CN219420734U - Active harmonic pulse generating device and storage battery protection circuit - Google Patents
Active harmonic pulse generating device and storage battery protection circuit Download PDFInfo
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- CN219420734U CN219420734U CN202222904068.5U CN202222904068U CN219420734U CN 219420734 U CN219420734 U CN 219420734U CN 202222904068 U CN202222904068 U CN 202222904068U CN 219420734 U CN219420734 U CN 219420734U
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Abstract
The utility model discloses an active harmonic pulse generating device and a storage battery protection circuit, wherein the active harmonic pulse generating device is used for generating original ecological fundamental frequency and high-frequency harmonic waves, the active harmonic pulse generating device comprises an iron core and a winding, the iron core is an annular iron core, the annular iron core comprises cold-rolled monocrystalline oriented silicon steel sheets, and the active harmonic pulse generating device outputs and generates the original ecological fundamental frequency and the high-frequency harmonic waves under the conditions of self-excitation oscillation generated by hysteresis in the device and temperature rise caused by eddy current phenomenon, and is matched with other electronic components in the storage battery protection circuit to generate current type composite harmonic pulses, and the composite harmonic pulses are sent to a battery pack to protect the battery pack.
Description
Technical Field
The utility model relates to the field of storage battery protection, in particular to an active harmonic pulse generating device and a storage battery protection circuit.
Background
The composite harmonic resonance pulse repairing technology is a nondestructive repairing technology with the highest content and repairing and maintaining efficiency on the storage battery in the same kind of prior art at present, and is divided into a voltage type composite harmonic resonance pulse repairing technology and a current type composite (or balance) composite harmonic resonance pulse repairing technology, wherein the repairing and maintaining technology or the product on the storage battery is carried out by adopting the same kind of physical method in the prior art, most of design technologies cannot realize the composite harmonic resonance pulse repairing technology, few design technologies can generate harmonic waveforms, but not composite harmonic waveforms, not only can not realize the harmonic resonance pulse repairing technology, but also the damage to the polar plate of the storage battery is in direct proportion to the repairing efficiency, and is not an optimal technology meeting the actual requirements of users; even if the composite harmonic waveform can be designed and generated, the voltage type composite harmonic resonance pulse repair technology can be realized, and the voltage type composite harmonic resonance pulse repair technology belongs to the lossless repair technology, but has the defects compared with the current type composite (or balanced) composite harmonic resonance pulse repair technology: 1) The storage battery pack working in a serial mode is managed, so that each single battery can not obtain equal pulse energy, the storage battery pack can not be managed in a balanced manner, and the repairing and maintaining efficiency of the storage battery pack is reduced; 2) Because of the voltage type composite harmonic resonance pulse repairing technology, the output pulse voltage (or pulse single-lattice amplitude or ripple interference voltage) value is higher, generally V-level, and the ripple interference voltage (pulse single-lattice amplitude) value is less than 100mv in most storage battery application scenes of direct current power supply systems. The ripple interference voltage (pulse single-lattice amplitude) value output by the voltage type composite harmonic resonance pulse repairing technology is high, so that the voltage type composite harmonic resonance pulse repairing technology cannot be operated on line with other equipment in a direct-current power supply system at the same time in most storage battery application scenes.
Disclosure of Invention
Aiming at the technical problems, the embodiment of the utility model provides an active harmonic pulse generating device and a storage battery protection circuit which can generate composite harmonic pulses.
A first aspect of an embodiment of the present utility model provides an active harmonic pulse generating device, configured to generate an original ecological fundamental frequency and a high-frequency harmonic, where the active harmonic pulse generating device includes an iron core and a winding, the winding includes a primary winding and a secondary winding, the iron core is a ring-shaped iron core, and the ring-shaped iron core includes a cold-rolled monocrystalline oriented silicon steel sheet.
Optionally, the initial permeability of the iron core is selected to be 1.5-1.8T.
Optionally, the temperature rise range of the iron core of the active harmonic pulse generating device under full load is 45 ℃ +/-10 ℃.
Optionally, the winding is spaced from the grounded copper shield by a distance greater than 13mm.
Optionally, a temperature protection switch is arranged on the primary winding or the secondary winding, and when the temperature of the iron core reaches a preset temperature, the temperature protection switch is turned off.
Optionally, the allowable value range of the no-load voltage of the secondary winding of the active harmonic pulse generating device is 13V-16V, and the voltage regulation rate of the secondary winding under the full load condition is 6.5%.
