CN107546805A - A kind of method evaluated using equalizing circuit battery bag electrical design - Google Patents
A kind of method evaluated using equalizing circuit battery bag electrical design Download PDFInfo
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- CN107546805A CN107546805A CN201710828052.1A CN201710828052A CN107546805A CN 107546805 A CN107546805 A CN 107546805A CN 201710828052 A CN201710828052 A CN 201710828052A CN 107546805 A CN107546805 A CN 107546805A
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- battery core
- electrical design
- battery
- equalizing circuit
- battery bag
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Abstract
The invention discloses a kind of method evaluated using equalizing circuit battery bag electrical design, comprise the following steps：Step 1：Each battery core in mesuring battary bag is accessed in passive equalizing circuit；Step 2：The equilibrium of odd number battery core is first turned on, state maintenance time t, the pressure drop that odd number battery core is measured using voltmeter is V [odd], and actual is one group of number；Step 3：The equilibrium of even number battery core is then turned on, state maintenance time t, the pressure drop that even number battery core is measured using voltmeter is V [even], and actual is one group of number；Step 4：The variance and extreme difference of all battery core pressure drops are calculated, the result of calculation is smaller, it was demonstrated that the battery bag electrical design reasonability is higher.Beneficial effect：Extra test equipment is not increased, simply, conveniently.
Description
Technical field
The present invention relates to a kind of method evaluated using equalizing circuit battery bag electrical design.
Background technology
Because battery does not have absolute uniformity, after bunchiness in groups, the capacity mismatch between battery exceedes certain threshold
Value will influence the actually available capacity of whole battery pack.For this reason, it may be necessary to equilibrium is carried out to the battery of mismatch.In the market is using electricity
The battery bag of discharge type balancing technique is hindered, its balancing principle is in single battery core both ends parallel connection equalizing resistance, by controlling MOS to open
Close to realize enabling for equalizing resistance, using equalizing resistance heat production, consume unnecessary electricity.At present to battery bag electrical design
The method that reasonability is assessed needs more complicated by extra test equipment, process.
The problem of in correlation technique, effective solution is not yet proposed at present.
The content of the invention
For the above-mentioned technical problem in correlation technique, the present invention proposes that one kind utilizes existing passive equalizing circuit,
The method that battery bag initial stage of development is evaluated battery bag electrical design reasonability, it is simple, convenient to have the characteristics that.
Technical problem solved by the invention is realized using following technical scheme：
A kind of method evaluated using equalizing circuit battery bag electrical design, is comprised the following steps：
Step 1：Each battery core in mesuring battary bag is accessed in passive equalizing circuit；
Step:2：The equilibrium of odd number battery core is first turned on, state maintenance time t, the pressure of odd number battery core is measured using voltmeter
V [odd] is reduced to, actual is one group of number；
Step 3：The equilibrium of even number battery core is then turned on, state maintenance time t, the pressure drop that even number battery core is measured using voltmeter is
V [even], actual is one group of number；
Step 4：The variance and extreme difference of all battery core pressure drops are calculated, the result of calculation is smaller, it was demonstrated that the battery bag electrical design is closed
Rationality is higher.
Further, the battery includes even number rated voltage identical battery core.
Further, the battery includes even number rated voltage identical battery core, and each battery core is parallel with one
Equalizing resistance.
Further, the resistance of the equalizing resistance is identical.The present invention is using beneficial effect possessed by above technical scheme
Fruit：Extra test equipment is not increased, simply, conveniently.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described.
Fig. 1 be according to embodiments of the present invention it is described it is a kind of battery bag electrical design is evaluated using equalizing circuit it is electric
Schematic diagram.
In figure：
201st, terminal one；202nd, terminal two；203rd, terminal three；204th, terminal four；205th, terminal five；206th, terminal six；207th, hold
Son seven.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
As shown in figure 1, a kind of method to the evaluation of battery bag electrical design, comprises the following steps：
Step 1：Each battery core in mesuring battary bag is accessed in passive equalizing circuit.There are 6 in the mesuring battary bag
Battery core is connected, and is S1, S2, S3, S4, S5, S6 respectively, the rated voltage all same of each battery core；Will each described electricity
Core one equalizing resistance of parallel connection, is R1, R2, R3, R4, R5, R6 respectively, the resistance all same of each equalizing resistance, institute
State each equalizing resistance and be also in series with a switch respectively, the switch, equalizing resistance, battery core form passive equalizing circuit.
