CN109085502A - The method for identifying micro-short circuit position inside nickel-metal hydride battery - Google Patents
The method for identifying micro-short circuit position inside nickel-metal hydride battery Download PDFInfo
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- CN109085502A CN109085502A CN201810696617.XA CN201810696617A CN109085502A CN 109085502 A CN109085502 A CN 109085502A CN 201810696617 A CN201810696617 A CN 201810696617A CN 109085502 A CN109085502 A CN 109085502A
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Abstract
The present invention provides a kind of methods of micro-short circuit position inside identification nickel-metal hydride battery, it is 0 by micro-short circuit battery discharge to SOC, in the anode of micro-short circuit battery, nickel strap is respectively welded in negative pole end, the anode of micro-short circuit battery is clamped respectively, the nickel strap of negative pole end is hung and is fully immersed in liquid nitrogen until its fully charge, by the anode of micro-short circuit battery, the nickel strap of the negative pole end positive terminal with adjustable current regulator power supply respectively, negative pole end is connected forming circuit, the initial voltage value and initial current value for setting current regulator power supply make micro-short circuit battery be powered, the voltage value and current value and the circuit energization situation for observing micro-short circuit battery and power supply of current regulator power supply are incrementally increased later, until the circuit of micro-short circuit battery and power supply disconnects, it takes out micro-short circuit battery and room temperature is shelved until it restores to room temperature, disassemble micro-short circuit Battery simultaneously searches that diaphragm is breakdown to burn position.The method of the present invention, simple possible can relatively accurately identify battery micro-short circuit position.
Description
Technical field
The present invention relates to a kind of methods of micro-short circuit position inside identification nickel-metal hydride battery.
Background technique
In the actual production process, the problem of because of its environment and production technology, many inside batteries have micro- nickel-metal hydride battery
Small short circuit is generated and cannot be identified in use in the early stage, whens by battery combination at battery modules, battery pack etc., often
Cause entire battery modules, battery pack to be unable to normal use because of the battery of a generation micro-short circuit in use, gives
Client uses and brings a great deal of trouble after sale.And the reason of battery micro-short circuit formation mainly has: (1) nickel-metal hydride battery was producing
Cheng Zhong is mixed into copper, powder ball and other conductive foreign matters, pierces through by forming brilliant thorn after battery charging and discharging circulation internal chemical reaction
Battery diaphragm leads to inside battery micro-short circuit；(2) after nickel-metal hydride battery is shelved for a long time, inside battery cobalt is precipitated to form brilliant thorn, leads
Logical battery plus-negative plate, forms short circuit.And the concrete reason for causing battery micro-short circuit is analyzed, it is micro- short to need first to find battery appearance
The specific location on road, therefore battery micro-short circuit position how is accurately identified, it is the crucial step of a comparison.
Summary of the invention
The present invention is intended to provide a kind of method of identification nickel-metal hydride battery inside micro-short circuit position, simple possible can be quickly quasi-
Really identify battery micro-short circuit position.
The present invention is realized by the following scheme:
A kind of method of identification nickel-metal hydride battery inside micro-short circuit position, is 0, Zhi Hou by micro-short circuit battery discharge to SOC
Nickel strap is respectively welded in anode, the negative pole end of micro-short circuit battery, then clamps the anode of micro-short circuit battery, the nickel strap of negative pole end respectively
Micro-short circuit battery is hung and is fully immersed in liquid nitrogen (temperature be -196 DEG C), to micro-short circuit battery in liquid nitrogen fully charge
Afterwards, by the anode of micro-short circuit battery, negative pole end nickel strap respectively with the positive terminal of adjustable current regulator power supply, negative pole end phase
Connection forming circuit, the initial voltage value and initial current value for setting current regulator power supply make micro-short circuit battery be powered, later
It incrementally increases the voltage value of current regulator power supply and current value and observes the circuit of micro-short circuit battery and current regulator power supply and be powered
Situation takes out micro-short circuit battery later and room temperature is shelved, to micro- until the circuit of micro-short circuit battery and current regulator power supply disconnects
Short circuit battery restores to room temperature, disassembles micro-short circuit battery and searches that diaphragm is breakdown to burn position, determines and identify the battery
Micro-short circuit position.Diaphragm is breakdown to burn position, as battery micro-short circuit position.It, generally can be by micro-short circuit when practical operation
Battery discharge is tested when to SOC being 0 and records battery open circuit voltage and AC internal Resistance at this time, by open-circuit voltage, exchange
Resistance is to ensure that battery is discharged.When the current value that the current instrument disk of current regulator power supply is shown is 0, then micro-short circuit electricity is judged
Pond and the circuit of current regulator power supply disconnect, and the diaphragm of the location of short circuit of micro-short circuit inside battery is by voltage breakdown at this time, outside
The fixture for connecing battery both ends nickel strap also will appear slight sparklet.It is disconnected in the circuit of micro-short circuit battery and current regulator power supply
When, the voltage value of current regulator power supply, current value at this time are recorded, so that data are complete and retrospect.
