CN204256046U - Power system of electric automobile Insulation monitoring control device - Google Patents
Power system of electric automobile Insulation monitoring control device Download PDFInfo
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- CN204256046U CN204256046U CN201420675034.6U CN201420675034U CN204256046U CN 204256046 U CN204256046 U CN 204256046U CN 201420675034 U CN201420675034 U CN 201420675034U CN 204256046 U CN204256046 U CN 204256046U
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Abstract
The utility model discloses a kind of power system of electric automobile Insulation monitoring control device, comprise: Insulation monitoring controller, the first switch, second switch, positive pole insulation detection device, negative insulation pick-up unit, power accumulator group positive pole connects the first switch signal input end, described first switch control terminal connects Insulation monitoring controller control end, described first switching signal output terminal connects positive pole insulation detection device signal input part, and described positive pole insulation detection device signal output part connects Insulation monitoring controller signals input end; Power accumulator group negative pole connects second switch signal input part, described second switch control end connects Insulation monitoring controller control end, described second switch signal output part connects negative insulation pick-up unit signal input part, and described negative insulation pick-up unit signal output part connects Insulation monitoring controller signals input end.
Description
Technical field
The utility model relates to automation control area, particularly relates to a kind of power system of electric automobile Insulation monitoring control device.
Background technology
On current electric automobile, the voltage of accumulator power system has all exceeded the safe voltage that human body can bear usually, and such as insulation ag(e)ing, paddle, the objective factor such as to drench with rain all can make original insulation resistance decline further, thus in use or maintenance process, Danger Electric shock risk is brought to use, maintenance personal, therefore, develop a kind of vehicle-mounted real-time high-efficiency, the electric automobile power battery system Insulation monitoring control device of low cost just seems necessary.
Utility model content
The utility model is intended at least solve the technical matters existed in prior art, especially innovatively proposes a kind of power system of electric automobile Insulation monitoring control device.
In order to realize above-mentioned purpose of the present utility model, the utility model provides a kind of power system of electric automobile Insulation monitoring control device, its key is, comprising: Insulation monitoring controller, the first switch, second switch, positive pole insulation detection device, negative insulation pick-up unit
Power accumulator group E1 positive pole connects the first switch signal input end, described first switch control terminal connects Insulation monitoring controller control end, described first switching signal output terminal connects positive pole insulation detection device signal input part, and described positive pole insulation detection device signal output part connects Insulation monitoring controller signals input end;
Power accumulator group E1 negative pole connects second switch signal input part, described second switch control end connects Insulation monitoring controller control end, described second switch signal output part connects negative insulation pick-up unit signal input part, and described negative insulation pick-up unit signal output part connects Insulation monitoring controller signals input end.
Described power system of electric automobile Insulation monitoring control device, preferably, also comprises: the 3rd resistance and the 4th resistance,
Described 3rd resistance one end is connected between power accumulator group E1 positive pole and the first switch signal input end, the described 3rd resistance other end connects electric motor car electricity chassis, described 4th resistance one end is connected between power accumulator group E1 negative pole and second switch signal input part, and the described 4th resistance other end connects electric motor car electricity chassis.
Described power system of electric automobile Insulation monitoring control device, preferably, described positive pole insulation detection device comprises: the first resistance, the second resistance, the first field effect transistor, the second field effect transistor, the first insulation resistance Ro1,
First resistance one end connects the first switch link, the described first resistance other end connects second resistance one end and Insulation monitoring controller signals input end respectively, the described second resistance other end connects the first field effect transistor drain electrode, described first fet gate connects Insulation monitoring controller control end, described first field effect transistor source electrode connects the second field effect transistor source electrode and electric motor car electricity chassis respectively, described second fet gate connects Insulation monitoring controller control end, described second field effect transistor drain electrode connection first insulation resistance Ro1 one end, the described first insulation resistance Ro1 other end connects the first switching signal output terminal.
