CN216671737U - Power supply logic circuit of afterloading equalizing system - Google Patents
Power supply logic circuit of afterloading equalizing system Download PDFInfo
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- CN216671737U CN216671737U CN202123258082.4U CN202123258082U CN216671737U CN 216671737 U CN216671737 U CN 216671737U CN 202123258082 U CN202123258082 U CN 202123258082U CN 216671737 U CN216671737 U CN 216671737U
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Abstract
The utility model provides a power supply logic circuit of a rear-mounted equalizing system, which is applied to a battery box of an electric automobile, wherein the battery box is connected with a battery management system and the rear-mounted equalizing system, the battery management system is connected with a power supply, and the power supply logic circuit is respectively connected with the rear-mounted equalizing system and the battery management system; the power supply logic circuit stores the power supply electric energy of the power supply and controls whether to supply power to the afterloading balance system or not by detecting the voltage signal of the battery management system. The utility model realizes that the after-loading balancing system and the battery management system can work in a time-sharing power-on mode without mutual interference when sharing the wiring harness to be connected with the battery box, and the correctness of the battery management system for acquiring the battery data is not influenced.
Description
Technical Field
The utility model relates to the technical field of power supply, in particular to a power supply logic circuit of a rear-mounted equalizing system.
Background
When the whole electric automobile is designed, the power battery box is provided with an original battery management system so as to collect information such as voltage and temperature of the single batteries for management, and the capacities of the single batteries are inconsistent in the use process, so that the cruising ability and the safety performance of the electric automobile are influenced. Therefore, after the electric vehicle is used for a period of time, a rear-mounted balancing system is added to perform balancing management on each single battery so as to adjust the consistency of the capacity of each single battery and improve the cruising ability of a power battery box, but in the initial design stage of the electric vehicle, a power supply line and an interface connected with the battery box are not reserved for the rear-mounted balancing system, if the rear-mounted balancing system is directly connected with the battery box by using a connecting wire harness, the battery box needs to be disconnected and then connected by using an OT locking terminal or a welding mode, so that the workload is large, and the operation is difficult. The conventional method is to manufacture a three-way switching module, wherein one end of the three-way switching module is connected with an original wire harness for connecting a battery management system and a battery box, and the other two ends of the three-way switching module are respectively connected with the battery management system and a rear-mounted management system, so that the battery management system and the rear-mounted equalization system are connected to the battery box through the original wire harness, and then a power line is connected from a power supply to the rear-mounted equalization system to supply power to the rear-mounted equalization system.
In the prior art, a power supply directly supplies power to a rear-mounted equalization system, so that the rear-mounted equalization system and an original vehicle battery management system are powered on and work at the same time, and are closed at the same time, the rear-mounted equalization system is a power circuit, when a power battery in a battery box is equalized, an equalization current can pass through an original wiring harness, the original wiring harness is not an ideal conductor and has certain wiring harness impedance, when the equalization current passes through the wiring harness, a voltage drop can be generated on the wiring harness, the original vehicle battery management system and the rear-mounted equalization system share the original wiring harness and can also share loop impedance, and the generated voltage drop causes interference on the original vehicle battery management system, so that the original vehicle battery management system cannot acquire accurate voltage data, and normal work of an electric vehicle is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a power supply logic circuit of a rear-mounted equalization system, which realizes time-sharing power-on operation of the rear-mounted equalization system and a battery management system without mutual interference.
In order to achieve the above object, the present invention provides a power supply logic circuit for a rear-loading balancing system, which is applied to a battery box of an electric vehicle, wherein the battery box is connected with a battery management system and the rear-loading balancing system, the battery management system is connected with a power supply, and the power supply logic circuit is respectively connected with the rear-loading balancing system and the battery management system; the power supply logic circuit stores the power supply electric energy of the power supply and controls whether to supply power to the afterloading balance system or not by detecting the voltage signal of the battery management system.
Preferably, the device comprises a power supply detection circuit, an energy storage device, a driving circuit and a control switch; one end of the power supply detection circuit is connected with the battery management system, and the other end of the power supply detection circuit is connected with the driving circuit and feeds forward a switching signal to the driving circuit; the energy storage device is connected with the power supply detection circuit in parallel and used for storing electric energy of the power supply and supplying power to the afterloading balancing system through the control switch; the driving circuit is connected with the control switch and drives the control switch to be switched on and off through a feedforward switching signal; one end of the control switch is connected with the energy storage device, the other end of the control switch is connected with the afterloading balancing system, and when the control switch is in a closed state, the control switch supplies electric energy in the energy storage device to the afterloading balancing system.
Preferably, the power detection circuit comprises a voltage division element and a detection switch, one end of the voltage division element is connected with the power supply input end of the battery management system, the other end of the voltage division element is connected with the detection switch, and the detection switch is one of a triode, an NMOS tube, an operational amplifier or a comparator.
Preferably, the voltage dividing element includes a first resistor and a second resistor connected in series, and a third resistor and a fourth resistor connected in series, and the detection switch is a first triode; the base electrode of the first triode is connected with the common wiring terminal of the first resistor and the second resistor, the collector electrode of the first triode is connected with the common wiring terminal of the third resistor and the fourth resistor, and the emitting electrode of the first triode is grounded; the control switch is a PMOS (P-channel metal oxide semiconductor) tube, the source electrode of the PMOS tube is connected with the anode of the output end of the energy storage device, and the drain electrode of the PMOS tube is connected with the anode of the input end of the afterloading balancing system; the driving circuit comprises a fifth resistor, a sixth resistor and a second triode, wherein the base electrode of the second triode is connected with the collector electrode of the first triode and a third resistor and a fourth resistor which are connected in series, the collector electrode of the second triode is connected with the grid electrode of the PMOS tube through the sixth resistor, and the emitter electrode of the second triode is grounded; one end of the fifth resistor is connected with the sixth resistor and the common wiring terminal of the grid electrode of the PMOS tube, and the other end of the fifth resistor is connected with the source electrode of the PMOS tube.
Preferably, the voltage dividing element comprises a first resistor and a second resistor which are connected in series, the detection switch is a first triode, a base of the first triode is connected with a common terminal of the first resistor and the second resistor, and an emitter is grounded; the control switch is an NMOS tube, the source electrode of the NMOS tube is connected with the negative electrode of the output end of the energy storage device, and the drain electrode of the NMOS tube is connected with the negative electrode of the input end of the afterloading balancing system; the driving circuit comprises a fifth resistor and a sixth resistor, one end of the sixth resistor is connected with the grid electrode of the NMOS tube, and the other end of the sixth resistor is connected with the positive electrode of the output end of the energy storage device; the collector electrode of the first triode is connected with the sixth resistor and the common wiring terminal of the grid electrode of the NMOS tube; one end of the fifth resistor is connected with the collector of the first triode, and the other end of the fifth resistor is grounded.
Preferably, the battery management system further comprises a one-way conduction device, the input end of the one-way conduction device is connected with the power supply input end of the battery management system, and the output end of the one-way conduction device is connected with the input end of the energy storage device.
Preferably, the unidirectional conduction device is a diode, the anode of the diode is connected with the power supply input end of the battery management system, and the cathode of the diode is connected with the input end of the energy storage device.
Preferably, the energy storage device is an energy storage capacitor or a storage battery, one end of the energy storage capacitor or the storage battery is connected with the cathode of the diode, and the other end of the energy storage capacitor or the storage battery is grounded.
Preferably, the battery management system and the aftermarket equalizing system are connected to the battery box through a transit module, the transit module includes a transit harness and a first harness, one end of the first harness is connected to the battery box, the transit harness has three terminals, the first terminal is connected to the other end of the first harness, the second terminal is connected to the battery management system, and the third terminal is connected to the aftermarket equalizing system.
