CN210629144U - Storage battery pack discharging device - Google Patents
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- CN210629144U CN210629144U CN201921758685.0U CN201921758685U CN210629144U CN 210629144 U CN210629144 U CN 210629144U CN 201921758685 U CN201921758685 U CN 201921758685U CN 210629144 U CN210629144 U CN 210629144U
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Abstract
The utility model relates to a storage battery discharging equipment belongs to storage battery technical field. The device comprises a storage battery pack formed by connecting a plurality of storage battery monomers in series, and further comprises a push-pull boosting module and an inversion grid-connected module; the push-pull boosting module is connected with the storage battery pack and used for boosting the direct current output by the storage battery pack; the inversion grid-connected module is connected with the push-pull boosting module, and converts the boosted direct current into alternating current and transmits the alternating current to a power grid. The utility model discloses the device not only can solve the problem that the mode that adopts to generate heat discharges and exists among the prior art, its stable performance, long service life moreover, and the practicality is strong, easily popularizes and applies.
Description
Technical Field
The utility model belongs to the technical field of storage battery, concretely relates to storage battery discharging device.
Background
The storage battery is used as a backup energy source and is widely applied to various occasions of communication and data processing. Under the condition that external power supply is interrupted, the storage battery is required to provide power guarantee for equipment, and in case of failure of the storage battery, huge loss and even disasters are brought to the communication and data industries, so that the safety of the storage battery is self-evident. In order to ensure the performance of the storage battery, the storage battery pack needs to be periodically discharged, the discharge process can check the capacity of the storage battery pack and find poor storage battery monomers, and then the periodic discharge can activate the performance of the storage battery pack and prolong the service life of the storage battery pack.
However, the conventional battery pack discharging device discharges the battery pack in a heating manner, and a large amount of heat is released in the discharging process, and if the heat is not properly treated, the working environment of the battery pack is deteriorated and the safety of other equipment is endangered.
Secondly, the storage battery pack discharges, and due to the fact that a large amount of heat is generated, the discharge process needs to be attended by people from the requirement of safety regulations. The conventional method adopts a 10-hour rate to discharge the storage battery pack, which means that the discharge process is observed in real time within 10 hours, and great labor intensity is brought.
Moreover, the battery pack discharges, which directly becomes heat dissipation, resulting in a large amount of power loss. In order to discharge this heat, even auxiliary means such as air conditioning, blowing, etc. are required, which in itself wastes a large amount of electricity.
Therefore, how to overcome the defects of the prior art is a problem which needs to be solved urgently in the technical field of the current storage battery pack.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists, the utility model provides a storage battery discharge device, storage battery discharge device not only can solve the problem that the mode that adopts to generate heat discharges and exists among the prior art, its stable performance, long service life moreover.
In order to achieve the above object, the utility model adopts the following technical scheme:
a storage battery pack discharging device comprises a storage battery pack formed by connecting a plurality of storage battery monomers in series, and further comprises a push-pull boosting module and an inversion grid-connected module;
the push-pull boosting module is connected with the storage battery pack and used for boosting the direct current output by the storage battery pack; the inversion grid-connected module is connected with the push-pull boosting module, and converts the boosted direct current into alternating current and transmits the alternating current to a power grid;
the push-pull boosting module comprises a transformer, a first MOS tube Q1, a second MOS tube Q2, a diode D1, an electrolytic capacitor C1 and an electrolytic capacitor C2; the primary coil of the transformer comprises a first outgoing line, a second outgoing line and a center tap;
the first outgoing line is connected with the drain electrode of the first MOS transistor Q1; the second outgoing line is connected with the drain electrode of the second MOS transistor Q2;
the anode of the diode D1 is connected with the source of the first MOS tube Q1 and the source of the second MOS tube Q2, and the cathode of the diode D1 is connected with the center tap;
the diode D1, the electrolytic capacitor C1 and the electrolytic capacitor C2 are connected in parallel;
the anode of the electrolytic capacitor C1 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C1 is connected with the anode of the diode D1; the anode of the electrolytic capacitor C2 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C2 is connected with the anode of the diode D1;
the diode D1 is used for absorbing the inverse peak signal generated when the first MOS transistor Q1 and the second MOS transistor Q2 are switched.
Further, preferably, the inversion grid-connected module includes a high-speed optocoupler, a PNP triode and an MOS transistor, and the PNP triode is connected between the high-speed optocoupler and the MOS transistor; and when the PNP triode is used for increasing the drive current of the MOS tube, the PNP triode is conducted.
