CN203422422U - Electric vehicle battery box insulation monitoring alarm system - Google Patents
Electric vehicle battery box insulation monitoring alarm system Download PDFInfo
- Publication number
- CN203422422U CN203422422U CN201320431128.4U CN201320431128U CN203422422U CN 203422422 U CN203422422 U CN 203422422U CN 201320431128 U CN201320431128 U CN 201320431128U CN 203422422 U CN203422422 U CN 203422422U
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- China
- Prior art keywords
- insulation resistance
- resistance
- microprocessor
- battery box
- battery case
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- 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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
Provided is an electric vehicle battery box insulation monitoring alarm system. The system comprises a battery box body, an insulated resistor Ri1 is arranged between a positive pole point H of the battery box body and the battery box body, and an insulated resistor Ri2 is arranged between a negative pole point L of the battery box body and the battery box body. The insulated resistor Ri1 is connected in parallel with a series circuit of a switching relay K1 and a resistor R1, and the insulated resistor Ri2 is connected in parallel with a series circuit of a switching relay K2, a resistor R2 and a resistor R3. The switching relays K1 and K2 are connected with a microprocessor used for controlling the on-off state of the switching relays K1 and K2. The joint of the resistor R2 and the resistor R3 is connected with the input end of an operational amplifier. The output end of the operational amplifier is connected with the input end of a high-precision and high-impedance analog-to-digital converter. The output end of the high-precision and high-impedance analog-to-digital converter is connected with the microprocessor. The microprocessor is connected with a main complete vehicle controller and is further connected with an alarm device.
Description
Technical field
The utility model relates to a kind of electric automobile battery box insulating monitoring warning system.
Background technology
The security of electric car power supply is the most important thing in Full Vehicle System, if use the consequence that may cause by inestimable in battery case and the uninsulated situation in the external world.Therefore, the insulation resistance of detection battery case is very necessary.Now in the management system of a lot of electric automobiles, be provided with the state of insulation that insulating monitoring module is carried out monitoring battery case, but existing insulating monitoring module exists, circuit structure is complicated, cost is high and can not effectively monitor in real time the variation of the insulating property of battery case.
Summary of the invention
The purpose of this utility model is to provide that a kind of cost is low, safe and reliable, the electric automobile battery box insulating monitoring warning system of real-time monitoring.
For reaching goal of the invention the technical solution adopted in the utility model, be:
A kind of electric automobile battery box insulating monitoring warning system, comprise Battery case, between the anodal H point of described Battery case and Battery case, there is an insulation resistance Ri1, between the negative pole L point of described Battery case and Battery case, there is an insulation resistance Ri2, it is characterized in that: the series circuit that is parallel with switch relay K1 and resistance R 1 on described insulation resistance Ri1, on described insulation resistance Ri2, be parallel with the series circuit of switch relay K2 and resistance R 2 and resistance R 3, described switch relay K1 is connected with the microprocessor of its on off state of control with K2, between described resistance R 2 and resistance R 3, junction is connected with the input end of operational amplifier, the output terminal of described operational amplifier is connected with the input end of high precision high impedance analog to digital converter, the output terminal of described high precision high impedance analog to digital converter calculates the size of insulation resistance and judges that the whether normal microprocessor of size of insulation resistance connects from the magnitude of voltage under the basis different on off states that collect, described microprocessor with receive its transmission insulation resistance normal in size signal or undesired signal and when receiving undesired signal, inform that car owner's car load primary controller is connected, on described microprocessor, be also connected with the warning device when the undesired alarm warning of insulation resistance size.
Further, described microprocessor and high precision high impedance analog to digital converter are by IIC module communication.
Further, between described microprocessor and car load primary controller, pass through CAN module communication.
Technical conceive of the present utility model is that H point and L point are respectively positive pole and the negative pole of Battery case.Suppose that the insulation resistance between H point and L point and Battery case is respectively Ri1 and Ri2.K1 and K2 are two switch relays.K1 is in parallel with Ri1 again after connecting with R1, K2 and R2 and R3 series connection and in parallel with Ri2 again.Between two groups of parallel connections, connect a line to any point on Battery case.With the common I/O mouth gauge tap relay K 1 of microprocessor and the on off state of K2.Between R2 and R3, with operational amplifier and high precision high impedance analog to digital converter, this point voltage value is changed, microprocessor is communicated by letter with high precision high impedance analog to digital converter by IIC, and the magnitude of voltage under the different on off states that collect is processed, calculate the size of insulation resistance and judge that whether the size of insulation resistance is normal, by CAN module, to car load master controller, send again the normal in size whether information of insulation resistance, when the undesired alarm device of insulation resistance size is reported to the police.
The utility model carries out analog to digital conversion according to different on off states to the voltage Vo after dividing potential drop between R2 and R3.Its course of work is as follows: first closed K2, open K1, now R2 and R3 series connection also connected and accessed on the both positive and negative polarity of Battery case with Ri1 again with Ri2 parallel connection, through operational amplifier, the analogue value is input on high precision high impedance analog to digital converter, measure the now size of Vo, by IIC, communicate by letter, microprocessor reads analog to digital conversion value and is designated as Vo1.The state that changes K1 is closed, and K2 remains unchanged.Now Ri1 is in parallel with R1, Ri2 and R2, and the resistance of R3 series connection is in parallel again.The resistance of two groups of parallel connections has accessed on the both positive and negative polarity of Battery case, passes through equally operational amplifier and analog to digital conversion, measures the now size of Vo, and microprocessor reads this value and is designated as Vo2.Microprocessor carries out data processing to the value under two kinds of different on off states above, calculates the size of insulation resistance Ri1 and Ri2, finally judges that whether the size of this resistance is normal.If normally, send insulation good signal to car load master controller; If undesired, send undesired signal to car load master controller, inform that car owner should suspend this Battery case of use, and report to the police by warning device.
The beneficial effects of the utility model: Real-Time Monitoring battery case insulation resistance, and can be by this system integration in battery management system.Insulating monitoring safe reliability is improved greatly, and testing circuit and battery altogether, have been saved the cost of level conversion, for the insulating property of car load battery case provide safe early warning, are more applicable in various cell safety guard systems application.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is process flow diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is further described, but the utility model is not confined to these embodiments.One skilled in the art would recognize that the utility model contained all alternativess, improvement project and the equivalents that within the scope of claims, may comprise.
With reference to Fig. 1, a kind of electric automobile battery box insulating monitoring warning system, comprise Battery case, between the anodal H point of described Battery case and Battery case, there is an insulation resistance Ri1, between the negative pole L point of described Battery case and Battery case, there is an insulation resistance Ri2, on described insulation resistance Ri1, be parallel with the series circuit of switch relay K1 and resistance R 1, on described insulation resistance Ri2, be parallel with the series circuit of switch relay K2 and resistance R 2 and resistance R 3, described switch relay K1 is connected with the microprocessor of its on off state of control with K2, between described resistance R 2 and resistance R 3, junction is connected with the input end of operational amplifier, the output terminal of described operational amplifier is connected with the input end of high precision high impedance analog to digital converter, the output terminal of described high precision high impedance analog to digital converter calculates the size of insulation resistance and judges that the whether normal microprocessor of size of insulation resistance connects from the magnitude of voltage under the basis different on off states that collect, described microprocessor with receive its transmission insulation resistance normal in size signal or undesired signal and when receiving undesired signal, inform that car owner's car load primary controller is connected, on described microprocessor, be also connected with the warning device when the undesired alarm warning of insulation resistance size.
Described microprocessor and high precision high impedance analog to digital converter are by IIC module communication.
Between described microprocessor and car load primary controller, pass through CAN module communication.
Technical conceive of the present utility model is that H point and L point are respectively positive pole and the negative pole of Battery case.Suppose that the insulation resistance between H point and L point and Battery case is respectively Ri1 and Ri2.K1 and K2 are two switch relays.K1 is in parallel with Ri1 again after connecting with R1, K2 and R2 and R3 series connection and in parallel with Ri2 again.Between two groups of parallel connections, connect a line to any point on Battery case.With the common I/O mouth gauge tap relay K 1 of microprocessor and the on off state of K2.Between R2 and R3, with operational amplifier and high precision high impedance analog to digital converter, this point voltage value is changed, microprocessor is communicated by letter with high precision high impedance analog to digital converter by IIC, and the magnitude of voltage under the different on off states that collect is processed, calculate the size of insulation resistance and judge that whether the size of insulation resistance is normal, by CAN module, to car load master controller, send again the normal in size whether information of insulation resistance, when the undesired alarm device of insulation resistance size is reported to the police.
The utility model carries out analog to digital conversion according to different on off states to the voltage Vo after dividing potential drop between R2 and R3.With reference to Fig. 2, its course of work is as follows: first closed K2, open K1, now R2 and R3 series connection also connected and accessed on the both positive and negative polarity of Battery case with Ri1 again with Ri2 parallel connection, through operational amplifier, the analogue value is input on high precision high impedance analog to digital converter, measure the now size of Vo, by IIC, communicate by letter, microprocessor reads analog to digital conversion value and is designated as Vo1.The state that changes K1 is closed, and K2 remains unchanged.Now Ri1 is in parallel with R1, Ri2 and R2, and the resistance of R3 series connection is in parallel again.The resistance of two groups of parallel connections has accessed on the both positive and negative polarity of Battery case, passes through equally operational amplifier and analog to digital conversion, measures the now size of Vo, and microprocessor reads this value and is designated as Vo2.Microprocessor carries out data processing to the value under two kinds of different on off states above, calculates the size of insulation resistance Ri1 and Ri2, finally judges that whether the size of this resistance is normal.If normally, send insulation good signal to car load master controller; If undesired, send undesired signal to car load master controller, inform that car owner should suspend this Battery case of use, and report to the police by warning device.
Claims (3)
1. an electric automobile battery box insulating monitoring warning system, comprise Battery case, between the anodal H point of described Battery case and Battery case, there is an insulation resistance Ri1, between the negative pole L point of described Battery case and Battery case, there is an insulation resistance Ri2, it is characterized in that: the series circuit that is parallel with switch relay K1 and resistance R 1 on described insulation resistance Ri1, on described insulation resistance Ri2, be parallel with the series circuit of switch relay K2 and resistance R 2 and resistance R 3, described switch relay K1 is connected with the microprocessor of its on off state of control with K2, between described resistance R 2 and resistance R 3, junction is connected with the input end of operational amplifier, the output terminal of described operational amplifier is connected with the input end of high precision high impedance analog to digital converter, the output terminal of described high precision high impedance analog to digital converter calculates the size of insulation resistance and judges that the whether normal microprocessor of size of insulation resistance connects from the magnitude of voltage under the basis different on off states that collect, described microprocessor with receive its transmission insulation resistance normal in size signal or undesired signal and when receiving undesired signal, inform that car owner's car load primary controller is connected, on described microprocessor, be also connected with the warning device when the undesired alarm warning of insulation resistance size.
2. a kind of electric automobile battery box insulating monitoring warning system according to claim 1, is characterized in that: described microprocessor and high precision high impedance analog to digital converter are by IIC module communication.
3. a kind of electric automobile battery box insulating monitoring warning system according to claim 1 and 2, is characterized in that: between described microprocessor and car load primary controller, pass through CAN module communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431128.4U CN203422422U (en) | 2013-07-17 | 2013-07-17 | Electric vehicle battery box insulation monitoring alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431128.4U CN203422422U (en) | 2013-07-17 | 2013-07-17 | Electric vehicle battery box insulation monitoring alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422422U true CN203422422U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320431128.4U Expired - Lifetime CN203422422U (en) | 2013-07-17 | 2013-07-17 | Electric vehicle battery box insulation monitoring alarm system |
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| CN (1) | CN203422422U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016006643A1 (en) | 2016-06-02 | 2017-02-09 | Daimler Ag | Isolation judge for an electric energy storage having electrical system of a motor vehicle |
| CN108427057A (en) * | 2018-03-27 | 2018-08-21 | 深圳市国新动力科技有限公司 | A kind of double source method insulation leakagel volume leakage detection circuit and its insulation leakagel volume leakage detection method |
| CN110456157A (en) * | 2019-09-02 | 2019-11-15 | 西安特锐德智能充电科技有限公司 | A kind of insulation impedance detection method and device |
-
2013
- 2013-07-17 CN CN201320431128.4U patent/CN203422422U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016006643A1 (en) | 2016-06-02 | 2017-02-09 | Daimler Ag | Isolation judge for an electric energy storage having electrical system of a motor vehicle |
| CN108427057A (en) * | 2018-03-27 | 2018-08-21 | 深圳市国新动力科技有限公司 | A kind of double source method insulation leakagel volume leakage detection circuit and its insulation leakagel volume leakage detection method |
| CN110456157A (en) * | 2019-09-02 | 2019-11-15 | 西安特锐德智能充电科技有限公司 | A kind of insulation impedance detection method and device |
| CN110456157B (en) * | 2019-09-02 | 2021-12-07 | 西安特锐德智能充电科技有限公司 | Insulation impedance detection method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Zhejiang science and technology industrial building 80 No. 310012 Zhejiang city of Hangzhou province Xihu District GUCUI Road Room 801 Patentee after: HANGZHOU XIENENG TECHNOLOGY Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310012 GUCUI Road No. 80, Zhejiang science and Technology Industrial Building 8 layer Patentee before: HANGZHOU XIENENG TECHNOLOGY CO.,LTD. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |