CN113049973B - Power battery detection device - Google Patents
Power battery detection device Download PDFInfo
- Publication number
- CN113049973B CN113049973B CN202110611132.8A CN202110611132A CN113049973B CN 113049973 B CN113049973 B CN 113049973B CN 202110611132 A CN202110611132 A CN 202110611132A CN 113049973 B CN113049973 B CN 113049973B
- Authority
- CN
- China
- Prior art keywords
- resistor
- circuit
- field effect
- effect transistor
- comparator
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/01—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using semiconducting elements having PN junctions
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The application relates to a power battery detection device, which comprises a power supply main circuit, a temperature sensing circuit, a voltage measuring circuit and a voltage comparison circuit, wherein the power supply main circuit adopts a full-wave rectification circuit to realize the conversion between alternating current and direct current, so that the waste of electric power is reduced, the whole circuit is simplified, and the cost is greatly saved; the temperature sensing circuit adopts a negative feedback regulation mechanism formed by a comparator, so that the regulation capability and stability of the circuit are improved; the voltage measuring circuit connects the operational amplifier, the triode and the circuit into a closed loop, and can accurately measure the voltage value of a superior circuit; and finally, a complementary circuit is formed by utilizing the two operation comparators, so that the accuracy of the whole circuit is improved.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a power battery detection device for new energy.
Background
Under the influence of the current world pattern, a new energy strategy is an effective measure for turning our country to depend on petroleum import for a long time, and a power battery is a direct means for getting rid of the dependence on petroleum. Unlike disposable energy sources such as petroleum, power batteries, which are a kind of new energy, are targeted for hundreds to thousands of repeated uses, in an effort to extend the life of the batteries indefinitely, and to stabilize the output of electric power highly. Therefore, in order to solve the problems of both safety and stability of high-energy storage that must be realized by a power battery instead of a primary performance source, studies on both temperature and power detection are necessary, and temperature detection directly determines the safety of the battery in a cycle in which the temperature is not negligible during charging and discharging of the battery, while power detection is also not negligible as an effective method for improving the stability of the battery in terms of the stability of the battery.
Disclosure of Invention
In order to solve the technical problems, the application provides a power battery detection device which comprises a power supply main circuit, a temperature sensing circuit, a voltage measuring circuit and a voltage comparison circuit, wherein the power supply main circuit comprises a full-wave rectification circuit, a filter circuit and a transformer; the temperature sensing circuit comprises a CMOS complementary circuit and a PNP triode sensitive to temperature; the voltage measuring circuit comprises a comparator and an NPN type triode; the voltage comparison circuit comprises a plurality of comparators and is used for comparing and calculating the electrical information of the reaction temperature detected by the temperature sensing circuit and the voltage information measured by the voltage measurement circuit.
The beneficial effect of this application is: the conversion between alternating current and direct current is realized by adopting a full-wave rectification circuit, so that the waste of electric power is reduced, the whole circuit is simplified, and the cost is greatly saved; the temperature sensing circuit adopts a negative feedback regulation mechanism formed by a comparator, so that the regulation capability and stability of the circuit are improved; the voltage measuring circuit connects the operational amplifier, the triode and the circuit into a closed loop, and can accurately measure the voltage value of a superior circuit; and finally, a complementary circuit is formed by utilizing the two operation comparators, so that the accuracy of the whole circuit is improved.
Drawings
Fig. 1 is a modular circuit diagram of a power battery detection device according to the present application.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1, a power battery detection device according to the present application includes a power supply main circuit, a temperature sensing circuit, a voltage measuring circuit and a voltage comparing circuit, wherein the power supply main circuit includes a full-wave rectifying circuit, a filter circuit and a transformer; the temperature sensing circuit comprises a CMOS complementary circuit and a PNP triode sensitive to temperature; the voltage measuring circuit comprises a comparator and an NPN type triode; the voltage comparison circuit comprises a plurality of comparators and is used for comparing and calculating the electrical information of the reaction temperature detected by the temperature sensing circuit and the voltage information measured by the voltage measurement circuit.
The power main circuit: the power supply main circuit comprises a full-wave rectifying circuit DS1 consisting of four diodes, an LC filter circuit consisting of an inductor L2, capacitors C1 and C2, a transformer T1, a diode D2 and two voltage stabilizing capacitors C3 and C4.
The full-wave rectification circuit is an essential part connected with a power grid, can convert alternating current with constantly changing size and direction into a low-frequency signal with consistent voltage size through the unidirectional conductivity of a diode, the low-frequency signal is purified into a low-frequency voltage signal with single frequency after passing through an LC filter capacitor, and the fixed frequency and the voltage signal can realize the function of keeping the current direction unchanged through the electromagnetic coupling of a transformer, wherein the transformer can also realize the function of changing the voltage value according to the actual requirement, specifically, the function is determined according to the ratio of the number of turns of a primary coil and the number of turns of a secondary coil of the transformer, if the required output voltage is greater than the input voltage, the turn ratio of the primary coil and the secondary coil should be reduced, and if the target voltage is less than the input voltage, the turn ratio of the primary coil and the secondary coil should be improved in proportion. The effect of the diode connected in series and the two capacitors connected in parallel at the output end of the secondary coil of T1 is: the current direction of the output end is ensured to be fixed, and the electric backflow damage of a rear-stage load to a front-stage power supply is prevented; the stability of the output voltage is ensured, and the noise wave influence of the load end is eliminated.
Specifically, the power main circuit comprises a full-wave rectifying circuit DS1 consisting of four diodes, and an LC filter circuit consisting of an inductor L2, capacitors C1 and C2, wherein one end of the inductor L2 is connected with one end of the capacitor C1, the other end of the capacitor C1 is connected with one end of the capacitor C2, the other end of the capacitor C2 is connected with one end of the inductor L2 and one end of the primary coil of the transformer T1, one end of the secondary coil of the transformer T1 is connected with one end of a diode D2, the other end of the secondary coil of the transformer T2 is connected with one ends of capacitors C2 and C2, the other ends of the capacitors C2 and C2 are connected with the other end of the diode D2 and a circuit output port, the circuit output port is further connected with one ends of resistors R2 and R2, the other end of the resistor R2 is connected with the circuit R2 and the diode D2, the other end of the resistor R2 is connected with the capacitor C2 and the resistor R2, and the other end of the diode D2, D6 and the other end of the resistor R5, and a diode D6 and a resistor R6 are respectively connected with the two ends of the inductor L3.
The temperature sensing circuit adopts a CMOS complementary circuit as a main body, 10 field effect transistors and a PNP type triode sensitive to temperature are integrally adopted, wherein two branches of the field effect transistors Q7 and Q10 form a group of mirror current circuits, and the current values of the two branches are equal at all times. The temperature sensing circuit converts the collected temperature signal into a voltage signal to complete the function, wherein the voltage signal is obtained by means of three elements, namely a PNP type triode Q5, a resistor R1 and a resistor R2. The PNP type triode is used as a current response component, when the temperature changes, the current in the PNP type triode Q5 changes, so that the voltage drop between the emitter and the base of the PNP type triode Q5 changes, and finally the current flowing through the resistor R1 changes, the current of the branch of the field effect transistor Q10 of the mirror current circuit corresponding to the branch where the resistor R1 is located also changes, and finally the voltage of the two ends of the resistor R2 changes, so that the temperature signal is converted into the voltage signal, the magnitude of the output voltage signal is in direct proportion to the voltage difference between the emitter and the base of the PNP type triode Q5, the proportionality coefficient is the ratio of the resistor R2 and the resistor R1, the voltage signal of the two ends of the resistor R2 is the final form of the temperature signal, in order to calibrate and control whether the temperature is in the safe range, one end of the drain of the resistor R2 and the field effect transistor Q11 is connected to the input positive end of the comparator OP3, the voltage signal is compared with the reference signal of the negative terminal input by the comparator OP3, if the voltage signal is greater than the reference signal, the OP3 outputs high level, the diode D4 is conducted, and the current is fed back to the output loop of the main circuit through the resistor R8, so that the output end of the main circuit is controlled to stop outputting power.
Specifically, the temperature sensing circuit comprises field effect transistors Q1-Q4, Q6-Q11, wherein the sources of the field effect transistors Q1, Q7, Q8, Q10 are connected, the drain and the gate of the field effect transistor Q1 are connected with the source of the field effect transistor Q2, the drain and the gate of the field effect transistor Q2 are connected with the gate of the field effect transistor Q4 and the drain of the field effect transistor Q3, the source of the field effect transistor Q3 and the source of the field effect transistor Q4 are connected with the collector and the base of a PNP type triode Q5, the emitter of the PNP type triode Q5 is connected with the drain of the field effect transistor Q6 through a resistor R1, the source of the field effect transistor Q6 is connected with the drain of the field effect transistor Q7, the drain of the field effect transistor Q4, the gate of the field effect transistor Q7 and the gate of the field effect transistor Q8 are connected with the output end of a comparator OP1, the input terminal of the comparator OP1 is connected with the drain 6 of the field effect transistor Q6, the negative input terminal of the comparator OP1 is connected to the drain of the field effect transistor Q8, the gate of the field effect transistor Q11, the drain of the field effect transistor Q9 and one end of the inductor L1, the other end of the inductor L1 is connected to the gate of the field effect transistor Q3, the source and the gate of the field effect transistor Q9 and one end of the resistor R2, and the other end of the resistor R2 is connected to the drain of the field effect transistor Q11 and the resistor R13.
A voltage measurement circuit: the voltage detection circuit plays a main function by a closed loop circuit formed by three elements of a comparator OP2, an NPN type triode Q12 and a resistor R16, a detected voltage signal is input from a negative end of the comparator OP2, the voltage of the positive end input by the comparator OP2 is always consistent with the voltage value of the negative end input by the comparator OP, therefore, the voltage of an emitter of the NPN type triode Q12 is locked, and finally, a signal is output from the emitter of the NPN type triode Q12 and flows through the resistor R16, and the detection of the voltage signal is finally completed.
Specifically, the voltage measurement circuit comprises a comparator OP2, an input negative terminal of the comparator OP2 is connected to one ends of resistors R14 and R15, the other end of the resistor R14 is connected to the resistor R15 through a capacitor C7, and is further connected to one ends of a capacitor C6 and a resistor R16, the other end of the resistor R16 is connected to an input positive terminal of the comparator OP2 and an emitter of an NPN-type triode Q12, an output terminal of the comparator OP2 is connected to a base of an NPN-type triode Q12, a collector of the NPN-type triode Q12 is connected to one end of a resistor R17, one end of a capacitor C5 and one end of a resistor R18 and a circuit output port, the resistor R18 is grounded through a diode D3, and the other ends of the capacitor C5, the resistor R17 and the capacitor C6 are grounded.
A voltage comparison circuit: the voltage comparison circuit is a bidirectional complementary comparison circuit composed of two amplifiers of a comparator OP3 and an OP4, as shown in FIG. 1, one end of a resistor R12 is connected with a reference power supply, and the other end is divided into two paths which are respectively connected to the negative input end of the comparator OP3 and the positive input end of the comparator OP4, when an input signal is greater than the reference voltage, the comparator OP3 outputs high level to turn on a diode D4, the signal flows through a resistor R8 and is fed back to the main circuit of the power supply through a PNP triode Q13, when the input signal is less than the reference voltage, the comparator OP4 outputs high level to turn on a diode D5, and the signal is transmitted to the base of the PNP triode Q13 after flowing through a resistor R8. The complementary comparison circuit realizes the identification of various signals, transmits a comparison result signal to the PNP triode Q13, and after the result signal is amplified by the triode, the signal is fed back to one side of the primary coil of the main circuit of the power supply and drives the side to respond by an electric signal.
Specifically, the voltage comparison circuit includes comparators OP3 and OP4, an input positive terminal of a comparator OP3 is connected to one end of a circuit output port and a resistor R2 through a resistor R13, another input negative terminal is connected to an input positive terminal of a comparator OP4 and then connected to one end of a resistor R12, another end of the resistor R12 is connected to a capacitor C12, a resistor R12 and a resistor R12 through a capacitor C12, another end of the resistor R12 is connected to an input negative terminal of the comparator OP 12, output terminals of the comparator OP 12 and the comparator OP 12 are connected to one ends of the resistor R12 and a fuse F12 through a diode D12 and a diode D12, another end of the fuse F12 is connected to one end of the resistor R12, another end of the resistor R12 is connected to the capacitor C12 and the resistor R12, another end of the capacitor R12, the capacitor OP 12 and the capacitor of the resistor R369 are grounded.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (3)
1. The utility model provides a power battery detection device, includes power main circuit, temperature sensing circuit, voltage measurement circuit and voltage comparison circuit, its characterized in that: the power supply main circuit comprises a full-wave rectifying circuit, a filter circuit and a transformer; the temperature sensing circuit comprises a CMOS complementary circuit and a PNP triode sensitive to temperature; the voltage measuring circuit comprises a comparator and an NPN type triode; the voltage comparison circuit comprises a plurality of comparators for performing comparison operation on the electrical information of the reaction temperature detected by the temperature sensing circuit and the voltage information measured by the voltage measurement circuit;
the temperature sensing circuit comprises field effect transistors Q1-Q4, Q6-Q11, wherein the sources of the field effect transistors Q1, Q7, Q8, Q10 are connected, the drain and the gate of the field effect transistor Q1 are connected with the source of the field effect transistor Q2, the drain and the gate of the field effect transistor Q2 are connected with the gate of the field effect transistor Q4 and the drain of the field effect transistor Q3, the source of the field effect transistor Q3 and the source of the field effect transistor Q4 are connected with the collector and the base of a PNP type triode Q5, the emitter of the PNP type triode Q5 is connected with the drain of the field effect transistor Q6 through a resistor R1, the source of the field effect transistor Q6 is connected with the drain of the field effect transistor Q6, the drain of the positive terminal of the field effect transistor Q6, the gate of the field effect transistor Q6 and the gate of the field effect transistor Q6 are connected with the output terminal of a comparator 36OP 72, the input of the comparator 36OP 72 is connected with the drain of the field effect transistor Q6, the negative input end of the comparator OP1 is respectively connected with the drain of the field effect transistor Q8, the gate of the field effect transistor Q11, the drain of the field effect transistor Q9 and one end of an inductor L1, the other end of the inductor L1 is connected with the gate of the field effect transistor Q3, the source and the gate of the field effect transistor Q9 and one end of a resistor R2, and the other end of the resistor R2 is connected with the drain of the field effect transistor Q11 and the resistor R13;
the voltage comparison circuit comprises comparators OP3 and OP3, an input positive end of the comparator OP3 is connected with an output port of the circuit and one end of the resistor R3 through a resistor R3, the other input negative end of the comparator OP3 is connected with one end of the resistor R3 after being connected with an input positive end of the comparator OP3, the other end of the resistor R3 is connected with an input negative end of the capacitor C3, the resistor R3 and the resistor R3 through a capacitor C3, the other end of the resistor R3 is connected with the input negative end of the comparator OP3, output ends of the comparator OP3 and the comparator OP3 are respectively connected with one ends of the resistor R3 and a fuse F3 through a diode D3 and a diode D3, the other end of the fuse F3 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the capacitor C3 and the capacitor C3, and the other end of the capacitor R3 is grounded.
2. The power battery detection device according to claim 1, wherein: the power supply main circuit comprises a full-wave rectifying circuit DS1 composed of four diodes and an LC filter circuit composed of an inductor L2, capacitors C1 and C2, one end of the inductor L2 is connected with one end of the capacitor C1, the other end of the capacitor C1 is connected with one end of the capacitor C2, the other end of the capacitor C2 is connected with one end of an inductor L2 and one end of a primary coil of a transformer T1, one end of a secondary coil of the transformer T1 is connected with one end of a diode D2, the other end of the secondary coil of the transformer T1 is respectively connected with one ends of capacitors C3 and C4, the other ends of the capacitors C3 and C4 are connected with the other end of the diode D2 and a circuit output port, the circuit output port is further connected with one ends of resistors R3 and R4, the other end of the resistor R3 is respectively connected with a circuit R5 and a diode D7, the other end of the resistor R4 is connected with the capacitor C12 and a resistor R6, and the other end of the capacitor C12 are respectively connected with the diode D7, D6 and the other end of the resistor R5, and a diode D6 and a resistor R6 are respectively connected with the two ends of the inductor L3.
3. The power battery detection device according to claim 1, wherein: the voltage measuring circuit comprises a comparator OP2, the input negative end of the comparator OP2 is respectively connected with one ends of resistors R14 and R15, the other end of the resistor R14 is connected with the resistor R15 through a capacitor C7, and is further connected with one ends of a capacitor C6 and a resistor R16, the other end of the resistor R16 is connected with the input positive end of the comparator OP2 and the emitter of an NPN type triode Q12, the output end of the comparator OP2 is connected with the base of an NPN type triode Q12, the collector of the NPN type triode Q12 is respectively connected with one end of a resistor R17, one end of a capacitor C5 and one end of a resistor R18 and a circuit output port, the resistor R18 is grounded through a diode D3, and the other ends of the capacitor C5, the resistor R17 and the capacitor C6 are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110611132.8A CN113049973B (en) | 2021-06-02 | 2021-06-02 | Power battery detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110611132.8A CN113049973B (en) | 2021-06-02 | 2021-06-02 | Power battery detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113049973A CN113049973A (en) | 2021-06-29 |
| CN113049973B true CN113049973B (en) | 2021-08-13 |
Family
ID=76518636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110611132.8A Active CN113049973B (en) | 2021-06-02 | 2021-06-02 | Power battery detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113049973B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1744516A1 (en) * | 1990-04-06 | 1992-06-30 | Ленинградский Политехнический Институт Им.М.И.Калинина | Converter of temperature difference to voltage |
| EP1046890A1 (en) * | 1999-04-21 | 2000-10-25 | EM Microelectronic-Marin SA | Temperature level detection circuit |
| US6297620B1 (en) * | 2000-09-29 | 2001-10-02 | Sprint Communications Company, L.P. | High efficiency low current power supply and battery charge system |
| CN1558253A (en) * | 1998-09-11 | 2004-12-29 | ��S��Ǯ | Apparatus and method for measuring complex impedance of battery and battery pack |
| JP2007159289A (en) * | 2005-12-06 | 2007-06-21 | Fanuc Ltd | Motor drive unit |
| CN101055209A (en) * | 2007-05-31 | 2007-10-17 | 淄博惠工仪器有限公司 | Switch cabinet contact temperature monitoring and alarming system |
| JP2009268176A (en) * | 2008-04-22 | 2009-11-12 | Nippon Soken Inc | Charging control apparatus for secondary battery for vehicle |
| CN102638085A (en) * | 2011-05-31 | 2012-08-15 | 重庆瑞升康博电气有限公司 | Intelligent storage battery charging and management device for electric vehicles |
| CN103076105A (en) * | 2012-12-27 | 2013-05-01 | 北京蓝派克电力科技有限公司 | Passive wireless temperature sensor |
| CN103542888A (en) * | 2013-09-27 | 2014-01-29 | 珠海鼎日电子科技有限公司 | Temperature and current online monitoring device of power equipment |
| CN103645770A (en) * | 2013-12-03 | 2014-03-19 | 北京中电华大电子设计有限责任公司 | CMOS integrated temperature sensor circuit |
| CN103884383A (en) * | 2014-03-28 | 2014-06-25 | 深圳市中兴移动通信有限公司 | Temperature measurement and identification circuit of built-in battery, battery, detecting device and detecting method |
| JP2014130099A (en) * | 2012-12-28 | 2014-07-10 | Toshiba Corp | Temperature detection circuit, temperature compensation circuit and buffer circuit |
| CN203785809U (en) * | 2014-02-12 | 2014-08-20 | 杨峰 | Combustible gas temperature detection and alarming circuit |
| CN208207171U (en) * | 2018-05-11 | 2018-12-07 | 湖北民族学院 | A kind of battery capacity tester |
| US10432432B1 (en) * | 2018-07-27 | 2019-10-01 | Nxp B.V. | Loss of signal detector with PVT compensation |
| CN110794319A (en) * | 2019-11-12 | 2020-02-14 | 河南工学院 | Method and device for predicting parameters of lithium battery impedance model and readable storage medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9425649B2 (en) * | 2014-01-03 | 2016-08-23 | Capstone Lighting Technologies, Llc. | Apparatus and method for switch state detection and controlling electrical power |
-
2021
- 2021-06-02 CN CN202110611132.8A patent/CN113049973B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1744516A1 (en) * | 1990-04-06 | 1992-06-30 | Ленинградский Политехнический Институт Им.М.И.Калинина | Converter of temperature difference to voltage |
| CN1558253A (en) * | 1998-09-11 | 2004-12-29 | ��S��Ǯ | Apparatus and method for measuring complex impedance of battery and battery pack |
| EP1046890A1 (en) * | 1999-04-21 | 2000-10-25 | EM Microelectronic-Marin SA | Temperature level detection circuit |
| US6297620B1 (en) * | 2000-09-29 | 2001-10-02 | Sprint Communications Company, L.P. | High efficiency low current power supply and battery charge system |
| JP2007159289A (en) * | 2005-12-06 | 2007-06-21 | Fanuc Ltd | Motor drive unit |
| CN101055209A (en) * | 2007-05-31 | 2007-10-17 | 淄博惠工仪器有限公司 | Switch cabinet contact temperature monitoring and alarming system |
| JP2009268176A (en) * | 2008-04-22 | 2009-11-12 | Nippon Soken Inc | Charging control apparatus for secondary battery for vehicle |
| CN102638085A (en) * | 2011-05-31 | 2012-08-15 | 重庆瑞升康博电气有限公司 | Intelligent storage battery charging and management device for electric vehicles |
| CN103076105A (en) * | 2012-12-27 | 2013-05-01 | 北京蓝派克电力科技有限公司 | Passive wireless temperature sensor |
| JP2014130099A (en) * | 2012-12-28 | 2014-07-10 | Toshiba Corp | Temperature detection circuit, temperature compensation circuit and buffer circuit |
| CN103542888A (en) * | 2013-09-27 | 2014-01-29 | 珠海鼎日电子科技有限公司 | Temperature and current online monitoring device of power equipment |
| CN103645770A (en) * | 2013-12-03 | 2014-03-19 | 北京中电华大电子设计有限责任公司 | CMOS integrated temperature sensor circuit |
| CN203785809U (en) * | 2014-02-12 | 2014-08-20 | 杨峰 | Combustible gas temperature detection and alarming circuit |
| CN103884383A (en) * | 2014-03-28 | 2014-06-25 | 深圳市中兴移动通信有限公司 | Temperature measurement and identification circuit of built-in battery, battery, detecting device and detecting method |
| CN208207171U (en) * | 2018-05-11 | 2018-12-07 | 湖北民族学院 | A kind of battery capacity tester |
| US10432432B1 (en) * | 2018-07-27 | 2019-10-01 | Nxp B.V. | Loss of signal detector with PVT compensation |
| CN110794319A (en) * | 2019-11-12 | 2020-02-14 | 河南工学院 | Method and device for predicting parameters of lithium battery impedance model and readable storage medium |
Non-Patent Citations (5)
| Title |
|---|
| Design and Analysis of a Combined Power Supply for High-Field Quasi-Continuous Magnets;Hongfa Ding等;《 IEEE Transactions on Applied Superconductivity》;20120630;第22卷(第3期);全文 * |
| Estimation of model parameters and state-of-charge for battery management system of Li-ion battery in EVs;Venu Sangwan等;《 2017 IEEE Transportation Electrification Conference (ITEC-India)》;20180409;全文 * |
| 便携式蓄电池技术参数监测系统的设计;孟荣爱等;《电池工业》;20120625;第17卷(第3期);第151页左栏第3段至第152页右栏第3段，图1-5 * |
| 动力电池内阻测量方法的研究;林勇等;《电子质量》;20200720(第7期);全文 * |
| 蓄电池剩余容量在线监测的探讨;向小民等;《电源技术》;20090320;第33卷(第3期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113049973A (en) | 2021-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9176178B2 (en) | Battery simulation circuit | |
| CN101923111A (en) | Isolation detection circuit of DC bus voltage | |
| CN207424076U (en) | Current detection circuit | |
| CN113049973B (en) | Power battery detection device | |
| CN102621399B (en) | Inductance measuring method based on switching circuit | |
| CN109270325B (en) | Self-excitation type open-loop fluxgate current sensor circuit and self-excitation oscillation method thereof | |
| CN105223533A (en) | A kind of superhigh precision responds DC current prover circuit fast | |
| CN208140791U (en) | A kind of zero-detection circuit | |
| RU165168U1 (en) | LITHIUM-ION BATTERY SIMULATOR | |
| CN110836998A (en) | Voltage sensor circuit | |
| CN111474399A (en) | High-voltage side large-current precise sampling conversion circuit | |
| CN209432882U (en) | Zero flux current sensor | |
| CN202486194U (en) | Current sensor based on Rogowski coil | |
| CN210775634U (en) | Alternating current detection circuit | |
| CN211061595U (en) | Feedback type bidirectional current magnetic isolation sampling circuit | |
| CN204314347U (en) | A kind of electronic load | |
| CN205210164U (en) | Electric power system gathers signal conditioning module | |
| CN201548652U (en) | Polarity testing device of current transformer | |
| CN209311556U (en) | A kind of current detection circuit | |
| CN109391232B (en) | Current detection device applied to photovoltaic power optimizer | |
| CN208969157U (en) | A kind of DC voltage measuring device | |
| CN208537614U (en) | Current detection means | |
| CN205103391U (en) | Ultrahigh precision quick response direct current normalizing device circuit | |
| CN109085409B (en) | Direct-current voltage measuring device | |
| CN108132426B (en) | Alarm detector for broken line of current transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |