CN106908729A - A kind of hand-hold type power battery PACK testers and its control method - Google Patents
A kind of hand-hold type power battery PACK testers and its control method Download PDFInfo
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- CN106908729A CN106908729A CN201710051708.3A CN201710051708A CN106908729A CN 106908729 A CN106908729 A CN 106908729A CN 201710051708 A CN201710051708 A CN 201710051708A CN 106908729 A CN106908729 A CN 106908729A
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- battery pack
- main control
- control chip
- voltage
- batteries
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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]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
The invention discloses a kind of hand-hold type power battery PACK testers and its control method, belong to battery PACK technical fields, tester includes battery PACK plug connectors, switch arrays, cell inspection circuit, main control chip and display；The input for controlling chip is connected by another road SPI interface with the output end of cell inspection circuit, and the input of cell inspection circuit is connected with the output end of switch arrays；The input of main control chip is connected by cell inspection circuit with the output end of switch arrays；Battery PACK is connected by PACK plug connectors with the input of switch arrays.A kind of control method to above-mentioned hand-hold type power battery PACK testers is also disclosed.Compared with traditional artificial method measured one by one each batteries in battery PACK using universal meter, the coverage rate of the checkability, the accuracy of inspection and inspection of battery PACK is improve, while human cost greatly reduces.
Description
Technical field
The present invention relates to battery PACK technical fields, more particularly to a kind of hand-hold type power battery PACK testers and its control
Method processed.
Background technology
Battery PACK is referred to multiple batteries encapsulation, packaging, the meaning of assembling, and in use, it is necessary to check
Whether the cabling order of battery correct in PACK, battery voltage whether the consistent, internal resistance of cell whether normal and battery current
It is whether consistent, to ensure that the battery for assembling can come into operation.
At present, the cabling order to battery in PACK is detected that mainly use manually measures electricity one by one using universal meter
The voltage difference in pond is to determine whether cabling order correct, measurement multiple batteries one by one voltages come determine battery with two side terminals,
Whether internal resistance of the internal resistance of measurement multiple batteries to determine every batteries be normal one by one.
But the method that existing this artificial use universal meter is measured one by one has more obvious defect：One is, this
Kind of method of testing, human cost is high, and efficiency is low and easy error, and manually operation makes the coverage rate of cell inspection limited.Two
It is that when loose contact or wire harness resistance one occurs in the wire harness of battery in the PACK, existing method of testing cannot
Test out, Reliability comparotive is low, reduce entrucking yield.
The content of the invention
It is existing to solve it is an object of the invention to a kind of hand-hold type power battery PACK testers and its control method
The low problem of battery PACK wire harness method of inspection efficiency.
To realize object above, the technical solution adopted by the present invention is：A kind of first aspect, there is provided hand-hold type power battery
PACK testers, the tester includes：Battery PACK plug connectors, switch arrays, cell inspection circuit, main control chip and display
Device；
The input of main control chip is connected by another road SPI interface with the output end of cell inspection circuit, cell inspection circuit
Input be connected with the output end of switch arrays；
The input of main control chip is connected by cell inspection circuit with the output end of switch arrays；
Battery PACK is connected by PACK plug connectors with the input of switch arrays.
Second aspect, there is provided a kind of control method to above-mentioned hand-hold type power battery PACK testers, the method includes：
Main control chip output gating signal controlling switch array switches over to gate each batteries in battery PACK successively；
The analog voltage signal that each batteries are exported through switch arrays in battery PACK is exported to master control after cell inspection circuit
Chip；
Main control chip is processed the voltage signal that cell inspection circuit is input into, and obtains the line sequence of each batteries in battery PACK
Information, information of voltage are simultaneously shown by display.