A second aspect of an embodiment of the present utility model provides a battery protection circuit, where the battery protection circuit is connected to a battery, the battery includes a plurality of series-connected battery packs, the battery protection circuit includes an active harmonic pulse generating device according to any one of the foregoing embodiments, and is configured to generate an original ecological fundamental frequency and a high-frequency harmonic, and the battery protection circuit further includes:
the clock generation circuit is connected with the active harmonic pulse generation device and used for providing a reference frequency;
the time sequence generating circuit is respectively connected with the active harmonic pulse generating device and the clock generating circuit and is used for providing time sequence frequency;
the composite harmonic resonance module comprises a plurality of composite harmonic resonance circuits, wherein the plurality of composite harmonic resonance circuits are connected with the active harmonic pulse generating device and the time sequence generating circuit and are in one-to-one correspondence with the plurality of series-connected battery packs, and are used for generating composite harmonic pulses which are resonant with sulfuric acid crystals of the storage battery through the primary ecological fundamental frequency and the high-frequency harmonic generated by the reference frequency and the active harmonic pulse generating device based on the time sequence frequency, and transmitting the composite harmonic pulses to the plurality of series-connected battery packs to protect the battery packs.
Optionally, the device further comprises a power supply protection circuit which is respectively connected with an external power supply and the active harmonic pulse generating device and used for providing alternating current for the active harmonic pulse generating device.
Optionally, the power supply protection circuit includes a voltage comparison module, where the voltage comparison module is configured to provide an external ac power supply to the active harmonic pulse generating device with ac power, and the voltage comparison module is configured to compare whether the ac voltage exceeds a preset value, and if the ac voltage exceeds the preset value, control the power supply protection circuit to stop supplying power to the active harmonic pulse generating device.
Optionally, the compound harmonic resonance circuit includes high frequency rectifier bridge, high frequency low resistance electric capacity, photoelectric coupler and MOS pipe, the high frequency rectifier bridge input is connected active harmonic pulse generator, the output is connected high frequency low resistance electric capacity and OUT1 end, photoelectric coupler's first end respectively with clock generation circuit and time sequence generation circuit are connected, the second end passes through resistance R21 ground connection, the third end respectively with resistance R23's one end and resistance R24's one end, resistance R23's the other end with the grid of MOS pipe is connected, resistance R24's the other end with the source ground of MOS pipe, the drain electrode of MOS pipe with the negative pole of group of battery is connected, photoelectric coupler's fourth end is connected with the one end of fuse (F4), the other end of fuse (F4) is connected with resistance R25's one end and current limiting resistor R22 respectively, the other end of resistance R25 is connected with the negative pole of emitting diode (D11), the positive pole of emitting diode (D11) and current limiting resistor R22 all are connected with the other end of group of battery.
In the technical scheme provided by the embodiment of the utility model, the storage battery protection circuit provides original ecological fundamental frequency and high-frequency harmonic wave through the active harmonic wave pulse generating device, and compared with the prior art, the storage battery protection circuit has high technical performance, can generate composite harmonic wave, not only realizes high-efficiency restoration of the storage battery by using a current type (balanced) composite harmonic wave resonance pulse technology, prolongs the service life of the storage battery, but also can effectively improve the safety and reliability of equipment operation, reduce the failure rate and prolong the service life.
Drawings
FIG. 1 is a circuit diagram of a prior art voltage type composite harmonic resonance pulse repair technique;
FIG. 2 is a schematic diagram of an active harmonic pulse generator according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of an active harmonic pulse generator according to another embodiment of the present utility model;
FIG. 4 is a schematic circuit diagram of one embodiment of a battery protection circuit according to the present utility model;
FIG. 5 is a schematic circuit diagram of another embodiment of the battery protection circuit of the present utility model;
FIG. 6 is a resonance diagram of the current type composite harmonic pulse and the sulfuric acid crystal of the storage battery in the utility model;
FIG. 7 is a schematic diagram of a portion of a current mode composite harmonic resonance circuit according to the present utility model;
FIG. 8 is a schematic diagram of another portion of the current mode composite harmonic resonance circuit according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
In the existing technology for repairing and maintaining the storage battery by adopting a physical method, a voltage type composite harmonic resonance pulse repairing technology is basically adopted, and the generated composite harmonic waveform is realized by using design circuits such as an inductor, a capacitor, a diode and the like. Referring to fig. 1, the working principle of voltage type composite harmonic resonance is shown, harmonic oscillation generated by high-voltage discharge is instantaneously generated by on-off control of the IRF9Z34 on-off control of the L1 and the L2, because the inductance stored electricity is smaller, the pulse current energy supplied to the storage battery is small, the output pulse energy is usually improved by improving the pulse voltage amplitude, and the conversion is that the current intensity formula is as follows: i=u/R. The voltage type composite harmonic resonance pulse repairing technology has relatively low repairing and maintaining efficiency on the storage battery pack, and can not realize on-line operation with other equipment in a direct-current power supply system at the same time in most storage battery application scenes, so that the final requirement of a user can not be met.