Further, preferably, the system also comprises a storage battery single body monitoring module, a storage battery total voltage and current monitoring module and a data processing module;
each storage battery monomer is connected with a storage battery monomer monitoring module; the storage battery monomer monitoring module is used for acquiring voltage data and temperature data of the storage battery monomer connected with the storage battery monomer monitoring module and transmitting the acquired data to the data processing module;
the storage battery pack total voltage and current monitoring module is connected with two ends of the storage battery pack and used for acquiring total voltage data and current data of the storage battery pack and transmitting the acquired data to the data processing module;
and the data processing module is respectively connected with the storage battery monomer monitoring module and the storage battery pack total voltage and current monitoring module.
Further, it is preferable that the battery cell monitoring module includes a self-powered power supply circuit, a test circuit, and a data transmission circuit.
Further, preferably, the single battery cell monitoring module is directly connected with positive and negative terminals of the single battery cell.
Further, preferably, the alternating current is a single-phase or three-phase alternating current.
Further, preferably, a current sensor is arranged in the storage battery pack total voltage and current monitoring module, the current sensor is connected in series with the storage battery pack, and current data is acquired through the current sensor.
Compared with the prior art, the utility model, its beneficial effect does:
(1) the utility model provides a can reduce labour, stable performance, long service life and can absorptive anti-peak signal's storage battery discharge device, the device novel structure, the practicality is strong, easily popularizes and applies.
(2) The utility model discloses the contravariant is incorporated into the power networks module is the direct current contravariant after stepping up becomes the alternating current that can be incorporated into the power networks and carries the electric wire netting to accomplish storage battery discharge process, the heat that this process storage battery produced is very few, avoids prior art, and storage battery discharges and releases a large amount of thermal situations, so storage battery discharge process can need not the people on duty, thereby effectual reduction labour.
(3) The utility model discloses be equipped with first MOS pipe Q1 and second MOS pipe Q2 in the push-pull boost module, when first MOS pipe Q1 and second MOS pipe Q2 are controlled by external signal and switch on simultaneously, get into the electric current accessible of push-pull boost module shunts through first MOS pipe Q1 and second MOS pipe Q2 to guarantee that first MOS pipe Q1 and second MOS pipe Q2 can not lead to damaging because the electric current of process is too big, so, be favorable to improving storage battery pack discharge device's life and stability. In addition, because the diode D1 is arranged in the storage battery push-pull boosting circuit, the diode D1 can absorb the inverse peak signals generated when the first MOS transistor Q1 and the second MOS transistor Q2 are switched, thereby being beneficial to further improving the stability of the storage battery discharging device.
(4) The data processing module converts and outputs the voltage data and the temperature data of the storage battery monomer and the total voltage data and the current data of the storage battery pack, so that the storage battery monomer or the storage battery pack is monitored, whether the storage battery monomer or the storage battery pack has a problem or not can be found through monitoring, and the stable performance of the storage battery pack is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a battery pack discharging device according to an embodiment of the present invention;
fig. 2 is a circuit diagram of the push-pull boost module of the present invention;
fig. 3 is a circuit diagram of the inversion grid-connected module of the present invention;
fig. 4 is a circuit diagram of the battery pack discharging device of the present invention;
fig. 5 is a PWM driving circuit of the inversion grid-connected module of the present invention;
fig. 6 is a connection diagram of the PWM driving circuit and a fourth MOS transistor Q4;
fig. 7 is a schematic structural diagram of a battery pack discharging device according to another embodiment of the present invention;
fig. 8 is a core circuit diagram of the single battery monitoring module of the present invention;
fig. 9 is a core circuit diagram of the storage battery pack total voltage and current monitoring module of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The specific techniques, connections, conditions, or the like, which are not specified in the examples, are performed according to the techniques, connections, conditions, or the like described in the literature in the art or according to the product specification. The materials, instruments or equipment are not indicated by manufacturers, and all the materials, instruments or equipment are conventional products which can be obtained by purchasing.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "provided" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention is understood according to the specific situation.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Example 1
As shown in fig. 1 and 2, a storage battery pack discharging apparatus includes a storage battery pack 2 formed by connecting a plurality of storage battery cells 1 in series, and further includes a push-pull boosting module 3 and an inversion grid-connected module 4;
the push-pull boosting module 3 is connected with the storage battery pack 2 and boosts direct current output by the storage battery pack 2; the inversion grid-connected module 4 is connected with the push-pull boosting module 3, and converts the boosted direct current into alternating current and transmits the alternating current to a power grid;
the push-pull boosting module 3 comprises a transformer TRANS, a first MOS tube Q1, a second MOS tube Q2, a diode D1, an electrolytic capacitor C1 and an electrolytic capacitor C2; wherein the primary coil of the transformer TRANS has a first lead-out wire, a second lead-out wire, and a center tap; the secondary coil of the transformer TRANS is provided with a leading-out wire A and a leading-out wire B;
a first outgoing line of the transformer TRANS is connected with a drain electrode of the first MOS transistor Q1; a second outgoing line of the transformer TRANS is connected with a drain electrode of the second MOS transistor Q2; the gate of the first MOS transistor Q1 is connected to a PWM driving module (not shown) through a resistor R1;
the gate of the second MOS transistor Q2 is connected to a PWM driving module (not shown) through a resistor R3, and the PWM driving module outputs a PWM driving signal to control the first MOS transistor Q1 and the second MOS transistor Q2 to be turned on or off. The control of the on/off of the MOS transistor by the PWM driving signal is a common technique in the art and will not be described in detail herein.
The anode of the diode D1 is connected to the source of the first MOS transistor Q1 and the source of the second MOS transistor Q2, and the cathode of the diode D1 is connected to the center tap of the transformer TRANS;
the diode D1, the electrolytic capacitor C1 and the electrolytic capacitor C2 are connected in parallel;
the anode of the electrolytic capacitor C1 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C1 is connected with the anode of the diode D1; the anode of the electrolytic capacitor C2 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C2 is connected with the anode of the diode D1;
the diode D1 is used for absorbing the inverse peak signal generated when the first MOS transistor Q1 and the second MOS transistor Q2 are switched.
Example 2
As shown in fig. 1 to 6, a storage battery pack discharging apparatus includes a storage battery pack 2 formed by connecting a plurality of storage battery cells 1 in series, and further includes a push-pull boosting module 3 and an inversion grid-connected module 4;
the push-pull boosting module 3 is connected with the storage battery pack 2 and boosts direct current output by the storage battery pack 2; the inversion grid-connected module 4 is connected with the push-pull boosting module 3, and converts the boosted direct current into alternating current and transmits the alternating current to a power grid;
the push-pull boosting module 3 comprises a transformer TRANS, a first MOS tube Q1, a second MOS tube Q2, a diode D1, an electrolytic capacitor C1 and an electrolytic capacitor C2;
a first outgoing line of the transformer TRANS is connected with a drain electrode of the first MOS transistor Q1; a second outgoing line of the transformer TRANS is connected with a drain electrode of the second MOS transistor Q2;
the anode of the diode D1 is connected to the source of the first MOS transistor Q1 and the source of the second MOS transistor Q2, and the cathode of the diode D1 is connected to the center tap of the transformer TRANS;
the diode D1, the electrolytic capacitor C1 and the electrolytic capacitor C2 are connected in parallel;
the anode of the electrolytic capacitor C1 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C1 is connected with the anode of the diode D1; the anode of the electrolytic capacitor C2 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C2 is connected with the anode of the diode D1;
the diode D1 is used for absorbing the inverse peak signal generated when the first MOS transistor Q1 and the second MOS transistor Q2 are switched.
The inversion grid-connected module comprises a fourth MOS transistor Q4, a fifth MOS transistor Q5, a sixth MOS transistor Q6, a seventh MOS transistor Q7, an inductor L1, a capacitor C24 and 4 PWM driving circuits. Each PWM driving circuit is respectively connected to the gate of the fourth MOS transistor Q4-Q7, and is configured to output a PWM driving signal to the fourth MOS transistor Q4-Q7, so as to control the conduction or the shutdown of each MOS transistor, thereby implementing an inversion process of converting direct current into alternating current.
The drain electrode of the fourth MOS tube Q4 is connected with the drain electrode of the sixth MOS tube Q6;
the source electrode of the fifth MOS transistor Q5 is connected with the source electrode of the seventh MOS transistor Q7;
one end of the inductor L1 is connected with the source electrode of the fourth MOS transistor Q4 and the drain electrode of the fifth MOS transistor Q5;
the other end of the inductor L1 is connected with one end of a capacitor C24; the other end of the capacitor C24 is connected with the source electrode of a sixth MOS tube Q6 and the drain electrode of a seventh MOS tube Q7;
each PWM driving circuit consists of a high-speed optocoupler U1, a PNP triode Q3, a capacitor C3, a capacitor C4, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and a resistor R9.
Example 3
As shown in fig. 2 to 9, a storage battery pack discharging apparatus includes a storage battery pack 2 formed by connecting a plurality of storage battery cells 1 in series, and further includes a push-pull boosting module 3 and an inversion grid-connected module 4;
the push-pull boosting module 3 is connected with the storage battery pack 2 and boosts direct current output by the storage battery pack 2; the inversion grid-connected module 4 is connected with the push-pull boosting module 3, and converts the boosted direct current into alternating current and transmits the alternating current to a power grid;
the push-pull boosting module 3 comprises a transformer TRANS, a first MOS tube Q1, a second MOS tube Q2, a diode D1, an electrolytic capacitor C1 and an electrolytic capacitor C2;
a first outgoing line of the transformer TRANS is connected with a drain electrode of the first MOS transistor Q1; a second outgoing line of the transformer TRANS is connected with a drain electrode of the second MOS transistor Q2;
the anode of the diode D1 is connected to the source of the first MOS transistor Q1 and the source of the second MOS transistor Q2, and the cathode of the diode D1 is connected to the center tap of the transformer TRANS;
the diode D1, the electrolytic capacitor C1 and the electrolytic capacitor C2 are connected in parallel;
the anode of the electrolytic capacitor C1 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C1 is connected with the anode of the diode D1; the anode of the electrolytic capacitor C2 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C2 is connected with the anode of the diode D1;
the diode D1 is used for absorbing the peak reversal signal generated when the first MOS tube Q1 and the second MOS tube Q2 are switched, so that the normal operation of the storage battery push-pull boosting circuit is ensured;
the utility model considers the series problems of the safety of the storage battery in practical application,
the inversion grid-connected module comprises a fourth MOS transistor Q4, a fifth MOS transistor Q5, a sixth MOS transistor Q6, a seventh MOS transistor Q7, an inductor L1, a capacitor C24 and 4 PWM driving circuits. Each PWM driving circuit is respectively connected to the gate of the fourth MOS transistor Q4-Q7, and is configured to output a PWM driving signal to the fourth MOS transistor Q4-Q7, so as to control the conduction or the shutdown of each MOS transistor, thereby implementing an inversion process of converting direct current into alternating current.
The drain electrode of the fourth MOS tube Q4 is connected with the drain electrode of the sixth MOS tube Q6;
the source electrode of the fifth MOS transistor Q5 is connected with the source electrode of the seventh MOS transistor Q7;
one end of the inductor L1 is connected with the source electrode of the fourth MOS transistor Q4 and the drain electrode of the fifth MOS transistor Q5;
the other end of the inductor L1 is connected with one end of a capacitor C24; the other end of the capacitor C24 is connected with the source electrode of a sixth MOS tube Q6 and the drain electrode of a seventh MOS tube Q7;
each PWM driving circuit is composed of a high-speed optocoupler U1, a PNP triode Q3, a capacitor C3, a capacitor C4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, and a resistor R9, and the circuit diagram is as shown in fig. 5.
Because the frequency of the inverted PWM control signal is basically over 20KHz, in the embodiment, the high-speed optocoupler U1 is 3120 of HP company and is an optocoupler with higher speed. Since the frequency of the inverted PWM control signal is basically over 20KHz, a high-speed optical coupler is necessary. PNP triode Q3 is connected high-speed opto-coupler U1 with between the fourth MOS pipe Q4, PNP triode Q3 is in when fourth MOS pipe Q4 drive current grow, PNP triode Q3 switches on, and the excessive pressure overcurrent damage can not appear in protection fourth MOS pipe Q4. In practical application, 4 driving tubes or 6 driving tubes are conventionally adopted to complete inversion from a direct current power supply to an alternating current power supply. The PWM signal in the inversion process can be output by a CPU, and can also be realized by a special inversion control chip.
The positive pole of the storage battery pack 2 is connected with the center tap of the primary coil of the transformer TRANS, and the negative pole of the storage battery pack 2 is connected with the ground; and a lead-out wire A of the secondary coil of the transformer TRANS is connected with the drain electrode of the fourth MOS transistor Q4, and a lead-out wire B of the secondary coil of the transformer TRANS is connected with the source electrode of the fifth MOS transistor Q5.
