CN213633752U - Storage battery pack offline or open-circuit monitoring device - Google Patents

Abstract

The utility model discloses a storage battery off-line or monitoring devices that opens a way, including built-in central processing unit module that has the group's end of polytype battery under the off-line state of opening a way and the voltage variation curve information of monomer along with time, central processing unit module electricity is connected with the voltage acquisition module that is used for gathering storage battery terminal voltage or battery monomer voltage, central processing unit module electricity is connected with the module of reporting an emergency and asking for help or increased vigilance that is used for sending alarm information to the user, central processing unit module electricity is connected with display module, display module is used for showing current detection information, central processing unit module still electricity is connected with the communication module with backstage host computer communication connection for on passing to the backstage host computer with alarm information. The utility model has the advantages of measure accurately, the possibility of fault misstatement, missing report is very low, simultaneously because needn't use high accuracy current transformer, can reduce cost.

Description

Storage battery pack offline or open-circuit monitoring device

Technical Field

The utility model relates to a power equipment monitoring technology field specifically is a storage battery off-line or monitoring devices that opens a way.

Background

In an electric power system, a device for measuring a float charge current of a storage battery pack is mostly adopted for an offline and open-circuit monitoring device of the storage battery pack. However, in practical application, the storage battery pack works in a floating charge state most of the time, and the floating charge current is very small and is in the milliampere level. In order to accurately measure the floating charge current, the high-precision current transformer is adopted to measure the floating charge current on the premise of not changing a connecting line of the storage battery pack, so that the cost is high and the actual measurement effect cannot be guaranteed. And when a high-precision current transformer is adopted, accurate measurement of the storage battery pack during large-current charging and discharging cannot be completed due to the fact that the measuring range of the high-precision transformer is small. Therefore, the storage battery pack offline or open-circuit monitoring device is provided.

SUMMERY OF THE UTILITY MODEL

For solving the defect that prior art exists, the utility model provides a storage battery off-line or open a way monitoring devices.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a storage battery off-line or monitoring devices that opens a way, including built-in central processing unit module that has the group's end of polytype battery under off-line, the state of opening a way and the voltage variation curve information of monomer along with time, central processing unit module electricity is connected with the voltage acquisition module that is used for gathering storage battery terminal voltage or battery monomer voltage, central processing unit module electricity is connected with the module of reporting an emergency and asking for help or increased vigilance that is used for sending alarm information to the user, central processing unit module electricity is connected with display module, display module is used for current detection information, central processing unit module still electricity is connected with the communication module with backstage host computer communication connection for on uploading alarm information to the backstage host computer, the device still includes power module, power module is used for central processing unit module, communication module, The voltage acquisition module and the alarm module supply power.

As a preferred technical scheme of the utility model, current detection information include current storage battery actual state, current group battery voltage and current group battery temperature.

As a preferred technical scheme of the utility model, current storage battery actual state include online, off-line and open a way.

As a preferred technical scheme of the utility model, the voltage information that central processing unit module will received voltage acquisition module collection matches the contrast with the voltage variation curve information of the group end of the battery of the same type that embeds in the central processing unit module under off-line, the state of opening a way and monomer along with time, comes whether off-line or the trouble of opening a way to the storage battery that judges to detect, when detecting storage battery off-line or the trouble of opening a way, the warning module sends warning information and utilizes display module to show current detection information simultaneously.

As a preferred technical solution of the present invention, the alarm module includes fixed resistors R1 and R2; a transistor Q1; a diode D1 and a buzzer;

one end of the fixed resistor R1 is electrically connected with an ALMSP pin in the central processor module, a base electrode of a triode Q1 of the fixed resistor R1 is electrically connected, one end of the fixed resistor R2 is electrically connected with the base electrode of a triode Q1, the other end of the fixed resistor R2 is electrically connected with a collector electrode of a triode Q1, and the collector electrode of the triode Q1 is electrically connected with a loading voltage VCC 1; an emitting electrode of the triode Q1 is electrically connected with one end of a buzzer and a cathode of the diode D1 respectively; the other end of the buzzer and the anode of the diode D1 are grounded.

As a preferred technical solution of the present invention, the voltage acquisition module includes sampling resistors R3 and R4; a fixed resistor R5; capacitances C1, C2, and C3; the voltage sampling chip INA 128;

one end of the sampling resistor R3 is connected with a first sampling end A, the other end of the sampling resistor R3, one end of the capacitor C2 and one end of the capacitor C3 are respectively and electrically connected with a VIN + pin on the voltage sampling chip INA128, one end of the sampling resistor R4 is connected with a second sampling end B, the other end of the sampling resistor R4, one end of the capacitor C1 and the other end of the capacitor C2 are respectively and electrically connected with a VIN-pin on the voltage sampling chip INA128, and the other end of the capacitor C3 and the other end of the capacitor C1 are grounded; the R4 is connected IN series between pins 1 and 8 of the voltage sampling chip INA128, the IN pin on the voltage sampling chip INA128 being electrically connected to the central processor module.

As a preferred technical solution of the present invention, the power module includes a power chip, capacitors C4, C5, C6, C7 and C8; non-polar capacitances C9, C10; an inductance L; a resistor R6;

the capacitors C4, C5, C6 and C10 are connected in parallel to form a capacitor voltage stabilizing circuit, a V0+ pin of the power chip is electrically connected with one end of an inductor L, one end of a capacitor C7, one end of a resistor R6, the anode of a non-polar capacitor C9 and the resistor, the other end of the inductor L is electrically connected with one end of the capacitor voltage stabilizing circuit, the other end of the capacitor voltage stabilizing circuit, the cathode of the capacitor C7, the cathode of the non-polar capacitor C9 and one end of the resistor R6 are respectively electrically connected with a 0V pin of the power chip, and a V0+ pin of the power chip is connected with a driving voltage VDD; the VIN + pin of the power supply chip is connected with the voltage output end, and the capacitor C8 is connected between the VIN + pin and the GND pin of the power supply chip.

The utility model has the advantages that: the off-line or open-circuit monitoring device of the storage battery pack has the advantages that the received voltage information acquired by the voltage acquisition module is matched and compared with the voltage change curve information of the group end and the monomer of the same type of batteries in the off-line or open-circuit state along with the time through the central processing unit module which is internally provided with the voltage change curve information of the group end and the monomer of the various types of batteries in the off-line or open-circuit state along with the time, so as to judge whether the detected storage battery pack has off-line or open-circuit faults or not, when the off-line or open-circuit faults of the storage battery pack are detected, the alarm module sends alarm information and simultaneously displays the current detection information by using the display module, the problem that a high-precision current transformer is required to be used for measuring the floating charge current in the detection process is solved, the off-line or, meanwhile, because a high-precision current transformer is not needed, the cost can be reduced. The utility model discloses a set up specific voltage sampling module and sample, have the stable characteristics of sampling to supply power through specific circuit's power, adopt a plurality of parallelly connected electric capacity that set up to compensate the effect that plays steady voltage stationary flow, make voltage and the current stability to mains operated.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of an off-line or open-circuit monitoring device for a storage battery pack according to the present invention;

fig. 2 is a circuit diagram of an alarm module of an off-line or open-circuit monitoring device for a storage battery pack according to the present invention;

fig. 3 is a circuit diagram of a voltage acquisition module of an off-line or open-circuit monitoring device for a storage battery pack according to the present invention;

fig. 4 is a circuit diagram of a power module of a battery pack offline or open circuit monitoring device of the present invention;

FIG. 5 is a schematic diagram of monitoring of offline monitoring of a battery pack in an embodiment;

fig. 6 is a schematic diagram of monitoring open circuit monitoring of the battery pack in the embodiment.

In the figure: 1. a central processor module; 2. a voltage acquisition module; 3. a display module; 4. an alarm module; 5. a communication module; 6. and a power supply module.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-6, the utility model relates to a storage battery off-line or monitoring devices that opens a way, including built-in central processing unit module 1 that has the group's end of polytype battery under off-line, the state of opening a way and the voltage variation curve information of monomer along with time, central processing unit module 1 electricity is connected with the voltage acquisition module 2 that is used for gathering storage battery terminal voltage or battery monomer voltage, central processing unit module 1 electricity is connected with the alarm module 4 that is used for sending alarm information to the user, central processing unit module 1 electricity is connected with display module 3, display module 3 is used for current detection information, central processing unit module 1 still electricity is connected with communication module 5 with backstage host computer communication connection for on reaching the backstage host computer with alarm information, the device still includes power module 6, power module 6 is used for central processing unit module 1, the, The communication module 5, the display module 3, the voltage acquisition module 2 and the alarm module 4 supply power.

The current detection information comprises the actual state of the current storage battery pack, the current battery pack voltage and the current battery pack temperature.

The actual states of the current storage battery pack comprise online, offline and open circuit.

The central processing unit module 1 matches and compares the received voltage information acquired by the voltage acquisition module 2 with voltage change curve information of a group end and a monomer of a battery of the same type built in the central processing unit module 1 in an off-line and open-circuit state along with time to judge whether the detected storage battery pack has an off-line or open-circuit fault, and when the storage battery pack has the off-line or open-circuit fault, the alarm module 4 sends alarm information and displays the current detection information by using the display module 3.

The alarm module 4 comprises fixed resistors R1 and R2; a transistor Q1; a diode D1 and a buzzer;

one end of the fixed resistor R1 is electrically connected with an ALMSP pin in the central processor module, a base electrode of a triode Q1 of the fixed resistor R1 is electrically connected, one end of the fixed resistor R2 is electrically connected with the base electrode of a triode Q1, the other end of the fixed resistor R2 is electrically connected with a collector electrode of a triode Q1, and the collector electrode of the triode Q1 is electrically connected with a loading voltage VCC 1; an emitting electrode of the triode Q1 is electrically connected with one end of a buzzer and a cathode of the diode D1 respectively; the other end of the buzzer and the anode of the diode D1 are grounded.

The voltage acquisition module 2 comprises sampling resistors R3 and R4; a fixed resistor R5; capacitances C1, C2, and C3; the voltage sampling chip INA 128;

one end of the sampling resistor R3 is connected with a first sampling end A, the other end of the sampling resistor R3, one end of the capacitor C2 and one end of the capacitor C3 are respectively and electrically connected with a VIN + pin on the voltage sampling chip INA128, one end of the sampling resistor R4 is connected with a second sampling end B, the other end of the sampling resistor R4, one end of the capacitor C1 and the other end of the capacitor C2 are respectively and electrically connected with a VIN-pin on the voltage sampling chip INA128, and the other end of the capacitor C3 and the other end of the capacitor C1 are grounded; the R4 is connected IN series between pins 1 and 8 of the voltage sampling chip INA128, the IN pin on the voltage sampling chip INA128 being electrically connected to the central processor module. Through the CPU module 1 which is internally provided with the voltage change curve information of the group end and the monomer of a plurality of types of batteries under the off-line and open-circuit states along with the time, the received voltage information acquired by the voltage acquisition module 2 is matched and compared with the voltage change curve information of the group end and the monomer of the same type of batteries under the off-line and open-circuit states along with the time in the CPU module 1 to judge whether the detected storage battery pack has off-line or open-circuit faults or not, when the storage battery pack has the off-line or open-circuit faults, the alarm module 4 sends out alarm information and simultaneously displays the current detection information by using the display module 3, thereby solving the problem that a high-precision current transformer is required to be used for measuring the floating charge current in the detection process, having the advantages of accurate measurement and extremely low possibility of false alarm and missing, and simultaneously avoiding the use of the high, the cost can be reduced. The utility model discloses a set up specific voltage sampling module and sample, have the stable characteristics of sampling to supply power through specific circuit's power, adopt a plurality of parallelly connected electric capacity that set up to compensate the effect that plays steady voltage stationary flow, make voltage and the current stability to mains operated.

The power supply module (6) comprises a power supply chip, capacitors C4, C5, C6, C7 and C8; non-polar capacitances C9, C10; an inductance L; a resistor R6;

the capacitors C4, C5, C6 and C10 are connected in parallel to form a capacitor voltage stabilizing circuit, a V0+ pin of the power chip is electrically connected with one end of an inductor L, one end of a capacitor C7, one end of a resistor R6, the anode of a non-polar capacitor C9 and the resistor, the other end of the inductor L is electrically connected with one end of the capacitor voltage stabilizing circuit, the other end of the capacitor voltage stabilizing circuit, the cathode of the capacitor C7, the cathode of the non-polar capacitor C9 and one end of the resistor R6 are respectively electrically connected with a 0V pin of the power chip, and a V0+ pin of the power chip is connected with a driving voltage VDD; the VIN + pin of the power supply chip is connected with the voltage output end, and the capacitor C8 is connected between the VIN + pin and the GND pin of the power supply chip.

When utilizing the utility model discloses to storage battery off-line or open a way the monitoring time, fig. 5 is storage battery off-line monitoring part, and switch point 1 and switch point 2 represent positive negative pole fuse or the empty contact of opening when storage battery and the machine that charges are connected respectively in the picture. The voltage acquisition module 2 acquires the charger terminal voltage Ucd and the storage battery pack terminal voltage Uab, and judges that the storage battery pack is offline when the voltage difference value between Ucd and Uab exceeds 5 per mill of a rated value and is more than 0.4V, and the value of the storage battery pack terminal voltage Uab conforms to a pack terminal voltage change curve in the storage battery pack offline state. At the moment, an offline fault point of the storage battery pack is judged through cross measurement, and if Uad is Ucd and Uab is Ucb, the offline fault point is at a switch point 2, namely a negative fuse or a null switch is opened; if Uad ═ Uab, Ucd ═ Ucb, then the offline fault point is at switching point 1, i.e. the positive fuse or the null switch opens; if Uad is 0 and Ucb is 0, then both switch points 1 and 2 fail, i.e. both positive and negative fuses or the null switch is open.

Fig. 6 is a battery pack open circuit monitoring part, wherein the acquisition points 1, 2, 3 and 4 can complete the measurement of the cell voltages of batteries 1, 2 and 3, and n represents the integral number of the battery packs. The voltage acquisition module sends the acquired monomer voltage of the storage battery to the central processing unit in real time, when the detected monomer average voltage of the storage battery to be detected is lower than the float charging voltage, a monomer average voltage time-varying curve graph is established by taking the point as a starting point, and if the varying curve accords with a monomer voltage varying curve in the storage battery open circuit state, the storage battery is considered to be open circuit. In the document, for convenience of understanding, only three sampling batteries are listed, and more sampling batteries can be added according to needs in practical application. The embodiment provides a storage battery offline and open-circuit monitoring device which can judge an offline fault point through a cross measurement method.

And (4) collecting the average voltage of three storage battery monomers as a sample, and judging whether the storage battery pack is open-circuited or not through a voltage change curve. For convenience of description, only three storage batteries are listed, and in actual operation, whether to open a circuit is judged by collecting the average voltage of single or multiple storage batteries is within the protection scope of the patent.

The above description is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a storage battery off-line or open circuit monitoring devices, includes that the built-in group end and monomer of multiple type battery under off-line, open circuit state are along with the central processing unit module of the voltage variation curve information of time (1), its characterized in that: the device is characterized in that the central processing unit module (1) is electrically connected with a voltage acquisition module (2) used for acquiring the voltage of the terminal of the storage battery pack or the voltage of the storage battery monomer, the central processing unit module (1) is electrically connected with an alarm module (4) used for sending alarm information to a user, the central processing unit module (1) is electrically connected with a display module (3), the display module (3) is used for detecting the current information, the central processing unit module (1) is further electrically connected with a communication module (5) in communication connection with a background host computer and used for uploading alarm information to the background host computer, the device further comprises a power module (6), and the power module (6) is used for supplying power to the central processing unit module (1), the communication module (5), the display module (3), the voltage acquisition module (2) and the alarm module (4.

2. The battery pack offline or open-circuit monitoring device as claimed in claim 1, wherein said current detection information includes current battery pack actual status, current pack voltage and current pack temperature.

3. The battery pack offline or open circuit monitoring device according to claim 2, wherein the current battery pack actual state comprises online, offline and open circuit.

4. The storage battery pack offline or open-circuit monitoring device according to claim 1, wherein the central processing unit module (1) matches and compares the received voltage information acquired by the voltage acquisition module (2) with voltage change curve information of a group end and a single body of a battery of the same type built in the central processing unit module (1) in an offline or open-circuit state along with time to judge whether the detected storage battery pack has an offline or open-circuit fault, and when the storage battery pack has the offline or open-circuit fault, the alarm module (4) sends out alarm information and displays current detection information by using the display module (3).

5. The battery pack offline or open circuit monitoring device according to claim 1, wherein the alarm module (4) comprises fixed resistors R1, R2; a transistor Q1; a diode D1 and a buzzer;

one end of the fixed resistor R1 is electrically connected with an ALMSP pin in the central processor module, a base electrode of a triode Q1 of the fixed resistor R1 is electrically connected, one end of the fixed resistor R2 is electrically connected with the base electrode of a triode Q1, the other end of the fixed resistor R2 is electrically connected with a collector electrode of a triode Q1, and the collector electrode of the triode Q1 is electrically connected with a loading voltage VCC 1; an emitting electrode of the triode Q1 is electrically connected with one end of a buzzer and a cathode of the diode D1 respectively; the other end of the buzzer and the anode of the diode D1 are grounded.

6. The battery pack offline or open circuit monitoring device according to claim 1, wherein the voltage acquisition module (2) comprises sampling resistors R3, R4; a fixed resistor R5; capacitances C1, C2, and C3; the voltage sampling chip INA 128;

one end of the sampling resistor R3 is connected with a first sampling end A, the other end of the sampling resistor R3, one end of the capacitor C2 and one end of the capacitor C3 are respectively and electrically connected with a VIN + pin on the voltage sampling chip INA128, one end of the sampling resistor R4 is connected with a second sampling end B, the other end of the sampling resistor R4, one end of the capacitor C1 and the other end of the capacitor C2 are respectively and electrically connected with a VIN-pin on the voltage sampling chip INA128, and the other end of the capacitor C3 and the other end of the capacitor C1 are grounded; the R4 is connected IN series between pins 1 and 8 of the voltage sampling chip INA128, the IN pin on the voltage sampling chip INA128 being electrically connected to the central processor module.

7. The off-line or open-circuit monitoring device for the storage battery pack according to claim 1, wherein the power module (6) comprises a power chip, capacitors C4, C5, C6, C7 and C8; non-polar capacitances C9, C10; an inductance L; a resistor R6;

the capacitors C4, C5, C6 and C10 are connected in parallel to form a capacitor voltage stabilizing circuit, a V0+ pin of the power chip is electrically connected with one end of an inductor L, one end of a capacitor C7, one end of a resistor R6, the anode of a non-polar capacitor C9 and the resistor, the other end of the inductor L is electrically connected with one end of the capacitor voltage stabilizing circuit, the other end of the capacitor voltage stabilizing circuit, the cathode of the capacitor C7, the cathode of the non-polar capacitor C9 and one end of the resistor R6 are respectively electrically connected with a 0V pin of the power chip, and a V0+ pin of the power chip is connected with a driving voltage VDD; the VIN + pin of the power supply chip is connected with the voltage output end, and the capacitor C8 is connected between the VIN + pin and the GND pin of the power supply chip.

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