CN203275584U - Insulativity test resistor network - Google Patents
Insulativity test resistor network Download PDFInfo
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- CN203275584U CN203275584U CN 201220688660 CN201220688660U CN203275584U CN 203275584 U CN203275584 U CN 203275584U CN 201220688660 CN201220688660 CN 201220688660 CN 201220688660 U CN201220688660 U CN 201220688660U CN 203275584 U CN203275584 U CN 203275584U
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- insulativity
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Abstract
The utility model discloses an insulativity test resistor network, comprising a storage battery, an electric network connected with the storage battery, a negative-terminal ground insulation test unit whose one end is connected with a negative electrode of the storage battery and the other end is connected with ground, and a positive-terminal ground insulation test unit whose one end is connected with a positive electrode of the storage battery and the other end is connected with ground. The negative-terminal ground insulation test unit comprises a negative-terminal current-limiting resistor and a negative-terminal sampling resistor connected in sequence, and a negative-terminal switch is connected in series. The positive-terminal ground insulation test unit comprises a positive-terminal current-limiting resistor and a positive-terminal sampling resistor connected in sequence, and a positive-terminal switch is connected in series. The negative-terminal current-limiting resistor and the positive-terminal current-limiting resistor are resistors in the same specification. The negative-terminal sampling resistor and the positive-terminal sampling resistor are adjustable resistors. The resistor network is provided with a voltage detection device used to detect voltage values of each electrical appliance in a system. The resistor network can detect insulativity, and is beneficial for fault early warning of insulativity, so that security of electric vehicles is improved.
Description
Technical field
The utility model relates to a kind of insulativity test resistance network.
Background technology
The battery system of electric automobile is due to high voltage, large electric current, high energy storage capacity, and is very high to the requirement of cell safety, therefore can give warning in advance very necessary when battery system short circuit, electric leakage.Present stage electric automobile electrokinetic cell, be usually placed in the tailstock or bottom, and motor is usually placed in headstock, both apart from each others, battery system will provide power supply to motor, will with wire harness more than 300 the volt high-pressure delivery go over.High-voltage wiring harness is arranged in car load, when wire harness electric leakage or short circuit, will cause the high pressure Danger Electric shock risk.The insulation detection scheme that present battery management system is not good can not carry out to the insulation fault of battery system early warning, has reduced the security of electric automobile.
The utility model content
For the insulation that realizes battery management system detects, the utility model provides a kind of design proposal of insulativity test resistance network.
A kind of insulativity test resistance network, comprise accumulator, and the power utilization network that is connected to accumulator, being provided with an end, to be connected to storage battery negative extreme, the negative terminal insulation against ground test cell of other end ground connection, and one end to be connected to accumulator positive extreme, the anode insulation against ground test cell of other end ground connection.
Concrete, described negative terminal insulation against ground test cell comprises negative terminal current-limiting resistance and the negative terminal sampling resistor that connects successively, and is serially connected with the negative terminal switch; Described anode insulation against ground test cell comprises anode current-limiting resistance and the anode sampling resistor that connects successively, and is serially connected with positive end switch.
More specifically, described negative terminal current-limiting resistance and anode current-limiting resistance are same size resistance.Described negative terminal sampling resistor and anode sampling resistor are adjustable resistance.
Further, also be provided with voltage check device for detection of the magnitude of voltage of each consumer in system.
In sum, the utility model can realize that insulativity detects, and helps the fault pre-alarming to insulativity, has improved the security of electric automobile.
Description of drawings
Fig. 1 is insulativity test resistance schematic network structure described in the utility model;
Fig. 2 is insulativity test resistance network the first test mode schematic diagram;
Fig. 3 is insulativity test resistance network the second test mode schematic diagram.
Embodiment
In order to allow those skilled in the art understand better the technical solution of the utility model, below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 1, the utility model has disclosed a kind of insulativity test resistance network, comprise accumulator C, and the power utilization network that is connected to accumulator C, be provided with an end and be connected to accumulator C negative pole end, the negative terminal insulation against ground test cell of other end ground connection, and an end is connected to accumulator C positive terminal, the anode insulation against ground test cell of other end ground connection.Described negative terminal insulation against ground test cell comprises negative terminal current-limiting resistance R3 and the negative terminal sampling resistor R4 that connects successively, and is serially connected with negative terminal switch S 2.Described anode insulation against ground test cell comprises anode current-limiting resistance R1 and the anode sampling resistor R2 that connects successively, and is serially connected with anode switch S 1.Described negative terminal current-limiting resistance R3 and anode current-limiting resistance R1 are same size resistance.Described negative terminal sampling resistor R4 and anode sampling resistor R2 are adjustable resistance.Also be provided with the voltage check device (not marking in figure) for detection of the magnitude of voltage of each consumer in system.
The concrete resistance of negative terminal sampling resistor R4 and anode sampling resistor R2 is set according to demand, and tests.Can be by the operation that disconnects respectively S2, closed S1 and disconnect S1, closed S2 during test, and detect respectively simultaneously the magnitude of voltage at accumulator C, negative terminal end sampling resistor R4 and anode sampling resistor R3 two ends by voltage check device, just can calculate respectively negative terminal insulation against ground resistance R x and anode insulation against ground resistance R y.Because accumulator C voltage when discharging and recharging has subtle change, domain of walker is in ± 10%, so need to detect accumulator C both end voltage.
When the S1 closure, when S2 disconnects, the insulation module circuit theory diagrams have as shown in Figure 2 at this moment:
Had by above:
When the S2 closure, when S1 disconnects, the insulation module circuit theory diagrams have as shown in Figure 3 at this moment:
Had by above:
Again
, have:
At this moment, calculating just can be according to relevant standard determination battery system insulativity after the value of Rx and Ry.
In order to ensure enough computational accuracies are arranged, regulate the resistance value of negative terminal sampling resistor R4 and anode sampling resistor R2, then test, by repeatedly trying to achieve Rx and Ry, verify its consistance, if inconsistent, desirable its mean value.
The present embodiment is more excellent embodiment of the present utility model; need to prove; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (6)
1. insulativity test resistance network, comprise accumulator, and the power utilization network that is connected to accumulator, it is characterized in that, being provided with an end, to be connected to storage battery negative extreme, the negative terminal insulation against ground test cell of other end ground connection, and an end to be connected to accumulator positive extreme, the anode insulation against ground test cell of other end ground connection.
2. insulativity test resistance network according to claim 1, it is characterized in that: described negative terminal insulation against ground test cell comprises negative terminal current-limiting resistance and the negative terminal sampling resistor that connects successively, and is serially connected with the negative terminal switch.
3. insulativity test resistance network according to claim 1, it is characterized in that: described anode insulation against ground test cell comprises anode current-limiting resistance and the anode sampling resistor that connects successively, and is serially connected with positive end switch.
4. according to claim 2 with 3 described insulativity test resistance networks, it is characterized in that: described negative terminal current-limiting resistance and anode current-limiting resistance are same size resistance.
5. according to claim 2 with 3 described insulativity test resistance networks, it is characterized in that: described negative terminal sampling resistor and anode sampling resistor are adjustable resistance.
6. insulativity test resistance network according to claim 1, is characterized in that: also be provided with the voltage check device for detection of the magnitude of voltage of each consumer in system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688660 CN203275584U (en) | 2012-12-14 | 2012-12-14 | Insulativity test resistor network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688660 CN203275584U (en) | 2012-12-14 | 2012-12-14 | Insulativity test resistor network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275584U true CN203275584U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220688660 Expired - Fee Related CN203275584U (en) | 2012-12-14 | 2012-12-14 | Insulativity test resistor network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076254A (en) * | 2014-06-11 | 2014-10-01 | 惠州市亿能电子有限公司 | Alternating current excitation insulation detection circuit |
-
2012
- 2012-12-14 CN CN 201220688660 patent/CN203275584U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076254A (en) * | 2014-06-11 | 2014-10-01 | 惠州市亿能电子有限公司 | Alternating current excitation insulation detection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20191214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |