WO2018119798A1 - Procédé de charge de batterie, système de charge, chargeur et batterie - Google Patents

Procédé de charge de batterie, système de charge, chargeur et batterie Download PDF

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Publication number
WO2018119798A1
WO2018119798A1 PCT/CN2016/112773 CN2016112773W WO2018119798A1 WO 2018119798 A1 WO2018119798 A1 WO 2018119798A1 CN 2016112773 W CN2016112773 W CN 2016112773W WO 2018119798 A1 WO2018119798 A1 WO 2018119798A1
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WO
WIPO (PCT)
Prior art keywords
charging
battery
phase
charging circuit
stage
Prior art date
Application number
PCT/CN2016/112773
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English (en)
Chinese (zh)
Inventor
王文韬
郑大阳
田杰
Original Assignee
深圳市大疆创新科技有限公司
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 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to CN201680002559.5A priority Critical patent/CN106797132B/zh
Priority to PCT/CN2016/112773 priority patent/WO2018119798A1/fr
Publication of WO2018119798A1 publication Critical patent/WO2018119798A1/fr

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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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters

Definitions

  • the embodiments of the present invention relate to the field of drones, and in particular, to a battery charging method, a charging system, a charger, and a battery.
  • the charging time of the lithium battery in the constant current charging phase is related to the output power of the charger. If the output power of the charger is larger, the output current of the charger is larger, and the charging time of the lithium battery in the constant current charging phase is shorter; The charging time of the battery during the constant voltage charging phase is independent of the output power of the charger, but is related to the electrochemical behavior of the lithium battery.
  • the prior art In order to shorten the charging time of the lithium battery, the prior art generally uses a charger with a large output power to charge the lithium battery, but the charging time of the lithium battery in the constant voltage charging phase is not effectively shortened due to the large output power of the charger. At the same time, using a charger with a large output power will also increase the cost of the charger.
  • Embodiments of the present invention provide a battery charging method, a charging system, a charger, and a battery to improve a charging speed of the battery.
  • An aspect of an embodiment of the present invention provides a battery charging method, wherein a charging phase of the battery includes a first phase, a second phase, a third phase, and a fourth phase, which are sequentially performed, the method comprising:
  • the charging circuit is controlled to charge the battery with an output power greater than the rated power. Electricity;
  • the charging circuit is controlled to charge the battery at a constant voltage.
  • the charging circuit is controlled to charge the battery at a constant voltage.
  • Another aspect of an embodiment of the present invention is to provide a charger, including:
  • a battery including:
  • a plurality of cells are electrically connected to the charging system.
  • FIG. 5 is a flowchart of a battery charging method according to another embodiment of the present invention.
  • FIG. 7 is a structural diagram of a charging system of a battery according to another embodiment of the present invention.
  • FIG. 9 is a structural diagram of a battery according to an embodiment of the present invention.
  • the prior art In order to shorten the charging time of the lithium battery, the prior art generally uses a charger with a large output power P to charge the lithium battery, but the charging time of the lithium battery in the CV charging phase 11 is not effective due to the large output power P of the charger. Shortened, while using a charger with a large output power P It will also increase the cost of the charger. In order to solve this problem, the present disclosure provides a battery charging method, and a battery charging system, which will be described in detail below.
  • the first stage 31 is the initial stage of charging the battery by the charging circuit of the charger.
  • the starting temperature of the charger is low.
  • the charger outputs power exceeding the rated power.
  • the heat generated by charging the battery is not much, the temperature of charging accumulation is not high, and there is no safety and reliability effect on the power components in the charger. Therefore, in the first stage of charging, the processor can control the charging circuit. Output power P exceeding the rated power of the charger Charge the lithium battery.
  • the processor controls the charging circuit to charge the lithium battery with the rated power, that is, the output power P of the charger is maintained at the rated power of the charger. At this time, the voltage across the lithium battery is less than The rated output voltage of the charger, the processor can also control the charging circuit to increase the charging current, which can be higher than the rated output current of the charger to increase the voltage across the lithium battery.
  • Step S104 in the fourth stage, controlling the charging circuit to charge the battery at a constant voltage.
  • the battery is charged in a plurality of charging phases by controlling the charging circuit, and the plurality of charging phases include a first phase, a second phase, a third phase, and a fourth phase, which are sequentially performed, and the charging circuit is controlled to exceed in the first phase.
  • the rated power output of the charger charges the battery, which can effectively reduce the charging time of the battery in the first stage; in the second stage, the charging circuit is controlled to charge the battery with the rated power to ensure the safety of the charging circuit; In the stage, the charging circuit is controlled to charge the battery with a pulse current, which can reduce the polarization effect of the lithium battery; in the fourth stage, the charging circuit is controlled to charge the battery with a constant voltage.
  • the heat quantity Q generated by the charging circuit is calculated, and the relationship between the heat quantity Q, the output power P and the charging time t can be determined according to the formula (2):
  • Step S205 is the same as step S104, and the specific method is not described herein again.
  • FIG. 5 is a flowchart of a battery charging method according to another embodiment of the present invention. As shown in FIG. 5, on the basis of the embodiment shown in FIG. 1, the method in this embodiment may include:
  • Step S301 in the first stage, controlling the charging circuit to charge the battery with an output power greater than the rated power.
  • the battery may be a lithium battery, and the lithium battery includes a plurality of cells connected in series or/and in parallel. After the charger is electrically connected to the battery, the charging circuit charges the battery cells.
  • Step S302 In the first stage, detecting heat generated by the charging circuit.
  • Step S302 is consistent with step S202, and the specific method is not described herein again.
  • Step S303 in the second phase, controlling the output current of the charging circuit to gradually decrease, and gradually increasing the output voltage, so that the output power of the charging circuit is the rated power of the charging circuit.
  • the lithium battery enters the PC charging phase 33, that is, the third phase 33, which is specifically the voltage corresponding to the voltage turning point a between the CP charging phase 32 and the PC charging phase 33.
  • Step S304 in the third stage, controlling the charging circuit to charge the battery with a pulse current.
  • the processor controls the charging circuit to charge the lithium battery with the pulse current I, while in the third stage 33, the output power P of the charging circuit is the pulse power.
  • the output voltage V of the charger is greater than the first voltage threshold, and the output voltage V of the charger rises slowly, but the rate of rise of the output voltage of the charging circuit in the second stage 32 is Greater than the rate of rise of the output voltage of the charging circuit in the third phase 33, i.e., the rate of increase of the output voltage of the charging circuit in the second phase 32, the output voltage of the charging circuit is slower in the third phase 33.
  • Step S305 in the third stage, adjusting the duty ratio of the pulse current to adjust the average charging current.
  • the processor in the third stage 33, can also be used to adjust the duty cycle of the pulse current I to adjust the average charging current of the charging circuit in the third stage 33, specifically, the duty ratio of the pulse current I.
  • the processor can also be used to adjust the duty cycle of the pulse current I to adjust the average charging current of the charging circuit in the third stage 33, specifically, the duty ratio of the pulse current I.
  • the larger the charging circuit the larger the average charging current in the third phase 33.
  • the voltage V across the lithium battery or the output voltage V of the charger slowly rises, when the voltage V across the lithium battery or the output voltage V of the charger reaches At the second voltage threshold, the lithium battery enters the CV charging phase 34, which is the fourth phase 34, which is specifically between the PC charging phase 33 and the CV charging phase 34.
  • the voltage turns to a voltage corresponding to point b, and the second voltage threshold is greater than the first voltage threshold.
  • Step S306 in the fourth stage, controlling the charging circuit to charge the battery at a constant voltage.
  • Step S306 is the same as step S205. The specific method is not described here.
  • the charging circuit ensures that the charging circuit charges the lithium battery at the rated power in the second stage.
  • Embodiments of the present invention provide a charging system for a battery.
  • 6 is a structural diagram of a charging system for a battery according to an embodiment of the present invention. As shown in FIG. 6, the charging system 60 includes a charging circuit 61 and one or more processors 62 for charging the battery 90.
  • the processor 62 is electrically connected to the charging circuit 61 for controlling the charging circuit 61 to perform charging of the battery in a plurality of charging phases, where the plurality of charging phases include the first phase, the second phase, the third phase, and the In four stages, the processor 62 is configured to: in the first phase, control the charging circuit 61 to charge the battery 90 with an output power greater than the rated power; in the second phase, control the charging circuit 61 to supply the battery with the rated power At the third stage, the charging circuit 61 is controlled to charge the battery 90 with a pulse current; in the fourth stage, the charging circuit 61 is controlled to charge the battery 90 at a constant voltage.
  • the battery is charged in a plurality of charging phases by controlling the charging circuit, and the plurality of charging phases include a first phase, a second phase, a third phase, and a fourth phase, which are sequentially performed, and the charging circuit is controlled to exceed in the first phase.
  • the rated power output of the charger charges the battery, which can effectively reduce the charging time of the battery in the first stage; in the second stage, the charging circuit is controlled to charge the battery with the rated power to ensure the safety of the charging circuit; In the stage, the charging circuit is controlled to charge the battery with a pulse current, which can reduce the polarization effect of the lithium battery; in the fourth stage, the charging circuit is controlled to charge the battery with a constant voltage.
  • the charging time of the battery in the fourth stage is related to the polarization effect of the battery, the polarization effect of the battery is smaller, and the charging time of the battery in the fourth stage is shorter. Therefore, in the third stage, the charging circuit is controlled to pulse current. Charging the battery can effectively shorten the charging time of the battery in the fourth stage. Compared with the prior art, it does not need to adopt a large output power. The charger charges the battery, which saves the cost of the charger. At the same time, it also effectively shortens the charging time of the battery during the constant voltage charging phase, thereby achieving the effect of fast charging of the battery.
  • FIG. 7 is a structural diagram of a charging system for a battery according to another embodiment of the present invention; on the basis of the technical solution provided by the embodiment shown in FIG. 6, the charging system 60 further includes: electrical parameter detection electrically connected to the processor 62.
