CN218867946U - Aerospace lithium ion storage battery pack external electric connector non-electric-plugging system - Google Patents
Aerospace lithium ion storage battery pack external electric connector non-electric-plugging system Download PDFInfo
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- CN218867946U CN218867946U CN202222889009.5U CN202222889009U CN218867946U CN 218867946 U CN218867946 U CN 218867946U CN 202222889009 U CN202222889009 U CN 202222889009U CN 218867946 U CN218867946 U CN 218867946U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to a lithium ion storage battery for aerospace does not take electric mortiser pull system to external electric connector, adopts the integrated design, with in the former electrical source controller about the battery discharge, sampling, balanced switch and control circuit and storage battery integration in an organic whole, under the default state, storage battery is external electric connector all not electrified, the potential safety hazard that the electric mortiser pull exists is taken to the cable when having avoided ground test, has improved ground test's security and reliability, ensures whole star and adds electric safety. The technology improves the reliability and safety of the lithium ion storage battery pack when the lithium ion storage battery pack participates in the whole satellite test, and simultaneously ensures the accuracy of voltage sampling of the storage battery monomer. The utility model discloses a design engineering realizes easily, has important engineering using value to the lithium ion storage battery safety design for the satellite.
Description
Technical Field
The utility model relates to an aerospace power supply technical field, concretely relates to lithium ion storage battery for spaceflight does not take electric mortiser pull system to external electric connector.
Background
The lithium ion storage battery pack is used as an energy storage power supply of the satellite, has the main functions of converting electric energy into chemical energy during charging and converting the chemical energy into electric energy during discharging, is mainly used for providing electric energy for the satellite during a launching active section and an in-orbit earth shadow period, is used for supplying power by combining a solar battery when the satellite executes a high-power task, and has a vital function as an energy heart of the whole satellite.
The traditional lithium ion storage battery pack selects corresponding monomer series and parallel design according to the energy balance requirement, and then accesses energy into a power supply management unit through an external electric connector through a whole satellite cable network to participate in whole satellite energy supply and distribution. The design is simple and direct, the contact of the external electric connector of the storage battery pack is directly connected with the compression joint terminal of the storage battery pack through the conducting wire, so that the external electric connector of the storage battery pack is always electrified, the whole star cable is electrified and plugged in and out in the plugging and unplugging operation process, if the cable plugging and unplugging operation of an operator is not standard, the ignition phenomenon can be caused, and the potential safety hazard exists. And the sampling voltage of the single storage battery is accessed to a battery management part in the power management unit through the whole star cable network, so that the circuit is too long and is easily interfered by other circuits, the sampling voltage of the single storage battery generates larger error, the balancing function of the single storage battery is influenced, the voltage inconsistency of the lithium ion single battery is intensified, and the service life of the storage battery is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lithium ion storage battery is without electric plug system to external electric connector for spaceflight, this design by the relay, charge freewheel diode, CPU treater, balanced drive and power circuit, monomer sampling circuit, CAN communication circuit etc. and constitute, the denso process flow is simple, the device lectotype is conventional components and parts, easily engineering realization.
The technical solution of the utility model is that:
an external electric connector non-electric plugging system of a lithium ion storage battery pack for spaceflight comprises: the device comprises a discharge control module and a sampling equalization module;
the positive power line of the storage battery enters the discharge control module through a power lead, the positive power line of the storage battery is connected with a discharge switch relay in the discharge control module, and the discharge control module provides a storage battery charge and discharge interface externally through an external electric connector; in a default state, the discharge switch relay is in a disconnected state, so that the storage battery pack is ensured not to be charged to a storage battery charge and discharge interface arranged at the output end of the discharge control module; the discharge switch relay is used for changing the on-off state between the discharge control module and the positive line of the on-satellite bus;
the single voltage of each battery monomer in the storage battery pack enters a sampling equalization module through a signal lead; the sampling and balancing module samples and compares the single voltage and adjusts the charge-discharge state of the single battery according to the sampling and comparing result; the sampling equalization module receives a control instruction of an on-satellite computer through a communication bus and changes the on-off state of the discharge switch relay.
