CN103926450B - Busbar voltage detection method and circuit - Google Patents
Busbar voltage detection method and circuit Download PDFInfo
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- CN103926450B CN103926450B CN201410172492.2A CN201410172492A CN103926450B CN 103926450 B CN103926450 B CN 103926450B CN 201410172492 A CN201410172492 A CN 201410172492A CN 103926450 B CN103926450 B CN 103926450B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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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]
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Abstract
The embodiment of the present invention provides a kind of busbar voltage detection method and circuit.This busbar voltage detecting circuit includes: battery circuit, busbar positive pole testing circuit and busbar negative pole testing circuit；Described first end of busbar positive pole testing circuit is connected with the busbar positive pole of described battery circuit, and with the reference ground in described battery circuit altogether, the intrinsic standoff ratio of described busbar positive pole testing circuit is the first intrinsic standoff ratio to the second end of described busbar positive pole testing circuit；Described first end of busbar negative pole testing circuit is connected with the busbar negative pole of described battery circuit, and with the described reference ground in described battery circuit altogether, the intrinsic standoff ratio of described busbar negative pole testing circuit is the second intrinsic standoff ratio to the second end of described busbar negative pole testing circuit.By to busbar positive pole testing circuit and the first voltage of busbar negative pole testing circuit and the second voltage with the first intrinsic standoff ratio and the computing of the second intrinsic standoff ratio, obtain busbar voltage, solve veneer in prior art and connect the pressure reduction problem caused, improve the degree of accuracy of busbar voltage detecting.
Description
Technical field
The present embodiments relate to circuit field, particularly relate to a kind of busbar voltage detection method and circuit.
Background technology
In power-supply management system, it will usually employing battery is as standby electricity equipment, for ensureing and extending battery
In the life-span, need battery is carried out intelligent management.During the management to battery, need to check battery electricity
Road some parameters in application process, such as: the detection of busbar voltage, cell voltage, battery current,
Battery fuse detection etc..
Fig. 1 is existing busbar voltage detecting circuit schematic diagram.As it is shown in figure 1, this testing circuit includes:
Battery circuit 11, differential detection circuit 12 and change-over circuit 13.Wherein, battery circuit 11 is by electricity
The loop of the composition such as pond, catalyst, diverter, sky switch, relay, diode, prior art
In, the detection for busbar voltage depends on the busbar positive pole+48V end connection amplifier at battery circuit
The in-phase end of circuit, the busbar negative pole-48V end at battery circuit passes through change-over circuit 11, forms a difference
Go-on-go slowdown monitoring circuit 12, this differential detection circuit 12 and change-over circuit 13 are on same veneer.By this
Veneer realizes the detection of the busbar voltage for battery circuit.
Change-over circuit 13 of the prior art needs connection with busbar negative pole-48 end of battery circuit,
Circuit powers on and flows by causing pressure reduction, additionally when exchange has a power failure, after reserve battery enables, and catalyst
Can disconnect, the simulation in differential detection circuit (Analog ground is called for short AGND) publicly loses
Reference point, all can cause the degree of accuracy of busbar voltage detecting result.
Summary of the invention
The embodiment of the present invention provides a kind of busbar voltage detection method and circuit, by detecting busbar positive pole
Circuit and the first voltage of busbar negative pole testing circuit and the second voltage are with the first intrinsic standoff ratio and the second intrinsic standoff ratio
Computing, obtain busbar voltage, solve veneer in prior art and connect the pressure reduction problem caused, improve
The degree of accuracy of busbar voltage detecting.
First aspect present invention provides a kind of busbar voltage detecting circuit, including:
Battery circuit, busbar positive pole testing circuit and busbar negative pole testing circuit；
Described first end of busbar positive pole testing circuit is connected with the busbar positive pole of described battery circuit, described
Reference in second end of busbar positive pole testing circuit and described battery circuit altogether, described busbar positive pole
The intrinsic standoff ratio of testing circuit is the first intrinsic standoff ratio；
Described first end of busbar negative pole testing circuit is connected with the busbar negative pole of described battery circuit, described
In second end of busbar negative pole testing circuit and described battery circuit described with reference to ground altogether, described busbar
The intrinsic standoff ratio of negative pole testing circuit is the second intrinsic standoff ratio.
In conjunction with first aspect, in the first possible embodiment of first aspect, described busbar positive pole
Testing circuit includes at least one divider resistance；Described busbar negative pole testing circuit includes at least one dividing potential drop
Resistance.
In conjunction with the first possible embodiment of first aspect, the reality that the second in first aspect is possible
Executing in mode, described busbar positive pole testing circuit includes two or more divider resistances, and described two
Individual or two or more divider resistance uses series connection and/or is connected in parallel；
Described busbar negative pole testing circuit includes two or more divider resistances, and said two or two
Individual above divider resistance uses series connection and/or is connected in parallel.
Second aspect present invention provides the detection method of a kind of busbar voltage detecting circuit, including:
Second end of detection busbar positive pole testing circuit is relative to the first voltage of reference point, and detects busbar
Second end of negative pole testing circuit is relative to the second voltage of described reference point；Wherein, described busbar positive pole
First end of testing circuit is connected with the busbar positive pole of described battery circuit, described busbar positive pole testing circuit
The second end and described battery circuit in reference altogether, the first end of described busbar negative pole testing circuit
It is connected with the busbar negative pole of described battery circuit, the second end of described busbar negative pole testing circuit and described electricity
Described reference ground in the circuit of pond is altogether；
According to described first voltage, described second voltage, the first dividing potential drop of described busbar positive pole testing circuit
Ratio and the second intrinsic standoff ratio of described busbar negative pole testing circuit, obtain busbar voltage.
In conjunction with second aspect, in the first possible embodiment of second aspect, described in described basis
First voltage, described second voltage, the first intrinsic standoff ratio of described busbar positive pole testing circuit and described mother
Second intrinsic standoff ratio of row's negative pole testing circuit, before obtaining busbar voltage, also includes:
Described first voltage and described second voltage are carried out analog digital conversion.
In conjunction with the first possible embodiment of second aspect, the reality that the second in second aspect is possible
Execute in mode, described according to described first voltage, described second voltage, described busbar positive pole testing circuit
The first intrinsic standoff ratio and the second intrinsic standoff ratio of described busbar negative pole testing circuit, obtain busbar voltage, bag
Include:
Described first voltage and described first intrinsic standoff ratio are done product calculation, obtains the detection of described busbar positive pole
First output voltage of circuit；
Described second voltage and described second intrinsic standoff ratio are done product calculation, obtains the detection of described busbar negative pole
Second output voltage of circuit；
Described first output voltage and described second output voltage are done difference operation, obtains described busbar electricity
Pressure.
The busbar voltage detection method of embodiment of the present invention offer and circuit, by the busbar at battery circuit
Positive pole connects busbar positive pole testing circuit, and the busbar negative pole at battery circuit connects busbar negative pole testing circuit,
Measure the second end of busbar positive pole testing circuit and the second end of busbar negative pole testing circuit respectively relative to ginseng
First voltage of examination point and the second voltage, and according to this first voltage, the second voltage, the detection of busbar positive pole
First intrinsic standoff ratio of circuit and the second intrinsic standoff ratio of busbar negative pole testing circuit, computing obtains busbar voltage,
Solve veneer in prior art and connect the pressure reduction problem caused, improve the degree of accuracy of busbar voltage detecting.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that under,
Accompanying drawing during face describes is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is existing busbar voltage detecting circuit schematic diagram；
Fig. 2 is the structural representation of busbar voltage detecting circuit embodiment one of the present invention；
Fig. 3 is the structural representation of busbar voltage detecting circuit embodiment three of the present invention；
Fig. 4 is the flow chart of busbar voltage detection method embodiment one of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
Fig. 2 is the structural representation of busbar voltage detecting circuit embodiment one of the present invention.As in figure 2 it is shown,
This busbar voltage detecting circuit includes: battery circuit 21, busbar positive pole testing circuit 22 and busbar negative pole
Testing circuit 23.First end 221 and the described battery circuit 21 of described busbar positive pole testing circuit 22
Busbar positive pole 211 connects, the second end 222 of described busbar positive pole testing circuit 22 and described battery circuit
Altogether, the intrinsic standoff ratio of described busbar positive pole testing circuit 22 is the first intrinsic standoff ratio on reference ground 213 in 21.
First end 231 of described busbar negative pole testing circuit 23 and the busbar negative pole of described battery circuit 21
213 connect, in the second end 232 of described busbar negative pole testing circuit 23 and described battery circuit 21
Described reference ground 213 altogether or connects, and the intrinsic standoff ratio of described busbar negative pole testing circuit 23 is second point
Pressure ratio.
