CN201226449Y - Voltage-boosting type charge control circuit and electronic device - Google Patents

Voltage-boosting type charge control circuit and electronic device Download PDF

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Publication number
CN201226449Y
CN201226449Y CNU2008200948860U CN200820094886U CN201226449Y CN 201226449 Y CN201226449 Y CN 201226449Y CN U2008200948860 U CNU2008200948860 U CN U2008200948860U CN 200820094886 U CN200820094886 U CN 200820094886U CN 201226449 Y CN201226449 Y CN 201226449Y
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circuit
output
connected
microcontroller
voltage
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CNU2008200948860U
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郑广月
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比亚迪股份有限公司
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Abstract

The utility model is applicable to the field of power supply, and provides a boosting-type charge control circuit. The boosting-type charge control circuit comprises a boosting-type change-over circuit, a voltage sampling circuit, a current feedback circuit, a power supply management circuit and a microcontroller. The power supply inlet end of the microcontroller is connected with the output end of the power supply management circuit. The voltage sampling end of the microcontroller is connected with the output end of the voltage sampling circuit; and the current feedback end of the microcontroller is connected with the output end of the current feedback circuit. The boosting-type charge control circuit adopts the microcontroller to precisely control the charging current output by the boosting-type change-over circuit so that electronic equipment and batteries are effectively protected, thus prolonging the service lives of the electric equipment and the batteries.

Description

一种升压型充电控制电路及电子设备 A booster type charging control circuit and the electronic device

技术领域 FIELD

本实用新型属于电源领域,尤其涉及一种升压型充电控制电路及电子设备。 The present invention belongs to the field of power supplies, particularly to a step-up charge control circuit and an electronic device. 背景技术 Background technique

随着电脑的普及,越来越多的电子设备可以通过电脑的USB接口输出的5V电源进行充电,然而,由于5V电源的电压太低而不能满足各种电子设备充电的需求,因此一种升压型充电控制电路被广泛的应用。 With the popularity of computers, more and more electronic devices can be charged by the computer's USB port 5V power output, however, since the 5V supply voltage is too low to meet the requirements of various electronic devices for charging, and therefore method of upgrading type charging pressure control circuit is widely used.

图1为现有技术提供的升压型充电控制电路的模块结构图;包括:升压转换电路ll、电压采样电路12、充电控制电路13、升压转换控制电路14以及电流反馈电路15;升压转换电路11的输入端连接至电脑的USB接口,在升压转换控制电路14的控制下将USB接口输出的直流低电压经过升压转换后给电子设备10充电,同时,充电控制电路13将电压采样电路12采集到的电子设备10中电池的充电状态反馈给升压转换控制电路14,进一步控制充电电流的大小,从而可以有效的保护电子设备10中的电池不被损坏。 The module structure of a boosting type charging control circuit of Figure 1 is a prior art provided; comprising: a boost converter circuit ll, a voltage sampling circuit 12, a charging control circuit 13, the boost converter circuit 14 and the current feedback control circuit 15; L input voltage conversion circuit 11 is connected to a computer's USB port, under the control of the boost converter control circuit 14 to low-voltage DC output from the USB interface after the boost converter to the electronic device 10 is charged, while the charge control circuit 13 voltage sampling circuit 12 is collected in the electronic device 10 is fed back to the state of charge of the battery boost converter control circuit 14 further controls the charging current, which can effectively protect the battery in the electronic device 10 is not damaged. 然而,现有技术提供的升压型充电控制电路对于处于异常情况(比如电池因过放电而导致的电压偏低)的电子设备,直接用较大的电流充电,容易损坏电子设备及其电池,缩短了电子设备的使用寿命。 However, boost charging control circuit for the prior art to provide in abnormal condition (such as a battery due to over-discharge caused by low voltage) of the electronic device, a large current charging directly, easy to damage the electronic device and the battery, shorten the life of electronic devices.

实用新型内容 SUMMARY

本实用新型的目的在于提供一种升压型充电控制电路,旨在解决现有技术提供的升压型充电控制电路不能有效的保护电子设备,导致电子设备的使用寿命短的问题。 The present invention aims to provide a boost charge control circuit, to solve the boost type charging control circuit of the prior art can not provide effective protection of electronic equipment, leading to the problem of short service life of the electronic device.

本实用新型是这样实现的, 一种升压型充电控制电路,所述升压型充电控制电路包括: The present invention is achieved in a step-charge control circuit, the boost-type charge control circuit comprises:

升压转换电路,将输入的直流低电压信号进行升压转换后输出给电子设备; After the low-voltage DC signal boost converter circuit, the boost converter output inputted to the electronic device;

电压釆样电路,其输入端与所述升压转换电路的输出端连接,将所述升压转换电路输出的电压信号反馈输出; Bian voltage sampling circuit, having an input connected to the output terminal of the boost converter circuit, the boost voltage signal output from the feedback output converting circuit;

电流反馈电路,其输入端与所述升压转换电路的输出端连接,将所述升压转换电路输出的电流信号反馈输出; Current feedback circuit, an input terminal of the boost converter circuit is connected to the output, the current output from the signal converting circuit to output the boost feedback;

电源管理电路,将输入的直流低电压信号进行稳压后输出;以及 A power management circuit, low voltage DC input signal after the regulator output; and

微控制器,其电源输入端连接至所述电源管理电路的输出端;其电压采样端连接至所述电压采样电路的输出端,接收所述电压采样电路输出的反馈电压信号,进行处理后输出第一控制信号,控制所述升压转换电路输出的充电电流的大小;其电流反馈端连接至所述电流反馈电路的输出端,接收所述电流反馈电路输出的反馈电流信号,进行处理后输出第二控制信号,控制所述升压转换电路输出的充电电流为设定的电流值。 Microcontroller power supply input connected to the output terminal of the power management circuit; after sampling the voltage output terminal is connected to the voltage sampling circuit, a voltage sampling circuit for receiving the output voltage feedback signal, output processing a first control signal to control the charging current of the boost converter circuit output; current feedback terminal after it is connected to the output of the current feedback circuit, the feedback circuit receiving the current output from the current feedback signal, output processing a second control signal controlling the charging current of the boost converter circuit output to the set current value.

本实用新型的另一目的在于提供一种采用上述升压型充电控制电路充电的电子设备。 Another object of the present invention is to provide an electronic control device of the boost type charging circuit for charging.

本实用新型提供的升压型充电控制电路采用微控制器控制升压转换电路, 通过电压采样电路反馈的电压信号检测电子设备中电池的状态,对于充满的电池,及时关断充电电流,并以小电流补充充电;对于电压低的电池,先进行预充电,待电池的电压上升至正常值时再进行大电流充电;这种精确、智能的控制,使得电子设备以及电池得到了有效的保护,从而延长了电子设备及其电池的使用寿命。 The present invention provides the use of a boost type charging state control circuit controls the boost converter microcontroller circuit, a feedback voltage by the voltage signal sampling circuit detects the electronic device battery to fully charged battery, the charging current is turned off in time, and to small current trickle charge; for a low-voltage battery, the first pre-charge voltage of the battery is increased to be further large current charging to normal; this accurate, intelligent control, enable the electronic device and the battery has been effectively protected, thus extending the life of electronic devices and batteries.

附图说明 BRIEF DESCRIPTION

图1是现有技术提供的升压型充电控制电路的模块结构图; FIG. 1 is a block configuration diagram of a step-up charging control circuit of the prior art to provide;

图2是本实用新型实施例提供的升压型充电控制电路的模块结构图; FIG 2 is a block configuration diagram of a step-up charging control circuit of the present embodiment provided by the invention;

图3是本实用新型实施例提供的升压型充电控制电路的电路图。 FIG 3 is a step-up charging control circuit diagram of an embodiment of the present invention is provided. 具体实施方式 Detailed ways

为了使本实用新型的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本实用新型进行进一步详细说明。 In order that the invention objectives, technical solutions and advantages clearer, the accompanying drawings and the following embodiments, the present invention is described in detail further. 应当理解,此处所描述的具体实施例仅仅用以解释本实用新型,并不用于限定本实用新型。 It should be understood that the specific embodiments described herein are only intended to illustrate the present invention, not to limit the present invention.

本实用新型实施例提供的升压型充电控制电路通过检测电子设备中电池的状态以及充电电流的反馈,由微控制器控制升压转换电路输出的充电电流的大小,使得电子设备以及电池得到了有效的保护。 Boost charging control circuit embodiment of the present invention provides an electronic device by detecting the state of the battery charging current and the feedback, the magnitude of the charging current of the boost converter circuit output controlled by the microcontroller, an electronic device and a battery that has been effective protection.

本实用新型实施例提供的升压型充电控制电路主要应用于待充电的电子设 Boost charging control circuit embodiment of the present invention are used primarily by electronic be charged

备中,其模块结构如图2所示,为了便于说明,仅示出了与本实用新型相关的部分,详述如下。 In preparation, its modular structure shown in Figure 2, for convenience of description, showing only the part related to the present invention new, described in detail below.

