WO2017020782A1 - 一种电池充放电控制电路及电池充放电*** - Google Patents

一种电池充放电控制电路及电池充放电*** Download PDF

Info

Publication number
WO2017020782A1
WO2017020782A1 PCT/CN2016/092365 CN2016092365W WO2017020782A1 WO 2017020782 A1 WO2017020782 A1 WO 2017020782A1 CN 2016092365 W CN2016092365 W CN 2016092365W WO 2017020782 A1 WO2017020782 A1 WO 2017020782A1
Authority
WO
WIPO (PCT)
Prior art keywords
mos transistor
resistor
battery
circuit
voltage
Prior art date
Application number
PCT/CN2016/092365
Other languages
English (en)
French (fr)
Inventor
骆锋
田超
姜启荣
罗桂冬
何维
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017020782A1 publication Critical patent/WO2017020782A1/zh

Links

Images

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
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present application relates to, but is not limited to, the field of circuits, and in particular, to a battery charge and discharge control circuit and a battery charge and discharge system.
  • the charge and discharge control of the backup battery in the industry is mainly realized by a relay.
  • the main function of the battery is that when the battery discharge voltage is lower than a certain voltage value, the relay contacts are disconnected and the battery stops discharging, thus preventing overdischarge and damaging the battery.
  • the relay control battery charge and discharge has the following disadvantages: First, the relay is bulky and costly; second, the contact of the relay is not resistant to current, easy to burn, so the reliability is not high; third is the contact resistance of the relay contact Large, so the power loss during charging and discharging is large; Fourth, only the discharge undervoltage protection function can be realized, the charging cannot be effectively controlled, and the battery can not be hot swapped.
  • the utility model provides a battery charging and discharging control circuit and a battery charging and discharging system, which solves the problem that the charging and discharging control of the backup battery cannot be realized in the related art.
  • a battery charge and discharge control circuit comprising: a switch control component, a MOS transistor circuit and a first resistor for providing a turn-on voltage for the MOS transistor circuit; the switch control component connected to the MOS transistor circuit for controlling Conducting the first MOS transistor and the second MOS transistor in the MOS transistor circuit or Turning off; the MOS transistor circuit includes the first MOS transistor and the second MOS transistor, and two output pins of the first MOS transistor are respectively connected to two ends of the first resistor, The other output pin is grounded; the two output pins of the second MOS transistor are respectively connected to both ends of the first resistor, and the other output pin is connected to the battery; the first resistor is connected to the The switch control component.
  • the battery charge and discharge control circuit further includes: a safety component for providing protection for the circuit, the safety component having one end connected to the second MOS tube and the other end connected to the battery.
  • the battery charge and discharge control circuit further includes: a current detecting circuit, one end of the current detecting circuit is connected to the first MOS tube, and the other end is grounded for collecting a current signal.
  • the current detecting circuit comprises: a second resistor.
  • the switch control component includes: an optocoupler connected to the triode and the MOS transistor circuit for controlling conduction or deactivation of the first MOS transistor and the second MOS transistor; a triode connected to the third resistor and the optocoupler for receiving a turn-on voltage through the third resistor; the third resistor for providing a turn-on voltage to the triode.
  • the switch control component includes: an optocoupler connected to the third MOS transistor and the MOS transistor circuit, configured to control whether the first MOS transistor and the second MOS transistor are turned on or off
  • the third MOS transistor is connected to the third resistor and the optocoupler for receiving a turn-on voltage through the third resistor; the third resistor is configured to provide a guide for the third MOS transistor Through voltage.
  • the switch control component includes: a relay connected to the triode and the MOS transistor circuit for controlling conduction or deactivation of the first MOS transistor and the second MOS transistor; the triode, Connected to a third resistor and the relay for receiving a turn-on voltage through the third resistor; the third resistor for providing a turn-on voltage to the transistor.
  • the switch control component includes: a relay connected to the third MOS transistor and the MOS transistor circuit, configured to control whether the first MOS transistor and the second MOS transistor are turned on or off; a third MOS transistor connected to the third resistor and the relay for receiving a turn-on voltage through the third resistor; the third resistor for providing a turn-on voltage for the third MOS transistor.
  • the MOS transistor circuit is connected to a negative electrode of the battery.
  • a battery charging and discharging system includes: the battery charging and discharging control circuit.
  • a battery charge and discharge control circuit comprising: a switch control component, a MOS transistor circuit and a first resistor for providing a turn-on voltage for the MOS transistor circuit; and a switch control component connected to the MOS a tube circuit for controlling conduction or deactivation of the first MOS transistor and the second MOS transistor in the MOS transistor circuit;
  • the MOS transistor circuit includes a first MOS transistor and a second MOS transistor, and two outputs of the first MOS transistor The pins are respectively connected to both ends of the first resistor, and the other output pin is grounded; two output pins of the second MOS transistor are respectively connected to both ends of the first resistor, and the other output pin is connected to the battery
  • the first resistor is connected to the switch control assembly.
  • FIG. 1 is a block diagram showing the structure of a battery charge and discharge control circuit according to an embodiment of the present invention
  • FIG. 2 is a general plan diagram of a system for charging and discharging a backup battery of an embodiment of the present invention
  • FIG. 3 is a schematic view showing the working principle of a backup battery charging and discharging control circuit according to an embodiment of the present invention
  • FIG. 4 is a first circuit diagram of an embodiment of the present invention using an optocoupler as a switch control device;
  • FIG. 5 is a second circuit diagram of an embodiment of the present invention using an optocoupler as a switch control device
  • FIG. 6 is a third circuit diagram of an embodiment of the present invention using an optocoupler as a switch control device
  • Figure 7 is a circuit diagram of a relay as a switch control device in accordance with an embodiment of the present invention.
  • FIG. 1 is a structural block diagram of a battery charging and discharging control circuit according to an embodiment of the present invention.
  • the battery charging and discharging control circuit includes: a switch control.
  • the first MOS transistor and the second MOS transistor are turned on or off in the MOS transistor circuit 22;
  • the MOS transistor circuit 22 includes a first MOS transistor and a second MOS transistor, and the two output pins of the first MOS transistor are respectively
  • the first resistor 23 is connected at both ends, and the other output pin is grounded;
  • the two output pins of the second MOS transistor are respectively connected to both ends of the first resistor 23, and the other output pin is connected to the battery;