Further, the initial voltage value of the current regulator power supply be 200~400V, initial current value 150mA；Institute
The voltage value of current regulator power supply is stated to incrementally increase with the amplification of 50V.By constantly increasing the voltage value of current regulator power supply,
To puncture the diaphragm in micro-short circuit battery, so that the circuit that current regulator power supply and micro-short circuit battery are formed disconnects.
Further, the micro-short circuit battery is fully immersed in liquid nitrogen until during fully charge, and micro-short circuit is electric
Pond is connected with internal resistance test device, and internal resistance value when micro-short circuit battery fully charge is 10M Ω or less；Micro-short circuit battery freezes completely
After knot, micro-short circuit battery is disconnected with internal resistance test device.By the variation of the internal resistance numerical value on observation internal resistance test device, when interior
When resistance value is shown as 10M Ω or less, then micro-short circuit battery fully charge is determined, and record battery AC internal Resistance at this time, with
Just data are complete and trace.Under normal circumstances, micro-short circuit battery is fully immersed in liquid nitrogen 20min or more, and micro-short circuit battery is with regard to base
This fully charge.From test data it is found that internal resistance value of the normal battery in liquid nitrogen after fully charge is generally 1G Ω or so.
Further, the specific steps for being 0 by micro-short circuit battery discharge to SOC are as follows: micro-short circuit battery is used 0.2
~1C is discharged to 0.9~1.0V.
The method of micro-short circuit position, simple possible can rapidly and accurately identify electricity inside identification nickel-metal hydride battery of the invention
Pond micro-short circuit position analyzes micro-short circuit Crack cause for technical staff and provides accurate foundation, technical staff can be facilitated fast
Speed correctly finds the technical measures for solving micro-short circuit, to reduce the generation of battery micro-short circuit, reduces production cost, improves electricity
Pond quality.
Specific embodiment
The invention will be further described with reference to embodiments, but the invention is not limited to the statements of embodiment.
Embodiment 1
A kind of method of identification nickel-metal hydride battery inside micro-short circuit position, is discharged to 1.0V using 0.2C for micro-short circuit battery,
So that micro-short circuit battery SOC is 0, tests and record battery open circuit voltage and AC internal Resistance at this time；Later in micro-short circuit battery
Anode, negative pole end nickel strap is respectively welded, the anode of micro-short circuit battery, the nickel strap of negative pole end are then clamped by crocodile clip respectively
Micro-short circuit battery is hung and is fully immersed in liquid nitrogen, while micro-short circuit battery being connected with internal resistance test device, micro-short circuit
When the internal resistance value that battery impregnates in 20min or more and internal resistance test device in liquid nitrogen is shown as 10M Ω or less, then micro-short circuit is determined
Battery fully charge in liquid nitrogen, after micro-short circuit battery in liquid nitrogen after fully charge, by the anode of micro-short circuit battery, negative pole end
Nickel strap be connected respectively with the positive terminal of adjustable current regulator power supply, negative pole end forming circuit, setting voltage stabilization and current stabilization electricity
The initial voltage value in source is 300V, initial current value is that 150mA makes micro-short circuit battery be powered, later gradually with the amplification of 50V
Increase the voltage value of current regulator power supply and observe the circuit energization situation of micro-short circuit battery and current regulator power supply, until micro- short
The circuit of road battery and current regulator power supply disconnects, when the current value that the current instrument disk of current regulator power supply is shown is 0, then
Judge that the circuit of micro-short circuit battery and current regulator power supply disconnects, records the voltage value of current regulator power supply, current value at this time；It
It takes out micro-short circuit battery afterwards and room temperature is shelved, after micro-short circuit battery recovery to room temperature, disassemble micro-short circuit battery and search diaphragm
It is breakdown to burn position, determine the micro-short circuit position for identifying the battery.Diaphragm is breakdown to burn position, as battery micro-short circuit position
It sets.
Embodiment 2
A kind of method of identification nickel-metal hydride battery inside micro-short circuit position, step and the identification nickel-metal hydride battery in embodiment 1
The step of method of internal micro-short circuit position, is essentially identical, the difference is that: micro-short circuit battery is discharged to using 1C
0.9V, so that micro-short circuit battery SOC is 0；The initial voltage value of current regulator power supply is 200V.