升压型充电控制电路包括:电源管理电路21、升压转换电路22、电压采样电路23、电流反馈电路24以及微控制器25;其中,电源管理电路21和升压转换电路22的输入端均与电脑的USB接口连接,电源管理电路21将从USB接口输出的直流低电压进行稳压后输出给微控制器25,为孩i控制器25提供工作电压;在微控制器25的控制下升压转换电路22将从USB接口输出的直流低电压进行升压转换后给电子i殳备10充电。 Boost charge control circuit comprising: a power management circuit 21, the boost converter circuit 22, a voltage sampling circuit 23, current feedback circuit 24 and a microcontroller 25; wherein the power management circuit 21 and the input terminal of the boost converter circuit 22 are after the low-voltage DC regulated computer's USB interface, the power management circuit 21 outputs an output from the USB interface to the microcontroller 25 to provide operating voltage for the controller 25 children i; l under the control of the microcontroller 25 22 low voltage direct current outputted from the USB interface circuit of the boost converter boost converter to the electronic apparatus 10 is charged Shu i.

电路22输出的电压信号反馈输出。 A feedback voltage signal output from the output circuit 22.

电路22输出的电流信号反馈输出。 A feedback current signal output circuit 22 outputs.

微控制器25的电源输入端连接至电源管理电路21的输出端,接收电源管理电路21输出的电压信号;其电压采样端连接至电压采样电路23的输出端, 接收电压采样电路23输出的反馈电压信号,进行处理后输出第一控制信号,并控制升压转换电路22输出的充电电流的大小;其电流反馈端连接至电流反馈电路24的输出端,接收电流反馈电路24输出的反馈电流信号,进行处理后输出第二控制信号,并控制升压转换电路22输出的充电电流为设定的电流值,从而采取恒流充电,更有效的保护电子设备10。 Power input of the microcontroller 25 is connected to the output terminal of the power management circuit 21 receives a voltage signal output from the power management circuit 21; a voltage sampling end thereof connected to the output of the voltage sampling circuit 23, sampling circuit 23 receives a voltage output from the feedback voltage signal, after processing a first control signal output, and controls the charging current of the boost converter circuit 22 output; the current feedback terminal is connected to the output of the current feedback circuit 24, feedback current feedback circuit 24 receives a current signal output outputting a second control signal processing, and the charging current of the boost converter circuit 22 outputs a current set value, so as to take the constant current charging, more effective protection of the electronic device 10.

图3示出了本实用新型实施例提供的升压型充电控制电路的电路图,为了便于说明,仅示出了与本实用新型相关的部分,现结合图2详述如下。 Figure 3 shows a circuit diagram of a boost type charging control circuit of the present invention is provided by the embodiment, for convenience of explanation, only a portion related to the novel present invention, in conjunction with FIG. 2 is now described in detail as follows.

电源管理电路21将输入的直流低电压进行稳压处理后输出给微控制器25 提供工作电压;在微控制器25的控制下,升压转换电路22将输入的直流低电压进行升压转换后给电子设备10充电;通过电压采样电路23将电子设备10 中电池的状态反馈给微控制器25,微控制器25通过判断电子设备10中电池的状态来控制升压转换电路22输出的充电电流的大小;再通过电流反馈电路24 将充电电流的大小反馈给微控制器25,由微控制器25控制升压转换电路22输出的充电电流始终处于所设定的值,即恒流充电,保护电子设备10不被烧坏。 Under the control of the microcontroller 25, an input boost converter circuit 22 boosts the low-voltage DC converter; an output to the microcontroller 25 provides a low voltage direct current operating voltage of the power management circuit 21 performs input process regulator to the electronic device 10 is charged; sampling circuit 23 by the voltage state of the electronic device 10 is a battery feedback to the microcontroller 25, the microcontroller 25 controls the boost converter circuit 10 by determining the state of the electronic device 22 in the battery charging current output size; then back through the feedback circuit 24 of the charging current magnitude of the current to the microcontroller 25, the microcontroller 25 controls the charging current output from boost converter 22 is always set value, i.e., constant current charging, protected the electronic device 10 is not burned.

其中,微控制器25包括20个引脚;其1脚接地;其频率校准端2脚和3 脚之间连接有一校准电阻R1;其复位端4脚连接有一复位电路251;其显示控制端7、 8脚连接有一显示电路252;其输出端13脚连接至升压转换电路22的控制端;其电流反馈端14脚连接至电流反馈电路24的输出端;其电压采样端17连接至电压采样电路23的输出端;其电源输出端20脚连接有一滤波电容Cl;其它的引脚5、 6、 9、 10、 11、 12、 15、 16、 18、 19均悬空不4妻。 Wherein, the microcontroller 25 comprises a pin 20; pin 1 which is grounded; a calibration resistor R1 between frequency calibration terminal 2 and the pin 3 connected to pin; reset terminal pin 4 is connected to a reset circuit 251; display control terminal 7 , 8 pin connected to a display circuit 252; an output terminal 13 pins connected to a control terminal of the boost converter circuit 22; the current feedback terminal pin 14 connected to the current output of the feedback circuit 24; the voltage sampling end 17 is connected to the voltage sampling the output of circuit 23; the power output pin 20 is connected to a filter capacitor Cl; other pins 5, 6, 9, 10, 11, 12, 15, 16, 18, 19 are vacant not 4 wife.

作为本实用新型的一个实施例,复位电路251包括电阻R2和电容C2,电容C2的一端通过电阻R2连接至微控制器25的电源输入端20脚,还连接至微控制器的复位端4脚;另一端接地。 As a practical embodiment of this new embodiment, the reset circuit 251 comprises a resistor R2 and capacitor C2, one end of the capacitor C2 is connected through a resistor R2 to the microcontroller power supply input terminal 25 of the pin 20, is also connected to the reset terminal of the microcontroller 4 feet ; ground.

作为本实用新型的另一个实施例,显示电路252包括至少一个发光二极管(Light Emitting Diode, LED ) , LED通过电阻连4妻至孩i控制器25的显示控制端。 As a further novel embodiment of the present invention, a display circuit 252 includes at least one light emitting diode (Light Emitting Diode, LED), LED 4 is connected via a resistor to the display control terminal wife child controller 25 i. 图中示出了两个LED,其中LED1的一端通过电阻R3连接至耀:控制器25 的显示控制端7脚,另一端接地;LED2的一端通过电阻R4连接至微控制器25的显示控制端8脚,另一端接地。 Figure shows two the LED, LED1 wherein the one end is connected through a resistor R3 to Yao: a display control pin 7 of the controller 25, the other end grounded; LED2 is connected at one end to the display control of the microcontroller 25 via a resistor R4 8 feet, the other end.

在本实用新型实施例中,升压转换电路22包括:储能元件、控制储能元件工作的第一三极管Ql、以及驱动第一三极管'Ql工作状态—的第二三极管Q2; 其中,储能元件连接至升压转换电路22的输入端与输出端之间,第一三极管Ql的基极连接至升压转换电路22的输入端,其集电极连接至升压转换电路22 的输出端,其发射极接地;第二三极管Q2的基极连接至微控制器25的输出端, 集电极连接至第一三极管Ql的基极,发射极接地。 In the embodiment of the present invention, the boost converter circuit 22 includes: an energy storage element, the storage control of the first transistor Ql, the work element, and a first drive transistor 'Ql operating state - a second transistor Q2; wherein the energy storage element connected between the input terminal and the output terminal of the boost converter circuit 22, the base electrode of the first transistor Ql is connected to the input of the boost converter circuit 22, a collector connected to the boost converting the output of the circuit 22, whose emitter is grounded; a second transistor Q2 are connected to the output of the microcontroller 25, the collector of the first transistor Ql is connected to the base, the emitter is grounded. 作为本实用新型的一个实施例,储能元件包括二极管Dl和电感Ll, 二极管Dl和电感Ll串联连接至升压转换电路22的输入端与输出端之间。 As a new practical embodiment of the present, including the energy storage element between the input terminal and the output terminal of the diode Dl, the inductor Ll, the diode Dl, the inductor Ll is connected in series to the boost converter circuit 22 in FIG.

作为本实用新型的一个实施例,升压转换电if各22还包括电阻R5、 R6、 R7 以及电容C3;电阻R5的一端连接至第一三极管Ql的基极,另一端通过电容C3接地;电阻R6的一端连接至第二三极管Q2的基极,另一端连接至孩1控制器的输出端13脚;电阻R7的一端连接至第二三极管Q2的基极,另一端接地。 As a practical embodiment of the present novel embodiment, if each of the boost converter 22 further comprises an electrical resistance R5, R6, R7 and a capacitor C3; yl end of the resistor R5 is connected to a first electrode of the transistor Ql, and the other end is grounded via the capacitor C3 ; end of the resistor R6 is connected to the base of the second transistor Q2, and the other end connected to an output pin 13 of the controller 1 child; end of the resistor R7 is connected to the base of the second transistor Q2, the other end .

