CN201927443U - Sampling resistor in car battery sensor - Google Patents
Sampling resistor in car battery sensor Download PDFInfo
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- CN201927443U CN201927443U CN2010206695711U CN201020669571U CN201927443U CN 201927443 U CN201927443 U CN 201927443U CN 2010206695711 U CN2010206695711 U CN 2010206695711U CN 201020669571 U CN201020669571 U CN 201020669571U CN 201927443 U CN201927443 U CN 201927443U
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- sampling resistor
- resistor
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- battery sensor
- resistance
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Abstract
The utility model relates to the technical field of automobile sensors, in particular to a sampling resistor in a car battery sensor. The sampling resistor comprises a resistor and electrodes arranged at two ends of the resistor, wherein the resistor is a manganin resistor; the electrodes are oxygen-free copper electrodes; and further, the resistor and the electrodes are welded through high-energy electron beams. The sampling resistor of the car battery sensor, which is provided by the utility model, has the advantages of high precision, low temperature drift and low thermoelectromotive force, is used for realizing current sampling of control loops, and enables a miniature and integrated battery sensor to be applicable to a car.
Description
Technical field
The utility model relates to the automotive sensor technology field, is specifically related to the sampling resistor in a kind of automobile batteries transducer.
Background technology
Energy-conservation is the inevitable choice of building a resource-conserving and environment-friendly society with reducing discharging; Be the inevitable requirement of safeguarding Chinese nation's long-term interest, hybrid vehicle is the product that meets this energy-saving and emission-reduction policy, and one of core technology of hybrid vehicle is a power management techniques.In the power-supply management system of hybrid vehicle, battery sensor is important component parts.The Hall-type current sensor detects electric current to present battery sensor, temperature sensor comes the mode of detected temperatures to realize by adopting independently.And the Hall-type current sensor by Hall chip by the induction coiling or pass that the changes of magnetic field that primary current produced of magnetism gathering rings on the transducer realizes, its accuracy of detection is influenced by former limit conductor structure and cooperation thereof, simultaneously, because sensor output signal is voltage, the current signal of the little linearity of dynamic range, in the weather (as temperature, humidity, dust) and abominable electromagnetic environment of complexity, very easily be subjected to external interference; And temperature sensor needs independently to be arranged on the storage battery, still has the little defective of output signal dynamic range, is subject to the influence of complicated climatic environment and abominable electromagnetic environment.Influence battery current, voltage, temperature monitoring and electric weight assessment.
In sum, the battery sensor that is made of independently Hall-type current sensor and temperature sensor exists following defective in vehicle power management system is used:
1. because Hall-type current sensor and temperature sensor independence arrangement cause the car load wire harness to increase and difficult arrangement;
2. linear signal transmission dynamic range is little, is subject to the influence of weather or electromagnetic environment, causes the signal sampling precision to reduce;
3. in the wide dynamic detection range of 1mA to 1000A, can not carry out mA level small-signal current and detect.
4. electric current, voltage and temperature signal need carry out independent device and handle.
Therefore, the micro-ohm level sampling resistor that needs a kind of high accuracy, low temperature drift, low thermo-electromotive force is realized the current sample of control loop, and miniaturization, integrated battery sensor are applied in becomes possibility on the automobile.
The utility model content
In view of this, in order to address the above problem, the utility model provides the sampling resistor in the automobile batteries transducer of a kind of high accuracy, low temperature drift, low thermo-electromotive force.
The purpose of this utility model is achieved in that the sampling resistor in the automobile batteries transducer, comprises resistance and the electrode that is arranged at the resistance two ends, and described resistance is manganin manganin alloy resistance.
Further, described electrode is the oxygen-free copper electrode.
Further, described resistance and electrode weld by high-power electron beam.
Further, the described electrode pilot hole that is provided with sampling resistor reference electrode post, measurement electrode post and is used to assemble electric fastening bolt.
The beneficial effects of the utility model are: the sampling resistor in the automobile batteries transducer of the present utility model, advantage with high accuracy, low temperature drift, low thermo-electromotive force, be used to realize the current sample of control loop, miniaturization, integrated battery sensor are applied in becomes possibility on the automobile.
Description of drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 shows the structural representation of the sampling resistor in the automobile batteries transducer;
Fig. 2 shows the vertical view of Fig. 1.
Embodiment
Referring to Fig. 1,2, sampling resistor in the automobile batteries transducer of present embodiment, comprise resistance 1 and the electrode 2 that is arranged at resistance 1 two ends, described resistance 1 is manganin manganin alloy resistance, described electrode 2 is the oxygen-free copper electrode, described resistance 1 welds by high-power electron beam with electrode 2, and the pilot hole 4 that described electrode 1 is provided with electrode column 3 and is used to assemble electric fastening bolt, described electrode column comprise sampling resistor reference electrode post and measurement electrode post.
When sampling resistor designs, there is the dissipation power consumption in resistance when considering big electric current, can the temperature acquisition of transducer arrangements point be impacted, through calculating and analogue simulation, parameter setting is at resistance value 150 μ Ω, and rated power is designed to 20W, sense value＜3nH, solder joint thermo-electromotive force＜2 μ V, resistive element material temperature coefficient be ± the MANGANIN(manganese ambrose alloy of 15ppm/ ℃) and material, electrode selects the oxygen-free copper of high conductivity.
The sampling resistor of present embodiment, when operating current was 10mA, its sampled signal amplitude was about 15 μ V, and operating current is when 1000A, its sampled signal amplitude is about 150mV.
The above is only for the utility model that preferably is not limited to of the present utility model, and obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (4)
1. the sampling resistor in the automobile batteries transducer is characterized in that: comprise resistance and be arranged at the electrode at resistance two ends, described resistance is manganin manganin alloy resistance.
2. the sampling resistor in the automobile batteries transducer as claimed in claim 1 is characterized in that: described electrode is the oxygen-free copper electrode.
3. the sampling resistor in the automobile batteries transducer as claimed in claim 1 is characterized in that: described resistance and electrode weld by high-power electron beam.
4. as the sampling resistor in each described automobile batteries transducer in the claim 1 to 3, it is characterized in that: the pilot hole that described electrode is provided with sampling resistor reference electrode post, measurement electrode post and is used to assemble electric fastening bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206695711U CN201927443U (en) | 2010-12-20 | 2010-12-20 | Sampling resistor in car battery sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206695711U CN201927443U (en) | 2010-12-20 | 2010-12-20 | Sampling resistor in car battery sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927443U true CN201927443U (en) | 2011-08-10 |
Family
ID=44431280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206695711U Expired - Fee Related CN201927443U (en) | 2010-12-20 | 2010-12-20 | Sampling resistor in car battery sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201927443U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107710349A (en) * | 2015-06-15 | 2018-02-16 | Koa株式会社 | Resistor and its manufacture method |
| CN112805578A (en) * | 2018-10-12 | 2021-05-14 | 大陆汽车有限责任公司 | Battery sensor |
| DE102021210583A1 (en) | 2021-09-23 | 2023-03-23 | Continental Automotive Technologies GmbH | Resistive element for a battery sensor, battery sensor and method of manufacturing a resistive element |
-
2010
- 2010-12-20 CN CN2010206695711U patent/CN201927443U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107710349A (en) * | 2015-06-15 | 2018-02-16 | Koa株式会社 | Resistor and its manufacture method |
| CN107710349B (en) * | 2015-06-15 | 2019-05-03 | Koa株式会社 | Resistor and its manufacturing method |
| CN112805578A (en) * | 2018-10-12 | 2021-05-14 | 大陆汽车有限责任公司 | Battery sensor |
| DE102021210583A1 (en) | 2021-09-23 | 2023-03-23 | Continental Automotive Technologies GmbH | Resistive element for a battery sensor, battery sensor and method of manufacturing a resistive element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20131220 |