the first battery subgroup by be located at tap after
The batteries of section into, the second battery subgroup by be located at the batteries of tap leading portion into；
Second determining module 1402, the first current voltage for being determined according to the first determining module 1401 determine the first battery
First average voltage of subgroup, and the second current voltage determined according to the first determining module 1401 determines the second battery subgroup
The second average voltage；
Detection module 1403, for determining that the first average voltage is less than default monomer open-circuit voltage, or, determine that second is average
After voltage is less than monomer open-circuit voltage, according to the pass between the first average voltage, the second average voltage and monomer open-circuit voltage
System's detection batteries are with the presence or absence of open circuit.
Alternatively, detection module 1403, for being respectively less than monomer open circuit electricity when the first average voltage, the second average voltage
Pressure, and the first average voltage, the second average voltage are when being respectively less than 1.2 volts, determines in the first battery subgroup battery and the
In two battery subgroups there is open circuit in battery；When the first average voltage, the second average voltage are respectively less than monomer open-circuit voltage,
But when the first average voltage, the second average voltage are non-respectively less than 1.2 volts, determine that the two ends of batteries have open circuit；When first
Average voltage be less than monomer open-circuit voltage, but the second average voltage be not less than monomer open-circuit voltage when, determine the second electric power storage pond
There is open circuit in the battery in group；When the first average voltage is not less than monomer open-circuit voltage, but the second average voltage is less than monomer
During open-circuit voltage, determine that the battery in the first battery subgroup has open circuit.
Alternatively, detection module 1403, after being additionally operable to time delay Preset Time, re-execute the first storage in determination batteries
First current voltage of battery subgroup, and determine the second current voltage of the second battery subgroup in batteries, according to first
Current voltage determines the first average voltage of the first battery subgroup, and determines the second battery subgroup according to the second current voltage
The second average voltage；The first average voltage after re-executing is determined less than monomer open-circuit voltage, or, after re-executing
Second average voltage is less than monomer open-circuit voltage.
Alternatively, in batteries, the either end of arbitrary battery picks out a tap；
First determining module 1401, for determining the first current voltage and according to the voltage at batteries two ends and tap voltage
Two current voltages；
Second determining module 1402, for inciting somebody to action（The battery quantity of the first current voltage/the first battery subgroup）-（Battery
The battery total quantity of the voltage 4.39%/batteries of * at group two ends）It is defined as the first average voltage, will（Second current voltage/
The battery quantity of the second battery subgroup）-（The battery total quantity of the voltage 4.39%/batteries of * at batteries two ends）
It is defined as the second average voltage.
Referring to Figure 15, the device also includes：
3rd determining module 1404, for determining the floating current of batteries less than 0.3 peace.
The device that the present embodiment is provided, determines the first current voltage of the first battery subgroup in batteries, and determines
Second current voltage of the second battery subgroup in batteries；That first battery subgroup is determined according to the first current voltage
One average voltage, and the second average voltage of the second battery subgroup is determined according to the second current voltage；Determine the first average electricity
Pressure is less than default monomer open-circuit voltage, or, the second average voltage is determined less than after monomer open-circuit voltage, average according to first
Relation detection batteries between voltage, the second average voltage and monomer open-circuit voltage are with the presence or absence of open circuit, it is achieved that store
The automatic detection of battery open circuit.
Claims (10)
1. a kind of battery pack open circuit detection method, the battery are located in batteries, it is characterised in that methods described, bag
Include：
Step 201, determines the first current voltage of the first battery subgroup in the batteries, and determines the batteries
In the second battery subgroup the second current voltage, the first battery subgroup by be located at pre-terminated tap leading portion batteries
Into, the second battery subgroup by be located at the batteries of the tap back segment into, or, the first battery subgroup by
The batteries of the tap back segment are located at into the second battery subgroup is by the batteries for being located at the tap leading portion
Into；
Step 202, according to the first average voltage that first current voltage determines the first battery subgroup, and according to institute
State the second average voltage that the second current voltage determines the second battery subgroup；
Step 203, determines first average voltage less than default monomer open-circuit voltage, or, determine that described second is average
After voltage is less than the monomer open-circuit voltage, according to first average voltage, second average voltage and the monomer
Relation between open-circuit voltage detects the batteries with the presence or absence of open circuit.
2. method according to claim 1, it is characterised in that in step 203 according to first average voltage, described
Relation between second average voltage and the monomer open-circuit voltage detects the batteries with the presence or absence of open circuit, concrete bag
Include：
If first average voltage, second average voltage are respectively less than the monomer open-circuit voltage, and described first average
Voltage, second average voltage are respectively less than 1.2 volts, it is determined that battery and described second in the first battery subgroup
In battery subgroup there is open circuit in battery；
If first average voltage, second average voltage are respectively less than the monomer open-circuit voltage, but described first average
Voltage, second average voltage are non-to be respectively less than 1.2 volts, it is determined that the two ends of the batteries have open circuit；
If first average voltage is less than the monomer open-circuit voltage, but second average voltage is opened not less than the monomer
Road voltage, it is determined that the battery in the second battery subgroup has open circuit；
If first average voltage is not less than the monomer open-circuit voltage, but second average voltage is opened less than the monomer
Road voltage, it is determined that the battery in the first battery subgroup has open circuit.
