CN118100352A - Storage battery voltage stabilizing device and vehicle - Google Patents

Storage battery voltage stabilizing device and vehicle Download PDF

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Publication number
CN118100352A
CN118100352A CN202410081485.5A CN202410081485A CN118100352A CN 118100352 A CN118100352 A CN 118100352A CN 202410081485 A CN202410081485 A CN 202410081485A CN 118100352 A CN118100352 A CN 118100352A
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CN
China
Prior art keywords
voltage
voltage signal
storage battery
battery
energy storage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410081485.5A
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Chinese (zh)
Inventor
钟华
刘志强
王斯博
赵慧超
王宇
文彦东
于继成
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FAW Group Corp
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FAW Group Corp
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Filing date
Publication date
Application filed by FAW Group Corp filed Critical FAW Group Corp
Priority to CN202410081485.5A priority Critical patent/CN118100352A/en
Publication of CN118100352A publication Critical patent/CN118100352A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00308—Overvoltage protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application relates to a battery voltage stabilizing device and a vehicle, wherein the device comprises: the first end of the first voltage stabilizing module is connected with the storage battery and is used for receiving a first voltage signal output by the storage battery to store electric energy when the storage battery is in a normal working state or an overvoltage working state and outputting a compensation signal to compensate the first voltage signal to form a second voltage signal when the storage battery is in an undervoltage working state; the first end of the second voltage stabilizing module is connected with the second end of the first voltage stabilizing module, the second end of the second voltage stabilizing module is connected with a load, and the second voltage stabilizing module is used for carrying out voltage conversion processing on the second voltage signal under the condition that the storage battery is in an abnormal working state and outputting a target voltage signal to the load. The device can ensure the normal work of the load.

Description

Storage battery voltage stabilizing device and vehicle
Technical Field
The application relates to the technical field of storage batteries, in particular to a storage battery voltage stabilizing device and a vehicle.
Background
The low-voltage electrical load of the new energy vehicle is powered by a storage battery in the vehicle, and in the running process of the vehicle, the operating conditions of starting, switching of DCDC working modes, load change of electric equipment and the like can cause voltage dip and overvoltage of different degrees of output voltage of the storage battery.
The output voltage of the storage battery is over-voltage and under-voltage, which can influence the normal operation of the low-voltage electrical load.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a battery voltage stabilizing device and a vehicle that can ensure normal operation of a load.
In a first aspect, the present application provides a battery voltage stabilizing apparatus, the apparatus comprising:
the first end of the first voltage stabilizing module is connected with the storage battery and is used for receiving a first voltage signal output by the storage battery to store electric energy when the storage battery is in a normal working state or an overvoltage working state and outputting a compensation signal to compensate the first voltage signal to form a second voltage signal when the storage battery is in an undervoltage working state;
The first end of the second voltage stabilizing module is connected with the second end of the first voltage stabilizing module, the second end of the second voltage stabilizing module is connected with a load, and the second voltage stabilizing module is used for carrying out voltage conversion processing on the second voltage signal under the condition that the storage battery is in an abnormal working state and outputting a target voltage signal to the load.
In one embodiment, the first voltage stabilizing module includes:
the first end of the filtering unit is connected with the storage battery and is used for receiving the first voltage signal and filtering the first voltage signal;
The anti-reflection unit is used for preventing the electric signal at the second end of the anti-reflection unit from being output to the first end of the anti-reflection unit under the condition that the storage battery is in an under-voltage working state;
The first end of the supporting unit is connected with the second end of the anti-reflection unit, and is used for receiving a first electric signal output by the storage battery to store electric energy when the storage battery is in a normal working state or an overvoltage working state, and outputting a compensation signal to compensate the first voltage signal to form a second voltage signal when the storage battery is in an undervoltage working state.
In one embodiment, the support unit includes:
The first end of the supporting capacitor is connected with the second end of the anti-reflection unit, and the second end of the supporting capacitor is grounded and is used for receiving a first voltage signal output by the storage battery under the condition that the storage battery is in a normal working state or an overvoltage working state so as to store electric energy, and outputting a compensation signal under the condition that the storage battery is in an undervoltage working state so as to compensate the first voltage signal to form a second voltage signal.
In one embodiment, the filtering unit includes:
The first end of the first filtering subunit is connected with the storage battery and is used for receiving the first voltage signal and performing primary filtering processing on the first voltage signal;
The first end of the second filtering subunit is connected with the second end of the first filtering subunit, and the second end of the second filtering subunit is connected with the anti-reflection unit and is used for performing secondary filtering processing on the first voltage signal subjected to primary filtering processing.
In one embodiment, the first filtering subunit includes:
The first end of the first filter capacitor is connected with the positive electrode of the storage battery, and the second end of the first filter capacitor is connected with the negative electrode of the storage battery;
The first end of the first filter inductor is respectively connected with the first end of the first filter capacitor and the anode of the storage battery;
the first end of the second filter capacitor is connected with the second end of the first filter inductor, and the second end of the second filter capacitor is grounded;
the first end of the second filter inductor is respectively connected with the second end of the first filter capacitor and the negative electrode of the storage battery;
the first end of the third filter capacitor is connected with the second end of the second filter inductor, and the second end of the third filter capacitor is grounded;
the second filtering subunit includes:
The first end of the fourth filter capacitor is respectively connected with the first end of the second filter capacitor and the second end of the first filter inductor, and the second end of the fourth filter capacitor is respectively connected with the first end of the third filter capacitor and the second end of the second filter inductor;
The first end of the third filter inductor is respectively connected with the first end of the fourth filter capacitor, the first end of the second filter capacitor and the second end of the first filter inductor;
A first end of the fifth filter capacitor is connected with a second end of the third filter inductor, and a second end of the fifth filter capacitor is grounded;
the first end of the fourth filter inductor is respectively connected with the second end of the fourth filter capacitor, the first end of the third filter capacitor and the second end of the second filter inductor;
and the first end of the sixth filter capacitor is connected with the second end of the fourth filter inductor, and the second end of the sixth filter capacitor is grounded.
In one embodiment, the anti-reflection unit includes:
The first end of the first diode is connected with the second end of the filtering unit, and the second end of the first diode is connected with the first end of the supporting unit and used for preventing the supporting unit from outputting a second voltage signal to the storage battery under the condition that the storage battery is in an under-voltage state.
In one embodiment, the second voltage stabilizing module includes:
The first interface of the control unit is connected with the second end of the first voltage stabilizing module and is used for receiving the second voltage signal output by the first voltage stabilizing module and outputting a control signal according to the second voltage signal;
The first end of the energy storage unit is connected with the second end of the first voltage stabilizing module, and the second end of the energy storage unit is connected with the load;
The first end of the main control switch is connected with the third end of the energy storage unit, the control end of the main control switch is connected with the second interface of the control unit, and the main control switch is used for responding to the on-off of the control signal and adjusting the duty ratio of the main control switch so that the energy storage unit outputs the target voltage signal.
In one embodiment, the energy storage unit includes:
The first end of the first energy storage inductor is connected with the second end of the first voltage stabilizing module, and is used for receiving the second voltage signal to store electric energy when the main control switch is in a conducting state and supplying power to the load when the main control switch is in an off state;
the first end of the first energy storage capacitor is connected with the second end of the first energy storage inductor;
The first end of the second energy storage inductor is connected with the second end of the first energy storage capacitor, and the second end of the second energy storage inductor is grounded and used for storing electric energy in the first energy storage capacitor when the main control switch is in a conducting state and supplying power to the load when the main control switch is in an off state;
The first end of the second diode is connected with the first end of the second energy storage inductor and the second end of the first energy storage capacitor respectively, and the second end of the second diode is connected with the load and is used for conducting the first end to the second end of the second diode in a unidirectional way under the condition that the main control switch is in an off state so that the first energy storage inductor and the second energy storage inductor supply power for the load;
The first end of the second energy storage capacitor is connected with the second end of the second diode and the load respectively, and the second end of the second energy storage capacitor is grounded and used for supplying power to the load when the main control switch is in a conducting state and storing electric energy output by the second energy storage inductor when the main control switch is in an off state.
In one embodiment, the master switch includes:
and the grid electrode of the switching transistor is connected with the second interface of the control chip, the first electrode of the switching transistor is connected with the third end of the energy storage unit, and the second electrode of the switching transistor is grounded.
In one embodiment, the second end of the energy storage unit is further connected to a third interface of the control chip, and the control chip is further configured to adjust the control signal according to the target voltage signal, so as to adjust the duty ratio of the master control switch.
In a second aspect, the present application provides a vehicle comprising a battery, a load, and a battery voltage regulator according to any one of the embodiments described above.
The storage battery voltage stabilizing device and the vehicle comprise the first voltage stabilizing module and the second voltage stabilizing module, wherein the first end of the first voltage stabilizing module is connected with the storage battery, can receive a first voltage signal output by the storage battery, and stores electric energy in the first voltage signal when the storage battery is in a normal working state or an overvoltage working state, so that when the storage battery is in an undervoltage working state, a compensation signal is output, the stored electric energy is released to compensate the first voltage signal to form a second voltage signal, the first end of the second voltage stabilizing module is connected with the second end of the first voltage stabilizing module, receives the second voltage signal output by the first voltage stabilizing module, and performs voltage conversion on the second voltage signal when the storage battery is in an abnormal working state, and converts the second voltage signal into a target voltage signal for normally driving a load to work. The storage battery voltage stabilizing device can ensure that the storage battery can still output a target voltage signal to a load even in an overvoltage working state or an undervoltage working state, and ensure the normal operation of the load.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of a battery voltage regulator in one embodiment;
FIG. 2 is a schematic diagram of a battery voltage regulator in another embodiment;
FIG. 3 is a schematic view of a battery voltage regulator in yet another embodiment;
FIG. 4 is a schematic diagram of a battery voltage regulator in yet another embodiment;
FIG. 5 is a schematic view of a battery voltage regulator in yet another embodiment;
FIG. 6 is a schematic diagram of a battery voltage regulator in yet another embodiment;
FIG. 7 is a target operating condition information diagram in one embodiment;
FIG. 8 is a schematic diagram of a battery voltage regulator in yet another embodiment;
fig. 9 is a schematic structural view of a battery voltage stabilizing device according to another embodiment;
FIG. 10 is a schematic diagram of SEPIC circuitry in one embodiment;
FIG. 11 is a schematic diagram of a SEPIC circuit with switch S1 turned on in one embodiment;
fig. 12 is a schematic diagram of the SEPIC circuit when the switch S1 is turned off in one embodiment;
FIG. 13 is a schematic view of a battery voltage regulator apparatus according to yet another embodiment;
Reference numerals illustrate: the device comprises a first voltage stabilizing module, a 11-filtering unit, a 111-first filtering subunit, a 112-second filtering subunit, a 12-anti-reflection unit, a 13-supporting unit, a 14-overvoltage absorbing unit, a 2-second voltage stabilizing module, a 21-control unit, a 22-energy storage unit, a 23-main control switch, a 3-storage battery and a 4-load.
Detailed Description
In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the application. Both the first resistor and the second resistor are resistors, but they are not the same resistor.
It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.
It is understood that "at least one" means one or more and "a plurality" means two or more. "at least part of an element" means part or all of the element.
