CN109144153B - Closed-loop charging voltage stabilizing device and system - Google Patents
Closed-loop charging voltage stabilizing device and system Download PDFInfo
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- CN109144153B CN109144153B CN201710451167.3A CN201710451167A CN109144153B CN 109144153 B CN109144153 B CN 109144153B CN 201710451167 A CN201710451167 A CN 201710451167A CN 109144153 B CN109144153 B CN 109144153B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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- 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
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Abstract
The invention provides a closed loop charging voltage stabilizing device, which comprises: at least one management module. Each management module is electrically connected in parallel with at least one corresponding battery in the battery core group, and performs charging and voltage stabilization management when external current is applied to the battery core group. The management module comprises: the voltage stabilizing unit, the shunt enabling unit and the at least one shunt enhancing unit. When the voltage of the at least one battery meets the voltage threshold, the voltage stabilizing unit stabilizes the voltage of the at least one battery, and the shunt enabling unit is enabled so that the first part of the external current applied to the battery core pack passes through the shunt enabling unit. When the shunt enabling unit is enabled, the shunt enabling unit enables the shunt enhancing unit to enable a second part of the external current, which is larger than the first part, to flow out through the shunt enhancing unit.
Description
Technical Field
The present invention relates to a charging device and a charging system, and more particularly, to a closed-loop charging voltage regulator device and a charging system.
Background
Lead-acid batteries, also called lead storage batteries, are widely used in automobiles, vehicles, or various devices, or in UPS, wireless motors, emergency lighting devices, communication motors, and industrial motor devices. However, due to the high pollution of lead-acid battery materials and environmental protection, the industry is moving to replace lead-acid batteries with other batteries with better power supply characteristics and environmental protection.
The lithium ion battery is a technical scheme which effectively replaces a lead-acid battery in the current practice. However, lithium ion batteries have stability and safety problems resulting from increased internal temperature of the batteries, including improper heating of the batteries, overcharge, short circuit due to contact between positive and negative electrode materials, and the like. In order to avoid overheating and even explosion of lithium ion batteries, a plurality of self-protection mechanisms are built in modern lithium ion batteries, for example, each lithium ion battery used in consumer electronic products (such as pen power, mobile phones and the like) is matched with a power supply control chip which is used for monitoring the voltage and the temperature of the battery; for example, when the voltage or the temperature exceeds the set range, the chip can be automatically powered off.
Although in the charging management circuit of the lithium ion battery in the prior art, when the lithium ion battery is fully charged, the charging management circuit protects the battery and disconnects the battery from the external power source by using the switch component to stop charging. When the starting battery of the lithium ion battery is applied to an automobile, the external power supply is generated by an internal generator of the automobile, and a surge or an over-high voltage condition may be generated; if the battery is fully charged and the external power source is disconnected from the external power source and then electrically connected to the electronic device in the vehicle, the external power source may break down the components at a voltage higher than the voltage required by the battery power and the surge voltage, which may cause malfunction of the vehicle or vehicle.
Therefore, the lithium ion battery still needs to be improved on the charging management circuit, and can be safely applied to various devices, especially devices such as automobiles or vehicles, so as to ensure that the automobiles or the vehicles do not have the danger caused by misoperation.
Disclosure of Invention
The invention aims to provide a closed-loop charging voltage stabilizing device, which is used for charging and voltage stabilizing management of a battery core group, so that the battery core group has the characteristic of stabilizing the voltage at the upper limit voltage on the whole.
Another objective of the present invention is to provide a closed-loop charging voltage-stabilizing system, which at least comprises a battery core set and a closed-loop charging voltage-stabilizing device, and can be implemented as a system having positive and negative terminals and capable of performing charging and voltage-stabilizing management inside, so as to fully charge each rechargeable battery in the battery core set, thereby achieving stable voltage output of the battery core set and avoiding overcharge or surge influence from the external power source.
In order to achieve the above object, the present invention provides a closed-loop charging voltage regulator apparatus for managing charging voltage regulation of a battery core set including a plurality of serially connected rechargeable batteries, the closed-loop charging voltage regulator apparatus comprising: at least one management module. Each management module is used for being electrically connected with at least one corresponding battery in the rechargeable batteries in parallel, and performing charging and voltage stabilization management when external current is applied to the battery core group. The management module comprises: the voltage stabilizing unit, the shunt enabling unit and the at least one shunt enhancing unit. When the voltage stabilizing unit is electrically connected in parallel with the at least one battery and the voltage of the at least one battery satisfies a voltage threshold, the voltage stabilizing unit stabilizes the voltage of the at least one battery. The shunt enabling unit is coupled to the voltage stabilizing unit, and when the voltage of the at least one battery meets the voltage threshold, the voltage stabilizing unit enables the shunt enabling unit to enable a first part of the external current applied to the battery core pack to pass through the shunt enabling unit. Each of the shunt enhancing units is coupled to the shunt enabling unit, and when the shunt enabling unit is enabled, the shunt enabling unit enables the at least one shunt enhancing unit to enable a second part of the external current to flow out through the at least one shunt enhancing unit, wherein the second part of the external current is larger than the first part of the external current.
In an embodiment of the invention, the at least one shunt enhancing unit is a plurality of shunt enhancing units, and when the shunt enabling unit is enabled, the shunt enabling unit enables the shunt enhancing unit to enable the second part of the external current to flow out through the shunt enhancing unit.
In an embodiment of the invention, when the voltage of the at least one battery is smaller than the voltage threshold, the voltage stabilizing unit allows the external current to charge the at least one battery, and the voltage stabilizing unit disables the shunt enabling unit and causes the shunt enhancing units to disable.
In an embodiment of the present invention, each of the shunt enhancement units includes a constant current source circuit.
In an embodiment of the present invention, the shunt enhancing unit includes: a first shunt circuit and a second shunt circuit. And the first shunt circuit is coupled to the shunt enabling unit, and when the shunt enabling unit is enabled, at least part of the first part of the external current passes through the first shunt circuit. The second shunt circuit is coupled to the first shunt circuit and the shunt enabling unit, and when at least part of the first part of the external current passes through the first shunt circuit, the first shunt circuit enables the second shunt circuit to be conducted, so that the second part of the external current passes through the second shunt circuit; the second shunt circuit generates a control signal to the first shunt circuit, and the first shunt circuit stabilizes the current flowing through the first shunt circuit in response to the control signal, so that the shunt enhancement unit achieves stable current output.
To achieve the above another objective, the present invention provides a closed-loop charging voltage stabilizing system, including: any embodiment of the battery pack and the closed-loop charging voltage stabilizing device. The battery core group comprises a plurality of rechargeable batteries connected in series. The closed-loop charging voltage stabilizing device comprises a plurality of management modules, each management module is electrically connected with at least one corresponding battery in the rechargeable batteries in parallel, and performs charging and voltage stabilizing management when external current is applied to the battery core group. Each management module independently performs charging and voltage stabilization management on the corresponding at least one battery, so that each battery core group can achieve stable voltage output when the external current is applied.
In the embodiment of the invention, each management module is electrically connected with the corresponding rechargeable battery in the rechargeable batteries in parallel, and each management module independently performs charging and voltage stabilization management on the corresponding rechargeable battery so as to fully charge each rechargeable battery, thereby achieving stable voltage output of the battery core pack.
In an embodiment of the invention, the closed-loop charging voltage stabilizing system is a storage battery, and the positive electrode and the negative electrode of the battery core group are used for being electrically connected with an external power supply to obtain external current.
In the embodiment of the invention, when the rechargeable battery is fully charged and the external power supply applies the external current or the external voltage to the battery core pack, the storage battery converts the external current or the external voltage by the management module and the battery core pack achieves the voltage-stabilizing output, and the rechargeable battery is prevented from being overcharged or being influenced by the surge of the external power supply.
In an embodiment of the present invention, each of the rechargeable batteries is a lithium ion battery or a lead acid battery, and each of the management modules is electrically connected in parallel with at least one of the rechargeable batteries for charging and voltage stabilization management, so as to enable each of the rechargeable batteries to achieve voltage stabilization output and avoid generating overcharge or being affected by a surge of an external power source.
According to the embodiment, the closed-loop charging voltage stabilizing device and the closed-loop charging voltage stabilizing system can enable the battery core pack to have the characteristic of stabilizing the voltage at the upper limit voltage on the whole, so that the battery core pack can be safely applied to various devices such as vehicles of automobiles. Each management module independently performs charging and voltage stabilization management on the corresponding rechargeable battery so as to fully charge each rechargeable battery, thereby achieving stable voltage output of the battery core pack and avoiding generating overcharge or being influenced by a surge of an external power supply.
Drawings
Fig. 1 is a block diagram of a closed-loop charging voltage regulator apparatus according to an embodiment of the present invention.
FIG. 2 is a block diagram of an embodiment of the management module of FIG. 1.
FIG. 3 is a block circuit diagram of another embodiment of a management module.
Description of the symbols:
10 closed loop charging voltage stabilizing system
105 closed loop charging voltage stabilizer
100 rechargeable battery
110 management module
111. 111A voltage stabilizing unit
112. 112A shunt enabling unit
120. 120A shunt enhancement unit
121. 121A first shunt circuit
122. 122A second shunt circuit
T1 positive pole
T2 negative electrode
R1-R4 resistor
Resistors R11-R13, R21 and R22
ZD voltage stabilizing component
Q1, Q11, Q21 transistors
Detailed Description
For a fuller understanding of the objects, features and effects of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings, in which:
according to an embodiment of the present invention, a closed-loop charging voltage regulator is provided, which can be implemented as a device having a plurality of terminals for electrically connecting rechargeable batteries in a battery core pack to perform charging and voltage regulation management on the battery core pack.
According to another embodiment of the present invention, a closed-loop charging voltage-stabilizing system is provided, which at least comprises a battery pack and a closed-loop charging voltage-stabilizing device, and can be implemented as a system having positive and negative terminals, and capable of performing charging and voltage-stabilizing management inside; for example, a secondary battery such as a starting battery or an auxiliary battery used in a vehicle such as a general automobile or vehicle, or a main battery used in an electric vehicle. Various embodiments are described below with respect to a closed-loop charging voltage regulator apparatus and system.
Fig. 1 is a block diagram of a closed-loop charging voltage regulator apparatus according to an embodiment of the present invention. As shown in fig. 1, the closed-loop charging regulator 105 is suitable for the charging regulation management of a battery core pack including a plurality of series-connected rechargeable batteries 100. The closed-loop charging voltage-stabilizing device 105 includes: at least one management module 110. Each management module 110 is electrically connected in parallel to one or more corresponding batteries in the rechargeable battery 100, and performs charging and voltage stabilization management when external current is applied to the battery core pack. The management module 110 includes: a voltage stabilizing unit 111, a shunt enabling unit 112, and at least one shunt enhancing unit 120.
For example, in fig. 1, the closed-loop charging voltage regulator 105 includes 3 management modules 110, and each management module 110 includes two shunt enhancement units 120; the positive electrode T1 and the negative electrode T2 of the battery core pack may be electrically connected to an external power source to obtain external current from the external power source. The invention is not limited by the above examples. For example, in implementation, the number of the management modules and the shunt enhancement units may be increased or decreased according to the actual application requirements, or parameters such as the number of batteries in the battery pack, the requirement for voltage stabilization, or the maximum value of external current; in configuration, one management module may be used to manage one battery, and one management module may also be used to manage two or more batteries connected in series or in parallel.
For example, the battery core assembly includes a plurality of serially connected rechargeable batteries 100, and the rechargeable batteries 100 may be lithium ion batteries, lead acid batteries, or other batteries, wherein the lithium ion batteries are one of lithium cobalt batteries, lithium nickel batteries, lithium manganese batteries, lithium iron phosphate batteries, and lithium ternary batteries. For example, the positive electrode T1 and the negative electrode T2 of the battery core pack installed in a vehicle such as an automobile can be electrically connected to the power source provided by the vehicle, i.e., the external power source relative to the battery core pack can be the power source generated by rectifying the power of the generator or other auxiliary power sources. In addition, the battery core group can also comprise other rechargeable batteries connected in series or in parallel.