3. method according to claim 1 and 2, it is characterised in that step 203 determines first average voltage executing
Default monomer open-circuit voltage is less than, or, determine that second average voltage, less than after the monomer open-circuit voltage, is executed
The storage is detected according to the relation between first average voltage, second average voltage and the monomer open-circuit voltage
Before battery pack is with the presence or absence of open circuit, also include：
After time delay Preset Time, step 201 and step 202 is re-executed；
The first average voltage after re-executing is determined less than the monomer open-circuit voltage, or, second after re-executing is flat
Voltage is less than the monomer open-circuit voltage.
4. method according to claim 3, it is characterised in that before execution step 201, also include：
In the batteries, the either end of arbitrary battery picks out a tap；
The step 201, specifically includes：
First current voltage and the second current voltage are determined according to the voltage at the batteries two ends and the tap voltage；
The step 202, specifically includes：
Will（The battery quantity of the first current voltage/the first battery subgroup）-（The voltage * at the batteries two ends
The battery total quantity of the 4.39%/batteries）It is defined as the first average voltage, will（Second current voltage/the second electric power storage
The battery quantity of pond group）-（The battery total quantity of the 4.39%/batteries of voltage * at the batteries two ends）
It is defined as the second average voltage.
5. method according to claim 4, it is characterised in that before execution step 201, also include：
Determine the floating current of the batteries less than 0.3 peace.
6. a kind of battery pack open circuit detection means, the battery are located in batteries, it is characterised in that described device, bag
Include：
First determining module, for determining the first current voltage of the first battery subgroup in the batteries, and determines institute
The second current voltage of the second battery subgroup in batteries is stated, the first battery subgroup is by positioned at pre-terminated tap leading portion
Batteries into, the second battery subgroup by be located at the batteries of the tap back segment into, or, described first stores
Battery subgroup is by the batteries positioned at the tap back segment into the second battery subgroup is by positioned at the tap leading portion
Batteries into；
Second determining module, the first current voltage for being determined according to first determining module determine first battery
First average voltage of subgroup, and the second current voltage determined according to first determining module determines second battery
Second average voltage of subgroup；
Detection module, for determining first average voltage less than default monomer open-circuit voltage, or, determine described second
Average voltage less than after the monomer open-circuit voltage, according to first average voltage, second average voltage and described
Relation between monomer open-circuit voltage detects the batteries with the presence or absence of open circuit.
7. device according to claim 6, it is characterised in that the detection module, for when first average voltage,
Second average voltage is respectively less than the monomer open-circuit voltage, and first average voltage, second average voltage are equal
During less than 1.2 volts, determine in the first battery subgroup that battery is deposited in battery and the second battery subgroup
In open circuit；When first average voltage, second average voltage are respectively less than the monomer open-circuit voltage but described first flat
When voltage, second average voltage are non-respectively less than 1.2 volts, determine that the two ends of the batteries have open circuit；When described
First average voltage be less than the monomer open-circuit voltage, but second average voltage be not less than the monomer open-circuit voltage when,
Determine that the battery in the second battery subgroup has open circuit；When first average voltage is opened a way not less than the monomer
Voltage, but second average voltage be less than the monomer open-circuit voltage when, determine the electric power storage in the first battery subgroup
There is open circuit in pond.
8. the device according to claim 6 or 7, it is characterised in that the detection module, is additionally operable to time delay Preset Time
Afterwards, the first current voltage for determining the first battery subgroup in the batteries is re-executed, and determines the batteries
In the second battery subgroup the second current voltage, that the first battery subgroup is determined according to first current voltage
One average voltage, and the second average voltage of the second battery subgroup is determined according to second current voltage；Determine weight
The first average voltage after new execution is less than the monomer open-circuit voltage, or, the second average voltage after re-executing is less than
The monomer open-circuit voltage.
9. device according to claim 8, it is characterised in that arbitrary termination of arbitrary battery in the batteries
Go out a tap；
According to the voltage at the batteries two ends and the tap voltage, first determining module, for determining that first is current
Voltage and the second current voltage；
Second determining module, for inciting somebody to action（The battery quantity of the first current voltage/the first battery subgroup）-（The storage
The battery total quantity of the 4.39%/batteries of voltage * at battery pack two ends）It is defined as the first average voltage, will（Second
The battery quantity of current voltage/the second battery subgroup）-（4.39%/the batteries of voltage * at the batteries two ends
The battery total quantity of group）It is defined as the second average voltage.
10. device according to claim 9, it is characterised in that described device, also includes：
3rd determining module, for determining the floating current of the batteries less than 0.3 peace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610965081.8A CN106501725A (en) | 2016-11-04 | 2016-11-04 | A kind of battery pack open circuit detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610965081.8A CN106501725A (en) | 2016-11-04 | 2016-11-04 | A kind of battery pack open circuit detection method and device |
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| CN106501725A true CN106501725A (en) | 2017-03-15 |
Family
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| CN201610965081.8A Withdrawn CN106501725A (en) | 2016-11-04 | 2016-11-04 | A kind of battery pack open circuit detection method and device |
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| Country | Link |
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| CN (1) | CN106501725A (en) |
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