In the present embodiment, busbar positive pole testing circuit 22 and busbar negative pole testing circuit 23 are outer being connected on
The busbar positive pole 211 of battery circuit 21 and the bleeder circuit at busbar negative pole 212 two ends, for battery electricity
The voltage at two ends, road 21 carries out dividing potential drop, can be made up of arbitrary sectional pressure element, adjusts according to practical situation
The parameter of concrete element, the first intrinsic standoff ratio of this busbar positive pole testing circuit 22 and busbar negative pole testing circuit
Second intrinsic standoff ratio of 23 must determine before connecting this testing circuit, this first intrinsic standoff ratio and the second dividing potential drop
Ratio can be identical, it is also possible to differs.Which kind of mode to determine that the intrinsic standoff ratio present invention does not limits by.
Busbar positive pole testing circuit 22 and busbar negative pole testing circuit 23 can connect according to the demand of system
In corresponding position, forming the big closed loop of system, test point is the most flexible.
The busbar voltage detecting circuit that the embodiment of the present invention provides, by the busbar positive pole at battery circuit even
Connecing busbar positive pole testing circuit, the busbar negative pole at battery circuit connects busbar negative pole testing circuit, according to
First intrinsic standoff ratio of busbar positive pole testing circuit and the second intrinsic standoff ratio of busbar negative pole testing circuit, obtain mother
Row's voltage, solves veneer in prior art and connects the pressure reduction problem caused, improve busbar voltage detecting
Degree of accuracy, and make the detection to battery circuit the most flexible.
In busbar voltage detecting circuit embodiment two, on the basis of the embodiment shown in above-mentioned Fig. 1,
Preferably, described busbar positive pole testing circuit 22 includes at least one divider resistance, and described busbar negative pole is examined
Slowdown monitoring circuit 23 includes at least one divider resistance.
In the present embodiment, busbar positive pole testing circuit 22 or busbar negative pole testing circuit 23 can be by dividing
Piezoresistance forms, and the quantity for divider resistance does not limits, and can select suitably resistance according to practical situation
Value and number.
Optionally, described busbar positive pole testing circuit 22 includes two or more divider resistances, and institute
State two or more divider resistances use series connection and/or be connected in parallel；Described busbar negative pole testing circuit
23 include two or more divider resistances, and said two or two or more divider resistance use series connection
And/or be connected in parallel.
In the present embodiment, when busbar positive pole testing circuit 22 or busbar negative pole testing circuit 23 are by multiple
During divider resistance composition, the connected mode of the plurality of divider resistance can be series, parallel, or arbitrarily
Connection in series-parallel combination.Special structure and the principle taking an example for illustration this busbar crossing detector circuit below:
Fig. 3 is the structural representation of busbar voltage detecting circuit embodiment three of the present invention, the electricity of the present embodiment
Pond is the circuit inner structure present invention do not limit, and can be to be opened by battery, catalyst, diverter, sky
The busbar circuit of the composition such as pass, relay, diode, it is also possible to in other power-supply management systems
Power supply circuits.As it is shown on figure 3, busbar positive pole testing circuit 22 in the present embodiment by divider resistance R12,
R13, R14, R15, R16, R17 form, wherein, R12, R13, R14, R15 be connected in parallel
R16 with R17 be sequentially connected in series, the resistance of these divider resistances can select according to practical situation,
First end 221 of this busbar positive pole testing circuit 22 is connected with the busbar positive pole 211 of battery circuit 21,
Second end 222 altogether or is connected with the reference ground 213 within battery circuit 21.Busbar negative pole detection electricity
Road 23 is made up of divider resistance R18, R19, R20, R21, R22, R23, wherein, R18, R10,
R20, R21 are sequentially connected in series with R22 with R23 being connected in parallel, and the resistance of these divider resistances can
To select according to practical situation, the first end 232 of this busbar negative pole testing circuit 22 and battery circuit 21
Busbar negative pole 212 connect, the second end 231 and reference battery circuit 21 within 213 altogether.?