Compared with prior art, there is following technique effect in the present invention：The present invention passes through main control chip controlling switch array
Switch over, to gate each batteries in battery PACK successively, and then measure the line sequence letter of each batteries in battery PACK one by one
Breath, information of voltage, and line sequence information, information of voltage by battery etc. shown by display, is gone out in order to user's identification
Whether the line sequence, battery voltage information in battery PACK are correct.With traditional manually using universal meter to each in battery PACK
The method that batteries are measured one by one is compared, and improves the covering of the checkability, the accuracy of inspection and inspection of battery PACK
Face, while human cost greatly reduces.
Brief description of the drawings
Fig. 1 is a kind of structural representation of hand-hold type power battery PACK testers of offer in one embodiment of the invention；
Fig. 2 is the connection diagram of hand-hold type power battery PACK testers and battery PACK in one embodiment of the invention；
Fig. 3 is the circuit reduction schematic diagram discharged each batteries in battery PACK in one embodiment of the invention；
Fig. 4 is that a kind of flow of the control method of hand-hold type power battery PACK testers of offer in one embodiment of the invention is shown
It is intended to.
Specific embodiment
With reference to shown in Fig. 1 to Fig. 4, the present invention is described in further detail.
As shown in Figure 1 and Figure 2, present embodiment discloses a kind of hand-hold type power battery PACK testers, including：Battery
PACK plug connectors 10, switch arrays 20, cell inspection circuit 30, main control chip 40 and display 50；
The output end of main control chip 40 is connected by SPI interface all the way with display 50 respectively, by connecting line and switch arrays
20 connections；
The input of main control chip 40 is connected by another road SPI interface with the output end of cell inspection circuit 30, cell inspection
The input of circuit 30 is connected with the output end of switch arrays 20；
Battery PACK is connected by PACK plug connectors 10 with the input of switch arrays 20.
Specifically, the display 50 in the present embodiment uses 2.4 cun of LED displays of 128 × 128 resolution ratio, the display
Screen single page can show 128 characters or 64 Chinese, and low in energy consumption, and size is small, is easy to carry.Wherein display screen and master control core
Piece 40 uses SPI communication mode.
Specifically, the main control chip 40 in the present embodiment uses the DZ60 of FreeScale, and it is dynamic that the chip can provide hand-held
Two-way SPI interface required for power battery PACK testers.Wherein, SPI interface is used to drive display screen, another road SPI all the way
Interface is used to connect cell inspection circuit 30.
Specifically, by taking the battery PACK systems with 12 batteries as an example, the hand-hold type power electricity in the present embodiment is illustrated
The process of each economize on electricity cell voltage in the PACK tester collection battery PACK systems of pond：
12 batteries are by the detailed process that switch arrays 20 switch in battery PACK systems：Switch arrays 20 are used
TLP227 optocoupler metal-oxide-semiconductors, main control chip 40 controls wherein one section that the switch of optocoupler switches in 12 batteries successively to be passed through after entering
Signal OP_BV-, the OP_BV+ feeding cell inspection circuit 30 crossed after the switching of optocoupler metal-oxide-semiconductor.
It should be noted that the main effect of cell inspection circuit 30 in the present embodiment is in detection battery PACK systems
The information of voltage of each batteries.Therefore, the present embodiment does not limit the specific constructive form of cell inspection circuit 30, as long as can realize
Detect the information of voltage of battery.
Further, as shown in Fig. 2 the present embodiment discloses a kind of specific structure type of cell inspection circuit 30：Electricity
Pond inspection circuit 30 includes analog-digital converter ADC31 and operational amplifier OP32；
The signal output part of switch arrays 20 is connected by OP32 with the input of ADC31；
The signal output part of ADC31 is connected with another road SPI interface of the main control chip 40.
Specifically, it is foregoing switch through optocoupler metal-oxide-semiconductor after signal OP_BV-, OP_BV+ feeding U3B carry out differential attenuation,
Level is shifted, and ADC31. is sent into after then being buffered through U3A
Specifically, in the present embodiment, ADC31 is chip ADS8317, and resolution ratio is 16bit, and sample frequency is 250khz, outward
Portion's benchmark is 2.5v fiducial chips, 8ppm degree temperature drifts for REF5025A.Main control chip 40 read ADC31 voltage data after,
Just the voltage of the every batteries in battery PACK systems can independently be calculated.
Further, the output end of main control chip 40 is also connected with each load in load group 60 respectively by each switch,
Each load in load group 60 is controlled to correspond to each economize on electricity accessed in battery PACK respectively with by the closure of each switch/disconnection
Pond.
Specifically, the present embodiment is measured using direct-current discharge internal resistance measurement method to the wire harness resistance in battery PACK.
By the closure/disconnection of each switch, each load in controllable load group 60 corresponds to each economize on electricity accessed in battery PACK respectively
Pond, to constitute discharge circuit.When certain switch in each switch is closed, then battery is easy in the load that the switch is connected
Corresponding certain batteries connection in PACK, now, the measurable voltage for obtaining accessing battery when loading of main control chip 40；At this
When switching off, main control chip 40 can remeasure the voltage for obtaining the battery.Main control chip 40 is measured and obtained twice according to this
Voltage can calculate the resistance of wire harness because wire harness resistance influence whether voltage acquisition precision and euqalizing current it is big
It is small, therefore, the resistance value of the present embodiment measurement wire harness has critically important practical significance.
Specifically, the rough schematic view of direct-current discharge internal resistance measurement method is as shown in figure 3, RX includes impedance of wiring harness and connector
Contact impedance, usual wire harness uses 20AWG, and its impedance is 33 milliohms/m, and connector contact resistance is 50 milliohms, then RX is usual
It is 3m × 33+50 × 2=200 milliohms.Before and after switch closure, rear end voltage difference is 0.03V or so, and being normally set up detection threshold value is
0.1V, wire harness internal resistance exception is then thought more than 0.1V.Specifically, when rear end voltage difference is more than 0.1V, then judge that line sequence occurs
Virtual connection or Wiring harness terminal are not compressed, and when voltage difference is less than 0.1V in rear end, can determine whether that wire harness is accessed good.It is further to increase
The accuracy and reliability for having added battery PACK to test.
Further, the hand-hold type power battery PACK testers in the present embodiment also include dc voltage changer DC/
DC70；
The input of DC/DC70 is connected by connecting line with main control chip 40；
First input/output terminal of DC/DC70 is connected with battery PACK systems, in the second input/output terminal and battery PACK
Each batteries connection.
Specifically, the voltage of certain batteries in battery PACK with other batteries voltage it is inconsistent when, display
50 can point out the user to carry out equilibrium, when equilibrium is carried out, main control chip 40 control DC/DC70 by the batteries it is balanced to and other
Economize on electricity cell voltage is identical.Solve current electric automobile industry, energy storage industry and battery assembling, maintenance difficult after sale in link
The problems such as.
Further, the hand-hold type power battery PACK testers in the present embodiment also include distinguishing by main control chip 40
The power circuit 80 being connected with switch arrays 20, cell inspection circuit 30 and display 50.
Specifically, the power circuit 80 in the present embodiment is filled by external power supply to the lithium polymer battery inside tester
Electricity, to cause internal lithium polymer battery to start working for other devices in tester are powered.Wherein, power circuit 80 is adopted
It is input into DC5V and is charged to the lithium polymer secondary battery inside tester by its internal charging chip TP5000.This reality
Apply example and be set as that 1A charges using 0.1ohm, lithium polymer battery is supplied after boost conversion is+5V to each circuit and display screen
Electricity.By internal battery, conveniently for tester is powered, and user can be easy to be carried to scene be operated.
As shown in figure 4, present embodiment discloses a kind of control method to above-mentioned hand-hold type power battery PACK testers,
The method comprises the following steps S1 to S3：
S1, the output gating signal controlling switch of main control chip 40 array 20 switch over to gate each section in battery PACK successively
Battery；
The analog voltage signal that each batteries are exported through switch arrays 20 in S2, battery PACK is exported after cell inspection circuit 30
To main control chip 40；
S3, main control chip 40 are processed the voltage signal that cell inspection circuit 30 is input into, and obtain respectively being economized on electricity in battery PACK
The line sequence information in pond, information of voltage are simultaneously shown by display 50.
Specifically, the information of voltage in battery PACK that user can be shown by display 50 judges the voltage of each batteries
It is whether consistent, and whether line sequence correct.Meanwhile, can also be by 40 pairs of voltages of each batteries of main control chip in the present embodiment
Information your uniformity judged and the correctness of line sequence in battery PACK judged, and direct by display 50
Judged result is shown, to point out user to be repaired.
Further, step S2 specifically includes following steps：
Each batteries are exported after decaying through operational amplifier 32 through the analog voltage signal that switch arrays 20 are exported in battery PACK
To analog-digital converter ADC31；
The analog voltage signal obtained after decay is converted into digital voltage signal by ADC31, and by digital voltage signal export to
Main control chip 40.
Further, the control method also comprises the following steps：
The output loading gating signal of main control chip 40 controls the closure/disconnection of each switch so that each load of load group 60 is corresponding
Access/depart from each batteries in battery PACK；
Main control chip 40 gathers each batteries in battery PACK and accesses/depart from information of voltage when loading and calculate each section respectively
Battery accesses/departs from voltage difference during load；
Main control chip 40 accesses/departs from voltage difference during load according to each batteries, calculates wire harness resistance information and by display
Device 50 is shown.
Further, the control method also comprises the following steps：
When the information of voltage of each batteries is inconsistent in battery PACK, main control chip 40 carries out equilibrium to the battery of uniformity difference
Treatment.
Further, the battery to uniformity difference carries out equilibrium treatment, specifically includes：
Uniformity difference battery voltage higher than other batteries voltage when, the control DC/DC70 of main control chip 40 is by the
Two inputs receive the voltage of the battery input of uniformity difference；
It is defeated by the first output end after the voltage of battery DC/DC70 poor to the uniformity higher than other batteries is amplified
Go out to battery PACK systems and discharged with the battery to uniformity difference；
When the voltage of the battery of uniformity difference is less than the voltage of other batteries, the first of the control of main control chip 40 DC/DC70
Input receives the voltage of battery PACK systems；
After DC/DC70 is processed the voltage of battery PACK systems, exported by the second output end to the battery of uniformity difference
Charged with the battery to uniformity difference.
It should be noted that the equalizing circuit in the present embodiment uses two-way active equalization, allow energy from whole electricity
Pond PACK systems are transferred to a certain batteries of battery PACK systems, and the battery to low pressure charges, it is also possible to will wherein one
The energy transfer of batteries is discharged to whole battery PACK systems with to high-tension battery.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of hand-hold type power battery PACK testers, it is characterised in that including：Battery PACK plug connectors（10）, switch arrays
Row（20）, cell inspection circuit（30）, main control chip（40）And display（50）；
Main control chip（40）Output end respectively by SPI interface and display all the way（50）Connection, by connecting line with switch
Array（20）Connection；
Main control chip（40）Input by another road SPI interface and cell inspection circuit（30）Output end connection, battery
Inspection circuit（30）Input and switch arrays（20）Output end connection；
Battery PACK passes through PACK plug connectors（10）With switch arrays（20）Input connection.
2. tester as claimed in claim 1, it is characterised in that described cell inspection circuit（30）Including analog-digital converter
ADC（31）With operational amplifier OP（32）；
Switch arrays（20）Signal output part pass through OP（32）With ADC（31）Input connection；
ADC（31）Signal output part and the main control chip（40）Another road SPI interface connection.
3. tester as claimed in claim 1 or 2, it is characterised in that described main control chip（40）Output end also pass through
Each switch respectively with load group（60）In each load connection, with by the closure of each switch/disconnections control load group（60）In
Each load correspond to each batteries accessed in battery PACK respectively.