As used herein, the singular forms "a", "an" 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," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
In the running process of the vehicle, a voltage signal can be output to each load to drive the load to work when the storage battery is in operation, and different vehicle working conditions such as starting, DCDC working mode switching, load change of electric equipment and the like can cause voltage output by the storage battery to generate voltage dip, slow dip, overvoltage and the like of different degrees, the load chip can be damaged by severe overshoot voltage and current, and when the load chip receives unsuitable power supply voltage, the functional performance of the load can be influenced.
For the above reasons, in one embodiment, as shown in fig. 1, the present application provides a battery voltage stabilizing apparatus including a first voltage stabilizing module 1 and a second voltage stabilizing module 2.
The first end of the first voltage stabilizing module 1 is connected with the storage battery 3, and is used for receiving a first voltage signal output by the storage battery 3 to store electric energy when the storage battery 3 is in a normal working state or an overvoltage working state, and outputting a compensation signal to compensate the first voltage signal to form a second voltage signal when the storage battery 3 is in an undervoltage working state.
In application, when the battery 3 is operating normally, the first voltage signal output by the battery 3 may fluctuate between a normal voltage interval, i.e. between 6V and 16V; when the battery is in an overvoltage operation state, the first voltage signal output by the battery 3 may fluctuate within an overvoltage interval, i.e., 16V to 27V; when the battery is in an under-voltage operation state, the first voltage signal output from the battery 3 may fluctuate within an under-voltage interval, i.e., 0V to 6V. The first voltage stabilizing module 1 may receive a first voltage signal output from the battery 3, and store electric energy when the battery 3 is in a normal operation state or an overvoltage operation state, to release the stored electric energy when the battery 3 is in an undervoltage operation state, and output a compensation signal to compensate the first voltage signal so as to form a second voltage signal capable of normally supplying power to the load 4.
For example, the first voltage stabilizing module 1 may store 10uF of the electric charge in advance, and when the first voltage signal output by the storage battery 3 is slightly lower than the minimum supply voltage required by the load 4, the first voltage stabilizing module 1 may release the electric charge stored in advance to compensate the first voltage signal, so as to form a second voltage signal capable of meeting the normal operation of the load 4.
The first end of the second voltage stabilizing module 2 is connected with the second end of the first voltage stabilizing module 1, the second end of the second voltage stabilizing module 2 is connected with the load 4, and the second voltage stabilizing module is used for performing voltage conversion processing on the second voltage signal and outputting a target voltage signal to the load 4 under the condition that the storage battery 3 is in an abnormal working state. The abnormal operating condition includes one of an overvoltage operating condition and an undervoltage operating condition.
In this embodiment, when the difference between the first voltage signal output by the battery 3 and the power supply voltage range required by the load 4 is too large, that is, the first voltage signal output by the battery 3 is far smaller than the minimum power supply voltage required by the load 4 (under-voltage operating state), or the first voltage signal output by the battery 3 is far higher than the maximum power supply voltage that can be borne by the load 4 (over-voltage operating state), the electric energy released or absorbed by the first voltage stabilizing module 1 cannot enable the second voltage signal to meet the requirement of the load 4. At this time, the second voltage stabilizing module 2 may perform voltage conversion on the second voltage signal, and output a target voltage signal, where the target voltage signal is located in a power supply voltage range required by the load 4.
The storage battery voltage stabilizing device comprises a first voltage stabilizing module and a second voltage stabilizing module, wherein the first end of the first voltage stabilizing module is connected with the storage battery, can receive a first voltage signal output by the storage battery, stores electric energy in the first voltage signal when the storage battery is in a normal working state or an overvoltage working state, so that when the storage battery is in an undervoltage working state, a compensation signal is output, the stored electric energy is released to compensate the first voltage signal to form a second voltage signal, the first end of the second voltage stabilizing module is connected with the second end of the first voltage stabilizing module, receives the second voltage signal output by the first voltage stabilizing module, and performs voltage conversion on the second voltage signal when the storage battery is in an abnormal working state, and converts the second voltage signal into a target voltage signal for normally driving a load to work. The storage battery voltage stabilizing device can ensure that the storage battery can still output a target voltage signal to a load even in an overvoltage working state or an undervoltage working state, and ensure the normal operation of the load.
In one embodiment, as shown in fig. 2, the first voltage stabilizing module 1 includes a filtering unit 11, an anti-reflection unit 12, and a supporting unit 13.
The first end of the filtering unit 11 is connected to the battery 3, and is configured to receive the first voltage signal and perform filtering processing on the first voltage signal.
It will be appreciated that after the battery 3 outputs the first voltage signal, the first voltage signal is first filtered by the filtering unit 11 to filter some interference signals in the first voltage signal.
The first end of the anti-reflection unit 12 is connected with the second end of the filtering unit 11, and the anti-reflection unit 12 is used for preventing the electric signal at the second end of the anti-reflection unit 12 from being output to the first end of the anti-reflection unit 12 when the storage battery 3 is in an under-voltage working state.
In application, since some charges are stored in the supporting unit 13 and some electric energy is also stored in the rear load 4, when the storage battery 3 is in an under-voltage working state, the electric potential of the output end of the storage battery 3 may be lower than that of the supporting unit 13 or the load 4, so that the supporting unit 13 or the load 4 charges the storage battery 3, in order to avoid the phenomenon, an anti-reflection unit 12 is arranged between the filtering unit 11 and the supporting unit 13, and the first end to the second end of the anti-reflection unit 12 are in unidirectional conduction, so as to avoid the supporting unit 13 or the load 4 from charging the storage battery 3.
The first end of the supporting unit 13 is connected to the second end of the anti-reflection unit 12, and is configured to receive a first electrical signal output by the storage battery 3 to store electrical energy when the storage battery 3 is in a normal operating state or an overvoltage operating state, and output a compensation signal to compensate the first voltage signal to form a second voltage signal when the storage battery 3 is in an undervoltage operating state.