在本实用新型实施例中,电压采样电路23包括电阻R8、 R9、 R10以及电容C4,电阻R8的一端连接至升压转换电路22的输出端,另一端通过电阻R9 接地,另一端还通过电阻R10连接至微控制器的电压采样端17脚;电容C4的一端连接至微控制器的电压采样端17脚,另一端接地。 In the embodiment of the present invention, a voltage sampling circuit 23 comprises resistors R8, R9, R10 and a capacitor C4, one end of the resistor R8 is connected to the output terminal of the boost converter circuit 22, and the other end is grounded through a resistor R9, and the other end through a resistor R10 is connected to the microcontroller 17 pin voltage sampling end; end of the capacitor C4 is connected to the voltage sampling pin of the microcontroller 17, and ground.

在本实用新型实施例中,电流反馈电路24包括电阻Rll、 R12以及电容C5,电容C5的一端连接至微控制器的电流反馈端14脚,还通过电阻Rll连接至升压转换电路22的输出端,另一端接地;电阻R12的一端连接至升压转换电路22的输出端,另一端接地。 In the embodiment of the present invention, the current feedback circuit 24 includes a resistor Rll, R12 and a capacitor C5, one end of the capacitor C5 is connected to a current feedback terminal 14 of the microcontroller pins, also connected to the output of the boost converter circuit 22 via a resistor Rll end, and another end grounded; boost converter 22 is connected to the output terminal of one end of the resistor R12, the other end grounded.

在本实用新型实施例中,电源管理电路21包括第三三极管Q3、稳压器U1、 第一电容C6、以及第一电阻R13、第二电阻R14、第三电阻R15、第四电阻R16;稳压器U1的输出端1连接至第三三极管Q3的基极,其输入端2接地, 其调整端3通过第四电阻R16接地,其调整端3还通过第三电阻R15连接至第三三极管Q3的发射极,其调整端3还通过第一电容C6、第二电阻R14连接至第三三极管Q3的集电极;第三三极管Q3的集电极还通过第一电阻Rl3连接至升压转换电路22的输入端,其发射极连接至微控制器25的电源输入端20脚。 In the embodiment of the present invention, the power management circuit 21 includes a third transistor Q3, voltage regulator U1, a first capacitor C6, and a first resistor R13, a second resistor R14, the third resistor R15, a fourth resistor R16 ; regulator output U1 is connected to a base of the third transistor Q3, to ground the input terminal 2, terminal 3 which adjusts the ground through a fourth resistor R16, which adjusts the third terminal 3 is further connected through resistor R15 to emitting a third transistor Q3 is that the first adjustment terminal 3 through capacitor C6, a second resistor R14 connected to the collector of the third transistor Q3; collector of the third transistor Q3 through a first Rl3 resistor connected to the input of the boost converter circuit 22, its emitter connected to the microcontroller power supply input terminal 25 of the pin 20. 作为本实用新型的一个实施例,电源管理电路21还包括电容C7,第三三极管Q3的发射^?l还通过该电容C7接地。 As a new practical embodiment of the present, the power management circuit embodiment 21 further comprising transmitting a capacitor C7, the third transistor Q3 ^? L is grounded through the capacitor C7.

本实用新型实施例提供的升压型充电控制电路的工作原理描述如下:电源管理电路21将输入的直流低电压进行稳压处理后输出,给微控制器25提供工作电压;微控制器25开始工作,在其内部时钟的控制下,微控制器25先接收电压采样电路23输出的反馈电压信号,进行处理后输出第一控制信号,并控制升压转换电路22输出的充电电流的大小;然后,微控制器25再接收电流反馈电路24输出的反馈电流信号,进行处理后输出第二控制信号,并控制升压转换电路22输出的充电电流为设定的电流值,从而采取恒流对电子设备10中的电池充电,并通过显示电路252中的LED进行指示。 It works boost charge control circuit according to the present invention provided by the embodiment described as follows: the low-voltage DC power management circuit 21 outputs inputted regulated process, the microcontroller 25 to provide operating voltage; the microcontroller 25 starts work, under the control of an internal clock, first microcontroller 25 receives the feedback voltage signal output from the voltage sampling circuit 23, a first post-processing the output control signal, and controls the charging current of the boost converter output circuit 22; and outputting a second control signal, the microcontroller 25 then receives the feedback current signal outputted from the feedback circuit 24, processed, and controls the charging current of the boost converter circuit 22 outputs a current set value, so as to take a constant current electron the battery charging device 10, and is indicated by the display circuit 252 LED.