The voltage stabilizing unit 111 is electrically connected in parallel with at least one battery (e.g., the rechargeable battery 100), and when the voltage of the at least one battery is less than the voltage threshold, the voltage stabilizing unit 111 allows an external current to charge the at least one battery. When the voltage of the at least one battery satisfies the voltage threshold, the voltage stabilizing unit 111 stabilizes the voltage of the at least one battery. For example, the rechargeable battery 100 is a lithium ion battery, and the operating voltage range is about 3.3V to 3.7V, so the voltage threshold can be set to a voltage value corresponding to the operating voltage of the rechargeable battery 100, such as 3.6V, so that the voltage of the rechargeable battery 100 is stabilized at 3.6V when the voltage threshold is satisfied by the rechargeable battery 100. In addition, the voltage stabilizing unit 111 stabilizes the voltage of at least one battery (e.g., the rechargeable battery 100) in the sense that: the voltage of the rechargeable battery 100 is stabilized at a predetermined value (e.g., 3.6V) or within an error range of the predetermined value (e.g., between 3.5V and 3.7V; or between 3.55V and 3.65V due to battery characteristics or environmental factors). Furthermore, the present invention is not limited by the above examples. For example, the rechargeable battery 100 may also be a lead-acid battery.
The shunt enabling unit 112 is coupled to the voltage stabilizing unit 111, the shunt enabling unit 112 has an input terminal, an output terminal and an enabling terminal, when the voltage of at least one battery (such as the rechargeable battery 100) satisfies the voltage threshold, the voltage stabilizing unit 111 enables the shunt enabling unit 112 to enable a first portion of the external current applied to the battery core pack to flow out from the output terminal through the enabling terminal and the input terminal of the shunt enabling unit 112.
Each shunt enhancing unit 120 is coupled to the input end and the output end of the shunt enabling unit 112, when the shunt enabling unit 112 is enabled, the shunt enabling unit 112 enables the shunt enhancing unit 120 to enable a second part of the external current to flow out from the input end and the output end of the shunt enabling unit 112 through the shunt enhancing unit 120, wherein the second part of the external current is greater than the first part of the external current. In other words, the shunt enhancement unit 120 provides a bypass for passing currents of larger current values. In addition, the shunt enhancement unit 120 commonly receives external current, so that the management module has stronger current receiving endurance.
By the operations of the voltage stabilizing unit 111, the shunt enabling unit 112 and the shunt enhancing unit 120, when the voltage of at least one battery (e.g., the rechargeable battery 100) satisfies the voltage threshold, the voltage stabilizing unit 111 stabilizes the voltage of the at least one battery (e.g., the rechargeable battery 100), and at least a first portion and a second portion of the external current can flow out of the rechargeable battery 100 through the shunt enabling unit 112 and the shunt enhancing unit 120, so that the voltage of the rechargeable battery 100 is not allowed to increase continuously with the external current, thereby avoiding the occurrence of a dangerous condition. In addition, the external current flowing out of the rechargeable battery 100 may be continuously used for the purpose of charging other batteries in the battery core pack. When the voltages of all the batteries in the battery core pack are stabilized to the corresponding predetermined values (e.g., voltage thresholds), i.e., voltage stabilization is balanced, the battery core pack is considered to be fully charged or fully charged; even if the external current is continuously applied to the battery core pack, most of the external current passes through the closed-loop charging voltage regulator 105 to prevent the battery core pack from being overcharged, and the damage to the battery core pack caused by the surge of the external current can be avoided.
In other words, the closed-loop charging voltage regulator 105 performs charging and voltage regulation management on the battery core pack, so that the battery core pack has characteristics similar to those of the prior art lead-acid battery, which can regulate the upper limit voltage of the battery core pack. For example, if the rechargeable battery 100 of the battery core pack is a lithium ion battery, the closed-loop charging voltage stabilizer 105 may further provide the battery core pack with a characteristic of stabilizing the voltage at the upper limit voltage, so that the battery core pack can be safely applied to various devices such as vehicles of automobiles. In addition, the closed-loop charging voltage regulator according to the present invention can also be applied to a battery core set having a plurality of lead-acid batteries connected in series, for example, the closed-loop charging voltage regulator 105 having a management module 110 is used to connect in parallel the positive electrode and the negative electrode of the battery core set, so as to prevent the battery core set from being overcharged and prevent the battery core set from being damaged by a sudden wave of an external current; thus, the life of the battery core pack can be extended. In addition, the management modules may be connected in parallel with at least one lead-acid battery to perform charging and voltage stabilization management, similar to the embodiment of fig. 1.
