CN202210120U - Battery voltage acquisition circuit for electric automobiles - Google Patents
Battery voltage acquisition circuit for electric automobiles Download PDFInfo
- Publication number
- CN202210120U CN202210120U CN2011203628230U CN201120362823U CN202210120U CN 202210120 U CN202210120 U CN 202210120U CN 2011203628230 U CN2011203628230 U CN 2011203628230U CN 201120362823 U CN201120362823 U CN 201120362823U CN 202210120 U CN202210120 U CN 202210120U
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- battery
- voltage
- voltage acquisition
- terminals
- collection terminal
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Abstract
A battery voltage acquisition circuit for electric automobiles includes a cathode collection terminal connected to all cathode terminals of a battery pack through conducting wires and an anode collection terminal connected to all the anode terminals of the battery pack, wherein the two collection terminals are connected with a cell management system of an electric automobile through an AD chip; the cathode collection terminal is a metal joint with a round hole; the round hole is stably sleeved on the cathodes of the battery pack; and a double-layered Teflon layer is arranged on the surface of each conducting wire. The voltage acquisition circuit is specially designed for electric automobiles, voltage acquisition terminals are arranged at all the cathodes of the battery pack, voltage measurement is performed through the special AD chip, and the floating ground voltage detection circuit manner is adopted, so that the common ground problem is effectively solved, accumulative error is avoided, drift error at different temperatures can be revised, as a result, the voltage detection precision reaches 0.5%, time for detecting each single battery is less than 100ms, and the battery voltage acquisition circuit has the characteristics of high data detection precision, short time, convenience for installation and maintenance, and the like.
Description
Technical field
The utility model relates to batteries of electric automobile case voltage acquisition improvement technology.
Background technology
The collection of batteries of electric automobile voltage is the key of accurately controlling battery charging and discharging, improving battery performance.Existing cell voltage Acquisition Circuit is big for the Acquisition Error of voltage; Precision is low; And because splicing ear is connected instability with battery set electrode; Inversion comes off easily, loses voltage data, makes the battery management system of electric automobile can't obtain accurate data and can not control battery operated effectively.
The utility model content
In view of this, the utility model technical matters that will solve provides that a kind of error is little, the batteries of electric automobile voltage collection circuit of working stability.
The utility model adopts following scheme to realize:
A kind of batteries of electric automobile voltage collection circuit; This circuit comprises through lead and is connected in the negative pole collection terminal of each electric battery negative pole end and is connected in the total positive anodal collection terminal of each electric battery that two collection terminals are connected with cell management system of electric automobile through the AD chip.
Wherein, described negative pole collection terminal is the metal joint with circular hole, and circular hole is stable to be placed on the electric battery negative pole.
Wherein, described conductive line surfaces is provided with double-deck teflon layer.
This voltage collection circuit aims at the electric automobile design, and the voltage acquisition end all is set employing battery pack negative pole and special-purpose AD chip form is carried out voltage measurement, and adopted floating ground voltage testing circuit mode; Solved the problem on common ground effectively; Avoid accumulated error, simultaneously the drift error under the different temperatures has been revised, made the precision of voltage detecting reach 0.5%; Detect each cell time＜100ms, characteristics such as the Data Detection precision is high, the time is short, convenient for installation and maintenance.
Description of drawings
Fig. 1 is the utility model embodiment circuit diagram;
Fig. 2 is a present embodiment negative pole collection terminal structural representation.
Embodiment
Below will combine accompanying drawing and embodiment that the utility model is described in further detail for the ease of it will be appreciated by those skilled in the art that:
The batteries of electric automobile voltage collection circuit that the utility model embodiment discloses is used to gather each battery voltage of electric automobile, with the battery management system of data transmission to the electric automobile of gathering.
Like accompanying drawing 1, shown in 2.In the present embodiment, this circuit comprises being connected in the negative pole collection terminal 2 of each electric battery 1 negative pole end and being connected in total positive anodal collection terminal 3, two collection terminals of each electric battery through lead and is connected with cell management system of electric automobile through AD chip 4; Form floating ground voltage testing circuit form thus; The AC ripple of electrical network influenced when this form took into full account charging, had solved the problem on common ground effectively, had avoided cumulative errors; Drift error under 4 pairs of different temperatures of AD chip is revised simultaneously; Make the precision of voltage detecting reach 0.5%, detect each electric battery time＜100ms, the Data Detection precision is high, the time is short.
In order to guarantee that negative pole collection terminal 2 and electric battery negative pole are connected firmly, this negative pole collection terminal 2 is for having the metal joint of circular hole 21, circular hole 21 stable being placed on the electric battery negative pole.
In order to improve wear-resisting, the corrosion-resistant and resistance to elevated temperatures of lead, this conductive line surfaces is provided with double-deck teflon layer.
More than be a wherein concrete implementation of the utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these conspicuous replacement forms all belong to the protection domain of the utility model.
Claims (3)
1. batteries of electric automobile piezoelectric voltage Acquisition Circuit; It is characterized in that; This circuit comprises through lead and is connected in the negative pole collection terminal (2) of each electric battery (1) negative pole end and is connected in the total positive anodal collection terminal (3) of each electric battery that two collection terminals are connected with cell management system of electric automobile through AD chip (4).
2. batteries of electric automobile voltage collection circuit according to claim 1 is characterized in that, described negative pole collection terminal is for having the metal joint of circular hole (21), and circular hole is stable to be placed on the electric battery negative pole.
3. batteries of electric automobile voltage collection circuit according to claim 2 is characterized in that described conductive line surfaces is provided with double-deck teflon layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203628230U CN202210120U (en) | 2011-09-26 | 2011-09-26 | Battery voltage acquisition circuit for electric automobiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203628230U CN202210120U (en) | 2011-09-26 | 2011-09-26 | Battery voltage acquisition circuit for electric automobiles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202210120U true CN202210120U (en) | 2012-05-02 |
Family
ID=45989664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203628230U Expired - Fee Related CN202210120U (en) | 2011-09-26 | 2011-09-26 | Battery voltage acquisition circuit for electric automobiles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202210120U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884904A (en) * | 2014-03-03 | 2014-06-25 | 深圳市清友能源技术有限公司 | Battery pack voltage detecting device |
-
2011
- 2011-09-26 CN CN2011203628230U patent/CN202210120U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884904A (en) * | 2014-03-03 | 2014-06-25 | 深圳市清友能源技术有限公司 | Battery pack voltage detecting device |
| CN103884904B (en) * | 2014-03-03 | 2016-05-18 | 深圳市清友能源技术有限公司 | Battery voltage checkout gear |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120502 Termination date: 20190926 |