Step 2：The equilibrium of odd number battery core is first turned on, state maintenance time t, measures terminal one respectively with voltmeter
201 with the both ends of terminal 2 202, terminal 3 203 and the both ends of terminal 4 204, terminal 5 205 and the unlatching at the both ends of terminal 6 206 are equal
The front and rear voltage of weighing apparatus, the pressure drop that odd number battery core S1, S3, S5 is calculated is V [odd], and actual is one group of number；
Step 3：The equilibrium of even number battery core is then turned on, state maintenance time t, measures terminal 2 202 and end respectively with voltmeter
Sub 3 203 both ends, terminal 4 204 and the both ends of terminal 5 205, before and after terminal 6 206 is balanced with the unlatching at the both ends of terminal 7 207
Voltage, the pressure drop that even number battery core S2, S4, S6 is calculated are V [even], and actual is one group of number；
Step 4：The variance and extreme difference of all battery core pressure drops are calculated, the result of calculation is smaller, it was demonstrated that the battery bag electrical design is closed
Rationality is higher.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (4)
- A kind of 1. method evaluated using equalizing circuit battery bag electrical design, it is characterised in that comprise the following steps：Step 1：Each battery core in mesuring battary bag is accessed in passive equalizing circuit；Step:2：The equilibrium of odd number battery core is first turned on, state maintenance time t, the pressure of odd number battery core is measured using voltmeter V [odd] is reduced to, actual is one group of number；Step 3：The equilibrium of even number battery core is then turned on, state maintenance time t, the pressure drop that even number battery core is measured using voltmeter is V [even], actual is one group of number；Step 4：The variance and extreme difference of all battery core pressure drops are calculated, the result of calculation is smaller, it was demonstrated that the battery bag electrical design is closed Rationality is higher.
- 2. a kind of method evaluated using equalizing circuit battery bag electrical design according to claim 1, its feature are existed In the battery bag includes even number rated voltage identical battery core.
- 3. a kind of method evaluated using equalizing circuit battery bag electrical design according to claim 2, its feature are existed In each described battery core is parallel with an equalizing resistance.
- 4. a kind of method evaluated using equalizing circuit battery bag electrical design according to claim 3, its feature are existed In the resistance of the equalizing resistance is identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710828052.1A CN107546805A (en) | 2017-09-14 | 2017-09-14 | A kind of method evaluated using equalizing circuit battery bag electrical design |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710828052.1A CN107546805A (en) | 2017-09-14 | 2017-09-14 | A kind of method evaluated using equalizing circuit battery bag electrical design |
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| CN107546805A true CN107546805A (en) | 2018-01-05 |
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| CN201710828052.1A Pending CN107546805A (en) | 2017-09-14 | 2017-09-14 | A kind of method evaluated using equalizing circuit battery bag electrical design |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109557468A (en) * | 2018-12-29 | 2019-04-02 | 浙江吉利汽车研究院有限公司 | BMS passively balanced abatement detecting method, device and equalizing circuit |
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Patent Citations (4)
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| US20090039830A1 (en) * | 2003-11-20 | 2009-02-12 | Pellenc (Societe Anonyme) | Equilibrated charging method for a lithium-ion or lithium-polymer battery |
| CN102427255A (en) * | 2011-10-28 | 2012-04-25 | 东风汽车公司 | Method and device for automatically equalizing voltages of power battery groups |
| CN103645444A (en) * | 2013-12-23 | 2014-03-19 | 中国科学院电工研究所 | Mode principle based battery consistency online evaluation method and detection circuit |
| CN204243847U (en) * | 2014-12-23 | 2015-04-01 | 安徽江淮汽车股份有限公司 | A kind of battery cell voltage balance circuit of electrokinetic cell bag |
Non-Patent Citations (1)
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| CN109557468A (en) * | 2018-12-29 | 2019-04-02 | 浙江吉利汽车研究院有限公司 | BMS passively balanced abatement detecting method, device and equalizing circuit |
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Application publication date: 20180105 |