Before connecting this busbar voltage detecting circuit, it is thus necessary to determine that busbar positive pole testing circuit 22 and the inspection of busbar negative pole
First intrinsic standoff ratio of slowdown monitoring circuit 23 and the second intrinsic standoff ratio, can be by by busbar positive pole testing circuit 22 even
It is connected in other power supply circuits, measures by the magnitude of voltage after this busbar positive pole testing circuit 22 dividing potential drop, and
Obtain the ratio of the magnitude of voltage before the magnitude of voltage after this dividing potential drop and dividing potential drop as the first intrinsic standoff ratio, can by with
The mode of sample obtains the second intrinsic standoff ratio.
After having connected this busbar voltage detecting circuit, certain reference point determined can be selected (such as: greatly),
Measure the first voltage between the second end 222 and this selected reference point of busbar positive pole testing circuit 22, and
Measure the second voltage between the second end 232 and this selected reference point of busbar negative pole testing circuit 23, will
(Analog-to-Digital Converter is called for short by analog-digital converter for this first voltage and the second voltage
ADC) or other modes carry out analog digital conversion, and by software to the first voltage after analog digital conversion and
Second voltage carries out soft difference processing, it may be assumed that the product calculation result of the first voltage and the first intrinsic standoff ratio and the
The product calculation result of two voltages and the second intrinsic standoff ratio do difference operation, obtain final busbar voltage.
Additionally, in the present embodiment, busbar positive pole testing circuit 22 and busbar negative pole testing circuit 23 point
Piezoresistance quantity and the connected mode between it can be identical, it is also possible to different.The present embodiment does not limits.
The busbar voltage detecting circuit that the embodiment of the present invention provides, by the busbar positive pole at battery circuit even
Connect the busbar positive pole testing circuit being made up of some divider resistances, battery circuit busbar negative pole connect by
The busbar negative pole testing circuit of some divider resistances composition, according to the first dividing potential drop of busbar positive pole testing circuit
Than the second intrinsic standoff ratio with busbar negative pole testing circuit, row operation of going forward side by side obtains busbar voltage, solves existing
There is veneer in technology to connect the pressure reduction problem caused, improve the degree of accuracy of busbar voltage detecting, and make electricity
The detection of pond circuit is the most flexible.
Fig. 4 is the flow chart of busbar voltage detection method embodiment one of the present invention.As shown in Figure 4, this mother
The step of row's voltage detection method is:
S401: the second end of detection busbar positive pole testing circuit is relative to the first voltage of reference point, and examines
Survey second end, second voltage relative to described reference point of busbar negative pole testing circuit.
In the present embodiment, the first end of described busbar positive pole testing circuit and the busbar of described battery circuit
Positive pole connects, reference in the second end of described busbar positive pole testing circuit and described battery circuit altogether,
Described first end of busbar negative pole testing circuit is connected with the busbar negative pole of described battery circuit, described busbar
Second end of negative pole testing circuit is with the described reference ground in described battery circuit altogether.
S402: according to described first voltage, described second voltage, the of described busbar positive pole testing circuit
One intrinsic standoff ratio and the second intrinsic standoff ratio of described busbar negative pole testing circuit, obtain busbar voltage.
In the present embodiment, the first intrinsic standoff ratio and the second intrinsic standoff ratio are before connecting busbar voltage detecting circuit
Obtaining, the mode of this acquisition busbar voltage can be that manual detection calculates, it is also possible to is realized by software.
The busbar voltage detection method that the present embodiment provides, connects mother by the busbar positive pole at battery circuit
Row's positive pole testing circuit, the busbar negative pole at battery circuit connects busbar negative pole testing circuit, measures respectively
Second end of busbar positive pole testing circuit and the second end of busbar negative pole testing circuit are relative to the of reference point
One voltage and the second voltage, and according to this first voltage, the second voltage, the of busbar positive pole testing circuit
One intrinsic standoff ratio and the second intrinsic standoff ratio of busbar negative pole testing circuit, computing obtains busbar voltage, solves existing
There is veneer in technology to connect the pressure reduction problem caused, improve the degree of accuracy of busbar voltage detecting.
On the basis of above-mentioned embodiment illustrated in fig. 4, before step S402, in addition it is also necessary to described first electricity
Pressure and described second voltage carry out analog digital conversion.Analog digital conversion in the present embodiment can pass through analog-digital converter
(Analog-to-Digital Converter, be called for short ADC) realizes, it is possible to by corresponding chip and soft
Part realizes, and the continually varying analog quantity detected is converted into discrete digital quantity, in order to follow-up obtain
Take the computing in busbar voltage course.
Further, the specific implementation of step S402 is: to described first voltage with described first point
Pressure ratio does product calculation, obtains the first output voltage of described busbar positive pole testing circuit.To described second
Voltage and described second intrinsic standoff ratio do product calculation, obtain the second output of described busbar negative pole testing circuit
Voltage.
Described first output voltage in above-mentioned steps and described second output voltage are done difference operation,
To described busbar voltage.
Concrete detection mode is with reference to the embodiment shown in Fig. 3, and it is similar with technique effect that it realizes principle,
Here is omitted.
One of ordinary skill in the art will appreciate that: realize all or part of step of above-mentioned each method embodiment
Suddenly can be completed by the hardware that programmed instruction is relevant.Aforesaid program can be stored in a computer can
Read in storage medium.This program upon execution, performs to include the step of above-mentioned each method embodiment；And
Aforesaid storage medium includes: ROM, RAM, magnetic disc or CD etc. are various can store program code
Medium.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, rather than right
It limits；Although the present invention being described in detail with reference to foregoing embodiments, this area common
Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be modified by it,
Or the most some or all of technical characteristic is carried out equivalent；And these amendments or replacement, and
The essence not making appropriate technical solution departs from the scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a busbar voltage detecting circuit, it is characterised in that including:
Battery circuit, busbar positive pole testing circuit and busbar negative pole testing circuit；
Described first end of busbar positive pole testing circuit is connected with the busbar positive pole of described battery circuit, described
Reference in second end of busbar positive pole testing circuit and described battery circuit altogether, described busbar positive pole
The intrinsic standoff ratio of testing circuit is the first intrinsic standoff ratio；
Described first end of busbar negative pole testing circuit is connected with the busbar negative pole of described battery circuit, described
In second end of busbar negative pole testing circuit and described battery circuit described with reference to ground altogether, described busbar
The intrinsic standoff ratio of negative pole testing circuit is the second intrinsic standoff ratio.
Busbar voltage detecting circuit the most according to claim 1, it is characterised in that described busbar is just
Pole testing circuit includes at least one divider resistance；Described busbar negative pole testing circuit includes at least one point
Piezoresistance.
Busbar voltage detecting circuit the most according to claim 2, it is characterised in that described busbar is just
Pole testing circuit includes two or more divider resistances, and said two or two or more divider resistance
Use series connection and/or be connected in parallel；
Described busbar negative pole testing circuit includes two or more divider resistances, and said two or two
Individual above divider resistance uses series connection and/or is connected in parallel.
4. the detection method of a busbar voltage detecting circuit, it is characterised in that including:
Second end of detection busbar positive pole testing circuit is relative to the first voltage of reference point, and detects busbar
Second end of negative pole testing circuit is relative to the second voltage of described reference point；Wherein, described busbar positive pole
First end of testing circuit is connected with the busbar positive pole of battery circuit, the of described busbar positive pole testing circuit
Reference in two ends and described battery circuit altogether, the first end of described busbar negative pole testing circuit and institute
The busbar negative pole stating battery circuit connects, the second end of described busbar negative pole testing circuit and described battery electricity
Described reference ground in road is altogether；
According to described first voltage, described second voltage, the first dividing potential drop of described busbar positive pole testing circuit
Ratio and the second intrinsic standoff ratio of described busbar negative pole testing circuit, obtain busbar voltage.
Method the most according to claim 4, it is characterised in that described according to described first voltage,
Described second voltage, the first intrinsic standoff ratio of described busbar positive pole testing circuit and the detection of described busbar negative pole
Second intrinsic standoff ratio of circuit, before obtaining busbar voltage, also includes:
Described first voltage and described second voltage are carried out analog digital conversion.
