CN107748334B - Feed net type nickel battery formation detection system - Google Patents
Feed net type nickel battery formation detection system Download PDFInfo
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- CN107748334B CN107748334B CN201710946254.6A CN201710946254A CN107748334B CN 107748334 B CN107748334 B CN 107748334B CN 201710946254 A CN201710946254 A CN 201710946254A CN 107748334 B CN107748334 B CN 107748334B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a grid-fed nickel battery formation detection system which comprises a bidirectional inverter, a double-loop switch type energy-saving constant current module in a PWM (pulse width modulation) mode and a series battery pack, wherein the bidirectional inverter is connected with mains supply, the other end of the bidirectional inverter is connected with a plurality of sets of double-loop switch type energy-saving constant current modules, the other ends of the sets of double-loop switch type energy-saving constant current modules are commonly connected with a CPU (central processing unit), and each double-loop switch type energy-saving constant current module is correspondingly connected with the series battery pack. The invention controls the constant current of the voltage stabilizing source according to the given current of the CPU controller, adopts the double-loop switch type energy-saving constant current module with PWM wave pulse width modulation mode, greatly reduces the heating value, saves the electric energy consumed by heat extraction, and when the device discharges the battery, the electric energy reversely passes through the double-loop switch type energy-saving constant current module and the bidirectional inverter to feed back the electric network with the power factor higher than 95 percent and the distortion rate lower than 5 percent, thereby greatly reducing the comprehensive energy consumption of the device and ensuring the electricity saving rate higher than 60 percent.
Description
Technical Field
The invention relates to the field of storage battery detection equipment, in particular to a feed-net type nickel battery formation detection system.
Background
With the policy strong support of new energy sources by countries, energy storage batteries for passenger cars such as spring bamboo shoots after rain are put on energy storage battery projects by a large number of marketing companies, and each investment on the batteries each year has a billion scale, and charging equipment occupies a considerable investment specific gravity, and due to the requirements of battery manufacturing processes, considerable energy conversion is carried out in the charging and discharging process flow.
According to incomplete statistics, the global electrochemical energy storage reaches 845.3MW in 2014, and the equivalent of the global electrochemical energy storage only occupies 0.8% of the equivalent of all the modes of energy storage, and the chemical energy storage has very broad prospects and lifting space, so that the requirements of charge and discharge equipment are also exploded, and in the environment of the current environment-friendly society, advanced energy-saving charge equipment is favored by people, wherein a feed-network type formation detection system is an advanced mode with the most remarkable energy-saving effect.
Disclosure of Invention
In order to overcome the problems, the invention provides a feed network type nickel battery formation detection system with low comprehensive energy consumption and high equipment electricity saving efficiency.
The technical scheme adopted by the invention is as follows:
the grid-fed nickel battery formation detection system comprises a bidirectional inverter, a double-loop switch type energy-saving constant current module in a PWM (pulse width modulation) mode and a series battery pack, wherein the bidirectional inverter is connected with mains supply, the other end of the bidirectional inverter is connected with a plurality of sets of double-loop switch type energy-saving constant current modules, the other ends of the sets of double-loop switch type energy-saving constant current modules are commonly connected with a CPU (central processing unit) controller, and each double-loop switch type energy-saving constant current module is correspondingly connected with one series battery pack. According to the given current of the CPU controller, the constant-voltage source is controlled to constant current, and a double-loop switch type energy-saving constant-current module with a PWM (pulse width modulation) mode is adopted, so that the heating value is greatly reduced, the electric energy consumed by heat extraction is saved, and compared with the traditional linear constant-voltage source, the energy saving reaches more than 30%. When the device discharges the battery, the current direction is opposite to the charging process, other circuit working states are consistent, electric energy reversely passes through the double-loop switch type energy-saving constant current module and the bidirectional inverter, and is fed back to the power grid with a power factor higher than 95% and a distortion rate lower than 5%, the comprehensive energy consumption is greatly reduced compared with the traditional linear power supply non-feed network type device, and the device electricity saving rate is higher than 60%.
As a further improvement to the technical scheme, the double-loop switch type energy-saving constant current module is provided with a differential mode sampling circuit and a Hall device for collecting current, the differential mode sampling circuit and the output end of the CPU controller are jointly connected with the input end of the PID regulating circuit, the output end of the Hall device, the output end of the PID regulating circuit and the output end of the triangular wave generating circuit are jointly connected with the input end of the PWM generating circuit, and PWM wave signals with adjustable output duty ratio drive the PWM wave driving module. The double-current closed-loop negative feedback circuit is adopted, the differential mode sampling circuit acquires a power resistance signal and then enters the PID regulating circuit to form current negative feedback, and the current acquired by the Hall device are jointly connected into the PWM generating circuit to drive the PWM wave driving module to charge and discharge the series battery pack, so that the constant current precision is ensured, the opening and current limiting are limited, and the opening impact is prevented.
As a further improvement to the technical scheme, the series battery pack is correspondingly connected with a plurality of sets of protection modules, the other ends of the sets of protection modules are commonly connected with the CPU controller, and the protection modules comprise a battery voltage acquisition board and a deposit protection relay, wherein the battery voltage acquisition board is used for acquiring the single voltage of the battery pack. In the detection process, the battery voltage acquisition board acquires the voltage of the series battery pack, and the battery pack meeting the cut-off condition is bypassed through the deposit protection relay to stop charging or discharging, so that the battery is protected, and the battery is prevented from being overcharged or overdischarged. Furthermore, the battery voltage acquisition board can adopt the MOSFET as a acquisition control switch, and the high-precision detection requirement can be met due to the fact that the MOSFET is high in speed, low in impedance and small in voltage drop.
As a further improvement to the technical scheme, the CPU controller is connected with an upper computer for remote control and local data recording.
As a further improvement to the technical scheme, the upper computer is connected with a database system, and the database system is connected with a cloud. The local data of the register protection can be uploaded to a database system and even uploaded to the cloud.
As a further improvement of the above technical solution, the CPU controller is connected to a bit machine for transmitting data and instructions.
The beneficial effects of the invention are as follows:
the grid-fed nickel battery formation detection system controls constant current of a voltage stabilizing source according to the given current of a CPU controller, adopts the double-loop switch type energy-saving constant current module with a PWM wave pulse width modulation mode, greatly reduces heat productivity, saves electric energy consumed by heat extraction, and when the equipment discharges a battery, the electric energy reversely passes through the double-loop switch type energy-saving constant current module and a bidirectional inverter to feed back the electric network with a power factor higher than 95% and a distortion rate lower than 5%, the comprehensive energy consumption of the equipment is greatly reduced, and the electricity saving rate is higher than 60%.
Drawings
The invention is described in further detail below with reference to the drawings and the detailed description.
FIG. 1 is a block diagram of the system architecture of the present invention.
Fig. 2 is a schematic diagram of a dual-loop switch type energy-saving constant current module.
Detailed Description
As shown in fig. 1, one of the embodiments provided by the invention is a grid-fed nickel battery formation detection system, which comprises a bidirectional inverter, a double-loop switch type energy-saving constant current module in a pulse width modulation mode of a Pulse Width Modulation (PWM) wave and a series battery pack, wherein the bidirectional inverter is connected with a mains supply, the other end of the bidirectional inverter is connected with twelve sets of double-loop switch type energy-saving constant current modules, the other ends of the twelve sets of double-loop switch type energy-saving constant current modules are commonly connected with a CPU (central processing unit) controller, the CPU controller controls current by adopting a high-precision DA, and each set of double-loop switch type energy-saving constant current modules is correspondingly connected with the series battery pack. According to the given current of the CPU controller, the constant-voltage source is controlled to constant current, and a double-loop switch type energy-saving constant-current module with a PWM (pulse width modulation) mode is adopted, so that the heating value is greatly reduced, the electric energy consumed by heat extraction is saved, and compared with the traditional linear constant-voltage source, the energy saving reaches more than 30%. When the device discharges the battery, the current direction is opposite to the charging process, other circuit working states are consistent, electric energy reversely passes through the double-loop switch type energy-saving constant current module and the bidirectional inverter, and is fed back to the power grid with a power factor higher than 95% and a distortion rate lower than 5%, the comprehensive energy consumption is greatly reduced compared with the traditional linear power supply non-feed network type device, and the device electricity saving rate is higher than 60%.
The principle of the double-loop switch type energy-saving constant current module is shown in fig. 2, a differential mode sampling circuit and a Hall device for collecting current are arranged, the differential mode sampling circuit and the output end of a CPU controller are jointly connected with the input end of a PID regulating circuit, the output end of the Hall device, the output end of the PID regulating circuit and the output end of a triangular wave generating circuit are jointly connected with the input end of a PWM generating circuit, and PWM wave signals with adjustable output duty ratio drive a PWM wave driving module. The double-current closed-loop negative feedback circuit is adopted, the differential mode sampling circuit acquires a power resistance signal and then enters the PID regulating circuit to form current negative feedback, the current and the current acquired by the Hall device are jointly connected into the PWM generating circuit to drive the PWM wave driving module to charge and discharge the series battery pack, the constant current precision is ensured, the opening and the current limiting are limited, and the opening impact is prevented.
The series battery pack is correspondingly connected with twelve sets of protection modules, the other ends of the twelve sets of protection modules are connected with the CPU controller together, and the protection modules comprise a battery voltage acquisition board and a deposit protection relay, wherein the battery voltage acquisition board is used for acquiring the single voltage of the battery pack. In the detection process, the battery voltage acquisition board acquires the voltage of the series battery pack, and the battery pack meeting the cut-off condition is bypassed through the deposit protection relay to stop charging or discharging, so that the battery is protected, and the battery is prevented from being overcharged or overdischarged. Furthermore, the battery voltage acquisition board can adopt the MOSFET as a acquisition control switch, and the high-precision detection requirement can be met due to the fact that the MOSFET is high in speed, low in impedance and small in voltage drop.
The CPU controller is connected with an upper computer used for remote control and local data check-in and a middle computer used for transmitting data and instructions, the upper computer is connected with a database system, the database system is connected with a cloud, and the local data which are registered and protected can be uploaded to the database system and even uploaded to the cloud.
When the device charges the battery, the commercial power is changed into a voltage stabilizing source through the bidirectional inverter to charge the series battery pack, the CPU controller gives current, and the double-loop switch type energy-saving constant current module with PWM wave pulse width modulation mode controls constant current according to the given current. The battery voltage acquisition board connected with the series battery pack acquires the single voltage of the battery pack, the cut-off condition is voltage upper and lower limits, set time, voltage drop and the like, the acquired battery voltage is compared with the cut-off condition, and the battery meeting the condition is bypassed by the deposit protection relay. Meanwhile, the acquired data can be registered and protected by the CPU controller and uploaded to an upper computer, and a server database or a cloud.
When the device discharges the battery, the working states of other circuits are completely consistent except that the current direction is opposite to the charging process, and the electric energy reversely passes through the double-loop switch type energy-saving constant current module and the bidirectional inverter to be fed back to the power grid with a power factor higher than 95% and a distortion rate lower than 5%.
The present invention is not limited to the above embodiments, but is merely preferred embodiments of the present invention, and the present invention should be construed as being limited to the above embodiments as long as the technical effects of the present invention are achieved by the same means.
Claims (5)
1. Feed net formula nickel battery formation detecting system, its characterized in that: the system comprises a bidirectional inverter, a double-loop switch type energy-saving constant current module in a PWM (pulse width modulation) mode and a series battery pack, wherein the bidirectional inverter is connected with mains supply, the other end of the bidirectional inverter is connected with a plurality of sets of double-loop switch type energy-saving constant current modules, the other ends of the plurality of sets of double-loop switch type energy-saving constant current modules are commonly connected with a CPU (central processing unit) controller, and each double-loop switch type energy-saving constant current module is correspondingly connected with one series battery pack;
the double-loop switch type energy-saving constant current module is provided with a differential mode sampling circuit and a Hall device for collecting current, the differential mode sampling circuit and the output end of the CPU controller are connected with the input end of the PID regulating circuit, the output end of the Hall device, the output end of the PID regulating circuit and the output end of the triangular wave generating circuit are connected with the input end of the PWM generating circuit, and PWM wave signals with adjustable output duty ratio drive the PWM wave driving module.
2. The feed network nickel battery formation detection system of claim 1, wherein: the series battery pack is correspondingly connected with a plurality of sets of protection modules, the other ends of the plurality of sets of protection modules are connected with the CPU controller together, and the protection modules comprise a battery voltage acquisition board and a deposit protection relay, wherein the battery voltage acquisition board is used for acquiring the single voltage of the battery pack.
3. The feed network nickel battery formation detection system of claim 1, wherein: and the CPU controller is connected with an upper computer for remote control and local data recording.
4. The feed network nickel battery formation detection system of claim 3, wherein: the upper computer is connected with a database system, and the database system is connected with a cloud.
5. The feed network nickel battery formation detection system of claim 1, wherein: the CPU controller is connected with the bit machine for transmitting data and instructions.
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| CN201710946254.6A CN107748334B (en) | 2017-10-12 | 2017-10-12 | Feed net type nickel battery formation detection system |
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| CN201710946254.6A CN107748334B (en) | 2017-10-12 | 2017-10-12 | Feed net type nickel battery formation detection system |
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| CN107748334B true CN107748334B (en) | 2023-08-29 |
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| CN112114267B (en) * | 2020-09-23 | 2022-02-01 | 广州擎天实业有限公司 | Method for detecting power-off parameters of multi-string and variable-string-number batteries |
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Effective date of registration: 20230726 Address after: 511400 201, 301, 401, 501, No.193-6, Jinlong Road, Dalong Street, Panyu District, Guangzhou, Guangdong Applicant after: Guangzhou Shengchuang Electronic Equipment Co.,Ltd. Address before: 528000 12 of No. 48-1, zone a, Southwest Park, Sanshui center science and Technology Industrial Zone, Foshan City, Guangdong Province (residence declaration) Applicant before: FOSHAN YINGDIAN TECHNOLOGY CO.,LTD. |
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