CN205353210U - It is applicable in internal resistance of cell on -line monitoring device of multiple battery type - Google Patents
It is applicable in internal resistance of cell on -line monitoring device of multiple battery type Download PDFInfo
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- CN205353210U CN205353210U CN201521063665.3U CN201521063665U CN205353210U CN 205353210 U CN205353210 U CN 205353210U CN 201521063665 U CN201521063665 U CN 201521063665U CN 205353210 U CN205353210 U CN 205353210U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 239000000178 monomer Substances 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 15
- 230000003321 amplification Effects 0.000 claims description 14
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000005669 field effect Effects 0.000 description 1
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Abstract
The utility model discloses an it is applicable in internal resistance of cell on -line monitoring device of multiple battery type, including cell, await measuring battery terminal, accurate constant ohmic resistance and blocking capacitance C promptly by the external connecting terminal who exchanges constant current signal generating circuit, battery monomer or group battery and constitute the return circuit, sampling unit constitutes return circuit, the 2nd preamplification circuit, the 2nd filter circuit and the 2nd lock -in amplifier circuit component return circuit by a preamplification circuit, a filter circuit and a lock -in amplifier circuit, the control unit constitutes the return circuit by exchanging constant current signal generating circuit and pressure regulating circuit and a lock -in amplifier circuit, constitutes the return circuit by interchange constant current signal generating circuit and pressure regulating circuit and the 2nd lock -in amplifier circuit, calculates the internal resistance of cell that awaits measuring by the alternating voltage value and the alternating current resistance at single -chip microcomputer control system battery both ends that the measurement obtained according to the sampling output unit and accurate constant ohmic resistance both ends. The utility model discloses can be in the internal resistance of different batteries under the condition of not changing the circuit.
Description
The technical field is as follows:
the utility model relates to an applicable battery internal resistance monitoring devices in multiple battery type for the situation of change of on-line monitoring battery internal resistance.
Background art:
at present, the known battery internal resistance monitoring devices mainly comprise a direct current discharge method and an alternating current injection method. The principle of the direct current discharging method is that the battery is in a static (or off-line) state, large current discharging is carried out on an external load, the voltage and the discharging current of the battery are measured, and the internal resistance of the battery is obtained through the ratio of the two values. In practical application, however, the measurement of the internal resistance of the battery is mainly applied to online monitoring of the battery and state evaluation of the battery, i.e. the battery to be measured cannot be taken out of the battery pack during the measurement. Therefore, in order to overcome the defect that the internal resistance of the battery cannot be monitored when the battery is in a working state by the conventional internal resistance monitoring device for the battery, the internal resistance of the battery is measured by adopting an alternating current injection method, and the internal resistance change condition of the battery in the working state can be monitored by the method.
The utility model has the following contents:
an object of the utility model is to provide an applicable battery internal resistance monitoring devices in multiple battery type.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
the on-line monitoring device for the internal resistance of the battery applicable to various battery types comprises a battery unit, wherein the battery unit is formed by sequentially connecting an alternating current constant current signal generating circuit, a battery monomer or an external terminal of a battery pack, namely a battery terminal to be detected, a precise fixed value resistor and a blocking capacitor C in series to form a loop;
the sampling unit comprises two loops, wherein one loop is formed by sequentially connecting a first pre-amplification circuit, a first filter circuit and a first phase-locked amplification circuit in series, and the other loop is formed by sequentially connecting a second pre-amplification circuit, a second filter circuit and a second phase-locked amplification circuit in series;
the control unit comprises two loops, one loop is formed by sequentially connecting an alternating current constant current signal generating circuit, a voltage regulating circuit and a first phase-locked amplifying circuit in series, the other loop is formed by sequentially connecting an alternating current constant current signal generating circuit, a voltage regulating circuit and a second phase-locked amplifying circuit in series, and the output end of the first phase-locked amplifying circuit and the output end of the second phase-locked amplifying circuit are both connected to the input end of the single chip microcomputer control system; and calculating the internal resistance of the battery to be measured by the singlechip control system according to the alternating current voltage value and the alternating current resistance value at the two ends of the battery and the two ends of the precise constant value resistor measured by the sampling output unit.
The utility model discloses further improvement lies in: the alternating current constant current signal generating circuit comprises a sine alternating voltage generating circuit and a constant voltage variable constant current circuit; wherein,
the sinusoidal AC voltage generating circuit is formed by an ICL8038 chip U1Is formed of a resistor R1、R2、R3、R4And a capacitor C7(ii) a Wherein, U14 terminal of (2) via R1Connected to a +12V power supply, U15 terminal through R2Connected to a +12V power supply, U1Is connected with a +12V power supply, U17 terminal and U1Is connected to the 8 terminals of U19 terminal through R4Connected to a +12V power supply, U110 terminal through C7Connected to a-12V power supply, U1Is connected to a-12V power supply, U112 and R3Is connected to terminal 1, R3The 3 terminal of the power supply is connected with a-12V power supply;
constant voltage to constant current circuit is by power amplifier LM1578 chip U2And amplifier OP07 chip U3Is formed of a resistor R7、R8、R9、R10、R11And a capacitor C1、C2(ii) a Wherein, U21 terminal through R8And U12 terminal of U21 terminal through R9And U3Is connected with the 6 terminal, U22 terminal through R7Ground, U22 terminal through R10、R11And C1Is connected to the positive pole of U2Is connected with a-12V power supply, U24 terminal and diode D1、D22 terminal of U2Is connected to a +12V power supply, D 1Is connected to a +12V power supply, D2Is connected to a-12V power supply, D1And D21 terminal through R11And C1Is connected to the positive pole of U3Is connected with a-12V power supply, U3Is connected with a +12V power supply, U32 terminal and C1Is connected to the positive electrode of C1Passing through a battery terminal to be tested, a precision constant value resistor and C2And (4) grounding.
The utility model discloses further improvement lies in: the voltage regulating circuit comprises a MOSFET tube T1And a resistance R4、R5、R6(ii) a Wherein R is52 fixed end terminal and U1Is connected to terminal 9, R51 fixed end terminal of (1) is grounded, R5Three terminals and T1Is connected to the gate terminal g of T1S is grounded, T1Through R to the drain terminal d6Is connected with a +3.3V power supply.
The utility model discloses further improvement lies in: the first pre-amplifier circuit comprises a capacitor C8、C9Resistance R12、R13、R14And amplifier AD620 chip U4(ii) a Wherein, U41 terminal through R14And U4Is connected to the 8 terminals of U42 terminal through C8Connected to the negative pole of the battery terminal to be tested, U42 terminal through R12Ground, U43 terminal through C9Connected to the positive pole of the battery terminal to be tested, U43 terminal through R13Ground, U4Is connected with a-12V power supply, U4Is connected with a +12V power supply, U 4The 5 terminal of (1) is grounded.
The utility model discloses further improvement lies in: the first filter circuit comprises a resistor R15、R16、R17、R18Capacitor C10、C11、C12、C13And an amplifier Lm353 chip U5、U6、U7(ii) a Wherein U is55 terminal through C11、C10And U46 of the terminal is connected with U55 terminal through C11、R15And U5Is connected with the 7 terminal, U55 terminal through R16Ground, U5Is connected with a-12V power supply, U5Is connected with a +12V power supply, U63 terminal and U57 terminal of U6Is connected with a-12V power supply, U6Is connected with a +12V power supply, U62 terminal and U61 terminal through R17、R18And U75 of the terminal is connected with U75 terminal through R18、C13And U7Is connected with the 7 terminal, U75 terminal through C13Ground, U7Is connected with a-12V power supply, U7Is connected to a +12V power supply.
The utility model discloses further improvement lies in: the first phase-locked amplifier circuit comprises a resistor R19、R20、R21、R22、R23、R24、R25And phase-locked amplifier AD630 chip U8(ii) a Wherein, U81 terminal and 16 terminals and U77 terminal of U83 terminal through R19Connected to a-12V power supply, U84 terminal of (2) via R20Connected to a-12V power supply, U85 terminal through R21Connected to a-12V power supply, U86 terminal through R22Connected to a-12V power supply, U 8Is connected with a-12V power supply, U89 terminal and T1Is connected to drain terminal d of U810 terminal of U8Is connected with a +12V power supply, U814 terminal through R25Ground, U8Through R to the 15 terminal24And U8Is connected to terminal 13, U8Through R to the 15 terminal23And U8Are connected to 16 terminals of U8And the 13 terminal of the ARM singlechip is connected with an A/D sampling output end of the ARM singlechip.
The utility model discloses further improvement lies in: the second pre-amplifier circuit comprises a capacitor C14、C15Resistance R26、R27、R28And amplifier AD620 chip U9(ii) a Wherein, U91 terminal through R28And U9Is connected to the 8 terminals of U92 terminal through C14Connected to the 1-terminal of the precision constant value resistor, U92 terminal through R26Ground, U93 terminal through C15Connected to the 2-terminal of the precision constant value resistor, U93 terminal through R27Ground, U9Is connected with a-12V power supply, U9Is connected with a +12V power supply, U9The 5 terminal of (1) is grounded.
The utility model discloses further improvement lies in: the second filter circuit comprises a resistor R29、R30、R31、R32Capacitor C16、C17、C18、C19And an amplifier Lm353 chip U10、U11、U12(ii) a Wherein U is105 terminal through C17、C16And U96 of the terminal is connected with U105 terminal through C17、R29And U10Is connected with the 7 terminal, U105 terminal through R30Ground, U 10Is connected with a-12V power supply, U10Is connected with a +12V power supply, U113 terminal and U107 terminal of U11Is connected with a-12V power supply, U11Is connected with a +12V power supply, U112 terminal and U111 terminal through R31、R32And U75 of the terminal is connected with U125 terminal through R32、C19And U12Is connected with the 7 terminal, U125 terminal through C19Ground, U12Is connected with a-12V power supply, U12Is connected to a +12V power supply.
The utility model discloses further improvement lies in: the second phase-locked amplifying circuit comprises a resistor R33、R34、R35、R36、R37、R38、R39And phase-locked amplifier AD630 chip U13(ii) a Wherein, U131 terminal and 16 terminals and U127 terminal of U133 terminal through R33Connected to a-12V power supply, U134 terminal of (2) via R34Connected to a-12V power supply, U135 terminal through R35Connected to a-12V power supply, U136 terminal through R36Connected to a-12V power supply, U13Is connected with a-12V power supply, U139 terminal and T1Is connected to drain terminal d of U1310 terminal of U13Is connected with a +12V power supply, U1314 terminal through R39Ground, U13Through R to the 15 terminal38And U13Is connected to terminal 13, U13Through R to the 15 terminal37And U13Are connected to 16 terminals of U 13And the 13 terminal of the ARM singlechip is connected with an A/D sampling output end of the ARM singlechip.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an exchange the injection method and measure the internal resistance of battery, establish ties battery and a accurate definite value resistance, simultaneously with the alternating voltage signal value input two tunnel preamplification circuits that accurate definite value resistance both ends and battery both ends produced, after the circuit processing, can be in order to confirm the alternating voltage value that produces at the battery both ends and the alternating current value that flows through the battery when measuring with, thereby calculate the internal resistance of battery. The measurement operation is simple, the battery can be measured only by connecting the battery with a lead wire, and the internal resistance of various types of batteries can be measured under the condition of not changing a circuit. The alternating voltage value at the standard resistor and the voltage value at the battery are measured simultaneously in the measuring process, so that the influence of the interference of the circuit on the measuring result can be effectively avoided.
To sum up, the utility model discloses the alternating voltage value of standard resistance department and the magnitude of voltage of battery department are simultaneous measurement in the measurement process, can effectually avoid the influence of the interference of circuit to measuring result. The measurement operation is simple, the battery can be measured only by connecting the battery with the lead wire, and the internal resistances of different batteries can be measured without changing a circuit.
Description of the drawings:
FIG. 1 is a schematic block diagram of the present invention;
fig. 2 is a diagram of an ac constant current source circuit and a voltage regulating circuit according to the present invention;
FIG. 3 is a circuit diagram of a pre-amplifier of the present invention;
fig. 4 is a low-pass, high-pass filter circuit diagram of the present invention;
fig. 5 is a phase-locked amplifying circuit diagram of the present invention;
the specific implementation mode is as follows:
the present invention will be further explained with reference to the drawings and examples.
Fig. 1 can be known that the specific form of the present invention is to adopt a four-lead connection method to reduce the influence of the wire impedance on the measurement of the internal resistance of the battery, and adopt an alternating current injection method to measure the internal resistance of the battery. Connecting the AC constant current output end with C1Is connected to the positive pole of C1The negative pole of the battery to be tested is connected with the positive pole of the battery to be tested, the negative pole of the battery to be tested is connected with the 1 end of the precision constant value resistor, and the 2 end of the precision constant value resistor is connected with the C2Is connected to the positive pole of C2The negative electrode of the anode is connected to the ground end; the positive and negative stages of the battery pass through C3、C4The first pre-amplifying circuit, the first filter circuit and the first phase-locked amplifying circuit are connected in sequence, and the output end of the first pre-amplifying circuit is connected with the A/D sampling input end of the ARM system; the 1 end and the 2 end of the resistor pass through C5、C6The second pre-amplifying circuit, the second filter circuit and the second phase-locked amplifying circuit are connected in sequence, and the output end of the second pre-amplifying circuit is connected with the A/D sampling input end of the ARM system; and calculating two voltage values obtained by A/D sampling, and uploading the obtained internal resistance value of the battery to a computer for display. The calculation formula of the internal resistance of the battery is as follows.
In the formula r0Is the measured internal resistance value of the battery; r0Is a known precise fixed value resistance; u shaperceThe voltage difference between two sides of the internal resistance of the battery, U, is obtained by measurementrce0The measured calibration value of the voltage difference at the two sides of the internal resistance of the battery is the voltage value measured when the connecting terminal of the battery is short-circuited; u shapeR0Measuring the voltage difference of two sides of the precision constant value resistor; k0And K1The two are respectively the amplification times of the voltage values at the two sides of the precision constant value resistor and the battery internal resistance. The alternating voltage value at the standard resistor and the voltage value at the battery are measured simultaneously in the measuring process, so that the current flowing through the internal resistance of the battery and the current flowing through the precision constant value resistor at the measuring moment can be considered to be the same, and the problem of time sequence phase asynchronization in circuit measurement is avoided.
The AC constant current source circuit and voltage regulating circuit are designed as figure 2, mainly using ICL8083 to produce sinusoidal voltage signal, its 2 terminal outputs sinusoidal signal, after passing through amplification circuit, it is inputted into the circuit formed from LM1875 power amplifier and OP07 amplifier, and the effective value of current of outputted constant current AC signal is inputted into voltage UiAnd a resistance R11Is determined by the ratio of (A) to (B), the frequency of the current being determined by the resistance R1Resistance R2And a capacitor C7And (4) determining. Voltage-regulating routing MOSFET (Metal-oxide-semiconductor field Effect transistor) T 1The square wave signal of which the square wave voltage output by the ICL8038 chip 9 terminal is reduced to 1V is taken as a reference signal to be connected to the reference signal input end of a phase locking and amplifying circuit; the utility model relates to a constant current source is 1 kHz's sinusoidal constant current source, and its output current virtual value can be adjusted according to actual measurement requirement, at R11At a certain time, adjust UinThe output current is constant and linearly adjustable. In order to generate larger current value, an integrated power amplifier LM1875 is adopted, the output distortion degree of the integrated power amplifier LM1875 is small, and the integrated power amplifier LM can output 2A current at most when working under +/-12V. By adopting the OP07 as a following stage, the output impedance is effectively reduced, and the input impedance is improved, so that the distortion of the signal can be reduced. R10For the current limiting resistor, a high-power resistor is generally required, and in order to reduce the loss of the circuit, the value is generally selected to be as small as possible.
The amplifying circuit is composed of an AD620 chip, the circuit connection condition is shown in figure 3, the amplification factor of the amplifying circuit is determined by an external resistor, and the calculation formula of the amplification factor K of the AD620 is as follows. The amplification factor is formed by a resistor R14(or R)28) Is determined.
The signal transmission mode is that two ends of the cathode of the battery and the anode of the battery in the figure 2 respectively pass through C8、C9And U in FIG. 3 4The terminals 2 and 3 are connected, and the end 1 and the end 2 of the constant value resistor in the figure 2 are respectively passed through C14、C15And U9The 2 terminal and the 3 terminal are connected, so that the amplification of two groups of measurement signals can be realized.
The filter circuit mainly comprises an LM353 chip, the circuit connection condition is shown in figure 4, collected signals need to be filtered firstly before being used, the filter circuit is related to the frequency of an alternating current signal, the frequency of a constant current alternating current signal is 1k, a low-pass filter and a high-pass filter are related according to the frequency, and the cut-off frequency is 500 Hz-2 kHz. The signal transmission mode is that U in figure 34Through terminal 7 to terminal C10、C11And U5Is connected with the terminal 5 of the U9Through terminal 7 to terminal C16、C17And U10The 5 terminals are connected, and the filtering of two groups of measurement signals can be realized.
The phase-locked and amplifying circuit consists of AD630 coreThe circuit connection of the chip is shown in fig. 5, the filtered signal can be extracted again through the phase-locked amplifying circuit, and signals which are not 1kHz are removed, so that the influence of noise on the measurement result is weakened. The signal transmission mode is that U in figure 477 terminal and U in FIG. 58Is connected to the 16 terminal, T in FIG. 21Drain terminal d of (1) and U of FIG. 58Is connected to the terminal 9, U in FIG. 5 8The 13 terminal of the ARM singlechip is connected with an A/D sampling module in the ARM singlechip; will U127 terminal and U13Is connected to the 16 terminal, T in FIG. 21Drain terminals d and U of13Is connected with the terminal 9 of the U13And the 13 terminal of the ARM is connected with an A/D sampling module in the ARM singlechip. And calculating two voltage values obtained by A/D sampling according to a formula to obtain the internal resistance of the battery, and uploading the internal resistance to a computer for display.
To sum up, the utility model provides an on-line monitoring device for the internal resistance of battery, which is suitable for various battery types, the injection signal line of the alternating current signal is arranged at the outer end of the measurement signal line; the alternating voltage values generated by the alternating signal at the two ends of the battery and the two ends of the standard constant value resistor can be measured simultaneously.
Claims (9)
1. The utility model provides an applicable battery internal resistance on-line monitoring device in multiple battery type which characterized in that: the device comprises a battery unit, wherein the battery unit is formed by sequentially connecting an alternating current constant current signal generating circuit (1), an external terminal of a battery monomer or a battery pack, namely a battery terminal (2) to be tested, a precise fixed value resistor (3) and a blocking capacitor C (4) in series to form a loop;
the sampling unit comprises two loops, wherein one loop is formed by sequentially connecting a first pre-amplification circuit (5), a first filter circuit (6) and a first phase-locked amplification circuit (7) in series, and the other loop is formed by sequentially connecting a second pre-amplification circuit (8), a second filter circuit (9) and a second phase-locked amplification circuit (10) in series;
the control unit comprises two loops, one loop is formed by sequentially connecting an alternating current constant current signal generating circuit (1), a voltage regulating circuit (11) and a first phase-locked amplifying circuit (7) in series, the other loop is formed by sequentially connecting the alternating current constant current signal generating circuit (1), the voltage regulating circuit (11) and a second phase-locked amplifying circuit (10) in series, and the output end of the first phase-locked amplifying circuit (7) and the output end of the second phase-locked amplifying circuit (10) are both connected to the input end of a single chip microcomputer control system (12).
2. The device for monitoring the internal resistance of the battery in an online manner, applicable to a plurality of battery types, according to claim 1, is characterized in that: the alternating current constant current signal generating circuit (1) comprises a sine alternating current voltage generating circuit (13) and a constant voltage variable constant current circuit (14); wherein,
the sine alternating voltage generating circuit (13) is composed of an ICL8038 chip U1Is formed of a resistor R1、R2、R3、R4And a capacitor C7(ii) a Wherein, U14 terminal of (2) via R1Connected to a +12V power supply, U15 terminal through R2Connected to a +12V power supply, U1Is connected with a +12V power supply, U17 terminal and U1Is connected to the 8 terminals of U19 terminal through R4Connected to a +12V power supply, U110 terminal through C7Connected to a-12V power supply, U1Is connected to a-12V power supply, U112 and R3Is connected to terminal 1, R3The 3 terminal of the power supply is connected with a-12V power supply;
the constant voltage-to-constant current circuit (14) is composed of a power amplifier LM1578 chip U2And amplifier OP07 chip U3Is formed of a resistor R7、R8、R9、R10、R11And a capacitor C1、C2(ii) a Wherein, U21 terminal through R8And U12 terminal of U21 terminal ofPer R9And U3Is connected with the 6 terminal, U22 terminal through R7Ground, U22 terminal through R10、R11And C1Is connected to the positive pole of U2Is connected with a-12V power supply, U 24 terminal and diode D1、D22 terminal of U2Is connected to a +12V power supply, D1Is connected to a +12V power supply, D2Is connected to a-12V power supply, D1And D21 terminal through R11And C1Is connected to the positive pole of U3Is connected with a-12V power supply, U3Is connected with a +12V power supply, U32 terminal and C1Is connected to the positive electrode of C1Passing through a battery terminal (2) to be tested, a precision constant value resistor (3) and a resistor C2And (4) grounding.
3. The device according to claim 2, wherein the device is adapted for on-line monitoring of internal resistance of battery for multiple battery types, and comprises: the voltage regulating circuit (11) comprises a MOSFET tube T1And a resistance R4、R5、R6(ii) a Wherein R is52 fixed end terminal and U1Is connected to terminal 9, R51 fixed end terminal of (1) is grounded, R5Three terminals and T1Is connected to the gate terminal g of T1S is grounded, T1Through R to the drain terminal d6Is connected with a +3.3V power supply.
4. The device according to claim 3, wherein the device is adapted for on-line monitoring of internal resistance of battery for multiple battery types, and comprises: the first pre-amplifier circuit (5) comprises a capacitor C8、C9Resistance R12、R13、R14And amplifier AD620 chip U4(ii) a Wherein, U41 terminal through R14And U4Is connected to the 8 terminals of U 42 terminal through C8Connected to the negative pole of the battery terminal (2) to be tested, U42 terminal through R12Ground, U43 terminal through C9Is connected with the positive electrode of a battery terminal (2) to be tested, U43 terminal through R13Ground, U4Is connected with a-12V power supply, U4Is connected with a +12V power supply, U4The 5 terminal of (1) is grounded.
5. The device according to claim 4, wherein the device is adapted for on-line monitoring of internal resistance of battery of multiple battery types, and comprises: the first filter circuit (6) comprises a resistor R15、R16、R17、R18Capacitor C10、C11、C12、C13And an amplifier Lm353 chip U5、U6、U7(ii) a Wherein U is55 terminal through C11、C10And U46 of the terminal is connected with U55 terminal through C11、R15And U5Is connected with the 7 terminal, U55 terminal through R16Ground, U5Is connected with a-12V power supply, U5Is connected with a +12V power supply, U63 terminal and U57 terminal of U6Is connected with a-12V power supply, U6Is connected with a +12V power supply, U62 terminal and U61 terminal through R17、R18And U75 of the terminal is connected with U75 terminal through R18、C13And U7Is connected with the 7 terminal, U75 terminal through C13Ground, U7Is connected with a-12V power supply, U7Is connected to a +12V power supply.
6. The device according to claim 5, wherein the device is adapted for on-line monitoring of internal resistance of battery for multiple battery types, and comprises: the first phase-locked amplifier circuit (7) includes a resistor R19、R20、R21、R22、R23、R24、R25And phase-locked amplifier AD630 chip U8(ii) a Wherein, U81 terminal and 16 terminals and U77 terminal of U83 terminal through R19Connected to a-12V power supply, U84 terminal of (2) via R20Connected to a-12V power supply, U85 terminal through R21Connected to a-12V power supply, U86 terminal through R22Connected to a-12V power supply, U8Is connected with a-12V power supply, U89 terminal and T1Is connected to drain terminal d of U810 terminal of U8Is connected with a +12V power supply, U814 terminal through R25Ground, U8Through R to the 15 terminal24And U8Is connected to terminal 13, U8Through R to the 15 terminal23And U8Are connected to 16 terminals of U8And the 13 terminal of the signal output terminal is connected with an A/D sampling output terminal in the ARM singlechip (12).
7. The device according to claim 2, wherein the device is adapted for on-line monitoring of internal resistance of battery for multiple battery types, and comprises: the second pre-amplifier circuit (8) comprises a capacitor C14、C15Resistance R26、R27、R28And amplifier AD620 chip U9(ii) a Wherein, U91 terminal through R28And U9Is connected to the 8 terminals of U 92 terminal through C14Connected to the 1 end of the precision constant value resistor (3), U92 terminal through R26Ground, U93 terminal through C15Connected to the 2-terminal of a precision constant value resistor (3), U93 terminal through R27Ground, U9Is connected with a-12V power supply, U9Is connected with a +12V power supply, U9The 5 terminal of (1) is grounded.
8. The device according to claim 5, wherein the device is adapted for on-line monitoring of internal resistance of battery for multiple battery types, and comprises: the second filter circuit (9) comprises a resistor R29、R30、R31、R32Capacitor C16、C17、C18、C19And an amplifier Lm353 chip U10、U11、U12(ii) a Wherein U is105 terminal through C17、C16And U96 of the terminal is connected with U105 terminal through C17、R29And U10Is connected with the 7 terminal, U105 terminal through R30Ground, U10Is connected with a-12V power supply, U10Is connected with a +12V power supply, U113 terminal and U107 terminal of U11Is connected with a-12V power supply, U11Is connected with a +12V power supply, U112 terminal and U111 terminal through R31、R32And U75 of the terminal is connected with U125 terminal through R32、C19And U12Is connected with the 7 terminal, U125 terminal through C19Ground, U12Is connected with a-12V power supply, U12Is connected to a +12V power supply.
9. The device according to claim 2, wherein the device is adapted for on-line monitoring of internal resistance of battery for multiple battery types, and comprises: the second phase-locked amplifying circuit (10) includes a resistor R 33、R34、R35、R36、R37、R38、R39And phase-locked amplifier AD630 chip U13(ii) a Wherein, U131 terminal and 16 terminals and U127 terminal of U133 terminal through R33Connected to a-12V power supply, U134 terminal of (2) via R34Connected to a-12V power supply, U135 terminal through R35Connected to a-12V power supply, U136 terminal through R36Connected to a-12V power supply, U13Is connected with a-12V power supply, U139 terminal and T1Is connected to drain terminal d of U1310 terminal of U1311 terminal and+12V power connection, U1314 terminal through R39Ground, U13Through R to the 15 terminal38And U13Is connected to terminal 13, U13Through R to the 15 terminal37And U13Are connected to 16 terminals of U13And the 13 terminal of the signal output terminal is connected with an A/D sampling output terminal in the ARM singlechip (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521063665.3U CN205353210U (en) | 2015-12-17 | 2015-12-17 | It is applicable in internal resistance of cell on -line monitoring device of multiple battery type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521063665.3U CN205353210U (en) | 2015-12-17 | 2015-12-17 | It is applicable in internal resistance of cell on -line monitoring device of multiple battery type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205353210U true CN205353210U (en) | 2016-06-29 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954592A (en) * | 2016-07-18 | 2016-09-21 | 天津金星奥宇科技有限公司 | Power battery pack internal resistance measurement system |
| CN107782969A (en) * | 2016-08-26 | 2018-03-09 | 江苏银佳电子设备有限公司 | A kind of device and its measuring method for being used to accurately measure milliohm level accumulator internal resistance |
| CN109444759A (en) * | 2018-12-21 | 2019-03-08 | 成都前锋电子仪器有限责任公司 | A kind of accumulator internal resistance measuring system |
| CN109802152A (en) * | 2019-02-20 | 2019-05-24 | 广西睿奕新能源股份有限公司 | Monitor the circuit structure of lithium disposable battery capacity |
| CN110441705A (en) * | 2019-08-20 | 2019-11-12 | 广州供电局有限公司 | Battery impedance test device and method |
| CN110441704A (en) * | 2019-07-23 | 2019-11-12 | 广州供电局有限公司 | Battery detection circuit |
| CN112909361A (en) * | 2018-10-16 | 2021-06-04 | 宁德时代新能源科技股份有限公司 | Cell voltage correction method, device, equipment and medium |
-
2015
- 2015-12-17 CN CN201521063665.3U patent/CN205353210U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954592A (en) * | 2016-07-18 | 2016-09-21 | 天津金星奥宇科技有限公司 | Power battery pack internal resistance measurement system |
| CN107782969A (en) * | 2016-08-26 | 2018-03-09 | 江苏银佳电子设备有限公司 | A kind of device and its measuring method for being used to accurately measure milliohm level accumulator internal resistance |
| CN112909361A (en) * | 2018-10-16 | 2021-06-04 | 宁德时代新能源科技股份有限公司 | Cell voltage correction method, device, equipment and medium |
| CN109444759A (en) * | 2018-12-21 | 2019-03-08 | 成都前锋电子仪器有限责任公司 | A kind of accumulator internal resistance measuring system |
| CN109802152A (en) * | 2019-02-20 | 2019-05-24 | 广西睿奕新能源股份有限公司 | Monitor the circuit structure of lithium disposable battery capacity |
| CN109802152B (en) * | 2019-02-20 | 2022-04-05 | 广西睿奕新能源股份有限公司 | Application of circuit structure for monitoring capacity of lithium disposable battery |
| CN110441704A (en) * | 2019-07-23 | 2019-11-12 | 广州供电局有限公司 | Battery detection circuit |
| CN110441705A (en) * | 2019-08-20 | 2019-11-12 | 广州供电局有限公司 | Battery impedance test device and method |
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