当微控制器25开始工作时,先通过电压采样电路23对电子设备10中电池的电压进行采样,通过采样电压判断电池的状态:(1 )若检测到没有电池,微控制器25不输出控制信号,则升压转换电路22不输出充电电流,同时显示电路252的指示状态为没有电池;(2)若检测到电池的电压低于IV,微控制器25输出第一控制信号控制升压转换电路22输出小脉冲电流,并对电池进行预充电,直至电池的电压恢复正常;因为正常电池的电压大于IV,若电池被过放电或存放时间过长,则电压将小于1V,此时的电池若使用大电流充电会损坏电池甚至发生危险,因此需要采用小脉沖电流预充,将电池的电压充电到大于IV; (3)若检测到电池的电压正常,微控制器25输出第一控制信号控制升压转换电路22输出大电流充电,同时显示电^各252的指示状态为正常充电。 When the microcontroller 25 starts working, the electronic device 10 to the voltage of the battery is sampled by voltage sampling circuit 23, sampling voltage by determining the state of a battery: (1) if the battery is not detected, the microcontroller 25 does not output the control signal, then the boost converter circuit 22 does not output the charging current, while indicating a display status of the battery circuit 252 is not; (2) if the detected voltage of the battery is less than IV, 25 a first output of the microcontroller to control the boost converter control signal small pulse current output circuit 22, and the pre-charge the battery until the battery voltage returns to normal; for IV greater than the normal voltage of the battery, if the battery is over-discharged or stored for too long, then the voltage will be less than 1V, the battery case the use of high current charging will damage the battery or even dangerous, requiring the use of small current pre-charge pulse, the voltage of the battery charged to more than IV; (3) if the detected voltage of the battery is normal, the microcontroller 25 outputs the first control signal the control circuit 22 outputs the boost converter high current charging, while indicating the state of each display electrode 252 ^ for normal charging. 当电池充满时,微控制器25调整输出的控制信号,控制升压转换电路22输出补充充电电流,同时显示电^各252的指示状态为充满。 When the battery is fully charged, the microcontroller 25 to adjust the control signal output of the boost converter control circuit 22 outputs a charging current is added, while indicating the state of each display electrode 252 ^ is full.

当电压采样电路23釆样的电压满足以下任何一个条件时,微控制器25控制升压转换电路22不输出充电电流,结束充电。 When preclude any voltage sampling circuit 23 samples a voltage satisfy the following conditions, the microcontroller 25 controls the boost converter circuit 22 does not output the charging current, the charging is ended. 条件l:电池的电压达到设定的最大值;条件2:充电时间达到设定的最大值;条件3:电池的电压或者充电时间达到根据电池特性设定的限值;条件4:电池电压的负变化量达到了设定值;其中设定值是根据电池的节数设定的。 Conditions L: voltage of the battery reaches a set maximum value; Condition 2: the charging time reaches a set maximum value; Condition 3: or a charging voltage of the battery reaches the set time limit in accordance with battery characteristic; Condition 4: battery voltage a negative change amount has reached the set value; wherein the set value is set according to the number of batteries.

在充电的过程中,电流反馈电路24将升压转换电路22输出的充电电流反馈给微控制器25,微控制器25根据反馈的充电电流调制输出的第二控制信号的占空比,从而控制升压转换电路22输出的充电电流为设定的电流值,即恒流充电,保护电子设备IO及其电池不被损坏。 In the charging process, the current feedback circuit 24 to the boost converter circuit 22 outputs a charging current is fed back to the microcontroller 25, the microcontroller 25 according to the duty control signal of the second charging current feedback modulated output, thereby controlling charging current boost converter 22 outputs a current set value, i.e., constant current charging, the battery and protect electronic equipment from being damaged IO.

本实用新型实施例提供的升压型充电控制电路采用微控制器控制升压转换电路,通过电压釆样电路反馈的电压信号检测电子设备中电池的状态,对于充满的电池,及时关断充电电流,并以小电流补充充电;对于电压〗氐的电池,先进行预充电,待电池的电压上升至正常值时再进行大电流充电;这种精确、智能的控制,使得电子设备以及电池得到了有效的保护,从而延长了电子设备及其电池的使用寿命;同时节约了电路成本。 Boost charging control circuit embodiment of the present invention to provide a micro-controller controls the boost converter circuit, the feedback voltage signal sampling circuit detects the state of the electronic device in the battery voltage by Bian, for a fully charged battery, the charging current is turned off promptly , and a small trickle charge current; Di〗 for battery voltage, the first pre-charge voltage of the battery to be raised to normal again when large current charging; this accurate, intelligent control, enable the electronic device and the battery has been effective protection, thus extending the life of the battery and the electronic device; while saving circuit cost.

以上所述仅为本实用新型的较佳实施例而已,并不用以限制本实用新型, 凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本实用新型的保护范围之内。 The above preferred embodiment of the present invention are illustrative only but are not intended to limit the present disclosure, any modifications can be made within the spirit and principle of the invention, equivalent replacements and improvements should be included in the present utility within the scope of protection.

Claims (10)

1、一种升压型充电控制电路,其特征在于,所述升压型充电控制电路包括:升压转换电路,将输入的直流低电压信号进行升压转换后输出给电子设备;电压采样电路,其输入端与所述升压转换电路的输出端连接,将所述升压转换电路输出的电压信号反馈输出;电流反馈电路,其输入端与所述升压转换电路的输出端连接,将所述升压转换电路输出的电流信号反馈输出;电源管理电路,将输入的直流低电压信号进行稳压后输出;以及微控制器,其电源输入端连接至所述电源管理电路的输出端;其电压采样端连接至所述电压采样电路的输出端,接收所述电压采样电路输出的反馈电压信号,进行处理后输出第一控制信号,控制所述升压转换电路输出的充电电流的大小;其电流反馈端连接至所述电流反馈电路的输出端,接收所述电流反馈电路输出的反馈电流 A boost charge control circuit, wherein the boost-type charge control circuit comprising: a boost converter, a low DC voltage signal input after the boost converter output to the electronic device; voltage sampling circuit whose input and output terminals of the boost converter circuit, the boost converter output voltage feedback output signal; current feedback circuit, the input and output terminals of the boost converter circuit is connected to the the boost converter circuit current signal output from the feedback output; power management circuit, the low-voltage DC input signal is output after the regulator; and a microcontroller, the power input is connected to the output of the power management circuitry; after sampling the voltage output terminal is connected to the voltage sampling circuit, the feedback voltage signal sampling circuit receiving the output voltage, a first output control signal processing, controls the charging current of the boost converter circuit output; its current feedback terminal is connected to the current output terminal of the feedback circuit, the feedback circuit receiving the output of said current feedback current 信号,进行处理后输出第二控制信号,控制所述升压转换电路输出的充电电流为设定的电流值。 Signal processing after outputting the second control signal controlling the charging current of the boost converter circuit output to the set current value.
2、 如权利要求1所述的升压型充电控制电路,其特征在于,所述升压转换电路包括:储能元件;控制所述储能元件工作的第一三极管;以及控制所述第一三极管工作状态的第二三极管;所述储能元件连接至所述升压转换电路的输入端与输出端之间,所述第一三极管的基极连接至所述升压转换电路的输入端,其集电极连接至所述升压转换电路的输出端,其发射极接地;所述第二三极管的基极连接至所述微控制器的输出端,集电极连接至所述第一三极管的基极,发射极接地。 2. The boost charge control circuit as claimed in claim 1, wherein the boost converter circuit comprising: a storage element; controlling the energy storage element of the first transistor working; and controlling the a first transistor a second transistor operating state; between the boost converter circuit is connected to the input terminal and the output terminal of said energy storage element, the first transistor is connected to the base input terminal of the boost converter circuit, its collector connected to an output terminal of the boost converter circuit, whose emitter is grounded; base electrode of the second transistor is connected to the output of the microcontroller, sets electrode is connected to the base electrode of the first transistor, the emitter is grounded.
3、 如权利要求1所述的升压型充电控制电路,其特征在于,所述微控制器的复位端连接一复位电路。 3. The boost charge control circuit as claimed in claim 1, characterized in that the reset terminal of the microcontroller is connected to a reset circuit.
4、 如权利要求1所述的升压型充电控制电路,其特征在于,所述微控制器的频率校准端连接一校准电阻。 4, as claimed in claim 1, said boost charge control circuit, wherein the frequency calibration terminal of the microcontroller is connected to a calibration resistor.
5、 如权利要求1所述的升压型充电控制电路,其特征在于,所述微控制器的电源输入端连接一滤波电容。 5, as claimed in claim 1, said boost charge control circuit, wherein the power input terminal of the microcontroller is connected to a filter capacitor.
6、 如权利要求1所述的升压型充电控制电路,其特征在于,所述微控制器的显示控制端连接一显示电路。 6, as claimed in claim 1, said boost charge control circuit, wherein the display control terminal of the microcontroller is connected to a display circuit.
7、 如权利要求6所述的升压型充电控制电路,其特征在于,所述显示电路包括至少一个LED,所述LED电连接至所述微控制器的显示控制端。 7, as claimed in claim 6, said boost charge control circuit, wherein the display circuit comprises at least one LED, the LED coupled to the microcontroller display control terminal.
8、 如权利要求1所述的升压型充电控制电路,其特征在于,所述电源管理电路包4舌:第三三极管、稳压器、第一电容以及第一电阻、第二电阻、第三电阻、第四电阻;所述稳压器的输出端连接至所述第三三极管的基极,其输入端接地,其调整端通过所述第四电阻*接地,其调整端还通过所述第三电阻连接至所述第三三极管的发射极,其调整端还通过所述第一电容、所述第二电阻连接至所述第三三极管的集电极;所述第三三极管的集电极还通过所述第一电阻连接至所述升压转换电路的输入端,其发射极连接至所述微控制器的电源输入端。 8. The boost charge control circuit as claimed in claim 1, wherein said power management circuit pack tongue 4: a third transistor, voltage regulator, a first capacitor and a first resistor, a second resistor , a third resistor, a fourth resistor; output of the regulator is connected to the third base of the transistor, which input is grounded, the adjustment end is grounded through the fourth resistor *, the adjustment ends further connected to the third transistor through the third emitter resistor, through which an end of the first adjusting capacitor and said second resistor connected to the collector of said third transistor; the the collector of said third transistor is further connected via a resistor to the first input terminal of the boost converter circuit, its emitter connected to the power input of the microcontroller.
9、 如权利要求8所述的升压型充电控制电路,其特征在于,所述第三三极管的发射极通过一电容^l妄地。 9, as the boost charge control circuit according to claim 8, characterized in that the emitter of the third transistor via a capacitor to jump ^ l.
10、 一种采用权利要求1的升压型充电控制电路充电的电子设备。 10. A use of a boost charge control circuit for charging an electronic device as claimed in claim.
CNU2008200948860U 2008-06-16 2008-06-16 Voltage-boosting type charge control circuit and electronic device CN201226449Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101720148A (en) * 2009-07-21 2010-06-02 海洋王照明科技股份有限公司;深圳市海洋王照明工程有限公司 LED driving circuit and LED device
CN101835312A (en) * 2010-05-10 2010-09-15 海洋王照明科技股份有限公司;深圳市海洋王照明工程有限公司 LED drive control circuit
CN103066666A (en) * 2013-01-22 2013-04-24 矽力杰半导体技术(杭州)有限公司 Boost type battery charging management system and control method thereof
CN105990879A (en) * 2016-07-06 2016-10-05 歌尔股份有限公司 Device for battery charging and electronic device
CN106411126A (en) * 2016-11-28 2017-02-15 扬州工业职业技术学院 Portable laser boost power supply drive module

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101720148A (en) * 2009-07-21 2010-06-02 海洋王照明科技股份有限公司;深圳市海洋王照明工程有限公司 LED driving circuit and LED device
CN101720148B (en) * 2009-07-21 2013-10-09 海洋王照明科技股份有限公司 LED driving circuit and LED device
CN101835312A (en) * 2010-05-10 2010-09-15 海洋王照明科技股份有限公司;深圳市海洋王照明工程有限公司 LED drive control circuit
CN101835312B (en) * 2010-05-10 2014-03-26 海洋王照明科技股份有限公司 LED drive control circuit
CN103066666A (en) * 2013-01-22 2013-04-24 矽力杰半导体技术(杭州)有限公司 Boost type battery charging management system and control method thereof
TWI492483B (en) * 2013-01-22 2015-07-11 Silergy Corp Step - up battery charge management system and its control method
CN103066666B (en) * 2013-01-22 2015-08-26 矽力杰半导体技术(杭州)有限公司 A kind of booster type battery charging management system and control method thereof
US9391467B2 (en) 2013-01-22 2016-07-12 Silergy Semiconductor Technology (Hangzhou) Ltd Step-up battery charging management system and control method thereof
CN105990879A (en) * 2016-07-06 2016-10-05 歌尔股份有限公司 Device for battery charging and electronic device
CN106411126A (en) * 2016-11-28 2017-02-15 扬州工业职业技术学院 Portable laser boost power supply drive module
CN106411126B (en) * 2016-11-28 2018-12-25 扬州工业职业技术学院 A kind of portable laser booster power drive module

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