The device also comprises a storage battery monomer monitoring module 5, a storage battery group total voltage and current monitoring module 6 and a data processing module 7;
each storage battery monomer 1 is connected with a storage battery monomer monitoring module 5; the storage battery monomer monitoring module 5 is used for acquiring voltage data and temperature data of the storage battery monomer 1 connected with the storage battery monomer monitoring module and transmitting the acquired data to the data processing module 7;
the storage battery pack total voltage and current monitoring module 6 is connected with two ends of the storage battery pack 2 and used for acquiring total voltage data and current data of the storage battery pack 2 and transmitting the acquired data to the data processing module 7;
the data processing module 7 is respectively connected with the storage battery monomer monitoring module 5 and the storage battery pack total voltage and current monitoring module 6.
Preferably, the battery cell monitoring module 5 includes a self-powered power circuit, a testing circuit and a data transmission circuit, and a circuit diagram thereof is shown in fig. 8. The circuit diagram of the battery pack total voltage and current monitoring module 6 is shown in fig. 9.
Preferably, the battery cell monitoring module 5 is directly connected with the positive and negative terminals of the battery cell 1.
Preferably, the alternating current is a single-phase or three-phase alternating current.
Preferably, a current sensor 8 is arranged in the storage battery pack total voltage and current monitoring module 6, the current sensor 8 is connected with the storage battery pack 2 in series, and current data are acquired through the current sensor 8.
Preferably, the battery cell monitoring module 5 completes the voltage data acquisition of the battery cell 1 by using an integrating circuit. The electronic switch U30 may switch in a standard voltage signal for integration, and the integrated data of the test signal may be compared with the standard voltage signal to obtain an accurate voltage value of the test signal.
The high voltage-resistant switching power supply IC U2 can support voltage input from 36V to 600V. The total voltage of the storage battery pack is determined according to the number of the storage battery monomers connected in series, the total voltage range of the storage battery pack is dozens of volts to hundreds of volts, and the self-power supply problem is solved by adopting a high-voltage-withstanding switching power supply IC U2.
In the push-pull boosting module 3, the requirement of boosting the battery pack can be achieved in a wide range by changing the duty ratios of the PWM driving signals input from the gate of the first MOS transistor Q1 and the gate of the second MOS transistor Q2. On the secondary side of the transformer TRANS, high-speed diodes are used for rectification and a large-capacity electrolytic capacitor is used for filtering, so that a high-voltage power supply can be obtained.
The data processing module 7 is used for analog-to-digital conversion, and further, the data processing module 7 transmits data to a storage battery pack discharge control device (the storage battery pack discharge control device is the prior art, and is not described herein any more), so that remote monitoring of a storage battery monomer or a storage battery pack is realized. The storage battery pack discharge control device can be used for remotely controlling the data processing module 7, and judging whether to stop the discharge of the storage battery pack 2 or not through the data processing module 7 according to the voltage data and the temperature data of the storage battery monomer 1 and the total voltage data and the current data of the storage battery pack 2; specifically, when the voltage data of the storage battery monomer 1 shows that the voltage of the storage battery monomer is too low or the temperature data shows that the temperature of the storage battery monomer 1 is too high, indicating that the storage battery monomer may have a problem, the data processing module 7 terminates the discharge of the storage battery pack 2; when the total voltage data of the storage battery pack 2 shows that the voltage of the storage battery pack 2 is too low or the current data shows that the current of the storage battery pack 2 is too high, indicating that the storage battery pack 2 may have a problem, the data processing module 7 terminates the discharge of the storage battery pack 2. By terminating the discharge of the battery pack 2, the problem caused by the battery pack 2 still discharging in the case where a problem exists is avoided.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A storage battery pack discharging device comprises a storage battery pack formed by connecting a plurality of storage battery monomers in series, and is characterized by further comprising a push-pull boosting module and an inversion grid-connected module;
the push-pull boosting module is connected with the storage battery pack and used for boosting the direct current output by the storage battery pack; the inversion grid-connected module is connected with the push-pull boosting module, and converts the boosted direct current into alternating current and transmits the alternating current to a power grid;
the push-pull boosting module comprises a transformer, a first MOS transistor Q1, a second MOS transistor Q2, a diode D1, an electrolytic capacitor C1 and an electrolytic capacitor C2; the primary coil of the transformer comprises a first outgoing line, a second outgoing line and a center tap;
the first outgoing line is connected with the drain electrode of the first MOS transistor Q1; the second outgoing line is connected with the drain electrode of the second MOS transistor Q2;
the anode of the diode D1 is connected with the source of the first MOS tube Q1 and the source of the second MOS tube Q2, and the cathode of the diode D1 is connected with the center tap;
the diode D1, the electrolytic capacitor C1 and the electrolytic capacitor C2 are connected in parallel;
the anode of the electrolytic capacitor C1 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C1 is connected with the anode of the diode D1; the anode of the electrolytic capacitor C2 is connected with the cathode of the diode D1, and the cathode of the electrolytic capacitor C2 is connected with the anode of the diode D1;
the diode D1 is used for absorbing the inverse peak signal generated when the first MOS transistor Q1 and the second MOS transistor Q2 are switched.
