CN107329019A - A kind of lithium battery protection board electric discharge overcurrent protection test device - Google Patents
A kind of lithium battery protection board electric discharge overcurrent protection test device Download PDFInfo
- Publication number
- CN107329019A CN107329019A CN201710631481.XA CN201710631481A CN107329019A CN 107329019 A CN107329019 A CN 107329019A CN 201710631481 A CN201710631481 A CN 201710631481A CN 107329019 A CN107329019 A CN 107329019A
- Authority
- CN
- China
- Prior art keywords
- protection board
- lithium battery
- electronic load
- battery protection
- charge management
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 58
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 238000010998 test method Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 description 5
- 229910052493 LiFePO4 Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A kind of lithium battery protection board electric discharge overcurrent protection test device, including：Battery voltage analog circuit; the input of the battery voltage analog circuit is electrically connected with power supply; the output end of the battery voltage analog circuit is electrically connected by voltage data acquisition interface with lithium battery protection board, and the battery voltage analog circuit possesses voltage-regulation function；Electronic load instrument, the electronic load instrument is connected in series with lithium battery protection board；Charge management circuit; the positive terminal of the charge management circuit is electrically connected with electronic load instrument; the negative pole end of charge management circuit is electrically connected with lithium battery protection board, and the charge management circuit is connected with independent power supply electricity two, and power supply is provided for charge management circuit；Supplying cell; the positive terminal of the supplying cell is connected with the positive pole of electronic load instrument; the negative pole end of the supplying cell is connected by the B ends of voltage data acquisition interface with the B ends of lithium battery protection board, and the present invention is tested protection board while cost is reduced.
Description
Technical field
The invention belongs to lithium ion battery manufacture field, and in particular to lithium battery protection board electric discharge overcurrent protection test dress
Put.
Background technology
Lithium battery protection board overcurrent protection method of testing mainly has two kinds：One is tested by protection board tester,
The overdischarge stream protection value not more than 120A of overwhelming majority protection board tester setting, also there is support high current certainly at present
The cabinet-type protection board tester of electric discharge, price is mostly more than 50,000.The survey of high current lithium battery protection board can not be met
Examination demand, otherwise expensive, the purchase cost of increase user enterprise.Two be that protection board and battery core are passed through into welding assembly into electricity
Chi Zuhou by electronic load instrument to battery pack heavy-current discharge, test protection board whether overcurrent protection, this mode is only suitable for
Product inspection, it is necessary to prepare to be adapted to the battery combination of various styles, such efficiency if testing different style protection boards
It is at a fairly low.
The content of the invention
It can be realized it is an object of the invention to provide one kind and meet lithium battery protection board discharge and recharge high current excessively stream guarantor
The test device of shield, and business equipment purchase cost can be effectively reduced, while effectively improving lithium battery protection board testing efficiency
Device.
To achieve the above object, the present invention uses following technical scheme：A kind of lithium battery protection board electric discharge overcurrent protection is surveyed
Trial assembly is put, including：
Battery voltage analog circuit, the input of the battery voltage analog circuit is electrically connected with power supply, the battery electricity
The output end of pressure analog circuit is electrically connected by voltage data acquisition interface with lithium battery protection board, the battery voltage analog electricity
Road possesses voltage-regulation function；
Electronic load instrument, the electronic load instrument is connected in series with lithium battery protection board；
Charge management circuit, the positive terminal of the charge management circuit is electrically connected with electronic load instrument, charge management circuit it is negative
Extremely electrically connected with lithium battery protection board, the charge management circuit is connected with independent power supply electricity two, is Charge Management
Circuit provides power supply；
Supplying cell, the positive terminal of the supplying cell is connected with the positive pole of electronic load instrument, the negative pole end of the supplying cell
Connected by the B- ends of voltage data acquisition interface with the B- ends of lithium battery protection board.
Further, the battery voltage analog circuit is the batteries voltage analog circuits of highest 24, the cell voltage mould
Intend containing potentiometer in circuit.
Said modules are tested using following steps：
A power supplies provide dc source to battery voltage analog circuit, and it is in normal operating conditions to make lithium battery protection board, and is led to
Overvoltage data acquisition interface collects voltage；
B supplying cells provide high current to lithium battery protection board；
C power supplies two are powered to electronic load instrument, adjust the magnitude of current by electronic load instrument, and collect lithium battery protection board mistake
Fluxion value, when there is overcurrent protection, i.e. lithium battery protection board overcurrent protection value.
Compared with prior art, the beneficial effects of the present invention are：The operation principle of the present invention is exactly to simulate lithium battery
PACK truly discharges situation, and test lithium battery protection board electric discharge overcurrent protection, the present invention passes through power supply（Civil power can be used）
Dc source is provided to battery analogue circuit, battery analogue circuit exports single battery voltage so that lithium battery protection board voltage is adopted
Collection, allows lithium battery protection board to be operated in normal state, that is, allows protection board not Cross prevention, makes the electric discharge on protection board
Metal-oxide-semiconductor is in normally state, and voltage can be set to 3.2V or 3.7V, be likewise supplied with adjusting single-unit voltage function manually, realizes
Protection board is overcharged, overdischarge pressure defencive function, the different testing requirements for meeting LiFePO4 and ternary lithium battery protection board；
The effect of supplying cell is to provide high current for protection board discharge test in the present invention, can be by single-unit or multisection lithium battery group
Constitute, be connected on P- and B- two ends on protection board, i.e., individually the metal-oxide-semiconductor that discharged on protection board is discharged, according to discharge current
Size can be with flexible configuration, such as by taking highest 300A discharge currents as an example, and current source can be a section or two section capacity 100AH
Battery pack, 300A discharge currents are can be achieved with 3C electric discharges, are discharged by electronic load instrument series connection protection board, electronics
The electric current that load meter is shown is the electric current for flowing through lithium battery protection board, and the size of discharge current is adjusted by electronic load instrument,
When observation protection board there is overcurrent protection, and when there is overcurrent protection, now electric current is protection board overcurrent protection value.
The overcurrent protection that the present invention completes high current lithium battery protection board with relatively low cost is tested；The present invention can pass through
Regulation single-unit voltage, realizes that lithium battery protection board single-unit is overcharged, Cross prevention test function small volume of the present invention is easy to manually
Carry, scene is tested；Comparatively speaking, the present invention has that the construction cycle is short, and design cost is low, the features such as small volume, makees
For lithium battery manufacturing enterprise, lithium battery can gather materials on the spot completely, can be constituted completely with the poor battery core of some capability and performances,
So as to realize that the echelon of battery core is utilized.
Brief description of the drawings
For the present invention will be further described, drawings and embodiments are set forth below, it is therefore apparent that cited by the present invention
Embodiment is only a demonstration example, and those skilled in the art also can be extended out other embodiment.
Fig. 1 is attachment structure schematic diagram of the present invention.
Fig. 2 is single battery voltage analog circuits structure chart of the present invention.
Fig. 3 is four batteries voltage analog circuits structure chart of the invention.
Embodiment
As shown in figure 1, a kind of lithium battery protection board electric discharge overcurrent protection test device, including：
Battery voltage analog circuit, the input of the battery voltage analog circuit is electrically connected with power supply, the battery electricity
The output end of pressure analog circuit is electrically connected by voltage data acquisition interface with lithium battery protection board, the battery voltage analog electricity
Road possesses voltage-regulation function；
Electronic load instrument, the electronic load instrument is connected in series with lithium battery protection board；
Charge management circuit, the positive terminal of the charge management circuit is electrically connected with electronic load instrument, charge management circuit it is negative
Extremely electrically connected with lithium battery protection board, the charge management circuit is connected with independent power supply electricity two, is Charge Management
Circuit provides power supply；
Supplying cell, the positive terminal of the supplying cell is connected with the positive pole of electronic load instrument, the negative pole end of the supplying cell
Connected by the B- ends of voltage data acquisition interface with the B- ends of lithium battery protection board.