The utility model provides an active harmonic pulse generating device, which is used for providing original ecological fundamental frequency and high-frequency harmonic for generating a composite harmonic waveform and realizing a current type (or 'balanced') composite harmonic resonance pulse repairing technology in a technology of repairing and maintaining a storage battery by adopting a physical method. The source pulse generating device comprises an iron core and a winding, wherein the winding comprises a primary winding and a secondary winding, the magnet is a ring magnet, and the iron core comprises a cold-rolled monocrystalline oriented silicon steel sheet. The utility model adopts the annular magnet, has strong output characteristic and anti-interference capability, the iron core has no air gap, the winding is uniformly wound on the annular iron core, the magnetic leakage and electromagnetic radiation are reduced, the utility model can be applied to high-sensitivity equipment without additional shielding, and the cost is reduced.
The utility model is used for providing original ecological fundamental frequency and high-frequency harmonic wave for the technology of repairing and maintaining the storage battery by adopting a physical method and realizing the current type (or called equalization) composite harmonic resonance pulse repairing technology, and the principle is as follows: when the device provided by the utility model works, the hysteresis phenomenon in the device is reasonably controlled to generate self-excitation oscillation, and under the temperature rise condition caused by the eddy phenomenon, the original ecological fundamental frequency and high-frequency harmonic wave are output and generated, and the device is matched with related electronic equipment circuits to generate a composite harmonic wave form and realize the current type (or 'balanced') composite harmonic resonance pulse repairing technology.
In one embodiment of the present utility model, the thickness of the cold rolled single crystal grain oriented silicon steel sheet of the present utility model is generally 0.35mm or less, and the cold rolled single crystal grain oriented silicon steel sheet is forward and is formed by rolling the whole sheet without any break and seamlessly.
In one embodiment of the present utility model, the initial permeability of the core is selected to be in a range of 1.5 to 1.8T, so that the electrical efficiency is up to 95% or more. The active harmonic pulse generator comprises a primary winding and a secondary winding, wherein at least 4 layers of the primary winding and the secondary winding are wrapped by a B-stage insulating polyester film, the breakdown voltage is more than 4000V, and a primary lead is made of double-insulation wires.
In one embodiment of the utility model, the primary winding and the secondary winding are both provided with thermal protection, and the primary winding or the secondary winding is spaced from the grounded copper shield by a distance of greater than 13mm. And a temperature protection switch is arranged on the primary winding or the secondary winding, when the temperature of the iron core reaches 60 ℃, the temperature protection switch is disconnected, and when the temperature is recovered to be normal, the switch is automatically reset and closed.
The temperature rise of the active harmonic pulse generating device is mainly determined by two parts of iron loss and copper loss, the temperature rise is also greatly related to the heat radiating area, and if the heat radiating area and the heat radiating condition are both good, the lower temperature rise can be obtained.
The maximum temperature rise of the active harmonic pulse generating device is lower than 45 ℃ or even smaller when the active harmonic pulse generating device is fully loaded under the conditions that the iron core is not subjected to fire (annealing) process treatment and the power consumption between the primary winding and the secondary winding is balanced, which does not meet the requirement of the active harmonic pulse generating device on the temperature change range.
The utility model relates to an active harmonic pulse generating device, which utilizes the hysteresis phenomenon of an iron core conductor to generate self-excitation oscillation under the conditions of carrying out fire (annealing) process treatment on an iron core and balancing power consumption between a primary winding and a secondary winding, and simultaneously controls the heat (temperature rise) range generated by the eddy current action formed by the device at a reasonable level, thereby ensuring the induction current intensity of the fundamental frequency and the high frequency harmonic, namely, the temperature range required to be generated by the eddy current is controlled to be more than 45+/-10 ℃ (the working time of the device is continuous for 4 hours).
The utility model rearranges the molecular structure of the silicon steel sheet by carrying out proper fire (annealing) process treatment on the iron core of the active harmonic pulse generator, and changes the resistivity of the conductor, thereby controlling the resistivity and heat of the conductor to be in the same reasonable temperature rise range of 45+/-10 ℃. Under the conditions that the outer circumference of the iron core conductor is fixed and the power consumption of the primary winding and the secondary winding is basically balanced, the resistivity of the conductor is small, the generated vortex is strong, and the generated heat is large, so that the resistivity of the conductor is controlled and is closely related to the ignition (annealing) process.
Referring to fig. 2 and 3, the allowable range of the idle voltage of the secondary winding of the active harmonic pulse generator is 13V-16V, and the voltage regulation rate of the secondary winding under the full load condition is 6.5%. For example, when the active harmonic pulse generating device is connected to 110/220V mains supply, the voltage value (U1-U8/U9) of each winding is=15.2v in no-load, and when rated current i=5a is passed, the voltage value (U1-U8/U9) of each winding is 14.2V (=15.2v×Δu) according to the voltage adjustment rate requirement; the active harmonic pulse generating device is connected with 110/220V mains supply, and when no-load, the voltage value of each winding meets the required value, and the allowable error range is generally: the voltage value of the high-voltage primary winding is less than or equal to +/-8 percent, and the voltage value (U1-U8/U9) of the low-voltage secondary winding is less than or equal to +/-5 percent.
The utility model also provides a storage battery protection circuit, as shown in fig. 4 and 5, wherein the storage battery protection circuit is connected with a storage battery, the storage battery comprises a plurality of battery packs connected in series, the storage battery protection circuit comprises the active harmonic pulse generating device according to any embodiment, and is used for generating original ecological fundamental frequency and high-frequency harmonic, and the storage battery protection circuit also comprises a clock generating circuit, a time sequence generating circuit and a composite harmonic resonance module, wherein the clock generating circuit is respectively connected with the active harmonic pulse generating device and the time sequence generating circuit and is used for providing reference frequency; the time sequence generation circuit is connected with the active harmonic pulse generation device and is used for providing time sequence frequency; the composite harmonic resonance module comprises a plurality of composite harmonic resonance circuits, wherein the composite harmonic resonance circuits are connected with the active harmonic pulse generating device and the time sequence generating circuit, are in one-to-one correspondence with a plurality of battery packs connected in series, and are used for superposing the reference frequency with original ecological fundamental frequency and high-frequency harmonic generated by the active harmonic pulse generating device on the basis of the time sequence frequency, generating composite harmonic pulses which can only generate resonance with sulfuric acid crystals of the storage battery through voltage waveforms generated by the high-frequency rectifying circuit in the composite harmonic resonance circuits, transmitting the composite harmonic pulses to the battery packs, and protecting (repairing and maintaining) the battery packs.
The composite harmonic oscillation pulse repairing technology is based on the principle that the pulse with specific frequency has damage to lead sulfate crystal produced by accumulator, and the composite harmonic pulse energy is used to impact coarse lead sulfate crystal grain to interfere its existence and growth and change the sulfate of accumulator into reversible. When the storage battery protection circuit works, pulse current with specific frequency and specific amplitude can be continuously output, and only the pulse frequency of the pulse current and the natural frequency of the lead sulfate crystals are in resonance relative to the lead sulfate crystals with different sizes in the storage battery, when the energy is enough, the lead sulfate crystals are crushed and decomposed and dissolved in sulfuric acid electrolyte to participate in chemical reaction again, so that the purpose of eliminating sulfation of the storage battery is achieved, and the capacity of the battery is recovered.
The storage battery protection circuit also comprises a power supply protection circuit which is respectively connected with an external power supply and the active harmonic pulse generating device and is used for providing alternating current for the active harmonic pulse generating device and providing over-limit abnormal protection for the primary voltage of the active pulse.
In one embodiment of the present utility model, the power supply protection circuit includes a voltage comparison module, where the voltage comparison module is configured to provide an external ac power supply to the active harmonic pulse generator with ac power, and the voltage comparison module is configured to compare whether the ac voltage exceeds a preset value, and if the ac voltage exceeds the preset value (110V/220 v±15%), control the power supply protection circuit to stop supplying power to the active harmonic pulse generator.
The clock generating circuit is used for generating reference frequency which is 83.3Khz, the frequency is divided by 10 times through the time sequence generating circuit, the frequency after the frequency division is 8.33kHz, the frequency is the optimal resonance point of sulfuric acid crystals of the storage battery, and referring to FIG. 6, the frequency of the composite harmonic pulse overlapped with the frequency is closer to 8.33kHz, the resonance between the composite harmonic pulse and the sulfuric acid crystals of the storage battery is the highest, and the sulfuric acid crystals are broken up the highest. Referring to fig. 6, β1, β2 and β3 represent frequency curves of three lead sulfate crystals with different volumes, when the arrival time sequence generating circuit has a composite harmonic pulse with a superimposed frequency of 8.33kHz, the efficiency of breaking up the lead sulfate crystals is highest after resonance is formed with the optimal frequency resonance point of 8.33kHz of the lead sulfate crystals, and if the composite harmonic frequency deviates from about 8.33kHz, the efficiency of breaking up the lead sulfate crystals is weakened.
In one embodiment of the present utility model, as shown in fig. 7 and 8, the multiple composite harmonic resonance circuits respectively include a high-frequency rectifier bridge D, a high-frequency low-resistance capacitor C, a photoelectric coupler and a MOS tube, wherein an input end of the high-frequency rectifier bridge D is connected to the active harmonic pulse generating device, an output end of the high-frequency low-resistance capacitor C and an OUT1 end of the high-frequency rectifier bridge D are connected to the clock generating circuit and the time-sequence generating circuit, a first end of the photoelectric coupler is connected to one end of a resistor R23 and one end of a resistor R24 respectively through a resistor R21 grounded, a second end of the resistor R23 is connected to one end of the resistor R24 respectively, the other end of the resistor R24 and a source electrode of the MOS tube are grounded, a drain electrode of the MOS tube is connected to a cathode of the battery pack, a fourth end of the photoelectric coupler is connected to one end of a fuse F4, the other end of the fuse F4 is connected to one end of a resistor R25 and one end of a current limiting resistor R22 respectively, the other end of the resistor R25 is connected to a cathode of the light emitting diode D11 and the anode of the battery pack 11 are connected to both the anode of the resistor D11 and the cathode of the battery pack.
The composite harmonic resonance module of the utility model comprises a plurality of composite harmonic resonance circuits, as shown IN fig. 4, 7 and 8, taking the composite harmonic resonance circuit of 8 channels as an example, the reference frequency generated by the clock generation circuit is 83.3Khz, the frequency is 8.33Khz after 10 frequency division by the time sequence generation circuit, the frequency passes through the time sequence generation circuit and is controlled by the time sequence cross switching control module to sequentially transmit 8.33Khz frequency to IN IN the composite harmonic resonance circuit of 1 to 8 channels, the IN acts on the photoelectric coupler U11 respectively, and the on-off state of the MOS tube U12 is controlled by 8.33Khz frequency. The positive electrode of the MOS tube U12 is connected with the OUT end through a battery pack, a current limiting resistor R22 and an overcurrent fuse F4, the negative electrode of the MOS tube is connected with GND, and the high-capacity capacitor C is circularly charged and discharged by controlling the on or off of the MOS tube U12 and using the 8.33kHz frequency provided by a time sequence generating circuit.
Referring to fig. 7, a large capacity capacitor C is a passive device for storing energy in the form of an electric field, and the voltage across the capacitor needs time to be established, the higher the signal frequency, the smaller the capacitance reactance of the capacitor, the lower the signal frequency, the larger the capacitance reactance of the capacitor, and the larger the voltage across the capacitor. According to the charge fast storage, the charge and discharge characteristic of instant discharge, the ' low-resistance frequency, the ' high-pass frequency characteristic ', and the fundamental frequency and high-frequency harmonic wave generated by the transformer, the voltage waveform in the power supply circuit comprises the superposition of the fundamental frequency direct current and the high-frequency harmonic wave, and the energy stored by the capacitor C is released and output to the OUT-GND battery load loop circuit through the switch circuit formed by the photoelectric coupler U11 and the MOS tube U12, so that the composite harmonic pulse waveform is finally formed. In summary, the composite harmonic pulse current energy is applied to both ends of the battery load circuit of OUT-GND due to the action of the back electromotive force.
Referring to fig. 7, due to the presence of nonlinear electric devices in the circuit, for example: the dc rectifying device D, the impact load (generated by the capacitor C), the inductance (active harmonic pulse generator or transformer) on the line, etc. cause a current waveform of other frequencies than the 50Hz fundamental frequency, called harmonics, caused by current phase lag. Due to its own operating characteristics, the devices draw currents that are non-sinusoidal, i.e. harmonic currents are present, even when they are supplied with an ideal sinusoidal voltage. In summary, harmonic currents are generated in the supply circuit and are applied to the battery load circuit by OUT-GND in FIGS. 7 and 8.