6. according to the method described in claim 4 or 5, it is characterised in that described according to described first electricity
Pressure, described second voltage, the first intrinsic standoff ratio of described busbar positive pole testing circuit and described busbar negative pole
Second intrinsic standoff ratio of testing circuit, obtains busbar voltage, including:
Described first voltage and described first intrinsic standoff ratio are done product calculation, obtains the detection of described busbar positive pole
First output voltage of circuit；
Described second voltage and described second intrinsic standoff ratio are done product calculation, obtains the detection of described busbar negative pole
Second output voltage of circuit；
Described first output voltage and described second output voltage are done difference operation, obtains described busbar electricity
Pressure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172492.2A CN103926450B (en) | 2014-04-25 | 2014-04-25 | Busbar voltage detection method and circuit |
| PCT/CN2015/077349 WO2015161822A1 (en) | 2014-04-25 | 2015-04-24 | Busbar voltage measurement method and circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172492.2A CN103926450B (en) | 2014-04-25 | 2014-04-25 | Busbar voltage detection method and circuit |
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| CN103926450A CN103926450A (en) | 2014-07-16 |
| CN103926450B true CN103926450B (en) | 2017-01-04 |
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| CN201410172492.2A Active CN103926450B (en) | 2014-04-25 | 2014-04-25 | Busbar voltage detection method and circuit |
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| CN (1) | CN103926450B (en) |
| WO (1) | WO2015161822A1 (en) |
Families Citing this family (4)
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|---|---|---|---|---|
| CN103926450B (en) * | 2014-04-25 | 2017-01-04 | 华为技术有限公司 | Busbar voltage detection method and circuit |
| CN108152614A (en) * | 2017-11-30 | 2018-06-12 | 中航锂电（江苏）有限公司 | A kind of harness busbar detection method |
| CN209448232U (en) | 2018-12-21 | 2019-09-27 | 华为数字技术（苏州）有限公司 | A kind of controller switching equipment and distribution system |
| CN110346682B (en) * | 2019-07-12 | 2021-08-31 | 奇瑞新能源汽车股份有限公司 | Output connection state detection circuit and method for DCDC converter of electric vehicle |
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| CN1766659A (en) * | 2005-10-25 | 2006-05-03 | 珠海泰坦科技股份有限公司 | Zero automatic detection method of positive and negative busbar insulating detection sensor |
| CN103176072A (en) * | 2011-12-26 | 2013-06-26 | 上海大郡动力控制技术有限公司 | Electric vehicle busbar insulation detection device and application method thereof |
| CN103675567A (en) * | 2012-09-04 | 2014-03-26 | 贵州中烟工业有限责任公司 | Short circuit detection method and short circuit detection circuit for 380V power transformation busbar |
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| US5614807A (en) * | 1994-07-22 | 1997-03-25 | Advanced Micro Devices, Inc. | Battery charge indicator |
| CN102175906A (en) * | 2010-12-31 | 2011-09-07 | 崧顺电子（深圳）有限公司 | Voltage detection method and charging device using same |
| JP2012153417A (en) * | 2011-01-28 | 2012-08-16 | Nippon Tokan Package Kk | Bag-in-box |
| CN103502059B (en) * | 2011-05-12 | 2015-07-01 | 丰田自动车株式会社 | Collision detection device for vehicle |
| CN102298092B (en) * | 2011-05-29 | 2014-07-23 | 启明信息技术股份有限公司 | Method and device for detecting power battery insulation resistance of electric automobile |
| CN102707144B (en) * | 2012-05-24 | 2016-06-08 | 北华大学 | Power battery pack bus insulation electric resistance measuring apparatus and method |
| CN104049136A (en) * | 2013-03-11 | 2014-09-17 | 欣旺达电子股份有限公司 | High voltage cell set system isolation total voltage and insulation resistance detection circuit and detection method thereof |
| CN103926450B (en) * | 2014-04-25 | 2017-01-04 | 华为技术有限公司 | Busbar voltage detection method and circuit |
-
2014
- 2014-04-25 CN CN201410172492.2A patent/CN103926450B/en active Active
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2015
- 2015-04-24 WO PCT/CN2015/077349 patent/WO2015161822A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766659A (en) * | 2005-10-25 | 2006-05-03 | 珠海泰坦科技股份有限公司 | Zero automatic detection method of positive and negative busbar insulating detection sensor |
| CN103176072A (en) * | 2011-12-26 | 2013-06-26 | 上海大郡动力控制技术有限公司 | Electric vehicle busbar insulation detection device and application method thereof |
| CN103675567A (en) * | 2012-09-04 | 2014-03-26 | 贵州中烟工业有限责任公司 | Short circuit detection method and short circuit detection circuit for 380V power transformation busbar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103926450A (en) | 2014-07-16 |
| WO2015161822A1 (en) | 2015-10-29 |
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