CN111181205A - Parallel high-voltage control box of battery system - Google Patents
Parallel high-voltage control box of battery system Download PDFInfo
- Publication number
- CN111181205A CN111181205A CN201911100280.2A CN201911100280A CN111181205A CN 111181205 A CN111181205 A CN 111181205A CN 201911100280 A CN201911100280 A CN 201911100280A CN 111181205 A CN111181205 A CN 111181205A
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- China
- Prior art keywords
- relay
- charging
- charge
- diode
- circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007599 discharging Methods 0.000 claims description 29
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052744 lithium Inorganic materials 0.000 abstract description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
Abstract
The invention relates to a parallel high-voltage control box of a battery system, which comprises: the system comprises a discharge relay, a charge relay, a pre-charge resistor, a fuse, a discharge diode, a charge diode, a circuit breaker and a current sensor; the utility model discloses a circuit breaker, including discharge relay and charging relay, pre-charge relay and pre-charge resistance, discharge relay and charging relay establish ties, pre-charge relay and pre-charge resistance establish ties, discharge relay and charging relay establish ties the back and establish ties the back parallelly connected with pre-charge relay and pre-charge resistance again, the diode that charges is parallelly connected with the discharge relay, the diode that discharges is parallelly connected with the charging relay, the fuse establishes ties on the circuit, the circuit breaker establishes ties on the circuit, current sensor establishes ties on the circuit. Compared with the prior art, the high-voltage control box can realize the parallel control of a plurality of high-voltage lithium battery systems and can realize the work matching with the switching power supply.
Description
Technical Field
The invention belongs to the field of design and production of lithium batteries, and particularly relates to a parallel high-voltage control box of a battery system.
Background
The lithium ion battery is a novel storage battery product which is developed rapidly recently, is green and environment-friendly and belongs to a new energy product. However, the lithium battery has potential safety hazards, and the overcharge of the lithium battery can cause the lithium battery to be burnt and exploded, so that great personal damage and financial loss are brought; over-discharge of lithium batteries can lead to a reduction in the service life of the lithium battery.
When the lithium ion battery is applied to the parallel connection of a high-voltage system, how to effectively control the charging and discharging of the battery is particularly important. The prior art can not realize the parallel control of a plurality of high-voltage lithium battery systems and can not realize the work matching with a switching power supply.
Disclosure of Invention
The invention aims to provide a parallel high-voltage control box of a battery system, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the method comprises the following steps: the system comprises a discharge relay, a charge relay, a pre-charge resistor, a fuse, a discharge diode, a charge diode, a circuit breaker and a current sensor; the utility model discloses a circuit breaker, including discharge relay and charging relay, pre-charge relay and pre-charge resistance, discharge relay and charging relay establish ties, pre-charge relay and pre-charge resistance establish ties, discharge relay and charging relay establish ties the back and establish ties the back parallelly connected with pre-charge relay and pre-charge resistance again, the diode that charges is parallelly connected with the discharge relay, the diode that discharges is parallelly connected with the charging relay, the fuse establishes ties on the circuit, the circuit breaker establishes ties on the circuit, current sensor establishes ties on the circuit.
The discharging relay is in a closed state, the charging relay is in a closed state, and the pre-charging relay is in an open state.
The charging diode is communicated from the anode (P +) of the switching power supply to the anode (B +) of the battery, and the discharging diode is communicated from the anode (B +) of the battery to the anode (P +) of the switching power supply.
When the current exceeds a specified value, the fuse protection circuit fuses the melt by the heat generated by the fuse protection circuit.
The circuit breaker protection circuit can break a circuit when the circuit is subjected to overload, short circuit and under-voltage protection.
When a single battery system is in an undervoltage state, the discharging relay is disconnected, at the moment, the circuit is characterized in that the fuse is connected with the charging diode in series, the charging diode is connected with the charging relay in series, the charging relay is connected with the circuit breaker in series, at the moment, the charging diode is connected with the circuit breaker in series, no current exists in the circuit because the charging diode is connected in series in the control circuit, but the total voltage of the battery can be measured by P + \ P-, and at the moment, the battery system.
When a single battery system is in a full-charge state, the charging relay is disconnected, at the moment, the circuit is characterized in that the fuse is connected with the discharging diode in series, the discharging diode is connected with the discharging relay in series, and the discharging relay is connected with the circuit breaker in series.
Meanwhile, when a plurality of systems are connected in parallel, one battery system falls behind, the pre-charging relay is closed, the charging relay and the discharging relay are both disconnected, at the moment, the circuit is formed in a manner that the fuse is connected with the pre-charging relay in series, the pre-charging relay is connected with the pre-charging resistor in series, the pre-charging resistor is connected with the circuit breaker in series, and current flows to the positive pole of the battery from the positive pole of the power supply, so that the battery is balanced, and the consistency of.
Compared with the prior art, the invention has the following beneficial effects:
1. the parallel control of a plurality of high-voltage lithium battery systems can be realized, and the work matching with a switching power supply can be realized.
2. The charging and discharging management of the battery system is realized through the two diodes and the charging and discharging relay, and meanwhile, the backward battery system in the parallel system is subjected to consistency management through the pre-charging resistor, so that the charging and discharging control performance and consistency of the plurality of battery systems in parallel connection can be ensured.
3. The overcharge and overdischarge risks of the battery are reduced, the service life and safety of a battery system are facilitated, and meanwhile the performance consistency and the cycle life of the battery can be improved.
Drawings
FIG. 1 is an electrical schematic of the present invention;
in fig. 1: 1-discharge relay, 2-charge relay, 3-precharge relay, 4-precharge resistor, 5-fuse, 6-charge diode, 7-discharge diode, 8-breaker, 9-current sensor.
Detailed Description
So that the manner in which the features and aspects of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.
Referring to fig. 1, a parallel high voltage control box of a battery system includes: the system comprises a discharging relay 1, a charging relay 2, a pre-charging relay 3, a pre-charging resistor 4, a fuse 5, a discharging diode 6, a charging diode 7, a circuit breaker 8 and a current sensor 9; the utility model discloses a safety protection device, including discharge relay 1, pre-charge relay 3, pre-charge relay 4, discharge relay 1 and charge relay 2, pre-charge relay 3 and pre-charge relay 4 are established ties after establishing ties, it is parallelly connected with pre-charge relay 3 and pre-charge relay 4 again to discharge relay 1, charge diode 6 is parallelly connected with discharge relay 1, discharge diode 7 is parallelly connected with charge relay 2, fuse 5 establishes ties on the circuit, circuit breaker 8 establishes ties on the circuit, current sensor 9 establishes ties on the circuit.
The discharging relay 1 is in a closed state, the charging relay 2 is in a closed state, and the pre-charging relay 3 is in an open state.
The charging diode 6 is communicated from the anode (P +) of the switching power supply to the anode (B +) of the battery, and the discharging diode 7 is communicated from the anode (B +) of the battery to the anode (P +) of the switching power supply.
The fuse 5 protects the circuit, and fuses the fuse body by the heat generated by the fuse when the current exceeds a specified value.
The circuit breaker 8 protects the circuit, and the circuit can be disconnected when the circuit is subjected to overload, short circuit and undervoltage protection.
When a single battery system is in an undervoltage state, the discharging relay 1 is disconnected, at the moment, the circuit is characterized in that the fuse 5 is connected with the charging diode 7 in series, the charging diode 7 is connected with the charging relay 2 in series, and the charging relay 2 is connected with the circuit breaker 8 in series, at the moment, because the charging diode 7 is connected in series in the control circuit, no current exists in the circuit, but the total voltage of the battery can be measured by P + \ P-, and at the moment, the battery system cannot discharge.
When a single battery system is in a full-charge state, the charging relay 2 is disconnected, at the moment, the circuit is formed in a manner that the fuse 5 is connected with the discharging diode 6 in series, the discharging diode 6 is connected with the discharging relay 1 in series, and the discharging relay 1 is connected with the circuit breaker 8 in series, at the moment, because the discharging diode 6 is connected in series in the control circuit, current flows from the positive pole of the power supply to the negative pole of the power supply, the total voltage of the battery can be measured by P + \ P-, and at the moment, the battery.
Meanwhile, when a plurality of systems are connected in parallel, one battery system falls behind, the pre-charging relay 3 is closed, the charging relay 2 and the discharging relay 1 are both disconnected, at the moment, the circuit is formed, the fuse 5 is connected with the pre-charging relay 3 in series, the pre-charging relay 3 is connected with the pre-charging resistor 4 in series, the pre-charging resistor 4 is connected with the circuit breaker 8 in series, the positive pole of the current charging source flows to the negative pole of the power source, and the battery is balanced to improve the consistency of the whole system.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A parallel high-voltage control box of a battery system comprises: the device comprises a discharging relay (1), a charging relay (2), a pre-charging relay (3), a pre-charging resistor (4), a fuse (5), a charging diode (6), a discharging diode (7), a circuit breaker (8) and a current sensor (9); discharge relay (1) and charging relay (2) establish ties, pre-charge relay (3) and pre-charge resistance (4) establish ties, it is parallelly connected with pre-charge relay (3) and pre-charge resistance (4) after establishing ties again to discharge relay (1) and charging relay (2), charging diode (6) are parallelly connected with discharging relay (1), discharging diode and charging relay (2) are parallelly connected, fuse (5) establish ties on the circuit, circuit breaker (8) establish ties on the circuit, current sensor (9) establish ties on the circuit.
2. The parallel high-voltage control box of the battery system according to claim 1, characterized in that: the discharging relay (1) is in a closed state, the charging relay (2) is in a closed state, and the pre-charging relay (3) is in an open state.
3. The parallel high-voltage control box of the battery system according to claim 1, characterized in that: the charging diode (6) is communicated from the anode (P +) of the switch power supply to the anode (B +) of the battery, and the discharging diode (7) is communicated from the anode (B +) of the battery to the anode (P +) of the switch power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100280.2A CN111181205A (en) | 2019-11-12 | 2019-11-12 | Parallel high-voltage control box of battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100280.2A CN111181205A (en) | 2019-11-12 | 2019-11-12 | Parallel high-voltage control box of battery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111181205A true CN111181205A (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911100280.2A Pending CN111181205A (en) | 2019-11-12 | 2019-11-12 | Parallel high-voltage control box of battery system |
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| CN (1) | CN111181205A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104014A (en) * | 2020-08-07 | 2020-12-18 | 深圳市拓邦锂电池有限公司 | Battery charging and discharging control method and device and battery |
| CN112510324A (en) * | 2020-11-24 | 2021-03-16 | 安徽和鼎机电设备有限公司 | Fork truck lithium battery pack parallel topological structure and charge-discharge control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203180596U (en) * | 2013-04-27 | 2013-09-04 | 惠州市亿能电子有限公司 | Protective circuit for UPS system |
| CN212137299U (en) * | 2019-11-12 | 2020-12-11 | 双登集团股份有限公司 | Parallel high-voltage control box of battery system |
-
2019
- 2019-11-12 CN CN201911100280.2A patent/CN111181205A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203180596U (en) * | 2013-04-27 | 2013-09-04 | 惠州市亿能电子有限公司 | Protective circuit for UPS system |
| CN212137299U (en) * | 2019-11-12 | 2020-12-11 | 双登集团股份有限公司 | Parallel high-voltage control box of battery system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104014A (en) * | 2020-08-07 | 2020-12-18 | 深圳市拓邦锂电池有限公司 | Battery charging and discharging control method and device and battery |
| CN112510324A (en) * | 2020-11-24 | 2021-03-16 | 安徽和鼎机电设备有限公司 | Fork truck lithium battery pack parallel topological structure and charge-discharge control method |
| CN112510324B (en) * | 2020-11-24 | 2022-11-08 | 安徽和鼎机电设备有限公司 | Forklift lithium battery pack parallel topology structure and charge-discharge control method |
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