WO2022171169A1 - 电池包以及电池包的充放电控制方法 - Google Patents

电池包以及电池包的充放电控制方法 Download PDF

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Publication number
WO2022171169A1
WO2022171169A1 PCT/CN2022/075839 CN2022075839W WO2022171169A1 WO 2022171169 A1 WO2022171169 A1 WO 2022171169A1 CN 2022075839 W CN2022075839 W CN 2022075839W WO 2022171169 A1 WO2022171169 A1 WO 2022171169A1
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WO
WIPO (PCT)
Prior art keywords
interface
electrical equipment
battery pack
charging
electrical
Prior art date
Application number
PCT/CN2022/075839
Other languages
English (en)
French (fr)
Inventor
沈峰
钱程
陈明明
吕少锋
Original Assignee
苏州宝时得电动工具有限公司
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
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Application filed by 苏州宝时得电动工具有限公司 filed Critical 苏州宝时得电动工具有限公司
Priority to EP22752329.7A priority Critical patent/EP4293863A1/en
Publication of WO2022171169A1 publication Critical patent/WO2022171169A1/zh
Priority to US18/232,285 priority patent/US20230387697A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00045Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068Battery or charger load switching, e.g. concurrent charging and load supply
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/00712Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/007188Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/007188Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/30Batteries in portable systems, e.g. mobile phone, laptop
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/30Charge provided using DC bus or data bus of a computer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/40Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries adapted for charging from various sources, e.g. AC, DC or multivoltage
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the invention relates to the field of battery packs, in particular to a battery pack for electric tools and a charging and discharging method for the battery pack.
  • power tool battery packs are usually only provided with electrical equipment interfaces to provide power to power tools.
  • the interface is in a single form and cannot meet the increasing charging needs of users for 3C equipment.
  • people's demand for 3C-type devices is constantly increasing, and 3C-type devices usually have the defects of fast power consumption and short battery life. Therefore, the design of setting the 3C device interface on the power tool battery pack provides convenience for the tool user.
  • USB Type-C The bidirectional interface characteristics of USB Type-C and its excellent data transmission characteristics, high stability and other characteristics make the 3C type interface represented by USB Type-C gradually become the mainstream power/data cable of 3C type equipment. Toward the preferred smart device interface that can be set on power tool battery packs.
  • the present invention provides a battery pack which is detachably connected to an external device for charging and discharging,
  • a first interface used for detachably mating with electrical equipment
  • the second interface is used to detachably connect with 3C equipment
  • a switch module electrically connected between the cell group of the battery pack and the second interface
  • the battery pack also includes a control module configured to:
  • the control module controls the switch module to enable or disable the operation of the second interface.
  • the switch module includes a first switch module, the first switch module includes a switch element and a switch drive circuit, and the switch drive circuit is electrically connected between the control module and the switch element During this time, the control module controls the switch driving circuit to drive and close the switch element to allow the second interface to work, or controls the switch drive circuit to drive the switch element to open to disable the second interface from working.
  • the equipment types of the electrical equipment include electrical equipment and charging equipment
  • the control module judges the device type of the electrical device according to the electrical device parameter
  • control module determines that the electrical device is the electrical device
  • the control module controls the battery cell group to supply power to the electrical device through the first interface
  • control module determines that the electrical device is the charging device
  • the control module controls the charging device to charge the battery pack through the first interface.
  • the electrical equipment includes a high-power electrical equipment and a low-power electrical equipment; the control module is further configured to detect electrical equipment parameters of the electrical equipment connected to the first interface ;
  • control module determines that the electrical device is a high-power electrical device according to the electrical device parameter, the control module controls the switch module to prohibit the second interface from working;
  • control module determines that the electrical device is a low-power electrical device or a charging device
  • the control module controls the switch module to allow the second interface to work.
  • the 3C device includes a 3C load device and a 3C charging device, and the control module determines the device type of the 3C device according to the 3C device parameter;
  • control module determines that the electrical equipment is a low-power electrical equipment
  • control module determines that the 3C device is the 3C load device
  • control module controls the switch module to allow the battery cell group to supply power to the 3C load device through the second interface
  • control module determines that the 3C device is the 3C charging device
  • the control module controls the switch module to allow the battery pack to be charged by the 3C charging device through the second interface.
  • the device type of the 3C device includes a 3C load device and a 3C charger, and the control module determines the device type of the 3C device according to the 3C device parameter;
  • control module determines that the electrical device is a charging device
  • control module determines that the 3C device is a 3C load device
  • the control module controls the switch module to allow the battery cell group to supply power to the 3C load device through the second interface.
  • control module when the control module determines that the 3C device is a 3C charging device, the control module is configured to: detect that the charging device connected to the first interface has an impact on the battery cell The first charging current of the group, and the second charging current of the battery cell group by the 3C charging device connected to the second interface;
  • control module determines that the sum of the first charging current and the second charging current is higher than the maximum charging current threshold of the cell group, the control module controls the switch module to be turned off to prohibit the The 3C charging device charges the battery pack through the second interface;
  • control module determines that the sum of the first charging current and the second charging current is not higher than the maximum charging current threshold of the cell group, the control module controls the switch module to allow the 3C The charging device charges the battery pack through the second interface.
  • the electrical equipment parameters include at least parameters characterizing the type of electrical equipment, and the parameters characterizing the electrical equipment type include at least terminal setting parameters, equipment type, voltage, current, temperature, power, and electrical parameters. rate of change.
  • control module determines the device type of the electrical device according to the parameter representing the electrical device type
  • control module judges that the electrical equipment is the electrical equipment, the control module judges that the electrical equipment is high-power when at least one parameter of the electrical equipment parameters is not less than a preset threshold. Electrical equipment;
  • the electrical equipment parameters include parameters characterizing the electrical equipment type, such as terminal setting parameters, equipment type, voltage, current, temperature, power, and rate of change of electrical parameters.
  • the first interface includes a power terminal and at least one communication terminal for the control module to communicate with the electrical device.
  • the battery pack communicates with the electrical device by means of digital communication and/or analog communication.
  • the battery pack further includes a second interface control circuit, the second interface control circuit is connected in series between the control module and the second interface, and the second interface control circuit detects The 3C device parameters of the 3C device connected to the second interface are transmitted to the control module, or a control signal of the control module is received to control the charging and discharging of the second interface.
  • the second interface is a USB Type-C interface
  • the communication between the second interface control circuit and the control module is implemented by means of UATR or I2C.
  • the switch module further includes a second switch module, the second switch module is electrically connected between the second interface control circuit and the second interface, and is configured to receive the The control signal of the second interface control circuit is used to control the operation of the second interface.
  • the present invention also provides a charging and discharging control method for a battery pack, the battery pack includes: a battery pack; a first interface for detachably connecting with electrical equipment; and a second interface for detachably connecting with 3C equipment; a switch module electrically connected between the battery pack of the battery pack and the second interface; characterized in that the method includes the following steps:
  • the switch module is controlled according to the parameters of the electrical equipment and/or the parameters of the 3C equipment to enable or disable the operation of the second interface.
  • the step of controlling the operation of the first interface according to the parameters of the electrical device includes:
  • the charging device is controlled to charge the battery cell group through the first interface.
  • the electrical equipment includes a high-power electrical equipment and a low-power electrical equipment; the step of controlling the operation of the first interface according to the electrical equipment parameter further includes:
  • the switch module is closed to allow the second interface to work.
  • Steps also include:
  • the device type of the 3C device includes at least 3C load devices and 3C charging equipment.
  • the step of controlling the switch module according to the electrical equipment parameters and/or the 3C equipment parameters to select allowing the second interface to work includes:
  • the switch module is closed to allow the battery pack to be charged by the 3C charging device through the second interface.
  • the step of controlling the switch module to select allowing the second interface to work according to the electrical equipment parameters and/or the 3C equipment parameters includes: when it is determined that the electrical equipment is charging equipment,
  • the switch module is closed to allow the battery cell group to supply power to the 3C load device through the second interface.
  • the step of controlling the switch module to select and allow the second interface to work according to the electrical equipment parameters and/or the 3C equipment parameters includes:
  • the switch module When it is determined that the sum of the first charging current and the second charging current is higher than the maximum charging current threshold of the battery cell group, the switch module is turned off to prohibit the 3C charging device from passing through the second interface charging the battery pack;
  • the switch module When it is determined that the sum of the first charging current and the second charging current is not higher than the maximum charging current threshold of the cell group, the switch module is closed to allow the 3C charging device to pass through the second interface The battery pack is charged.
  • the electrical equipment parameters include at least parameters characterizing the type of electrical equipment, and the parameters characterizing the electrical equipment type include at least terminal setting parameters, equipment type, voltage, current, temperature, power, and electrical parameters. rate of change.
  • the charge-discharge control method further includes:
  • the electrical equipment When at least one of the parameters of the electrical equipment is not less than a preset threshold, it is determined that the electrical equipment is a high-power electrical equipment.
  • the charging and discharging control method before the step of detecting the electrical device parameters of the first interface and/or the step of detecting the 3C device parameters of the 3C device of the second interface, the charging and discharging control method further includes:
  • Detect the connection state of the first interface and/or the second interface if it is determined that the first interface and/or the second interface is connected to a device, if the device supports The device and/or the 3C device establishes communication, and acquires corresponding electrical device parameters and/or 3C device parameters of the access device of the first interface and/or the second interface.
  • the above-mentioned battery pack detects the electrical equipment parameters of the electrical equipment connected to the first interface of the battery pack, detects the 3C equipment parameters of the 3C equipment connected to the second interface of the battery pack, and controls the charging and discharging of the first interface according to the electrical equipment parameters.
  • the electrical equipment parameters and/or the 3C equipment parameters control the switch module to selectively allow or prohibit the operation of the second interface. That is: when the devices connected to the first interface and the second interface of the battery pack are different, the device parameters of the electrical device connected to the first interface and the 3C device connected to the second interface can be detected, and the electrical equipment can be controlled based on the device parameters.
  • the charging and discharging and control selection of the device allow or prohibit the charging and discharging of the 3C device, so that the two interfaces of the battery pack can realize safe and efficient charging and discharging, or simultaneous discharge or simultaneous charging under specific conditions. It meets the work requirement that users can use two interfaces at the same time, which not only improves the safety performance, but also effectively improves the convenience and applicability of the battery pack.
  • FIG. 1 is a schematic diagram of a first preferred embodiment of a battery pack provided in Embodiment 1 of the present application;
  • FIG. 2 is a top view of the battery pack shown in Figure 1;
  • FIG. 3 is a schematic diagram of the cooperation between the battery pack shown in FIG. 1 and the electrical equipment;
  • Figure 4-5 is a schematic diagram of the cooperation between the battery pack shown in Figure 1 and the 3C equipment;
  • FIG. 6 is a schematic diagram of a functional module of a battery pack provided in Embodiment 1 of the present application.
  • FIG. 7 is a schematic diagram of a functional module of a battery pack provided in Embodiment 1 of the present application.
  • FIG. 8 is a schematic diagram of a functional module of a battery pack provided in Embodiment 1 of the present application.
  • FIG. 9a is a schematic diagram of a functional module of a battery pack provided in Embodiment 1 of the present application.
  • FIG. 9b is a schematic diagram of functional modules of the battery pack provided in Embodiment 1 of the present application.
  • FIG. 10 is a schematic diagram of functional modules of the battery pack provided in Embodiment 1 of the present application.
  • FIG. 11 is a schematic diagram of functional modules of the battery pack provided in Embodiment 1 of the present application.
  • FIG. 12 is a schematic diagram of the cooperation between the battery pack and the electrical equipment provided in the first embodiment of the present application;
  • FIG. 13 is a schematic diagram of another battery pack and electrical equipment provided in Embodiment 1 of the present application.
  • FIG. 14 is a flowchart of a method for controlling charge and discharge of a battery pack provided in Embodiment 2 of the present application;
  • FIG. 15 is a flowchart of a specific example of a charging and discharging control method for a battery pack provided in Embodiment 2 of the present application.
  • a 3C-type interface such as a USB interface
  • an adapter/adapter seat Provides power to Class 3C equipment.
  • both the electrical device interface and the 3C device interface on the battery pack are plugged into the device, usually only one of the interfaces is used, such as charging or discharging one of the interfaces, while disabling the other interface; or not controlling the two interfaces.
  • it mainly includes the following situations:
  • Scenario 1 When both the electrical equipment interface and the Class 3C equipment interface are plugged into the electrical equipment.
  • the power supply parameters of the electrical equipment interface and the 3C equipment interface are different, and the power requirements of the connected equipment are also different.
  • the problem of inconsistent discharge parameters in addition, due to the fact that the electrical equipment needs to start and stop frequently during the operation of the actual working conditions, and the moment when the motor starts and stops, a huge back electromotive force will be generated in the electrical circuit, which will affect the battery.
  • the circuit devices in the functional loop connected to the 3C device interface in the package are impacted, thereby causing irreversible damage and posing a greater safety hazard.
  • the battery pack will disable the power output of the 3C equipment interface when supplying power to the electrical equipment, or prohibit the power supply to the electrical equipment when supplying power to the 3C equipment interface, which results in the user being unable to power the electrical equipment.
  • the equipment and 3C equipment are powered at the same time, which is low in practicability.
  • Scenario 2 When the electrical equipment interface and the Class 3C equipment interface are connected to a charging device and a powered device respectively.
  • a charging device and a powered device For the cell group, especially when the cell group of the battery pack is at a relatively high power output, simultaneous charging and discharging are likely to cause greater damage to the cell group. Therefore, considering the life and battery life of the battery pack, it is usually set that only the charging device is allowed to charge the battery pack or only the battery pack is allowed to discharge the electrical device, that is, the battery pack is not allowed to be discharged while charging.
  • Scenario 3 When the electrical device interface and the 3C device interface are plugged into the charging device at the same time. Power tool battery packs are usually charged only through electrical equipment interfaces. The introduction of 3C type equipment interfaces makes it possible to use 3C charging equipment to charge power tool battery packs. However, the parallel setting of the two interfaces leads to the superposition of the charging current, which is easy to cause the charging current to be too large, and there is a potential safety hazard of overcurrent. Therefore, it is impossible to charge the battery pack through the two interfaces at the same time.
  • the present application provides a battery pack and a charging and discharging control method for the battery pack, which are used to control the charging and discharging process of the battery pack with an electrical device interface and a 3C device interface, so as to improve the battery pack's performance. Ease of use and safety.
  • the battery pack 100 includes a housing 12 , a battery cell group 10 , a first interface 20 , and a second interface 30 .
  • the case includes an upper case 12a and a lower case 12b.
  • Two parallel guide rails 11 are provided on the top surface of the upper casing.
  • the guide rails 11 are matched with the chute on the electrical equipment, so that the battery pack can smoothly slide along the chute to a proper position on the electrical equipment to achieve matching with the electrical equipment.
  • the second interface is arranged in the guide rail.
  • the guide rails can also be arranged on the side or bottom surface of the housing.
  • the second interface can be arranged inside the guide rail or outside the guide rail.
  • the battery pack 10 is disposed in the casing of the battery pack 100 , and the battery pack 10 includes a plurality of battery cells 11 that are electrically connected.
  • the number of the cells 11 and the series-parallel connection between the cells are not specifically limited herein.
  • the battery cells 11 can be connected in series or in parallel, or in a combination of series and parallel to form the battery cell group 10 .
  • the first interface 20 and the second interface 30 are provided on the housing.
  • the first interface 20 is used for the battery pack 100 to be detachably connected to the electrical device 200
  • the electrical device 200 includes an electrical device 210 and a charging device 220 .
  • the electrical device 210 is an electrical device that can be mated with the battery pack 100 through the first interface 20
  • the electrical device 210 is provided with an interface structure matching the battery pack 100 .
  • the above-mentioned electrical equipment can include garden power tools such as lawn mowers, lawn mowers, blowers, etc., including hand-held power tools such as hammer drills, angle grinders, saws, nail guns, drill bits, etc., including those used in daily households.
  • FIG. 3 shows a schematic diagram that the battery pack 100 can be directly detached and connected to some electrical equipment 200 through the guide rails.
  • the electrical equipment 200 can be directly connected to the electrical equipment 200. Charge or discharge work, thereby improving the versatility and adaptability of the battery pack.
  • the charging device 220 is connected to the battery pack 100 through the first interface 20 to charge it.
  • the charging device 220 is provided with an interface structure corresponding to the first interface 20 of the battery pack 100 , so the charging device 220 can be connected to the battery pack through the matching interface. 100 and charge the battery pack 100.
  • the second interface 30 is used for the battery pack 100 to be detachably connected to the 3C device 300 .
  • the 3C device 300 includes at least a 3C load device 310 and a 3C charging device 320. As shown in FIG. 4-5, the battery pack 100 can supply power to the 3C load device 310 through the second interface 30, or the 3C charging device 320 can supply power to the 3C load device 310 through the second interface 30. The second port 30 charges the battery pack 100 .
  • the 3C load device may include but not limited to a variety of electronic devices that support the 3C interface such as tablet, mobile phone, portable computer, camera, etc., and may also include other devices such as power tools that support the 3C interface for power supply.
  • the 3C charging device 320 is usually provided with an interface structure corresponding to the second interface 30 of the battery pack 100 , which is generally understood to be provided with a 3C type interface, which can be a charger that charges the 3C load device through the 3C type interface.