  • the above-mentioned device included in the present invention solves the problem that the charge and discharge control of the backup battery cannot be realized in the related art, and further realizes the control of charging and discharging of the backup battery.
  • the battery charge and discharge control circuit further includes: a fuse assembly for providing protection to the circuit, the fuse assembly having one end coupled to the second MOS transistor and the other end coupled to the battery. In order to make the battery short circuit, it can be quickly disconnected to prevent the current from being too dangerous.
  • the battery charge and discharge control circuit further includes: a current detecting circuit having one end connected to the first MOS transistor and the other end grounded for collecting a current signal.
  • the current sensing circuit described above can be a second resistor.
  • the switch control component can have various implementations.
  • the switch control component includes: an optocoupler connected to the triode and the MOS transistor circuit for controlling the first MOS transistor and the second MOS The transistor is turned on or off; the transistor is connected to the third resistor and the optocoupler for receiving a turn-on voltage through the third resistor; the third resistor is configured to provide a turn-on voltage for the transistor.
  • the switch control component includes: an optocoupler connected to the third MOS transistor and the MOS transistor circuit for controlling whether the first MOS transistor and the second MOS transistor are turned on or off
  • the third MOS transistor is connected to the third resistor and the optocoupler for receiving the turn-on voltage through the third resistor; the third resistor is configured to provide a turn-on voltage for the third MOS transistor.
  • the switch control component includes: a relay connected to the triode and the MOS transistor circuit for controlling conduction or deactivation of the first MOS transistor and the second MOS transistor; the triode being connected And a relay for receiving a turn-on voltage through the third resistor; the third resistor is configured to provide a turn-on voltage for the transistor.
  • the switch control component includes: a relay connected to the third MOS transistor and the MOS transistor circuit for controlling whether the first MOS transistor and the second MOS transistor are turned on or off; a third MOS transistor connected to the third resistor and the relay for receiving a turn-on voltage through the third resistor; the third resistor for providing a turn-on voltage for the third MOS transistor.
  • the MOS transistor circuit is coupled to the negative terminal of the battery.
  • a battery charging and discharging system comprising: the battery charging and discharging control circuit described above.
  • the main purpose of the embodiments of the present invention is to provide a backup battery charging and discharging control circuit that has the advantages of miniaturization, intelligence, high efficiency, high efficiency, and high reliability.
  • FIG. 2 is a schematic diagram of a system of a backup battery charging and discharging control circuit according to an embodiment of the present invention.
  • the overall scheme of the battery backup and discharge control circuit of the present embodiment is shown in FIG. 2: mainly by the following functions Module composition: AC-DC AC-DC power module, system load, backup battery, battery monitoring module, single-chip control module, battery charge and discharge control circuit module.
  • the main function of the AC-DC power module is to convert the utility power into the system load and the voltage required by the battery to supply power to the system load, and at the same time to charge the backup battery;
  • the system load is each function block that needs to be powered in the entire communication system;
  • the backup battery can continue to supply power to the load through the discharge after the mains power is turned off, so that the normal operation of the system can be maintained;
  • the main function of the battery monitoring module is to monitor the voltage, temperature, presence and reverse of the battery.
  • the MCU control module is responsible for monitoring the battery charge and discharge in addition to controlling the AC-DC power supply module;
  • the battery charge and discharge control circuit module is the execution unit of the battery charge and discharge control, and its main function is to accept the single-chip control
  • the control signal of the system realizes the purpose of battery charge and discharge control.
  • FIG. 3 is a schematic diagram of the working principle of the charging and discharging control circuit of the backup battery of the present invention.
  • the working principle of the battery charging and discharging control circuit is shown in FIG. 3: the charging and discharging control circuit is composed of the following parts: a switch and a control circuit switch, The top MOS: VT1 and VT2, and the resistor resistor and fuse connected to the GS pole of the top MOS.
  • the working principle diagram of the battery charge and discharge control circuit has the following signals: 1) VCC: an auxiliary power supply voltage provided by the power supply module, the function of which is to provide the driving voltage for the top MOS tube of the control circuit; 2) battery-: battery Negative, the battery diagram on the working principle diagram is connected to the top MOS and the system ground GND. In practice, the circuit can also be connected in series with a fuse and current sense resistor; 3) GND: power output ground and system ground.
  • the DS poles of VT1 and VT2 will change from the off state to the saturated conduction state, so that the battery can perform the charging and discharging functions.
  • the switch and the control circuit switch are in the off state, no current flows through the resistance resistor, so the voltage is 0V, that is, the GS voltage of the MOS transistors VT1 and VT2 is 0V, so the two MOSs are in the off state, and thus There will be current flowing through the DS poles of the two MOS transistors.
  • the power supply cannot charge the battery, and the battery cannot discharge the system.
  • the switch and control circuit switch is represented by two contacts in the working principle diagram.
  • the circuit uses some electronic devices to jointly realize the switching function, and the turn-on and turn-off are controlled by the single-chip control signal.
  • FIG. 2 is a schematic diagram of a system of a backup battery charging and discharging control circuit according to an embodiment of the present invention.
  • the entire system requires an AC-DC power module, a single-chip control module, a battery monitoring module, a charge and discharge control circuit module, and a backup battery and other functional modules. Cooperate with each other to realize intelligent control of battery charge and discharge.
  • FIG. 3 is a schematic diagram of the working principle of the backup battery charging and discharging control circuit according to the embodiment of the present invention.
  • the switch and the control circuit switch are turned on and off to control the on and off of the top MOS transistors VT1 and VT2, thereby realizing battery charging and discharging control. the goal of.
  • One is to use the optocoupler as the switch control device. This scheme has three circuit connections, as shown in Figure 4, Figure 5 and Figure 6.
  • the other solution is to use the relay. Take the switch control device, the circuit connection is shown in Figure 7.
  • the first method is shown in Figure 4. This method is suitable for the case where the VCC size and the operating voltage of the microcontroller are inconsistent.
