CN202649436U - Battery power sensing control device - Google Patents
Battery power sensing control device Download PDFInfo
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- CN202649436U CN202649436U CN 201220228260 CN201220228260U CN202649436U CN 202649436 U CN202649436 U CN 202649436U CN 201220228260 CN201220228260 CN 201220228260 CN 201220228260 U CN201220228260 U CN 201220228260U CN 202649436 U CN202649436 U CN 202649436U
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Abstract
The utility model discloses a battery power sensing control device, which comprises a voltage sampling circuit, a linear optical coupling isolation module and a power calculation module. The voltage sampling circuit samples the voltage of a battery pack to obtain a sampling voltage, the linear optical coupling isolation module obtains an isolation sampling voltage linearly proportional to and isolated from the sampling voltage according to the sampling voltage obtained by the voltage sampling circuit, and the power calculation module estimates the battery power value according to the isolated sampling voltage. The interference is reduced or even eliminated due to the adoption of the isolation measure.
Description
[technical field]
The utility model relates to a kind of circuit field, relates in particular to a kind of battery electric quantity sensing and controlling device.
[background technology]
At present, because the energy-saving and environmental protection of electric automobile and electric bicycle, they have been used in people's the production and life widely.For the battery to electric vehicle manages, need to estimate accurately the battery electric quantity (State of charge is called for short SOC) of described battery.
Yet existing battery electric quantity detection scheme is not generally isolated when electric weight is detected, so isolation performance is bad, disturbs larger.In addition, it is inaccurate to detect the battery capacity indication that obtains, and particularly electric vehicle is in the situation of variable working condition, and concussion and readjustment phenomenon can appear in its battery capacity indication.
Therefore, be necessary to propose a kind of improved battery electric quantity sensing and controlling device and overcome the problems referred to above.
[utility model content]
The purpose of this utility model is to provide a kind of battery electric quantity sensing and controlling device, and it can reduce to disturb, so that accurately charge value to be provided.
To achieve these goals, the utility model provides a kind of battery electric quantity sensing and controlling device, and it comprises voltage sampling circuit, linear optical coupling isolation module and electric weight computing module.Described voltage sampling circuit is sampled to the voltage of electric battery and is obtained sampled voltage, the sampled voltage that described linear optical coupling isolation module obtains according to voltage sampling circuit obtains isolation post-sampling voltage linear proportional with described sampled voltage and that mutually isolate with described sampled voltage, and the sampled voltage of described electric weight computing module after according to isolation estimated the battery electric quantity value.
Further, described battery electric quantity sensing and controlling device also includes the first output circuit and the second output circuit, the battery electric quantity value output analog control signal that described the first output circuit calculates according to described electric weight computing module, the battery electric quantity value output digital controlled signal that described the second output circuit calculates according to described electric weight computing module.
Further, described the first output circuit comprises resistance R 5, wave filter, following device and output matching circuit, the output terminal of described electric weight computing module is connected to described wave filter via described resistance R 5, described following device comprises operational amplifier, the normal phase input end of this operational amplifier connects the output terminal of described wave filter, its its output terminal of anti-phase input termination, described output matching circuit comprises output terminal and the resistance R between the ground 21 and the capacitor C 28 that is connected on the operational amplifier in the described following device, and the intermediate node between resistance R 21 and the capacitor C 28 is as the output terminal of described the first output circuit.Wherein, described wave filter is pi type filter.
Further, described the second output circuit comprises resistance R 3, resistance R 2 and digital optical coupling isolator, the output terminal of described electric weight computing module is connected to the input end of digital optical coupling isolator via described resistance R 3, the output terminal of described digital optical coupling isolator links to each other with power supply via resistance R 2, and the output terminal of described digital optical coupling isolator is exported described digital controlled signal.
Further, described voltage sampling circuit comprises divider resistance R11 and the R22 that is connected between cell voltage and the ground, and wherein divider resistance R22 is adjustable resistance.
Further, the sampled voltage after the isolation of described electric weight calculating module synthesis, interconversion rate and the time of the sampled voltage after the isolation are estimated the battery electric quantity value.
Further, described linear optical coupling isolation module comprises that first follows circuit, the first match circuit, light-coupled isolation unit, the second match circuit and second and follow circuit.The first input end of following circuit receives the sampled voltage from voltage sampling circuit, the first output terminal of following circuit links to each other with the input end of the first match circuit, the output terminal of the first match circuit links to each other with the input end of light-coupled isolation unit, the output terminal of light-coupled isolation unit links to each other with the input end of the second match circuit, the output terminal of the second match circuit links to each other with the second input end of following circuit, the sampled voltage after the second output terminal output of following circuit is isolated.First follows circuit and second follows circuit receiver voltage signal, and so that the voltage of its input end of voltage follower of its output terminal, the first match circuit and the second match circuit carry out impedance matching in the front-end and back-end of described light-coupled isolation unit respectively, described light-coupled isolation unit is converted to light signal with the voltage signal of receiving, again this light signal is converted to afterwards the voltage signal after the isolation, so that the voltage signal of the voltage signal that the light-coupled isolation unit receives and its output is mutually isolated and be linearly proportional.
Further, described battery electric quantity sensing and controlling device also comprises the isolation voltage module, this isolation voltage module provides two groups of power supplys of mutual isolation, wherein first follow one group of Power supply that circuit and the first match circuit are provided by described isolation voltage module, the second match circuit and second is followed another group Power supply that circuit is provided by described isolation voltage module.
Further, described first follows circuit comprises diode D1 and the first operational amplifier, the output terminal of the described voltage sampling circuit of anodic bonding of described diode D1, the negative electrode of described diode D1 connects the normal phase input end of the first operational amplifier, its negative-phase input connects the output terminal of the first operational amplifier, and the output terminal of described the first operational amplifier is described first to follow the output terminal of circuit.The first match circuit comprises resistance R 10, the second operational amplifier, resistance R 8, capacitor C 8, the output terminal of circuit is followed in the one end connection first of described resistance R 10, the other end connects the negative-phase input of the second operational amplifier, the positive input end grounding of the second operational amplifier, capacitor C 8 is connected between the negative-phase input and output terminal of the second operational amplifier, one end of described resistance R 8 connects the output terminal of the second operational amplifier, the other end of described resistance R 8 links to each other with an input end of described light-coupled isolation unit, the negative-phase input of the second operational amplifier links to each other with another input end of described light-coupled isolation unit, the second match circuit comprises the 3rd operational amplifier, capacitor C 9, resistance R 9 and adjustable resistance RW2, the normal phase input end of described the 3rd operational amplifier connects output terminal and the ground connection of described light-coupled isolation unit, described inverting input connects another output terminal of described light-coupled isolation unit, capacitor C 9 is connected between the negative-phase input and output terminal of the 3rd operational amplifier, described resistance R 9 and adjustable resistance RW2 are connected between the negative-phase input and output terminal of the 3rd operational amplifier, the output terminal of described the 3rd operational amplifier is the output terminal of the second match circuit. described second follows circuit comprises four-operational amplifier, resistance R 20, voltage stabilizing diode D2 and capacitor C 10, the normal phase input end of four-operational amplifier connects the output terminal of described the second match circuit, its inverting input connects its output terminal, the output terminal of this four-operational amplifier links to each other with an end of described resistance R 20, the other end AN0 of described resistance is the output terminal of described linear optical coupling isolation module, and described voltage stabilizing diode D2 and capacitor C 10 are parallel between the output terminal and ground of described linear optical coupling isolation module.
Compared with prior art, in the battery electric quantity sensing and controlling device in the utility model, adopted the linear optical coupling isolation module branch pressure voltage that sampling obtains to bleeder circuit to carry out inputing in the described electric weight computing module behind the linear isolation, owing to taked quarantine measures, thereby reduce even eliminated interference.In addition, described electric weight computing module calculates the electric weight of battery according to the combined factors such as sampled voltage, voltage transformation rate and time after isolating, thereby can obtain more accurate real charge value, can alleviate or avoid vibration or the readjustment phenomenon of battery capacity indication.
[description of drawings]
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.Wherein:
Fig. 1 is the battery electric quantity sensing and controlling device structured flowchart in one embodiment in the utility model;
Fig. 2 is the voltage sampling circuit circuit diagram in one embodiment among Fig. 1;
Fig. 3 is the linear optical coupling isolation module structural representation in one embodiment among Fig. 1;
Fig. 4 is the linear optical coupling isolation module circuit diagram in one embodiment among Fig. 3;
Fig. 5 is the first output circuit circuit diagram in one embodiment among Fig. 1; With
Fig. 6 is the second output circuit circuit diagram in one embodiment among Fig. 1.
[embodiment]
Detailed description of the present utility model is mainly come the running of direct or indirect simulation technical solutions of the utility model by program, step, logical block, process or other symbolistic descriptions.Be the thorough the utility model of understanding, in ensuing description, stated a lot of specific detail.And when not having these specific detail, the utility model then may still can be realized.Affiliated those of skill in the art use herein these descriptions and statement essential to the work that the others skilled in the art in the affiliated field effectively introduce them.In other words, be the purpose of this utility model of avoiding confusion, because the easily understanding of the method for knowing and program, so they are not described in detail.
Alleged " embodiment " or " embodiment " refer to be contained in special characteristic, structure or the characteristic at least one implementation of the utility model herein.Different local in this manual " in one embodiment " that occur not are all to refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiment optionally.
Fig. 1 is battery electric quantity sensing and controlling device 100 structured flowchart in one embodiment in the utility model.See also shown in Figure 1ly, described battery electric quantity sensing and controlling device 100 comprises voltage sampling circuit 110, linear optical coupling isolation module 120, isolation voltage module 130 and electric weight computing module 140.
The voltage Vbat of 100 couples of electric battery BAT of described voltage sampling circuit samples and obtains sampled voltage Vs, and this sampled voltage can reflect the size of described cell voltage Vbat.Fig. 2 shows a kind of implementation of described voltage sampling circuit 100, in this implementation, divider resistance R11 and R22 that employing is connected between cell voltage Vbat and the ground realize voltage sample, wherein divider resistance R22 is adjustable resistance, can carry out the adjustment of dividing potential drop ratio like this, to carry out suitable coupling with subsequent conditioning circuit.The resistance precision of this adjustable resistance R22 is 1%, like this can be so that sampled voltage Vs has higher precision.
Described linear optical coupling isolation module 120 can obtain isolation post-sampling voltage VS linear proportional with described sampled voltage Vs and that mutually isolate with described sampled voltage Vs according to sampled voltage Vs.Described linear optical coupling isolation module 120 is converted to light signal with described sampled voltage Vs, again this light signal is converted to afterwards the sampled voltage VS after the isolation, sampled voltage Vs before sampled voltage VS after the isolation and the isolation is linearly proportional, realize like this light-coupled isolation, avoided the interference of front end signal to be passed to back end signal.
Described isolation voltage module 130 can provide two groups of power supplys of mutual isolation, be labeled as respectively VCC and GND, and VDD and GND, mutually two groups of power supplys of isolation are respectively circuit before the isolation in the described linear optical coupling isolation module 120 and the circuit after the isolation is powered, realized like this isolation of high pressure and low pressure, the interference of also having avoided the noise of power supply to bring.
Described electric weight computing module 140 is estimated battery electric quantity (SOC) value according to the sampled voltage VS after isolating.In one embodiment, the factors such as the interconversion rate of sampled voltage VS, the sampled voltage VS after the isolation after the 140 comprehensive isolation of described electric weight computing module and time are estimated the battery electric quantity value, can avoid or reduce like this and to get the oscillatory occurences of the battery electric quantity value that obtains.
In a preferred embodiment, described battery electric quantity sensing and controlling device 100 also comprises the first output circuit 150 and the second output circuit 160.Described the first output circuit 150 is convenient to carry out Signal Matching and transmission with all kinds of instrument according to the battery electric quantity value output analog control signal that described electric weight computing module 140 calculates.The battery electric quantity value output digital controlled signal that described the second output circuit 160 calculates according to described electric weight computing module 140 is to realize the control to outside electric equipment.Like this, the existing analog control signal of output controlled quentity controlled variable has again digital controlled signal, can control miscellaneous part on the vehicle according to these control signals, realizes the car load optimised power consumption.Can realize management to the car load electrical equipment according to battery electric quantity, effectively realize the electric weight control strategy of car load, improve the utilization ratio of energy.
Fig. 5 shows described the first output circuit 150 part or all of structure in one implementation, and in this implementation, described the first output circuit 150 comprises resistance R 5, wave filter 151, following device 152 and output matching circuit 153.The output terminal of described electric weight computing module 140 is connected to described wave filter 151 via a resistance R 5.Described wave filter 151 can carry out filtering to input signal, thereby eliminates some interference or noise.In this embodiment, described wave filter 151 is pi type filter, and it comprises two capacitor C 11 and C12 and resistance R 6.Described following device 152 comprises operational amplifier, the normal phase input end of this operational amplifier connects the output terminal of described wave filter 151, its its output terminal of anti-phase input termination, it can be so that the voltage of its input end of voltage follower of its output terminal, and this following device 152 can strengthen the driving force of the voltage of its output terminal.Described output matching circuit 153 comprises output terminal and the resistance R between the ground 21 and the capacitor C 28 that is connected on the operational amplifier in the described following device, intermediate node between resistance R 21 and the capacitor C 28 is the output terminal DAC1 of described the first output circuit, and it can carry out impedance matching to output.Described output matching circuit 153 outputs 0 ~ 5V analog control signal is convenient to carry out Signal Matching and transmission with all kinds of instrument.
Fig. 6 shows described the second output circuit 160 part or all of structure in one implementation, and in this implementation, described the second output circuit 160 comprises resistance R 3, resistance R 2 and digital optical coupling isolator 161.The output terminal of described electric weight computing module 140 is connected to the input end of digital optical coupling isolator 161 via described resistance R 3, the output terminal of described digital optical coupling isolator 161 links to each other with power supply VCC via resistance R 2, the output terminal output of described digital optical coupling isolator 161 realizes the control to outside electrical equipment through the digital controlled signal of isolation.In one embodiment, described electric weight computing module 140 can obtain digital controlled signal that outside electric equipment is controlled according to the battery electric quantity value that calculates, and exports this digital controlled signal to second output circuit 160 through output terminal more afterwards.For instance, if need to control outside electric air-conditioning, can carry out width modulation according to the battery electric quantity value that calculates first and obtain pulse-width signal (PWM), export pulse-width signal to second output circuit 160 by its output terminal afterwards.
Fig. 3 is linear optical coupling isolation module 120 structural representation in one embodiment among Fig. 1.Described linear optical coupling isolation module 120 comprises that first follows circuit 121, the first match circuit 122, light-coupled isolation unit 123, the second match circuit 124 and second and follow circuit 125.
The first input end of following circuit 121 links to each other with the output terminal of described voltage sampling circuit 110, receives the sampled voltage Vs from voltage sampling circuit 110.The first output terminal of following circuit 121 links to each other with the input end of the first match circuit 122, the output terminal of the first match circuit 122 links to each other with the input end of light-coupled isolation unit 123, the output terminal of light-coupled isolation unit 123 links to each other with the input end of the second match circuit 124, the output terminal of the second match circuit 124 links to each other with the second input end of following circuit 122, the sampled voltage VS after the second output terminal output of following circuit 122 is isolated.
Described first follows circuit 121 and second follows circuit 125 receiver voltage signals, and can be so that the voltage of its input end of voltage follower of its output terminal, strengthen the driving force of the voltage of its output terminal with this, wherein said first follows the sampled voltage Vs that circuit 121 receives from voltage sampling circuit 110.The first match circuit 122 and the second match circuit 124 carry out impedance matching in the front-end and back-end of described light-coupled isolation unit 123 respectively, described light-coupled isolation unit 123 is converted to light signal with the voltage signal of receiving, again this light signal is converted to afterwards the voltage signal after the isolation, so that the voltage signal of the voltage signal that the light-coupled isolation unit receives and its output is mutually isolated and is linearly proportional, realize like this light-coupled isolation, avoided the interference of front end signal to be passed to back end signal.
Wherein first follow one group of Power supply that circuit 121 and the first match circuit 122 are provided by described isolation voltage module 130, such as VDD and GND, the second match circuit 124 and second is followed another group Power supply that circuit 125 is provided by described isolation voltage module 130, such as VCC and GND, realized like this isolation of high pressure and low pressure, the interference of also having avoided the noise of power supply to bring.
Fig. 4 is the linear optical coupling isolation module 120 circuit signal intention in one embodiment among Fig. 3.
Described first follows circuit 121 comprises diode D1 and the first operational amplifier, the output terminal of the described voltage sampling circuit 110 of the anodic bonding of described diode D1, the negative electrode of described diode D1 connects the normal phase input end of the first operational amplifier, its negative-phase input connects the output terminal of the first operational amplifier, and the output terminal of described the first operational amplifier is described first to follow the output terminal of circuit 121.
The first match circuit 122 comprises resistance R 10, the second operational amplifier, resistance R 8, capacitor C 8.The output terminal of circuit 121 is followed in the one end connection first of described resistance R 10, the other end connects the negative-phase input of the second operational amplifier, the positive input end grounding of the second operational amplifier, capacitor C 8 is connected between the negative-phase input and output terminal of the second operational amplifier, one end of described resistance R 8 connects the output terminal of the second operational amplifier, the other end of described resistance R 8 links to each other with an input end of described light-coupled isolation unit 123, and the negative-phase input of the second operational amplifier links to each other with another input end of described light-coupled isolation unit 123.
The second match circuit 124 comprises the 3rd operational amplifier, capacitor C 9, resistance R 9 and adjustable resistance RW2.The normal phase input end of described the 3rd operational amplifier connects output terminal and the ground connection of described light-coupled isolation unit 123, and described inverting input connects another output terminal of described light-coupled isolation unit 123.Capacitor C 9 is connected between the negative-phase input and output terminal of the 3rd operational amplifier, described resistance R 9 and adjustable resistance RW2 are connected between the negative-phase input and output terminal of the 3rd operational amplifier, and the output terminal of described the 3rd operational amplifier is the output terminal of the second match circuit.Linearly proportional by the sampled voltage Vs that the resistance value of adjusting described adjustable resistance RW2 can be regulated before sampled voltage VS and the isolation after the isolation.
Described second follows circuit 125 comprises four-operational amplifier, resistance R 20, voltage stabilizing diode D2 and capacitor C 10.The normal phase input end of four-operational amplifier connects the output terminal of described the second match circuit 124, its inverting input connects its output terminal, the output terminal of this four-operational amplifier is connected to the output terminals A N0 of described linear optical coupling isolation module 120 via resistance R 20, and described voltage stabilizing diode D2 and capacitor C 10 are parallel between the output terminals A N0 and ground of described linear optical coupling isolation module 120.
Need to prove that the first operational amplifier and the second operational amplifier are by power vd D and GND power supply, the second operational amplifier and four-operational amplifier are by power supply VCC and GND power supply.
Above-mentioned explanation has fully disclosed embodiment of the present utility model.It is pointed out that and be familiar with the scope that any change that the person skilled in art does embodiment of the present utility model does not all break away from claims of the present utility model.Correspondingly, the scope of claim of the present utility model also is not limited only to previous embodiment.
Claims (10)
1. a battery electric quantity sensing and controlling device is characterized in that, it comprises voltage sampling circuit, linear optical coupling isolation module and electric weight computing module,
Described voltage sampling circuit is sampled to the voltage of electric battery and is obtained sampled voltage, the sampled voltage that described linear optical coupling isolation module obtains according to voltage sampling circuit obtains isolation post-sampling voltage linear proportional with described sampled voltage and that mutually isolate with described sampled voltage, and the sampled voltage of described electric weight computing module after according to isolation estimated the battery electric quantity value.
2. battery electric quantity sensing and controlling device according to claim 1, it is characterized in that: it also includes the first output circuit and the second output circuit, the battery electric quantity value output analog control signal that described the first output circuit calculates according to described electric weight computing module, the battery electric quantity value output digital controlled signal that described the second output circuit calculates according to described electric weight computing module.
3. battery electric quantity sensing and controlling device according to claim 2, it is characterized in that: described the first output circuit comprises resistance R 5, wave filter, following device and output matching circuit, the output terminal of described electric weight computing module is connected to described wave filter via described resistance R 5, described following device comprises operational amplifier, the normal phase input end of this operational amplifier connects the output terminal of described wave filter, its its output terminal of anti-phase input termination, described output matching circuit comprises output terminal and the resistance R between the ground 21 and the capacitor C 28 that is connected on the operational amplifier in the described following device, and the intermediate node between resistance R 21 and the capacitor C 28 is as the output terminal of described the first output circuit.
4. battery electric quantity sensing and controlling device according to claim 3, it is characterized in that: described wave filter is pi type filter.
5. battery electric quantity sensing and controlling device according to claim 2, it is characterized in that: described the second output circuit comprises resistance R 3, resistance R 2 and digital optical coupling isolator, the output terminal of described electric weight computing module is connected to the input end of digital optical coupling isolator via described resistance R 3, the output terminal of described digital optical coupling isolator links to each other with power supply via resistance R 2, and the output terminal of described digital optical coupling isolator is exported described digital controlled signal.
6. battery electric quantity sensing and controlling device according to claim 1, it is characterized in that: described voltage sampling circuit comprises divider resistance R11 and the R22 that is connected between cell voltage and the ground, wherein divider resistance R22 is adjustable resistance.
7. battery electric quantity sensing and controlling device according to claim 1 is characterized in that: described electric weight calculates the sampled voltage after the module synthesis isolation, interconversion rate and the time of the sampled voltage after the isolation and estimates the battery electric quantity value.
8. arbitrary described battery electric quantity sensing and controlling device according to claim 1-7 is characterized in that: described linear optical coupling isolation module comprises that first follows circuit, the first match circuit, light-coupled isolation unit, the second match circuit and second and follow circuit,
The first input end of following circuit receives the sampled voltage from voltage sampling circuit, the first output terminal of following circuit links to each other with the input end of the first match circuit, the output terminal of the first match circuit links to each other with the input end of light-coupled isolation unit, the output terminal of light-coupled isolation unit links to each other with the input end of the second match circuit, the output terminal of the second match circuit links to each other with the second input end of following circuit, sampled voltage after the second output terminal output of following circuit is isolated
First follows circuit and second follows circuit receiver voltage signal, and so that the voltage of its input end of voltage follower of its output terminal, the first match circuit and the second match circuit carry out impedance matching in the front-end and back-end of described light-coupled isolation unit respectively, described light-coupled isolation unit is converted to light signal with the voltage signal of receiving, again this light signal is converted to afterwards the voltage signal after the isolation, so that the voltage signal of the voltage signal that the light-coupled isolation unit receives and its output is mutually isolated and be linearly proportional.
9. battery electric quantity sensing and controlling device according to claim 8, it is characterized in that: it also comprises the isolation voltage module, this isolation voltage module provides two groups of power supplys of mutual isolation, wherein first follow one group of Power supply that circuit and the first match circuit are provided by described isolation voltage module, the second match circuit and second is followed another group Power supply that circuit is provided by described isolation voltage module.
10. battery electric quantity sensing and controlling device according to claim 8, it is characterized in that: described first follows circuit comprises diode D1 and the first operational amplifier, the output terminal of the described voltage sampling circuit of anodic bonding of described diode D1, the negative electrode of described diode D1 connects the normal phase input end of the first operational amplifier, its negative-phase input connects the output terminal of the first operational amplifier, the output terminal of described the first operational amplifier is described first to follow the output terminal of circuit
The first match circuit comprises resistance R 10, the second operational amplifier, resistance R 8, capacitor C 8, the output terminal of circuit is followed in the one end connection first of described resistance R 10, the other end connects the negative-phase input of the second operational amplifier, the positive input end grounding of the second operational amplifier, capacitor C 8 is connected between the negative-phase input and output terminal of the second operational amplifier, one end of described resistance R 8 connects the output terminal of the second operational amplifier, the other end of described resistance R 8 links to each other with an input end of described light-coupled isolation unit, the negative-phase input of the second operational amplifier links to each other with another input end of described light-coupled isolation unit
The second match circuit comprises the 3rd operational amplifier, capacitor C 9, resistance R 9 and adjustable resistance RW2, the normal phase input end of described the 3rd operational amplifier connects output terminal and the ground connection of described light-coupled isolation unit, described inverting input connects another output terminal of described light-coupled isolation unit, capacitor C 9 is connected between the negative-phase input and output terminal of the 3rd operational amplifier, described resistance R 9 and adjustable resistance RW2 are connected between the negative-phase input and output terminal of the 3rd operational amplifier, the output terminal of described the 3rd operational amplifier is the output terminal of the second match circuit
Described second follows circuit comprises four-operational amplifier, resistance R 20, voltage stabilizing diode D2 and capacitor C 10, the normal phase input end of four-operational amplifier connects the output terminal of described the second match circuit, its inverting input connects its output terminal, the output terminal of this four-operational amplifier links to each other with an end of described resistance R 20, the other end AN0 of described resistance is the output terminal of described linear optical coupling isolation module, and described voltage stabilizing diode D2 and capacitor C 10 are parallel between the output terminal and ground of described linear optical coupling isolation module.
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| CN 201220228260 CN202649436U (en) | 2012-05-18 | 2012-05-18 | Battery power sensing control device |
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| CN 201220228260 CN202649436U (en) | 2012-05-18 | 2012-05-18 | Battery power sensing control device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767484A (en) * | 2015-04-03 | 2015-07-08 | 广西比迪光电科技工程有限责任公司 | Device for online testing voltage of solar cell module |
| CN105223516A (en) * | 2015-10-20 | 2016-01-06 | 卧龙电气集团股份有限公司 | A kind of electric quantity of lithium battery analog voltage output unit |
| CN106841747A (en) * | 2017-01-24 | 2017-06-13 | 爱普科斯电子元器件(珠海保税区)有限公司 | Dash current tests residual voltage pressure tester and method |
| CN107064605A (en) * | 2017-06-08 | 2017-08-18 | 广东志高暖通设备股份有限公司 | A kind of voltage detecting circuit and air-conditioning system with buffer action |
-
2012
- 2012-05-18 CN CN 201220228260 patent/CN202649436U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767484A (en) * | 2015-04-03 | 2015-07-08 | 广西比迪光电科技工程有限责任公司 | Device for online testing voltage of solar cell module |
| CN105223516A (en) * | 2015-10-20 | 2016-01-06 | 卧龙电气集团股份有限公司 | A kind of electric quantity of lithium battery analog voltage output unit |
| CN105223516B (en) * | 2015-10-20 | 2018-05-22 | 卧龙电气集团股份有限公司 | A kind of electric quantity of lithium battery analog voltage output device |
| CN106841747A (en) * | 2017-01-24 | 2017-06-13 | 爱普科斯电子元器件(珠海保税区)有限公司 | Dash current tests residual voltage pressure tester and method |
| CN107064605A (en) * | 2017-06-08 | 2017-08-18 | 广东志高暖通设备股份有限公司 | A kind of voltage detecting circuit and air-conditioning system with buffer action |
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Effective date of registration: 20180212 Address after: 224000 Yancheng economic and Technological Development Zone, Yancheng City, Jiangsu Province, hope No. 43 Road South Road Co-patentee after: Jiangsu Xinxin energy passenger car Co., Ltd. Patentee after: Jiangsu Aoxin New Energy Automobile Co., Ltd. Co-patentee after: Jiangsu Green New Energy Vehicle Co. Ltd. Address before: 224007 South Road South Road, Yancheng City Development Zone, Jiangsu Province, No. 43 Patentee before: Jiangsu Aoxin New Energy Automobile Co., Ltd. |
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Effective date of registration: 20191118 Address after: 224000 No. 69, East Ring Road, Yancheng City economic and Technological Development Zone, Jiangsu Co-patentee after: Jiangsu Xinxin energy passenger car Co., Ltd. Patentee after: New Energy Automobile Research Institute Co Ltd Co-patentee after: Jiangsu Aoxin New Energy Automobile Co., Ltd. Address before: 224000 Yancheng economic and Technological Development Zone, Yancheng City, Jiangsu Province, hope No. 43 Road South Road Co-patentee before: Jiangsu Xinxin energy passenger car Co., Ltd. Patentee before: Jiangsu Aoxin New Energy Automobile Co., Ltd. Co-patentee before: Jiangsu Green New Energy Vehicle Co. Ltd. |
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Granted publication date: 20130102 |
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