Preferably, the battery management system and the afterloading balancing system are connected to the battery box through a switching module, the switching module is a PCB switching board and a first harness, one end of the first harness is connected to the battery box, the PCB switching board has three interfaces, namely a first interface, a second interface and a third interface, the first interface is connected to the other end of the first harness, the second interface is connected to the battery management system, and the third interface is connected to the afterloading balancing system.
Compared with the prior art, the technical scheme of the utility model has the following advantages: the power supply logic circuit stores the electric quantity when the battery management system is powered on, and the electric quantity is provided for the rear-loading balancing system when the battery management system is powered off, so that the time-sharing power-on of the battery management system and the rear-loading balancing system is realized. The utility model can avoid mutual interference when the post-mounted equalizing system and the battery management system share the wiring harness to be connected with the battery box, and does not influence the correctness of the battery management system for collecting the battery data.
Drawings
FIG. 1 is a schematic diagram of a rear loading equalization system of the present invention implemented on an electric vehicle;
FIG. 2 is a schematic diagram of a power supply logic circuit of the present invention;
FIG. 3 is a circuit diagram of a first embodiment of the power supply logic circuit of the present invention;
fig. 4 is a circuit diagram of a second embodiment of the power supply logic circuit of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to only these embodiments. The utility model is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the utility model.
In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details.
The utility model is more particularly described in the following paragraphs with reference to the accompanying drawings by way of example. It should be noted that the drawings are in simplified form and are not to precise scale, which is only used for convenience and clarity to assist in describing the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of an after-loading balancing system of the present invention applied to an electric vehicle, an after-loading balancing system 6 is connected to a battery box 1, the battery box 1 is configured with a battery management system 2 and a power supply switch 3, one end of the power supply switch 3 is connected to a power supply 4, the other end is connected to the battery management system 2, and the battery management system 2 and the after-loading balancing system 6 are commonly connected to the battery box 1 through a switching module 7. According to the utility model, the input end of a power supply logic circuit 5 of a rear-mounted equalizing system 6 is connected with the output end of a power supply switch 3, the output end of the power supply logic circuit 5 is connected with the rear-mounted equalizing system 6, as shown in fig. 1, Vin is the voltage output by a power supply 4, and Vo is the voltage output by the power supply logic circuit 5. When the power supply switch 3 is closed, the circuit is switched on, the power supply 4 supplies power to the battery management system 2 and the power supply logic circuit 5, Vin is powered on, the battery management system 2 starts to work, and the power supply logic circuit 5 stores the power supply electric energy of the power supply 4.
Referring to fig. 2, it is a schematic diagram of a power supply logic circuit 5 of the afterloading equalization system of the present invention, which includes a power detection circuit 51, an energy storage device 52, a driving circuit 53 and a control switch 54; the input end of the power supply detection circuit 51 is connected with the output end of the power supply switch 3, and the output end of the power supply detection circuit 51 is connected with the input end of the driving circuit 53; the energy storage device 52 is connected in parallel with the power supply detection circuit 51; the output end of the driving circuit 53 is connected with the control switch 54; one end of the control switch 54 is connected to the energy storage device 52, and the other end is connected to the afterloader equalization system 6. When the battery management system 2 needs to be powered on to work, the power supply switch 3 is closed, the power supply logic circuit 5 is powered on along with the battery management system 2, the power supply detection circuit 51 detects that Vin is powered on, a power-on signal is fed forward to the driving circuit 53, the driving circuit 53 outputs a driving signal to enable the control switch 54 to be switched off, and electric energy on the power supply logic circuit 5 can be stored in the energy storage device 52; when the after-loading balancing system 6 needs to be powered on to work, the power supply switch 3 is switched off, the power supply detection circuit 51 cannot detect the power-on voltage, the Vin is judged to be in the power-off state, a power-off signal is fed forward to the driving circuit 53, the driving circuit 53 outputs a signal to drive the control switch 54 to be closed, the circuit between the energy storage device 52 and the after-loading balancing system 6 is conducted, the stored electric energy is supplied to the after-loading balancing system 6, the after-loading balancing system 6 is started, the balancing circuit connected with the battery box is switched on to start the balancing work, then the after-loading balancing system 6 directly obtains a working power supply from a power battery in the battery box 1, and the balancing work is continued. Therefore, the battery management system 2 and the afterloading equalizing system 6 can be electrified in a time-sharing mode and work respectively, and although one connecting wire harness is shared, when the afterloading equalizing system 6 does not work, the impedance of the connecting wire harness cannot generate voltage drop, and the work of the battery management system 2 cannot be interfered.
As shown in fig. 2, the power supply logic circuit 5 further includes a unidirectional conducting device 55, an input terminal of the unidirectional conducting device 55 is connected to the output terminal of the power supply switch 3, and an output terminal of the unidirectional conducting device 55 is connected to the input terminal of the energy storage device 52. The unidirectional conducting device 55 can ensure that the energy storage device 52 only supplies power to the rear-mounted balancing system 6, and the power consumption requirement when the rear-mounted balancing system 6 is started is met, so that the electric energy of the energy storage device 52 is not consumed by other loads on the automobile, and the rear-mounted balancing system 6 cannot be started.
Specifically, the power detection circuit 51 includes a voltage division element and a detection switch, one end of the voltage division element is connected to the output end of the power supply switch 3, the other end of the voltage division element is connected to the detection switch, and the detection switch is one of a triode, an NMOS tube, an operational amplifier or a comparator. Whether the controlled power source Vin is electrified or not is detected through the voltage division of the Vin voltage by the voltage division element, the switch signal is transmitted to the driving circuit 53, the detection function is realized by utilizing the threshold characteristic of the detection switch, and the operation is simple and convenient.
Specifically, the control switch 54 is an MOS transistor, a gate of the MOS transistor is connected to the driving circuit 53, a source of the MOS transistor is connected to the output end of the energy storage device 52, and a drain of the MOS transistor is connected to the input end of the afterloading equalization system 6.
Example one
Referring to fig. 3, a circuit diagram of a first embodiment of the power supply logic circuit of the present invention is shown, in the first embodiment, the control switch 54 is a PMOS transistor Q3, the voltage dividing element of the power detection circuit 51 is a first resistor R1 and a second resistor R2 connected in series, and a third resistor R3 and a fourth resistor R4 connected in series, the first resistor R1 and the second resistor R2 connected in series are connected in parallel with the third resistor R3 and the fourth resistor R4 connected in series, the detection switch is a first transistor Q1, and the driving circuit 53 includes a fifth resistor R5, a sixth resistor R6 and a second transistor Q2. As shown in fig. 3, a base of the first transistor Q1 is connected between the first resistor R1 and the second resistor R2, a collector is connected between the third resistor R3 and the fourth resistor R4, and an emitter is grounded; the base electrode of a second triode Q2 and the collector electrode of a first triode Q1 are connected between a third resistor R3 and a fourth resistor R4 which are connected in series, the collector electrode of the second triode Q2 is connected with the grid electrode of a PMOS tube Q3 through a sixth resistor R6, the emitter electrode of the second triode Q2 is grounded, one end of a fifth resistor R5 is connected with the common terminal of a sixth resistor R6 and the grid electrode of the PMOS tube Q3, and the other end of the fifth resistor R5 is connected with the source electrode of the PMOS tube.
In the first embodiment, the unidirectional conducting device 55 is a diode D1, and the energy storage device 52 is an energy storage capacitor C1, as shown in fig. 3, an anode of the diode D1 is connected to the output terminal of the power supply switch 3, a cathode of the diode D1 is connected to one end of the energy storage capacitor C1, and the other end of the energy storage capacitor C1 is grounded. The diode D1 realizes the unidirectional transmission of electric energy, when the voltage Vin is electrified, the energy storage capacitor C1 is charged through the diode D1, after the voltage Vin is powered off, the electric energy on the energy storage capacitor C1 and the discharge energy of the rear-mounted balancing system 6 on the power battery are separated by the diode D1, the power supply cannot be provided for other loads of the automobile connected to the Vin, and then the rear-mounted balancing system 6 can keep supplying power. In other embodiments, the energy storage device 52 may be a battery.
As shown in fig. 3, when the voltage Vin is powered on, the energy storage capacitor C1 is charged through the diode D1, the voltage Vs ≈ Vin across the energy storage capacitor C1, the power supply logic circuit 5 is designed such that the divided voltage of the first resistor R1 and the second resistor R2 is greater than the base threshold voltage of the first transistor Q1, the first transistor Q1 is turned on to output a low level to the second transistor Q2, the second transistor Q2 is turned off and is not turned on any more, the output high level is pulled up to the potential of Vs through the fifth resistor R5, the PMOS transistor Q3 is turned off, the output end of the power supply logic circuit 5 is disconnected from the energy storage capacitor C1, the output voltage Vo is pulled down, and the afterloading equalization system 6 stops working. After the power failure of the voltage Vin, the energy storage capacitor C1 stores enough energy, the voltage divided by the first resistor R1 and the second resistor R2 to the voltage Vin is smaller than the base threshold voltage of the first triode Q1, the first triode Q1 is turned off, the output high level is divided by the third resistor R3 and the fourth resistor R4 and is larger than the base threshold voltage of the second triode Q2, the second triode Q2 is turned on, the output low level is divided by the fifth resistor R5 and the sixth resistor R6 and is smaller than the turn-on threshold voltage of the PMOS transistor Q3, the PMOS transistor Q3 is turned on, the output end of the power supply logic circuit 5 is connected with the energy storage capacitor C1, the voltage Vo is Vs, the afterloading equalization system 6 is turned on, and then the power supply is obtained through the power battery in the battery box 1, and the power supply is maintained.
Example two
Referring to fig. 4, a circuit diagram of a power supply logic circuit according to a second embodiment of the present invention is shown, where the difference between the second embodiment and the first embodiment is: the control switch 54 is an NMOS transistor Q4, and the NMOS transistor Q4 is connected to the negative line of the power supply logic circuit 5; the voltage division element is a first resistor R1 and a second resistor R2 which are connected in series; the driving circuit 53 includes a fifth resistor and a sixth resistor. As shown in fig. 4, the gate of the NMOS transistor Q4 is connected to one end of the sixth resistor R6, the source is connected to the negative electrode of the output terminal of the energy storage capacitor C1, and the drain is connected to the negative electrode of the input terminal of the afterloading balancing system 6; the base electrode of the first triode Q1 is connected between the first resistor R1 and the second resistor R2, the collector electrode is connected with the common terminal of the sixth resistor R6 and the grid electrode of the NMOS tube Q4, and the emitter electrode is grounded; the other end of the sixth resistor is connected with the anode of the output end of the energy storage capacitor C1, one end of the fifth resistor R5 is connected with the collector of the first triode Q1, and the other end of the fifth resistor R5 is grounded. The NMOS transistor is replaced by the PMOS transistor of the control switch 54, the same function can be realized only by moving the control switch 54 from the anode to the cathode and modifying the driving logic and the reference level, the number of components can be reduced, the cost is reduced, and the circuit is simplified.
