CN112803569A - Storage battery emergency power supply device and emergency starting method - Google Patents
Storage battery emergency power supply device and emergency starting method Download PDFInfo
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- CN112803569A CN112803569A CN202110283580.XA CN202110283580A CN112803569A CN 112803569 A CN112803569 A CN 112803569A CN 202110283580 A CN202110283580 A CN 202110283580A CN 112803569 A CN112803569 A CN 112803569A
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- battery
- voltage
- super capacitor
- detection module
- circuit
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 53
- 239000003990 capacitor Substances 0.000 claims abstract description 48
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 17
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 11
- 238000005070 sampling Methods 0.000 claims description 28
- 238000007599 discharging Methods 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 239000000178 monomer Substances 0.000 abstract description 16
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000011897 real-time detection Methods 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0018—Circuits for equalisation of charge between batteries using separate charge circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00308—Overvoltage protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a storage battery emergency power supply device and an emergency starting method, wherein the storage battery emergency power supply device comprises a detection module, a super capacitor bank and a lithium battery pack, wherein the output end of the pre-charge module is connected with a discharge relay, the super capacitor bank is connected with the detection module, and a power switch is connected to the lithium battery pack in parallel; the lithium battery pack is connected with a pre-charging module, and the method comprises the following steps: through the voltage of super capacitor detection module real-time detection, the voltage at battery monomer detection module real-time supervision battery both ends, voltage when the super capacitor both ends is less than battery both ends voltage, then the lithium cell does super capacitor charges, if super capacitor both ends more than or equal to battery both ends voltage, then super capacitor power supply, this device mutually supports through super capacitor detection module and battery monomer detection module, and the inside charge-discharge of real-time monitoring can control the charge-discharge to be equipped with balanced voltage stabilizing circuit in the detection module, discharge the equilibrium to the monomer that voltage is higher than normal.
Description
Technical Field
The invention relates to the field of storage batteries, in particular to a storage battery emergency power supply device and an emergency starting method.
Background
The lead-acid storage battery has a history of over 200 years as a main stable direct-current power supply, and is widely applied to various important fields of transportation, communication, electric power, railways, mines, ports, national defense, computers, scientific research, energy storage and the like, along with the continuous increase of the market share of the lead-acid storage battery, how to maintain and repair an aged lead-acid storage battery becomes a key point of common attention of all countries in the world, and how to improve the service efficiency and the service life of the storage battery becomes a key point of common attention of all countries.
Disclosure of Invention
In order to solve the technical problems, the invention provides an emergency power supply device for a storage battery, which comprises a detection module, a super capacitor bank, a lithium battery pack and a pre-charging module, wherein the output end of the pre-charging module is connected with a discharging relay, the super capacitor bank is connected with the detection module, and the lithium battery pack is connected with a power switch in parallel; the lithium battery pack is connected with a pre-charging module;
the detection module comprises a super-electric single body detection module and a battery single body detection module, the discharging relay is connected with the detection module, and the detection module is also connected with a charging relay.
Preferably, the single super-power detection module comprises a positive voltage division sampling circuit and a negative voltage division sampling circuit, a filter capacitor and an operational amplifier are connected between the positive voltage division sampling circuit and the negative voltage division sampling circuit in a crossing manner, and the positive voltage division sampling circuit and the negative voltage division sampling circuit are respectively connected to the positive input end and the negative input end of the operational amplifier.
Preferably, the positive voltage division sampling circuit comprises two first resistors, and the first resistors are connected with the super capacitor.
Preferably, the negative voltage division sampling circuit comprises two second resistors, and the second resistors are grounded.
Preferably, the battery monomer detection module comprises a monomer acquisition protection circuit, a monomer equalization circuit, a filter circuit and a monomer acquisition chip; the single acquisition protection circuit is used for preventing surge voltage from damaging the circuit, and the single equalization circuit prevents the battery single body from being damaged by continuous short circuit.
Preferably, the single acquisition protection circuit comprises fuses connected to two ends of the battery monomer, and a voltage stabilizing diode is connected between the fuses.
Preferably, the single equalizing circuit comprises an MOS transistor, a gate of the MOS transistor is connected to the voltage regulator diode, and a drain and a source of the MOS transistor are both connected to an equalizing resistor.
Preferably, the pre-charging module comprises a main relay, a pre-charging relay connected with the main relay in parallel and a pre-charging resistor.
An emergency starting method for a storage battery comprises
The voltage of the super capacitor is detected in real time through the single super capacitor detection module, the voltage of the two ends of the battery is monitored in real time through the single battery detection module, when the voltage of the two ends of the super capacitor is lower than the voltage of the two ends of the battery, the lithium battery charges the super capacitor, and if the voltage of the two ends of the super capacitor is larger than or equal to the voltage of the two ends of the battery, the super capacitor supplies power.
Preferably, the pre-charging circuit is connected to the end of the super capacitor bank, the main relay is disconnected firstly, and the pre-charging relay and the pre-charging resistor form a loop to ensure that the loop current is not greater than 10A and reduce the current in the circuit.
The storage battery emergency power supply device provided by the invention has the following beneficial effects: this device mutually supports through super electric monomer detection module and battery monomer detection module, and the inside charge-discharge of real-time supervision can control the charge-discharge to be equipped with balanced voltage stabilizing circuit in the detection module, discharge the equilibrium to the monomer that the voltage is higher than.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic circuit diagram of an electrochemical cell detection module according to the present invention;
FIG. 3 is a schematic circuit diagram of a battery cell detection module according to the present invention;
wherein, 1, detecting module; 2. the super-electric monomer acquisition module; 3. a battery cell collection system; 4. a super capacitor bank; 5. a lithium battery pack; 6. a power switch; 7. a main relay; 8. a pre-charging relay; 9. a pre-charge circuit; 10. a discharge relay; 11. a charging relay; 12. a fuse; 13. an MOS tube; 14. equalizing the resistance; 15. and a voltage regulator diode.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, the invention provides a storage battery emergency power supply device, which includes a detection module 1, a super capacitor bank 4, a lithium battery pack 5, and a pre-charge module, wherein an output end of the pre-charge module is connected with a discharge relay 10, the super capacitor bank 4 is connected with the detection module 1, and the lithium battery pack 5 is connected with a power switch 6 in parallel; the lithium battery pack 5 is connected with a pre-charging module; the working mode of the device is as follows: the voltage of the super capacitor is detected in real time through the single super capacitor detection module 1, the voltage of the two ends of the battery is monitored in real time through the single battery detection module 1, when the voltage of the two ends of the super capacitor is lower than the voltage of the two ends of the battery, the lithium battery charges the super capacitor, and if the voltage of the two ends of the super capacitor is larger than or equal to the voltage of the two ends of the battery, the super capacitor supplies power.
And specifically: the detection module 1 comprises a single super-electricity detection module 1 and a single battery detection module 1, the discharge relay 10 is connected with the detection module 1, and the detection module 1 is further connected with a charge relay 11.
As shown in fig. 2, the module 1 for detecting a super-power cell includes a positive voltage-dividing sampling circuit and a negative voltage-dividing sampling circuit, a filter capacitor C and an operational amplifier U1 are connected across between the positive voltage-dividing sampling circuit and the negative voltage-dividing sampling circuit, the positive voltage-dividing sampling circuit and the negative voltage-dividing sampling circuit are respectively connected to a forward input end and a reverse input end of the operational amplifier, the positive voltage-dividing sampling circuit includes two first resistors R1 and R2, the first resistors R1 and R2 are connected to the super capacitor group 4Cn, the other ends of the first resistors are connected to a node of a second resistor, the negative voltage-dividing sampling circuit includes two second resistors R3 and R4, the second resistors R3 and R4 are grounded, the same other ends of the second resistors are connected to the node, and a node to which the second resistors are connected is an output end of the voltage-dividing sampling circuit; in the voltage division sampling circuit, the first resistors can be marked as R1 and R2 which are large resistors with equal resistance values and can be selected as 1M ohm, and the second resistors can be marked as R3 and R4 which are small resistors with equal resistance values compared with R1 and R2, and are generally preferably selected as dozens of kilo ohms, so that the voltage value of the voltage of the positive electrode and the negative electrode of the reaction super capacitor monomer obtained by sampling to the ground voltage is small, and the damage to a rear-stage circuit is avoided. In addition, the differential sampling circuit samples the voltages of the anode and the cathode of the single capacitor to be measured, and the operational amplifier U1 is used for converting the two differentially sampled signals into a differential pressure signal taking the ground as a reference, so that the voltage of the single super capacitor is sampled and measured.
As shown in fig. 3, the single detection module 1 includes a single acquisition protection circuit, a single equalization circuit, a filter circuit, and a single acquisition chip; the single acquisition protection circuit is used for preventing surge voltage from damaging a circuit, the single equalization circuit prevents a battery unit from being damaged due to continuous short circuit, the single acquisition protection circuit comprises fuses 12 connected to two ends of the battery unit, a voltage stabilizing diode 15 is connected between the fuses 12, the fuses 12 are connected to the anode and the cathode of the battery unit, when the voltage of the battery unit rises abnormally, the voltage stabilizing diode 15 is broken down and conducted, large current flows through the fuses 12, when the time of the abnormal rise of the voltage is microsecond level, the fuses 12 cannot be fused, but a voltage stabilizing tube stabilizes the voltage within a protection voltage range, and the surge voltage is prevented from damaging the circuit. When the abnormal rise time of the voltage is millisecond level, the fuse 12 is fused, the connection between the abnormal single battery and the single acquisition detection unit is disconnected, and the overvoltage protection of the single acquisition detection unit circuit is realized. The single equalizing circuit comprises an MOS (metal oxide semiconductor) tube 13, the grid electrode of the MOS tube 13 is connected with a voltage stabilizing diode 15, the drain electrode and the source electrode of the MOS tube 13 are both connected with an equalizing resistor 14, when the voltage of a certain battery monomer in the battery pack is higher than the voltages of other battery monomers, the single acquisition chip outputs low level to control the conduction of the switch MOS tube, and the battery monomer forms a discharging loop through a fuse 12, the equalizing resistor 14, the switch MOS tube, the equalizing resistor 14 and the fuse 12 to perform discharging equalization. The voltage stabilizing diode 15 is used for protecting the GS pole of the MOS tube of the switch, and when the GS pole voltage exceeds the protection voltage of the MOS tube, the voltage stabilizing diode 15 is conducted to clamp the GS voltage in a safe voltage range.
Preferably, the pre-charging module comprises a main relay 7, a pre-charging relay 8 and a pre-charging resistor which are connected with the main relay 7 in parallel, the pre-charging relay 8 and the pre-charging resistor are connected to the end part of the super capacitor bank 4 through a pre-charging circuit 9, the main relay 7 is firstly switched off, the pre-charging relay 8 and the pre-charging resistor form a loop, the loop current is not larger than 10A, the loop current is used for reducing the current in the circuit, the current in a single path is prevented from being overlarge, the front end of a battery is provided with a large capacitor C, if the pre-charging is not performed, the main relay 7 is directly switched on with the capacitor C, the voltage of the battery is high at the moment, the voltage on the capacitor C is close to 0, the instant short circuit is achieved at the moment, the load resistor. At this time, the main relay 7 is certainly damaged, the main relay 7 is firstly disconnected in the pre-charging process, the pre-charging loop formed by the pre-charging relay 8 and the pre-charging resistor is firstly connected, the resistance value is more than 30 Ω, the loop voltage is assumed to be 300V, the loop current is 10A at the maximum, and the capacity of the pre-charging relay 8 is more than 10A, so that the current in the circuit is reduced.
Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The emergency power supply device for the storage battery is characterized by comprising a detection module, a super capacitor bank, a lithium battery pack and a pre-charging module, wherein the output end of the pre-charging module is connected with a discharging relay, the super capacitor bank is connected with the detection module, and the lithium battery pack is connected with a power switch in parallel; the lithium battery pack is connected with a pre-charging module;
the detection module comprises a super-electric single body detection module and a battery single body detection module, the discharging relay is connected with the detection module, and the detection module is also connected with a charging relay.
2. The battery capacity detection and emergency starting method according to claim 1, wherein the super-electric cell detection module comprises a positive voltage division sampling circuit and a negative voltage division sampling circuit, a filter capacitor and an operational amplifier are connected between the positive voltage division sampling circuit and the negative voltage division sampling circuit in a crossing manner, and the positive voltage division sampling circuit and the negative voltage division sampling circuit are respectively connected to a positive input end and a negative input end of the operational amplifier.
3. The battery capacity detection and emergency starting method according to claim 2, wherein the positive voltage division sampling circuit comprises two first resistors, and the first resistors are connected with the super capacitor.
4. The battery capacity detection and emergency start-up method of claim 2, wherein the negative voltage division sampling circuit comprises two second resistors, and the second resistors are grounded.
5. The storage battery capacity detection and emergency starting method according to claim 1, wherein the battery cell detection module comprises a cell acquisition protection circuit, a cell equalization circuit, a filter circuit and a cell acquisition chip; the single acquisition protection circuit is used for preventing surge voltage from damaging the circuit, and the single equalization circuit prevents the battery single body from being damaged by continuous short circuit.
6. The battery capacity detection and emergency starting method according to claim 5, wherein the cell collection protection circuit comprises fuses connected to two ends of the battery cell, and a voltage stabilizing diode is connected between the fuses.
7. The storage battery capacity detection and emergency starting method according to claim 5, wherein the cell balancing circuit comprises an MOS (metal oxide semiconductor) tube, a grid electrode of the MOS tube is connected with the voltage stabilizing diode, and a drain electrode and a source electrode of the MOS tube are both connected with a balancing resistor.
8. The battery capacity detection and emergency start method of claim 1, wherein the pre-charge module comprises a main relay, a pre-charge relay connected in parallel with the main relay, and a pre-charge resistor.
9. An emergency starting method for a storage battery is characterized by comprising
The voltage of the super capacitor is detected in real time through the single super capacitor detection module, the voltage of the two ends of the battery is monitored in real time through the single battery detection module, when the voltage of the two ends of the super capacitor is lower than the voltage of the two ends of the battery, the lithium battery charges the super capacitor, and if the voltage of the two ends of the super capacitor is larger than or equal to the voltage of the two ends of the battery, the super capacitor supplies power.
10. The battery emergency starting method according to claim 9, wherein the pre-charging circuit is connected to the end of the super capacitor bank, the main relay is disconnected first, and the pre-charging relay and the pre-charging resistor form a loop to ensure that the loop current is not greater than 10A for reducing the current in the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110283580.XA CN112803569A (en) | 2021-03-16 | 2021-03-16 | Storage battery emergency power supply device and emergency starting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110283580.XA CN112803569A (en) | 2021-03-16 | 2021-03-16 | Storage battery emergency power supply device and emergency starting method |
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| Publication Number | Publication Date |
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| CN112803569A true CN112803569A (en) | 2021-05-14 |
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| CN202110283580.XA Pending CN112803569A (en) | 2021-03-16 | 2021-03-16 | Storage battery emergency power supply device and emergency starting method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163359A (en) * | 2013-03-14 | 2013-06-19 | 深圳市今朝时代新能源技术有限公司 | Super-capacitor single voltage sampling measurement circuit |
| CN105098933A (en) * | 2015-09-28 | 2015-11-25 | 重庆长安汽车股份有限公司 | Battery monomer acquisition detection device |
| CN207542814U (en) * | 2017-10-31 | 2018-06-26 | 惠州市蓝微新源技术有限公司 | A kind of emergency starting power supply |
| CN109398152A (en) * | 2018-11-01 | 2019-03-01 | 芜湖奇达动力电池系统有限公司 | Plug-in hybrid-power automobile battery system high pressure preliminary filling control method |
| CN211859635U (en) * | 2020-03-17 | 2020-11-03 | 上海瑞垒电子科技有限公司 | Pre-charging device with main positive relay |
| CN212343357U (en) * | 2020-04-30 | 2021-01-12 | 安徽沃博源科技有限公司 | Control device for power supply system |
-
2021
- 2021-03-16 CN CN202110283580.XA patent/CN112803569A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163359A (en) * | 2013-03-14 | 2013-06-19 | 深圳市今朝时代新能源技术有限公司 | Super-capacitor single voltage sampling measurement circuit |
| CN105098933A (en) * | 2015-09-28 | 2015-11-25 | 重庆长安汽车股份有限公司 | Battery monomer acquisition detection device |
| CN207542814U (en) * | 2017-10-31 | 2018-06-26 | 惠州市蓝微新源技术有限公司 | A kind of emergency starting power supply |
| CN109398152A (en) * | 2018-11-01 | 2019-03-01 | 芜湖奇达动力电池系统有限公司 | Plug-in hybrid-power automobile battery system high pressure preliminary filling control method |
| CN211859635U (en) * | 2020-03-17 | 2020-11-03 | 上海瑞垒电子科技有限公司 | Pre-charging device with main positive relay |
| CN212343357U (en) * | 2020-04-30 | 2021-01-12 | 安徽沃博源科技有限公司 | Control device for power supply system |
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Application publication date: 20210514 |