  • the circuit 63, the electrical parameter detecting circuit 63 is for detecting the electrical parameter of the charging circuit 61 in the first stage; the processor 62 determines the heat generated by the charging circuit 61 based on the electrical parameter of the charging circuit 61 in the first stage.
  • the first phase when the heat generated by the charging circuit reaches a thermal threshold, the charging phase of the battery enters the second phase from the first phase.
  • the electrical parameter detecting circuit 63 includes at least one of a temperature sensor, a voltage detecting circuit, a current detecting circuit, and a resistance detecting circuit.
  • the temperature sensor is used to detect the current temperature of the charging circuit 61. Specifically, the temperature sensor is used to monitor the current temperature of the power component in the charging circuit 61. In the first phase, when the temperature of the power component in the charging circuit reaches a temperature threshold, the charging phase of the battery enters the second phase from the first phase.
  • the charging circuit when the heat generated by the charging circuit is detected in the first stage, and the charging circuit is prevented from charging the battery with the output power exceeding the rated power in the first stage, the generated heat exceeds the receiving range of the charging circuit, and the charging circuit is burned.
  • the temperature of the power component in the charging circuit is monitored by a temperature sensor.
  • the output power of the charging circuit is immediately restored to the rated power, which improves the The control of the charging circuit is accurate, and the battery is shortened based on the charging time of the first stage, thereby ensuring the safety of the charging circuit.
  • the charging phase of the battery enters the third phase from the second phase.
  • the charging circuit 61 charges the battery with a pulse current, and at the same time, the output power of the charging circuit is pulse power.
  • the output voltage of the charging circuit is greater than the first voltage threshold, and continues to rise, and the rising rate of the output voltage of the charging circuit in the second phase is greater than the charging circuit in the The rate of rise of the three-stage output voltage.
  • the charging phase of the battery enters the fourth phase from the third phase.
  • the second voltage threshold is greater than the first voltage threshold.
  • the processor 62 is further configured to: adjust a duty cycle of the pulse current to adjust an average charging current.
  • the battery is a lithium battery.
  • the battery includes a plurality of cells in series or/and in parallel.
  • the charging circuit ensures that the charging circuit charges the lithium battery at the rated power in the second stage.
  • FIG. 8 is a structural diagram of a charger according to an embodiment of the present invention. As shown in FIG. 8, the charger 80 includes a housing 81, and the charging system 60 described in the above embodiment. The charging system 60 is mounted on the housing 81. Inside.
  • the battery is charged in a plurality of charging phases by controlling the charging circuit, and the plurality of charging phases include a first phase, a second phase, a third phase, and a fourth phase, which are sequentially performed, and the charging circuit is controlled to exceed in the first phase.
  • the rated power output of the charger charges the battery, which can effectively reduce the charging time of the battery in the first stage; in the second stage, the charging circuit is controlled to charge the battery with the rated power to ensure the safety of the charging circuit; Stage, control charging circuit Charging the battery with a pulse current reduces the polarization effect of the lithium battery; in the fourth stage, the charging circuit is controlled to charge the battery at a constant voltage.
  • the charging time of the battery in the fourth stage is related to the polarization effect of the battery, the polarization effect of the battery is smaller, and the charging time of the battery in the fourth stage is shorter. Therefore, in the third stage, the charging circuit is controlled to pulse current. Charging the battery can effectively shorten the charging time of the battery in the fourth stage. Compared with the prior art, it is not necessary to use a charger with a large output power to charge the battery, thereby saving the cost of the charger and effectively shortening the battery.
  • the charging time in the constant voltage charging phase achieves the effect of fast battery charging.
  • FIG. 9 is a structural diagram of a battery according to an embodiment of the present invention.
  • the battery 90 includes a housing 91, a charging system 60 according to the above embodiment, and a plurality of batteries 92.
  • the charging system 60 is mounted on the housing.
  • a plurality of cells 92 are electrically coupled to the charging system 60.
  • the battery is charged in a plurality of charging phases by controlling the charging circuit, and the plurality of charging phases include a first phase, a second phase, a third phase, and a fourth phase, which are sequentially performed, and the charging circuit is controlled to exceed in the first phase.
  • the rated power output of the charger charges the battery, which can effectively reduce the charging time of the battery in the first stage; in the second stage, the charging circuit is controlled to charge the battery with the rated power to ensure the safety of the charging circuit; In the stage, the charging circuit is controlled to charge the battery with a pulse current, which can reduce the polarization effect of the lithium battery; in the fourth stage, the charging circuit is controlled to charge the battery with a constant voltage.
  • the charging time of the battery in the fourth stage is related to the polarization effect of the battery, the polarization effect of the battery is smaller, and the charging time of the battery in the fourth stage is shorter. Therefore, in the third stage, the charging circuit is controlled to pulse current. Charging the battery can effectively shorten the charging time of the battery in the fourth stage. Compared with the prior art, it is not necessary to use a charger with a large output power to charge the battery, thereby saving the cost of the charger and effectively shortening the battery.
  • the charging time in the constant voltage charging phase achieves the effect of fast battery charging.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, actual There may be additional divisions at present, for example multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

Abstract

La présente invention concerne un procédé de charge de batterie, un système de charge (60), un chargeur (80) et une batterie (90). Les étapes de charge de la batterie (90) comprennent une première étape (31), une deuxième étape (32), une troisième étape (33) et une quatrième étape (34) qui sont réalisées de manière séquentielle. Le procédé comprend les étapes suivantes : dans la première étape (31), commander un circuit de charge (61) pour charger la batterie (90) par une puissance de sortie supérieure à une puissance nominale (S101) ; dans la deuxième étape (32), commander le circuit de charge (61) pour charger la batterie (90) par la puissance nominale (S102); dans la troisième étape (33), commander le circuit de charge (61) pour charger la batterie (90) par un courant d'impulsion (S103) ; et dans la quatrième étape (34), commander le circuit de charge (61) pour charger la batterie (90) par une tension constante (S104). Le procédé raccourcit de manière efficace le temps de charge de la première étape (31) et le temps de charge de la quatrième étape (34) destinés à la batterie (90) et ne nécessite pas de chargeur d'une puissance de sortie plus grande pour charger la batterie (90), réduisant les coûts d'un chargeur ainsi que réalisant une charge rapide de la batterie (90).
PCT/CN2016/112773 2016-12-28 2016-12-28 Procédé de charge de batterie, système de charge, chargeur et batterie WO2018119798A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680002559.5A CN106797132B (zh) 2016-12-28 2016-12-28 电池充电方法、充电系统、充电器及电池
PCT/CN2016/112773 WO2018119798A1 (fr) 2016-12-28 2016-12-28 Procédé de charge de batterie, système de charge, chargeur et batterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/112773 WO2018119798A1 (fr) 2016-12-28 2016-12-28 Procédé de charge de batterie, système de charge, chargeur et batterie

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CN115441519A (zh) * 2021-06-01 2022-12-06 深圳麦时科技有限公司 充电控制电路、方法及装置、充电系统、分体式雾化装置
CN115276193B (zh) * 2022-09-29 2022-12-23 中赣通信(集团)有限公司 基于电力载波的充电桩分段充电方法及系统

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US20160009191A1 (en) * 2013-04-02 2016-01-14 Rwe Ag Method for operating a charging station
CN105375072A (zh) * 2014-08-15 2016-03-02 艾默生网络能源有限公司 一种电池充电方法及装置
CN106025409A (zh) * 2016-07-18 2016-10-12 上海学源电子科技有限公司 一种变恒流-恒压充电方法

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