Specifically, as shown in fig. 1, the patching module 7 includes a patching harness 72 and a first harness 71, the first harness 71 is connected to the battery box 1 at one end, the patching harness 72 has three terminals, wherein a first terminal J0 is connected to the first harness 71, a second terminal J1 is connected to the battery management system 2, and a third terminal J2 is connected to the afterloading balancing system 6. The first wire harness 71 is an original connection wire harness used when the battery management system 2 is connected with the battery box 1 at the beginning of design and production of the electric automobile, and when the rear-mounted equalizing system 6 is added, the additionally manufactured switching wire harness 72 adopts a connector adaptive to the first wire harness 71, so that the first wire harness 71 can be directly and quickly connected, the first wire harness 71 does not need to be detached from the battery box 1, damage to the battery box 1 is avoided, and the installation efficiency is also improved.
Specifically, in other embodiments, the adaptor module 7 is a PCB (printed circuit board) and a first harness 71, one end of the first harness 71 is connected to the battery box 1, the PCB has three interfaces, namely a first interface, a second interface and a third interface, the first interface is connected to the other end of the first harness 71, the second interface is connected to the battery management system 2, and the third interface is connected to the afterloading balancing system 6. The PCB adapter plate is in a three-way form like the adapter wiring harness 72, connectors matched with the first wiring harness 71, the battery management system 2 and the rear-mounted equalizing system 6 are arranged on the PCB respectively, rapid installation can be achieved, and the size of the PCB is small, so that the space during installation can be reduced.
Although the embodiments have been described and illustrated separately, it will be apparent to those skilled in the art that some common techniques may be substituted and integrated between the embodiments, and reference may be made to one of the embodiments not explicitly described, or to another embodiment described.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (10)
1. A power supply logic circuit of a rear-mounted equalizing system is applied to a battery box (1) of an electric automobile, the battery box (1) is connected with a battery management system (2) and the rear-mounted equalizing system (6), the battery management system (2) is connected with a power supply (4), and the rear-mounted equalizing system is characterized in that,
the power supply logic circuit (5) is respectively connected with the afterloading balancing system (6) and the battery management system (2); the power supply logic circuit (5) stores the power supply energy of the power supply (4), and controls whether to supply power to a rear-mounted equalizing system (6) or not by detecting the voltage signal of the battery management system (2).
2. The power supply logic circuit of the aftermarket equalizing system according to claim 1, characterized by comprising a power supply detection circuit (51), an energy storage device (52), a drive circuit (53) and a control switch (54); one end of the power supply detection circuit (51) is connected with the battery management system (2), the other end of the power supply detection circuit is connected with the driving circuit (53), and a switching signal is fed forward to the driving circuit (53);
the energy storage device (52) is connected with the power supply detection circuit (51) in parallel and is used for storing the electric energy of the power supply (4) and supplying power to the afterloading equalization system (6) through the control switch (54);
the driving circuit (53) is connected with the control switch (54), and the control switch (54) is driven to be opened and closed through a feedforward switching signal;
one end of the control switch (54) is connected with the energy storage device (52), the other end of the control switch is connected with the afterloading equalizing system (6), and when the control switch (54) is in a closed state, the control switch supplies electric energy in the energy storage device (52) to the afterloading equalizing system (6).
3. The power supply logic circuit of an aftermarket equalizing system according to claim 2,
the power supply detection circuit (51) comprises a voltage division element and a detection switch, one end of the voltage division element is connected with the power supply input end of the battery management system (2), the other end of the voltage division element is connected with the detection switch, and the detection switch is one of a triode, an NMOS (N-channel metal oxide semiconductor) tube, an operational amplifier or a comparator.
