CN206515387U - Current sensing means and current detecting system - Google Patents
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Abstract
The utility model provides a kind of current sensing means and current detecting system, and the current sensing means includes current signal port, the first sensing device and the second sensing device, wherein：The first sensing device detection flows through the electric current of the current signal port and obtains the first current detection signal；The second sensing device detection flows through the electric current of the first sensing device and obtains the second current detection signal, first sensing device is high-precision shunt resistance, second sensing device is Hall current sensor or fluxgate sensing device, and the controller in current detecting system, which handles first current detection signal and the second current detection signal progress, to be obtained finally detecting signal.The utility model gathers sensor using high-precision shunt resistance as principal current, sampling precision can reach 0.5%, the requirement of battery management system is disclosure satisfy that, using Hall sensor as redundant current sampling section, the cost of double high-precision shunt resistance current schemes of AD samplings is reduced.
Description
Technical field
The utility model is related to technical field of automotive electronics, more particularly to a kind of current sensing means and current detecting system
System.
Background technology
Present power battery management system current sensor mainly has two kinds of forms, Hall-type current sensor and height
Precision shunt resistance formula current sensor.Hall-type current sensor is made up of Hall chip and magnetic guiding loop two parts, is directly led
Line passes through magnetic guiding loop, and current in wire produces induced field in magnetic guiding loop, and Hall chip is strong by sensing the magnetic field in magnetic guiding loop
Degree, measures the size of current in wire indirectly.The measurement of Hall sensor is contactless measurement, can measure larger electricity
Flow valuve, sample circuit is simple, without high_voltage isolation and cost is low.The sensitive prime device of high-precision shunt resistance formula current sensor
Part is high-precision shunt resistance, is connected among major loop, by measuring the voltage drop value at high-precision shunt resistance two ends, is fetched
The electric current of the excessively high-precision shunt resistance of measurement stream, the metering system precision is high, and cost is high.
Requirement of the present battery management system to current sensor is that trueness error is less than 0.5%, and system needs to meet safely
ASIL C safe class, and have synchronism requirement to current-voltage sampling.
Hall-type current sensor is non-contact measurement, and the precision of measurement is low, and temperature drift is big, can not meet current battery pipe
Requirement of the reason system to current precision 0.5%.And current battery management system requires voltage x current synchronized sampling, and such is passed
Sensor does not need sample circuit and isolation circuit in itself, therefore also needs to increase volume to realize in voltage sample simultaneously, system
Outer voltage detecting circuit structure, including sample circuit and isolation circuit etc., being significantly increased for cost is brought therewith.
High-precision shunt resistance formula current sensor is measured using mode measured directly, it is necessary to which sample circuit is carried out
Voltage x current is sampled.The sample mode precision is high, but if to reach ASIL C safe class, then needs to carry out circuit redundancy
Design, it usually needs increase current signal sampling and isolation all the way, thus causes chip cost to increase, product is result in therewith
Cost increase by 50% or so.
Accordingly, it would be desirable to design a kind of inexpensive current sensing means and current detecting system.
Utility model content
The purpose of this utility model is to provide a kind of current sensing means and current detecting system, to solve existing electricity
The problem of current detecting cost of pond management system is high.
In order to solve the above technical problems, the utility model provides a kind of current sensing means, the current sensing means is used
In battery management system, the current sensing means includes current signal port, the first sensing device and the second sensing device, its
In：
The first sensing device detection flows through the electric current of the current signal port and obtains the first current detection signal；
The second sensing device detection flows through the electric current of the first sensing device and obtains the second current detection signal.
Optionally, in described current sensing means, first sensing device is shunt resistance, second sensing
Device is Hall current sensor.
Optionally, in described current sensing means, the Hall current sensor includes magnetic guiding loop and Hall chip,
The magnetic guiding loop is enclosed on the outside of the shunt resistance and induces a magnetic field intensity by the electric current for flowing through the first sensing device, described
Hall chip detects that the magnetic field intensity in the magnetic guiding loop obtains the second current detection signal.
Optionally, in described current sensing means, first sensing device is shunt resistance, second sensing
Device is fluxgate sensor device.
Optionally, in described current sensing means, the fluxgate sensor device includes magnetic guiding loop and detection electricity
Road, the magnetic guiding loop is enclosed on the outside of the shunt resistance and induces a magnetic field intensity by the electric current for flowing through the first sensing device,
Magnetic field intensity described in the detection electric circuit inspection in magnetic guiding loop obtains the second current detection signal.
Optionally, in described current sensing means, the current sensing means also includes magnetic conduction ring support, described to lead
The magnetic guiding loop is fixed on the shunt resistance by magnet ring support.
Optionally, in described current sensing means, first sensing device is Hall current sensor, described the
Two sensing devices are shunt resistance.
Optionally, in described current sensing means, first sensing device is fluxgate sensor device, described
Second sensing device is shunt resistance.
The utility model also provides a kind of current detecting system, and the current detecting system includes current sensing means, control
Device and signal processor processed, wherein：
The current sensing means connects the signal processor, and first current detection signal is sent at signal
Device is managed, the signal processor is AD converted and signal isolation to first current detection signal；
The current sensing means connects the controller, second current detection signal is sent into controller, institute
State controller and receive second current detection signal；
The signal processor connects the controller, and first current detection signal is sent into controller, described
Controller receives first current detection signal；
The controller is received after the first current detection signal and the second current detection signal, and the first current detecting is believed
Number and the second current detection signal be compared, if the difference of the first current detection signal and the second current detection signal is in threshold value
In the range of, then it regard the first current detection signal as final detection signal.
Optionally, in described current detecting system, the current sensing means includes current signal port, the first biography
Induction device and the second sensing device, wherein：
The first sensing device detection flows through the electric current of the current signal port and obtains the first current detection signal；
The second sensing device detection flows through the electric current of the first sensing device and obtains the second current detection signal.
Optionally, in described current detecting system, the controller is comparison circuit.
Optionally, in described current detecting system, the signal processor is AD conversion chip and isolating chip.
Optionally, in described current detecting system, the current detecting system also includes divider resistance, the partial pressure
Resistance connects the signal processor, and the voltage signal is simultaneously sent to the signal by the divider resistance detectable voltage signals
Processor.
Optionally, in described current detecting system, the current detecting system also includes thermistor apparatus, described
Thermistor apparatus carries out temperature-compensating to first current detection signal and second current detection signal.
In the current sensing means that the utility model is provided, the electric current is flowed through by first sensing device detection
The electric current of signal port simultaneously obtains the first current detection signal, and the electricity of the first sensing device is flowed through in the second sensing device detection
Flow and obtain the second current detection signal, the second sensing device is directly obtained second on the basis of the first current detection signal
Current detection signal, the electric current on detection wire used different from traditional type noncontacting proximity sensor, the utility model makes the
Two sensing devices are directly nested on the first sensing device, are integrated in together by using the first sensing device and the second sensing device
In one structure, make sensing device overall structure small, integrated level is high, sturdy and durable, reliability is high, and circuit connection is clear understandable.
In the current detecting system that the utility model is provided, the first current detecting sent by current sensing means is believed
Number and the second current detection signal, meet battery management system current sensing means safe class requirement, by described
Controller directly receives second current detection signal, without signal processors such as the A/D converter circuits of redundancy.
Specifically, the utility model gathers sensor using high-precision shunt resistance as principal current, sampling precision can reach
To 0.5%, using Hall sensor as redundant current sampling section, Hall sensor may be coupled directly on controller, subtract
The signal transactings such as A/D converter circuit are lacked, have reduced the cost of double high-precision shunt resistance current schemes of AD samplings, simplify electricity
Road part, while Hall sensor current sample can be verified to high-precision shunt resistance current sample, can meet electricity
Pond management system safe class ASIL C demand.
Further, in the current sensing means and current detecting system that the utility model is provided, the partial pressure is passed through
Voltage signal is simultaneously sent to the signal processor by voltage signal described in resistance detection, realizes Current Voltage synchronized sampling, and
Extra A/D converter circuit and isolation circuit need not be increased, simple system, cost is low.
Brief description of the drawings
Fig. 1 is the utility model current sensing means structure chart；
Fig. 2 is the utility model current detecting system Organization Chart；
Shown in figure：1- current sensing means；The sensing devices of 11- first；The sensing devices of 12- second；121- magnetic guiding loops；
122- Hall chips；13- upper shells；14- lower houses；15-PCB plates；16- magnetic conduction ring supports；2- controllers；3- signal transactings
Device；31-AD conversion chips；32- isolating chips；4- divider resistances；5- thermistor apparatus；6- communication modules；7- linear voltage stabilizations
Chip；8- reference voltage chips.
Embodiment
Below in conjunction with the drawings and specific embodiments to the utility model proposes current sensing means and current detecting system
It is described in further detail.According to following explanation and claims, advantages and features of the present utility model will become apparent from.Need
Bright, accompanying drawing is using very simplified form and uses non-accurately ratio, only conveniently, lucidly to aid in illustrating
The purpose of the utility model embodiment.
Core concept of the present utility model is to provide a kind of inexpensive current sensing means and current detecting system.
To realize above-mentioned thought, the utility model provides a kind of current sensing means and current detecting system, the electricity
Flow detection device includes current signal port, the first sensing device and the second sensing device, wherein：The first sensing device inspection
The electric current of the excessively described current signal port of flow measurement simultaneously obtains the first current detection signal；Second sensing device detection flows through the
The electric current of one sensing device simultaneously obtains the second current detection signal.
<Embodiment one>
Fig. 1 is the utility model current sensing means structure chart, as shown in figure 1, the present embodiment provides a kind of current detecting
Device 1, the current sensing means 1 is used for battery management system, and the current sensing means 1 includes current signal port, the
One sensing device 11 and the second sensing device 12, wherein：The current signal port is flowed through in the detection of first sensing device 11
Electric current and obtain the first current detection signal；Second sensing device 12 detects the electric current for flowing through the first sensing device and obtained
To the second current detection signal.In order to the safe class ASIL C that meet battery management system requirement and it is high-precision will
Ask, the technical scheme has two-way current acquisition.The sensing element gathered using high-precision shunt resistance as main signal, is used
The sensing element that hall sensor is gathered as redundant signals, both is integrated into new sensor plan.
Specifically, in described current sensing means, first sensing device 11 is shunt resistance, described second passes
Induction device 12 is Hall current sensor.The Hall current sensor includes magnetic guiding loop 121 and Hall chip 122, described to lead
Magnet ring 121 is enclosed on the shunt resistance, i.e. the outside of the first sensing device 11 is simultaneously induced by the electric current for flowing through the first sensing device
One magnetic field intensity, the Hall chip 122 detects that the magnetic field intensity in the magnetic guiding loop 121 obtains the second current detection signal.
Hall sensor is replaced using fluxgate sensor, same function is realized, second sensing device is alternatively fluxgate biography
Sensor arrangement.The fluxgate sensor device includes magnetic guiding loop 121 and detection circuit, and the magnetic guiding loop 121 is enclosed on described point
On the outside of leakage resistance and a magnetic field intensity, magnetic conduction described in the detection electric circuit inspection are induced by the electric current for flowing through the first sensing device
Magnetic field intensity in ring obtains the second current detection signal.The current sensing means also includes magnetic conduction ring support 16, described to lead
The magnetic guiding loop 121 is fixed on the shunt resistance, i.e. the first sensing device 11 by the support of magnet ring 16.
Specifically, high-precision shunt resistance passes through magnetic guiding loop internal diameter, it is located by connecting by magnetic conduction ring support, Hall sensor
The electric current of the excessively high-precision shunt resistance of detection stream, rather than the electric current on detection wire.High-precision shunt resistance is used for accurate inspection
The electric current surveyed in major loop, after temperature-compensating and demarcation, precision can reach 0.5%, can meet battery management system
Required precision, the current value current detecting system of high-precision shunt resistance detection carries out signal transacting, and Hall sensor is examined
The electric current of survey is used for verifying the accuracy of high-precision shunt resistance current acquisition as redundant signals.Sample circuit in the program
Need to gather all the way high-precision shunt resistance current signal with regard to the demand of safe class can be met, i.e., using the samplings of AD all the way and every
From with regard to voltage x current synchronous acquisition requirement can be met, circuit is simplified, the quantity of chip is reduced, reduces cost.
Further, the signal that can be also gathered using the shunt resistance of sampling with high precision carries out school to Hall current sensor
Test, improve the precision of Hall current sensor, realize same function, i.e., described first sensing device is Hall current sensor
Or fluxgate sensor device, second sensing device is shunt resistance.
In the current sensing means that the present embodiment is provided, the electric current is flowed through by first sensing device detection and believed
The electric current of number port simultaneously obtains the first current detection signal, and the electric current of the first sensing device is flowed through in the second sensing device detection
And the second current detection signal is obtained, the second sensing device is directly obtained second on the basis of the electric current of the first sensing device
Current detection signal, the electric current on detection wire used different from traditional type noncontacting proximity sensor, the utility model makes the
Two sensing devices are directly nested on the first sensing device, and same knot is integrated in using the first sensing device and the second sensing device
In structure, make sensing device overall structure small, integrated level is high, sturdy and durable, reliability is high, and circuit connection is clear understandable.
As shown in figure 1, also including in current sensing means 1 for fixed and encapsulation upper shell 13, lower house 14 and holding
Carry the pcb board 15 of other signal processing chips and microprocessor chip.
To sum up, the various configuration of current sensing means is described in detail above-described embodiment, certainly, the utility model
Cited configuration in including but not limited to above-mentioned implementation, it is any to enter line translation on the basis of the configuration that above-described embodiment is provided
Content, belong to the scope that the utility model is protected.Those skilled in the art can lift according to the content of above-described embodiment
One anti-three.
<Embodiment two>
Fig. 2 is the utility model current detecting system Organization Chart, as shown in Fig. 2 the present embodiment also provides a kind of electric current inspection
Examining system, the current detecting system includes current sensing means 1, controller 2 and signal processor 3, wherein：The electric current inspection
Survey device 1 and connect the signal processor 3, first current detection signal is sent to signal processor 3, the signal
Processor is AD converted and signal isolation to first current detection signal；The current sensing means 1 connects the control
Device 2 processed, controller 2 is sent to by second current detection signal, and the controller receives second current detection signal；
The signal processor 1 connects the controller 2, and first current detection signal is sent into controller, the controller
First current detection signal is received, and first current detection signal and second current detection signal are compared
Relatively obtain finally detecting signal, the controller is received after the first current detection signal and the second current detection signal, to
One current detection signal and the second current detection signal are compared, if the first current detection signal and the second current detection signal
Difference in threshold range, then the first current detection signal is used as to final detection signal.
Further, in described current detecting system, the current sensing means 1 includes current signal port, the
One sensing device 11 and the second sensing device 12, wherein：The current signal port is flowed through in the detection of first sensing device 11
Electric current and obtain the first current detection signal；Second sensing device 12 detects the electric current for flowing through the first sensing device and obtained
To the second current detection signal.Second sensing device 12 is Hall current sensor.The Hall current sensor includes
Magnetic guiding loop 121 and Hall chip 122, the magnetic guiding loop 121 are enclosed on the shunt resistance, i.e. the outside of the first sensing device 11 and by
First current detection signal induces a magnetic field intensity, and the Hall chip 122 detects the magnetic field intensity in the magnetic guiding loop 121
Obtain the second current detection signal.
Further, in described current detecting system, second sensing device 12 examines second electric current
Survey signal and be sent to the controller 2, first current detection signal is sent to the letter by first sensing device 11
Number processor 3, after the signal processor 3 is handled first current detection signal, is sent to the controller 2,
First current detection signal and second current detection signal are compared by the controller 2 obtains final detection letter
Number, the controller is comparison circuit, simple analog circuit and operational amplifier can be used to be realized.
In addition, in described current detecting system, the signal processor 3 is AD conversion chip 31 and isolating chip
32.The current detecting system also includes divider resistance 4 and thermistor apparatus 5, and the divider resistance 4 is connected at the signal
Device 3 is managed, the voltage signal is simultaneously sent to the signal processor 3 by the detectable voltage signals of divider resistance 4；In this implementation
In the current detecting system that example is provided, the voltage signal is detected by the divider resistance and is sent to voltage signal described
Signal processor, realizes Current Voltage synchronized sampling, and need not increase extra A/D converter circuit and isolation circuit, system letter
Single, cost is low.5 pairs of thermistor apparatus, first current detection signal and second current detection signal carry out temperature
There is provided the precision of current detection signal and the degree of accuracy for degree compensation.Current detecting system in the present embodiment also includes communication module
6th, linear voltage stabilization chip 7 and reference voltage chip 8, for various other functions in system.
In the current detecting system that the present embodiment is provided, the first current detection signal sent by current sensing means
With the second current detection signal, the safe class requirement of the current sensing means of battery management system is met, passes through the control
Device processed directly receives second current detection signal, without signal processors such as the A/D converter circuits of redundancy.
Specifically, the utility model gathers sensor using high-precision shunt resistance as principal current, sampling precision can reach
To 0.5%, using Hall sensor as redundant current sampling section, Hall sensor may be coupled directly on controller, subtract
The signal transactings such as A/D converter circuit are lacked, have reduced the cost of double high-precision shunt resistance current schemes of AD samplings, simplify electricity
Road part, while Hall sensor current sample can be verified to high-precision shunt resistance current sample, can meet electricity
Pond management system safe class ASIL C demand.
Further, in the current sensing means and current detecting system that the utility model is provided, the partial pressure is passed through
Voltage signal is simultaneously sent to the signal processor by voltage signal described in resistance detection, realizes Current Voltage synchronized sampling, and
Extra A/D converter circuit and isolation circuit need not be increased, simple system, cost is low.
<Embodiment three>
The present embodiment provides a kind of electric current detecting method of current detecting system, the current detecting of the current detecting system
Method includes：The first sensing device detection flows through the electric current of the current signal port and obtains the first current detecting letter
Number, first current detection signal is sent to signal processor by the first sensing device；Signal processor is electric by described first
Stream detection signal carries out signal transacting and is sent to controller；First sensing device is flowed through in the second sensing device detection
Electric current and obtain the second current detection signal, second current detection signal is sent to controller by the second sensing device,
The controller is received after the first current detection signal and the second current detection signal, to the first current detection signal and second
Current detection signal is compared, if the difference of the first current detection signal and the second current detection signal is in threshold range,
Then it regard the first current detection signal as final detection signal.
Specifically, in the electric current detecting method of described current detecting system, the electric current inspection of the current detecting system
Survey method also includes：If the difference of the first current detection signal and the second current detection signal exceedes threshold range, controller
Again the first current detection signal and the second current detection signal are received.
In the electric current detecting method for the current detecting system that the present embodiment is provided, it is used for by first sensing device
Detection flows through the electric current of the current signal port and obtains the first current detection signal, and second sensing device is used to detect
Flow through the electric current of the first sensing device and obtain the second current detection signal, meet the current sensing means of battery management system
Safe class requirement, gather sensor as principal current by using high-precision shunt resistance, sampling precision can reach
0.5%, using Hall sensor as redundant current sampling section, Hall sensor may be coupled directly on controller, reduce
The signal transactings such as A/D converter circuit, reduce the cost of double high-precision shunt resistance current schemes of AD samplings, simplify circuit
Part, while Hall sensor current sample can be verified to high-precision shunt resistance current sample, can meet battery
Management system safe class ASIL C demand.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For system disclosed in embodiment
For, due to corresponding to the method disclosed in Example, so description is fairly simple, related part is referring to method part illustration
.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the utility model scope
Calmly, the those of ordinary skill in the utility model field does according to the disclosure above content any change, modification, belonging to right will
Seek the protection domain of book.
Claims (14)
1. a kind of current sensing means, the current sensing means is used for battery management system, it is characterised in that the electric current inspection
Surveying device includes current signal port, the first sensing device and the second sensing device, wherein：
The first sensing device detection flows through the electric current of the current signal port and obtains the first current detection signal；
The second sensing device detection flows through the electric current of the first sensing device and obtains the second current detection signal.
2. current sensing means as claimed in claim 1, it is characterised in that first sensing device is shunt resistance, institute
The second sensing device is stated for Hall current sensor.
3. current sensing means as claimed in claim 2, it is characterised in that the Hall current sensor include magnetic guiding loop and
Hall chip, the magnetic guiding loop is enclosed on the outside of the shunt resistance and induces a magnetic field by the electric current for flowing through the first sensing device
Intensity, the Hall chip detects that the magnetic field intensity in the magnetic guiding loop obtains the second current detection signal.
4. current sensing means as claimed in claim 1, it is characterised in that first sensing device is shunt resistance, institute
The second sensing device is stated for fluxgate sensor device.
5. current sensing means as claimed in claim 4, it is characterised in that the fluxgate sensor device includes magnetic guiding loop
With detection circuit, the magnetic guiding loop is enclosed on the outside of the shunt resistance and induces a magnetic by the electric current for flowing through the first sensing device
Field intensity, the magnetic field intensity described in the detection electric circuit inspection in magnetic guiding loop obtains the second current detection signal.
6. the current sensing means as described in claim 3 or 5, it is characterised in that the current sensing means also includes magnetic conduction
The magnetic guiding loop is fixed on the shunt resistance by ring support, the magnetic conduction ring support.
7. current sensing means as claimed in claim 1, it is characterised in that first sensing device senses for Hall current
Device, second sensing device is shunt resistance.
8. current sensing means as claimed in claim 1, it is characterised in that first sensing device is fluxgate sensor
Device, second sensing device is shunt resistance.
9. a kind of current detecting system, it is characterised in that the current detecting system includes current sensing means, controller and letter
Number processor, wherein：
The current sensing means connects the signal processor, and the first current detection signal produced by its own is sent to
Signal processor, the signal processor is AD converted and signal isolation to first current detection signal；
The current sensing means connects the controller, and the second current detection signal produced by its own is sent into control
Device, the controller receives second current detection signal；
The signal processor connects the controller, and first current detection signal is sent into controller, the control
Device receives first current detection signal；
The controller is received after the first current detection signal and the second current detection signal, to the first current detection signal and
Second current detection signal is compared, if the difference of the first current detection signal and the second current detection signal is in threshold range
It is interior, then it regard the first current detection signal as final detection signal.
10. current detecting system as claimed in claim 9, it is characterised in that the current sensing means includes current signal
Port, the first sensing device and the second sensing device, wherein：
The first sensing device detection flows through the electric current of the current signal port and obtains the first current detection signal；
The second sensing device detection flows through the electric current of the first sensing device and obtains the second current detection signal.
11. current detecting system as claimed in claim 10, it is characterised in that the controller is comparison circuit.
12. current detecting system as claimed in claim 11, it is characterised in that the signal processor be AD conversion chip and
Isolating chip.
13. current detecting system as claimed in claim 11, it is characterised in that the current detecting system also includes partial pressure electricity
Resistance, the divider resistance connects the signal processor, and the divider resistance detectable voltage signals simultaneously send out the voltage signal
Give the signal processor.
14. current detecting system as claimed in claim 11, it is characterised in that the current detecting system also includes temperature-sensitive electricity
Device is hindered, the thermistor apparatus enters trip temperature benefit to first current detection signal and second current detection signal
Repay.
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| CN201621387097.7U CN206515387U (en) | 2016-12-16 | 2016-12-16 | Current sensing means and current detecting system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942251A (en) * | 2017-10-23 | 2018-04-20 | 宁德时代新能源科技股份有限公司 | Current detection system, method and current detection device |
| WO2018107987A1 (en) * | 2016-12-16 | 2018-06-21 | 联合汽车电子有限公司 | Current detection device, current detection system and current detection method |
| CN109975590A (en) * | 2019-05-13 | 2019-07-05 | 江苏原容新能源科技有限公司 | Current measurement circuit based on Hall chip and shunt resistance |
| CN111913032A (en) * | 2020-07-09 | 2020-11-10 | 深圳市大地和电气股份有限公司 | Current acquisition integrated structure of new energy motor controller |
| CN114755476A (en) * | 2022-04-14 | 2022-07-15 | 中国第一汽车股份有限公司 | Battery current detection method and electronic device |
| CN118243991A (en) * | 2024-05-30 | 2024-06-25 | 武汉嘉晨电子技术股份有限公司 | Current detection device, system and method |
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2016
- 2016-12-16 CN CN201621387097.7U patent/CN206515387U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107987A1 (en) * | 2016-12-16 | 2018-06-21 | 联合汽车电子有限公司 | Current detection device, current detection system and current detection method |
| CN108205077A (en) * | 2016-12-16 | 2018-06-26 | 联合汽车电子有限公司 | Current sensing means, current detecting system and electric current detecting method |
| CN107942251A (en) * | 2017-10-23 | 2018-04-20 | 宁德时代新能源科技股份有限公司 | Current detection system, method and current detection device |
| US10725110B2 (en) | 2017-10-23 | 2020-07-28 | Contemporary Amperex Technology Co., Limited | Current detection system, method and device |
| CN107942251B (en) * | 2017-10-23 | 2020-10-16 | 宁德时代新能源科技股份有限公司 | Current detection system, method and current detection device |
| CN109975590A (en) * | 2019-05-13 | 2019-07-05 | 江苏原容新能源科技有限公司 | Current measurement circuit based on Hall chip and shunt resistance |
| CN111913032A (en) * | 2020-07-09 | 2020-11-10 | 深圳市大地和电气股份有限公司 | Current acquisition integrated structure of new energy motor controller |
| CN114755476A (en) * | 2022-04-14 | 2022-07-15 | 中国第一汽车股份有限公司 | Battery current detection method and electronic device |
| CN118243991A (en) * | 2024-05-30 | 2024-06-25 | 武汉嘉晨电子技术股份有限公司 | Current detection device, system and method |
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