When the supporting unit 13 receives the first voltage signal after the filtering processing of the filtering unit 11, the supporting unit can receive the first voltage signal according to the current working state of the storage battery 3 to store electric energy or release electric energy, and output a compensation signal to the first voltage signal so as to play a role in peak clipping and valley filling of the first voltage signal. When the first voltage signal is slightly lower than the minimum power supply voltage required by the load 4, the first voltage stabilizing module 1 can release the charge stored in advance to compensate the first voltage signal, so as to form a second voltage signal capable of meeting the normal operation of the load 4, so that the load 4 can normally operate, and the voltage value of the second voltage signal is higher than that of the first voltage signal.
In one embodiment, as shown in fig. 3, the filtering unit 11 includes a first filtering subunit 111 and a second filtering subunit 112.
The first end of the first filtering subunit 111 is connected to the battery 3, and is configured to receive the first voltage signal, and perform primary filtering processing on the first voltage signal. The first end of the second filtering subunit 112 is connected to the second end of the first filtering subunit 111, and the second end of the second filtering subunit 112 is connected to the anti-reflection unit 12, so as to perform the secondary filtering process on the first voltage signal subjected to the primary filtering process.
In application, the filtering unit 11 may include two stages of filtering subunits, namely a first filtering subunit 111 and a second filtering subunit 112, after the first voltage signal is output by the battery 3, the first filtering subunit 111 performs primary filtering processing on the first voltage signal, then inputs the first voltage signal subjected to the primary filtering processing into the second filtering subunit 112 for secondary filtering processing, and through the two stages of filtering processing, it can be ensured that the interference in the first voltage signal is eliminated more thoroughly.
In one embodiment, as shown in fig. 4, the first filtering subunit 111 includes: the filter comprises a first filter capacitor C1, a first filter inductor L1, a second filter capacitor C2, a second filter inductor L2 and a third filter capacitor C3. The second filtering subunit 112 includes: a fourth filter capacitor C4, a third filter inductor L3, a fifth filter capacitor C5, a fourth filter inductor L4 and a sixth filter capacitor C6.
The first end of the first filter capacitor C1 is connected to the positive electrode of the battery 3, and the second end of the first filter capacitor C1 is connected to the negative electrode of the battery 3. The first end of the first filter inductance L1 is connected to the first end of the first filter capacitance C1 and the positive electrode of the battery 3, respectively. The first end of the second filter capacitor C2 is connected with the second end of the first filter inductor L1, and the second end of the second filter capacitor C2 is grounded. The first end of the second filter inductor L2 is connected to the second end of the first filter capacitor C1 and the negative electrode of the battery 3, respectively. The first end of the third filter capacitor C3 is connected with the second end of the second filter inductor L2, and the second end of the third filter capacitor C3 is grounded.
The first end of the fourth filter capacitor C4 is respectively connected with the first end of the second filter capacitor C2 and the second end of the first filter inductor L1, and the second end of the fourth filter capacitor C4 is respectively connected with the first end of the third filter capacitor C3 and the second end of the second filter inductor L2. The first end of the third filter inductor L3 is connected to the first end of the fourth filter capacitor C4, the first end of the second filter capacitor C2, and the second end of the first filter inductor L1, respectively. The first end of the fifth filter capacitor C5 is connected to the second end of the third filter inductor L3, and the second end of the fifth filter capacitor C5 is grounded. The first end of the fourth filter inductor L4 is connected to the second end of the fourth filter capacitor C4, the first end of the third filter capacitor C3, and the second end of the second filter inductor L2, respectively. The first end of the sixth filter capacitor C6 is connected to the second end of the fourth filter inductor L4, and the second end of the sixth filter capacitor C6 is grounded.
It can be understood that the inductor and the capacitor have filtering functions, after the storage battery 3 outputs the first voltage signal, the first filter capacitor C1, the first filter inductor L1, the second filter capacitor C2, the second filter inductor L2 and the third filter capacitor C3 perform primary filtering processing on the first voltage signal, then the first voltage signal after the primary filtering processing is input into the second filter subunit 112, and the fourth filter capacitor C4, the third filter inductor L3, the fifth filter capacitor C5, the fourth filter inductor L4 and the sixth filter capacitor C6 perform secondary filtering processing on the first voltage signal, so that it can be ensured that the interference in the first voltage signal is eliminated more thoroughly through two-stage filtering processing.
In one embodiment, as shown in fig. 5, the anti-reflection unit 12 includes a first diode D1. The first end of the first diode D1 is connected to the second end of the filter unit 11, and the second end of the first diode D1 is connected to the first end of the support unit 13, for preventing the support unit 13 from outputting the second voltage signal to the battery in case the battery 3 is in an under-voltage state.
In application, the first end of the first diode D1 may be connected to the first end of the fifth filter capacitor C5 and the second end of the third filter inductor L3, so as to transmit the first voltage signal after the two-stage filtering process to the supporting unit 13. And because of the unidirectional conduction characteristic of the first diode D1, the electrical signal in the first voltage stabilizing module 1 can only be input from the filtering unit 11 to the supporting unit 13 through the anti-reflection unit 12, but cannot be input from the supporting unit 13 to the filtering unit 11 through the anti-reflection unit 12, that is, in the case that the storage battery 3 is in an under-voltage state, the supporting unit 13 cannot output to supply power to the storage battery 3.
In one embodiment, as shown in fig. 6, the supporting unit 13 includes a supporting capacitor C7. The first end of the supporting capacitor C7 is connected to the second end of the anti-reflection unit 12, i.e. the second end of the first diode D1, and the second end of the supporting capacitor C7 is grounded, so as to receive the first voltage signal output by the storage battery 3 when the storage battery 3 is in a normal working state or an overvoltage working state, so as to store electric energy, and output a compensation signal when the storage battery 3 is in an undervoltage working state, so as to compensate the first voltage signal to form a second voltage signal. The support capacitor C7 may be a tantalum capacitor or an electrolytic capacitor.
The application also provides a method for selecting the type of the supporting capacitor C7, which comprises the steps of firstly obtaining an initial working condition information table, wherein the initial working condition information table can be used for representing the working condition of the storage battery, the working condition of the storage battery in the working condition, the first voltage signal range of each storage battery in the working condition, the duration of the first voltage signal output by the storage battery and the functional state requirement of the load 4. The initial operating condition information table may be as shown in table 1.
TABLE 1
As shown in table 1, the working states of the battery 3 can be divided into three working states of overvoltage, normal and undervoltage, and the working conditions of the vehicle which cause the battery 3 to be in the overvoltage working state include auxiliary starting, long-time overvoltage, short-time overvoltage and the like, and the working conditions of the vehicle which cause the battery 3 to be in the undervoltage working state include long-time working, long-time transient undervoltage, short-time transient undervoltage, hot start cold start, short-time open circuit and the like. For example, when the vehicle is started in an auxiliary mode and the battery 3 is in an overvoltage operation state, the first voltage signal output by the battery 3 may fluctuate between 17V and 26V, and the duration of the first voltage signal output by the battery 3 between 17V and 26V is within 60s, the level of demand of the load 4 for the first voltage signal output by the battery 3 between 17V and 26V is level C, that is, under the auxiliary starting condition, the load 4 may receive the first voltage signal output by the battery to be overvoltage for more than 60s. For example, when the vehicle is in the under-voltage operation state due to cold start, the first voltage signal output by the battery 3 may fluctuate between 3.2V and 7V, the duration of the first voltage signal output by the battery 3 between 3.2V and 7V is 10.5s, the level of the demand of the load 4 for the first voltage signal output by the battery 3 between 3.2V and 7V within 10.5s is level a, that is, under the cold start working condition, the load 4 may not receive the first voltage signal output by the battery 3 for more than 10.5s, and at this time, it is required to ensure that the duration of the first voltage signal output by the battery 3 for the under-voltage does not exceed 10.5s, and the load 4 can work normally.
Therefore, when the voltage stabilizing operation is performed on the output voltage of the storage battery 3, only the condition of the a-level functional state requirement needs to be considered, and therefore, the initial working condition information table may be screened to obtain a candidate working condition information table, and the candidate working condition information table may be as shown in table 2.
TABLE 2
And then analyzing and summarizing the candidate working condition information table to obtain a target working condition information table, wherein the target working condition information table can be shown in a table 3.
TABLE 3 Table 3
In application, as shown in fig. 7, a target working condition information chart can be drawn according to the target working condition information table, and the model size of the supporting capacitor C7 can be determined according to the target working condition information chart. Because the first voltage stabilizing unit 1 is mainly used for carrying out the model selection of the supporting capacitor C7 mainly according to the working condition of short-time undervoltage when the first voltage signal output by the storage battery 3 is close to the power supply range required by the load, namely, when the first voltage signal output by the storage battery 3 is slightly smaller than the minimum power supply voltage required by the load 4. In application, the model size of the supporting capacitor C7 can be determined according to the formula (1).
Wherein U1 is the lowest power supply voltage required by the load 4, U2 is the minimum first voltage signal output by the storage battery 3, P is the maximum input power of the load 4 during normal operation, t is the short-time undervoltage longest duration,Is a candidate capacitance model value.
In application, considering that errors exist in the electronic materials on the storage battery voltage stabilizing device, 1.5 times of design allowance can be reserved, namely the size of C7 is 1.5 timesIs of a size of (a) and (b).
By the method for selecting the supporting capacitor C7, a capacitor model suitable for compensating the instantaneous voltage drop of the storage battery 3 or the short undervoltage time can be selected, and the phenomenon that the supporting capacitor C7 is too large to absorb excessive electric energy or the supporting capacitor C7 is too small to cause that an output compensation signal is insufficient to enable the second voltage signal to meet the power supply requirement of the load 4 is avoided.
In application, the supporting unit 13 may further include a seventh filter capacitor C8 and an eighth filter capacitor C9, where the seventh filter capacitor C8 and the eighth filter capacitor C9 are connected in parallel to the supporting capacitor C7, and first ends of the supporting capacitor C7, the seventh filter capacitor C8, and the eighth filter capacitor C9 are connected to the second end of the first diode respectively, and first ends of the supporting capacitor C7, the seventh filter capacitor C8, and the eighth filter capacitor C9 are grounded. So that the seventh filter capacitor C8 and the eighth filter capacitor C9 perform the filtering process again on the second voltage signal compensated by the support capacitor C7.
The first voltage stabilizing module 1 may further include an overvoltage absorbing unit 14, and the overvoltage absorbing unit 14 may include a transient voltage diode T1, where a first end of the transient voltage diode T1 is connected to a first end of the first diode D1, and a second end of the transient voltage diode T1 is grounded. The transient voltage diode T1 may be a transient voltage suppressor, i.e., TVS (TRANSIENT VOLTAGE SUPPRESSORS, transient voltage suppressor), which is a protection element with fast response and high power consumption. The voltage regulator can be quickly conducted when the input voltage exceeds the rated voltage, so that the voltage is stabilized below the rated voltage. TVS are commonly used for input and output terminals of electronic devices for suppressing overvoltage and electromagnetic interference. When the input voltage is too high, the TVS will start to turn on, draining the overvoltage to ground to protect the circuit.
In one embodiment, as shown in fig. 8, the second voltage stabilizing module 2 includes: a control unit 21, an energy storage unit 22 and a main control switch 23.