  • the 3C type interface is usually understood as the USB, USB Type A/B/C, micro-A, micro-B, mini-A, mini-B and other types of 3C type interfaces commonly used in electronic equipment.
  • USB USB Type A/B/C
  • the electrical connection between the first interface 20 and the second interface 30 and the correspondingly mated device may be achieved through electrode sheets or other conductive connectors.
  • the battery pack 100 further includes a switch module 40 .
  • the switch module 40 is electrically connected between the cell group 10 and the second interface 30 , and is used to control the on-off of the electrical path between the cell group 10 and the second interface 30 . Specifically, when the switch module 40 is closed, the electrical path between the cell group 10 and the second interface 30 is turned on; when the switch module 40 is turned off, the electrical path between the cell group 10 and the second port 30 is disconnected open.
  • the above-mentioned battery pack 100 further includes a control module 50 , and the control module 50 is configured to control the charging and discharging of the two interfaces according to the device parameters of the connected devices of the first interface 20 and the second interface 30 .
  • the control module 50 detects the electrical equipment parameters of the electrical equipment 200 connected at the first interface 20, and detects the 3C equipment parameters of the 3C equipment 300 of the second interface 30; further, the control module 50 detects the electrical equipment parameters according to the electrical equipment The parameters control the operation of the first interface 20, and allow or prohibit the operation of the second interface 30 according to the electrical equipment parameters and/or 3C equipment parameters. Wherein, the control module 50 controls to allow or prohibit the operation of the second interface 20 by controlling the switch module 40 .
  • the control module 50 can determine the hardware of the electrical device 200 according to the detected electrical device parameters. Set information such as status, working status, and equipment working parameters, and control the operation of the battery pack 100 and the electrical equipment 200 based on the electrical equipment parameters; similarly, when different 3C equipment 300 is connected to the second interface 30, the control module 50 detects The parameters of the 3C equipment vary.
  • control module can timely and accurately control the battery pack to connect to the battery pack through the first interface 20 and/or the second interface 30 according to the electrical device parameters and 3C device parameters of the device connected to the first interface 20 and/or the second interface 30.
  • the charging and discharging of external devices enables the battery pack 100 to control the first interface 20 and the second interface 30 to work at the same time on the basis of being safe and controllable. Security, applicability and application scenarios.
  • the battery pack 100 when any electrical device 200 is connected to the battery pack 100 through the first interface 20, or any 3C device 300 is connected to the battery pack through the second interface 30, that is, the battery pack 100 is only connected to one external device When the battery pack 100 works normally, the external device is allowed to work. Based on this, the battery pack 100 can not only be used as a power tool battery pack alone, but also can be used as a power bank to supply power to 3C-type devices, and can also be directly charged by a 3C-type charger, which has strong versatility.
  • the control module 50 is connected to the electrical equipment parameters of the electrical equipment 200 through the detected first interface 20 of the battery pack 100 and/or the second interface 30 is connected to the 3C equipment parameters of the 3C equipment 300, and controls the first electrical equipment parameters according to the electrical equipment parameters.
  • the charging and discharging of the first interface 20 is controlled to allow or prohibit the charging and discharging of the second interface 30 by controlling the switch module 40 according to electrical equipment parameters and/or 3C equipment parameters. Therefore, on the premise of ensuring the safety performance of the battery pack 100 , the first interface 20 and the second interface 30 can work at the same time, which has strong practicability and convenience.
  • the switch module 40 includes a switch element 41 and a switch drive circuit 45 .
  • the switch driving circuit 45 is connected in series between the control module 50 and the switch element 41
  • the switch element 41 is connected in series between the battery cell group 10 and the second interface 30 .
  • the control module 50 Under a predetermined condition, the control module 50 generates a control signal to control the switch driving circuit 45 to drive the switch element 41 to be closed and open.
  • the switch element 41 When the switch element 41 is closed, the electrical path from the cell group 10 to the second interface 30 is turned on.
  • the switch element 41 can be, but is not limited to, a MOS transistor switch, a relay switch, an IGBT switch, etc.
  • the switch drive circuit 45 is provided corresponding to the switch element 41, and can be, but is not limited to, a MOS transistor switch drive circuit, a relay switch drive circuit, and an IGBT switch. drive circuit, etc.
  • the control module 50 performs cycle detection on the first interface 20 in real time.
  • the control module 50 detects that the electrical device 200 is connected to the first interface 20, at the moment when the electrical device 200 contacts the electrode pad of the first interface 20, the voltage at the electrode pad is changed, and the control module 50 can be activated.
  • the circuit forms a closed loop of power supply to the control module 50, thereby realizing continuous power supply to the control module.
  • the self-locking circuit is a technical means commonly used by those skilled in the art, and will not be described in detail here.
  • control module 50 also detects the second interface 30 in real time, and also has the function of activating the control module 50 when a device is connected to the second interface 30.
  • control module 50 also detects the second interface 30 in real time, and also has the function of activating the control module 50 when a device is connected to the second interface 30.
  • the battery pack 100 is usually provided with indicating devices such as a power indicator light, a lighting lamp, etc., which can be turned on or off by pressing or touching the corresponding button provided on the battery pack 100.
  • indicating devices such as a power indicator light, a lighting lamp, etc.
  • the operation of pressing or touching the button is performed.
  • there are many ways to activate the control module such as pressing or touching a button, wireless communication, radio frequency induction, sensor induction, and the like.
  • control module 50 After being activated and powered on, the control module 50 enters the working state, acquires electrical equipment parameters of the electrical equipment 200 at the first interface 20 , and determines the equipment type of the electrical equipment 200 according to the electrical equipment parameters.
  • control module 50 is configured to determine the device type of the electrical device according to the parameters of the electrical device; when the control module 50 determines that the electrical device 210 is connected to the first interface 20, the battery pack 10 is connected to the electrical device through the first interface 20. The electric device is discharged; when the control module 50 determines that the first interface 20 is connected to the charging device 220 , the charging device 220 charges the battery pack 10 through the first interface 20 .
  • the powered device 210 includes a high-power powered device 211 and a low-power powered device 214 .
  • each electrical equipment is preset with rated electrical equipment parameters such as rated power, rated current, rated voltage, and rated temperature.
  • rated electrical equipment parameters such as rated power, rated current, rated voltage, and rated temperature.
  • other electrical equipment parameters including hardware settings, equipment types and other electrical equipment parameters during operation.
  • the electrical equipment 210 can be specifically divided into high-power electrical equipment 211 and low-power electrical equipment 211.
  • Electrical equipment 214 and adopt different charging and discharging control strategies.
  • the first interface 20 of the battery pack 100 is connected to the electrical equipment 210
  • the control module 50 detects the electrical equipment parameters of the electrical equipment 210, and determines the connected electrical equipment according to the electrical equipment parameters Whether the 210 is a high-power electrical device 211, if it is determined that the connected electrical device 210 is a high-power electrical device 211, the control module 50 generates a prohibition command, and controls the disconnection switch module 40 to disconnect the battery pack 10 from the second interface The electrical path of the second interface 30 is thus prohibited from charging and discharging of the second interface 30 .
  • control module 50 determines that the connected electrical device 210 is the low-power electrical device 214 or the charging device 220, the control module 50 generates a permission command, and controls the closing switch module 40 to close the battery pack 10 and the second interface. 30 , thereby allowing charging and discharging operations at the second interface 30 .
  • the control module 50 detects the 3C device parameters of the 3C device at the second interface 30, and determines the device type of the 3C device 300 according to the 3C device parameters.
  • the device types of the 3C device 300 include at least a 3C load device and a 3C charging device.
  • control module 50 determines that the connected electrical device 210 is not a high-power tool according to the parameters of the electrical device, for example, when the control module 50 determines that the connected electrical device 214 is low-power, and when it determines that the second When the interface 30 is connected to a 3C load device, the control module 50 generates a permission instruction, and controls the switch module 40 to close to conduct the electrical path between the cell group and the second interface 30 , thereby allowing the cell group 10 to pass through the second interface 30 .
  • the control module 50 controls and allows charging and discharging of the second interface 30 under the condition that the first interface 20 is connected to the low-power electrical device 214 , thereby improving the safety performance and convenience of the battery pack 100 .
  • the control module 50 determines that the first interface 20 is connected to a non-high-power electrical device, that is, when the low-power electrical device 214 or the 3C charging device 320 is connected, the second interface 30 is allowed to charge and charge.
  • the discharge operation makes it possible for the first interface 20 and the second interface 30 to work simultaneously.
  • the control module 50 determines the device type of the second interface 30 connected to the 3C device.
  • the control module 50 judges that the second interface 30 is connected to the 3C electrical equipment, in this case, the discharge power required by the single first interface 20 or the single second interface 30 is not large, so the total power of the two interfaces is not large.
  • the discharge power of the battery pack is not large, so that the battery pack 100 can simultaneously discharge the two interfaces, and at the same time, can also meet the discharge power required by the two interfaces.
  • the control module 50 determines that the second interface 30 is connected to a 3C charging device, in this case, the discharge current of the single first interface 20 is relatively small, and the charging current of the 3C type charger interface is also relatively small. For the battery pack 20, the damage and influence caused by the charging and discharging of the small current can be ignored. Therefore, in this case, the battery pack 100 can meet the requirements of No.
  • the first interface 20 and the second interface 30 can be charged and discharged at the same time or discharged at the same time, thereby improving the convenience of the user and the discharge safety performance of the battery pack.
  • the control module 50 when the control module 50 determines that the first interface 20 is connected to the charging device 220, the control module 50 detects the electrical device parameters of the charging device 220 and allows the charging device 220 to charge the battery pack 10.
  • the electrical device parameters at least include parameters such as the model of the charging device, the maximum allowable charging current, the maximum allowable charging voltage, the minimum allowable charging voltage, and the maximum/low allowable charging temperature.
  • the electrical equipment parameters include at least the model of the electrical equipment, the maximum allowable discharge current, the maximum allowable discharge voltage, the minimum allowable discharge voltage, and the maximum/low allowable discharge temperature. and other parameters.
  • control module 50 detects the 3C device parameters of the second interface 30, and determines the device type of the 3C device 300 according to the 3C device parameters. If the control module 50 determines that the 3C device 300 is the 3C electrical device 310 , the control module 50 generates a permission signal to control the switch module 40 to close, so as to conduct the electrical path between the cell group 10 and the second interface 30 , thereby allowing the cell group 10 The 3C electrical equipment is powered through the second interface. Thus, the control module 50 controls and allows the discharge operation of the second interface 30 under the condition that the first interface 20 is connected with the charging device 220 .
  • the 3C device parameters include at least the 3C device model, maximum allowable discharge current, minimum allowable discharge voltage, maximum/low allowable discharge temperature, rated power and other parameters.
  • control the control module 50 determines that the connected 3C device 300 is the 3C charging device 320, control the The module 50 controls the switch module 40 to be closed to allow the 3C charging device 320 to charge the battery pack 10 through the second interface 30; The charging current I 3C for charging the core pack 10 .
  • the control module 50 pre-stores the maximum allowable charging current I MAX of the battery pack 100 , and the control module calculates the sum of the charging current I of the charging device 220 and the charging current I 3C of the 3C charging device 320 with the pre-stored maximum allowable charging Comparing the currents I MAX , if the sum of the charging currents I and I 3C is higher than the maximum allowable charging current I MAX , the control module 50 generates a prohibition signal to control the switch module 40 to turn off to prohibit the 3C charging device 320 from charging the battery pack 10 .
  • the control module 50 controls and allows the charging operation of the second interface 30 under the condition that the maximum total charging current is constrained when the first interface 20 is connected with the charging device 220 .
  • the control module 50 determines that the first interface 20 is connected to the charging device 220, it performs fine control according to the device type of the 3C device connected to the second interface 30, so that the first interface 20 and the second interface 30 Simultaneous work becomes possible.
  • the charging device 220 charges the battery pack 10 through the first interface 20, first, if the control module 50 determines that the second interface 30 is connected to the 3C load device, in this case, the discharge current of the second interface 30 and the required discharge The power is relatively small, and its magnitude is relatively small relative to the charging current of the charging device, so the damage and impact on the battery pack 10 can also be ignored.
  • the second interface 30 is connected to a 3C charging device, in this case, the maximum allowable charging current I MAX that the battery pack 10 can withstand needs to be considered.
  • the first interface 20 and the second interface 30 are connected in parallel, which are two independent electrical circuits. Therefore, when the two interfaces are connected to the charging device at the same time, the current value applied to the battery pack 10 is superimposed. Therefore, once the sum of the total charging currents applied by the two charging devices to the battery pack 10 is higher than the maximum allowable charging current I MAX of the battery pack 10 , the control module 50 will prohibit the 3C charging device from the second interface 30 The battery pack 10 is charged.
  • the 3C charging device is controlled to allow the battery pack 10 to be charged. Therefore, under the premise of safety, the requirement that the first interface 20 and the second interface 30 of the battery pack 100 can be charged and discharged or charged at the same time is realized, which further improves the universality and safety performance of the battery pack 100 .
  • the control module 50 will detect the corresponding device of the corresponding interface parameter.
  • the control module 50 also performs detection and control in the aforementioned manner, that is, when detecting the electrical equipment of the first interface 20 After the parameters and the parameters of the 3C device at the second interface 30 are determined, the charging and discharging at the first interface 20 are controlled, and the operation at the second interface 30 needs to be continued to be allowed or prohibited. Wherein, when the control module 50 prohibits the operation of the second interface 20, the ongoing work on the second interface will be disconnected.
  • the electrical equipment parameters at least include parameters characterizing the type of electrical equipment, and the parameters characterizing the electrical equipment type include but are not limited to terminal setting parameters, equipment type, voltage, current, temperature, power, and electrical parameters rate of change.
  • the control module 50 accurately judges the type of electrical equipment connected to the first interface 20 through the detected parameters that characterize the type of electrical equipment, so as to realize real-time control of the charging and discharging of the second interface 30, so as to achieve the effect of safety and convenience. .
  • the control module 50 determines the device type of the electrical device according to the detected parameters representing the type of the electrical device; when the control module 50 determines that the first interface 20 is connected to the electrical device 210, if the control module 50 When judging that at least one communication terminal is set in the hardware settings of the electrical equipment, or judging that at least one parameter of the electrical equipment parameters satisfies a preset condition, for example, when at least one parameter is not less than a preset threshold, judge that the electrical equipment 210 It is high-power electrical equipment 211 .
  • the electrical equipment parameters include equipment type, voltage, current, temperature, power and other parameters; specifically, the electrical equipment parameters include at least parameters characterizing the electrical equipment type, and the parameters characterizing the electrical equipment type at least include terminal setting parameters, equipment type , rate of change of voltage, current, temperature, power and electrical parameters. For example, when the power of the electrical device 210 is not less than the preset device power, the motor power of the electrical device 210 is not less than the preset motor power, or the electrical device 210 is configured with a motor, etc., the electrical device 210 is determined to be For high-power electrical equipment.
  • control module 50 may further include a detection unit, the control module 50 detects electrical equipment parameters of the electrical equipment, and further controls the operation of the second interface 30 according to the electrical equipment parameters. Specifically, when the control module 50 judges that the electrical equipment parameters such as voltage, current, power, temperature or the rate of change of the electrical parameters are not less than the preset value, it judges that the electrical equipment is the high-power electrical equipment 211, and controls the disconnection switch module to The charging and discharging of the second interface 30 is prohibited; when the control module 50 judges that the electrical equipment parameters such as voltage, current, power, temperature or the rate of change of the electrical parameters are not higher than the preset value, it is judged that the electrical equipment is not a high-power electrical equipment, The switch module is controlled to be closed to allow charging and discharging of the second interface 30 , that is, to allow the working of the 3C equipment while allowing the electrical equipment to work.
  • the control module 50 judges that the electrical equipment parameters such as voltage, current, power, temperature or the rate of change of the electrical parameters are not less than
  • control module 50 detects electrical equipment parameters at the first interface 20, and determines the equipment type of the electrical equipment 210 according to the parameters representing the electrical equipment type, such as terminal setting parameters.
  • the high-power electrical equipment 211 usually has large power, working current and heat generation, and has high requirements on the performance of the battery pack 100, so it is easy to damage the battery pack 100; in order to ensure that the battery pack 100 and The safety performance of the high-power electrical equipment 211.
  • the high-power electrical equipment 211 will also be provided with at least one communication terminal for the connection between the battery pack 100 and the high-power electrical equipment 211. signal transmission.
  • the power of the low-power electrical equipment 214 is usually small, so both the operating current and the heat generation are small, so the requirements for the performance of the battery pack 100 are also small; in addition, the low-power electrical equipment 214 is usually portable, Due to the compact form, only the positive terminal of the power supply and the negative terminal of the power supply are usually set at the interface.
  • the terminal setting parameter also becomes a determinable parameter representing the device type of the electrical device 210 .
  • the terminal setting parameters detected by the control module 50 indicate that the electrical equipment 210 has no communication terminals, it is determined that the electrical equipment 210 is the low-power electrical equipment 214; when the terminal setting parameters detected by the control module 50 indicate that the electrical equipment 210 has at least
  • one communication terminal is used, obtain more electrical equipment parameters of the electrical equipment 210 through the communication terminal, and accurately determine whether the electrical equipment 210 is a high-power electrical equipment 211 or a low-power electrical equipment according to other parameters representing the electrical equipment type in the electrical equipment parameters. device 214.