Claims (4)
1. a kind of method of micro-short circuit position inside identification nickel-metal hydride battery, it is characterised in that: be by micro-short circuit battery discharge to SOC
0, nickel strap is respectively welded in anode, the negative pole end of micro-short circuit battery later, then clamps anode, the cathode of micro-short circuit battery respectively
Micro-short circuit battery is hung and is fully immersed in liquid nitrogen by the nickel strap at end, after fully charge, is incited somebody to action in liquid nitrogen after micro-short circuit battery
The anode of micro-short circuit battery, the nickel strap of negative pole end are connected with the positive terminal of adjustable current regulator power supply, negative pole end respectively
Forming circuit, the initial voltage value and initial current value for setting current regulator power supply make micro-short circuit battery be powered, later gradually
Increase the voltage value of current regulator power supply and observe the circuit energization situation of micro-short circuit battery and current regulator power supply, until micro- short
The circuit of road battery and current regulator power supply disconnects, and takes out micro-short circuit battery later and room temperature is shelved, to micro-short circuit battery recovery
To room temperature, disassembles micro-short circuit battery and search that diaphragm is breakdown to burn position, determine the micro-short circuit position for identifying the battery.
2. the method for identification nickel-metal hydride battery inside micro-short circuit position as described in claim 1, it is characterised in that: the pressure stabilizing is steady
The initial voltage value in galvanic electricity source is 200~400V, initial current value 150mA；The voltage value of the current regulator power supply is with 50V
Amplification incrementally increase.
3. the method for identification nickel-metal hydride battery inside micro-short circuit position as described in claim 1, it is characterised in that: the micro-short circuit
Battery is fully immersed in liquid nitrogen until during fully charge, and micro-short circuit battery is connected with internal resistance test device, micro-short circuit
Internal resistance value when battery fully charge is 10M Ω or less；After micro-short circuit battery fully charge, micro-short circuit battery and internal resistance test device
It disconnects.
4. the method for micro-short circuit position inside the identification nickel-metal hydride battery as described in claims 1 to 3 is any, it is characterised in that: institute
State the specific steps for being 0 by micro-short circuit battery discharge to SOC are as follows: micro-short circuit battery is discharged to 0.9 using 0.2~1C~
1.0V。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810696617.XA CN109085502A (en) | 2018-06-29 | 2018-06-29 | The method for identifying micro-short circuit position inside nickel-metal hydride battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810696617.XA CN109085502A (en) | 2018-06-29 | 2018-06-29 | The method for identifying micro-short circuit position inside nickel-metal hydride battery |
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| CN109085502A true CN109085502A (en) | 2018-12-25 |
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| CN201810696617.XA Pending CN109085502A (en) | 2018-06-29 | 2018-06-29 | The method for identifying micro-short circuit position inside nickel-metal hydride battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325323A (en) * | 2021-07-08 | 2021-08-31 | 湖北亿纬动力有限公司 | Battery detection method and battery detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104502A (en) * | 1986-06-30 | 1988-01-20 | 休斯航空公司 | Nickel-hydrogen accumulator with fault internal short-circuit |
| CN1782727A (en) * | 2004-12-05 | 2006-06-07 | 比亚迪股份有限公司 | Detecting method for short-circuit point of secondary cell |
| CN101136486A (en) * | 2007-08-15 | 2008-03-05 | 湖南神舟科技股份有限公司 | Method for performing short circuit detection and renovation to non-charge dry battery pack |
| CN201699097U (en) * | 2009-12-09 | 2011-01-05 | 唐炳元 | Nickel-metal hydride battery |
-
2018
- 2018-06-29 CN CN201810696617.XA patent/CN109085502A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104502A (en) * | 1986-06-30 | 1988-01-20 | 休斯航空公司 | Nickel-hydrogen accumulator with fault internal short-circuit |
| CN1782727A (en) * | 2004-12-05 | 2006-06-07 | 比亚迪股份有限公司 | Detecting method for short-circuit point of secondary cell |
| CN101136486A (en) * | 2007-08-15 | 2008-03-05 | 湖南神舟科技股份有限公司 | Method for performing short circuit detection and renovation to non-charge dry battery pack |
| CN201699097U (en) * | 2009-12-09 | 2011-01-05 | 唐炳元 | Nickel-metal hydride battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325323A (en) * | 2021-07-08 | 2021-08-31 | 湖北亿纬动力有限公司 | Battery detection method and battery detection device |
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Application publication date: 20181225 |