4. The power supply logic circuit of an afterloader equalization system of claim 3,
the voltage division element comprises a first resistor, a second resistor, a third resistor and a fourth resistor which are connected in series, and the detection switch is a first triode; the base electrode of the first triode is connected with the common wiring terminal of the first resistor and the second resistor, the collector electrode of the first triode is connected with the common wiring terminal of the third resistor and the fourth resistor, and the emitting electrode of the first triode is grounded;
the control switch (54) is a PMOS (P-channel metal oxide semiconductor) tube, the source electrode of the PMOS tube is connected with the anode of the output end of the energy storage device (52), and the drain electrode of the PMOS tube is connected with the anode of the input end of the afterloading equalizing system (6);
the driving circuit (53) comprises a fifth resistor, a sixth resistor and a second triode, the base electrode of the second triode is connected with the collector electrode of the first triode and a third resistor and a fourth resistor which are connected in series, the collector electrode of the second triode is connected with the grid electrode of the PMOS tube through the sixth resistor, and the emitter electrode of the second triode is grounded; one end of the fifth resistor is connected with the sixth resistor and the common wiring end of the grid electrode of the PMOS tube, and the other end of the fifth resistor is connected with the source electrode of the PMOS tube.
5. The power supply logic circuit of an afterloader equalization system of claim 3,
the voltage division element comprises a first resistor and a second resistor which are connected in series, the detection switch is a first triode, the base electrode of the first triode is connected with the common wiring terminal of the first resistor and the second resistor, and the emitting electrode of the first triode is grounded;
the control switch (54) is an NMOS tube, the source electrode of the NMOS tube is connected with the negative electrode of the output end of the energy storage device (52), and the drain electrode of the NMOS tube is connected with the negative electrode of the input end of the afterloading balancing system (6);
the driving circuit (53) comprises a fifth resistor and a sixth resistor, one end of the sixth resistor is connected with the grid electrode of the NMOS tube, and the other end of the sixth resistor is connected with the positive electrode of the output end of the energy storage device (52); the collector of the first triode is connected with the sixth resistor and the common wiring terminal of the grid electrode of the NMOS transistor; one end of the fifth resistor is connected with the collector of the first triode, and the other end of the fifth resistor is grounded.
6. The power supply logic circuit of an aftermarket equalizing system according to claim 2,
the battery management system further comprises a one-way conduction device (55), the input end of the one-way conduction device (55) is connected with the power supply input end of the battery management system (2), and the output end of the one-way conduction device (55) is connected with the input end of the energy storage device (52).
7. The power supply logic circuit of an afterloader equalization system of claim 6,
the unidirectional conduction device (55) is a diode, the anode of the diode is connected with the power supply input end of the battery management system (2), and the cathode of the diode is connected with the input end of the energy storage device (52).
8. The power supply logic circuit of an afterloader equalization system of claim 7,
the energy storage device (52) is an energy storage capacitor or a storage battery, one end of the energy storage capacitor or the storage battery is connected with the cathode of the diode, and the other end of the energy storage capacitor or the storage battery is grounded.
9. The power supply logic circuit of an aftermarket equalizing system according to any one of claims 1 to 8,
the battery management system (2) and the aftermarket equalization system (6) are connected to the battery box (1) through a switching module (7), the switching module (7) comprises a switching wiring harness (72) and a first wiring harness (71), one end of the first wiring harness (71) is connected with the battery box (1), the switching wiring harness (72) is provided with three terminals, the first terminal is connected with the other end of the first wiring harness (71), the second terminal is connected with the battery management system (2), and the third terminal is connected with the aftermarket equalization system (6).
10. The power supply logic circuit of an afterloading equalization system according to any of claims 1-8,
the battery management system (2) and the afterloading balancing system (6) are connected to the battery box (1) through a switching module (7), the switching module (7) is a PCB (printed circuit board) switching board and a first wiring harness (71), one end of the first wiring harness (71) is connected with the battery box (1), the PCB switching board is provided with three interfaces, the first interface is connected with the other end of the first wiring harness (71), the second interface is connected with the battery management system (2), and the third interface is connected with the afterloading balancing system (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123258082.4U CN216671737U (en) | 2021-12-22 | 2021-12-22 | Power supply logic circuit of afterloading equalizing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123258082.4U CN216671737U (en) | 2021-12-22 | 2021-12-22 | Power supply logic circuit of afterloading equalizing system |
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