The battery voltage analog circuit is the batteries voltage analog circuits of highest 24, in the battery voltage analog circuit
Containing potentiometer, as shown in figure 1, the present invention uses single battery voltage analog circuits, certain, as shown in figure 3, can also adopt
With four batteries voltage analog circuits structure charts, other groups of numbers can be also used in principle provided by the present invention.
Embodiment 1：Lithium battery protection board overcurrent protection value method of testing：Lithium battery protection board is connected according to said structure
After electronic load instrument, mains supply is connected, if test LiFePO4 protection board, by adjusting each potentiometer by single-unit electricity
Pressure is all tuned into 3.2V or so, if test ternary lithium protection board, is tuned into 3.7V or so, lithium battery protection board is operated in normally
State（That is not guard mode）, electronic load instrument is then opened, according to the overcurrent protection value in protection board specifications parameter, phase is set
The discharge current answered, starts electronic load instrument and starts electric discharge, whether observation protection board is protected, if protection board is protected, Electronic Negative
Carry instrument discharge current and be shown as zero, then turn whether electric current observation protection board overcurrent protection state releases down, if recovering electric discharge,
Then electric current is gradually tuned up again untill protection board is protected, and the current value of electronic load instrument setting now is protection board mistake
Flow protection value.
Embodiment 2：Lithium battery protection board overcharges protection, Cross prevention method of testing：Lithium electricity is connected according to said structure
After pond protection board and electronic load instrument, switch on power, adjusting each potentiometer makes every section output voltage be 3.2V, then opens
Electronic load instrument, 0.2A or so is arranged to by discharge current, with low discharging current；Then since battery analogue circuit first segment
Potentiometer is adjusted, first segment output voltage is heightened until protection board overvoltage protection, i.e. electronic load instrument show discharge voltage value
Understand relatively low 0.3V ~ 0.7V or so at once, the magnitude of voltage of record now overcharges protection value for first segment, then slowly turns down voltage
Protection, i.e. electronic load instrument discharge voltage value, which are overcharged, to protection board releasing is increased to original value, the voltage of record now at once
It is worth and overcharges protection releasing magnitude of voltage for first segment；Then output voltage is continued to turn down while observing electronic load instrument shows voltage
Whether electric current is zero, when show value is zero, and the magnitude of voltage of record now is Cross prevention magnitude of voltage, then heightens voltage,
When electronic load instrument recovers voltage x current value, the magnitude of voltage of record now recovers magnitude of voltage for Cross prevention；By that analogy according to
Remaining section super-charge super-discharge protection voltage of secondary test.
It is clear that above-mentioned embodiment, is only one of demonstration example of the present invention, it is any provided by the present invention
Simple modifications in structure or principle belong to protection scope of the present invention.
Claims (3)
- The overcurrent protection test device 1. a kind of lithium battery protection board discharges, it is characterised in that including：Battery voltage analog circuit, the input of the battery voltage analog circuit is electrically connected with power supply, the battery electricity The output end of pressure analog circuit is electrically connected by voltage data acquisition interface with lithium battery protection board, the battery voltage analog electricity Road possesses voltage-regulation function；Electronic load instrument, the electronic load instrument is connected in series with lithium battery protection board；Charge management circuit, the positive terminal of the charge management circuit is electrically connected with electronic load instrument, charge management circuit it is negative Extremely electrically connected with lithium battery protection board, the charge management circuit is connected with independent power supply electricity two, is Charge Management Circuit provides power supply；Supplying cell, the positive terminal of the supplying cell is connected with the positive pole of electronic load instrument, the negative pole end of the supplying cell Connected by the B- ends of voltage data acquisition interface with the B- ends of lithium battery protection board.
- 2. a kind of lithium battery protection board electric discharge overcurrent protection test device according to claim 1, it is characterised in that described Battery voltage analog circuit is the batteries voltage analog circuits of highest 24, contains potentiometer in the battery voltage analog circuit.
- The overcurrent protection method of testing 3. a kind of lithium battery protection board discharges, it is characterised in that including following component：Battery voltage analog circuit, the input of the battery voltage analog circuit is electrically connected with power supply, the battery electricity The output end of pressure analog circuit is electrically connected by voltage data acquisition interface with lithium battery protection board, the battery voltage analog electricity Road possesses voltage-regulation function；Electronic load instrument, the electronic load instrument is connected in series with lithium battery protection board；Charge management circuit, the positive terminal of the charge management circuit is electrically connected with electronic load instrument, charge management circuit it is negative Extremely electrically connected with lithium battery protection board, the charge management circuit is connected with independent power supply electricity two, is Charge Management Circuit provides power supply；Supplying cell, the positive terminal of the supplying cell is connected with the positive pole of electronic load instrument, the negative pole end of the supplying cell Connected by the B- ends of voltage data acquisition interface with the B- ends of lithium battery protection board；Said modules are tested using following steps：A power supplies provide dc source to battery voltage analog circuit, and it is in normal operating conditions to make lithium battery protection board, and is led to Overvoltage data acquisition interface collects voltage；B supplying cells provide high current to lithium battery protection board；C power supplies two are powered to electronic load instrument, adjust the magnitude of current by electronic load instrument, and collect lithium battery protection board mistake Fluxion value, when there is overcurrent protection, i.e. lithium battery protection board overcurrent protection value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710631481.XA CN107329019A (en) | 2017-07-28 | 2017-07-28 | A kind of lithium battery protection board electric discharge overcurrent protection test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710631481.XA CN107329019A (en) | 2017-07-28 | 2017-07-28 | A kind of lithium battery protection board electric discharge overcurrent protection test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107329019A true CN107329019A (en) | 2017-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710631481.XA Pending CN107329019A (en) | 2017-07-28 | 2017-07-28 | A kind of lithium battery protection board electric discharge overcurrent protection test device |
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| Country | Link |
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| CN (1) | CN107329019A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337869A (en) * | 2020-03-03 | 2020-06-26 | 上海钧正网络科技有限公司 | BMS board testing device, testing system and testing method |
| CN112285463A (en) * | 2020-10-13 | 2021-01-29 | 安徽锐能科技有限公司 | Testing device and method for lithium battery protection board and storage medium |
| CN113777520A (en) * | 2021-09-16 | 2021-12-10 | 浪潮商用机器有限公司 | Test method, device, system and medium for board-mounted power supply overcurrent protection |
| CN118465568A (en) * | 2024-07-12 | 2024-08-09 | 北京博电新力电气股份有限公司 | Method and device for rapidly detecting discharge protection function of electric bicycle battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337869A (en) * | 2020-03-03 | 2020-06-26 | 上海钧正网络科技有限公司 | BMS board testing device, testing system and testing method |
| CN112285463A (en) * | 2020-10-13 | 2021-01-29 | 安徽锐能科技有限公司 | Testing device and method for lithium battery protection board and storage medium |
| CN113777520A (en) * | 2021-09-16 | 2021-12-10 | 浪潮商用机器有限公司 | Test method, device, system and medium for board-mounted power supply overcurrent protection |
| CN113777520B (en) * | 2021-09-16 | 2024-08-13 | 浪潮商用机器有限公司 | Method, device, system and medium for testing overcurrent protection of on-board power supply |
| CN118465568A (en) * | 2024-07-12 | 2024-08-09 | 北京博电新力电气股份有限公司 | Method and device for rapidly detecting discharge protection function of electric bicycle battery pack |
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Application publication date: 20171107 |