Described power system of electric automobile Insulation monitoring control device, preferably, described negative insulation pick-up unit comprises: the 5th resistance, the 6th resistance, the 3rd field effect transistor, the 4th field effect transistor, the second insulation resistance Ro2,
3rd field effect transistor source electrode connects second switch signal output part, described 3rd field effect transistor drain electrode connection second insulation resistance Ro2 one end, the described second insulation resistance Ro2 other end connects electric motor car electricity chassis, described second switch signal output part also connects the 4th field effect transistor source electrode, described 4th field effect transistor drain electrode connection the 6th resistance one end, the described 6th resistance other end connects the 5th resistance one end and Insulation monitoring controller signals input end respectively, the described 5th resistance other end also connects the second insulation resistance Ro2, described 4th fet gate connects Insulation monitoring controller signals input end.
Described power system of electric automobile Insulation monitoring control device, preferably, also comprises: battery manager BMS and display device,
Described battery manager BMS signal input part is connected with Insulation monitoring controller signals output terminal by CAN, and described battery manager BMS signal output part connects display device, and described display device is for showing Insulation monitoring data and carrying out alarm indication.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
What this device adopted is precision resistance examination survey method, simpler than employing external voltage method of testing circuit, and cost declines; When needing to adopt special isolation testing tool to keep in repair or detect the insulation resistance of vehicle, can be in off-state by first, second switch of PC control, also can be that hand switch controls by first, second switch-linear hybrid.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the utility model power system of electric automobile Insulation monitoring control device circuit theory connection layout;
Fig. 2 is the utility model power system of electric automobile Insulation monitoring control device the 1st pacing examination battery anode voltage equivalent circuit diagram;
Fig. 3 is the utility model power system of electric automobile Insulation monitoring control device the 2nd pacing examination battery electrode voltage equivalent circuit diagram;
Fig. 4 is the utility model power system of electric automobile Insulation monitoring control device the 3rd pacing examination battery anode voltage equivalent circuit diagram;
Fig. 5 is the utility model power system of electric automobile Insulation monitoring control device the 4th pacing examination battery electrode voltage equivalent circuit diagram.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The purpose of this utility model is to provide a kind of electric automobile power battery system Insulation monitoring control device, this device travels and detects in real time in charging the positive pole of electrokinetic cell system E1, negative pole respectively to the insulation resistance of electric chassis-body at vehicle, 500 Ω/V when the secondary insulation resistance value that the insulating resistance value < recorded allows, first this device passes to battery manager BMS by CAN secondary insulation Resistance Fault, battery manager BMS controls Displaying Meter and carries out the warning of secondary insulation resistance optical flare, prompting vehicle driver; 100 Ω/V when the one-level insulating resistance value that the insulating resistance value < recorded allows, this device by CAN one-level insulation resistance fault delivery to battery manager BMS, while battery manager BMS control Displaying Meter carries out the warning of one-level insulation resistance optical flare, disconnected by the battery manager BMS control positive and negative electrode of electrokinetic cell system and the power motor of vehicle, to ensure the insulation safety of personnel and vehicle again.
In FIG, first switch, second switch is relay, described first switch, second switch effect adopts other special isolation testing tool to keep in repair or detect vehicle insulation system and arrange to solve, first switch at ordinary times, second switch is normally closed on-state, E1 is power accumulator group, Q1, Q2, Q3, Q4 is N-type field effect transistor, resistance R1+R2=resistance R5+R6 >=10M Ω, R2=R5=1%R1, R1=R6, resistance R1, R2, R5, R6 is the precision resistance of known value, Ro1=Ro2 calculates by the nominal voltage of power accumulator according to the precision resistance of the known value of 500 Ω/V configurations, during nominal voltage=320V as power accumulator, Ro1=500 × 320=160K Ω.Resistance R3 and R4 is respectively power accumulator group positive and negative electrode to the insulation resistance on electric chassis, be generally finite resistive value, and the two is general also unequal, in R3 or R4, any one exceedes permissible value, be system insulation and exceed permissible value, a namely little resistance value is the insulating resistance value of system, and system carries out reporting to the police and controlling by setup program.