Preferably, the sample equalization module comprises: the device comprises a single sampling circuit, a voltage balancing module and a lower computer;
the single sampling circuit is connected with the output end of a battery monomer in the storage battery pack, and is used for collecting the voltage of the battery monomer and sending the voltage to the lower computer through a sampling port;
the lower computer receives a control instruction of the satellite computer through the communication bus and changes the on-off state of the discharge switch relay; the lower computer receives the monomer voltage, samples and compares the monomer voltage, generates a balancing N command, and sends the balancing N command to the voltage balancing module through the command port;
and the voltage balancing module adjusts the charge-discharge state of the single battery in the storage battery pack according to the balancing N instruction.
Preferably, the lower computer is used as a network communication slave node and realizes information exchange with the star service host computer through the bus.
Preferably, each battery cell is provided with a corresponding cell sampling circuit and a cell voltage equalizing circuit.
Preferably: the battery discharge control module includes: a relay K2, a resistor R304, a diode D301, a diode D307, and a diode D308;
a common contact of the relay K2 is connected with a power positive line of the storage battery pack, a normally-off contact of the relay K2 is connected with a positive line of a bus on the satellite, a command end of a normally-off contact solenoid of the relay K2 is connected with a discharge opening command, and a command end of a normally-on contact solenoid of the relay K2 is connected with a discharge closing command; the anode of the diode D301 is connected with a positive line of the on-satellite bus, and the cathode of the diode D301 is connected with a positive line of the power of the storage battery pack; one end of the resistor R304 is connected with the relay instruction power supply, and the other end of the resistor R is connected with the instruction coil power supply contact of the relay K2; the anode of the diode D308 is connected with the normally-off contact coil instruction end of the relay K2; and the anode of the diode D307 is connected with the normally open contact solenoid command end of the relay K2.
Preferably: the relay K2 adopts a double-wire-pack relay.
Preferably: the monomer sampling circuit includes: the circuit comprises a resistor R102-N, a resistor R104-N, a resistor R105-N, a resistor R106-N, a resistor R108-N, a resistor R109-N, a resistor R110-N, an operational amplifier U1, an operational amplifier U2, a voltage regulator tube D13-N and a capacitor C41-N;
one end of the resistor R104-N is connected with the positive end of the monomer N, the other end of the resistor R104-N is connected with one end of the resistor R110-N, and the other end of the resistor R110-N is connected with the negative end of the monomer 1; one end of a resistor R106-N is connected with one end of a resistor R104-N, the other end of the resistor R106-N is connected with the non-inverting input end of the operational amplifier U1, one end of a resistor R102-N is connected with the non-inverting input end of the operational amplifier U1, and the other end of the resistor R102-N is grounded; one end of the resistor R105-N is connected with the negative end of the monomer N, the other end of the resistor R105-N is connected with one end of the resistor R109-N, and the other end of the resistor R109-N is connected with the negative end of the monomer 1; one end of a resistor R108-N is connected with one end of a resistor R105-N, the other end of the resistor R108-N is connected with the inverting input end of the operational amplifier U1, one end of a resistor R111-N is connected with the inverting input end of the operational amplifier U1, and the other end of the resistor R111-N is connected with the output end of the operational amplifier U1; one end of the resistor R273-N is connected with the output end of the operational amplifier U1, and the other end of the resistor R273-N is connected with the non-inverting input end of the operational amplifier U2; one end of the resistor R277-N is connected with the output end of the operational amplifier U2, and the other end of the resistor R277-N is connected with the inverting input end of the operational amplifier U2; one end of a resistor R276-N is connected with the output end of the operational amplifier U2, and the other end of the resistor R276-N is connected with the cathode of the voltage regulator tube D13-N; one end of the resistor R318-N is connected with the output end of the operational amplifier U2, and the other end of the resistor R318-N is grounded; the cathode of the voltage stabilizing tube D13-N is used as an output end to output a voltage sampling signal to a lower computer, and the anode of the voltage stabilizing tube D13-N is grounded; one end of the capacitor C41-N is connected with the cathode of the voltage stabilizing tube D13-N; the other end is grounded;
n represents the number of any storage battery monomer in the storage battery pack, N belongs to [1, N ], and N is the total number of the monomers in the storage battery pack.