Referring to fig. 1 again, according to another embodiment of the present invention, at least the battery pack and the closed-loop charging voltage regulator 105 can be combined to be implemented as a closed-loop charging voltage regulator system 10 having a positive electrode T1 and a negative electrode T2, and capable of performing charging and voltage regulation management therein, such as a storage battery, for example, a starting storage battery used in a vehicle such as a general automobile or a vehicle. The closed-loop charging voltage stabilizing system 10 includes: a battery pack and a closed-circuit charging voltage regulator 105. The battery core pack includes a plurality of rechargeable batteries 100 connected in series, or may further include rechargeable batteries 100 connected in parallel. The closed-loop charging voltage regulator 105 includes a plurality of management modules 110, each management module 110 is electrically connected in parallel to at least one corresponding battery of the rechargeable batteries 100, and performs charging and voltage regulation management when an external current is applied to the battery core pack.
In the embodiment of the closed-loop charging voltage stabilizing system 10, each management module 110 is electrically connected in parallel to a corresponding rechargeable battery in the rechargeable batteries 100, and each management module 110 independently performs charging and voltage stabilizing management on the corresponding rechargeable battery to fully charge the rechargeable battery, thereby achieving stable voltage output of the battery core pack.
In addition, when the rechargeable battery is fully charged and the external power source applies the external current or the external voltage to the battery core pack, the secondary battery converts the external current or the external voltage into a stable voltage through the management module 110 and outputs the stable voltage through the positive electrode T1 and the negative electrode T2.
In the embodiment of the closed-loop charging voltage stabilizing system 10, each rechargeable battery 100 is a lithium ion battery, and each management module 110 is electrically connected in parallel with at least one of the rechargeable batteries 100 for charging and voltage stabilizing management, so as to enable each rechargeable battery to achieve voltage stabilizing output and avoid generating overcharge or being influenced by a surge of an external power source. According to this embodiment, the closed-loop charging voltage stabilizing system 10 can be implemented as a storage battery such as a starting battery or a main battery, and the storage battery can exhibit the original advantages of a lithium ion battery and also can have the characteristic of achieving voltage stabilization at an upper limit voltage, so that the storage battery can be more safely applied to various devices such as vehicles of automobiles.
In detail, in the charging management circuit of the lithium ion battery in the prior art, when the lithium ion battery is fully charged, the charging management circuit uses the switch component to disconnect the battery from the external power source to stop charging, which is the battery protection. When a starting battery of a general lithium ion battery is applied to an automobile, the external power source is generated by an internal generator, and a surge or an over-high voltage may be generated in the external power source; if the battery is fully charged and the battery is disconnected from the external power source, and then the external power source is electrically connected to the electronic device in the vehicle, the voltage of the components may be affected by the voltage due to the external power source being higher than the voltage required by the battery power, or the components may be broken down by the surge voltage, which may cause malfunction of the vehicle or the transportation means. The closed-loop charging voltage-stabilizing device 105 or the closed-loop charging voltage-stabilizing system 10 according to the present invention is used to perform charging and voltage-stabilizing management on the battery core set, so that the battery core set has the characteristics of stabilizing the voltage at the upper limit voltage thereof, which is similar to that of the prior art lead-acid battery, and thus, the danger of malfunction of the vehicle or the transportation tool caused by the voltage influence or the surge voltage breakdown of the components can be avoided.
In addition, in another embodiment of the closed-loop charging voltage-stabilizing system 10, each rechargeable battery 100 is a lead-acid battery, and each management module 110 is electrically connected in parallel with at least one of the rechargeable batteries 100 for charging and voltage-stabilizing management, so as to enable each rechargeable battery to achieve voltage-stabilizing output and avoid over-charging or being affected by a surge of an external power source.
Various embodiments of the aforementioned management module are further illustrated below. However, the implementation of the management module 110 of the present invention is not limited by these examples.
In an embodiment of the management module 110, when the voltage of the at least one battery managed or corresponding to the management module 110 is less than the voltage threshold of the voltage stabilizing unit 111, the voltage stabilizing unit 111 allows the external current to charge the at least one battery, and the voltage stabilizing unit 111 disables the shunt enabling unit 112 and causes the at least one shunt enhancing unit 120 to be disabled.
In some embodiments of the management module 110, the shunt enhancement unit 120 in the management module 110 may include a constant current source circuit, and the constant current source circuit may be implemented as: a constant current source circuit based on a transistor, a constant current source circuit based on an operational amplifier and a transistor, or other constant current source circuits, wherein the transistor can be a bipolar transistor (BJT) and a Field Effect Transistor (FET), or a Metal Oxide Semiconductor Field Effect Transistor (MOSFET), etc.; but the implementation of the invention is not so limited.