4. tester as claimed in claim 3, it is characterised in that also including dc voltage changer DC/DC（70）；
DC/DC（70）Input pass through connecting line and main control chip（40）Connection；
DC/DC（70）The first input/output terminal be connected with battery PACK systems, in the second input/output terminal and battery PACK
Each batteries connection.
5. tester as claimed in claim 3, it is characterised in that also including by main control chip（40）Respectively with switch arrays
（20）, cell inspection circuit（30）And display（50）The power circuit of connection（80）.
6. the control method of a kind of hand-held battery PACK testers as described in claim any one of 1-5, it is characterised in that
Including：
S1, main control chip（40）Output gating signal controlling switch array（20）Switch over to gate successively in battery PACK
Each batteries；
Each batteries are through switch arrays in S2, battery PACK（20）The analog voltage signal of output is through cell inspection circuit（30）Afterwards
Export to main control chip（40）；
S3, main control chip（40）To cell inspection circuit（30）The voltage signal of input is processed, and obtains each in battery PACK
The line sequence information of batteries, information of voltage simultaneously pass through display（50）Shown.
7. method as claimed in claim 5, it is characterised in that described step S2, including：
Each batteries are through switch arrays in battery PACK（20）The analog voltage signal of output is through operational amplifier（32）After decay
Export to analog-digital converter ADC（31）；
ADC（31）The analog voltage signal obtained after decay is converted into digital voltage signal, and digital voltage signal is exported
To main control chip（40）.
8. the method as described in claim 5 or 6, it is characterised in that also include：
Main control chip（40）Output loading gating signal controls the closure/disconnection of each switch with by load group（60）Each load it is right
Each batteries in the access answered/disengaging battery PACK；
Main control chip（40）Each batteries access/depart from information of voltage when loading and calculate each in collection battery PACK respectively
Batteries access/depart from voltage difference during load；
Main control chip（40）Voltage difference during load is accessed/departed from according to each batteries, calculates wire harness resistance information and by aobvious
Show device（50）Shown.
9. method as claimed in claim 7, it is characterised in that also include：
When the information of voltage of each batteries is inconsistent in battery PACK, main control chip（40）Battery to uniformity difference is carried out
Weighing apparatus treatment.
10. method as claimed in claim 9, it is characterised in that the described battery to uniformity difference carries out equilibrium treatment, has
Body includes：
When the voltage of the battery of uniformity difference is higher than the voltage of other batteries, main control chip（40）Control DC/DC（70）It is logical
Cross the voltage that the second input receives the battery input of uniformity difference；
DC/DC（70）After the voltage of the battery poor to the uniformity higher than other batteries is amplified, by the first output end
Export to battery PACK systems and discharged with the battery to uniformity difference；
When the voltage of the battery of uniformity difference is less than the voltage of other batteries, main control chip（40）Control DC/DC（70）'s
First input end receives the voltage of battery PACK systems；
DC/DC（70）After being processed after the voltage transformation of battery PACK systems, exported to uniformity by the second output end
Poor battery is charged with the battery to uniformity difference.
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| CN201710051708.3A CN106908729B (en) | 2017-01-20 | 2017-01-20 | A kind of hand-hold type power battery PACK tester and its control method |
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|---|---|---|---|
| CN201710051708.3A CN106908729B (en) | 2017-01-20 | 2017-01-20 | A kind of hand-hold type power battery PACK tester and its control method |
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| CN106908729B CN106908729B (en) | 2019-08-09 |
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| CN109683054A (en) * | 2018-12-25 | 2019-04-26 | 常州格力博有限公司 | Battery pack voltage acquisition harness line sequence diagnostic device and method |
| CN112731163A (en) * | 2020-12-10 | 2021-04-30 | 上海空间电源研究所 | Lithium ion storage battery hand-held type monitoring devices for delivery weapon |
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| CN106908729B (en) | 2019-08-09 |
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