  • control module 50 may further include an AFE chip, the AFE chip is connected to each cell 10 of the cell group 10 , and is used to detect the single cell voltage of each cell 10 and determine the voltage of each cell In the balanced state, when it is judged that the difference between the voltages of each single cell exceeds a preset value, and when it is judged that the single cell is unbalanced, the battery pack 100 enters the unbalanced fault state.
  • the AFE chip can also be used to detect various operating parameters of the battery pack 100, such as charging current, discharging current, charging voltage, discharging voltage, etc. When the detected operating parameters exceed the preset values, it is determined that the battery pack has entered a fault.
  • the battery pack fault may further include: an over-discharge fault, an over-charge fault, an over-current fault, an over-temperature fault, a low-temperature fault, and the like.
  • the first interface 20 of the battery pack 100 includes power terminals 21 , 24 and two communication terminals 22 , 23 , which are usually provided in the form of electrode sheets or other conductive connectors. at the interface.
  • the positive terminal 21 of the power supply and the negative terminal 24 of the power supply are respectively electrically connected to the positive terminal and the negative terminal of the battery pack 100 .
  • the communication terminal 22 can be set as a digital communication terminal, capable of digital communication; the communication terminal 23 can be set as an analog communication terminal, used for analog communication.
  • the electrical device 210 is matched with the battery pack 100 according to specific interface terminal settings of the electrical device 210 .
  • the battery pack 100 and the electrical equipment communicate with each other through digital communication terminals to transmit various electrical equipment parameters, such as equipment type, working requirements of the electrical equipment, battery packs Status parameters, battery pack fault status, electrical equipment equipment fault status and other signals. Therefore, the information transmitted by the battery pack 100 through the digital communication terminal can be used to know whether the electrical device is an electrical device or a charging device, specifically, whether the electrical device is a high-power electrical device or a low-power electrical device. Charge management or discharge management.
  • the battery pack can also send a battery pack fault status signal to the electrical device through the analog communication terminal, or an analog signal representing the battery pack status parameter.
  • the signal of the digital communication terminal and the signal of the analog signal terminal can make the electrical equipment stop working in time, realize the double protection of the digital signal and the analog signal, and effectively improve the safety of the electrical equipment and the battery pack when working together.
  • the interface of the electrical device 210 is provided with at least a positive power supply terminal 21 ′ and a negative power supply terminal 24 ′ corresponding to the positive power supply terminal 21 and the negative power supply terminal 24 of the first interface 20 of the battery pack 100 . mated to form an electrical circuit with the battery pack 100 .
  • a communication terminal may also be provided on the interface 20' of the electrical device 210, for example, a digital communication terminal 22', an analog communication terminal 23', or both a digital communication terminal 22' and a separate digital communication terminal 22' are provided. Analog communication terminal 23'.
  • the control module 50 may be activated. It can be understood that, if the battery pack 100 is further provided with an activation button, the activation of the control module 50 can also be realized by triggering the activation case.
  • the activation method of the control module 50 herein is not limited to the above examples, and those skilled in the art can realize the activation of the control module 50 according to circuit principles.
  • the control module 50 After the control module 50 is activated, the electrical equipment parameters of the electrical equipment 200 are detected, and the terminal setting state of the electrical equipment is identified according to the electrical equipment parameters. If the control module 50 judges that the electrical equipment 200 is not provided with a communication terminal, it is judged that the electrical equipment 200 is a low-power electric tool 214 or the charging device 220 , controlling the battery pack 100 to supply power to the low-power electrical device 214 through the first interface 20 , or charging the battery pack 100 by the charging device 220 , while controlling and allowing the second interface 30 to charge and discharge. If the control module 50 determines that the electrical equipment 200 is provided with at least one communication terminal, more electrical equipment parameters of the electrical equipment 200 can be acquired through the communication terminal.
  • the battery pack 100 can establish digital communication with the electrical equipment 200 through the digital communication terminal 22 to obtain specific parameter information of the electrical equipment 200; if the electrical equipment 200 is provided with the analog signal terminal 23', The battery pack 100 can obtain the status information of the electrical equipment 200 through the analog signal terminal 23, for example, the electrical equipment status is normal, the status is abnormal, etc.; if the electrical equipment 200 is provided with both the digital signal terminal 22' and the analog signal terminal 23', the battery pack 100 can also communicate simultaneously through the digital communication terminal 22 and the analog communication terminal 23 .
  • the interface 20' of the electrical device 200 is provided with a positive power supply terminal 21', a negative power supply terminal 24', a digital communication terminal 22' and an analog communication terminal 23', when the battery When the package 100 is connected to the electrical device through the first interface 20, the four terminals are matched to achieve electrical connection.
  • the control module 50 can communicate with the electrical device 200 through both the digital communication terminal and the analog communication terminal, that is, the battery pack 100 and the electrical device 200 can communicate in both digital and analog ways.
  • the communication terminal may be a digital communication terminal. If any one of the terminal 22' or the analog communication terminal 23' is used, the control module 50 communicates with one of the communication terminals 22' or 23' of the electrical equipment.
  • the control module 50 communicates with the electrical equipment 200 by means of digital communication.
  • the control module 50 first sends a digital handshake signal, and if it can receive a handshake reply signal from the electrical device 200, it is determined that the electrical device 200 is provided with a digital communication terminal 22' to support digital communication. Further, the control module can obtain the electrical equipment parameters of the electrical equipment 200 through the digital communication terminal 22', determine the equipment type of the electrical equipment 200 according to the electrical equipment parameters, and control the charging and discharging of the electrical equipment 200 according to the electrical equipment parameters.
  • the control module 50 determines through the digital communication terminal 22 ′ that the electrical device is the charging device 220 , the control allows the battery device 220 to charge the battery pack 10 , and the control module 50 sends the working parameters of the battery pack 100 to the charging device 220 , such as voltage, current, temperature, power, etc., so that the charging device 220 can accurately and safely control the charging of the battery pack 10 according to the above-mentioned working parameters.
  • the control module 50 obtains electrical equipment parameters of the charging device 220 such as charging current, temperature, etc. through the digital communication terminal 22 ′, so that the working state of the dedicated charging device 220 can be judged in time to avoid the battery pack 100 caused by the failure of the charging device 220 . Damage has occurred.
  • the control module 50 communicates with the electrical equipment 200 in an analog communication manner.
  • the control module 50 first sends a digital handshake signal. If the handshake reply signal of the electrical equipment 200 is not received within a predetermined time or a non-corresponding handshake reply signal is received, it is determined that the electrical equipment 200 does not support digital communication, and the analog communication terminal 23 is selected. to communicate. Alternatively, the control module 50 detects the level parameters at the digital communication terminal 22 and the analog communication terminal 23 at the first interface 20 to determine whether the electrical device 200 is connected to the corresponding communication terminal.
  • the specific implementation approach is not limited to the above manner.
  • level parameter values can be preset, such as a specific level parameter value. Characterize a specific working state, such as setting specific level values that characterize fault states including overcharge fault, overdischarge fault, overcurrent fault, overtemperature fault, low temperature fault, unbalanced fault, etc. respectively.
  • the control module 50 detects the identification resistance of the electrical device 200 through the analog communication terminal 23 to identify the device model of the electrical device, and controls the charging or discharging of the battery pack 10 according to the identified device model.
  • any one of the battery pack 100 or the electrical equipment 200 fails, it sends an analog signal representing the abnormality to the other party through the analog communication terminal 23 or 23', thereby controlling the stop of charging and discharging, so as to control the battery pack 100 to stop charging and discharging.
  • the safety performance of the battery pack 100 is improved.
  • the control module 50 will determine that the electrical device 200 is a low-power tool, and use this to control the work of the two interfaces of the battery pack 100. The specific method is consistent with the foregoing description, It is not repeated here.
  • electrical equipment 200 connected to the first interface 20 is only provided with power terminals 21 ′ and 24 ′, such electrical equipment 200 can generally be understood as a simple gadget that does not require real-time control, such as an electric soldering iron , scissors, etc. These tools are usually less powerful.
  • the battery pack 100 further includes a second interface control circuit 60 , which is connected to the second interface 30 and is electrically connected to the switch module 40 and the control module 50 .
  • the second interface control circuit 60 responds to the device access of the second interface 30 in real time, and when a device is connected to the second interface 30, the second interface control circuit 60 and the control module 50 are activated, and the second interface control circuit 60
  • the 3C device parameters of the 3C device 300 at the second interface 30 are detected, and the judgment results of the 3C device parameters and the corresponding parameters are transmitted to the control module 50, thereby realizing the detection of the 3C device parameters by the control module 50.
  • the control module 50 generates a control instruction for the data acquired from the second interface control circuit 60 and sends it to the second interface control circuit 60 to control the charging and discharging of the second interface 30 .
  • the second interface control circuit 60 detects the parameters of the 3C device and determines that it is the 3C load device 310, and transmits the type of the 3C load device, the parameters of the 3C device, etc. to the control module 50, and controls the The module 50 correspondingly generates a discharge control command and sends it to the second interface control circuit 60 , and controls the switch module 40 to close the electrical circuit that conducts the cell group to the second interface control circuit 60 , thereby controlling the power supply to the 3C load device 310 .
  • the 3C device 300 is the 3C charging device 320, the type of the 3C charging device, the parameters of the 3C device, etc.
  • control module 50 correspondingly generates a charging control command and sends it to the second interface control circuit 60,
  • switch module 40 is controlled to allow or prohibit the charging of the battery pack 10 by the 3C charging device 320 .
  • the second interface control circuit 60 may include a PD chip and a DC-DC buck-boost circuit, wherein the PD chip and the DC-DC buck-boost circuit can be implemented using a SOC integrated chip, or can be implemented using a single SOC integrated chip. Two discrete chips are implemented.
  • the second interface control circuit 60 supports the fast charging protocol.
  • the second interface control circuit 60 determines that the 3C device supports fast charging or allows fast charging according to the parameters of the 3C device, it sends the judgment result to the control module 50, and the control module 50 is in the battery pack. If the 100 parameter allows, the second interface control circuit 60 can be controlled to quickly charge the 3C device through the second interface 30, or the 3C device can quickly charge the battery pack 100 through the second interface.
  • the second interface control circuit 60 also supports other protocols common to other 3C-type interfaces, and is not limited to the fast charging protocol mentioned above.
  • the second interface control circuit 60 may be integrated into the control module 50.
  • the second interface control circuit 60 is taken as the second main control module 52, and the second interface control circuit 60 is not provided.
  • the main control module is formed as a first main control module 51 . That is, the control module 50 may include a first main control module 51 and a second main control module 52.
  • the first main control module 51 and the second main control module 52 are electrically connected and can communicate with each other, wherein the first main control module 51 is used to control the charging and discharging work of the first interface 20, and the second main control module 52 is used to control the charging and discharging work of the second interface 30; when the second interface 30 is connected to the 3C device, the second main control module 52 is based on the The 3C device parameters of the 3C device connected to the first interface 20 start the communication with the first main control module 51 .
  • the second main control module 52 sends to the first main control module 51 work request information on whether to allow the current work to be started.
  • the first main control module 51 sends the second main control module 52 in response to the work request information.
  • Job response information that allows work requests or disallows work requests.
  • first main control module 51 and the second main control module 52 may be two independently set chips, or may be one integrated chip; in addition, each functional module mentioned in this application may be Each independent function chip can also be integrated according to specific requirements by selecting specific functional modules.
  • the second interface 30 is a USB Type C interface
  • the second interface control circuit 60 communicates between the control modules 50 by means of UART or I2C.
  • the second interface control circuit 60 is usually a control circuit corresponding to the type of the second interface 30.
  • the second interface control circuit 60 is correspondingly set to PD control. module.
  • the main control module 50 has a standby state and a working state; in the standby state, the power consumption of the main control module 50 is relatively low.
  • the main control module 50 is in a standby state.
  • the main control module 50 is activated, and the main control module 50 is switched from the standby state to the working state.
  • main control module 50 detects any failure of the battery pack 100 or receives any signal representing the failure of the battery pack 100 , the main control module 50 enters a standby state.
  • the switch module 40 further includes a second switch module, the second switch module is electrically connected between the second interface control circuit 60 and the second interface 30, and is configured to receive the second interface control module control signal to control the operation of the second interface 30 .
  • the control module 50 determines that there is no device access to the second interface 30 or that the second interface 30 and the battery cell group 10 are not suitable for matching operation, the control module 50 controls to disconnect the second interface control circuit.
  • the second switch module is disconnected to disconnect the power consumption of part of the circuit, thereby reducing the power consumption of the entire control module 50; in the standby state, the control module 50 still maintains The access identification of the interface 20 and the second interface 30 only maintains a weak current supply, and the power consumption is small.
  • the electrical equipment connected to the first interface 20 includes a first electrical equipment and a second electrical equipment.
  • the interface of the first electrical device is different from that of the second electrical device.
  • the first electrical device can be directly connected to the first interface of the battery pack 100
  • the second electrical device can be connected to the first interface through an adapter.
  • the battery pack 100 can be matched with the chute on the adapter through the guide rail, and then the adapter can be connected to the second electrical device for matching use.
  • the reason why the second electrical device cannot be directly connected to the battery pack may be that the mechanical structure does not match, or the connection terminals of each interface configuration do not match, or the mechanical structure does not match and the connection terminals do not match.
  • the battery pack 100 is connected with the electric device 210 or the charging device 220 through the adapter 400 , so as to discharge the electric device 210 or charge the charging device 220 .
  • the shape of the adapter 400 is also not fixed, the battery pack 100 is matched with the chute on the adapter through the guide rail, and the adapter 400 is provided with a cable to be used with the second electrical device.
  • FIG. 13 shows some of the electrical devices that can be mated to the battery pack 100 by connecting the adapter 400 through a cable.
  • This embodiment provides a charging and discharging control method for a battery pack.
  • the battery pack includes: a battery pack; a first interface for detachably connecting to electrical equipment; and a second interface for detachably connecting to 3C equipment; a switch module, which is electrically connected between the cell group of the battery pack and the second interface.
  • the charging and discharging control method of the battery pack is applicable to the battery pack provided in the first embodiment, and is also applicable to other battery packs with similar structures.
  • the charging and discharging control method of the battery pack includes the following steps:
  • Step S100 Detect electrical equipment parameters of the electrical equipment 200 of the first interface 20 .
  • Step S200 Detecting 3C device parameters of the 3C device 300 of the second interface 30 .
  • Step S300 Control the operation of the first interface 20 according to the parameters of the electrical equipment.
  • Step S400 Control the switch module 40 according to the electrical device parameters and/or the 3C device parameters to select to allow or prohibit the second interface 30 from working.
  • the charging and discharging control method of the battery pack provided in this embodiment belongs to the same inventive concept as the battery pack provided in the first embodiment.
  • the battery pack and the above steps please refer to the specific content in the first embodiment, which will not be repeated here. .
  • the electrical equipment parameters of the electrical equipment 200 of the first interface 20 are detected, the operation of the first interface 20 is controlled according to the electrical equipment parameters, and the 3C equipment 300 of the second interface 30 is detected.
  • the switch module 40 is controlled to allow or prohibit the second interface 30 from working. That is, by detecting the electrical device parameters and/or 3C device parameters of the device connected to the first interface 20 and/or the second interface 30, the battery pack can be controlled to charge the external device through the first interface 20 and/or the second interface 30.
  • Discharge on the basis of ensuring the safety and controllability of the battery pack 100, enables the first interface 20 and the second interface 30 to work at the same time, satisfies the user's requirement for the two interfaces to work at the same time, and improves the safety and applicability of the battery pack 100. properties and application scenarios.
  • the step of controlling the first interface 20 according to the electrical equipment parameters includes: judging the equipment type of the electrical equipment 200 according to the electrical equipment parameters, where the equipment types of the electrical equipment include electrical equipment and charging equipment. equipment; when it is determined that the electrical equipment is the electrical equipment 210, the battery pack 10 is controlled to supply power to the electrical equipment 210 through the first interface 20; when it is determined that the electrical equipment is the charging equipment 220, Control the charging device 220 to charge the battery pack 10 through the first interface 20 .
  • the first interface 20 is connected to the electrical device 210 or the charging device 220, which is an electrical device and a charger that match the standard of the power tool battery pack 100. Therefore, when the first interface 20 is connected to the standard matching When the device is installed, the battery pack 100 performs the action of discharging or charging correspondingly.
  • control method provided in this embodiment further includes: the electrical equipment includes a high-power electrical equipment and a low-power electrical equipment, and determining whether the electrical equipment 210 is a High-power electrical equipment 211 ; if it is determined that the high-power electrical equipment 211 is connected, the switch module 40 is turned off to prohibit the operation of the second interface 30 .
  • the switch module 40 is closed to allow charging and discharging at the second interface 30 .
  • the first interface 20 when the first interface 20 is connected to a high-power electrical device 211, in order to meet the output power requirements of the high-power electrical device 211 and consider the battery life, it is necessary to minimize the power output of other interfaces. , therefore, the charging and discharging operation of the second interface 30 will be prohibited.
  • the high-power electrical equipment is usually in a relatively harsh working environment, and the user has less demand for the second interface, so it is more important to ensure the power output of the first interface 20 .
  • control method provided in this embodiment further includes: when it is determined that the electrical device 210 is not the high-power electrical device 211, that is, the low-power electrical device 214, according to the electrical device parameters, then further Detecting the 3C device parameters of the 3C device 300 connected to the second interface 30, and determining the device type of the 3C device 300 according to the 3C device parameters; wherein, the device types of the 3C device 300 include at least 3C load devices and 3C devices charging equipment.
  • the switch module 40 is controlled to be closed to allow the battery cell group 10 to supply power to the 3C load device 310 through the second interface 30;
  • the switch module 40 is controlled to be closed to allow the 3C charging device 320 to charge the battery pack 10 through the second interface 30 .
  • the charging and discharging of the second interface 30 is not controlled; second, the power supply of the second interface 30 is directly prohibited. Therefore, in the first case, when the output power required by the first interface 20 is relatively large, the second interface 30 is not controlled and can still output power externally, which will directly affect the performance of the battery pack 100 to the high-power electrical equipment. The output power is insufficient, resulting in insufficient power to meet working demands, or shortening the battery life of the battery pack 100 . In the second case, if the output power required by the first interface 20 is small, it can support the normal power supply to the second interface 30. At this time, if the power supply of the second interface 30 is directly prohibited, the user will not be able to supply power to the second interface 30 at the same time The power supply to the 3C load device is realized by using the second interface 30, thus causing inconvenience.
  • the electrical equipment 200 connected to the first interface 20 detects the parameters of the electrical equipment and determines whether it is a high-power electrical equipment 210 .
  • Conditionally selecting whether to allow the operation of the second interface 30 not only meets the requirements for high power output, but also supports the simultaneous operation of the two interfaces when the battery pack 100 is in low power output, which not only improves the convenience and applicability, The safety and endurance of the battery pack 100 are also improved.
  • the two interfaces are allowed to work at the same time, that is, to allow simultaneous discharge, or to allow Charge and discharge.
  • simultaneous discharging and discharging while charging under such conditions a detailed description has been given in the previous embodiment, and details are not repeated here.
  • the switch module 40 is controlled according to the 3C device parameters to allow or prohibit the second interface 30 steps of work, including:
  • the switch module 40 is closed to allow the cell group 10 to supply power to the 3C load device 310 through the second interface 30 .
  • the 3C device parameters of the second interface 30 are further detected. If the second interface 30 is connected to the 3C load device 310, it is allowed to supply power to the 3C load device, that is, under certain circumstances, the two interfaces are allowed to be charged and discharged at the same time.
  • control method provided in this embodiment further includes: if the second interface 30 is connected to the 3C charging device 320,
  • the switch module 40 When it is judged that the sum of the first charging current I and the second charging current I 3C is higher than the charging current threshold I MAX of the battery pack 10 , the switch module 40 is turned off to prohibit the 3C charging device 320 from passing through the second charging current.
  • the interface 30 charges the battery pack 10 .
  • the charging device when the two interfaces of the battery pack 100 are connected to the charging device, it is necessary to detect the charging currents I and I of the battery pack 10 by the two charging devices respectively , and compare the sum of the two charging currents, I + If the maximum charging current threshold I MAX pre-stored by the I 3C and the battery pack 100 is higher than the maximum charging current threshold I MAX , in order to ensure that the battery pack 10 is not damaged, the charging of the second interface 30 needs to be disconnected.
  • the charging rate can be increased to a certain extent, and when the battery pack 100 detects that the charging current is too large, it will also disconnect the charging of the additional 3C charging equipment in time to ensure the safety of the battery pack.
  • the charge-discharge control method provided in this embodiment further includes:
  • the electrical equipment parameters include at least parameters characterizing the type of electrical equipment, and the parameters characterizing the electrical equipment type include at least terminal setting parameters, equipment type, voltage, current, temperature, power, and rate of change of electrical parameters.
  • the charging and discharging control method provided in this embodiment further includes: judging the device type of the electrical device according to the parameter representing the electrical device type; when the electrical device is the electrical device 210,
  • the electrical equipment 210 is a high-power electrical equipment 211; wherein the electrical equipment parameters at least include equipment type, Parameters such as voltage, current, temperature, power, etc.; specifically, electrical equipment parameters include at least parameters characterizing the type of electrical equipment, and the parameters characterizing the type of electrical equipment include at least terminal setting parameters, equipment type, voltage, current, temperature, power and The rate of change of electrical parameters. For example, when the power of the electrical equipment is not less than the preset power, or the motor power of the electrical equipment is not less than the preset motor power, or the electrical equipment is equipped with a motor, the electrical equipment is determined as a high-power electrical equipment.
  • the terminal setting parameter is used as a parameter representing the type of electrical equipment, and if it is recognized that the electrical equipment 210 is not provided with a communication terminal, it is determined that the electrical equipment 210 is a low-power electrical equipment 211, and the control allows the battery pack 100 Charging and discharging of the second interface 30 ; if it is recognized that the electrical device 210 is provided with at least one communication terminal, the communication terminal is used to realize signal transmission between the battery pack 100 and the electrical device 210 .
  • the control module 50 detects that the level of the analog communication terminal 23 changes, or detects a level signal representing a specific state, it is determined that the electrical equipment 200 is provided with the analog communication terminal 23', and the signal is transmitted through the analog communication terminal 23;
  • the battery pack 100 sends a handshake signal through the digital communication terminal 22.
  • the handshake reply signal from the electrical device 200 is not received within a predetermined time or a non-corresponding handshake reply signal is received, it is determined that the electrical The device 200 is not provided with the digital communication terminal 22 ′; otherwise, if the handshake is successful, communication is performed through the digital communication terminal 22 , and electrical device parameters are obtained based on the communication to control the charging and discharging of the first interface 20 and the second interface 30 .
  • the charging and discharging control provided in this embodiment is Methods also include:
  • Detect the connection status of the first interface 20 and/or the second interface 20 if it is determined that the first interface 20 and/or the second interface 30 is connected to the device, establish communication with the electrical device 200 and/or the 3C device 300, and detect Corresponding electrical device parameters and/or 3C device parameters of the access device of the first interface 20 and/or the second interface 30 .
  • control module 50 will judge and identify the device access of the first interface 20 and the second interface 30. When there is device access, the control module 50 will be activated through the communication terminals 23 and/or 24, and the control module 50 will be connected to Corresponding devices establish communication through communication terminals 23 and/or 24 .
  • the first interface 20 of the battery pack 100 is provided with a positive power supply terminal 21 , a negative power supply terminal 24 , a digital communication terminal 22 and an analog communication terminal 23 .
  • the interface 20' of the electrical equipment is correspondingly provided with a power supply positive terminal 21', a power supply negative terminal 24', a digital communication terminal 22' and an analog communication terminal 23'.
  • the control module 50 communicates with the electrical device 200 in both digital and analog ways
  • the control module 50 communicates with the electrical device 200 in a corresponding manner.
  • the electrical equipment 200 is not provided with a communication terminal but only has a power supply terminal, it is determined that the electrical equipment 200 is a low-power tool for control.
  • the determination method and specific communication control please refer to the description of Embodiment 1, and details are not repeated here.
  • Step S500 Identify the access state of the electrical device 200 at the first interface 20; the control module 50 cyclically monitors the device access situation at the first interface 20, and immediately executes S502 if it is identified that the electrical device 200 is connected.
  • Step S502 After the first interface 20 is inserted into the device, the electrical device parameters of the inserted electrical device 200 are detected, and the device type of the electrical device 200 is determined according to the electrical device parameters. According to different device types, different charge and discharge control strategies are selected for the first interface 20 and the second interface 30 .
  • step S510 is performed; if it is determined that the electrical device 200 is a non-high-power electrical device, step S520 is performed; Step S560.
  • Step S512 When it is judged that the first interface 20 is connected to the high-power electrical equipment 211, the control module 50 obtains the electricity demand of the high-power electrical equipment 211 according to the detected electrical equipment parameters, and detects the parameters of the battery pack to determine whether it is suitable for Discharging, if the cell group 10 is suitable for discharging, the control cell group matches the power demand of the high-power electrical equipment 211 to control the cell group to discharge externally through the first interface 20 , and then proceed to step S514 .
  • the battery pack 100 outputs electrical energy to the first interface 20 at full power.
  • Step S514 The control module 50 outputs a prohibition instruction, or directly controls, to disconnect the switch module 40, thereby prohibiting the charging and discharging of the second interface 30, and preventing the high-power electrical equipment 211 from powering the second interface 30 during operation.
  • the damage of the path also ensures the power supply demand of the high-power electrical equipment 211 .
  • Step S522 When it is judged that the first interface 20 is connected to a non-high-power electrical device, such as a low-power electrical device 214, the control module 50 learns the electricity demand of the low-power electrical device 214 according to the detected electrical device parameters, and detects The parameters of the battery pack determine whether it is suitable for discharging. If the battery pack 10 is suitable for discharging, control the battery pack 10 to match the electricity demand of the low-power electrical equipment 214, control the battery pack 10 to discharge externally through the first interface 20, and enter the step at the same time. S523.
  • a non-high-power electrical device such as a low-power electrical device 214
  • the control module 50 learns the electricity demand of the low-power electrical device 214 according to the detected electrical device parameters, and detects The parameters of the battery pack determine whether it is suitable for discharging. If the battery pack 10 is suitable for discharging, control the battery pack 10 to match the electricity demand of the low-power electrical equipment 214, control the battery pack 10 to discharge externally through the
  • Step S523 When the low-power electrical device 214 is connected to the first interface 20, the operation of the second interface 30 is allowed.
  • the control module identifies the device access status of the second interface 30, and if there is no device access, continues the loop detection, if the 3C device 300 is connected, detects the 3C device parameters of the 3C device 300, and determines the device type of the 3C device 300. If it is determined that the 3C device 300 is the 3C load device 310, the process proceeds to step S524; if it is determined that the 3C device 300 is the 3C charging device 320, the process proceeds to step S526.
  • Steps S524-S525 when it is determined that the 3C device 300 is the 3C load device 310, output a permission instruction to close the electrical path between the cell group 10 and the second interface 20.
  • the control module 50 obtains the electricity demand of the 3C load device 310 according to the detected 3C device parameters, and detects the parameters of the cell group to determine whether it is suitable for discharging.
  • the control allows the battery pack 10 to discharge the 3C load device through the second interface 30 according to the power demand; if the control module 50 obtains the full signal of the 3C load device 310 according to the detected 3C device parameters, the control module 50 enters the standby mode.
  • Steps S526-S527 when it is determined that the 3C device 300 is the 3C charging device 320, output a permission command to close the electrical path between the battery pack 10 and the second interface 20.
  • the control module 50 obtains the charging capability of the 3C charging device 320 according to the detected 3C device parameters, and detects the parameters of the battery pack to determine whether it is suitable for charging. If the battery pack 10 is suitable for charging, it controls the charging capability of the 3C charging device 320 and the battery cells Matching the charging needs of the group 10, the control allows the second interface 30 to accept charging from a 3C charging device.
  • Step S562 When it is determined that the first interface 20 is connected to the charging device 220, the parameters of the battery pack are detected to determine whether the battery pack 10 is suitable for charging. The battery pack 10 is charged; at the same time, step S563 is entered.
  • Step S563 When the charging device 220 is connected to the first interface 20, the operation of the second interface 30 is allowed.
  • the control module identifies the device access status of the second interface 30. If there is no device access, the loop continues to detect. If the 3C device 300 is connected, it detects the 3C device parameters of the 3C device 300 and determines the device type of the 3C device. If it is determined that the 3C device 300 is the 3C load device 310, the process proceeds to step S570; if it is determined that the 3C device 300 is the 3C charging device 320, the process proceeds to step S580.
  • Steps S570-S572 when it is determined that the 3C device 300 is the 3C load device 310, output a permission instruction to close the electrical path between the battery cell group 10 and the second interface 20.
  • the control module 50 obtains the electricity demand of the 3C load device 310 according to the detected 3C device parameters, and detects the parameters of the cell group to determine whether it is suitable for discharging.
  • the control allows the battery pack 10 to discharge the 3C load device through the second interface 30 according to the power demand; if the control module 50 obtains the full signal of the 3C load device 310 according to the detected 3C device parameters, the control module 50 enters the standby mode.
  • Steps S580-S582 when it is determined that the 3C device 300 is the 3C charging device 320, output a permission command to close the electrical path between the battery cell group 10 and the second interface 20. At the same time, it goes to step S583.
  • Steps S583-S584 Detect the first charging current I 3C of the battery pack 10 charged by the charging device 220, that is, the dedicated charger 220, and simultaneously detect the charging current I 3C charged by the 3C charging device 320 to the battery pack 10.
  • the sum of the charging current I of the charger 220 and the charging current I 3C of the 3C charging device 320 is compared with the pre-stored maximum allowable charging current I MAX , and the operation of the second interface 30 is controlled according to the comparison result, and the process proceeds to step S586/S588.
  • Step S586 if the sum of the charging currents I and I 3C is not higher than the maximum allowable charging current I MAX , output an enable command to control and allow the second interface 30 to accept charging from the 3C charging device.
  • Step S588 if the sum of the charging currents I and I 3C is greater than the maximum allowable charging current I MAX , a prohibit command is output, and the control prohibits the second interface 30 from accepting charging from the 3C charging device.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请涉及电池包技术领域,具体公开一种电池包及其充放电控制方法。电池包包括第一接口,用于可拆卸地连接电气设备;包括第二接口,用于可拆卸地连接3C设备。电池包还包括开关模块和控制模块,控制模块检测第一接口接入设备的电气设备参数以及第二接口接入设备的3C设备参数,并根据电气设备参数以控制电气设备的充放电,进一步根据电气设备参数和/或3C设备参数控制开关模块,以控制允许或禁止3C设备的充放电。当第一接口和第二接口均接入设备时,控制模块通过检测两个接口接入设备的设备参数,使得电池包的第一接口和第二接口实现有条件地边充边放,或同时放电,或同时充电,提高了电池包的使用便利性、适用性和安全性。

Description

电池包以及电池包的充放电控制方法
本申请要求了申请日为2021年2月10日,申请号为202110183948.5以及申请日为2021年12月16日,申请号为202111540306.2的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电池包领域,特别是涉及一种电动工具用电池包及电池包的充放电方法。
背景技术
在电动工具领域,电动工具电池包通常仅设置电气设备接口,用于给电动工具提供电力,接口形式单一,无法满足用户逐渐增多的对3C类设备的充电需求。随着智能设备的不断发展,人们对3C类设备的需求不断提升,而3C类设备通常存在耗电快,续航不长的缺陷。因此,在电动工具电池包上设置3C类设备接口的设计为工具用户提供了便利。
USB Type-C的双向接口特性及其优异的数据传输特性,高稳定性等特性,使得以USB Type-C为代表的3C类接口逐渐成为了3C类设备的主流电源/数据线缆,也将成为电动工具电池包上可设置的优选智能设备接口。
然而,即使是同时设有电气设备接口以及3C类设备接口的电池包,考虑到安全、续航、充放电功率等因素,电气设备接口与3C类设备接口也无法同时工作,使用不方便,适用性低。
发明内容
为了克服现有技术的缺陷,本发明提供了一种电池包,所述电池包可拆卸地连接到外部设备以进行充放电,
电芯组;
第一接口,用于可拆卸地配接电气设备;
第二接口,用于可拆卸地配接3C设备;
开关模块,电连接于电池包的电芯组和所述第二接口之间;
所述电池包还包括控制模块,所述控制模块被配置为,
检测所述第一接口接入的电气设备的电气设备参数,检测所述第二接口接入的3C设备的3C设备参数;并根据所述电气设备参数控制所述第一接口工作,根据所述电气设备参数和/或所述3C设备参数选择允许或禁止所述第二接口工作;
所述控制模块通过控制所述开关模块以选择允许或禁止所述第二接口的工作。
在其中的一个实施例中,所述开关模块包括第一开关模块,所述第一开关模块包括开关元件和开关驱动电路,所述开关驱动电路电连于所述控制模块与所述开关元件之间,所述控制模块控制所述开关驱动电路驱动闭合所述开关元件以允许所述第二接口工作,或控制所述开关驱动电路驱动断开所述开关元件以禁止所述第二接口工作。
在其中的一个实施例中,所述电气设备的设备类型包括用电设备和充电设备;
所述控制模块根据所述电气设备参数判断所述电气设备的设备类型;
当所述控制模块判断所述电气设备是所述用电设备时,所述控制模块控制所述电芯组通过所述第一接口向所述用电设备供电;
当所述控制模块判断所述电气设备是所述充电设备时,所述控制模块控制由所述充电设备通过所述第一接口向所述电芯组充电。
在其中的一个实施例中,所述用电设备包括大功率用电设备和小功率用电设备;所述控制模块还被配 置为,检测所述第一接口配接的电气设备的电气设备参数;
当所述控制模块根据所述电气设备参数判断所述电气设备是大功率用电设备时,所述控制模块控制所述开关模块以禁止所述第二接口工作;
当所述控制模块判断所述用电设备是小功率用电设备或充电设备时,所述控制模块控制所述开关模块以允许所述第二接口工作。
在其中的一个实施例中,所述3C设备包括3C负载设备和3C充电设备,所述控制模块根据所述3C设备参数判断所述3C设备的设备类型;
若所述控制模块判断所述电气设备是小功率用电设备;
且当所述控制模块判断所述3C设备是所述3C负载设备时,所述控制模块控制所述开关模块以允许所述电芯组通过所述第二接口向所述3C负载设备供电;
当所述控制模块判断所述3C设备是所述3C充电设备时,所述控制模块控制所述开关模块以允许由所述3C充电设备通过所述第二接口对所述电芯组充电。
在其中的一个实施例中,所述3C设备的设备类型包括3C负载设备和3C充电器,所述控制模块根据所述3C设备参数判断所述3C设备的设备类型;
若所述控制模块判断所述电气设备是充电设备,
且当所述控制模块判断所述3C设备是3C负载设备时,所述控制模块控制所述开关模块以允许所述电芯组通过所述第二接口向所述3C负载设备供电。
在其中的一个实施例中,当所述控制模块判断所述3C设备是3C充电设备时,所述控制模块被配置为:检测所述第一接口接入的所述充电设备对所述电芯组的第一充电电流,及所述第二接口接入的所述3C充电设备对所述电芯组的第二充电电流;
当所述控制模块判断所述第一充电电流与所述第二充电电流之和高于所述电芯组的最大充电电流阈值时,所述控制模块控制断开所述开关模块以禁止所述3C充电设备通过所述第二接口对所述电芯组充电;
当所述控制模块判断所述第一充电电流与所述第二充电电流之和不高于所述电芯组的最大充电电流阈值时,所述控制模块控制所述开关模块以允许所述3C充电设备通过所述第二接口对所述电芯组充电。
在其中的一个实施例中,所述电气设备参数至少包括表征电气设备类型的参数,所述表征电气设备类型的参数至少包括端子设置参数、设备类型、电压、电流、温度、功率和电参数的变化率。
在其中的一个实施例中,所述控制模块根据所述表征电气设备类型的参数判断所述电气设备的设备类型;
所述控制模块判断所述电气设备是所述用电设备时,所述控制模块当判断所述电气设备参数中的至少一种参数不小于预设阈值时,判断所述用电设备是大功率用电设备;
其中,所述电气设备参数包括表征电气设备类型的参数,如端子设置参数、设备类型、电压、电流、温度、功率和电参数的变化率等。
在其中的一个实施例中,所述第一接口包括电源端子和至少一个通信端子,所述通信端子用于所述控制模块与所述电气设备通信。
在其中的一个实施例中,所述电池包与所述电气设备通过数字通信和/或模拟通信的方式进行通信。
在其中的一个实施例中,所述电池包还包括第二接口控制电路,所述第二接口控制电路串联于所述控制模块与所述第二接口之间,所述第二接口控制电路检测所述第二接口配接的所述3C设备的所述3C设备参数并传输给所述控制模块,或接收所述控制模块的控制信号以控制所述第二接口的充放电。
在其中的一个实施例中,所述第二接口为USB Type-C接口,所述第二接口控制电路与所述控制模块之间通过UATR或I2C的方式实现通信。
在其中的一个实施例中,所述开关模块还包括第二开关模块,所述第二开关模块电连于所述第二接口控制电路与所述第二接口之间,被配置为接收所述第二接口控制电路的控制信号以控制所述第二接口的工作。
本发明还提供一种电池包的充放电控制方法,所述电池包包括:电芯组;第一接口,用于可拆卸地配接电气设备;第二接口,用于可拆卸地配接3C设备;开关模块,电连接于电池包的电芯组和所述第二接口之间;其特征在于,所述方法包括如下步骤:
检测所述第一接口接入的电气设备的电气设备参数;
检测所述第二接口接入的3C设备的3C设备参数;
根据所述电气设备参数控制所述第一接口工作;
根据所述电气设备参数和/或所述3C设备参数控制所述开关模块以选择允许或禁止所述第二接口工作。
在其中的一个实施例中,所述根据所述电气设备参数控制所述第一接口工作的步骤包括:
根据所述电气设备参数判断所述电气设备的设备类型,所述电气设备的设备类型包括用电设备和充电设备;
当判断所述电气设备是用电设备时,控制所述电芯组通过所述第一接口向所述用电设备供电;
当判断所述电气设备是充电设备时,控制由所述充电设备通过所述第一接口向所述电芯组充电。
在其中的一个实施例中,所述用电设备包括大功率用电设备和小功率用电设备;所述根据所述电气设备参数控制所述第一接口工作的步骤还包括:
根据所述电气设备参数判断所述用电设备是否是大功率用电设备;
若是,则断开所述开关模块以禁止所述第二接口的工作;
若判断所述电气设备是小功率用电设备或充电设备时,闭合所述开关模块以允许所述第二接口工作。
在其中的一个实施例中,在所述判断所述电气设备是用电设备时,控制所述电芯组通过所述第一接口向所述用电设备供电的步骤之后,所述控制方法的步骤还包括:
根据所述电气设备参数判断所述用电设备是否是大功率用电设备;
若不是,则检测所述第二接口配接的所述3C设备的3C设备参数,并根据所述3C设备参数判断所述3C设备的设备类型;所述3C设备的设备类型至少包括3C负载设备和3C充电设备。
在其中的一个实施例中,所述根据所述电气设备参数和/或所述3C设备参数控制所述开关模块以选择允许所述第二接口工作的步骤包括:
若判断所述电气设备是小功率用电设备,且
当判断所述3C设备是3C负载设备时,闭合所述开关模块以允许所述电芯组通过所述第二接口向所述3C负载设备供电;
当判断所述3C设备是3C充电设备时,闭合所述开关模块以允许由所述3C充电设备通过所述第二接口对所述电芯组充电。
在其中的一个实施例中,所述根据所述电气设备参数和/或所述3C设备参数控制所述开关模块以选择允许所述第二接口工作的步骤包括:当判断所述电气设备是充电设备时,
检测所述第二接口配接的所述3C设备的3C设备参数,并根据所述3C设备参数判断所述3C设备的设备类型;
当判断所述3C设备是3C负载设备时,闭合所述开关模块以允许所述电芯组通过所述第二接口向所述3C负载设备供电。
在其中的一个实施例中,所述根据所述电气设备参数和/或所述3C设备参数控制所述开关模块以选择 允许所述第二接口工作的步骤包括:
当判断所述电气设备是充电设备,且
当根据所述3C设备参数判断所述3C设备是所述3C充电器时,
检测所述第一接口接入的所述充电设备对所述电芯组的第一充电电流,及所述第二接口接入的所述3C充电设备对所述电芯组的第二充电电流;
当判断所述第一充电电流与所述第二充电电流之和高于所述电芯组的最大充电电流阈值时,断开所述开关模块以禁止所述3C充电设备通过所述第二接口对所述电芯组充电;
当判断所述第一充电电流与所述第二充电电流之和不高于所述电芯组的最大充电电流阈值时,闭合所述开关模块以允许所述3C充电设备通过所述第二接口对所述电芯组充电。
在其中的一个实施例中,所述电气设备参数至少包括表征电气设备类型的参数,所述表征电气设备类型的参数至少包括端子设置参数、设备类型、电压、电流、温度、功率和电参数的变化率。
在其中的一个实施例中,所述充放电控制方法还包括:
根据所述表征电气设备类型的参数判断所述电气设备的设备类型;
当判断所述电气设备是用电设备时,
当所述电气设备参数中的至少一种参数不小于预设阈值时,判断所述用电设备是大功率用电设备。
在其中的一个实施例中,所述检测所述第一接口的电气设备参数和/或检测所述第二接口的3C设备的3C设备参数的步骤之前,所述充放电控制方法还包括:
检测所述第一接口和/或所述第二接口的配接状态,若判断所述第一接口和/或所述第二接口接入了设备,在设备支持的情况下,与所述电气设备和/或所述3C设备建立通信,获取所述第一接口和/或第二接口的接入设备的对应电气设备参数和/或3C设备参数。
上述电池包,通过检测电池包第一接口接入的电气设备的电气设备参数,检测电池包第二接口接入的3C设备的3C设备参数,根据电气设备参数控制第一接口充放电,并根据电气设备参数和/或3C设备参数控制开关模块以选择允许或禁止第二接口的工作。即:当电池包的第一接口和第二接口接入的设备不同时,可以通过检测第一接口接入的电气设备和第二接口接入的3C设备的设备参数,并基于设备参数控制电气设备的充放电及控制选择允许或禁止3C设备的充放电,使得电池包的两个接口在特定的条件下,实现安全高效的边充边放,或同时放电,或同时充电,由此,实现了用户可以同时使用两个接口的工作需求,既提高了安全性能,也有效提高了电池包的使用便利性和适用性。
附图说明
以上所述的本发明的目的、技术方案以及有益效果可以通过下面的能够实现本发明的具体实施例的详细描述,同时结合附图描述而清楚地获得。
附图以及说明书中的相同的标号和符号用于代表相同的或者等同的元件。
图1是本申请实施例一提供的电池包的第一较佳实施例的示意图;
图2是图1所示电池包的俯视图;
图3是图1所示电池包与电气设备配合的示意图;
图4-5是图1所示电池包与3C设备配合的示意图;
图6是本申请实施例一提供的电池包的功能模块示意图;
图7是本申请实施例一提供的电池包的功能模块示意图;
图8是本申请实施例一提供的电池包的功能模块示意图;
图9a是本申请实施例一提供的电池包的功能模块示意图;
图9b是本申请实施例一提供的电池包的功能模块示意图;
图10是本申请实施例一提供的电池包的功能模块示意图;
图11是本申请实施例一提供的电池包的功能模块示意图;
图12是本申请实施例一提供的电池包与电气设备配合的示意图;
图13是本申请实施例一提供的另一电池包与电气设备配合的示意图;
图14是本申请实施例二提供的电池包的充放电控制方法的流程框图;
图15是本申请实施例二提供的电池包的充放电控制方法的一个具体示例的流程框图。
具体实施方式
为了便于理解本发明,下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的优选实施方式。但是,本发明可以以许多不同的形式来实现,并不限于本文所描述的实施方式。相反的,提供这些实施方式的目的是为了对本发明的公开内容理解得更加透彻全面。
需要说明的是,在本发明中,除非另有明确的规定和限定,术语“第一”、“第二”等可在本文中用于描述各种元件,但这些元件不受这些术语限制,这些术语仅用于将第一个元件于另一个元件区分,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。除非另有明确的限定,对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
除非另有定义,本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
正如背景技术中提到的,为了使电动工具电池包满足用户日益增多的对3C类设备的供电需求,现多在电池包上设置3C类接口,例如USB接口,或者是通过适配器/转接座向3C类设备供电。当电池包上的电气设备接口和3C类设备接口均插入设备时,通常仅使用其中的一个接口,如对其中的一个接口充电或放电,同时禁用另一接口;或者不对两个接口进行管控。例如,目前主要包括以下几种情况:
场景1:当电气设备接口和3C类设备接口都插入用电设备时。此种情况下,考虑到电池包本身的容量有限,电气设备接口和3C类设备接口这两种接口的供电参数据均不相同,配接的设备所需的功率需求也各不相同,因此存在放电参数不一致的问题;此外,由于电气设备在实际工况的运行过程中,电机需要频繁地启停,而电机的启停的瞬间会在电回路中产生巨大的反向电动势,这将对电池包中的连接3C设备接口的功能回路中的电路器件产生冲击,从而造成不可逆的损坏,存在较大的安全隐患。因此,考虑到放电参数以及安全等因素,电池包会在对电气设备供电时,禁用3C类设备接口的功率输出,或者向3C类设备接口供电时禁止对电气设备供电,这导致用户无法对电气设备和3C类设备同时供电,实用性低。
场景2:当电气设备接口和3C类设备接口分别接入了一个充电设备和一个用电设备时。此种情况下,对于电芯组来说,尤其是在电池包的电芯组处于较高的功率输出时,同时充电和放电容易对电芯组造成较大的损伤。因此,考虑到电池包的寿命和续航等问题,通常设置仅允许充电设备对电池包充电或仅允许电池包对用电设备放电,即禁止电池包的边充边放。
场景3:当电气设备接口和3C类设备接口同时插入充电设备时。电动工具电池包通常仅通过电气设备接口进行充电,3C类设备接口的引入,使得使用3C充电设备对电动工具电池包充电成为可能。但是,,两个接口并联的设置导致充电的电流叠加,容易造成充电电流过大,存在过流的安全隐患,因此也无法通过两个接口同时对电池包充电。
结合上述列举出的几种场景可知,目前设置了3C类设备接口的电动工具电池包的使用仍较为不便,使用安全性较低。
基于上述问题,本申请提供了一种电池包及一种电池包的充放电控制方法,用于对具有电气设备接口和3C类设备接口的电池包的充放电过程进行控制,以提高电池包的使用便利性和安全性。
实施例一
如图1-5所示,为本发明提供的第一较佳实施例的一种电池包100,电池包100包括壳体12,电芯组10、第一接口20、第二接口30。
壳体包括上壳体12a和下壳体12b。上壳体的顶面设置有两条平行的导轨11。导轨11与电气设备上的滑槽相配合,使得电池包能沿着滑槽顺利地滑动到电气设备上的合适位置,实现与电气设备的匹配。第二接口设置于导轨内。
在其他实施例中,导轨还可以设置在壳体的侧面或底面。第二接口可以设置在导轨内,也可以设置在导轨外。
电芯组10设置于电池包100的壳体中,电芯组10包括若干电性电连接的电芯11。电芯11的个数以及各电芯之间的串并联方式在此并不作具体的限定。例如,该电芯11可以通过串联或者并联,或者串联和并联相结合的方式形成电芯组10。
第一接口20和第二接口30设置在壳体上,第一接口20用于电池包100可拆卸地配接电气设备200,电气设备200包括用电设备210和充电设备220。可选的,用电设备210为可通过第一接口20与电池包100配接的电气设备,该用电设备210设置有与电池包100相匹配的接口结构。上述用电设备可以包括如割草机、打草机、吹吸机等花园类电动工具,包括如锤钻、角磨、锯、钉枪、钻批等手持类电动工具,包括日常家庭使用的吸尘器、胶枪、剪刀、烙铁、风扇、手电筒、露营灯、气泵等简单家用小电动工具,以及各种可由电池包100供电的电气设备。图3中示出了电池包100通过导轨与部分电气设备200可直接拆卸配接的示意图,电池包的第一接口20与电气设备200的接口相匹配时,即可直接配接电气设备200进行充电或放电工作,由此提高了电池包的通用性和适配性。