FIG. 2 is a block diagram of an embodiment of the management module of FIG. 1. As shown in fig. 2, an embodiment of the shunt enhancement unit 120 includes: a first shunt circuit 121 and at least one second shunt circuit 122. The first shunt circuit 121 is coupled to the shunt enable unit 112, and when the shunt enable unit 112 is enabled, at least a portion of the first part of the external current passes through the first shunt circuit 121. The second shunt circuit 122 is coupled to the first shunt circuit 121 and the shunt enabling unit 112, and when at least a portion of the first part of the external current passes through the first shunt circuit 121, the first shunt circuit 121 turns on the second shunt circuit 122, so that the second part of the external current passes through the second shunt circuit 122. According to the present embodiment, the shunt enhancing unit 120 can be further implemented as a constant current source circuit. For example, the second shunt circuit 122 may generate a control signal to the first shunt circuit 121, so that the first shunt circuit 121 stabilizes the current flowing through the first shunt circuit 121 in response to the control signal, and the currents of the first shunt circuit 121 and the second shunt circuit 122 are balanced, thereby enabling the shunt enhancement unit 120 to achieve stable current output.
FIG. 3 is a block circuit diagram of another embodiment of a management module. As shown in fig. 3, the management module 110A includes: a voltage stabilizing unit 111A, a shunt enabling unit 112A, and a plurality of shunt enhancing units 120A.
The voltage stabilizing unit 111A includes resistors R1 to R4 and a voltage stabilizing component ZD. The resistors R1 and R2 form a voltage divider circuit, which can be used for coupling with the rechargeable battery to generate a reference voltage for the voltage regulator module ZD; in addition, the voltage stabilizing component ZD sets the voltage threshold of the voltage stabilizing unit 111A through the resistors R3 and R4.
The shunt enable unit 112A includes at least one transistor Q1; however, the invention is not limited thereto, and a plurality of transistors or other switching devices, such as field effect transistors (but not mosfets), etc., or other circuit devices may be used to implement the shunt enable unit 112A. When the voltage threshold is satisfied, the voltage stabilizing device ZD is turned on, and generates a voltage (enable signal) capable of enabling the transistor Q1 through the resistors R3 and R4. The voltage stabilizing unit 111A enables the shunt enabling unit 112A such that the first part of the external current applied to the battery core pack passes through the shunt enabling unit 112A.
The diversion enhancement unit 120A includes: first shunt circuit 121A and at least one second shunt circuit 122A. For example, the first shunt circuit 121A includes resistors R11, R12, R13 and a transistor Q11. The second shunt circuit 122A includes resistors R21 and R22 and a transistor Q21. The first shunt circuit 121A is coupled to the shunt enable unit 112A, and when the shunt enable unit 112A is enabled, at least a portion of the first part of the external current passes through the first shunt circuit 121A. When at least a portion of the first part of the external current passes through the first shunt circuit 121A, the first shunt circuit 121A generates a voltage (e.g., forward bias between the base and the emitter) that can turn on the transistor Q21 through the resistors R12 and R13 to turn on the second shunt circuit 122A, so that the second part of the external current passes through the second shunt circuit 122A, wherein the voltage that turns on the transistor Q21 can be regarded as an enable signal. When a current passes through the second shunt circuit 122A and the resistors R13 and R22 generate a voltage capable of turning on the transistor Q11 (which may be regarded as a negative feedback or control signal), the transistor Q11 of the first shunt circuit 121A turns on to stabilize the current flowing through the first shunt circuit 121A, thereby balancing the current inside the shunt enhancement unit 120A to achieve a stable rated current output. Wherein the second portion of the external current is larger than the first portion of the external current, i.e., the shunt enhancement unit 120A provides a bypass for passing currents of larger current values. For example, in fig. 3, the component parameters of the second shunt circuit 122A may be designed to make the second shunt circuit 122A reach the rated current, i.e. the above-mentioned negative feedback or control signal is generated to make the shunt enhancement unit 120A reach the stable rated current output.
For example, the resistors R21 and R22 can be implemented by selecting components with high voltage endurance, so that the shunt enhancement unit 120A has a stronger current-conducting capability. However, the present invention is not limited by this example; for example, in another embodiment, the shunt enhancement unit 120A may also have two or more second shunt circuits 122A and is coupled to the first shunt circuit 121A, and the first shunt circuit 121A generates the enable signal to turn on the second shunt circuit 122A, so as to enable the second part of the external current to pass through the second shunt circuit 122A. In implementation, the number of the shunt enhancement units and the number of the second shunt circuits in the management module may be increased or decreased according to actual application requirements, or parameters such as the number of batteries in the battery pack, the requirement for voltage stabilization, or the maximum value of external current. However, implementations of the invention are not limited by the example of FIG. 3; the management module can be realized by utilizing various electronic components, such as a switch component, a voltage stabilizing component, an operational amplifier and the like in any mode; also, components in the circuit illustrated in fig. 3 may be replaced by any equivalent components or circuits, such as resistors may be implemented by constant current source circuits, such as transistors may be replaced by other different types of transistors or switching components or circuits, such as voltage stabilization units may be replaced by circuits or chips that include zener diodes or other voltage stabilization components; therefore, persons skilled in the art can implement or change the embodiments of the present invention in any equivalent manner according to the above embodiments, and the implementation or change is an embodiment of the present invention, and therefore, the detailed description is omitted.
By means of the embodiments, a closed-loop charging voltage regulator is provided, which can be implemented as a device having a plurality of terminals for electrically connecting the rechargeable batteries in the battery core set to perform charging and voltage regulation management on the battery core set. According to another embodiment of the present invention, a closed-loop charging voltage-stabilizing system is provided, which at least comprises a battery pack and a closed-loop charging voltage-stabilizing device, and can be implemented as a system having positive and negative terminals, and capable of performing charging and voltage-stabilizing management inside; for example, a battery such as a starting battery or an auxiliary battery used in a vehicle such as a general automobile or a vehicle. Thereby, the characteristics of the entire battery core pack are changed to have the characteristics of being stabilized at the upper limit voltage, so that the battery core pack can be safely applied to various devices such as vehicles of automobiles. Each management module independently performs charging and voltage stabilization management on the corresponding rechargeable battery so as to fully charge the rechargeable batteries, thereby achieving stable voltage output of the battery core group and avoiding the generation of overcharge or the influence of surge of an external power supply. In addition, when the rechargeable battery is fully charged and the external power supply applies external current or external voltage to the battery core group, the storage battery converts the external current or the external voltage through the management module so that the positive electrode and the negative electrode of the battery core group achieve voltage stabilization output.
While the invention has been disclosed in terms of preferred embodiments, those skilled in the art will recognize that the embodiments are illustrative only and should not be construed as limiting the scope of the invention. It is noted that equivalent variations and substitutions for the embodiments are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention is subject to the scope defined by the claims.
Claims (10)
1. A closed-loop charging voltage regulator device for the charging voltage regulation management of a battery core set including a plurality of serially connected rechargeable batteries, the closed-loop charging voltage regulator device comprising:
at least one management module, each of the management modules being electrically connected in parallel to a corresponding at least one of the rechargeable batteries and performing charging and voltage stabilization management when an external current is applied to the battery core pack, the management module including:
a voltage stabilization unit electrically connected in parallel with the at least one battery, the voltage stabilization unit stabilizing the voltage of the at least one battery when the voltage of the at least one battery meets a voltage threshold;
a shunt enable unit, which is a circuit component of a non-mosfet, coupled to the voltage stabilization unit, the shunt enable unit having an input terminal, an output terminal, and an enable terminal, wherein when the voltage of the at least one battery satisfies the voltage threshold, the voltage stabilization unit enables the shunt enable unit through the enable terminal to enable an external current applied to the battery core pack to flow out from the output terminal through the enable terminal and the input terminal of the shunt enable unit, and the output terminal has a first part of the external current; and
and when the shunt enabling unit is enabled, the shunt enabling unit enables the at least one shunt enhancing unit to enable the external current to flow out of a second part of the external current from the input end and the output end of the shunt enabling unit through the at least one shunt enhancing unit, wherein the second part of the external current is larger than the first part of the external current.
2. The closed-loop charging voltage regulator apparatus according to claim 1, wherein the at least one shunt enhancement unit is a plurality of shunt enhancement units, and when the shunt enabling unit is enabled, the shunt enabling unit enables the shunt enhancement unit to enable the second portion of the external current to flow out through the shunt enhancement unit.
3. The closed-loop charging regulator apparatus according to claim 1, wherein when the voltage of the at least one battery is less than the voltage threshold, the voltage stabilizing unit allows the external current to charge the at least one battery, and the voltage stabilizing unit disables the shunt enabling unit and causes each of the shunt enhancing units to disable.
4. The closed-loop charging voltage regulator apparatus according to claim 1, wherein the shunt enhancement unit comprises:
a first shunt circuit coupled to the shunt enabling unit, wherein when the shunt enabling unit is enabled, at least part of the first part of the external current passes through the first shunt circuit; and
a second shunt circuit coupled to the first shunt circuit and the shunt enabling unit, wherein when at least a portion of the first part of the external current passes through the first shunt circuit, the first shunt circuit turns on the second shunt circuit to enable a second part of the external current to pass through the second shunt circuit; the second shunt circuit generates a control signal to the first shunt circuit, and the first shunt circuit stabilizes the current flowing through the first shunt circuit in response to the control signal, so that the shunt enhancement unit achieves stable current output.
5. The closed-loop charging voltage regulator apparatus according to any one of claims 1 to 4, wherein each of the shunt enhancement units comprises a constant current source circuit.
6. A closed loop charging regulation system comprising:
the battery core group comprises a plurality of rechargeable batteries connected in series; and
a plurality of management modules, each of which is electrically connected in parallel to at least one corresponding one of the rechargeable batteries and performs charging and voltage stabilization management when an external current is applied to the battery core pack, each of the management modules including:
a voltage stabilizing unit electrically connected in parallel with the at least one battery, the voltage stabilizing unit stabilizing the voltage of the at least one battery when the voltage of the at least one battery satisfies a voltage threshold;
a shunt enable unit, which is a circuit component of a non-mosfet, coupled to the voltage stabilization unit, the shunt enable unit having an input terminal, an output terminal, and an enable terminal, wherein when the voltage of the at least one battery satisfies the voltage threshold, the voltage stabilization unit enables the shunt enable unit through the enable terminal to enable an external current applied to the battery core pack to flow out from the output terminal through the enable terminal and the input terminal of the shunt enable unit, and the output terminal has a first part of the external current; and
at least one shunt enhancing unit, each of the shunt enhancing units being coupled to the input terminal and the output terminal of the shunt enabling unit, wherein when the shunt enabling unit is enabled, the shunt enabling unit enables the at least one shunt enhancing unit to enable the external current to flow out of a second part of the external current from the input terminal and the output terminal of the shunt enabling unit through the at least one shunt enhancing unit, wherein the second part of the external current is greater than the first part of the external current;
each management module independently performs charging and voltage stabilization management on the corresponding at least one battery, so that each battery core group can achieve stable voltage output when the external current is applied.
7. The closed-loop charging voltage regulator system according to claim 6, wherein the at least one shunt enhancement unit is a plurality of shunt enhancement units, and when the shunt enabling unit is enabled, the shunt enabling unit enables the shunt enhancement unit to enable the second portion of the external current to flow out through the shunt enhancement unit.
8. The closed-loop charging regulator system according to claim 6, wherein when the voltage of the at least one battery is less than the voltage threshold, the voltage stabilizing unit allows the external current to charge the at least one battery, and the voltage stabilizing unit disables the shunt enabling unit and causes each of the shunt enhancing units to disable.
9. The closed-loop charging voltage stabilizing system according to any one of claims 6 to 8, wherein the closed-loop charging voltage stabilizing system is a secondary battery, the positive electrode and the negative electrode of the battery core pack are used for being electrically connected with an external power source to obtain the external current, when the rechargeable battery is fully charged and the external power source applies the external current or the external voltage to the battery core pack, the secondary battery converts the external current or the external voltage by the management module to make the positive electrode and the negative electrode of the battery core pack reach a voltage stabilizing output and avoid the rechargeable battery from being overcharged or influenced by the surge of the external power source.
10. The closed-loop charging voltage stabilizing system as claimed in any one of claims 6 to 8, wherein the closed-loop charging voltage stabilizing system is a secondary battery, the positive electrode and the negative electrode of the battery core set are used for being electrically connected with an external power supply to obtain the external current, and each of the secondary batteries is a lithium ion battery or a lead acid battery.
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