The first interface of the control unit 21 is connected to the second end of the first voltage stabilizing module 1, and is configured to receive the second voltage signal output by the first voltage stabilizing module 1, and output a control signal according to the second voltage signal. The first end of the energy storage unit 22 is connected to the second end of the first voltage stabilizing module 1, and the second end of the energy storage unit 22 is connected to the load 4. The first end of the main control switch 23 is connected with the third end of the energy storage unit 22, the control end of the main control switch 23 is connected with the second interface of the control unit 21, and the main control switch 23 is used for responding to the on-off of the control signal and adjusting the duty ratio of the main control switch 23 so that the energy storage unit 22 outputs a target voltage signal. The second voltage stabilizing module 2 may be a chip-based SEPIC (SINGLE ENDED PRIMARY Inductor Converter, single-ended primary inductive converter) circuit, and the control unit 21 may be a control chip. The SEPIC circuit is a DCDC (direct current-direct current converter) that allows an output voltage greater than, less than, or equal to an input voltage, with the greatest advantage of having the same polarity of input and output, allowing the output voltage to be greater than or less than the desired input voltage.
It can be understood that the first interface of the control unit 21 is connected to the second end of the supporting unit 13, and after receiving the second voltage signal, the control unit 21 can output a corresponding control signal according to the magnitude of the second voltage signal and the power supply range required by the load 4, so as to control the duty ratio of the on-off time of the main control switch 23. The first end of the energy storage unit 22 is also connected to the second end of the supporting unit 13 to receive the second voltage signal, store energy in the second voltage signal in a state that the main control switch 23 is turned on, and release the second voltage signal together with the stored electric energy to the load 4 in a state that the main control switch 23 is turned off. By controlling the duty ratio of the on-off time of the main control switch 23, the energy storage unit 22 can perform voltage conversion on the second voltage signal according to the duty ratio of the on-off time of the main control switch 23, so as to convert the second voltage signal into a target voltage signal capable of meeting the normal operation requirement of the load 4.
In one embodiment, as shown in fig. 9, the energy storage unit 22 includes: the first energy storage inductor L5, the first energy storage capacitor C10, the second energy storage inductor L6, the second diode D2 and the second energy storage capacitor C11.
The first end of the first energy storage inductor L5 is connected with the second end of the first voltage stabilizing module 1, that is, the second end of the first diode D1 and the first end of the supporting capacitor C7, respectively, and is configured to receive the second voltage signal when the main control switch 23 is in the on state, so as to store electric energy, and is configured to output the stored electric energy when the main control switch 23 is in the off state. The first end of the first energy storage capacitor C10 is connected to the second end of the first energy storage inductor L5, and is configured to store the electric energy output by the first energy storage inductor L5 when the main control switch 23 is in the off state. The first end of the second energy storage inductor L6 is connected to the second end of the first energy storage capacitor C10, and the second end of the second energy storage inductor L6 is grounded, and is used for storing electric energy in the first energy storage capacitor C10 when the main control switch 23 is in an on state, and outputting the stored electric energy when the main control switch 23 is in an off state. The first end of the second diode D2 is connected to the first end of the second energy storage inductor L6 and the second end of the first energy storage capacitor C10, respectively, and the second end of the second diode D2 is connected to the load 4, so that the first energy storage inductor L5 and the second energy storage inductor L6 output the stored electric energy to supply power to the load 4 when the main control switch 23 is in the off state. The first end of the second energy storage capacitor C11 is connected with the second end of the second diode D2 and the load 4 respectively, and the second end of the second energy storage capacitor C11 is grounded and is used for supplying power to the load 4 when the main control switch 23 is in an on state, and storing the electric energy output by the second energy storage inductor L6 when the main control switch 23 is in an off state.
The schematic diagram of the SEPIC circuit may be shown in fig. 10, where Uin is a power supply, L5 is a first energy storage inductor, C10 is a first energy storage capacitor, L6 is a second energy storage inductor, D2 is a second diode, C11 is a second energy storage capacitor, r is a load resistor, S1 is a switch, and Uout is a voltage across the load resistor r.
When the switch S1 is turned on, as shown in fig. 11, the schematic diagram of the SEPIC circuit may be that when the switch S1 is turned on, the second diode D2 is turned off due to the bias, and at this time, the power supply Uin inputs the electric energy for the first energy storage inductor L5 to enable the first energy storage inductor L5 to store the electric energy, the electric energy stored in the first energy storage capacitor C10 is released to the second energy storage inductor L6 to store the electric energy for the second energy storage inductor L6, and the electric energy stored in the second energy storage capacitor C11 is released to the load resistor r to supply the load resistor r with the electric energy.
When the switch S1 is turned off, as shown in fig. 12, the schematic diagram of the SEPIC circuit may be that the inductor current cannot be suddenly changed, so that the second diode D2 is forward biased to be turned on, and at this time, the total current of the first energy storage inductor L5 and the second energy storage inductor L6 is freewheeled through the second diode D2, the energy stored in the second energy storage inductor L6 supplies power to the load resistor r and supplements the energy lost by the second energy storage capacitor C11 in the previous time interval, and the energy stored in the first energy storage inductor L5 supplies power to the load resistor r and supplements the energy lost by the first energy storage capacitor C10 in the previous time interval. The load resistor r is supplied by the power supply E, the first energy storage inductance L5 and the second energy storage inductance L6 together during the off-period of the switch S1. The relationship between the input voltage and the output voltage of the SEPIC circuit is as follows: Wherein Uin is the power supply voltage, namely the input voltage of the SEPIC circuit, uout is the voltage at two ends of the load resistor r, namely the output voltage of the SEPIC circuit,/> For the time that switch S1 is on,/>Is the time that switch S1 is open.