The utility model provides a kind of power system of electric automobile Insulation monitoring control device, and its key is, comprising: Insulation monitoring controller, the first switch, second switch, positive pole insulation detection device, negative insulation pick-up unit,
Power accumulator group E1 positive pole connects the first switch signal input end, described first switch control terminal connects Insulation monitoring controller control end, described first switching signal output terminal connects positive pole insulation detection device signal input part, and described positive pole insulation detection device signal output part connects Insulation monitoring controller signals input end;
Power accumulator group E1 negative pole connects second switch signal input part, described second switch control end connects Insulation monitoring controller control end, described second switch signal output part connects negative insulation pick-up unit signal input part, and described negative insulation pick-up unit signal output part connects Insulation monitoring controller signals input end.
Described power system of electric automobile Insulation monitoring control device, preferably, also comprises: the 3rd resistance and the 4th resistance,
Described 3rd resistance one end is connected between power accumulator group E1 positive pole and the first switch signal input end, the described 3rd resistance other end connects electric motor car electricity chassis, described 4th resistance one end is connected between power accumulator group E1 negative pole and second switch signal input part, and the described 4th resistance other end connects electric motor car electricity chassis.
Described power system of electric automobile Insulation monitoring control device, preferably, described positive pole insulation detection device comprises: the first resistance, the second resistance, the first field effect transistor, the second field effect transistor, the first insulation resistance Ro1,
First resistance one end connects the first switch link, the described first resistance other end connects second resistance one end and Insulation monitoring controller signals input end respectively, the described second resistance other end connects the first field effect transistor drain electrode, described first fet gate connects Insulation monitoring controller control end, described first field effect transistor source electrode connects the second field effect transistor source electrode and electric motor car electricity chassis respectively, described second fet gate connects Insulation monitoring controller control end, described second field effect transistor drain electrode connection first insulation resistance Ro1 one end, the described first insulation resistance Ro1 other end connects the first switching signal output terminal.
Described power system of electric automobile Insulation monitoring control device, preferably, described negative insulation pick-up unit comprises: the 5th resistance, the 6th resistance, the 3rd field effect transistor, the 4th field effect transistor, the second insulation resistance Ro2,
3rd field effect transistor source electrode connects second switch signal output part, described 3rd field effect transistor drain electrode connection second insulation resistance Ro2 one end, the described second insulation resistance Ro2 other end connects electric motor car electricity chassis, described second switch signal output part also connects the 4th field effect transistor source electrode, described 4th field effect transistor drain electrode connection the 6th resistance one end, the described 6th resistance other end connects the 5th resistance one end and Insulation monitoring controller signals input end respectively, the described 5th resistance other end also connects the second insulation resistance Ro2, described 4th fet gate connects Insulation monitoring controller signals input end.
Described power system of electric automobile Insulation monitoring control device, preferably, also comprises: battery manager BMS and display device,
Described battery manager BMS signal input part is connected with Insulation monitoring controller signals output terminal by CAN, and described battery manager BMS signal output part connects display device, and described display device is for showing Insulation monitoring data and carrying out alarm indication.
Described Insulation monitoring controller uses 89C51 and A/D converter and peripheral circuit to realize, or uses battery management system (BMS).Wherein control section is the normally used known technologies of those skilled in the art.As in Fig. 2,3,4,5 being the equivalent electrical circuit that hand adjustment or Insulation monitoring controller carry out regulating.