充电设备220通过第一接口20与电池包100配接为其充电,该充电设备220设置有与电池包100的第一接口20对应匹配的接口结构,因此充电设备220能够通过匹配接口连接电池包100并对电池包100充电。对于本文所列举的用电设备210和充电设备220,在此不做具体限制。
第二接口30用于电池包100可拆卸地配接3C设备300。
其中,3C设备300至少包括3C负载设备310和3C充电设备320,如图4-5中所示,电池包100能够通过第二接口30对3C负载设备310供电,或者由3C充电设备320通过第二接口30对电池包100充电。
其中,3C负载设备可以包括但不限于平板、手机、便携式电脑、相机等多种支持3C类接口的电子设备,也可以包括支持3C类接口供电的电动工具等其他设备。此外,3C充电设备320通常设置有与电池包100的第二接口30对应匹配的接口结构,通常理解为设置了3C类接口,可为通过3C类接口对3C负载设备充电的充电器。
具体的,3C类接口通常理解为电子设备常用的USB、USB Type A/B/C,micro-A,micro-B,mini-A,mini-B等多种类型的3C类接口。对于本文上述列举的3C负载设备、3C类充电器和3C类接口,在此不作具体限制,也不仅限于上述列举的各项。
可以理解的是,第一接口20和第二接口30与对应配接的设备之间可以通过电极片或其他导电连接件实现电连接。
如图6所示,电池包100还包括开关模块40。开关模块40电连接于电芯组10和第二接口30之间,用于控制电芯组10与第二接口30之间的电通路的通断。具体的,当开关模块40闭合时,电芯组10到第二接口30之间的电通路导通;当开关模块40断开时,电芯组10到第二接口30之间的电通路断开。
上述电池包100,还包括控制模块50,控制模块50用于根据第一接口20和第二接口30的接入设备的设备参数,控制两个接口的充放电。
具体的,首先,控制模块50检测第一接口20处配接的电气设备200的电气设备参数,并检测第二接口30的3C设备300的3C设备参数;进一步地,控制模块50根据该电气设备参数控制第一接口20的工作,并根据该电气设备参数和/或3C设备参数选择允许或者禁止第二接口30的工作。其中,控制模块50通过控制开关模块40实现控制允许或禁止该第二接口20的工作。
可以理解的是,不同的电气设备200接入第一接口20处时,控制模块50所检测到的电气设备参数各不相同,控制模块50可根据检测到的电气设备参数判断电气设备200的硬件设置状态、工作状态、设备工作参数等信息,并基于电气设备参数控制电池包100与电气设备200的工作;同样的,不同的3C设备300接入第二接口30时,控制模块50所检测到的3C设备参数各不相同。
由此,控制模块可及时准确地根据第一接口20和/或第二接口30接入设备的电气设备参数和3C设备参数,去控制电池包通过第一接口20和/或第二接口30对外部设备的充放电,使得电池包100在安全可控的基础上,控制第一接口20和第二接口30的同时工作,满足了用户对两个接口同时工作的需求,提高了电池包100的安全性、适用性和应用场景。
需要说明的是,当任一电气设备200通过第一接口20接入电池包100,或任一3C设备300通过第二接口30接入电池包时,即电池包100只接入了一个外部设备时,在电池包100正常工作的情况下,均是允许该外部设备工作的。基于此,电池包100除了可以作为电动工具电池包单独使用,也可作为充电宝给3C类设备供电使用,也可由3C类充电器直接进行充电,具有较强的通用性。
现有技术中,由于不对第一接口20和第二接口30进行充放电管控,第一接口20和第二接口30同时工作时会产生一定的安全问题,因此,本发明所提供的实施例中,控制模块50通过检测到的电池包100的第一接口20接入电气设备200的电气设备参数和/或第二接口30接入3C设备300的3C设备参数,并根据该电气设备参数控制第一接口20的充放电,根据电气设备参数和/或3C设备参数,通过控制开关模块40以控制允许或禁止第二接口30的充放电。由此在保证电池包100的安全性能的前提下,使得第一接口20和第二接口30能够同时工作,具有较强的实用性和便利性。
具体的,参照图7,开关模块40包括开关元件41和开关驱动电路45。该开关驱动电路45串联于控制模块50与开关元件41之间,开关元件41串联于电芯组10与第二接口30之间。在预定条件下,控制模块50生成控制信号,控制该开关驱动电路45以驱动开关元件41的闭合和断开,当开关元件41闭合时,电芯组10到第二接口30的电通路接通,即允许第二接口30的充放电;相反地,当开关元件41断开时,电芯组10到第二接口30的电通路断开,即禁止第二接口30的充放电。
其中,开关元件41可以是但不仅限于MOS管开关、继电器开关、IGBT开关等,开关驱动电路45对应于开关元件41设置,可以是但不仅限于MOS管开关驱动电路、继电器开关驱动电路、IGBT开关驱动电路等。
在其中的一个实施例中,控制模块50实时对第一接口20进行循环检测。当控制模块50检测到第一接口20处接入电气设备200时,电气设备200与第一接口20的电极片接触的瞬间,改变电极片处的电压大小,能够激活控制模块50,通过自锁电路形成对控制模块50的供电闭合回路,从而实现对控制模块的持续供电。其中,自锁电路为本领域技术人员常用的技术手段,在此不作具体描述。
可以理解的是,控制模块50对第二接口30同样实时进行检测,且当第二接口30有设备接入时,也具有对控制模块50激活的作用,具体请见上一段描述。
需要说明的是,电池包100上通常设置如电量指示灯、照明灯等指示装置,通过按压或触摸设置在该电池包100上的对应按键进行点亮或关闭,此处按压或触摸按键的操作同样也是激活控制模块形成自锁电 路的一种可实现方式。其中,激活控制模块的实现方式有很多,如按压或触摸按键、无线通信、射频感应、传感器感应等。
控制模块50激活上电之后进入工作状态,获取第一接口20处的电气设备200的电气设备参数,并根据电气设备参数判断电气设备200的设备类型。
进一步地,控制模块50被配置为根据电气设备参数判断该电气设备的设备类型;当控制模块50判断第一接口20处接入用电设备210时,电芯组10通过第一接口20对用电设备放电;当控制模块50判断第一接口20处接入充电设备220时,由充电设备220通过第一接口20对电芯组10充电。
进一步地,用电设备210包括大功率用电设备211和小功率用电设备214。众所周知,每个用电设备均预设有额定功率、额定电流、额定电压、额定温度等额定的电气设备参数,有实际工作时的工作功率、工作电流、工作电压、工作温度、电参数变化率等工作时的电气设备参数,也有包括硬件设置、设备类型等其他电气设备参数,通过对上述表征电气设备类型的参数,可以将用电设备210具体划分为大功率用电设备211和小功率用电设备214,并采用不同的充放电控制策略。
在其中的一个实施例中,电池包100的第一接口20接入了用电设备210,控制模块50检测用电设备210的电气设备参数,并根据电气设备参数判断所配接的用电设备210是否是大功率用电设备211,若判断接入的电气设备210是大功率用电设备211,控制模块50生成禁止指令,控制断开开关模块40以断开电芯组10与第二接口30的电通路,由此禁止了第二接口30的充放电工作。
对应地,若控制模块50判断接入的电气设备210是小功率用电设备214或者是充电设备220时,控制模块50生成允许指令,控制闭合开关模块40以闭合电芯组10与第二接口30的电通路,由此允许第二接口30处的充放电工作。在其中的一个实施例中,控制模块50检测第二接口30处的3C设备的3C设备参数,并根据3C设备参数判断3C设备300的设备类型。其中,3C设备300的设备类型至少包括3C负载设备和3C充电设备。
在其中的一个实施例中,控制模块50根据电气设备参数判断连接的电气设备210不是大功率工具时,例如,当控制模块50判断连接的是小功率用电设备214时,且当判断第二接口30接入的是3C负载设备时,控制模块50生成允许指令,控制开关模块40闭合以导通电芯组与第二接口30的电通路,由此允许电芯组10通过第二接口30对3C负载设备供电;对应地,当判断3C设备30接入的是3C充电设备时,控制模块50生成允许指令,由此允许3C充电设备通过第二接口30对电芯组10进行充电。由此实现了,在第一接口20配接了小功率用电设备214的条件下,控制模块50控制允许第二接口30的充放电工作,提高了电池包100的安全性能和使用便利性。
在本实施例中,控制模块50判断第一接口20接入了非大功率用电设备时,即接入了小功率用电设备214或3C充电设备320时,允许第二接口30的充电和放电工作,使得第一接口20和第二接口30同时工作成为可能。非大功率用电设备,即小功率用电设备214或3C充电设备320工作时,首先,控制模块50判断第二接口30接入3C设备的设备类型。若控制模块50判断第二接口30接入3C类用电设备,此种情况下,单独的第一接口20或者单独的第二接口30所需的放电功率都不大,因此两个接口的总的放电功率不大,由此能够满足电池包100同时对两个接口放电的需求,同时,也能够满足两个接口所需的放电功率。其次,若控制模块50判断第二接口30接入3C充电设备,此种情况下,单独的第一接口20的放电电流较小,同时3C类充电器接口的充电电流也较小,对于电芯组20来说,小电流的边充边放所造成的损伤和影响可以忽略不计,因此在此种情况下,也能够在保证安全和最小化损伤电芯的情况下,满足电池包100的第一接口20和第二接口30能够边充边放或者同时放电的需求,从而提高了用户使用的便利性和电池包的放电安全性能。
在其中的一个实施例中,当控制模块50判断第一接口20接入了充电设备220,控制模块50检测充电 设备220的电气设备参数,允许充电设备220对电芯组10进行充电。其中,第一接口20接入充电设备220时,电气设备参数至少包括充电设备的型号、最大允许充电电流、最大允许充电电压、最小允许充电电压、最高/低允许充电温度等参数。
需要说明的是,当第一接口20接入用电设备210时,电气设备参数至少包括用电设备的型号、最大允许放电电流、最大允许放电电压、最小允许放电电压、最高/低允许放电温度等参数。
进一步地,控制模块50检测第二接口30的3C设备参数,并根据3C设备参数判断3C设备300的设备类型。若控制模块50判断3C设备300是3C用电设备310,控制模块50生成允许信号控制开关模块40闭合,以导通电芯组10与第二接口30的电通路,由此允许电芯组10通过第二接口对3C用电设备供电。由此实现了,在第一接口20配接了充电设备220的条件下,控制模块50控制允许第二接口30的放电工作。
其中,第二接口30接入3C负载设备时,所述3C设备参数至少包括3C设备型号、最大允许放电电流、最小允许放电电压、最高/低允许放电温度、额定功率等参数。
在其中的一个实施例中,电池包100的第一接口20接入充电设备220对电芯组10充电时,进一步地,若控制模块50判断接入的3C设备300是3C充电设备320,控制模块50控制开关模块40闭合以允许3C充电设备320通过第二接口30对电芯组10充电;并检测充电设备220对电芯组10充电的充电电流I ,同时检测3C充电设备320对电芯组10充电的充电电流I 3C
其中,控制模块50中预存储了电池包100的最大允许充电电流I MAX,控制模块将充电设备220的充电电流I 与3C充电设备320的充电电流I 3C之和与预存储的最大允许充电电流I MAX比较,若充电电流之和I +I 3C高于最大允许充电电流I MAX,控制模块50生成禁止信号,控制开关模块40断开以禁止3C充电设备320对电芯组10充电。由此实现了,在第一接口20配接了充电设备220时约束最大充电总电流的条件下,控制模块50控制允许第二接口30的充电工作。
在本实施例中,控制模块50判断第一接口20接入了充电设备220时,根据第二接口30接入的3C设备的设备类型进行精细控制,也使得第一接口20和第二接口30同时工作成为可能。充电设备220通过第一接口20对电芯组10充电时,首先,若控制模块50判断第二接口30接入3C负载设备,此种情况下,第二接口30的放电电流和所需的放电功率较小,其量级相对于充电设备的充电电流来说较小,因此对于电芯组10的损伤和影响也可以忽略不计。
其次,若第二接口30接入3C充电设备,此种情况下,需要考虑电芯组10所能承受的最大允许充电电流I MAX。在电路设计上,第一接口20与第二接口30并联连接,是相互独立的两个电回路,因此在两个接口同时接入充电设备时,施加在电芯组10上的电流值是叠加的,因此,一旦两个充电设备对电芯组10施加的总的充电电流之和高于电芯组10的最大允许充电电流I MAX时,控制模块50将禁止3C充电设备从第二接口30对电芯组10充电。此种情况下,只有在不损伤电池包100的前提下,才控制允许3C充电设备对电芯组10充电。由此也在安全的前提条件下,实现了电池包100的第一接口20和第二接口30能够边充边放或同时充电的需求,进一步提高了电池包100的普适性和安全性能。
需要说明的是,电池包100的实际使用过程中,第一接口20与第二接口30的插入顺序可能存在区别,但无论哪一个接口接入设备,控制模块50均会检测对应接口的对应设备参数。
特别地,若第二接口30先接入3C设备进入工作状态,此时第一接口20接入设备时,控制模块50也按照前述方式进行检测和控制,即在检测第一接口20的电气设备参数以及第二接口30处的3C设备参数后,控制第一接口20处的充放电,并进一步控制继续允许还是需要禁止第二接口30处的工作。其中,在控制模块50禁止第二接口20工作时,将断开对第二接口正在进行的工作。
在其中的一个实施例中,电气设备参数至少包括表征电气设备类型的参数,所述表征电气设备类型的 参数至少包括但不限于端子设置参数、设备类型、电压、电流、温度、功率和电参数的变化率。控制模块50通过检测的上述表征电气设备类型的参数,对第一接口20接入的电气设备类型进行准确判断,从而实现对第二接口30充放电工作的实时控制,以达到安全且便利的效果。
在其中的一个实施例中,控制模块50根据检测的表征电气设备类型的参数判断电气设备的设备类型;当控制模块50判断第一接口20接入的是用电设备210时,若控制模块50判断电气设备的硬件设置中至少设置了一个通信端子时,或,判断电气设备参数中的至少一种参数满足预设条件,例如至少一种参数不小于预设阈值时,判断该用电设备210是大功率用电设备211。其中,电气设备参数包括设备类型、电压、电流、温度、功率等参数;具体地,电气设备参数至少包括表征电气设备类型的参数,所述表征电气设备类型的参数至少包括端子设置参数、设备类型、电压、电流、温度、功率和电参数的变化率。例如,当满足用电设备210的功率不小于预设设备功率,用电设备210的电机功率不小于预设电机功率,或用电设备210中配置了电机等条件时,用电设备210被判定为大功率用电设备。
在其中的一个实施例中,控制模块50还可以包括检测单元,控制模块50检测电气设备的电气设备参数,并根据电气设备参数进一步控制第二接口30的工作。具体地,当控制模块50判断电气设备参数如电压、电流、功率、温度或电参数的变化率不小于预设值,判断该电气设备是大功率用电设备211,并控制断开开关模块以禁止第二接口30的充放电;当控制模块50判断电气设备参数如电压、电流、功率、温度或电参数的变化率不高于预设值时,判断该电气设备非大功率用电设备,并控制闭合开关模块以允许第二接口30的充放电工作,即,在允许电气设备工作的同时也允许3C设备的工作。
在其中的一个实施例中,控制模块50检测第一接口20处的电气设备参数,并根据其中表征电气设备类型的参数,例如端子设置参数,判断用电设备210的设备类型。
可以理解的是,大功率用电设备211通常具有较大的功率、工作电流和发热量,对电池包100的性能要求较高,因而也易对电池包100产生损坏;为了保证电池包100以及大功率用电设备211的安全性能,大功率用电设备211除设置电源正极端子、电源负极端子外,至少还会设置一个通信端子,用于电池包100与大功率用电设备211之间的信号传递。而小功率用电设备214的功率通常较小,因而无论是工作电流、发热量等均较小,因此对于电池包100性能的要求也较小;此外,小功率用电设备214通常呈现便携、小巧的形态,因而接口处通常只设置电源正极端子和电源负极端子。
因此,通信端子的设置的特殊性,使得端子设置参数也成为表征用电设备210设备类型的一个可判断参数。当控制模块50检测的端子设置参数表征用电设备210未设置通信端子时,判断用电设备210是小功率用电设备214;当控制模块50检测的端子设置参数表征用电设备210至少设置了一个通信端子时,通过通信端子获取用电设备210的更多电气设备参数,根据电气设备参数中的其他表征电气设备类型的参数准确判断用电设备210是大功率用电设备211还是小功率用的设备214。
在其中的一个实施例中,控制模块50还可以包括AFE芯片,AFE芯片连接电芯组10的各节电芯10,用于检测每节电芯10的单节电压并判断各节电芯的均衡状态,当判断各单节电压之间的差值超过预设值时,判断单节不均衡时,电池包100进入不均衡故障状态。此外,AFE芯片还可用于检测电池包100的各项工作参数,例如,充电电流、放电电流、充电电压、放电电压等,当检测的上述工作参数超出预设值时,判断电池包进入故障。具体的,电池包故障还可以包括:过放故障、过充故障、过流故障、过温故障、低温故障等。在其中的一个实施例中,参见图8所示,电池包100的第一接口20包括电源端子21、24和两个通信端子22、23,通常以电极片或其他导电连接件的形式设置于接口处。其中,电源正极端子21和电源负极端子24分别电连接于电池包100的电源正端和负端。通信端子22可设置为数字通信端子,能够进行数字通信;通信端子23可设置为模拟通信端子,用于进行模拟通信。对应地,当电气设备210通过第一接口20与电池包100配接时,根据电气设备210的具体接口端子设置来与电池包100对应配接。
当具有通信功能的电气设备配接到电池包100上时,电池包100与电气设备之间通过数字通信端子相互通信传输各类电气设备参数,如设备类型、电气设备的工作需求、电芯组状态参数、电池包故障状态、电气设备设备故障状态等信号。因此电池包100通过数字通信端子传输的信息即可获知电气设备是用电设备还是充电设备,具体地,用电设备是大功率用电设备还是小功率用电设备,基于此执行为电池包的充电管理或放电管理。此外,电池包还可通过模拟通信端子向电气设备发送电池包故障状态信号,或表征电池包状态参数的模拟信号。数字通信端子的信号与模拟信号端子的信号均能使得电气设备及时地停止工作,实现了数字信号和模拟信号双重保护,有效提升了电气设备和电池包配合工作时的安全性。
具体地,如图8-10所示,电气设备210的接口上至少设置电源正极端子21’和电源负极端子24’对应与电池包100的第一接口20的电源正极端子21和电源负极端子24配接,以与电池包100形成电回路。此外,电气设备210的接口20’上还可以设置通信端子,例如,单独设置了数字通信端子22’,或单独设置了模拟通信端子23’,或既设置了数字通信端子22’,也设置了模拟通信端子23’。
在其中的一个实施例中,当电池包100通过第一接口20连接到电气设备200,电极片连接时,模拟通信端子23的电平发生变化,或者数字通信端子22处生成的激活信号,均可激活控制模块50。可以理解的是,若电池包100上还设置了激活按键,触发该激活案件也可实现对控制模块50的激活。本文对控制模块50的激活方式不限上述举例,本领域的技术人员可以根据电路原理实现对控制模块50的激活。
控制模块50激活后,检测电气设备200的电气设备参数,根据电气设备参数识别电气设备的端子设置状态,若控制模块50判断电气设备200未设置通信端子,判断电气设备200为小功率用电工具214或充电设备220,控制电池包100通过第一接口20对小功率用电设备214供电,或由充电设备220对电池包100充电,同时控制允许第二接口30的充放电工作。若控制模块50判断电气设备200至少设置了一个通信端子,可通过通信端子获取电气设备200的更多的电气设备参数。若电气设备200设置了数字通信端子22’,电池包100可通过数字通信端子22与电气设备200建立数字通信,获取电气设备200的具体参数信息;若电气设备200设置了模拟信号端子23’,电池包100可通过模拟信号端子23获取电气设备200的状态信息,例如电气设备状态正常、状态异常等;若电气设备200既设置了数字信号端子22’也设置了模拟信号端子23’,电池包100也可通过数字通信端子22和模拟通信端子23同时通信。
在其中的一个实施例中,参加图8所述,若电气设备200的接口20’设置了电源正极端子21’、电源负极端子24’、数字通信端子22’及模拟通信端子23’,当电池包100的通过第一接口20与该电气设备连接时,四个端子对应匹配实现电连接。具体的,控制模块50既能通过数字通信端子也能通过模拟通信端子与电气设备200实现通信,即电池包100与电气设备200既可以通过数字和模拟两种方式进行通信。
在其中的一个实施例中,参见图9-10所示,若电气设备200的接口20’设置了电源正极端子21’、电源负极端子24’、以及一个通信端子,该通信端子可以是数字通信端子22’或模拟通信端子23’中的任一个,则控制模块50通过与电气设备所具有的通信端子22’或23’中的一个进行通信。
具体的,参见图9,若电气设备200仅设置了数字通信端子22’,控制模块50以数字通信的方式与电气设备200进行通信。控制模块50首先发出数字握手信号,若能够接收到电气设备200的握手回复信号,则判断电气设备200设置了数字通信端子22’,支持数字通信。进一步地,控制模块能够通过数字通信端子22’获取电气设备200的电气设备参数,根据电气设备参数判断电气设备200的设备类型,并根据电气设备参数控制电气设备200的充放电。例如,若控制模块50通过数字通信端子22’判断电气设备是充电设备220,控制允许电池设备220对电芯组10充电,同时控制模块50向充电设备220发送电池包100的工作参数如电压、电流、温度、电量等,从而充电设备220可根据上述工作参数精准、安全地控制对电芯组10的充电。对应地,控制模块50通过数字通信端子22’获取充电设备220的电气设备参数如充电电流、温度等,从而可以及时判断专用充电设备220的工作状态,以避免充电设备220故障而导致电池包100出现 损坏。
若电气设备200仅设置了模拟通信端子23’,参见图10,控制模块50以模拟通信的方式与电气设备200进行通信。控制模块50首先发出数字握手信号,若未在预定时间内接收到电气设备200的握手回复信号或接收到非对应的握手回复信号,则判断电气设备200不支持数字通信,则选用模拟通信端子23进行通信。或者,控制模块50检测第一接口20处数字通信端子22和模拟通信端子23处的电平参数判断电气设备200是否接入了对应通信端子。具体实现途径不限于上述方式。
可以理解的是,若电气设备200仅设置了模拟通信端子23’时,以使用电平参数作为模拟信号为例,可以对不同的电平参数值进行预设定,如特定的电平参数值表征特定的工作状态,如分别设定表征包括过充故障、过放故障、过流故障、过温故障、低温故障、不均衡故障等故障状态的特定电平值。进一步地,控制模块50通过模拟通信端子23检测电气设备200的识别电阻以识别电气设备的设备型号,并根据识别的设备型号控制电芯组10的充电或放电。电池包100在充电或放电过程中,当电池包100或电气设备200中任一发生故障时,通过模拟通信端子23或23’向对方发送表征异常的模拟信号,由此控制停止充放电,以提高电池包100的安全性能。
特别地,参见图11所示,若第一接口20接入的电气设备200既未设置数字通信端子22’,也未设置模拟通信端子23’,即电气设备200不支持通信,仅设置了电源端子21’和24’,为了提高电池包100的适用性,控制模块50将判断该电气设备200为小功率工具,并以此控制电池包100两个接口的工作,具体方式与前述描述一致,在此不再赘述。
需要说明的是,当第一接口20接入的电气设备200仅设置了电源端子21’和24’时,此类电气设备200通常可以理解为简单的不需要实时控制的小工具,如电烙铁、剪刀等,这一类的工具通常功率较小。
在其中的一个实施例中,参见图11所示,电池包100还包括第二接口控制电路60,连接第二接口30,并与开关模块40和控制模块50电连接。具体的,第二接口控制电路60实时响应于第二接口30的设备接入,当第二接口30有设备接入时,激活第二接口控制电路60和控制模块50,第二接口控制电路60检测第二接口30处3C设备300的3C设备参数,并将3C设备参数和对应参数的判断结果传输给控制模块50,由此实现了控制模块50对3C设备参数的检测。进一步地,控制模块50针对从第二接口控制电路60获取到的数据,生成控制指令发送给第二接口控制电路60,以控制第二接口30的充电和放电。
例如,当第二接口30接入3C设备时,第二接口控制电路60检测3C设备参数,判断为3C负载设备310时,将3C负载设备的类型、3C设备参数等传输给控制模块50,控制模块50对应地生成放电控制指令发送给第二接口控制电路60,同时控制开关模块40闭合导通电芯组到第二接口控制电路60的电回路,从而控制对3C负载设备310的供电。对应地,当判断3C设备300为3C充电设备320时,将3C充电设备的类型、3C设备参数等传输给控制模块50,控制模块50对应地生成充电控制指令发送给第二接口控制电路60,同时控制开关模块40以允许或禁止3C充电设备320对电芯组10的充电。
在其中的一个实施例中,第二接口控制电路60可以包括PD芯片、DC-DC升降压电路,其中PD芯片和DC-DC升降压电路可以使用一颗SOC集成芯片实现,也可以使用两颗分立的芯片实现。
其中,第二接口控制电路60支持快充协议,当第二接口控制电路60根据3C设备参数判断3C设备支持快充或允许快充时,向控制模块50发送判断结果,控制模块50在电池包100参数允许的情况下,能够控制第二接口控制电路60以通过第二接口30对3C设备快充,或由3C设备通过第二接口对电池包100进行快充。
可以理解的是,第二接口控制电路60还支持其他3C类接口通用的其他协议,不仅限于上述提及的快充协议。
在其中的一个实施例中,第二接口控制电路60可以集成于控制模块50中,为了便于描述,将第二接 口控制电路60作为第二主控模块52,未设置第二接口控制电路60的主控模块形成为第一主控模块51。即,控制模块50可以包括第一主控模块51和第二主控模块52,第一主控模块51与第二主控模块52之间电性连接,可相互通信,其中第一主控模块51用于控制第一接口20的充放电工作,第二主控模块52用于控制第二接口30的充放电工作;当第二接口30接入3C设备时,第二主控模块52基于与第一接口20接入的3C设备的3C设备参数,启动与第一主控模块51的通信。
具体地,第二主控模块52向第一主控模块51发送是否允许启动当前工作的工作请求信息,对应地,第一主控模块51响应于工作请求信息,向第二主控模块52发送允许工作请求或不允许工作请求的工作响应信息。
可以理解的是,第一主控模块51与第二主控模块52可以是独立设置的两块芯片,也可以是集成于一体的一块芯片;此外,本申请中提及的各个功能模块可以是各自独立的功能芯片,也可以根据特定的需求选择特定功能模块进行集成。
在其中第一个实施例中,第二接口30为USB Type C接口,第二接口控制电路60于控制模块50之间通过UART或I2C的方式实现通信。
可以理解的是,第二接口控制电路60通常为对应第二接口30类型的控制电路,例如,若第二接口30设置为USB Type C接口,则第二接口控制电路60对应地设置为PD控制模块。
在其中的一个实施例中,主控模块50具有待机状态和工作状态;在待机状态下,主控模块50的电能消耗相对较低。当第一接口20和第二接口30均没有设备接入时,主控模块50处于待机状态。
进一步地,若第一接口20或者第二接口30中的任一接口接入了设备,则激活主控模块50,主控模块50由待机状态切换到工作状态。
可以理解的是,当主控模块50检测到电池包100的任一故障或接收到任一表征电池包100故障的信号时,主控模块50进入待机状态。
在其中的一个实施例中,开关模块40还包括第二开关模块,第二开关模块电连接与第二接口控制电路60与第二接口30之间,被配置为接收所述第二接口控制模块的控制信号以控制所述第二接口30的工作。当控制模块50判断第二接口30无设备接入或第二接口30与电芯组10不适合匹配工作时,控制断开第二接口控制电路。
特别地,当控制模块50进入待机状态前,断开第二开关模块,以断开部分电路的功耗,从而降低整个控制模块50的功耗;待机状态下,控制模块50仍保持对第一接口20和第二接口30的接入识别,仅保持微弱的电流供应,功耗较小。
在其中的一个实施例中,与第一接口20连接的电气设备包括第一电气设备和第二电气设备。第一电气设备的接口不同于第二电气设备。第一电气设备可以直接与电池包100的第一接口配接,第二电气设备经适配器才可与第一接口配接。
对于无法直接配接电池包100的第二电气设备,电池包100可通过导轨与适配器上的滑槽相配合,再由适配器配接到第二电气设备上匹配使用。第二电气设备不能直接配接电池包的原因可能是机械结构上不匹配,也可能是各接口配置的连接端子不匹配,还可能是机械结构不匹配同时连接端子也不匹配。通过在适配器400的一侧设置与电池包100的第一接口匹配的第一连接口,和在适配器400的另一侧设置与电气设备接口匹配的第二连接口,使得电池包100经适配器400后能与第二电气设备配接。
如图12所示,电池包100通过配接适配器400再与用电设备210或充电设备220配接,从而实现对用电设备210放电或由充电设备220充电。
特别地,适配器400的形态也非固定的,电池包100通过导轨与适配器上的滑槽相配合,适配器400设置线缆与第二电气设备配接使用。图13示出了部分可由通过线缆连接适配器400从而配接到电池包100 的电气设备。
实施例二
本实施例提供了一种电池包的充放电控制方法,该电池包包括:电芯组;第一接口,用于可拆卸地配接电气设备;第二接口,用于可拆卸地配接3C设备;开关模块,电连接于电池包的电芯组和所述第二接口之间。该电池包的充放电控制方法适用于实施例一所提供的电池包,也适用于其他类似结构的电池包。
参见图14,本实施例提供的电池包的充放电控制方法包括以下步骤:
步骤S100:检测第一接口20的电气设备200的电气设备参数。
步骤S200:检测所述第二接口30的3C设备300的3C设备参数。
步骤S300:根据所述电气设备参数控制所述第一接口20工作。
步骤S400:根据所述电气设备参数和/或所述3C设备参数控制所述开关模块40以选择允许或禁止所述第二接口30工作。
本实施例所提供的电池包的充放电控制方法于实施例一所提供的电池包属于同一发明构思,关于电池包的描述以及上述步骤可参见实施例一中的具体内容,在此不再赘述。
上述电池包的充放电控制方法中,检测第一接口20的电气设备200的电气设备参数,根据所述电气设备参数控制所述第一接口20工作,检测所述第二接口30的3C设备300的3C设备参数,根据所述3C设备参数控制所述开关模块40以控制允许或禁止所述第二接口30工作。即:通过检测第一接口20和/或第二接口30接入设备的电气设备参数和/或3C设备参数,去控制电池包通过第一接口20和/或第二接口30对外部设备的充放电,在保证电池包100安全可控的基础上,使得第一接口20和第二接口30能够同时工作,满足了用户对两个接口同时工作的需求,提高了电池包100的安全性、适用性和应用场景。
在其中的一个实施例中,根据电气设备参数控制第一接口20的步骤包括:根据所述电气设备参数判断所述电气设备200的设备类型,所述电气设备的设备类型包括用电设备和充电设备;当判断所述电气设备是用电设备210时,控制所述电芯组10通过所述第一接口20向所述用电设备210供电;当判断所述电气设备是充电设备220时,控制由所述充电设备220通过所述第一接口20向所述电芯组10充电。
可以理解的是,第一接口20接入的是用电设备210或是充电设备220,是与电动工具电池包100标准匹配的用电器和充电器,因此当第一接口20接入标准匹配的设备时,电池包100对应地执行放电或充电的动作。
在其中的一个实施例中,本实施例所提供的控制方法还包括:所述用电设备包括大功率用电设备和小功率用电设备,根据电气设备参数判断所述用电设备210是否是大功率用电设备211;若判断接入的是大功率用电设备211,则断开所述开关模块40以禁止所述第二接口30的工作。
对应地,若判断接入是小功率用电设备214或者是充电设备220时,则闭合开关模块40以允许第二接口30处的充放电工作。
需要说明的是,当第一接口20接入的是大功率用电设备211时,为了满足大功率用电设备211的输出功率需求,以及对续航时长的考虑,需要尽量减少其他接口的功率输出,因此,将禁止第二接口30的充放电工作。此种情况下,大功率用电设备通常处于较恶劣的工作环境中,用户对第二接口的需求较少,因此能够保证第一接口20的功率输出更为重要。
在其中的一个实施例中,本实施例所提供的控制方法还包括:根据电气设备参数判断所述用电设备210不是大功率用电设备211,即是小功率用电设备214时,则进一步检测所述第二接口30配接的3C设备300的3C设备参数,并根据所述3C设备参数判断所述3C设备300的设备类型;其中,3C设备300的设备类型至少包括3C负载设备和3C充电设备。
进一步地,当判断所述3C设备是3C负载设备310时,控制闭合所述开关模块40以允许所述电芯组10通过所述第二接口30向所述3C负载设备310供电;
当判断所述3C设备是3C充电设备320时,控制闭合所述开关模块40以允许由所述3C充电设备320通过所述第二接口30对所述电芯组10充电。
在传统方案中,电池包100通过第一接口20对外放电时,通常存在如下两种情况:第一,不对第二接口30的充放电进行管控;第二,直接禁止第二接口30的供电。因此对于第一种情况下,当第一接口20所需的输出功率较大时,第二接口30不受管控,仍可对外输出功率,这将直接影响电池包100对大功率用电设备的输出功率不足,导致动力不足而无法满足工作需求,或者将缩短电池包100的续航时间。而对于第二种情况下,若第一接口20所需的输出功率较小时,是能够支持对第二接口30的正常供电的,此时若直接禁止第二接口30的供电,用户将无法同时使用第二接口30实现对3C负载设备的供电,因而产生了不便。
为了解决这种问题,本实施例对第一接口20接入的电气设备200检测电气设备参数并判断是否是大功率用电设备210,针对第一接口20接入的用电设备的功率需求来有条件地选择是否允许第二接口30的工作,既满足了对大功率输出的要求,又在电池包100处于小功率输出时,支持两个接口同时工作,不仅提高了便利程度和适用性,也提高了电池包100的安全性和续航能力。
需要说明的是,当第一接口20接入非大功率用电设备220,而第二接口30接入3C负载设备或3C充电设备时,允许两个接口同时工作,即允许同时放电,或允许边充边放。对于此种条件下的同时放电和边充边放,上一实施例已给出具体描述,在此不再赘述。
在其中的一个实施例中,当判断电气设备200是充电设备220时,检测第二接口30的3C设备200的3C设备参数,并根据3C设备参数控制开关模块40以控制允许或禁止第二接口30工作的步骤,具体包括:
检测第二接口30配接的3C设备300的3C设备参数,并根据3C设备参数判断3C设备300的设备类型;
当判断3C设备是3C负载设备310时,闭合开关模块40以允许所述电芯组10通过第二接口30向3C负载设备310供电。
即,当电池包100的第一接口20接入了充电设备220时,进一步地检测第二接口30的3C设备参数。若第二接口30接入了3C负载设备310,则允许对3C负载设备供电,即在特定情况下,允许两个接口的边充边放。
在其中一个实施例中,当判断第一接口20接入了充电设备220时,本实施例提供的控制方法还包括:若第二接口30接入了3C充电设备320时,
检测第一接口20接入的充电设备220对电芯组10的第一充电电流I ,及第二接口30接入的3C充电设备320对电芯组10的第二充电电流I 3C
当判断第一充电电流I 与第二充电电流I 3C之和I +I 3C高于电芯组10的充电电流阈值I MAX时,断开开关模块40以禁止3C充电设备320通过第二接口30对电芯组10充电。
即:当电池包100的两个接口均接入了充电设备时,需要分别检测两个充电设备对电芯组10的充电电流I 与I 3C,并比较两个充电电流之和I +I 3C与电池包100预存的最大充电电流阈值I MAX,若高出了最大充电电流阈值I MAX,为了保证电芯组10不受损坏,需断开第二接口30的充电。当两个充电社保同时充电时,能在一定程度上提高充电速率,且电池包100在检测充电电流过大时,也会及时断开附加的3C充电设备的充电,保证的电池组的安全。
在其中的一个实施例中,本实施例提供的充放电控制方法还包括:
电气设备参数至少包括表征电气设备类型的参数,所述表征电气设备类型的参数至少包括端子设置参 数、设备类型、电压、电流、温度、功率和电参数的变化率。通过检测的上述表征电气设备类型的参数,对第一接口20接入的电气设备类型进行准确判断,从而实现对第二接口30充放电工作的实时控制,以达到安全且便利的效果。
在其中的一个实施例中,本实施例提供的充放电控制方法还包括:根据所述表征电气设备类型的参数判断所述电气设备的设备类型;当电气设备是用电设备210时,