  • the negative battery of the battery - and the circuit connected to the top MOS transistors VT1 and VT2 are connected in series with a fuse FU1 and a resistor R6.
  • the fuse FU1 can be quickly disconnected to prevent a current from being excessively generated and causing a fire.
  • the resistor R6 is a current detecting resistor, and the current signal BAT_IS of the parameter is transmitted to the single chip microcomputer and other control circuits.
  • Transistor VT3 When BATCTL is high, Transistor VT3 is driven by resistor R1, so that VCC, the body diode of the optocoupler's primary side and the collector of VT3 form a current loop. The diode in the optocoupler will have current flowing through it, resulting in the internal triode of the optocoupler's secondary side. Saturated conduction. Therefore, a current flows through the PIN3 and PIN4 pins of the photocoupler D1, and the body diode flowing through the resistor R5 and the optocoupler VT1 flows back to GND. Thus, the GS voltages of the top MOS transistors VT1 and VT2 are turned on more than the threshold voltage, and the battery can be charged and discharged.
  • the transistor VT3 When BATCTL is low, the transistor VT3 is in the off state, and the diode in the primary side of the optocoupler D1 will not have current flowing, so it is also in the off state.
  • the resistor R5 also does not have a current flowing, so the GS voltage to the top MOS transistors VT1 and VT2 is 0V, and thus is also in an off state, so the battery can neither be charged nor discharged.
  • the VT3 transistor can also be replaced by a MOS tube.
  • the 1 pin of VT3 corresponds to the G pole of the MOS tube
  • the 2 pin corresponds to the S pole of the MOS tube
  • the 3 pin corresponds to the D pole of the MOS tube.
  • FIG. 5 is a second circuit diagram of the embodiment of the present invention using an optocoupler as a switch control device.
  • the method is to directly drive the optocoupler D1 by using a single chip microcomputer, and is suitable for the case where the VCC voltage and the working voltage of the single chip are the same.
  • BATCTL is low, current will flow through the resistor R3 and the diode in the primary side of the optocoupler D1, and the secondary side of the optocoupler D1 will be in a saturated conduction state. Therefore, a current flows through the PIN3 and PIN4 pins of the photocoupler D1, and the body diode flowing through the resistor R5 and the optocoupler VT1 flows back to GND.
  • the GS voltages of the top MOS transistors VT1 and VT2 are turned on more than the threshold voltage, and the battery can be charged and discharged.
  • BATCTL is at a high level
  • the diode in the primary side of the optocoupler D1 does not have a current flow because there is no voltage difference. Therefore, the phototransformer D1 secondary transistor is in an off state, and the resistor R5 does not have a current flowing, so the top is
  • the GS voltages of the MOS transistors VT1 and VT2 are 0 V, and thus are in an off state, so that the battery can neither be charged nor discharged.
  • FIG. 6 is a third circuit diagram of the embodiment of the present invention using an optocoupler as a switch control device, which is also used to directly drive the optocoupler D1.
  • an optocoupler as a switch control device, which is also used to directly drive the optocoupler D1.
  • BATCTL When BATCTL is high, current will flow through the resistor R3 and the diode in the primary side of the optocoupler D1, and the secondary side of the optocoupler D1 will be in a saturated conduction state. Therefore, a current flows through the PIN3 and PIN4 pins of the photocoupler D1, and the body diode flowing through the resistor R5 and the optocoupler VT1 flows back to GND. This is the top MOS tube VT1 and VT2 The GS voltage will be greater than the threshold voltage and the battery will be charged and discharged.
  • the diode in the primary side of the optocoupler D1 does not have a current flow because there is no voltage difference. Therefore, the phototransformer D1 secondary transistor is in the off state, and the resistor R5 does not have current flowing, so the top is
  • the GS voltages of the MOS transistors VT1 and VT2 are 0 V, and thus are in an off state, so that the battery can neither be charged nor discharged.
  • Fig. 7 is a circuit diagram of a relay as a switch control device according to an embodiment of the present invention. This mode is similar to the above-described first circuit connection method in that the relay K1 is used instead of the photocoupler D1.
  • transistor VT3 is turned on by resistor R1, so that VCC, the coil of relay K1 and the collector of VT3 form a current loop, and the relay coil current flows to cause the contact of the relay to close. Therefore, a current flowing through the resistor R5 and the body diode of the optocoupler VT1 flows back to GND.
  • the GS voltages of the top MOS transistors VT1 and VT2 are turned on more than the threshold voltage, and the battery can be charged and discharged.
  • transistor VT3 When BATCTL is low, transistor VT3 is in the off state, and there is no current flowing through the coil of relay K1, so the contact of relay K1 is in the off state. Since the resistor R5 thus does not have a current flowing, the GS voltage to the top MOS transistors VT1 and VT2 is 0 V, and thus is in an off state, so that the battery can neither be charged nor discharged.
  • the VT3 transistor can also be replaced by a MOS tube.
  • the 1 pin of VT3 corresponds to the G pole of the MOS tube
  • the 2 pin corresponds to the S pole of the MOS tube
  • the 3 pin corresponds to the D pole of the MOS tube.
  • a relay is often used as a control switch or a separate charge and discharge control as compared with conventional battery charge and discharge control.
  • the utility model adopts two pairs of top MOS as control switches, and has the following advantages:
  • Control is simple and reliable.
  • the control circuit device has few components, and can effectively control the whole process of charging and discharging the battery.
  • the battery charging and discharging can realize the hot plugging, anti-reverse connection and other intelligent functions, and the single chip can also be used for the battery.
  • Temperature rise, voltage, current and other conditions are monitored. If abnormal conditions occur, they can be processed in time. This not only ensures stable operation of the system, but also ensures safe use of the battery and improves battery life.
  • the MOS transistor has a small on-resistance of the DS pole, and the MOS transistor is a voltage-driven device. Therefore, the power consumption of the circuit relative to the relay is smaller during the charging and discharging process of the battery. The purpose of energy saving.
  • the electric shock of the relay is easily damaged and deteriorated due to the high temperature caused by the discharge during the turn-on and turn-off process, and the MOS tube has better impact resistance, so the service life is longer and the reliability is higher.
  • the MOS tube is smaller than the relay and can save more space.
  • a battery charge and discharge control circuit comprising: a switch control component, a MOS transistor circuit and a first resistor for providing a turn-on voltage for the MOS transistor circuit; and a switch control component connected to the MOS a tube circuit for controlling conduction or deactivation of the first MOS transistor and the second MOS transistor in the MOS transistor circuit;
  • the MOS transistor circuit includes a first MOS transistor and a second MOS transistor, and two outputs of the first MOS transistor The pins are respectively connected to both ends of the first resistor, and the other output pin is grounded; two output pins of the second MOS transistor are respectively connected to both ends of the first resistor, and the other output pin is connected to the battery
  • the first resistor is connected to the switch control assembly.

Landscapes

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

Abstract

一种电池充放电控制电路及电池充放电***。该电池充放电控制电路包括：开关控制组件(22)，MOS管电路(24)和用于为该MOS管电路(24)提供导通电压的第一电阻(26)；开关控制组件(22)连接至MOS管电路(24)，用于控制MOS管电路(24)中第一MOS管(VT1)和第二MOS管(VT2)的导通或者关断；MOS管电路(24)包括第一MOS管(VT1)和第二MOS管(VT2)，第一MOS管(VT1)中的两个输出管脚分别与该第一电阻(26)的两端连接，另一个输出管脚接地；第二MOS管(VT2)中的两个输出管脚分别与该第一电阻(26)的两端连接，另一个输出管脚与电池连接；第一电阻(26)连接至开关控制组件(22)。该电池充放电控制电路及电池充放电***能够实现对备用电池的充放电的控制。

Description

一种电池充放电控制电路及电池充放电*** 技术领域
本申请涉及但不限于电路领域，尤其涉及一种电池充放电控制电路及电池充放电***。
背景技术
在我们的日常生活中，电池经常使用在手机、手表、剃须刀等物品中。而在通信设备***中，我们也会使用一些备用电池来提高***的可靠性。正常情况下，电源给设备供电，同时还会给备用电池充电；当市电掉电时，电源会停止供电，但备用电池可以通过放电来维持***的正常工作。这样也就提高了通信***设备工作的稳定性和可靠性。
目前业界对备用电池的充放电控制主要是通过继电器来实现的。其主要实现的功能就是在电池放电电压低于某个电压值时，继电器触点断开，电池停止放电，因而可以防止出现过放电而损坏电池。但继电器控制电池的充放电有以下几个不足：一是继电器体积大，成本高；二是继电器的触点不耐电流的冲击，容易烧毁，因此可靠性不高；三是继电器触点接触电阻大，因此充放电时的功率损耗大；四是只能实现放电欠压保护功能，对充电不能进行有效控制，也不能实现电池的热插拔。
针对相关技术中，不能实现对备用电池的充放电控制的问题，还未提出有效的解决方案。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本实用新型提供了一种电池充放电控制电路及电池充放电***，解决了相关技术中不能实现对备用电池的充放电控制的问题。
一种电池充放电控制电路，包括：开关控制组件，MOS管电路和用于为所述MOS管电路提供导通电压的第一电阻；所述开关控制组件，连接至MOS管电路，用于控制所述MOS管电路中第一MOS管和第二MOS管的导通或 者关断；所述MOS管电路，包括所述第一MOS管和所述第二MOS管，所述第一MOS管中的两个输出管脚分别与所述第一电阻的两端连接，另一个输出管脚接地；所述第二MOS管中的两个输出管脚分别与所述第一电阻的两端连接，另一个输出管脚与电池连接；所述第一电阻，连接至所述开关控制组件。
可选地，所述电池充放电控制电路还包括：用于为电路提供保护的保险组件，该保险组件的一端连接至所述第二MOS管，另一端连接至所述电池。
可选地，所述电池充放电控制电路还包括：电流检测电路，所述电流检测电路的一端连接至所述第一MOS管，另一端接地，用于采集电流信号。
可选地，所述电流检测电路包括：第二电阻。
可选地，所述开关控制组件包括：光耦器，连接至三极管和所述MOS管电路，用于控制所述第一MOS管和所述第二MOS管的导通或者关断；所述三极管，连接至第三电阻和所述光耦器，用于通过所述第三电阻接收导通电压；所述第三电阻，用于为所述三极管提供导通电压。
可选地，所述开关控制组件包括：光耦器，连接至第三MOS管和所述MOS管电路，用于控制所述第一MOS管和所述第二MOS管的导通或者关断；所述第三MOS管，连接至第三电阻和所述光耦器，用于通过所述第三电阻接收导通电压；所述第三电阻，用于为所述第三MOS管提供导通电压。
可选地，所述开关控制组件包括：继电器，连接至三极管和所述MOS管电路，用于控制所述第一MOS管和所述第二MOS管的导通或者关断；所述三极管，连接至第三电阻和所述继电器，用于通过所述第三电阻接收导通电压；所述第三电阻，用于为所述三极管提供导通电压。
可选地，所述开关控制组件包括：继电器，连接至第三MOS管和所述MOS管电路，用于控制所述第一MOS管和所述第二MOS管的导通或者关断；所述第三MOS管，连接至第三电阻和所述继电器，用于通过所述第三电阻接收导通电压；所述第三电阻，用于为所述第三MOS管提供导通电压。
可选地，所述MOS管电路连接所述电池的负极。
一种电池充放电***，包括：所述的电池充放电控制电路。
通过本实用新型实施例方案，采用一种电池充放电控制电路，包括：开关控制组件，MOS管电路和用于为该MOS管电路提供导通电压的第一电阻；开关控制组件，连接至MOS管电路，用于控制MOS管电路中第一MOS管和第二MOS管的导通或者关断；MOS管电路，包括第一MOS管和第二MOS管，第一MOS管中的两个输出管脚分别与该第一电阻的两端连接，另一个输出管脚接地；第二MOS管中的两个输出管脚分别与该第一电阻的两端连接，另一个输出管脚与电池连接；第一电阻，连接至开关控制组件。解决了相关技术中不能实现对备用电池的充放电控制的问题，进而实现了对备用电池的充放电的控制。
附图概述
图1是根据本实用新型实施例的电池充放电控制电路的结构框图；
图2是本实用新型实施例备用电池充放电控制电路的***总体方案图；
图3是本实用新型实施例备用电池充放电控制电路工作原理示意图；
图4是本实用新型实施例用光耦作为开关控制器件的第一种电路图；
图5是本实用新型实施例用光耦作为开关控制器件的第二种电路图；
图6是本实用新型实施例用光耦作为开关控制器件的第三种电路图；
图7是本实用新型实施例用继电器作为开关控制器件的电路图。
本发明的实施方式
下文中将参考附图对本实用新型实施例进行说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本实用新型实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
在本实施例中提供了一种电池充放电控制电路，图1是根据本实用新型实施例的电池充放电控制电路的结构框图，如图1所示，该电池充放电控制电路包括：开关控制组件21，MOS管电路22和用于为MOS管电路提供导通电压的第一电阻23。开关控制组件21，连接至MOS管电路22，用于控制 MOS管电路22中第一MOS管和第二MOS管的导通或者关断；MOS管电路22，包括第一MOS管和第二MOS管，第一MOS管中的两个输出管脚分别与第一电阻23的两端连接，另一个输出管脚接地；第二MOS管中的两个输出管脚分别与第一电阻23的两端连接，另一个输出管脚与电池连接；第一电阻23，连接至开关控制组件21。
通过本实用新型包括的上述器件解决了相关技术中不能实现对备用电池的充放电控制的问题，进而实现了对备用电池的充放电的控制。
在一个可选实施例中，电池充放电控制电路还包括：用于为电路提供保护的保险组件，该保险组件的一端连接至该第二MOS管，另一端连接至该电池。以便于在电池短路的情况下，可以迅速断开，防止电流过大造成危险。
在一个可选实施例中，电池充放电控制电路还包括：电流检测电路，该电流检测电路的一端连接至第一MOS管，另一端接地，用于采集电流信号。在另一个可选实施例中，上述的电流检测电路可以是第二电阻。
上述开关控制组件可以有多种实现方案，在一个可选实施例中，开关控制组件包括：光耦器，连接至三极管和该MOS管电路，用于控制该第一MOS管和该第二MOS管的导通或者关断；该三极管，连接至第三电阻和该光耦器，用于通过该第三电阻接收导通电压；该第三电阻，用于为该三极管提供导通电压。在另一个可选实施例中，开关控制组件包括：光耦器，连接至第三MOS管和该MOS管电路，用于控制该第一MOS管和该第二MOS管的导通或者关断；该第三MOS管，连接至第三电阻和该光耦器，用于通过该第三电阻接收导通电压；该第三电阻，用于为该第三MOS管提供导通电压。在又一个可选实施例中，开关控制组件包括：继电器，连接至三极管和该MOS管电路，用于控制该第一MOS管和该第二MOS管的导通或者关断；该三极管，连接至第三电阻和该继电器，用于通过该第三电阻接收导通电压；该第三电阻，用于为该三极管提供导通电压。在另一个可选实施例中，开关控制组件包括：继电器，连接至第三MOS管和该MOS管电路，用于控制该第一MOS管和该第二MOS管的导通或者关断；该第三MOS管，连接至第三电阻和该继电器，用于通过该第三电阻接收导通电压；该第三电阻，用于为该第三MOS管提供导通电压。
在一个可选实施例中，上述MOS管电路连接该电池的负极。
根据本实用新型实施例的另一个方面，还提供了一种电池充放电***，包括：上述的电池充放电控制电路。
本实用新型实施例主要目的是提供一种具有小型化、智能化、高效节能、高可靠性等优点的备用电池充放电控制电路。
本实用新型实施例采用以下技术方案：
图2是本实用新型实施例备用电池充放电控制电路的***总体方案图，本实用新型实施例上述的备用电池充放电控制电路的***总体方案图如图2所示：主要由以下几个功能模块组成：交流-直流AC-DC电源模块、***负载、备用电池、电池监控模块、单片机控制模块、电池充放电控制电路模块。AC-DC电源模块主要功能就是把市电转换成***负载和电池所需要的电压，以便给***负载供电，同时可以给备用电池充电；***负载就是整个通信***中需要供电的每个功能板块；而备用电池在市电掉电后可以通过放电继续给负载供电，这样就可以维持***的正常运作；电池监控模块主要功能就是对电池的电压，温度，是否在位和是否接反等状态进行监测，并上报给单片机；而单片机控制模块除了控制AC-DC电源模块外，还负责对电池充放电进行监控；电池充放电控制电路模块是电池充放电控制的执行单元，其主要功能是接受单片机控制***的控制信号，实现电池充放电控制的目的。
图3是本实用新型备用电池充放电控制电路工作原理示意图，上述的电池充放电控制电路的工作原理示意图如图3所示：充放电控制电路由以下几个部分组成：开关及控制电路switch，对顶MOS：VT1和VT2，以及连接对顶MOS的GS极的resistor电阻和保险管组成。电池充放电控制电路工作原理图中有以下几个信号：1)VCC：电源模块提供的一个辅助电源电压，其作用就是为控制电路的对顶MOS管提供驱动电压；2)battery-:电池的负极，工作原理图上电池负通过对顶MOS和***地GND相连，实际运用中该条电路还可以串联一个保险管和电流检测电阻；3)GND:电源输出地和***地。
上述的电池充放电控制电路基本工作原理就是开关及控制电路switch的开通和断开来控制对顶MOS管VT1和VT2的导通和关断；当开关电路开通时，辅助电源电压VCC、电阻resistor、VT1的体内二极管和GND就构成一 个电流回路，电阻resistor就会因为电流而产生电压，其大小为VR＝VCC-0.7V，0.7V是MOS管VT1体内二极管的导通压降(不同型号MOS管的体内二极管导通压降会有所不同)。一旦VR大于MOS管的GS门槛电压，则VT1和VT2的DS极将由截止状态变为饱和导通状态，这样电池就可以实现进行充电和放电功能了。当开关及控制电路switch处于断开状态时，电阻resistor两端没有电流流过，因此电压为0V，也就是MOS管VT1和VT2的GS电压为0V，因此两个MOS处于截止状态，也就不会有电流流过两个MOS管的DS极，此时电源既不能对电池进行充电，同时电池也不能对***进行放电。
开关及控制电路switch在工作原理图中是用两个触点来表示，实际上该电路用一些电子器件来共同实现此开关功能的，并且开通和断开由单片机控制信号来控制的。
图2是本实用新型实施例备用电池充放电控制电路的***总体方案图，整个***需要AC-DC电源模块、单片机控制模块、电池监控模块、以及充放电控制电路模块以及备用电池等功能模块的相互配合，共同实现电池充放电的智能化控制。
图3是本实用新型实施例备用电池充放电控制电路工作原理示意图，开关及控制电路switch的开通和断开来控制对顶MOS管VT1和VT2的导通和关断，从而实现电池充放电控制的目的。开关及控制电路switch有两种实现方案，一种是用光耦来做开关控制器件，这种方案有三种电路连接方式，见图4、图5和图6；另外一种方案是用继电器来坐开关控制器件，电路连接方式见图7。
1.采用光耦作为开关控制器件的实施方式：
1)第一种电路连接方式：
采用光耦来作为开关控制器件的方案有三种电路连接方式。第一种方式见图4，这种方式适用于VCC大小和单片机的工作电压大小不一致的情况。在此种电路连接方式中，电池的负极battery-和对顶MOS管VT1和VT2连接的电路串联了一个保险管FU1和电阻R6。保险管FU1在电池短路的情况下，可以迅速断开，防止电流过大而发生火灾。电阻R6是电流检测电阻，参数的电流信号BAT_IS传给单片机以及其他控制电路。当BATCTL为高电平时， 三极管VT3受电阻R1的驱动而导通，这样VCC、光耦原边的体内二极管和VT3的集电极构成了一个电流回路，光耦体内二极管会有电流流过而导致光耦副边的体内三极管饱和导通。因此就会有电流流过光耦D1的PIN3和PIN4脚，并且流过电阻R5和光耦VT1的体内二极管流回GND。这样对顶MOS管VT1和VT2的GS电压就会大于门槛电压而导通，电池就可以进行充电和放电了。当BATCTL为低电平时，三极管VT3处于截止状态，光耦D1原边体内二极管就不会有电流流过，因此也处于截止状态。电阻R5也不会有电流流过，因此对顶MOS管VT1和VT2的GS电压为0V，因此也就处于截止状态，因此电池既不能充电也不能放电。在实际使用中，VT3三极管也可以用MOS管代替，VT3的1脚对应MOS管的G极，2脚对应MOS管的S极，3脚对应MOS管的D极。
2)第二种电路连接方式：
图5是本实用新型实施例用光耦作为开关控制器件的第二种电路图，这种方式是采用单片机直接来驱动光耦D1，适用于VCC电压和单片机工作电压大小一致的情况。当BATCTL为低电平时，就会有电流流过电阻R3和光耦D1原边体内二极管，光耦D1副边就会处于饱和导通的状态。因此就会有电流流过光耦D1的PIN3和PIN4脚，并且流过电阻R5和光耦VT1的体内二极管流回GND。这样对顶MOS管VT1和VT2的GS电压就会大于门槛电压而导通，电池就可以进行充电和放电了。当BATCTL为高电平时，光耦D1原边体内二极管因为没有电压差而不会有电流流过，因此光耦D1副边三极管处于截止状态，电阻R5也不会有电流流过，因此对顶MOS管VT1和VT2的GS电压为0V，因此也就处于截止状态，因此电池既不能充电也不能放电。
3)第三种电路连接方式：
图6是本实用新型实施例用光耦作为开关控制器件的第三种电路图，这种方式也是采用单片机直接来驱动光耦D1。当BATCTL为高电平时，就会有电流流过电阻R3和光耦D1原边体内二极管，光耦D1副边就会处于饱和导通的状态。因此就会有电流流过光耦D1的PIN3和PIN4脚，并且流过电阻R5和光耦VT1的体内二极管流回GND。这样对顶MOS管VT1和VT2 的GS电压就会大于门槛电压而导通，电池就可以进行充电和放电了。当BATCTL为低电平时，光耦D1原边体内二极管因为没有电压差而不会有电流流过，因此光耦D1副边三极管处于截止状态，电阻R5也不会有电流流过，因此对顶MOS管VT1和VT2的GS电压为0V，因此也就处于截止状态，因此电池既不能充电也不能放电。
2.采用继电器作为开关控制器件的实施方式：
图7是本实用新型实施例用继电器作为开关控制器件的电路图，这种方式和上面上述的第一种电路连接方式相似，就是用继电器K1来代替了光耦D1。当BATCTL为高电平时，三极管VT3受电阻R1的驱动而导通，这样VCC、继电器K1的线圈和VT3的集电极构成了一个电流回路，继电器线圈电流流过而导致继电器的触点闭合。因此就会有电流流过电阻R5和光耦VT1的体内二极管流回GND。这样对顶MOS管VT1和VT2的GS电压就会大于门槛电压而导通，电池就可以进行充电和放电了。当BATCTL为低电平时，三极管VT3处于截止状态，继电器K1的线圈就不会有电流流过，因此继电器K1的触点就处于断开状态。电阻R5因而不会有电流流过，因此对顶MOS管VT1和VT2的GS电压为0V，因此也就处于截止状态，因此电池既不能充电也不能放电。在实际使用中，VT3三极管也可以用MOS管代替，VT3的1脚对应MOS管的G极，2脚对应MOS管的S极，3脚对应MOS管的D极。
综上所述，通过本实用新型，相比于常规电池充放电控制往往使用继电器作为控制开关，或者是充电和放电分开控制。而本实用新型采用了两个对顶MOS作为控制开关，具有以下几个优点：
控制简单可靠。控制电路器件少，可以对电池的充电和放电全过程均加以有效的控制，在单片机控制电路的监控下，电池充放可以实现热插拔，防反接等智能化功能，单片机还可以对电池温升，电压，电流等状态进行监控，出现异常状况可以及时进行相应处理，这不仅可以保证***的稳定运行，同时可以确保电池的安全使用，提高电池的使用寿命。
节能，损耗小。MOS管的DS极导通电阻很小，同时MOS管属于电压驱动型器件，因此在电池充放电过程中该电路相对继电器功耗会更小，实现 了节能的目的。
使用寿命长。继电器触电容易在导通和关断过程中因放电导致的高温而受损老化，而MOS管耐冲击能力更好，因此使用寿命更长，可靠性更高。
体积小。MOS管相对继电器体积更小，可以节省更多空间。
以上所述仅为本实用新型可选实施例而已，并不用于限制本实用新型实施例，对于本领域的技术人员来说，本实用新型实施例可以有多种更改和变化。凡在本实用新型实施例的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型实施例的保护范围之内。
工业实用性
通过本实用新型实施例方案，采用一种电池充放电控制电路，包括：开关控制组件，MOS管电路和用于为该MOS管电路提供导通电压的第一电阻；开关控制组件，连接至MOS管电路，用于控制MOS管电路中第一MOS管和第二MOS管的导通或者关断；MOS管电路，包括第一MOS管和第二MOS管，第一MOS管中的两个输出管脚分别与该第一电阻的两端连接，另一个输出管脚接地；第二MOS管中的两个输出管脚分别与该第一电阻的两端连接，另一个输出管脚与电池连接；第一电阻，连接至开关控制组件。解决了相关技术中不能实现对备用电池的充放电控制的问题，进而实现了对备用电池的充放电的控制。

Claims (9)

  1. 一种电池充放电控制电路，包括：开关控制组件，金属氧化物半导体场效应晶体管MOS管电路和用于为所述MOS管电路提供导通电压的第一电阻；
    所述开关控制组件，连接至MOS管电路，用于控制所述MOS管电路中第一MOS管和第二MOS管的导通或者关断；
    所述MOS管电路，包括所述第一MOS管和所述第二MOS管，所述第一MOS管中的两个输出管脚分别与所述第一电阻的两端连接，另一个输出管脚接地；所述第二MOS管中的两个输出管脚分别与所述第一电阻的两端连接，另一个输出管脚与电池连接；
    所述第一电阻，连接至所述开关控制组件。
  2. 根据权利要求1所述的电池充放电控制电路，还包括：
    用于为电路提供保护的保险组件，该保险组件的一端连接至所述第二MOS管，另一端连接至所述电池。
  3. 根据权利要求1所述的电池充放电控制电路，还包括：
    电流检测电路，所述电流检测电路的一端连接至所述第一MOS管，另一端接地，用于采集电流信号。
  4. 根据权利要求2所述的电池充放电控制电路，其中，所述开关控制组件包括：
    光耦器，连接至三极管和所述MOS管电路，用于控制所述第一MOS管和所述第二MOS管的导通或者关断；
    所述三极管，连接至第三电阻和所述光耦器，用于通过所述第三电阻接收导通电压；
    所述第三电阻，用于为所述三极管提供导通电压。
  5. 根据权利要求2所述的电池充放电控制电路，其中，所述开关控制组件包括：
    光耦器，连接至第三MOS管和所述MOS管电路，用于控制所述第一 MOS管和所述第二MOS管的导通或者关断；
    所述第三MOS管，连接至第三电阻和所述光耦器，用于通过所述第三电阻接收导通电压；
    所述第三电阻，用于为所述第三MOS管提供导通电压。
  6. 根据权利要求2所述的电池充放电控制电路，其中，所述开关控制组件包括：
    继电器，连接至三极管和所述MOS管电路，用于控制所述第一MOS管和所述第二MOS管的导通或者关断；
    所述三极管，连接至第三电阻和所述继电器，用于通过所述第三电阻接收导通电压；
    所述第三电阻，用于为所述三极管提供导通电压。
  7. 根据权利要求2所述的电池充放电控制电路，其中，所述开关控制组件包括：
    继电器，连接至第三MOS管和所述MOS管电路，用于控制所述第一MOS管和所述第二MOS管的导通或者关断；
    所述第三MOS管，连接至第三电阻和所述继电器，用于通过所述第三电阻接收导通电压；
    所述第三电阻，用于为所述第三MOS管提供导通电压。
  8. 根据权利要求1至7中任一项所述的电池充放电控制电路，其中，所述MOS管电路连接所述电池的负极。
  9. 一种电池充放电***，包括：所述权利要求1至8中任一项所述的电池充放电控制电路。
PCT/CN2016/092365 2015-07-31 2016-07-29 一种电池充放电控制电路及电池充放电*** WO2017020782A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201520573063.6U CN204967307U (zh) 2015-07-31 2015-07-31 电池充放电控制电路及电池充放电***
CN201520573063.6 2015-07-31

Publications (1)

Publication Number Publication Date
WO2017020782A1 true WO2017020782A1 (zh) 2017-02-09

Family

ID=55062348

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/092365 WO2017020782A1 (zh) 2015-07-31 2016-07-29 一种电池充放电控制电路及电池充放电***

Country Status (2)

Country Link
CN (1) CN204967307U (zh)
WO (1) WO2017020782A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109698686A (zh) * 2018-12-18 2019-04-30 国网西藏电力有限公司 一种简易的大电流光耦开关电路
CN112202228A (zh) * 2020-10-20 2021-01-08 深圳煜昇科技有限公司 一种双电池充放电隔离供电电路
CN112798916A (zh) * 2020-07-23 2021-05-14 浙江高泰昊能科技有限公司 充放电mos管的黏连检测电路及其检测方法
CN114899788A (zh) * 2022-05-17 2022-08-12 深圳英众世纪智能科技有限公司 一种电源控制方法及电子设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204967307U (zh) * 2015-07-31 2016-01-13 中兴通讯股份有限公司 电池充放电控制电路及电池充放电***
CN110350631A (zh) * 2019-08-07 2019-10-18 浙江中智海通信科技有限公司 电池充放电断路开关电路及其应用

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070103834A1 (en) * 2005-11-07 2007-05-10 Chun-Wei Huang Circuit for charging protection with enhanced overcurrent protection circuitry
CN202564995U (zh) * 2012-05-17 2012-11-28 深圳先进储能材料国家工程研究中心有限公司 一种多路电池组充放电控制装置
CN103166290A (zh) * 2013-03-26 2013-06-19 欣旺达电子股份有限公司 单节锂电电动工具控制与保护电路及其检测、控制方法
CN104578322A (zh) * 2015-01-30 2015-04-29 天津工业大学 一种电池组能量均衡结构及其实现方法
CN204967307U (zh) * 2015-07-31 2016-01-13 中兴通讯股份有限公司 电池充放电控制电路及电池充放电***

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070103834A1 (en) * 2005-11-07 2007-05-10 Chun-Wei Huang Circuit for charging protection with enhanced overcurrent protection circuitry
CN202564995U (zh) * 2012-05-17 2012-11-28 深圳先进储能材料国家工程研究中心有限公司 一种多路电池组充放电控制装置
CN103166290A (zh) * 2013-03-26 2013-06-19 欣旺达电子股份有限公司 单节锂电电动工具控制与保护电路及其检测、控制方法
CN104578322A (zh) * 2015-01-30 2015-04-29 天津工业大学 一种电池组能量均衡结构及其实现方法
CN204967307U (zh) * 2015-07-31 2016-01-13 中兴通讯股份有限公司 电池充放电控制电路及电池充放电***

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109698686A (zh) * 2018-12-18 2019-04-30 国网西藏电力有限公司 一种简易的大电流光耦开关电路
CN112798916A (zh) * 2020-07-23 2021-05-14 浙江高泰昊能科技有限公司 充放电mos管的黏连检测电路及其检测方法
CN112202228A (zh) * 2020-10-20 2021-01-08 深圳煜昇科技有限公司 一种双电池充放电隔离供电电路
CN114899788A (zh) * 2022-05-17 2022-08-12 深圳英众世纪智能科技有限公司 一种电源控制方法及电子设备

Also Published As

Publication number Publication date
CN204967307U (zh) 2016-01-13

Similar Documents

Publication Publication Date Title
WO2017020782A1 (zh) 一种电池充放电控制电路及电池充放电***
CN101888109B (zh) 采用双向反接保护的蓄电池充电控制电路
CN104037720A (zh) 电子烟中防止微控制器电源电压跌落的保护装置和方法
US20210066930A1 (en) Power System
CN103607009A (zh) 一种带自动保护功能的充放电电路
CN105098891A (zh) 一种同口电池管理***充电唤醒电路
WO2023016574A1 (zh) 开关电路、电池管理***、电池包、用电设备及控制方法
CN201726176U (zh) 采用双向反接保护的蓄电池充电控制电路
CN202513559U (zh) 一种电池短路保护电路
CN203166462U (zh) 电子烟中防止微控制器电源电压跌落的保护装置
CN102163866A (zh) 一种可定时手机电池充电器
WO2021258366A1 (zh) 控制电路、电池管理***及电化学装置
CN103326433B (zh) 便携式设备供电控制电路及便携式监护仪
CN203690904U (zh) 一种自保护在线式直流输出电路
WO2021258367A1 (zh) 控制电路、电池管理***及电化学装置
CN101420123B (zh) 一种防止蓄电池反接的太阳能控制器
CN204046218U (zh) 一种节能升降压电池电路
CN106080238B (zh) 一种电动汽车智能充电***
CN210724282U (zh) 一种蓄电池过充保护电路
CN211046468U (zh) 一种锂电池短路保护电路
CN113541263A (zh) 一种便携式设备外接电源和电池供电自动切换电路
CN209184290U (zh) 一种供电管理电路
CN102611182A (zh) 超级电容充电器
CN105871045A (zh) 一种用于太阳能控制***中的充电电路
CN105811491A (zh) 电子电路智能关断控制***

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16832270

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16832270

Country of ref document: EP

Kind code of ref document: A1