In one embodiment, as shown in fig. 13, the master switch 23 includes a switching transistor M1. The gate of the switching transistor M1 is connected to the second interface of the control unit 21, the first pole of the switching transistor M1 is connected to the third terminal of the energy storage unit 22, and the second pole of the switching transistor M1 is grounded. The main control switch 23 may further include a parasitic diode D3, a first terminal of the parasitic diode D3 is connected to the first pole of the switching transistor M1, a second terminal of the parasitic diode D3 is connected to the second pole of the switching transistor M1, and the parasitic diode D3 is used to protect the switching transistor M1.
It can be understood that the main control switch 23 includes a switch transistor M1, and the control unit 21 is a control chip, and the control unit includes EN, VIN, GND, COMP, VCC, GATE, ISEN and FB eight interfaces. The capacitor C12 is a ninth filter capacitor, a first end of the ninth filter capacitor C12 is connected to a first end of the eighth filter capacitor C9, and a second end of the ninth filter capacitor C12 is grounded and is used for filtering the second voltage signal.
The EN interface is an enabling interface of the control unit and is used for driving the control unit to work under the condition that an electric signal is received, a first end of a resistor R2 is connected with a second end of the first voltage stabilizing module 1, a second end of the resistor R2 and a first end of a resistor R3 are respectively connected with the EN interface, a second end of the electronic R3 is grounded, and the resistors R2 and R3 are commonly used for dividing the signal accessed to the EN interface so as to protect the control unit; the VIN interface is a first interface in the above embodiment, and is configured to receive a second voltage signal, so that the control unit detects the magnitude of the second voltage signal and generates a corresponding control signal, a first end of the resistor R1 is connected to a first end of the ninth filter capacitor C12, a second end of the resistor R1 is connected to the tenth filter capacitor C13, and a second end of the tenth filter capacitor C13 is grounded; the GND interface is grounded; the COMP interface is a clock signal interface, the first end of the resistor R4 is connected with the COMP interface, the second end of the resistor R4 is connected with the first end of the capacitor C14, the second end of the capacitor C14 is grounded, the first end of the capacitor C15 is connected with the COMP interface, and the second end of the capacitor C15 is grounded.
The VCC interface is a power interface, a first end of the capacitor C16 is connected with the VCC interface, and a second end of the capacitor C16 is grounded. The GATE interface is a second interface in the above embodiment, and is connected to the GATE of the switching transistor M1, and is used for outputting a control signal to control the on/off of the switching transistor M1, where the first end of the resistor R5 is connected to the GATE interface, the second end of the resistor R5 is connected to the GATE of the switching transistor M1, the first end of the resistor R6 is connected to the second end of the resistor R5 and the GATE of the switching transistor M1, the second end of the resistor R6 is connected to the first end of the resistor R7, the second end of the resistor R7 is grounded, and the resistors R5, R6, and R7 are used for voltage division protection.
The ISEN interface is connected to the second pole of the switching transistor M1, and the second pole of the switching transistor M1 may be a source for receiving the current flowing through the switching transistor M1, so that the control unit detects whether the switching transistor M1 has a fault according to the current flowing through the switching transistor M1, and controls the GATE interface to output a control signal for controlling the switching transistor M1 to be turned off in case that the switching transistor M1 has a fault. The second pole of the switching transistor M1 is also connected to the first terminal of the resistor R8 and the second terminal of the resistor R8 is grounded.
The FB interface is a third interface of the control unit, the first end of the resistor R9 is connected with the second end of the second diode D2, the second end of the resistor R9 is connected with the first end of the resistor R10 and the FB interface respectively, the second end of the resistor R10 is grounded and used for voltage division protection of the FB interface, the FB interface is enabled to receive a voltage signal finally output by the second voltage stabilizing unit 2, and accordingly the control unit can comprehensively judge and generate a corresponding control signal according to the fed-back voltage signal and the second voltage signal so as to adjust the duty ratio of the switching transistor M1.
In one embodiment, the present application provides a vehicle comprising a battery 3, a load 4, and a battery voltage regulator of any of the above embodiments.
In application, in the running process of a vehicle comprising the storage battery voltage stabilizing device, when the storage battery is in an abnormal working state due to the working condition of the vehicle and outputs higher or lower voltage, the storage battery voltage stabilizing device can process according to a first voltage signal output by the storage battery, so that a load can finally receive a proper target voltage signal, and the load can run normally.
In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "desired embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (11)

1. A battery voltage regulator apparatus, said apparatus comprising:
the first end of the first voltage stabilizing module is connected with the storage battery and is used for receiving a first voltage signal output by the storage battery to store electric energy when the storage battery is in a normal working state or an overvoltage working state and outputting a compensation signal to compensate the first voltage signal to form a second voltage signal when the storage battery is in an undervoltage working state;
The first end of the second voltage stabilizing module is connected with the second end of the first voltage stabilizing module, the second end of the second voltage stabilizing module is connected with a load, and the second voltage stabilizing module is used for carrying out voltage conversion processing on the second voltage signal under the condition that the storage battery is in an abnormal working state and outputting a target voltage signal to the load.
2. The battery voltage regulator of claim 1, wherein the first voltage regulator module comprises:
the first end of the filtering unit is connected with the storage battery and is used for receiving the first voltage signal and filtering the first voltage signal;
The anti-reflection unit is used for preventing the electric signal at the second end of the anti-reflection unit from being output to the first end of the anti-reflection unit under the condition that the storage battery is in an under-voltage working state;
The first end of the supporting unit is connected with the second end of the anti-reflection unit, and is used for receiving a first electric signal output by the storage battery to store electric energy when the storage battery is in a normal working state or an overvoltage working state, and outputting a compensation signal to compensate the first voltage signal to form a second voltage signal when the storage battery is in an undervoltage working state.
3. The battery voltage stabilizing device according to claim 2, wherein the supporting unit includes:
The first end of the supporting capacitor is connected with the second end of the anti-reflection unit, and the second end of the supporting capacitor is grounded and is used for receiving a first voltage signal output by the storage battery under the condition that the storage battery is in a normal working state or an overvoltage working state so as to store electric energy, and outputting a compensation signal under the condition that the storage battery is in an undervoltage working state so as to compensate the first voltage signal to form a second voltage signal.
4. The battery voltage stabilizing apparatus according to claim 2, wherein the filtering unit includes:
The first end of the first filtering subunit is connected with the storage battery and is used for receiving the first voltage signal and performing primary filtering processing on the first voltage signal;
The first end of the second filtering subunit is connected with the second end of the first filtering subunit, and the second end of the second filtering subunit is connected with the anti-reflection unit and is used for performing secondary filtering processing on the first voltage signal subjected to primary filtering processing.
5. The battery voltage regulator of claim 4, wherein the first filtering subunit comprises:
The first end of the first filter capacitor is connected with the positive electrode of the storage battery, and the second end of the first filter capacitor is connected with the negative electrode of the storage battery;
The first end of the first filter inductor is respectively connected with the first end of the first filter capacitor and the anode of the storage battery;
the first end of the second filter capacitor is connected with the second end of the first filter inductor, and the second end of the second filter capacitor is grounded;
the first end of the second filter inductor is respectively connected with the second end of the first filter capacitor and the negative electrode of the storage battery;
the first end of the third filter capacitor is connected with the second end of the second filter inductor, and the second end of the third filter capacitor is grounded;
the second filtering subunit includes:
The first end of the fourth filter capacitor is respectively connected with the first end of the second filter capacitor and the second end of the first filter inductor, and the second end of the fourth filter capacitor is respectively connected with the first end of the third filter capacitor and the second end of the second filter inductor;
The first end of the third filter inductor is respectively connected with the first end of the fourth filter capacitor, the first end of the second filter capacitor and the second end of the first filter inductor;
A first end of the fifth filter capacitor is connected with a second end of the third filter inductor, and a second end of the fifth filter capacitor is grounded;
the first end of the fourth filter inductor is respectively connected with the second end of the fourth filter capacitor, the first end of the third filter capacitor and the second end of the second filter inductor;
and the first end of the sixth filter capacitor is connected with the second end of the fourth filter inductor, and the second end of the sixth filter capacitor is grounded.
6. The battery voltage stabilizing device according to claim 2, wherein the anti-reflection unit includes:
The first end of the first diode is connected with the second end of the filtering unit, and the second end of the first diode is connected with the first end of the supporting unit and used for preventing the supporting unit from outputting a second voltage signal to the storage battery under the condition that the storage battery is in an under-voltage state.
7. The battery voltage regulator of claim 1, wherein the second voltage regulator module comprises:
The first interface of the control unit is connected with the second end of the first voltage stabilizing module and is used for receiving the second voltage signal output by the first voltage stabilizing module and outputting a control signal according to the second voltage signal;
The first end of the energy storage unit is connected with the second end of the first voltage stabilizing module, and the second end of the energy storage unit is connected with the load;
The first end of the main control switch is connected with the third end of the energy storage unit, the control end of the main control switch is connected with the second interface of the control unit, and the main control switch is used for responding to the on-off of the control signal and adjusting the duty ratio of the main control switch so that the energy storage unit outputs the target voltage signal.
8. The battery voltage regulator according to claim 7, wherein the energy storage unit comprises:
The first end of the first energy storage inductor is connected with the second end of the first voltage stabilizing module, and is used for receiving the second voltage signal to store electric energy when the main control switch is in a conducting state and supplying power to the load when the main control switch is in an off state;
the first end of the first energy storage capacitor is connected with the second end of the first energy storage inductor;
The first end of the second energy storage inductor is connected with the second end of the first energy storage capacitor, and the second end of the second energy storage inductor is grounded and used for storing electric energy in the first energy storage capacitor when the main control switch is in a conducting state and supplying power to the load when the main control switch is in an off state;
The first end of the second diode is connected with the first end of the second energy storage inductor and the second end of the first energy storage capacitor respectively, and the second end of the second diode is connected with the load and is used for conducting the first end to the second end of the second diode in a unidirectional way under the condition that the main control switch is in an off state so that the first energy storage inductor and the second energy storage inductor supply power for the load;
The first end of the second energy storage capacitor is connected with the second end of the second diode and the load respectively, and the second end of the second energy storage capacitor is grounded and used for supplying power to the load when the main control switch is in a conducting state and storing electric energy output by the second energy storage inductor when the main control switch is in an off state.
9. The battery voltage regulator of claim 7, wherein the master switch comprises:
And the grid electrode of the switching transistor is connected with the second interface of the control unit, the first electrode of the switching transistor is connected with the third end of the energy storage unit, and the second electrode of the switching transistor is grounded.
10. The battery voltage regulator of claim 7, wherein the second end of the energy storage unit is further connected to a third interface of the control unit, and the control unit is further configured to adjust the control signal according to the target voltage signal to adjust the duty cycle of the master switch.
11. A vehicle comprising a battery, a load, and the battery voltage stabilizing apparatus of any one of claims 1 to 10.
CN202410081485.5A 2024-01-19 2024-01-19 Storage battery voltage stabilizing device and vehicle Pending CN118100352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410081485.5A CN118100352A (en) 2024-01-19 2024-01-19 Storage battery voltage stabilizing device and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410081485.5A CN118100352A (en) 2024-01-19 2024-01-19 Storage battery voltage stabilizing device and vehicle

Publications (1)

Publication Number Publication Date
CN118100352A true CN118100352A (en) 2024-05-28

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Family Applications (1)

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Country Link
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