Preferably: the cell voltage equalizing circuit includes: the circuit comprises a resistor R249-N, a resistor R250-N, a resistor R251-N, a resistor R252-N, a resistor R253-N and a PNP type triode Q213-N;
one end of the resistor R249-N is connected with the positive end of the monomer N, and the other end of the resistor R249-N is connected with the base electrode of the PNP type triode Q213-N; one end of the resistor R253-N is connected with the collector of the Q213-N, and the other end of the resistor R253-N is connected with the negative end of the monomer N; an emitting electrode of the PNP type triode Q213-N is connected with the positive end of the monomer N; one end of the resistor R251-N is connected with the base electrode of the PNP type triode Q213-N, and the other end of the resistor R251-N is connected with the emitting electrode of the PNP type triode Q214-N; one end of the resistor R250-N is connected with one end of the resistor R251-N, and the other end of the resistor R250-N is connected with the base electrode of the PNP type triode Q214-N; one end of the resistor R252-N is used as an input end to receive the instruction end which is transmitted by the lower computer and is connected with the balancing N, and the other end of the resistor R252-N is connected with the base electrode of the PNP type triode Q214-N; the collector electrode of the PNP type triode Q214-N is connected with the negative end of the monomer N;
n represents the number of any storage battery monomer in the storage battery pack, N belongs to [1, N ], and N is the total number of the monomers in the storage battery pack.
Compared with the prior art, the utility model the advantage lie in:
and the storage battery pack and the storage battery management unit are integrated into a whole by adopting an integrated design. The positive line of storage battery power passes through the power wire and gets into the control module that discharges after, is connected with the discharge switch relay, through externally providing the battery charge-discharge interface to external electric connector, under the default state, the discharge switch of storage battery is in the off-state, ensures that the battery charge-discharge interface of control module output is uncharged.
A single sampling and equalizing signal line of the storage battery enters the equalizing module through a signal wire, an operational amplifier integrated circuit is used for controlling and converting, then a signal is sent to a lower computer in the equalizing module through a follower, an emitter follower is used for realizing the isolation of a signal output end and a chip input end, and the interference of impedance mismatching on the signal acquisition and use is avoided.
And the lower computer of the balancing module finishes the functions of collecting the single voltage and the whole group voltage of the storage battery, executing a remote control instruction, judging the balancing state, performing autonomous balancing control and the like. Meanwhile, as a network communication slave node, the information exchange with the housekeeping host is realized through the bus.
This utility model compares traditional lithium ion storage battery for aerospace design and has following advantage: the discharge control circuit and the storage battery are integrated, so that the problem of live insertion and extraction in the ground whole-satellite test of the storage battery pack is solved, and the safety and reliability of the ground test are effectively improved; meanwhile, the storage battery sampling equalization circuit and the storage battery are integrated, so that the error of the whole satellite cable on the single body sampling is reduced.
Drawings
Fig. 1 is a block diagram of an external electric connector without electric plug system of a lithium ion battery pack for aerospace use.
Fig. 2 is a product diagram of an external electrical connector of a lithium ion battery pack for aerospace without an electrical plug system according to an embodiment of the present invention.
Fig. 3 is a structural block diagram of an external electrical connector of a lithium ion battery pack for aerospace without an electrical plug system according to an embodiment of the present invention.
Fig. 4 (a) is a schematic diagram of the battery discharge control module of the present invention.
Fig. 4 (b) is the schematic diagram of the sampling circuit of the single battery of the present invention.
Fig. 4 (c) is a schematic diagram of the battery cell voltage equalization circuit of the present invention.
Fig. 4 (d) is a schematic diagram of the battery cell control circuit of the present invention.
Detailed Description
The following will explain in detail the design method of the non-electric plug of the external electric connector of the lithium ion storage battery pack for spaceflight in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, the utility model relates to an external electric connector of lithium ion storage battery group does not have electric plug system for space flight, include: the device comprises a discharge control module and a sampling equalization module;
the storage battery pack power positive line enters the discharge control module through a power lead, the storage battery pack power positive line is connected with a discharge switch relay in the discharge control module, and the discharge control module provides a storage battery charge-discharge interface externally through an external electric connector and is used for outputting power to the on-board bus; in a default state, a discharge switch relay of the storage battery pack is in a disconnected state, so that the storage battery pack is ensured to be uncharged to a storage battery charge and discharge interface arranged at the output end of the discharge control module;
the storage battery monomer sampling and equalizing signal (namely monomer voltage) enters the storage battery management unit through a signal lead and is sent to a monomer sampling circuit in the sampling equalizing module through an internal electric connector; sampling and comparing according to the voltage signal of each single body, and adjusting the voltage of the single body (namely the charging and discharging state of the storage battery single body) according to the sampling and comparing result.
The solar array supplies power to the storage battery pack through the bus, or the storage battery pack discharges power and supplies energy to a load through the bus.
The sample equalization module includes: monomer sampling circuit, voltage equalization module and lower computer. Each monomer is provided with a corresponding monomer sampling circuit and a corresponding monomer voltage balancing circuit. Hereinafter, N represents the number of any battery cell in the battery pack, and N is the total number of cells in the battery pack [1, N ].
And the lower computer finishes the acquisition of the single voltage and the whole group of voltage of the storage battery and the execution of the control instruction of the discharging switch relay. And the discharge switch relay is used for changing the on-off state between a discharge control module in the storage battery management unit and a positive line of the satellite bus. The lower computer receives a control instruction of the satellite computer through the communication bus, changes the on-off state of the discharge switch relay, and adjusts the voltage of the single body to realize the independent single body balancing function. Meanwhile, the lower computer is used as a network communication slave node and realizes information exchange with the housekeeping host computer through the bus.
As shown in fig. 4 (a), the battery discharge control module uses a double-coil relay, including: relay K2, resistor R304, diode D301, diode D307, and diode D308. A common contact of the relay K2 is connected with a power positive line of the storage battery pack, a normally-off contact of the relay K2 is connected with a positive line of a bus on the satellite, a command end of a normally-off contact solenoid of the relay K2 is connected with a discharge opening command, and a command end of a normally-on contact solenoid of the relay K2 is connected with a discharge closing command; the anode of the diode D301 is connected with a positive line of the on-satellite bus, and the cathode of the diode D301 is connected with a positive line of the power of the storage battery pack; one end of the resistor R304 is connected with the relay instruction power supply, and the other end of the resistor R is connected with the instruction coil power supply contact of the relay K2; the anode of the diode D308 is connected with the normally-open contact solenoid instruction end of the relay K2; the anode of the diode D307 is connected with the normally open contact solenoid command end of the relay K2.
As shown in fig. 4 (b), the single-body sampling circuit includes: the circuit comprises a resistor R102-N, a resistor R104-N, a resistor R105-N, a resistor R106-N, a resistor R108-N, a resistor R109-N, a resistor R110-N, an operational amplifier U1, an operational amplifier U2, a voltage regulator tube D13-N and a capacitor C41-N;
one end of the resistor R104-N is connected with the positive end of the monomer N, the other end of the resistor R104-N is connected with one end of the resistor R110-N, and the other end of the resistor R110-N is connected with the negative end of the monomer 1; one end of a resistor R106-N is connected with one end of the resistor R104-N, the other end of the resistor R106-N is connected with the non-inverting input end of the operational amplifier U1, one end of a resistor R102-N is connected with the non-inverting input end of the operational amplifier U1, and the other end of the resistor R102-N is grounded; one end of the resistor R105-N is connected with the negative end of the monomer N, the other end of the resistor R105-N is connected with one end of the resistor R109-N, and the other end of the resistor R109-N is connected with the negative end of the monomer 1; one end of a resistor R108-N is connected with one end of a resistor R105-N, the other end of the resistor R108-N is connected with the inverting input end of the operational amplifier U1, one end of a resistor R111-N is connected with the inverting input end of the operational amplifier U1, and the other end of the resistor R111-N is connected with the output end of the operational amplifier U1; one end of the resistor R273-N is connected with the output end of the operational amplifier U1, and the other end of the resistor R273-N is connected with the non-inverting input end of the operational amplifier U2; one end of the resistor R277-N is connected with the output end of the operational amplifier U2, and the other end of the resistor R277-N is connected with the inverting input end of the operational amplifier U2; one end of a resistor R276-N is connected with the output end of the operational amplifier U2, and the other end of the resistor R276-N is connected with the cathode of the voltage regulator tube D13-N; one end of the resistor R318-N is connected with the output end of the operational amplifier U2, and the other end of the resistor R318-N is grounded; the cathode of the voltage-regulator tube D13-N is used as an output end to output a voltage sampling signal to a lower computer, and the anode of the voltage-regulator tube D13-N is grounded; one end of the capacitor C41-N is connected with the cathode of the voltage stabilizing tube D13-N; the other end is grounded.
As shown in fig. 4 (c), the cell voltage equalizing circuit includes: the circuit comprises a resistor R249-N, a resistor R250-N, a resistor R251-N, a resistor R252-N, a resistor R253-N and a PNP type triode Q213-N;
one end of the resistor R249-N is connected with the positive end of the monomer N, and the other end of the resistor R249-N is connected with the base electrode of the PNP type triode Q213-N; one end of the resistor R253-N is connected with the collector of the Q213-N, and the other end of the resistor R253-N is connected with the negative end of the monomer N; the emitting electrode of the PNP type triode Q213-N is connected with the positive end of the monomer N; one end of the resistor R251-N is connected with the base electrode of the PNP type triode Q213-N, and the other end of the resistor R251-N is connected with the emitting electrode of the PNP type triode Q214-N; one end of the resistor R250-N is connected with one end of the resistor R251-N, and the other end of the resistor R250-N is connected with the base electrode of the PNP type triode Q214-N; one end of the resistor R252-N is used as an input end to receive the instruction end which is transmitted by the lower computer and is connected with the balancing N, and the other end of the resistor R252-N is connected with the base electrode of the PNP type triode Q214-N; the collector electrode of the PNP type triode Q214-N is connected with the negative end of the monomer N.
As shown in fig. 4 (d), one specific circuit connection manner of the battery cell lower computer circuit is as follows: a single N sampling signal (output voltage sampling signal) of the single sampling circuit is connected with a sampling end of a lower computer M1; the balancing N instruction output by the single voltage balancing circuit is connected with an instruction output port of the lower computer M1; the communication bus is connected with the communication end of the lower computer M1 bus.
As shown in fig. 2, for the design model of the embodiment of the utility model, battery management unit and lithium ion battery pack are integrated in an organic whole, wherein the one side that battery management unit is close to battery pack is the control module that discharges, and the outside is the balanced module of sampling.
As shown in fig. 3, after entering the discharge control module through the power conducting wire, the positive power line of the storage battery pack is connected to the discharge switch relay, and provides a storage battery charge/discharge interface to the outside through the external electrical connector, and in a default state, the discharge switch (two relays connected in parallel) of the storage battery pack is in a disconnected state, so that the storage battery charge/discharge interface at the output end of the discharge control module is ensured to be uncharged. A single sampling and equalizing signal wire of the storage battery enters the discharge control module through a signal lead, and then is sent to the sampling and equalizing module through the internal electric connector, the sampling and equalizing module samples the voltage of the single, and sends the signal to a CPU chip 80C51 F040 in the sampling and equalizing module.
As shown in fig. 4 (a), when the storage battery is in a standing state, the discharge switches K1 and K2 are disconnected, the external interface of the storage battery is not electrified, and the plugging operation of the whole satellite cable can be performed on the premise of ensuring safety. The discharge switch adopts two 2JB5-1-12 relays connected in parallel to ensure derating margin; the input end of a relay coil is connected in series with two parallel 10-ohm small resistors, diodes are connected in parallel at the two ends of the coil to provide an energy release loop, the relay ensures that a shell is insulated from an equipment shell in the installation mode, the shell and the shell of the relay realize 100 kiloohm high-resistance grounding, and the interlocking fault caused by short circuit or shell lapping of internal parts of the relay is avoided.
As shown in fig. 4 (b), the operational amplifier U1 and the operational amplifier U2 in the single battery sampling circuit adopt the LM124 to form a differential amplification circuit for acquisition, and the LM124 is adopted to form an emitter follower to realize the isolation between the single sampling signal output end and the CPU chip input end, thereby avoiding the interference caused by impedance mismatch to the signal acquisition.