What adopt due to this device is precision resistance examination survey method, simpler than employing external voltage method of testing circuit, cost decline; When needing to adopt special isolation testing tool to keep in repair or detect the insulation resistance of vehicle, can be in off-state by first, second switch of PC control, also can be that hand switch controls by first, second switch-linear hybrid.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (5)
1. a power system of electric automobile Insulation monitoring control device, is characterized in that, comprising: Insulation monitoring controller, the first switch, second switch, positive pole insulation detection device, negative insulation pick-up unit,
Power accumulator group (E1) positive pole connects the first switch signal input end, described first switch control terminal connects Insulation monitoring controller control end, described first switching signal output terminal connects positive pole insulation detection device signal input part, and described positive pole insulation detection device signal output part connects Insulation monitoring controller signals input end;
Power accumulator group (E1) negative pole connects second switch signal input part, described second switch control end connects Insulation monitoring controller control end, described second switch signal output part connects negative insulation pick-up unit signal input part, and described negative insulation pick-up unit signal output part connects Insulation monitoring controller signals input end.
2. power system of electric automobile Insulation monitoring control device according to claim 1, is characterized in that, also comprise: the 3rd resistance and the 4th resistance,
Described 3rd resistance one end is connected between power accumulator group (E1) positive pole and the first switch signal input end, the described 3rd resistance other end connects electric motor car electricity chassis, described 4th resistance one end is connected between power accumulator group (E1) negative pole and second switch signal input part, and the described 4th resistance other end connects electric motor car electricity chassis.
3. power system of electric automobile Insulation monitoring control device according to claim 1, it is characterized in that, described positive pole insulation detection device comprises: the first resistance, the second resistance, the first field effect transistor, the second field effect transistor, the first insulation resistance (Ro1)
First resistance one end connects the first switch link, the described first resistance other end connects second resistance one end and Insulation monitoring controller signals input end respectively, the described second resistance other end connects the first field effect transistor drain electrode, described first fet gate connects Insulation monitoring controller control end, described first field effect transistor source electrode connects the second field effect transistor source electrode and electric motor car electricity chassis respectively, described second fet gate connects Insulation monitoring controller control end, described second field effect transistor drain electrode connection first insulation resistance (Ro1) one end, described first insulation resistance (Ro1) other end connects the first switching signal output terminal.
4. power system of electric automobile Insulation monitoring control device according to claim 1, it is characterized in that, described negative insulation pick-up unit comprises: the 5th resistance, the 6th resistance, the 3rd field effect transistor, the 4th field effect transistor, the second insulation resistance (Ro2)
3rd field effect transistor source electrode connects second switch signal output part, described 3rd field effect transistor drain electrode connection second insulation resistance (Ro2) one end, described second insulation resistance (Ro2) other end connects electric motor car electricity chassis, described second switch signal output part also connects the 4th field effect transistor source electrode, described 4th field effect transistor drain electrode connection the 6th resistance one end, the described 6th resistance other end connects the 5th resistance one end and Insulation monitoring controller signals input end respectively, the described 5th resistance other end also connects the second insulation resistance (Ro2), described 4th fet gate connects Insulation monitoring controller signals input end.
5. power system of electric automobile Insulation monitoring control device according to claim 1, is characterized in that, also comprise: battery manager and display device,
Described battery manager signal input part is connected with Insulation monitoring controller signals output terminal by CAN, and described battery manager signal output part connects display device, and described display device is for showing Insulation monitoring data and carrying out alarm indication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420675034.6U CN204256046U (en) | 2014-11-13 | 2014-11-13 | Power system of electric automobile Insulation monitoring control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420675034.6U CN204256046U (en) | 2014-11-13 | 2014-11-13 | Power system of electric automobile Insulation monitoring control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502712A (en) * | 2014-11-13 | 2015-04-08 | 重庆小康工业集团股份有限公司 | Insulation detection control device and control method for electric automobile power system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502712A (en) * | 2014-11-13 | 2015-04-08 | 重庆小康工业集团股份有限公司 | Insulation detection control device and control method for electric automobile power system |
| CN104502712B (en) * | 2014-11-13 | 2017-10-24 | 重庆小康工业集团股份有限公司 | A kind of power system of electric automobile Insulation monitoring control device and control method |
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Granted publication date: 20150408 Termination date: 20211113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |