CN204832336U - A it is novel at line voltage monitoring devices for storage battery - Google Patents
A it is novel at line voltage monitoring devices for storage battery Download PDFInfo
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- CN204832336U CN204832336U CN201520377519.1U CN201520377519U CN204832336U CN 204832336 U CN204832336 U CN 204832336U CN 201520377519 U CN201520377519 U CN 201520377519U CN 204832336 U CN204832336 U CN 204832336U
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Abstract
The utility model discloses an it is novel at line voltage monitoring devices for storage battery, include: voltage sampling circuit according to the proportion of predetermineeing obtain with direct current storage battery in every output voltage proportional ratio voltage that holds cell, voltage stabilizing circuit supplies with voltage frequency converting circuit after with every output voltage steady voltage of holding cell, voltage frequency converting circuit becomes frequency signal with proportion voltage conversion to transmit to buffer circuit, buffer circuit receives frequency signal to export the host computer to, the host computer is monitored frequency signal conversion voltage signal according to same proportion. The utility model discloses the circuit is simple reliable to measure the part at battery voltage and avoid the error using linear light buffer circuit and bring, and wholely need not be able to bear or endure several at line voltage monitoring devices and lie prostrate the highly compressed amplifier of common modes, greatly simplified the circuit, reduced manufacturing cost, improved monitoring devices's reliability, be applicable to and monitor various storage battery.
Description
Technical field
The utility model relates to battery pack field, and particularly relate to a kind of novel on-Line Voltage monitoring device for battery pack, the utility model is applicable to monitor various battery pack.
Background technology
Battery pack has a wide range of applications in real work, such as: the energy storage of mains supply system, fork truck, underground transportation vehicle, wind light generation, etc.But the inefficacy of any one the unit accumulator in battery pack all will affect the overall work of battery pack, even cause the inefficacy of whole electric power system.Thus, any one battery pack is all configured with a set of supervisory system, monitors the voltage of each element cell in battery pack, internal resistance and temperature etc.
But, relative supervisory system " ", the voltage of each unit accumulator is all not identical, reaches as high as hundreds of volt, therefore, carries out monitoring have difficulties and even threaten the voltage of each unit accumulator.
Utility model people is realizing in process of the present utility model, finds at least there is following shortcoming and defect in prior art:
In order to solve the problem, supervising device of the prior art have employed the amplifier that can stand up to a few hectovolt common mode high pressure, but amplifier in circuit some component failure time can produce chain reaction most probably, cause the damage of whole supervisory system.
In order to avoid catastrophic consequence and the reliability improving supervisory system, also been proposed in prior art and adopt the methods such as linear photoelectric isolation in battery voltage measuring part, but its corresponding consequence brought is: the linear isolation of linear photoelectric isolation or other kinds will make that voltage measurement accuracy is not high, front stage circuits needs power supply, increase considerably cost and the complicacy of circuit.
Utility model content
The utility model provides a kind of novel on-Line Voltage monitoring device for battery pack, and the utility model, not by under the impact of high common mode voltage, greatly simplifies circuit, reduces production cost, improve the reliability of monitoring device, described below:
A kind of novel on-Line Voltage monitoring device for battery pack, comprise: direct-flow storage battery group and host computer, described on-Line Voltage monitoring device also comprises: described on-Line Voltage monitoring device also comprises: the voltage sampling circuit, the mu balanced circuit that are electrically connected with each secondary battery unit in described direct-flow storage battery group respectively;
Described voltage sampling circuit is electrically connected voltage frequency conversioning circuit, buffer circuit and host computer successively;
Described mu balanced circuit supplies described voltage frequency conversioning circuit by after the output voltage voltage stabilizing of each secondary battery unit, as the supply voltage of described voltage frequency conversioning circuit;
Described voltage sampling circuit obtains the ratio-voltage proportional with each secondary battery unit output voltage, and described ratio-voltage obtains proportional frequency signal through described voltage frequency conversioning circuit, and transfers to described buffer circuit;
Described buffer circuit receives described frequency signal and exports described host computer to; Frequency signal is become voltage signal by same rate conversion and monitors the voltage signal of all secondary battery units by described host computer.
Wherein, described voltage frequency conversioning circuit comprises: the first resistance,
One end of described first resistance connects one end of the first electric capacity, the negative polarity end of the first operational amplifier respectively; The other end of described first electric capacity connects one end of the 3rd resistance, the output terminal of described first operational amplifier respectively; Ratio-voltage described in the positive polarity input termination of described first operational amplifier; The other end of described 3rd resistance connects positive pole, the function generator of diode respectively; Described function generator also connects the positive input of the second operational amplifier, and the output terminal of described second operational amplifier exports described frequency signal to described buffer circuit.
Preferably, the model of described function generator is 8038.
Another embodiment, described voltage frequency conversioning circuit comprises: voltage controlled oscillator,
Described voltage controlled oscillator connects described ratio-voltage, and described voltage controlled oscillator exports described frequency signal to described buffer circuit.
Further, the model of described voltage controlled oscillator is CD4046.
Another embodiment, the model of described voltage controlled oscillator is NE566V.
Further, described buffer circuit is optoisolator, magnetic coupling isolator or capacitive coupling digital isolator.
Preferably, described optoisolator is the optoisolator of 6N138 or 4N25 model;
Described magnetic coupling isolator is the magnetic coupling isolator of ADUM1200 model;
Described capacitive coupling digital isolator is the capacitive coupling digital isolator of ISO7220 or ISO7221 model.
The beneficial effect of the technical scheme that the utility model provides is: the utility model gets ratio-voltage by voltage sampling circuit, voltage frequency conversioning circuit reception ratio-voltage is converted to frequency signal and exports buffer circuit to, host computer is transferred to by buffer circuit, frequency signal is become voltage signal by same rate conversion by host computer, achieves and monitors the on-Line Voltage of battery pack; The utility model circuit is simple and reliable, and in battery voltage measuring part, avoid using linear light buffer circuit, and whole on-Line Voltage monitoring device does not need the amplifier of resistance to a few hectovolt common mode high pressure, greatly simplifie circuit, reduce production cost, improve the reliability of monitoring device, be applicable to monitor various battery pack.
Accompanying drawing explanation
The structural representation of a kind of novel on-Line Voltage monitoring device for battery pack that Fig. 1 provides for embodiment 1;
The structural representation of a kind of novel on-Line Voltage monitoring device for battery pack that Fig. 2 provides for embodiment 2;
The structural representation of a kind of novel on-Line Voltage monitoring device for battery pack that Fig. 3 provides for embodiment 3;
The structural representation of a kind of novel on-Line Voltage monitoring device for battery pack that Fig. 4 provides for embodiment 4.
In accompanying drawing, the list of parts representated by each label is as follows:
1: direct-flow storage battery group; 2: voltage sampling circuit;
3: mu balanced circuit; 4: voltage frequency conversioning circuit;
5: buffer circuit; 6: host computer;
R1: the first resistance; R2: the second resistance;
R3: the three resistance; R4: the four resistance;
R5: the five resistance; R6: the six resistance;
R7: the seven resistance; R8: the eight resistance;
R9: the nine resistance; C1: the first electric capacity;
C2: the second electric capacity; C3: the three electric capacity;
D: diode; T1: triode;
A1: the first operational amplifier; A2: the second operational amplifier;
V1: the ratio-voltage of direct-flow storage battery group; F1: frequency signal.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below the utility model embodiment is described in further detail.
Embodiment 1
A kind of novel on-Line Voltage monitoring device for battery pack, see Fig. 1, this on-Line Voltage monitoring device comprises: direct-flow storage battery group 1, voltage sampling circuit 2, mu balanced circuit 3, voltage frequency conversioning circuit 4, buffer circuit 5 and host computer 6, each secondary battery unit in direct-flow storage battery group 1 is (as unit under test, the number of unit under test sets according to actual conditions) be electrically connected voltage sampling circuit 2 and mu balanced circuit 3 respectively, voltage sampling circuit 2 is electrically connected voltage frequency conversioning circuit 4, buffer circuit 5 and host computer 6 successively;
Mu balanced circuit 3 is using service voltage freq converting circuit after the output voltage voltage stabilizing of each secondary battery unit 2 (supply voltage as voltage frequency conversioning circuit 2); Voltage sampling circuit 2 obtains the ratio-voltage V1 proportional with each secondary battery unit output voltage according to preset ratio; Voltage frequency conversioning circuit 4 converts ratio-voltage V1 to frequency signal F1, and transfers to buffer circuit 5; Buffer circuit 5 receiving frequency signals F1 also transfers to host computer 6; Frequency signal is become voltage signal by same rate conversion by host computer 6, and monitors the voltage signal of all secondary battery units.
That is, frequency signal F1 is directly proportional to the ratio-voltage V1 of each secondary battery unit in direct-flow storage battery group 1.After host computer 6 receives frequency signal, frequency signal is become voltage signal by same rate conversion, host computer 6 is monitored the voltage of secondary battery unit each in direct-flow storage battery group 1, is controlled under in proportion.
During practical application, each secondary battery unit in direct-flow storage battery group 1 is all equipped with by voltage sampling circuit 2, mu balanced circuit 3, voltage frequency conversioning circuit 4, the circuit that buffer circuit 5 forms, host computer 6 is shared module, such as: see Fig. 1, direct-flow storage battery group 1 comprises 3 secondary battery units, each secondary battery unit is all equipped with by voltage sampling circuit 2, mu balanced circuit 3, voltage frequency conversioning circuit 4, (whole direct-flow storage battery group 1 needs 3 voltage sampling circuits 2 to the circuit that buffer circuit 5 forms, 3 mu balanced circuits 3, 3 voltage frequency conversioning circuits 4, 3 buffer circuits 5), 3 secondary battery units share a host computer 6 (whole direct-flow storage battery group 1 only needs 1 host computer 6).The interlock circuit that the utility model embodiment is equipped with for a secondary battery unit is described, and the outfit circuit of whole direct-flow storage battery group 1 repeats no more.
The utility model embodiment is in battery voltage measuring part, avoid using linear light buffer circuit, and whole on-Line Voltage monitoring device does not need the amplifier of resistance to a few hectovolt common mode high pressure, stable ratio-voltage is got by voltage sampling circuit, mu balanced circuit, voltage frequency conversioning circuit output frequency signal is to buffer circuit, this on-Line Voltage monitoring device improves the reliability of circuit, reduces production cost.
The model of the utility model embodiment to each device does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 2
A kind of novel on-Line Voltage monitoring device for battery pack, see Fig. 1 and Fig. 2, this embodiment 2 as different from Example 1 voltage frequency conversioning circuit 2 have employed the circuit shown in Fig. 2, voltage frequency conversioning circuit 4 is for being directly proportional output frequency signal F1 to the ratio-voltage V1 of input, this voltage frequency conversioning circuit 4 comprises: the first resistance R1
One end of first resistance R1 connects one end of the first electric capacity C1, the negative polarity end of the first operational amplifier A 1 respectively; The other end of the first electric capacity C1 connects one end of the 3rd resistance R3, the output terminal of the first operational amplifier A 1 respectively; The positive polarity input termination ratio-voltage V1 of the first operational amplifier A 1; The positive polarity input end of the first operational amplifier A 1 also connects the second resistance R2 simultaneously; The other end of the 3rd resistance R3 connects positive pole, the function generator of diode D respectively; Function generator also connects the positive input of the second operational amplifier A 2, and the negative input of the second operational amplifier A 2 connects output terminal, and the output terminal output frequency signal F1 of the second operational amplifier A 2 is to buffer circuit 5.
Wherein, the model of function generator is specially 8038, the other end of the 4th resistance R4 connects the 5th resistance R5 and the 6th resistance R6 successively, 6th resistance R6 connects the 7th resistance R7 successively and is connected in parallel the 9th resistance R9 with the 8th resistance R8 (head and the tail of each resistance are connected successively, and the utility model embodiment does not repeat this) the 8th resistance R8; The power supply of one end contiguous function generator of the 9th resistance R9, the other end connects the positive input of the second operational amplifier A 2; The effect of each pin of function generator 8038 and supporting circuit connect for conventionally known to one of skill in the art, and the utility model embodiment does not repeat this.
The present embodiment, by adopting the voltage frequency conversioning circuit 4 of designed, designed, makes frequency signal F1 be directly proportional to the ratio-voltage V1 of input.Can improve by this voltage frequency conversioning circuit 4 precision that voltage transitions becomes frequency signal further, meet the multiple needs in practical application.
The utility model embodiment is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 3
A kind of novel on-Line Voltage monitoring device for battery pack, see Fig. 1 and Fig. 3, this embodiment 3 have employed the circuit shown in Fig. 3 with embodiment 1, embodiment 2 unlike voltage frequency conversioning circuit 4, voltage frequency conversioning circuit 4 is for being directly proportional output frequency signal F1 to the ratio-voltage V1 of input, this voltage frequency conversioning circuit 4 comprises: voltage controlled oscillator
Voltage controlled oscillator meets ratio-voltage V1, and voltage controlled oscillator output frequency signal F1 is to buffer circuit 5;
Wherein, the model of voltage controlled oscillator is CD4046, the control termination ratio-voltage V1 of the 9th pin voltage controlled oscillator, the output terminal output frequency signal F1 of the 4th pin voltage controlled oscillator.First resistance R1 and the second resistance R2 are connected with the 12 pin of CD4046, the 11 pin respectively; First electric capacity C1 is connected between the 6th pin of CD4046 and the 7th pin, and the effect of each pin of CD4046 and supporting circuit connect for conventionally known to one of skill in the art, and the utility model embodiment does not repeat this.
The present embodiment, by adopting the voltage frequency conversioning circuit 4 of designed, designed, makes frequency signal F1 be directly proportional to the ratio-voltage V1 of input.Can improve by this voltage frequency conversioning circuit 4 precision that voltage transitions becomes frequency signal further, this voltage frequency conversioning circuit 4 only can be realized by CD4046, reduces production cost, meets the multiple needs in practical application.
The utility model embodiment is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 4
A kind of novel on-Line Voltage monitoring device for battery pack, see Fig. 1 and Fig. 4, this embodiment 4 have employed the circuit shown in Fig. 4 with embodiment 1, embodiment 2, embodiment 3 unlike voltage frequency conversioning circuit 4, voltage frequency conversioning circuit 4 is for being directly proportional output frequency signal F1 to the ratio-voltage V1 of input, this voltage frequency conversioning circuit 4 comprises: voltage controlled oscillator
Voltage controlled oscillator meets ratio-voltage V1, and voltage controlled oscillator output frequency signal F1 is to buffer circuit 5.
Wherein, the model of voltage controlled oscillator is NE566V, i.e. the control termination ratio-voltage V1 of pin 5 voltage controlled oscillator, the output terminal output frequency signal F1 of pin 4 voltage controlled oscillator.First resistance R1 one end connects the 3rd resistance R3, the other end of the first resistance R1 connects one end of the first electric capacity C1, one end of the second resistance R2 respectively, the other end of the first electric capacity C1 connects one end of the 4th resistance R4, and the other end of the 4th resistance R4 connects the other end of the 3rd resistance R3; The other end of the second resistance R2, the first pin ground connection of NE566V; 3rd pin of NE566V connects the negative pole of diode D, the positive pole of diode D connects one end of the 5th resistance R5, one end of another termination the 6th resistance R6 of the 5th resistance R5, the emitter of another termination triode T1 of the 6th resistance R6, the collector of triode T1 connects the 7th pin of NE566V, and the base stage of triode T1 connects one end of the 6th resistance R6; 7th pin of NE566V also connects one end of the second electric capacity C2, the other end ground connection of the second electric capacity C2.The effect of each pin of NE566V and supporting circuit connect for conventionally known to one of skill in the art, and the utility model embodiment does not repeat this.
The utility model embodiment, by adopting the voltage frequency conversioning circuit 4 of designed, designed, makes frequency signal F1 be directly proportional to the ratio-voltage V1 of input.Can improve by this voltage frequency conversioning circuit 4 precision that voltage transitions becomes frequency signal further, this voltage frequency conversioning circuit 4 only can be realized by NE566V, reduces production cost, meets the multiple needs in practical application.
The utility model embodiment is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 5
For an on-Line Voltage monitoring device for battery pack, see Fig. 1, this embodiment 5 and embodiment 2-4 unlike, the buffer circuit 5 in this embodiment adopts concrete circuit components,
Wherein, this buffer circuit 5 can be: optoisolator, magnetic coupling isolator or capacitive coupling digital isolator.
When buffer circuit 5 is optoisolator, the optoisolator of 6N138 or 4N25 model can be adopted.
When buffer circuit 5 is magnetic coupling isolator, the magnetic coupling isolator of ADUM1200 model can be adopted.
When buffer circuit 5 adopts capacitive coupling digital isolator, the capacitive coupling digital isolator of ISO7220 or ISO7221 model can be adopted.
The utility model embodiment is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1., for a novel on-Line Voltage monitoring device for battery pack, comprising: direct-flow storage battery group and host computer, is characterized in that,
Described on-Line Voltage monitoring device also comprises: the voltage sampling circuit, the mu balanced circuit that are electrically connected with each secondary battery unit in described direct-flow storage battery group respectively;
Described voltage sampling circuit is electrically connected voltage frequency conversioning circuit, buffer circuit and host computer successively;
Described mu balanced circuit supplies described voltage frequency conversioning circuit by after the output voltage voltage stabilizing of each secondary battery unit, as the supply voltage of described voltage frequency conversioning circuit;
Described voltage sampling circuit obtains the ratio-voltage proportional with each secondary battery unit output voltage, and described ratio-voltage obtains proportional frequency signal through described voltage frequency conversioning circuit, and transfers to described buffer circuit;
Described buffer circuit receives described frequency signal and exports described host computer to; Frequency signal is become voltage signal by same rate conversion and monitors the voltage signal of all secondary battery units by described host computer.
2. a kind of novel on-Line Voltage monitoring device for battery pack according to claim 1, it is characterized in that, described voltage frequency conversioning circuit comprises: the first resistance,
One end of described first resistance connects one end of the first electric capacity, the negative polarity end of the first operational amplifier respectively; The other end of described first electric capacity connects one end of the 3rd resistance, the output terminal of described first operational amplifier respectively; Ratio-voltage described in the positive polarity input termination of described first operational amplifier; The other end of described 3rd resistance connects positive pole, the function generator of diode respectively; Described function generator also connects the positive input of the second operational amplifier, and the output terminal of described second operational amplifier exports described frequency signal to described buffer circuit.
3. a kind of novel on-Line Voltage monitoring device for battery pack according to claim 2, it is characterized in that, the model of described function generator is 8038.
4. a kind of novel on-Line Voltage monitoring device for battery pack according to claim 1, it is characterized in that, described voltage frequency conversioning circuit comprises: voltage controlled oscillator,
Described voltage controlled oscillator connects described ratio-voltage, and described voltage controlled oscillator exports described frequency signal to described buffer circuit.
5. a kind of novel on-Line Voltage monitoring device for battery pack according to claim 4, it is characterized in that, the model of described voltage controlled oscillator is CD4046.
6. a kind of novel on-Line Voltage monitoring device for battery pack according to claim 4, it is characterized in that, the model of described voltage controlled oscillator is NE566V.
7. a kind of novel on-Line Voltage monitoring device for battery pack according to claim arbitrary in claim 1-6, it is characterized in that, described buffer circuit is optoisolator, magnetic coupling isolator or capacitive coupling digital isolator.
8. a kind of novel on-Line Voltage monitoring device for battery pack according to claim 7, is characterized in that,
Described optoisolator is the optoisolator of 6N138 or 4N25 model;
Described magnetic coupling isolator is the magnetic coupling isolator of ADUM1200 model;
Described capacitive coupling digital isolator is the capacitive coupling digital isolator of ISO7220 or ISO7221 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520377519.1U CN204832336U (en) | 2015-06-03 | 2015-06-03 | A it is novel at line voltage monitoring devices for storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520377519.1U CN204832336U (en) | 2015-06-03 | 2015-06-03 | A it is novel at line voltage monitoring devices for storage battery |
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| CN204832336U true CN204832336U (en) | 2015-12-02 |
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| CN201520377519.1U Withdrawn - After Issue CN204832336U (en) | 2015-06-03 | 2015-06-03 | A it is novel at line voltage monitoring devices for storage battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092954A (en) * | 2015-06-03 | 2015-11-25 | 大连市旅顺电力电子设备有限公司 | Novel online voltage monitoring apparatus for storage battery and method thereof |
| CN110289656A (en) * | 2019-07-04 | 2019-09-27 | 大唐恩智浦半导体有限公司 | Battery management circuit and battery module |
-
2015
- 2015-06-03 CN CN201520377519.1U patent/CN204832336U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092954A (en) * | 2015-06-03 | 2015-11-25 | 大连市旅顺电力电子设备有限公司 | Novel online voltage monitoring apparatus for storage battery and method thereof |
| CN105092954B (en) * | 2015-06-03 | 2017-12-08 | 大连市旅顺电力电子设备有限公司 | New on-Line Voltage monitoring device and its method for batteries |
| CN110289656A (en) * | 2019-07-04 | 2019-09-27 | 大唐恩智浦半导体有限公司 | Battery management circuit and battery module |
| WO2021000819A1 (en) * | 2019-07-04 | 2021-01-07 | 大唐恩智浦半导体有限公司 | Battery management circuit and battery module |
| CN110289656B (en) * | 2019-07-04 | 2023-05-16 | 大唐恩智浦半导体有限公司 | Battery management circuit and battery module |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20171208 |
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