2. The battery pack discharging device according to claim 1, wherein the inverter grid-connected module comprises a fourth MOS transistor Q4, a fifth MOS transistor Q5, a sixth MOS transistor Q6, a seventh MOS transistor Q7, an inductor L1, a capacitor C24, and 4 PWM driving circuits; the 4 PWM driving circuits are respectively connected with the grids of a fourth MOS transistor Q4, a fifth MOS transistor Q5, a sixth MOS transistor Q6 and a seventh MOS transistor Q7;
the drain electrode of the fourth MOS tube Q4 is connected with the drain electrode of the sixth MOS tube Q6;
the source electrode of the fifth MOS transistor Q5 is connected with the source electrode of the seventh MOS transistor Q7;
one end of the inductor L1 is connected with the source electrode of the fourth MOS transistor Q4 and the drain electrode of the fifth MOS transistor Q5;
the other end of the inductor L1 is connected with one end of a capacitor C24; the other end of the capacitor C24 is connected to the source of the sixth MOS transistor Q6 and the drain of the seventh MOS transistor Q7.
3. The battery pack discharging device according to claim 1, further comprising a battery cell monitoring module, a battery pack total voltage and current monitoring module and a data processing module;
each storage battery monomer is connected with a storage battery monomer monitoring module; the storage battery monomer monitoring module is used for acquiring voltage data and temperature data of the storage battery monomer connected with the storage battery monomer monitoring module and transmitting the acquired data to the data processing module;
the storage battery pack total voltage and current monitoring module is connected with two ends of the storage battery pack and used for acquiring total voltage data and current data of the storage battery pack and transmitting the acquired data to the data processing module;
and the data processing module is respectively connected with the storage battery monomer monitoring module and the storage battery pack total voltage and current monitoring module.
4. The battery pack discharging apparatus of claim 3, wherein the battery cell monitoring module comprises a self-powered power circuit, a test circuit, and a data transmission circuit.
5. The battery pack discharging apparatus according to claim 3, wherein the battery cell monitoring module is directly connected to positive and negative terminals of the battery cell.
6. The battery pack discharging apparatus according to claim 1, wherein the alternating current is a single-phase or three-phase alternating current.
7. The battery pack discharging device according to claim 1, wherein a current sensor is arranged in the battery pack total voltage and current monitoring module, the current sensor is connected with the battery pack in series, and current data is collected through the current sensor.
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| CN201921758685.0U CN210629144U (en) | 2019-10-18 | 2019-10-18 | Storage battery pack discharging device |
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| CN201921758685.0U CN210629144U (en) | 2019-10-18 | 2019-10-18 | Storage battery pack discharging device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115622105A (en) * | 2022-11-09 | 2023-01-17 | 国网河南省电力公司济源供电公司 | Charging and discharging system of energy storage type electric automobile charging pile |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115622105A (en) * | 2022-11-09 | 2023-01-17 | 国网河南省电力公司济源供电公司 | Charging and discharging system of energy storage type electric automobile charging pile |
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Address after: 655099 No.137, middle section of Cuifeng Road, Qujing City, Yunnan Province Patentee after: Qujing Power Supply Bureau, Yunnan Power Grid Go., Ltd. Address before: 655099 No.137 Cuifeng Road, Qilin District, Qujing City, Yunnan Province Patentee before: Qujing Power Supply Bureau, Yunnan Power Grid Go., Ltd. |
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