The current type composite harmonic oscillation pulse repairing technology formed in the mode and the lead sulfate crystal form resonance, so that the lead sulfate crystal is broken.
The utility model relates to a working principle of a time sequence cross switching control module: in a 10-channel output design of the timing generation circuit, the adjacent channel output timing interval is 12us, so that the timing interval of 10 channels is 120us in total, and the time of applying the 8.33kHz frequency of each channel to the circuit load is 120us. 2 redundant channels need to be reserved in the 10-channel output, so 8 channels are allowed to work at maximum. Firstly, according to the working output priority working principle of singular channels, when the 1 st channel starts to work and outputs 8.33kHz frequency, and then when the time sequence interval at the next moment is 24us, selecting the 3 rd channel to start to work and output 8.33kHz frequency and so on, and selecting the next channel to start to work and output every interval of 24us until the 7 th channel is selected to start to work and output; next, starting the work of the double-channel work output, selecting the 2 nd channel to start the work output, and then selecting the 4 th channel to start the work output when the time sequence interval is 24us at the next moment; similarly, every 24us of interval, selecting the next channel to start working output until the 8 th channel is selected to start working output; and repeating the steps.
For a storage battery which is used for on-line management of a plurality of series-connected battery packs, a plurality of composite harmonic resonance circuits are managed by adopting the time sequence cross switching operation mode, and each composite harmonic resonance circuit manages a nominal rated voltage 12V (12V 1 or 2V 6) battery in the plurality of series-connected battery packs, and so on.
Referring to fig. 4, taking an application of the active harmonic pulse generator and the 8-channel composite harmonic resonance circuit as an example, the clock generator generates a reference frequency, and the channel sequence is controlled by the above-mentioned operation mode of time sequence cross switching, so that the reference frequency is sequentially transmitted to a switching circuit composed of a photocoupler U11 and a MOS tube U12 in the 8-channel composite harmonic resonance circuit. The on and off of the 8-channel composite harmonic resonance circuits are controlled by the switch circuits respectively, so that current type (or balance) composite harmonic pulses generated by only one composite harmonic resonance circuit at a certain moment are ensured to be filled in a managed nominal rated voltage 12V (12V 1 or 2V 6) battery pack, namely, only 1 composite harmonic resonance circuit in the 8-channel composite harmonic resonance circuits is operated and output at each moment, and the like.
In the above embodiment, the 8-channel composite harmonic resonance circuit is equivalent to that only 1 composite harmonic resonance circuit consumes energy in operation output when managing a plurality of battery packs operating in series. When the composite harmonic resonance circuit for 8 channels is used for managing a plurality of battery packs working in series, the corresponding active harmonic pulse generating device of original ecological fundamental frequency and high-frequency harmonic is provided, which is also equivalent to the secondary winding U1-U8 in fig. 2, only 1 of the corresponding secondary windings U is working in output power, and thus the output power of the active harmonic pulse generating device is reduced.
In the above embodiment, for the on-line management of a plurality of battery packs that operate in series, the composite harmonic resonance circuit of 8 channels adopts a plurality of identical operating circuit designs, and the operation mode of time sequence cross switching is introduced, and meanwhile, the effect of reducing the pulse ripple interference value (pulse single-cell amplitude value) of the operation output of the composite harmonic resonance circuit is also brought. Taking a management rated total voltage 90V (2V 48) battery pack as an example, if a circuit is adopted to manage the 2V 48 (96V) battery pack with the nominal capacity of 100-1000 AH, under the condition that the internal resistance of the 2V battery is extreme in 2mΩ and the device outputs pulse current 5A, the actual pulse cell amplitude is V=RI= (2 mΩ 48) 5A=480 mv, which is far higher than the requirement of communication standard MAX less than or equal to 100 mv; if the working mode of time sequence cross switching is introduced, when the device manages a 2V 48 (96V) battery pack, only one compound harmonic resonance circuit is working output at a certain moment, and the voltage and the number of batteries managed by one circuit are 2V 6, at the moment, the internal resistance of the 2V battery is in an extreme state 2mΩ, and the actual pulse unit amplitude is V=RxI= (2 mΩ 6) 5 A=60 mv under the condition that the device outputs pulse current 5A, so as to meet the requirement of communication standard MAX being less than or equal to 100mv.
The active harmonic pulse generating device in fig. 2 is applied to the circuit in fig. 4, because the time sequence generating circuit adopts 10 channels of working output, 8 secondary windings of the active harmonic pulse generating device use 8 channels (2 redundant channels are reserved) in the time sequence generating circuit, the time sequence of the 8 channels acts on the storage battery and fully participates in the limit value of chemical reaction time with the storage battery, so if 9 secondary windings of the active harmonic pulse generating device in fig. 3 are used, 9 channels (1 redundant channel is reserved) in the time sequence generating circuit act on the storage battery, the time reserved for the storage battery to participate in the chemical reaction is insufficient, and the efficiency of eliminating the sulfation crystals is seriously influenced.
The active harmonic pulse generating device in fig. 3 is applied to the circuit in fig. 5, and at this time, 2 time sequence cross switching circuits are shown in fig. 3. The working period of the 2 multiplied by 10 channels is equivalent to that of the 9 secondary windings of the active harmonic pulse generating device, 8 channels (reserved 12 redundant channels) are used, and when the active harmonic pulse generating device acts on a storage battery, the time for the storage battery to participate in chemical reaction is sufficient, so that the efficiency of eliminating sulfation crystals is not influenced. However, in fig. 3, the maximum output power load of each of the 9 secondary windings of the active harmonic pulse generator cannot exceed 50% of the power capacity of the iron core. Therefore, the volume and weight of the active harmonic pulse generator are greatly reduced when the time sequence switching operation is used than when the active harmonic pulse generator continuously works, and the power capacity is the main basis for determining the size (volume and weight) of the iron core.
The rated power calculation of the active harmonic pulse generating device comprises the following steps of: pn=pl (VA)
Wherein the PN-active harmonic pulse generator has a power rating (VA); pl—load power (VA) of the active harmonic pulse generator;
for example, in the active harmonic pulse generating device shown in fig. 2-5, an iron core with 100W power capacity is selected, when the primary winding is AC110/220V, the voltage value range of the secondary winding U0 is 5V-12V, and the full load current is 0.5A (redundancy 1A); the voltage value range of the secondary winding U1-U8/U9 is 13V-16V (default 14V), and the full load current is 5A (redundancy 6A); the voltage value ranges of U0, U1-U8/U9 in the active harmonic pulse generating device are all voltage values under the condition of full load current; the magnitude of the load current of each secondary winding of the active harmonic pulse generating device is in direct proportion to the magnitude of the selected power capacity, the voltage value range of the secondary winding is unchanged, namely, the larger the load current of each secondary winding of the active harmonic pulse generating device is, the larger the power capacity selected by the active harmonic pulse generating device is, and the voltage value range of the secondary winding U1-U8/U9 is required to be fixed at 13V-16V.
According to the serial working characteristics of the battery pack, the utility model can lead each single battery in series connection in the battery pack to obtain equal and enough harmonic resonance energy by introducing the pulsating current concept technology and matching with the high-efficiency compound harmonic resonance technology, thereby leading the repair maintenance rate of each single battery and the balanced characteristic improvement rate of the battery pack to be up to 95% at the maximum practically on the premise of not damaging the battery polar plate, and leading the practical service life of the storage battery to be maximally close to the design life thereof. The utility model has high repairing and maintaining efficiency for the storage battery pack working in a serial mode, and the output ripple interference voltage (pulse single-cell amplitude) value is less than 100mv by matching with the storage battery protection circuit related by the utility model, so that the utility model can simultaneously operate on line with other equipment in a direct current power supply system in all storage battery application scenes.
The active harmonic pulse generating device is matched with the composite harmonic resonance circuit, so that low power consumption and low ripple voltage interference output are realized. The current type composite harmonic oscillation pulse repairing technology firstly uses the principle of resonance generated by lead sulfate crystals, ensures that the power consumption is far lower than that of the existing similar technical products adopting the physical method technology, and also reduces the requirements of the device for power and volume. Because the battery pack is provided with a plurality of single batteries connected in series, the optimal repair efficiency of the balanced resonance pulse repair technology is ensured, the output ripple voltage interference is reduced, and the overall output power consumption of the device is reduced.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The active harmonic pulse generating device is used for generating original ecological fundamental frequency and high-frequency harmonic waves and is characterized by comprising an iron core and a winding, wherein the winding comprises a primary winding and a secondary winding, the iron core is an annular iron core, and the annular iron core comprises cold-rolled monocrystalline oriented silicon steel sheets.
2. The active harmonic pulse generator of claim 1, wherein the core has an initial permeability selected in the range of 1.5 to 1.8T.
3. The active harmonic pulse generator of claim 1, wherein the temperature rise of the core of the active harmonic pulse generator under full load is in the range of 45 ℃ ± 10 ℃.
4. The active harmonic pulse generating device of claim 1, wherein the winding is spaced from the grounded copper shield by a distance greater than 13mm.
5. The active harmonic pulse generator according to claim 1, wherein a temperature protection switch is provided on the primary winding or the secondary winding, and the temperature protection switch is turned off when the temperature of the core reaches a preset temperature.
6. An active harmonic pulse generator as claimed in claim 1, wherein the secondary winding no-load voltage of the active harmonic pulse generator is in the range of 13V-16V, and the secondary winding voltage regulation under full load condition is 6.5%.
7. A battery protection circuit, wherein the battery protection circuit is connected with a battery, the battery comprises a plurality of battery packs connected in series, the battery protection circuit comprises the active harmonic pulse generating device according to any one of claims 1-6, and is used for generating original ecological fundamental frequency and high-frequency harmonic waves, and the battery protection circuit further comprises:
the clock generation circuit is connected with the active harmonic pulse generation device and used for providing a reference frequency;
the time sequence generating circuit is respectively connected with the active harmonic pulse generating device and the clock generating circuit and is used for providing time sequence frequency;
the composite harmonic resonance module comprises a plurality of composite harmonic resonance circuits, wherein the plurality of composite harmonic resonance circuits are connected with the active harmonic pulse generating device and the time sequence generating circuit and are in one-to-one correspondence with the plurality of series-connected battery packs, and are used for generating composite harmonic pulses which are resonant with sulfuric acid crystals of the storage battery through the primary ecological fundamental frequency and the high-frequency harmonic generated by the reference frequency and the active harmonic pulse generating device based on the time sequence frequency, and transmitting the composite harmonic pulses to the plurality of series-connected battery packs to protect the battery packs.
8. The battery protection circuit of claim 7, further comprising,
and the power supply protection circuit is respectively connected with an external power supply and the active harmonic pulse generating device and is used for providing alternating current for the active harmonic pulse generating device.
9. The battery protection circuit of claim 8, wherein the power supply protection circuit comprises a voltage comparison module for providing ac power from an external ac power source to the active harmonic pulse generation device, the voltage comparison module for comparing whether the ac voltage exceeds a preset value, and if so, controlling the power supply protection circuit to stop supplying power to the active harmonic pulse generation device.
10. The battery protection circuit according to claim 7, wherein the composite harmonic resonance circuit comprises a high-frequency rectifier bridge, a high-frequency low-resistance capacitor, a photoelectric coupler and a MOS tube, wherein an input end of the high-frequency rectifier bridge is connected with the active harmonic pulse generating device, an output end of the high-frequency rectifier bridge is connected with the high-frequency low-resistance capacitor and an OUT1 end, a first end of the photoelectric coupler is respectively connected with the clock generating circuit and the time sequence generating circuit, a second end of the photoelectric coupler is grounded through a resistor R21, a third end of the photoelectric coupler is respectively connected with one end of a resistor R23 and one end of a resistor R24, the other end of the resistor R23 is connected with a gate electrode of the MOS tube, the other end of the resistor R24 and a source electrode of the MOS tube are grounded, a drain electrode of the MOS tube is connected with a cathode of the battery pack, a fourth end of the photoelectric coupler is connected with one end of a fuse (F4), the other end of the fuse (F4) is respectively connected with one end of a resistor R25 and one end of a current limiting resistor (R22), the other end of the resistor R25 is connected with a cathode of a light emitting diode (D11), and the anode of the light emitting diode (D11) is connected with the anode of the battery pack.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222904068.5U CN219420734U (en) | 2022-11-02 | 2022-11-02 | Active harmonic pulse generating device and storage battery protection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222904068.5U CN219420734U (en) | 2022-11-02 | 2022-11-02 | Active harmonic pulse generating device and storage battery protection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN219420734U true CN219420734U (en) | 2023-07-25 |
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| CN202222904068.5U Active CN219420734U (en) | 2022-11-02 | 2022-11-02 | Active harmonic pulse generating device and storage battery protection circuit |
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| CN (1) | CN219420734U (en) |
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