当电气设备参数中的至少一种参数满足预设条件,例如至少一种参数不小于预设阈值时,判断用电设备210是大功率用电设备211;其中,电气设备参数至少包括设备类型、电压、电流、温度、功率等参数;具体地,电气设备参数至少包括表征电气设备类型的参数,所述表征电气设备类型的参数至少包括端子设置参数、设备类型、电压、电流、温度、功率和电参数的变化率。例如,当用电设备的功率不小于预设功率,或用电设备的电机功率不小于预设电机功率,或用电设备中配备了电机时,用电设备被判定为大功率用电设备。
又例如,若使用端子设置参数作为表征电气设备类型的参数进行判断时,若识别到用电设备210未设置通信端子时,判断用电设备210为小功率用电设备211,控制允许电池包100对第二接口30的充放电;若识别到用电设备210至少设置一个通信端子时,使用通信端子实现电池包100与用电设备210之间的信号传输。
具体地,当第一接口20接入电气设备200时,电池包100的电源端子21、24和两个通信端子22、23均接入电气设备200的接口。若控制模块50检测到模拟通信端子23处电平发生变化,或检测到表征特定状态的电平信号,判断电气设备200设置了模拟通信端子23’,并通过模拟通信端子23进行信号传输;第一接口20接入电气设备200时,电池包100通过数字通信端子22发出握手信号,若未在预定时间内接收到电气设备200的握手回复信号或接收到非对应的握手回复信号,则判断电气设备200未设置数字通信端子22’;反之若握手成功,则通过数字通信端子22进行通信,并基于通信获取电气设备参数,控制第一接口20和第二接口30的充放电工作。
在其中的一个实施例中,在检测第一接口20的电气设备200的电气设备参数和/或检测第二接口30的3C设备300的3C设备参数的步骤之前,本实施例提供的充放电控制方法还包括:
检测第一接口20和/或第二接口20的配接状态,若判断第一接口20和/或第二接口30接入了设备,与电气设备200和/或3C设备300建立通信,并检测第一接口20和/或第二接口30的接入设备的对应电气设备参数和/或3C设备参数。
具体的,控制模块50会对第一接口20和第二接口30的设备接入进行判断和识别,有设备接入时,通过通信端子23和/或24激活控制模块50,同时控制模块50与对应设备通过通信端子23和/或24建立通信。
在其中的一个实施例中,电池包100的第一接口20设置了电源正极端子21、电源负极端子24、数字通信端子22和模拟通信端子23。对应地,电气设备的接口20’对应设置了电源正极端子21’、电源负极端子24’、数字通信端子22’和模拟通信端子23’。此时,控制模块50通过数字和模拟两种方式与电气设备200通信
在其中的一个实施例中,当第一接口20接入的电气设备200仅设置了数字通信端子22’和模拟通信端子23’中的一个,即:只有数字通信端子22’或只有模拟通信端子23’,则控制模块50通过对应的方式与电气设备200进行通信。
特别地,若判断电气设备200未设置通信端子,仅设置了电源端子,则判断电气设备200为小功率工具以进行控制。关于判断方式和具体通信控制,请参见实施例一的描述,在此不再赘述。
下面结合图15,以一个具体示例对本实施例提供的充放电控制方法进行说明:
步骤S500:识别第一接口20处的电气设备200的接入状态;控制模块50循环监测第一接口20处的设备接入情况,若识别到电气设备200接入,立即执行S502。
步骤S502:第一接口20插入设备后,检测插入的电气设备200的电气设备参数,并根据电气设备参数判断电气设备200的设备类型。根据不同的设备类型,对第一接口20和第二接口30选择不同的充放电控制策略。
若判断电气设备200是大功率工具211,则执行步骤S510;若判断电气设备200为非大功率用电设备,则执行步骤S520;若判断电气设备是充电设备220即专用充电器220,则执行步骤S560。
步骤S512:判断第一接口20接入了大功率用电设备211时,控制模块50根据检测的电气设备参数获知大功率用电设备211的用电需求,并检测电芯组的参数判断是否适合放电,若电芯组10适合放电,则控制电芯组匹配大功率用电设备211的用电需求控制电芯组通过第一接口20对外放电,同时进入步骤S514。
可以理解的是,若无法获知大功率用电设备211的用电需求,则电池包100以全功率对第一接口20输出电能。
步骤S514:控制模块50输出禁止指令,或直接控制,以断开开关模块40,从而禁止第二接口30的充放电,避免了大功率用电设备211在工作的过程中对第二接口30电通路的损伤,也保证了大功率用电设备211的供电需求。
步骤S522:判断第一接口20接入了非大功率用电设备,如小功率用电设备214时,控制模块50根据检测的电气设备参数获知小功率用电设备214的用电需求,并检测电芯组的参数判断是否适合放电,若电芯组10适合放电,则控制电芯组匹配小功率用电设备214的用电需求控制电芯组10通过第一接口20对外放电,同时进入步骤S523。
步骤S523:小功率用电设备214接入第一接口20时,允许第二接口30的工作。控制模块识别第二接口30的设备接入情况,若无设备接入,则继续循环检测,若接入了3C设备300,检测3C设备300的3C设备参数,并判断3C设备300的设备类型。若判断3C设备300是3C负载设备310,进入步骤S524;若判断3C设备300是3C充电设备320,进入步骤S526。
步骤S524-S525:当判断3C设备300是3C负载设备310时,输出允许指令,闭合电芯组10与第二接口20的电通路。控制模块50根据检测的3C设备参数获知3C负载设备310的用电需求,并检测电芯组的参数判断是否适合放电,若电芯组10适合放电,则控制电芯组匹配3C负载设备310的用电需求,控制允许电芯组10通过第二接口30对3C负载设备放电;若控制模块50根据检测的3C设备参数获知3C负载设备310的充满信号时,控制模块50进入待机模式。
步骤S526-S527:当判断3C设备300是3C充电设备320时,输出允许指令,闭合电芯组10与第二接口20的电通路。控制模块50根据检测的3C设备参数获知3C充电设备320的充电能力,并检测电芯组的参数判断是否适合充电,若电芯组10适合充电,则控制3C充电设备320的充电能力与电芯组10的充电需求相匹配,控制允许第二接口30接受来自3C充电设备的充电。
步骤S562:判断第一接口20接入了充电设备220时,检测电芯组的参数判断是否适合充电,若电芯组10适合充电,控制由充电设备220即专用充电器通过第一接口20对电芯组10充电;同时进入步骤S563。
步骤S563:充电设备220接入第一接口20时,允许第二接口30的工作。控制模块识别第二接口30的设备接入情况,若无设备接入,则继续循环检测,若接入了3C设备300,检测3C设备300的3C设备参数,并判断3C设备的设备类型。若判断3C设备300是3C负载设备310,进入步骤S570;若判断3C设备300是3C充电设备320,进入步骤S580。
步骤S570-S572:当判断3C设备300是3C负载设备310时,输出允许指令,闭合电芯组10与第二 接口20的电通路。控制模块50根据检测的3C设备参数获知3C负载设备310的用电需求,并检测电芯组的参数判断是否适合放电,若电芯组10适合放电,则控制电芯组匹配3C负载设备310的用电需求,控制允许电芯组10通过第二接口30对3C负载设备放电;若控制模块50根据检测的3C设备参数获知3C负载设备310的充满信号时,控制模块50进入待机模式。
步骤S580-S582:当判断3C设备300是3C充电设备320时,输出允许指令,闭合电芯组10与第二接口20的电通路。同时进入步骤S583。
步骤S583-S584:检测充电设备220即专用充电器220对电芯组的第一充电电流I ,同时检测3C充电设备320对电芯组10充电的充电电流I 3C,将充电设备220即专用充电器220的充电电流I 与3C充电设备320的充电电流I 3C之和与预存储的最大允许充电电流I MAX比较,并根据比较结果控制第二接口30的工作,进入步骤S586/S588。
步骤S586:若充电电流之和I +I 3C不高于最大允许充电电流I MAX,输出允许指令,控制允许第二接口30接受来自3C充电设备的充电。
步骤S588:若充电电流之和I +I 3C大于最大允许充电电流I MAX,输出禁止指令,控制禁止第二接口30接受来自3C充电设备的充电。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。

Claims (25)

  1. 一种电池包,其特征在于,所述电池包包括:
    电芯组;
    第一接口,用于可拆卸地配接电气设备;
    第二接口,用于可拆卸地配接3C设备;
    开关模块,电连接于电池包的电芯组和所述第二接口之间;
    所述电池包还包括控制模块,所述控制模块被配置为,
    检测所述第一接口接入的电气设备的电气设备参数,检测所述第二接口接入的3C设备的3C设备参数;并根据所述电气设备参数控制所述第一接口工作,根据所述电气设备参数和/或所述3C设备参数控制允许所述第二接口工作;
    所述控制模块通过控制所述开关模块以允许所述第二接口的工作。
  2. 根据权利要求1所述的电池包,其特征在于,
    所述开关模块包括第一开关模块,所述第一开关模块包括开关元件和开关驱动电路,所述开关驱动电路电连于所述控制模块与所述开关元件之间,所述控制模块控制所述开关驱动电路驱动闭合所述开关元件以允许所述第二接口工作。
  3. 根据权利要求1所述的电池包,其特征在于,
    所述控制模块被配置为,根据所述电气设备参数判断所述电气设备的设备类型,所述电气设备的设备类型包括用电设备和充电设备;
    当所述控制模块判断所述电气设备是所述用电设备时,所述控制模块控制所述电芯组通过所述第一接口向所述用电设备供电;
    当所述控制模块判断所述电气设备是所述充电设备时,所述控制模块控制由所述充电设备通过所述第一接口向所述电芯组充电。
  4. 根据权利要求3所述的电池包,其特征在于,
    所述用电设备包括大功率用电设备和小功率用电设备;
    所述控制模块还被配置为,
    当所述控制模块判断所述用电设备是大功率用电设备时,所述控制模块控制所述开关模块以禁止所述第二接口工作;
    当所述控制模块判断所述用电设备是小功率用电设备或充电设备时,所述控制模块控制所述开关模块以允许所述第二接口工作。
  5. 根据权利要求3所述的电池包,其特征在于,
    所述控制模块还被配置为,根据所述3C设备参数判断所述3C设备的设备类型,所述3C设备的设备类型至少包括3C负载设备和3C充电设备。
  6. 根据权利要求4和5所述的电池包,其特征在于,
    当所述控制模块判断所述电气设备是小功率用电设备;
    且当所述控制模块判断所述3C设备是所述3C负载设备时,所述控制模块控制所述开关模块以允许所述电芯组通过所述第二接口向所述3C负载设备供电;
    当所述控制模块判断所述3C设备是所述3C充电设备时,所述控制模块控制所述开关模块以允许由所述3C充电设备通过所述第二接口对所述电芯组充电。
  7. 根据权利要求4和5所述的电池包,其特征在于,
    当所述控制模块判断所述电气设备是充电设备,
    且当所述控制模块判断所述3C设备是3C负载设备时,所述控制模块控制所述开关模块以允许所述电 芯组通过所述第二接口向所述3C负载设备供电。
  8. 根据权利要求4和5所述的电池包,其特征在于,
    当所述控制模块判断所述3C设备是3C充电设备时,所述控制模块被配置为:
    检测所述第一接口接入的所述充电设备对所述电芯组的第一充电电流,及所述第二接口接入的所述3C充电设备对所述电芯组的第二充电电流;
    当所述控制模块判断所述第一充电电流与所述第二充电电流之和高于所述电芯组的最大充电电流阈值时,所述控制模块控制断开所述开关模块以禁止所述3C充电设备通过所述第二接口对所述电芯组充电;
    当所述控制模块判断所述第一充电电流与所述第二充电电流之和不高于所述电芯组的最大充电电流阈值时,所述控制模块控制所述开关模块以允许所述3C充电设备通过所述第二接口对所述电芯组充电。
  9. 根据权利要求4所述的电池包,其特征在于,所述电气设备参数至少包括表征电气设备类型的参数,所述表征电气设备类型的参数至少包括端子设置参数、设备类型、电压、电流、温度、功率和电参数的变化率。
  10. 根据权利要求9所述的电池包,其特征在于,
    所述控制模块根据所述表征电气设备类型的参数判断所述电气设备的设备类型;
    所述控制模块判断所述电气设备是所述用电设备时,所述控制模块被配置为,当判断所述电气设备参数中的至少一种参数不小于预设阈值时,判断所述用电设备是大功率用电设备。
  11. 根据权利要求1所述的电池包,其特征在于,
    所述第一接口包括电源端子和至少一个通信端子,所述通信端子用于所述控制模块与所述电气设备通信。
  12. 根据权利要求11所述的电池包,其特征在于,
    所述电池包与所述电气设备通过数字通信和/或模拟通信的方式进行通信。
  13. 根据权利要求1所述的电池包,其特征在于,
    所述电池包还包括第二接口控制电路,所述第二接口控制电路串联于所述控制模块与所述第二接口之间,所述第二接口控制电路检测所述第二接口配接的所述3C设备的所述3C设备参数并传输给所述控制模块,或接收所述控制模块的控制信号以控制所述第二接口的充放电。
  14. 根据权利要求13所述的电池包,其特征在于,
    所述开关模块还包括第二开关模块,所述第二开关模块电连于所述第二接口控制电路与所述第二接口之间,被配置为接收所述第二接口控制电路的控制信号以控制所述第二接口的工作。
  15. 根据权利要求1所述的电池包,其特征在于,
    所述第二接口为USB Type-C接口,所述第二接口控制电路与所述控制模块之间通过UATR或I2C的方式实现通信。
  16. 一种电池包的充放电控制方法,所述电池包包括:电芯组;第一接口,用于可拆卸地配接电气设备;第二接口,用于可拆卸地配接3C设备;开关模块,电连接于电池包的电芯组和所述第二接口之间;其特征在于,所述方法包括如下步骤:
    检测所述第一接口接入的电气设备的电气设备参数;
    检测所述第二接口接入的3C设备的3C设备参数;
    根据所述电气设备参数控制所述第一接口工作;
    根据所述电气设备参数和/或所述3C设备参数控制所述开关模块以选择允许所述第二接口的工作。
  17. 根据权利要求16所述的充放电控制方法,其特征在于,所述根据所述电气设备参数控制所述第一接口工作的步骤包括:
    根据所述电气设备参数判断所述电气设备的设备类型,所述电气设备的设备类型包括用电设备和充电设备;
    当判断所述电气设备是用电设备时,控制所述电芯组通过所述第一接口向所述用电设备供电;
    当判断所述电气设备是充电设备时,控制由所述充电设备通过所述第一接口向所述电芯组充电。
  18. 根据权利要求17所述的电池包的充放电控制方法,其特征在于,所述用电设备包括大功率用电设备和小功率用电设备;所述根据所述电气设备参数控制所述第一接口工作的步骤还包括:
    若根据所述电气设备参数判断所述电气设备是大功率用电设备时,
    断开所述开关模块以禁止所述第二接口的工作;
    若判断所述电气设备是小功率用电设备或充电设备时,闭合所述开关模块以允许所述第二接口工作。
  19. 根据权利要求16所述的充放电控制方法,其特征在于,所述控制方法还包括:
    根据所述3C设备参数判断所述3C设备的设备类型;所述3C设备的设备类型至少包括3C负载设备和3C充电设备。
  20. 根据权利要求18和19所述的充放电控制方法,其特征在于,所述根据所述电气设备参数和/或所述3C设备参数控制所述开关模块以选择允许所述第二接口工作的步骤包括:
    当判断所述电气设备是小功率用电设备,且
    当判断所述3C设备是3C负载设备时,闭合所述开关模块以允许所述电芯组通过所述第二接口向所述3C负载设备供电;
    当判断所述3C设备是3C充电设备时,闭合所述开关模块以允许由所述3C充电设备通过所述第二接口对所述电芯组充电。
  21. 根据权利要求18和19所述的充放电控制方法,其特征在于,所述根据所述电气设备参数和/或所述3C设备参数控制所述开关模块以选择允许所述第二接口工作的步骤包括:
    当判断所述电气设备是充电设备,且
    当判断所述3C设备是3C负载设备时,闭合所述开关模块以允许所述电芯组通过所述第二接口向所述3C负载设备供电。
  22. 根据权利要求18和19所述的充放电控制方法,其特征在于,所述根据所述电气设备参数和/或所述3C设备参数控制所述开关模块以选择允许所述第二接口工作的步骤包括:
    当判断所述电气设备是充电设备,且
    当根据所述3C设备参数判断所述3C设备是所述3C充电器时,
    检测所述第一接口接入的所述充电设备对所述电芯组的第一充电电流,及所述第二接口接入的所述3C充电设备对所述电芯组的第二充电电流;
    当判断所述第一充电电流与所述第二充电电流之和高于所述电芯组的最大充电电流阈值时,断开所述开关模块以禁止所述3C充电设备通过所述第二接口对所述电芯组充电;
    当判断所述第一充电电流与所述第二充电电流之和不高于所述电芯组的最大充电电流阈值时,闭合所述开关模块以允许所述3C充电设备通过所述第二接口对所述电芯组充电。
  23. 根据权利要求18所述的充放电控制方法,其特征在于,
    所述电气设备参数至少包括表征电气设备类型的参数,所述表征电气设备类型的参数至少包括端子设置参数、设备类型、电压、电流、温度、功率和电参数的变化率。
  24. 根据权利要求23所述的充放电控制方法,其特征在于,所述充放电控制方法还包括:
    根据所述表征电气设备类型的参数判断所述电气设备的设备类型;
    当判断所述电气设备是用电设备时,
    当所述电气设备参数中的至少一种参数不小于预设阈值时,判断所述用电设备是大功率用电设备。
  25. 根据权利要求16所述的充放电控制方法,其特征在于,所述检测所述第一接口的电气设备参数和/或检测所述第二接口的3C设备的3C设备参数的步骤之前,所述充放电控制方法还包括:
    检测所述第一接口和/或所述第二接口的配接状态,若判断所述第一接口和/或所述第二接口接入了设备,获取所述第一接口和/或第二接口的接入设备的对应电气设备参数和/或3C设备参数。
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