As shown in fig. 4 (c), the battery cell balancing circuit adopts an on-off switch and a shunt resistor connected in parallel to each lithium ion battery cell. The on-off switch adopts 2N2907, the selection of the shunt resistance value ensures that the shunt current on the resistor is far larger than the self-discharge current of the battery, and the general equivalent shunt resistance is 20-40 ohms, so that the effect of equalizing charge can be achieved. The balancing bypass control circuit ensures that the voltages of all the single batteries of the lithium ion battery are balanced, the voltage difference between the voltages of the single batteries of the storage battery is smaller than a first threshold value, and the value range of the first threshold value is 30-60 mV.
Although the present invention has been disclosed in the preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can use the above-mentioned method and technical contents to make possible changes and modifications to the technical solution of the present invention without departing from the spirit and scope of the present invention, therefore, any simple modification, equivalent changes and modifications made to the above embodiments by the technical substance of the present invention all belong to the protection scope of the technical solution of the present invention.
The details of the present invention not described in detail in the specification are well known to those skilled in the art.
Claims (8)
1. The utility model provides an external electric connector of lithium ion storage battery group does not have electric plug system for space flight which characterized in that includes: the device comprises a discharge control module and a sampling equalization module;
the positive power line of the storage battery enters the discharge control module through a power lead, the positive power line of the storage battery is connected with a discharge switch relay in the discharge control module, and the discharge control module provides a storage battery charge and discharge interface externally through an external electric connector; in a default state, the discharge switch relay is in a disconnected state, so that the storage battery pack is ensured not to be charged to a storage battery charge and discharge interface arranged at the output end of the discharge control module; the discharge switch relay is used for changing the on-off state between the discharge control module and the positive line of the on-satellite bus;
the single voltage of each battery in the storage battery pack enters a sampling equalization module through a signal lead; the sampling and balancing module samples and compares the single voltage and adjusts the charge-discharge state of the single battery according to the sampling and comparing result; the sampling equalization module receives a control instruction of an on-satellite computer through a communication bus and changes the on-off state of the discharge switch relay.
2. The external electrical connector non-electric plugging system of the lithium ion storage battery pack for spaceflight according to claim 1, wherein the sampling equalization module comprises: the device comprises a single sampling circuit, a voltage balancing module and a lower computer;
the single body sampling circuit is connected with the output end of a battery single body in the storage battery pack, and is used for collecting the voltage of the single body and sending the voltage to the lower computer through a sampling port;
the lower computer receives a control instruction of the on-satellite computer through the communication bus to change the on-off state of the discharge switch relay; the lower computer receives the monomer voltage, samples and compares the monomer voltage, generates a balance N instruction and sends the balance N instruction to the voltage balance module through the instruction port;
and the voltage balancing module adjusts the charge-discharge state of the single battery in the storage battery pack according to the balancing N instruction.
3. The external electric connector system without electric plugging of the lithium ion storage battery pack for spaceflight as claimed in claim 2, wherein the lower computer is used as a network communication slave node to realize information exchange with the satellite host computer through a bus.
4. The external electric connector non-electric plugging system of the lithium ion storage battery pack for spaceflight as claimed in claim 2, wherein each battery cell is provided with a corresponding cell sampling circuit and a cell voltage equalizing circuit.
5. The non-electric plugging and unplugging system for the external electric connector of the lithium ion storage battery pack for spaceflight according to claim 4, is characterized in that: the battery discharge control module includes: a relay K2, a resistor R304, a diode D301, a diode D307, and a diode D308;
a common contact of the relay K2 is connected with a power positive line of the storage battery pack, a normally-off contact of the relay K2 is connected with a positive line of the on-satellite bus, a command end of a normally-off contact coil of the relay K2 is connected with a discharge turn-on command, and a command end of a normally-off contact coil of the relay K2 is connected with a discharge turn-off command; the anode of the diode D301 is connected with a positive line of the on-satellite bus, and the cathode of the diode D301 is connected with a positive line of the power of the storage battery pack; one end of the resistor R304 is connected with the instruction power supply of the relay, and the other end of the resistor R is connected with the instruction coil power supply contact of the relay K2; the anode of the diode D308 is connected with the normally-off contact coil instruction end of the relay K2; the anode of the diode D307 is connected with the normally open contact solenoid command end of the relay K2.
6. The external electric connector non-electric plugging system of the lithium ion storage battery pack for spaceflight according to claim 5, characterized in that: the relay K2 adopts a double-wire-pack relay.
7. The non-electric plugging and unplugging system for the external electric connector of the lithium ion storage battery pack for spaceflight according to claim 4, is characterized in that: the monomer sampling circuit includes: the circuit comprises a resistor R102-N, a resistor R104-N, a resistor R105-N, a resistor R106-N, a resistor R108-N, a resistor R109-N, a resistor R110-N, an operational amplifier U1, an operational amplifier U2, a voltage regulator tube D13-N and a capacitor C41-N;
one end of the resistor R104-N is connected with the positive end of the monomer N, the other end of the resistor R104-N is connected with one end of the resistor R110-N, and the other end of the resistor R110-N is connected with the negative end of the monomer 1; one end of a resistor R106-N is connected with one end of the resistor R104-N, the other end of the resistor R106-N is connected with the non-inverting input end of the operational amplifier U1, one end of a resistor R102-N is connected with the non-inverting input end of the operational amplifier U1, and the other end of the resistor R102-N is grounded; one end of the resistor R105-N is connected with the negative end of the monomer N, the other end of the resistor R105-N is connected with one end of the resistor R109-N, and the other end of the resistor R109-N is connected with the negative end of the monomer 1; one end of a resistor R108-N is connected with one end of a resistor R105-N, the other end of the resistor R108-N is connected with the inverting input end of the operational amplifier U1, one end of a resistor R111-N is connected with the inverting input end of the operational amplifier U1, and the other end of the resistor R111-N is connected with the output end of the operational amplifier U1; one end of the resistor R273-N is connected with the output end of the operational amplifier U1, and the other end of the resistor R273-N is connected with the non-inverting input end of the operational amplifier U2; one end of the resistor R277-N is connected with the output end of the operational amplifier U2, and the other end of the resistor R277-N is connected with the inverting input end of the operational amplifier U2; one end of a resistor R276-N is connected with the output end of the operational amplifier U2, and the other end of the resistor R276-N is connected with the cathode of the voltage regulator tube D13-N; one end of the resistor R318-N is connected with the output end of the operational amplifier U2, and the other end of the resistor R318-N is grounded; the cathode of the voltage-regulator tube D13-N is used as an output end to output a voltage sampling signal to a lower computer, and the anode of the voltage-regulator tube D13-N is grounded; one end of the capacitor C41-N is connected with the cathode of the voltage stabilizing tube D13-N; the other end is grounded;
n represents the number of any storage battery monomer in the storage battery pack, N belongs to [1, N ], and N is the total number of the monomers in the storage battery pack.
8. The external electric connector non-electric plugging system of the lithium ion storage battery pack for spaceflight according to claim 4, characterized in that: the cell voltage equalization circuit includes: the circuit comprises a resistor R249-N, a resistor R250-N, a resistor R251-N, a resistor R252-N, a resistor R253-N and a PNP type triode Q213-N;
one end of the resistor R249-N is connected with the positive end of the monomer N, and the other end of the resistor R249-N is connected with the base electrode of the PNP type triode Q213-N; one end of the resistor R253-N is connected with the collector of the Q213-N, and the other end of the resistor R253-N is connected with the negative end of the monomer N; an emitting electrode of the PNP type triode Q213-N is connected with the positive end of the monomer N; one end of the resistor R251-N is connected with the base electrode of the PNP type triode Q213-N, and the other end of the resistor R251-N is connected with the emitting electrode of the PNP type triode Q214-N; one end of the resistor R250-N is connected with one end of the resistor R251-N, and the other end of the resistor R250-N is connected with the base electrode of the PNP type triode Q214-N; one end of the resistor R252-N is used as an input end to receive the instruction end which is transmitted by the lower computer and is connected with the balancing N, and the other end of the resistor R252-N is connected with the base electrode of the PNP type triode Q214-N; the collector electrode of the PNP type triode Q214-N is connected with the negative end of the monomer N;
n represents the number of any storage battery monomer in the storage battery pack, N belongs to [1, N ], and N is the total number of the monomers in the storage battery pack.
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| CN202222889009.5U CN218867946U (en) | 2022-10-31 | 2022-10-31 | Aerospace lithium ion storage battery pack external electric connector non-electric-plugging system |
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