CN218733340U - Ripple-suppression storage battery pack online repairing device - Google Patents
Ripple-suppression storage battery pack online repairing device Download PDFInfo
- Publication number
- CN218733340U CN218733340U CN202222840983.2U CN202222840983U CN218733340U CN 218733340 U CN218733340 U CN 218733340U CN 202222840983 U CN202222840983 U CN 202222840983U CN 218733340 U CN218733340 U CN 218733340U
- Authority
- CN
- China
- Prior art keywords
- battery
- switch
- output end
- unit
- side switch
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The utility model relates to a restrain online prosthetic devices of storage battery of ripple belongs to battery technical field, and the ripple that produces when solving the online restoration of battery disturbs the ripple problem of operational equipment and environment. The device comprises: the battery impedance measuring unit is connected with N single batteries in the storage battery pack in a time-sharing manner; the input end of the battery grouping unit is connected with the output end of the battery impedance measuring unit, and the N single batteries are divided into N/2 single battery pairs according to the impedance of the N single batteries; a PWM generating unit connected to the battery grouping unit; and the input end of the synchronous control power amplification unit is connected with the PWM output interface of the processor, the first output end and the second output end of the synchronous control power amplification unit are connected to the first single battery pair to the Nth/2-th single battery pair in a time-sharing mode in an alternating mode, and the high-frequency oscillation waveform signals are converted into two high-frequency oscillation waveforms with opposite waveform directions and equal amplitudes. The ripple effect on the battery pack produced by the superposition of the high-frequency oscillation waveforms of equal amplitude and opposite phase is close to zero.
Description
Technical Field
The utility model relates to a battery technical field especially relates to an online prosthetic devices of storage battery who restraines ripple.
Background
A lead-acid accumulator is an accumulator whose electrodes are made of lead and its oxide and whose electrolyte is sulfuric acid solution. Lead-acid storage batteries have become a storage battery variety with high yield and wide application at present due to the characteristics of low price, easily available raw materials, reliable performance, easy recovery, suitability for large-current discharge and the like. The lead-acid storage battery is widely applied to various fields of automobiles, communication, electric power, railways, electric vehicles and the like, but the short service life of the lead-acid storage battery is a main short plate, and the main research direction of the storage battery repair technology is to thoroughly solve the fatal defects of short service life and rapid capacity reduction of the lead-acid storage battery caused by vulcanization.
The failure of the lead-acid storage battery is greatly related to factors such as a generation process, a use mode, environment and the like. The failure of the battery is that the internal resistance of the battery is increased along with the vulcanization due to water loss, and the charging process generates heat after the capacitance of the battery is reduced, so that the softening, corrosion and bulging of a polar plate occur when the density of electrolyte is too high after the water loss and the vulcanization are accelerated to a certain degree until the battery is scrapped, and the vulcanization (lead sulfate crystallization) is the root cause of the failure of the battery.
Causes of battery vulcanization include the following improper use: large current discharge, small current deep discharge, untimely charge, long-term shelf and no discharge under long-time floating charge conditions.
Lead sulfate is formed in electrolyte when the lead-acid storage battery works in a discharging state, crystallization occurs when the concentration of the lead sulfate reaches a certain threshold value, and the crystallized lead sulfate can not participate in a circulation reaction any more, so that the capacity of the lead-acid storage battery is reduced.
The lead-acid storage battery is widely applied to power storage in the industries of electricity, military affairs, traffic, communication and finance, data centers and base stations and standby power supplies of various devices operating in severe environments, and the manual maintenance cost of the storage battery is high, so that the lead-acid storage battery has wide market and technical requirements on online maintenance of the battery and prolonging the service life through sulfur removal; the on-line maintenance sulfur removal technology of the lead-acid storage battery has huge market space and profound social and economic significance in the aspects of green environmental development and social energy conservation.
The method for maintaining the lead-acid storage battery vulcanization is high-frequency resonance repair, namely, high-frequency resonance current is generated to generate resonance with vulcanized lead sulfate crystals, so that the lead sulfate crystals are broken up to participate in the circulation reaction again, and the purpose of recovering the capacity of the storage battery is finally achieved.
According to the principles of atomic physics and solid physics, sulfur ions have 5 different energy level states, and ions usually in a metastable energy level state tend to exist by migrating to the most stable covalent bond energy level. At the lowest energy level (i.e., covalent bond energy level state), sulfur exists in the form of a cyclic molecule containing 8 atoms, and the 8 atom cyclic molecular mode is a stable combination and is difficult to break up, forming an unpredictable sulfation-vulcanization of the battery. This happens many times and a layer of lead sulphate crystals forms, like the insulating layer.
To break the bonds of these sulfate layers, the energy levels of the atoms are raised to a level where the outer atom-charged electrons are activated to the next higher energy band, releasing the bonds between the atoms. Each specific energy level has a unique resonance frequency and must be supplied with energy to enable the activated molecule to migrate to a higher energy level, too low energy to meet the energy requirement for the transition, but too high energy may cause the atom that has been unbound for transition to be in an unstable state and to fall back to the original energy level. Therefore, it is necessary to remove the constraint through multiple resonances to reach the most active energy level state without returning to the original energy level, and thus, the energy is converted into free ions dissolved in the electrolyte to participate in the electrochemical reaction.
When repairing lead-acid batteries, the corresponding resonance frequencies of crystals of different lead sulfate grain sizes will also be different. If a pulse current with steep leading edge is adopted, the frequency analysis is carried out by utilizing Fourier series, so that the pulse can generate rich harmonic components, the amplitude of the low-frequency part of the pulse is large, and the amplitude of the high-frequency part of the pulse is small. Thus, the large lead sulfate crystals obtain large energy, and the small lead sulfate crystals obtain small energy. The principle of the high-frequency oscillation waveform repairing and maintaining technology is that the high-frequency oscillation waveform energy is used for impacting lead sulfate coarse grains, so that the pulse frequency of the lead sulfate coarse grains and the inherent frequency of lead sulfate crystals generate resonance, when the energy is enough, the lead sulfate crystals which cannot be reduced by charging in the actual use environment of the storage battery are smashed and dissolved in sulfuric acid electrolyte, and the lead sulfate crystals participate in chemical reaction again, so that the service life of the storage battery is prolonged, and the safety and the reliability of a power supply system are improved.
In the existing on-line storage battery whole-pack repairing process, a high-frequency oscillation waveform is applied to a running battery pack, and in order to achieve the repairing purpose, the high-frequency oscillation waveform needs to have the characteristics that: 1. sufficient energy, 2, rich frequency characteristics. The high-frequency oscillation inevitably generates electromagnetic ripples due to the inherent waveform characteristics, and creates an operation safety hazard for other devices connected to the battery loop.
In order to reduce the influence of ripple interference on operating equipment and environment, manufacturers reduce the ripple value by reducing the amplitude of a high-frequency oscillation waveform, but the reduction of the amplitude energy of a pulse waveform causes that the large-particle lead sulfate crystal cannot provide enough crushing energy, so that the repairing effect cannot be achieved; manufacturers also reduce the ripple effect by adding a filter circuit to the equipment, but due to the above characteristics, the high-frequency oscillation pulse waveform is composed of waveforms with different frequencies and amplitudes, and the amplitude of the low-frequency part is large, and the amplitude of the high-frequency part is small. Therefore, the energy obtained by the large lead sulfate crystals is large, the energy obtained by the small lead sulfate crystals is small, the high-frequency oscillation pulse waveform is complex, and ripples generated by the pulse waveform cannot be completely filtered by a simple filter circuit. Therefore, how to technically innovate and perfect ripple interference suppression derived from the current high-frequency oscillation waveform repairing method is a key technical bottleneck restricting the popularization and development of online maintenance technology, and indirectly causes the results that a large amount of storage battery resources cannot play a hundred percent of roles and the maintenance and repair costs are high, which is contrary to the current social development ideas of environmental protection and energy conservation.
SUMMERY OF THE UTILITY MODEL
In view of the above analysis, the present invention aims to provide an online repairing device for a storage battery pack for suppressing ripples, which is used to solve the problem of ripple interference of ripples generated during online repairing of the existing storage battery to the running equipment and environment.
The purpose of the utility model is mainly realized through the following technical scheme:
an online repairing device for a storage battery pack for inhibiting ripples comprises: the battery impedance measuring unit is connected with the N single batteries in the storage battery pack in a time-sharing manner; the input end of the battery grouping unit is connected with the output end of the battery impedance measuring unit and is used for dividing the N single batteries into N/2 single battery pairs according to the impedance of the N single batteries; a PWM generating unit, the input end of which is connected with the battery grouping unit; and the input end of the synchronous control power amplification unit is connected with the output end of the PWM generation unit, and the first output end and the second output end of the synchronous control power amplification unit are connected to the first single battery pair to the Nth/2 single battery pair in a time-sharing manner in an alternating mode and are used for converting the high-frequency oscillation waveform signals into two high-frequency oscillation waveforms with opposite waveform directions.
The beneficial effect of above-mentioned scheme is as follows: the storage battery pack online repairing device for inhibiting the ripples carries out impedance measurement on each battery in the whole battery pack, and simultaneously repairs a pair of batteries with matched impedance, so that the repairing efficiency of the whole battery pack is improved, and meanwhile, because the amplitudes of applied high-frequency oscillation waveforms are equal and have opposite phases, the ripple effect generated on the whole battery pack by superposition is close to zero, so that the technical problem of ripple interference influence generated by online maintenance of the lead-acid storage battery is thoroughly solved.
Based on the further improvement of the above scheme, the ripple-suppressed storage battery pack online repair device further comprises a control signal generation unit, wherein the battery impedance measurement unit comprises a constant current source and a switching transistor, wherein the constant current source has an anode connected to a source of the switching transistor and a cathode serving as a second output end of the battery impedance measurement unit and is used for generating a current with a specific amplitude and a specific frequency; and the grid electrode of the switching transistor is connected with the first output end of the control signal generation unit, and the drain electrode of the switching transistor is used as the first output end of the battery impedance measurement unit, wherein the switching transistor is switched on or switched off according to the pulse control signal received by the grid electrode, so that the switching transistor generates a special frequency current.
Based on the further improvement of above-mentioned scheme, battery impedance measuring unit still includes N group battery impedance measurement switches, and every group battery impedance measurement switch includes corresponding positive pole side battery impedance measurement switch and negative pole side battery impedance measurement switch, and wherein, every battery cell, its positive pole is connected to battery impedance measuring unit's first output via the positive pole side battery impedance measurement switch in a group battery impedance measurement switch to and its negative pole is connected to battery impedance measuring unit's second output via the negative pole side battery impedance measurement switch in the same group battery impedance measurement switch.
Based on a further improvement of the above solution, the control signal generating unit is configured to synchronously output a measurement switch control signal via a first output terminal thereof; the N groups of battery impedance measuring switches are used for switching on each group of battery impedance measuring switch in the N groups of battery impedance measuring switches in a time-sharing mode based on the measuring switch control signal so as to connect the battery impedance measuring units to each single battery switched on by the battery impedance measuring switches in a time-sharing mode, wherein the N groups of battery impedance measuring switches correspond to the N single batteries one to one.
Based on the further improvement of the above scheme, the synchronous control power amplifier unit comprises: the PWM power amplifier comprises an inverter circuit, a first isolation power amplifier module, a forward following circuit and a second isolation power amplifier module, wherein the input end of the inverter circuit is connected with the output end of the PWM generating unit, and the output end of the inverter circuit is connected to the input end of the first isolation power amplifier module; the first isolation power amplification module is used for isolating and amplifying the high-frequency oscillation waveform signals with opposite phases and equal amplitudes and outputting a first high-frequency oscillation waveform signal through an output end of the first isolation power amplification module; the input end of the forward following circuit is connected with the output end of the PWM generating unit, and the output end of the forward following circuit is connected to the input end of the first isolation power amplifier module; and the second isolation power amplification module is used for isolating and amplifying the high-frequency oscillation waveform signals with the same phase and the same amplitude, and outputting a second high-frequency oscillation waveform signal through the output end of the second isolation power amplification module.
Based on a further improvement of the above scheme, the forward follower circuit includes a first operational amplifier and a first resistor, wherein an inverting input terminal of the first operational amplifier is connected to an output terminal of the first operational amplifier; a non-inverting input terminal of the first operational amplifier is connected to an output terminal of the PWM generation unit via the first resistor.
Based on a further improvement of the above-described aspect, the inverting circuit includes a second operational amplifier, a second resistor, and a third resistor, wherein a non-inverting input terminal of the second operational amplifier is grounded, an inverting input terminal of the second operational amplifier is connected to the output terminal of the PWM generating unit via the second resistor, and an output terminal of the second operational amplifier is connected to the inverting input terminal of the second operational amplifier via the third resistor.
Based on a further improvement of the above-mentioned scheme, the synchronous control power amplifier unit further includes a first N groups of switch pairs and a second N groups of switch pairs, each switch pair of the first N groups of switch pairs includes a first positive side switch and a first negative side switch, and each switch pair of the second N groups of switch pairs includes a second positive side switch and a second negative side switch, wherein each cell of the storage battery pack is connected to the output terminal of the first isolated power amplifier module via the first positive side switch and the first negative side switch of one group of switch pairs of the first N groups of switch pairs, and connected to the output terminal of the second isolated power amplifier module via the second positive side switch and the second negative side switch of one group of switch pairs of the second N groups of switch pairs.
Based on the further improvement of the above scheme, the battery grouping unit is configured to compare and pair impedances of N single batteries in the storage battery pack, and use two single batteries with the same or similar impedances as a single battery pair, where any one of the first single battery pair to the N/2 th single battery pair includes a first single battery and a second single battery.
Based on a further improvement of the above solution, the control signal generating unit, during a first repair of a single battery pair, outputs a first selection switch control signal via a second output terminal thereof, the first positive side switch and the first negative side switch of the first N groups of switch pairs connected to the first single battery are turned on according to the first selection switch control signal, so that the first single battery is connected to an output terminal of the first isolation power amplifier module via the turned-on first positive side switch and the turned-on first negative side switch, and the second positive side switch and the second negative side switch of the second N groups of switch pairs connected to the second single battery are turned on according to the first selection switch control signal, so that the second single battery is connected to an output terminal of the second isolation module via the turned-on second positive side switch and the turned-on second negative side switch; and the control signal generation unit outputs a second selection switch control signal through a second output end of the same single battery pair in the process of performing the next second repair on the same single battery pair, the second positive side switch and the second negative side switch connected with the first single battery in the second N groups of switch pairs are switched on according to the second selection switch control signal, so that the first single battery is connected to the output end of the second isolation power amplifier module through the switched-on second positive side switch and the switched-on second negative side switch, and the first positive side switch and the first negative side switch connected with the second single battery in the first N groups of switch pairs are switched on according to the second selection switch control signal, so that the second single battery is connected to the output end of the first isolation power amplifier module through the switched-on first positive side switch and the switched-on first negative side switch.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
1. the storage battery pack online repairing device for inhibiting the ripples carries out impedance measurement on each battery in the whole battery pack, and repairs two batteries with similar impedance as a pair, so that the repairing efficiency of the whole battery pack is improved, and meanwhile, because the amplitudes of applied high-frequency oscillation waveforms are equal and have opposite phases, the ripple effect generated on the whole battery pack by superposition is close to zero, so that the technical problem of ripple interference influence generated by online maintenance of a lead-acid storage battery is thoroughly solved.
2. The storage battery pack online repair device for inhibiting the ripples can properly improve the amplitude of low-frequency pulses without generating large ripple interference due to the circuit design characteristics that the amplitudes of high-frequency oscillation waveforms applied during online maintenance are equal and the phases are opposite, and the circuit design characteristics correspond to a pair of batteries with large lead sulfate crystal volume and high internal resistance, so that the technical advantage of wider maintenance range is provided for the whole group of online maintenance technology.
3. The storage battery pack online repair device for inhibiting the ripple waves solves the problem that the adopted hardware frequency wave method cannot adapt to and completely solve the generation of ripple waves and the ripple interference on a system and an environment due to different amplitude frequency waveform characteristics provided for large crystals and small crystals because of the circuit design characteristics that the high-frequency oscillation waveform amplitude applied during online maintenance is equal and the phases are opposite. The waveforms applied to a pair of batteries to be repaired are synchronously applied to the batteries with the same amplitude and opposite phases no matter how the frequency and amplitude values change, and the ripple superposition effect of the whole battery pack is maintained at an extremely low level.
The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
Fig. 1 is a block diagram of an online repairing device for a storage battery pack for suppressing ripples according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a cell impedance measuring unit of an online repairing device for a storage battery pack for inhibiting ripples according to an embodiment of the present invention;
fig. 3 is a schematic diagram of typical characteristics of a high-frequency oscillation waveform of a battery impedance measurement of an online repairing device for a ripple-suppressed storage battery pack according to an embodiment of the present invention; and
fig. 4 is a schematic diagram of a synchronous control power amplifier unit of an online repairing apparatus for a ripple-suppression storage battery pack according to the embodiment of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.
Referring to fig. 1, an embodiment of the present invention discloses an online repairing device for a battery pack for suppressing ripples, including: a battery impedance measuring unit 100 connected to the N battery cells in the battery pack 130 in a time-sharing manner; a battery grouping unit 112, an input end of which is connected with an output end of the battery impedance measuring unit, for dividing the N single batteries into N/2 single battery pairs according to the impedance of the N single batteries; a PWM generating unit 114, an input end of which is connected to the battery grouping unit 112, for generating high-frequency oscillation waveform signals with different amplitudes and frequencies according to the impedance of N/2 single battery pairs; and a synchronous control power amplifier unit 120, an input end of which is connected to the output end of the PWM generating unit 114, and a first output end and a second output end of which are time-divisionally connected to the first to N/2 th cell pairs in an alternating manner, for converting the high-frequency oscillation waveform signal into two high-frequency oscillation waveforms with opposite waveform directions.
Compared with the prior art, the online repairing device for the storage battery pack for inhibiting the ripples, provided by the embodiment, carries out impedance measurement on each battery in the whole battery pack, and simultaneously repairs a pair of batteries with matched impedance, so that the repairing efficiency of the whole battery pack is improved, and meanwhile, because the amplitudes of applied high-frequency oscillation waveforms are equal and opposite in phase, the ripple effect generated on the whole battery pack by superposition is close to zero, so that the technical problem of ripple interference influence generated by online maintenance of a lead-acid storage battery is thoroughly solved.
Hereinafter, referring to fig. 1, 2 and 4, a ripple-suppressed battery pack online repair device according to an embodiment of the present invention will be described in detail. Referring to fig. 1, the apparatus for on-line repairing a ripple-suppressed secondary battery pack includes a battery impedance measuring unit 100, a processor (e.g., CPU, MCU, etc.) 110, a synchronous control power amplifying unit 120, and a secondary battery pack 130. The processor 110 includes a battery grouping unit 112, a PWM generating unit 114, and a control signal generating unit 116.
The cell impedance measuring unit 100 is connected to N cells in a battery pack (i.e., the entire battery unit 130) in a time-sharing manner. The battery impedance measuring unit 100 is used to measure the impedance of each unit battery via the analog quantity acquisition interface of the battery grouping unit 112. Specifically, referring to fig. 2, the battery impedance measurement unit 100 includes a constant current source HI and a switching transistor. The anode of the constant current source is connected to the source of the switching transistor, and the cathode of the constant current source is used as the second output end of the battery impedance measuring unit for generating current with specific amplitude and frequency. A gate of the switching transistor is connected to a first output terminal of the control signal generating unit 116, and a drain of the switching transistor serves as a first output terminal of the battery impedance measuring unit 100, wherein the switching transistor is turned on or off according to a pulse control signal received by the gate, so that the switching transistor generates a specific frequency current.
The battery impedance measurement unit 100 also includes N sets of battery impedance measurement switches, each set of battery impedance measurement switches including corresponding positive side battery impedance measurement switches K1+, K2+, …, and KN +, and negative side battery impedance measurement switches K1-, K2-, …, and KN-. The positive pole of each cell is connected to the first output terminal of the battery impedance measuring unit 100 via a positive pole side battery impedance measuring switch K1+, K2+, …, or KN + in a set of battery impedance measuring switches, and the negative pole of each cell is connected to the second output terminal of the battery impedance measuring unit 100 via a negative pole side battery impedance measuring switch K1-, K2-, …, or KN-in the same set of battery impedance measuring switches.
And the N groups of battery impedance measuring switches are used for switching on each group of battery impedance measuring switch in the N groups of battery impedance measuring switches in a time-sharing mode based on the measuring switch control signal output by the first output end of the control signal generating unit so as to connect the battery impedance measuring unit 100 to each single battery with the switched-on battery impedance measuring switches in the time-sharing mode. The N groups of battery impedance measurement switches correspond to the N single batteries one by one. For example, a first set of battery impedance measurement switches K1+ and K1-corresponds to battery 1, a second set of battery impedance measurement switches K2+ and K2-corresponds to batteries 2, …, and an Nth set of battery impedance measurement switches K2+ and K2-corresponds to battery N.
The input end of the battery grouping unit 112 is connected to the output end of the battery impedance measuring unit, and is configured to divide the N unit batteries into N/2 unit battery pairs according to the impedances of the N unit batteries, generate high-frequency oscillation waveform signals with different amplitudes and frequencies according to the impedances of the N/2 unit battery pairs, and output the high-frequency oscillation waveform signals with different amplitudes and frequencies via the PWM output interface. The processor 110 includes a switching signal interface a, a switching signal interface B, an analog quantity acquisition interface, and a PWM output interface. The processor 110 is configured to generate a measurement switch control signal and a pulse control signal and synchronously output the measurement switch control signal and the pulse control signal via a switch signal interface a (i.e., a first output terminal of the control signal generation unit 116). The processor 110 generates a first selection switch control signal and outputs the first selection switch control signal via the switch signal interface B thereof (i.e., the second output terminal of the control signal generation unit 116) in the process of first repairing one of the battery cell pairs. The control signal generating unit 116 generates a second selection switch control signal and outputs the second selection switch control signal through the switch signal interface B thereof in the process of performing the next second repair on the same single battery pair. The battery grouping unit 112 is configured to compare and pair impedances of N single batteries in the battery pack, and use two single batteries with the same or similar impedances as a single battery pair and store position information of each single battery pair, where any single battery pair from a first single battery pair to an N/2 th single battery pair includes a first single battery and a second single battery.
And the input end of the synchronous control power amplification unit 120 is connected with the PWM output interface (i.e., the output end of the PWM generation unit 114) of the processor 110, and the first output end and the second output end of the synchronous control power amplification unit are connected to the first single battery pair to the N/2 th single battery pair in a time-sharing manner in an alternating manner, so as to convert the high-frequency oscillation waveform signal into two high-frequency oscillation waveforms with opposite waveform directions.
Referring to fig. 4, the synchronous control power amplifying unit 120 includes: the power amplifier comprises an inverter circuit, a first isolation power amplifier module PA1, a forward following circuit and a second isolation power amplifier module PA2. The input end of the inverter circuit is connected with the output end of the PWM generating unit 114, and the output end of the inverter circuit is connected to the input end of the first isolation power amplifier module. The first isolation power amplifier module PA1 is used for isolating and amplifying the high-frequency oscillation waveform signals with opposite phases and equal amplitudes, and outputting the first high-frequency oscillation waveform signals through the output end of the first isolation power amplifier module PA 1. The input end of the forward following circuit is connected with the output end of the PWM generating unit 114, and the output end of the forward following circuit is connected to the input end of the first isolation power amplifier module. The second isolation power amplifier module PA2 is used for isolating and amplifying the high-frequency oscillation waveform signals with the same phase and the same amplitude, and outputting the second high-frequency oscillation waveform signals through the output end of the second isolation power amplifier module PA2.
The forward follower circuit includes a first operational amplifier U12B and a first resistor R1. The inverting input terminal of the first operational amplifier U12B is connected to the output terminal of the first operational amplifier U12B; the non-inverting input terminal of the first operational amplifier U12B is connected to the output terminal of the PWM generation unit 114 via the first resistor R1. The inverter circuit includes a second operational amplifier U12A, a second resistor R2, and a third resistor R3. The non-inverting input terminal of the second operational amplifier U12A is grounded, the inverting input terminal of the second operational amplifier U12A is connected to the output terminal of the PWM generation unit 114 via a second resistor R2, and the output terminal of the second operational amplifier U12A is connected to the inverting input terminal of the second operational amplifier via a third resistor R3.
The synchronous control power amplification unit 120 further comprises a first N sets of switch pairs and a second N sets of switch pairs, each of the first N sets of switch pairs K1-1, K2-1, …, and KN-1 comprising a first positive side switch K1-1+, K2-1+, …, or KN-1+ and a first negative side switch K1-1-, K2-1-, …, or KN-1-, and each of the second N sets of switch pairs K1-2, K2-2, …, and KN-2 comprising a second positive side switch K1-2+, K2-2+, …, or KN-2+ and a second negative side switch K1-2-, K2-2-, …, or KN-2-. Each single battery in the storage battery pack is connected to the output end of the first isolation power amplifier module PA1 through a first positive side switch and a first negative side switch of one of the first N groups of switch pairs K1-1, K2-1, … and KN-1, and is connected to the output end of the second isolation power amplifier module PA2 through a second positive side switch and a second negative side switch of one of the second N groups of switch pairs K1-2, K2-2, … and KN-2.
In the process of first repairing one single battery pair, a first positive side switch K1-1+, K2-1+, … or KN-1+ and a first negative side switch K1-1-, K2-1-, … or KN-1-in the first N groups of switch pairs K1-1, K2-1, … and KN-1, which are connected with the first single battery, are switched on according to a first selection switch control signal, so that the first single battery is connected to the output end of the first isolation module PA1 through the switched-on first positive side switch and the switched-on first negative side switch, and a second positive side switch K1-2+, K2-2+, …, or KN-2+ and a second negative side switch K1-2-, K2-2-, …, or KN-2-, connected to the second cell, of the second N groups of switch pairs K1-2, K2-2, …, and KN-2, are turned on according to the first selection switch control signal, so that the second cell is connected to the output terminal of the second isolated power amplifier module PA2 via the turned-on second positive side switch and second negative side switch.
The second positive side switch K1-2+, K2-2+, … or KN-2+ and the second negative side switch K1-2-, K2-2-, … or KN-2-of the second N-group switch pairs K1-2, K2-2, … and KN-2 connected to the first unit cell are turned on according to the second selection switch control signal, so that the first unit cell is connected to the output terminal of the second isolation power amplifier module PA2 through the turned-on second positive side switch and the second negative side switch, and the first positive side switch K1-1+, K2-1+, … or KN-1+ and the first negative side switch K1-1-, K2-1-, … or KN-1-in the first N groups of switch pairs K1-1, K2-1, 3534 and KN-1 connected with the second single battery are switched on according to the second selection switch control signal, so that the second single battery is amplified and connected to the output end of the first isolation module PA1 through the switched-on first positive side switch K1-1+, K2-1+, … or KN-1+ and the first negative side switch K1-1-, K2-1-, … or KN-1-.
Hereinafter, referring to fig. 1 to 4, a ripple-suppressed storage battery pack online restoration device according to an embodiment of the present invention is described in detail by way of a specific example.
The storage battery pack online repairing device for inhibiting the ripples solves the problem of ripple interference of the ripples generated during online repairing of the existing storage battery on running equipment and environment, and fundamentally solves the safety of online maintenance of the storage battery on the use of the equipment.
The online repairing device for the storage battery pack for inhibiting ripples comprises a battery impedance testing unit 100, a processor 110, a synchronous control power amplification unit 120 and a whole battery unit 130. Firstly, the impedance measurement unit 100 measures the impedance of different batteries in the whole battery set, screens out batteries with similar impedance, performs grouping and pairing, repairs two batteries with the same or similar impedance as a pair, generates a high-frequency oscillation waveform signal through the processor 110, applies the high-frequency oscillation waveform signal to the high-frequency oscillation waveform synchronous control power amplification unit 120, synchronously applies the high-frequency oscillation waveform to the two paired batteries for repair, and synchronously controls the power amplification unit 120 to ensure that pulse waveforms with equal amplitude and opposite phases are simultaneously output to a pair of batteries, so that the circuit design effect that the integrally generated ripple wave is close to zero ripple wave output is achieved. The processor 110 controls the application of the high-frequency oscillation waveform to all the paired batteries of the whole battery group for repair in a time-sharing manner until the whole repair effect is completed.
The beneficial effects of the above technical scheme are as follows: the battery impedance testing unit 100 and the synchronous control power amplifier unit 120 of the device are connected with the positive electrode and the negative electrode of each single battery in the whole battery set by controllable electronic or mechanical switches, the battery impedance measuring function and the synchronous control power amplifier output function are both time-sharing control input and are completely disconnected with each single battery when not in use, no electrical connection exists, the device is different from the situation that other on-line battery maintenance devices are always connected to a battery line, and the interference influence of the static operation of a repair system on the environment and other devices connected to the battery is reduced to the greatest extent.
The battery impedance testing unit 100 is used for reducing interference of pulse signals to the environment and equipment powered by a connected battery when impedance is measured, connecting lines from the battery impedance testing unit 100 to positive and negative electrodes of the battery are twisted pairs with shielding layers and grounded, and applied alternating current signals are constant current signals with amplitude of 1.2A and frequency of 110 Hz.
The battery impedance measuring unit 100 generates a measuring signal through double switch control, the constant current source switch KZ is controlled by a processor 110 to be conducted by a control pulse, the pulse current of the constant current source is output, and the battery impedance measuring switches K1-KN are responsible for applying the pulse current signal to the battery 1-battery N in a time-sharing manner; synchronously, the processor 110 initiates analog signal acquisition at the same time that a pulsed current is applied across the battery. Constant current source switch pulse, battery impedance measurement switch control signal and analog acquisition action controlled by processor 110 are started at the same time to ensure signal synchronism. Furthermore, when the impedance of one battery is measured, other batteries in the whole battery set are in a disconnected state, so that the constant current signals of all the single batteries are mutually disconnected when being applied, and signal shunt or signal interference cannot be generated.
Referring to fig. 1, the ripple-suppressed storage battery pack online repairing apparatus includes a battery impedance testing unit 100, a processor 110, a synchronous control power amplifying unit 120, and an entire battery unit 130. Firstly, the battery impedance measuring unit 100 measures the impedance of different batteries in the whole battery unit 130, screens out batteries with similar impedance, performs grouping pairing, repairs two batteries with the same or similar impedance as a pair, generates a high-frequency oscillation waveform signal through the processor 110, applies the high-frequency oscillation waveform signal to the high-frequency oscillation waveform synchronous control power amplification unit 120, synchronously applies the high-frequency oscillation waveform to the two paired batteries for repairing, and synchronously controls the power amplification unit 120 to ensure that pulse waveforms with equal amplitudes and opposite phases are simultaneously output to the pair of batteries, so as to achieve the circuit design effect that the integrally generated ripple wave is close to zero ripple wave output. The processor 110 controls the application of the high-frequency oscillation waveform to all the paired batteries of the whole battery group for repair in a time-sharing manner until the whole repair effect is completed.
The beneficial effects of the above technical scheme are as follows: the battery impedance testing unit 100, the synchronous control power amplifier unit 120 and the positive and negative poles of each single battery of the unit 130 in the whole battery set are connected by adopting a controllable electronic or mechanical switch, the battery impedance measuring function and the synchronous control power amplifier output function are all time-sharing control input, and are completely disconnected with each single battery when not in use, so that no electrical connection exists, the device is different from the situation that other on-line battery maintenance devices are always connected to a battery line, and the interference influence of the static operation of a repair system on the environment and other devices connected to the battery is reduced to the maximum extent.
Referring to fig. 2, in order to reduce the interference of the pulse signal to the environment and the connected battery-powered device when measuring impedance, the connection lines from the battery impedance testing unit 100 to the positive and negative electrodes of the battery are twisted pair lines with shielding layers and grounded, and the applied ac signal is a constant current signal with an amplitude of 1.2A and a frequency of 110 Hz. The processor 110 controls the constant current source switch KZ and the battery impedance measuring switches K1-KN through the switch signal interface a, and the processor 110 is connected to the output signal of the constant current source through the shielded twisted pair through the analog quantity acquisition interface.
Referring to fig. 2, the battery impedance measuring unit 100 generates a measurement signal by dual switching control, the constant current source switch KZ is turned on after a control pulse is sent from the processor 110, a pulse current of the constant current source is output, and the battery impedance measuring switches K1-KN perform selective turn-on of the battery 1-the battery N; applying the pulse current signal to the battery 1-the battery N in a time-sharing manner; synchronously, the processor 110 initiates analog signal acquisition at the same time that a pulsed current is applied across the battery. Constant current source switch pulse, battery impedance measurement switch control signal and analog acquisition action controlled by processor 110 are started at the same time to ensure signal synchronism. Furthermore, when the impedance of one battery is measured, other batteries in the whole battery set are in a disconnected state, so that the constant current signals of all the single batteries are mutually disconnected when being applied, and signal shunt or signal interference cannot be generated.
After the impedance measurement of each battery cell in the entire battery unit 130 is completed, the processor 110 performs software comparison analysis on the impedance of each battery cell, and takes two batteries with the closest impedance as a pair and stores the position information of the relevant batteries, so that the entire battery pack consisting of N batteries can be divided into N/2 battery pairs.
Referring to fig. 4, the processor 110 is connected to a PWM signal input terminal of the synchronous control power amplification unit 120 through a PWM output interface; the processor 110 is connected to the pulse waveform signal selection switches K1-1, K1-2, K2-1, and K2-2.. KN-1 and KN-2 through the switch signal interface B to control whether the switches are turned on or not; one end of each pulse waveform signal selection switch K1-1 and K1-2 is connected to the positive electrode and the negative electrode of the battery 1 in the whole battery unit 130 in parallel, the other end of the K1-1 is connected to the signal output of the isolation power amplifier module PA1, and the other end of the K1-2 is connected to the signal output of the isolation power amplifier module PA 2; further, K2-1, K2-2.. KN-1 and KN-2 are connected according to the same principle.
Referring to fig. 3, in the battery pack paired according to different impedances, the amplitude and frequency of the waveform of the applied high frequency oscillation are different due to the difference in impedance, and these pieces of information are stored in the memory of the processor 110 according to the measurement result of the battery impedance each time. The processor 110 outputs the corresponding amplitude and frequency high frequency oscillation waveform to the PWM signal input terminal of the synchronous control power amplifier unit 120 according to the stored information. The high-frequency oscillation waveform is composed of waveforms with different frequencies and amplitudes, the amplitude of the low-frequency part is large, and the amplitude of the high-frequency part is small. Therefore, the energy obtained by the large lead sulfate crystals is large, the energy obtained by the small lead sulfate crystals is small, crystals in different forms can be crushed, and the crystals participate in chemical reaction again, so that the aim of repairing is fulfilled.
Referring to fig. 4, a pwm signal input terminal is connected to a pin 5 of U12B of the operational amplifier chip through a resistor R1, and pins 6 and 7 of U12B are connected together to form a forward follower circuit; and a pin 7 of the U12B is connected to the isolation power amplifier module PA2, and the signal of the pin 7 is completely consistent with that of the PWM pulse waveform signal terminal. The PWM signal input terminal is connected to a pin 2 of a U12A of the operational amplifier chip through a resistor R2, and the pins 2 and 1 of the U12A are connected together through a resistor R3 to form an inverse circuit; and a pin 1 of the U12A is connected to an isolation power amplifier module PA, and the phase of a pin 1 signal is opposite to that of a PWM pulse waveform signal terminal, and the amplitude of the pin 1 signal is equal to that of the PWM pulse waveform signal terminal. The forward following circuit and the reverse circuit ensure that the hardware transmission delay time of the signals is consistent and the phase difference is 180 degrees; the reverse circuit adopts an amplification factor of 1.0, and signal amplitude is ensured to be equal.
The isolation power amplifier modules PA1 and PA2 of the synchronous control power amplifier unit 120 have the same hardware parameters, the same amplification factor, and the same hardware delay circuit, referring to fig. 4, to ensure that the high-frequency oscillation waveforms output after the signals are isolated and amplified by the isolation power amplifier modules PA1 and PA2 are opposite in phase and equal in amplitude.
The positive and negative electrodes of each single battery in the whole battery set are connected to two pairs of electronic or mechanical switches through shielded signal wires, and the other ends of the two pairs of switches are respectively connected to high-frequency oscillation waveform output loops of the isolation power amplifier modules PA1 and PA 2; when the battery is repaired, the processor selectively controls the closing of a pair of switches to be communicated with the high-frequency oscillation waveform output loop of the PA1 or PA2, so that the high-frequency oscillation waveform repair of the battery is realized.
The processor 110 synchronously starts PWM high-frequency oscillation waveform output and closes a switch connected to a group of two matched single batteries with similar impedance in the whole group of batteries, and further, if one of the single batteries is connected to the PA1 high-frequency oscillation waveform output circuit, the other single battery is connected to the PA2 high-frequency oscillation waveform output circuit. Because the impedances of the batteries are close, the voltage phases are opposite, the generated current directions are opposite, and the outward output ripple of the whole battery pack is close to zero.
The processor 110 repairs the batteries of N/2 pairs of the whole group of batteries in a time-sharing manner, and for the same pair of batteries, if the batteries are repaired for the first time, the battery 1 is connected to a PA1 high-frequency oscillation waveform output loop, and the battery 2 is connected to a PA2 high-frequency oscillation waveform output loop; then at the next second repair, battery 1 is connected to the PA2 hf oscillating waveform output circuit, and battery 2 is connected to the PA1 hf oscillating waveform output circuit. The battery repair is carried out periodically. The first waveform direction of the high-frequency oscillation waveform applied in the battery repairing process is ensured, not only positive direction pulse but also negative direction pulse is generated, and the balance of repairing effect is ensured.
After completing the repair for a time period (e.g., a period of 24 hours), the processor 110 restarts the battery internal resistance measurement, pairs the single batteries in the entire battery pack again according to the repaired battery internal resistance difference, and then repairs as described above to ensure that the ripple output effect is maintained at a low level after the repair for a time period.
The amplitude and frequency of the PWM waveform signals applied by the processor 110 may be dynamically adjusted according to the difference in internal resistance of each pair of batteries.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
1. the storage battery pack online repairing device for inhibiting ripples carries out impedance measurement on each battery in the whole battery pack, repairs two batteries with similar impedance as a pair, improves the repairing efficiency of the whole battery pack, and simultaneously has the ripple effect which is generated on the whole battery pack in a superposition mode and is close to zero because the amplitudes of applied high-frequency oscillation waveforms are equal and have opposite phases; the technical problem of ripple interference influence generated by online maintenance of a lead-acid storage battery is thoroughly solved by the aid of the on-line whole-group repairing ripple suppression circuit and the method for the storage battery.
2. The storage battery pack online repair device for inhibiting the ripples can properly improve the amplitude of low-frequency pulses without generating large ripple interference due to the circuit design characteristics that the amplitudes of high-frequency oscillation waveforms applied during online maintenance are equal and the phases are opposite, and the circuit design characteristics correspond to a pair of batteries with large lead sulfate crystal volume and high internal resistance, so that the technical advantage of wider maintenance range is provided for the whole group of online maintenance technology.
3. The storage battery pack online repair device for inhibiting the ripple waves solves the problem that the adopted hardware filtering method cannot adapt to and completely solve the generation of ripple waves and the ripple interference on a system and an environment due to different amplitude frequency waveform characteristics provided aiming at large crystals and small crystals because the high-frequency oscillation waveforms applied during online maintenance are equal in amplitude and opposite in phase. The waveforms applied to a pair of batteries to be repaired are synchronously applied to the batteries with the same amplitude and opposite phases no matter how the frequency and amplitude values change, and the ripple superposition effect of the whole battery pack is maintained at an extremely low level.
It will be understood by those skilled in the art that the program/software related to the processor in the above embodiments is a method commonly used in the prior art, such as a method of dividing the prior art into N/2 cell pairs according to the impedance of the N cells, generating high-frequency oscillation waveform signals with different amplitudes and frequencies, and generating and outputting the measurement switch control signal and the pulse control signal, the first selection switch control signal, and the second selection switch control signal in the processor. The utility model discloses do not relate to any software aspect's improvement. The utility model discloses only need with each device that has corresponding function pass through the utility model discloses the connection relation that gives connect can, wherein do not relate to the improvement in the aspect of any program software. The connection mode between the hardware devices with the corresponding functions is realized by the prior art by those skilled in the art, and is not described in detail herein.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. An online repairing device for a storage battery pack for inhibiting ripples is characterized by comprising:
the battery impedance measuring unit is connected with the N single batteries in the storage battery pack in a time-sharing manner;
the input end of the battery grouping unit is connected with the output end of the battery impedance measuring unit and is used for dividing the N single batteries into N/2 single battery pairs according to the impedance of the N single batteries;
a PWM generating unit, the input end of which is connected with the battery grouping unit; and
and the input end of the synchronous control power amplification unit is connected with the output end of the PWM generation unit, and the first output end and the second output end of the synchronous control power amplification unit are connected to the first single battery pair to the Nth/2 th single battery pair in a time-sharing mode in an alternating mode and used for converting the high-frequency oscillation waveform signals into two high-frequency oscillation waveforms with opposite waveform directions.
2. The ripple-reduction battery pack online restoration device according to claim 1, further comprising a control signal generation unit, wherein the cell impedance measurement unit comprises a constant current source and a switching transistor, wherein,
the anode of the constant current source is connected to the source electrode of the switching transistor, and the cathode of the constant current source is used as a second output end of the battery impedance measuring unit and used for generating current with specific amplitude and frequency; and
and the grid electrode of the switching transistor is connected with the first output end of the control signal generation unit, and the drain electrode of the switching transistor is used as the first output end of the battery impedance measurement unit, wherein the switching transistor is switched on or switched off according to the pulse control signal received by the grid electrode, so that the switching transistor generates a special frequency current.
3. The ripple-reduction online repair device for a storage battery pack according to claim 2, wherein the cell impedance measurement unit further comprises N sets of cell impedance measurement switches, each set of cell impedance measurement switches comprising a corresponding positive-side cell impedance measurement switch and a negative-side cell impedance measurement switch, wherein,
each battery cell has its positive electrode connected to the first output terminal of the battery impedance measuring unit via a positive electrode-side battery impedance measuring switch of a group of battery impedance measuring switches, and its negative electrode connected to the second output terminal of the battery impedance measuring unit via a negative electrode-side battery impedance measuring switch of the same group of battery impedance measuring switches.
4. The ripple-reduction storage battery pack online restoration device according to claim 3,
the control signal generating unit synchronously outputs a measurement switch control signal through a first output end of the control signal generating unit;
the N groups of battery impedance measuring switches are used for switching on each group of battery impedance measuring switch in the N groups of battery impedance measuring switches in a time-sharing mode based on the measuring switch control signal so as to connect the battery impedance measuring units to each single battery switched on by the battery impedance measuring switches in a time-sharing mode, wherein the N groups of battery impedance measuring switches correspond to the N single batteries one to one.
5. The ripple-suppression storage battery pack online restoration device according to claim 1, wherein the synchronous control power amplification unit comprises: the power amplifier comprises an inverter circuit, a first isolation power amplifier module, a forward following circuit and a second isolation power amplifier module, wherein,
the input end of the inverter circuit is connected with the output end of the PWM generating unit, and the output end of the inverter circuit is connected to the input end of the first isolation power amplifier module;
the first isolation power amplification module is used for isolating and amplifying the high-frequency oscillation waveform signals with opposite phases and equal amplitudes and outputting a first high-frequency oscillation waveform signal through the output end of the first isolation power amplification module;
the input end of the forward following circuit is connected with the output end of the PWM generating unit, and the output end of the forward following circuit is connected to the input end of the first isolation power amplifier module; and
and the second isolation power amplification module is used for isolating and amplifying the high-frequency oscillation waveform signals with the same phase and the same amplitude, and outputting a second high-frequency oscillation waveform signal through the output end of the second isolation power amplification module.
6. The ripple-reduction battery pack in-line restoration device according to claim 5, wherein the forward follower circuit comprises a first operational amplifier and a first resistor, wherein,
the inverting input end of the first operational amplifier is connected to the output end of the first operational amplifier; a non-inverting input terminal of the first operational amplifier is connected to an output terminal of the PWM generation unit via the first resistor.
7. The ripple-reduction battery pack in-line restoration device according to claim 5, wherein the inverting circuit includes a second operational amplifier, a second resistor, and a third resistor, wherein,
a non-inverting input terminal of the second operational amplifier is grounded, an inverting input terminal of the second operational amplifier is connected to the output terminal of the PWM generation unit via the second resistor, and an output terminal of the second operational amplifier is connected to the inverting input terminal of the second operational amplifier via a third resistor.
8. The ripple-reduction battery pack online restoration device according to claim 5, wherein the synchronous-control power amplifier unit further comprises a first N sets of switch pairs and a second N sets of switch pairs, each switch pair of the first N sets of switch pairs comprises a first positive-side switch and a first negative-side switch, and each switch pair of the second N sets of switch pairs comprises a second positive-side switch and a second negative-side switch, wherein,
each cell in the battery pack is connected to the output end of the first isolation power amplifier module via the first positive side switch and the first negative side switch of one switch pair in the first N switch pairs, and is connected to the output end of the second isolation power amplifier module via the second positive side switch and the second negative side switch of one switch pair in the second N switch pairs.
9. The online repairing device for a storage battery pack with suppressed ripples according to claim 1, wherein the battery grouping unit is configured to compare and pair impedances of N single batteries in the storage battery pack, and use two single batteries with the same or similar impedances as a single battery pair, where any one of the first single battery pair to the N/2 th single battery pair includes a first single battery and a second single battery.
10. The ripple-reduction battery pack in-line restoration device according to claim 9,
the control signal generating unit outputs a first selection switch control signal through a second output end of a single battery pair in a first repair process of the single battery pair, the first positive side switch and the first negative side switch connected with the first single battery in the first N groups of switch pairs are switched on according to the first selection switch control signal, so that the first single battery is connected to an output end of the first isolation power amplifier module through the switched-on first positive side switch and the switched-on first negative side switch, and the second positive side switch and the second negative side switch connected with the second single battery in the second N groups of switch pairs are switched on according to the first selection switch control signal, so that the second single battery is connected to an output end of the second isolation power amplifier module through the switched-on second positive side switch and the switched-on second negative side switch; and
the control signal generating unit outputs a second selection switch control signal through a second output end of the same single battery pair in a subsequent second repair process of the same single battery pair, the second positive side switch and the second negative side switch connected with the first single battery in the second N groups of switch pairs are switched on according to the second selection switch control signal, so that the first single battery is connected to an output end of the second isolation power amplifier module through the switched-on second positive side switch and the switched-on second negative side switch, and the first positive side switch and the first negative side switch connected with the second single battery in the first N groups of switch pairs are switched on according to the second selection switch control signal, so that the second single battery is connected to an output end of the first isolation power amplifier module through the switched-on first positive side switch and the switched-on first negative side switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222840983.2U CN218733340U (en) | 2022-10-27 | 2022-10-27 | Ripple-suppression storage battery pack online repairing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222840983.2U CN218733340U (en) | 2022-10-27 | 2022-10-27 | Ripple-suppression storage battery pack online repairing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218733340U true CN218733340U (en) | 2023-03-24 |
Family
ID=85593573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222840983.2U Active CN218733340U (en) | 2022-10-27 | 2022-10-27 | Ripple-suppression storage battery pack online repairing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218733340U (en) |
-
2022
- 2022-10-27 CN CN202222840983.2U patent/CN218733340U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200335992A1 (en) | Supercapacitor based energy storage device | |
| CN103560544B (en) | System for starting large-scale power load in micro grid | |
| CN103840225A (en) | Screening method for lithium ion battery | |
| CN103606715B (en) | In conjunction with the constant amplitude pulse current charges method of positive negative pulse stuffing | |
| CN103490114A (en) | Storage battery charging regenerator | |
| CN105006859A (en) | Storage battery detection apparatus and detection method thereof based on BUCK charger | |
| CN106208114A (en) | A kind of based on the many scenes application controls method on the basis of the most standing electricity of energy storage | |
| CN203747661U (en) | Pre-charge device of wind power current transformer and wind power current transformer | |
| CN218733340U (en) | Ripple-suppression storage battery pack online repairing device | |
| CN204315686U (en) | Accumulator on-line maintenance system | |
| CN115528324B (en) | Method and device for suppressing ripple waves of online repair of storage battery pack | |
| CN110138196A (en) | A kind of multiple branch circuit energy accumulation current converter direct current soft start control method and system | |
| CN105553319A (en) | Single-stage non-isolated Buck-Boost three-phase photovoltaic inverter and control method thereof | |
| CN201629386U (en) | On-line restoration device for lead-acid storage battery | |
| CN110518610B (en) | Device for controlling charging and discharging of novel energy storage battery pack | |
| CN203760586U (en) | Split type electronic desulphurizing device of lead-acid storage battery | |
| CN204927450U (en) | Public generating line charge -discharge equipment generating line control circuit of lead acid battery | |
| CN203733910U (en) | Combined lead-acid battery restorer | |
| CN204615474U (en) | A kind of cell activation management circuit being applied to batteries to store energy DC power supply | |
| CN218385370U (en) | Storage battery pack balance repairing device | |
| CN2932648Y (en) | Storage battery activating, maintenance and life-prolonging device | |
| CN117790939A (en) | Online whole-group repairing and energy guaranteeing device and method for storage battery | |
| CN201601196U (en) | Portable online passive pulse repair device for lead-acid batteries | |
| CN220190479U (en) | Solar electricity taking device | |
| TWI650569B (en) | Power management system and its operation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |