WO2022001953A1 - Batterie à fonction d'autodécharge pour outil électrique - Google Patents

Batterie à fonction d'autodécharge pour outil électrique Download PDF

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Publication number
WO2022001953A1
WO2022001953A1 PCT/CN2021/102747 CN2021102747W WO2022001953A1 WO 2022001953 A1 WO2022001953 A1 WO 2022001953A1 CN 2021102747 W CN2021102747 W CN 2021102747W WO 2022001953 A1 WO2022001953 A1 WO 2022001953A1
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WIPO (PCT)
Prior art keywords
battery
self
discharge
terminal
battery cover
Prior art date
Application number
PCT/CN2021/102747
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English (en)
Chinese (zh)
Inventor
沈海明
Original Assignee
苏州英途康医疗科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN202010635825.6A external-priority patent/CN113889634A/zh
Priority claimed from CN202021285610.8U external-priority patent/CN212303713U/zh
Application filed by 苏州英途康医疗科技有限公司 filed Critical 苏州英途康医疗科技有限公司
Publication of WO2022001953A1 publication Critical patent/WO2022001953A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature

Definitions

  • the present disclosure relates to the technical field of batteries, and in particular, to a battery pack with a self-discharge function and an electric tool.
  • Stapler is a medical device that can replace traditional manual suture. Due to the development of modern technology and the improvement of manufacturing technology, the stapler used in clinic is of reliable quality and easy to use. It has the advantages of few side effects and surgical complications. Typically, staplers are single-use devices to avoid cross-contamination, and must be powered by batteries with full power to avoid suture interruptions due to insufficient power, or even unforeseen accidents. Therefore, in this type of power tool, the battery is a disposable product.
  • the battery When the battery is used as a disposable product, most of the used batteries have residual power, for example, the residual power is 50%, and even higher than 70%. These batteries are usually discarded directly after use. However, due to the sufficient power in the batteries, when the positive and negative electrodes of these batteries are connected by conductive substances, a closed loop will be formed, which may cause the risk of accidental fire.
  • the present disclosure provides a battery pack and a power tool with a self-discharge function, which solve the technical problem that the risk of accidental fire may be caused when the power in the discarded battery is sufficient.
  • an embodiment of the present disclosure provides a battery pack with a self-discharge function, including a battery box, a self-discharge unit and a battery cover, the self-discharge unit includes a self-discharge switch, and the self-discharge switch is used to control whether the self-discharge unit is discharged
  • the self-discharge unit includes a self-discharge switch
  • the self-discharge switch is used to control whether the self-discharge unit is discharged
  • the battery pack with self-discharge function proposed by the embodiments of the present disclosure includes a battery box, a self-discharge unit and a battery cover.
  • the self-discharge unit further includes a self-discharge switch for controlling whether the self-discharge unit performs discharge work.
  • the battery box is provided with a self-discharge switch.
  • the positive terminal of the battery cell is connected to one end of the self-discharge unit, and the negative terminal of the battery cell is connected to the other end of the self-discharge unit through the battery cover.
  • the self-discharge switch In order to prohibit the self-discharge unit from discharging, and when the battery box is pulled out from the power tool and the battery cover is not inserted, the self-discharge switch is closed, so that the self-discharge unit can discharge. Therefore, by setting the self-discharge unit, the battery box and the battery cover, and whether the self-discharge switch is disconnected or not is controlled by whether the battery box and the battery cover are plugged or not, and then control whether the self-discharge unit performs self-discharge work, so as to control whether the self-discharge switch is disconnected or not. To achieve the purpose of discharging the cells in the battery pack when the battery pack is no longer used or discarded, so as to reduce the power of the cells to a safe power range, thereby effectively avoiding the sufficient power of the discarded cells. resulting in safety incidents.
  • the self-discharge switch is a normally-closed relay
  • the self-discharge unit further includes a self-discharge resistor, wherein one end of the normally-closed switch in the normally-closed relay is connected to the positive terminal of the cell, and the normally-closed switch in the normally-closed relay is connected to the positive terminal of the cell.
  • the other end is connected to the negative terminal of the battery cell through the self-discharge resistance, one end of the coil in the normally closed relay is connected to the positive terminal of the battery cell, the other end of the coil in the normally closed relay is connected to the discharge pin in the battery cover, and the battery
  • the discharge pin in the cover is connected to the negative pin in the battery cover and then connected to the negative terminal of the cell. Therefore, the self-discharge function of the battery pack can be realized by the circuit formed by the normally closed relay and the self-discharge resistor, and the circuit structure is simple and the reliability is high.
  • the battery pack with self-discharge function further includes an output control unit, one end of the output control unit is connected to the positive terminal of the battery cell, and the other end of the output control unit is connected to the battery cover, wherein the battery box is unplugged from the battery cover and When plugged into a power tool, the output control unit is closed so that the battery compartment can supply power to the power tool. Therefore, the output control unit is provided in the battery pack, and the output control unit is in a closed state when the battery pack is in use, so as to achieve the purpose of supplying power to the electric tool.
  • the output control unit includes a normally open relay, one end of the normally open switch in the normally open relay is connected to the positive terminal of the battery cell, and the other end of the normally open switch in the normally open relay is connected to the positive terminal of the battery cover. , one end of the coil in the normally open relay is connected to the positive terminal of the battery cell, and the other end of the coil in the normally open relay is connected to the output control pin in the battery cover. Therefore, a power supply circuit can be formed through the normally open relay, so as to realize the power supply function of the battery pack, and the circuit structure is simple and the reliability is high.
  • both the self-discharge unit and the output control unit are arranged in the battery box, and the battery box is respectively provided with a positive terminal, an output control terminal, a discharge terminal and a negative terminal, and the positive terminal is used to connect the positive pin in the battery cover,
  • the output control terminal is used to connect to the output control pin in the battery cover
  • the discharge terminal is used to connect to the discharge pin in the battery cover
  • the negative terminal is used to connect to the negative pin in the battery cover. Therefore, by arranging corresponding connection terminals on the battery box, it is convenient to realize the electrical connection inside the battery pack and between the inside and the outside of the battery pack, thereby facilitating the realization of the self-discharge function and power supply function of the battery pack.
  • the positive terminal is connected to the positive power supply terminal of the main board in the power tool, and the output control terminal, the discharge terminal and the negative terminal are all connected to the negative power supply of the main board in the power tool. end. Therefore, when the battery pack is in use, the power supply function of the battery pack can be realized by electrically connecting the connection terminals on the battery box, and the operation is simple and convenient.
  • the battery box is further provided with a data terminal and a clock terminal, the data terminal is connected with the data pin in the battery cover, and the clock terminal is connected with the clock pin in the battery cover. Therefore, by setting the data terminal and the clock terminal, etc., it is convenient to realize the data transmission between the inside and the outside of the battery pack, and then it is convenient to realize the monitoring function of the battery pack.
  • an embodiment of the present disclosure provides a power tool, including: the above-mentioned battery pack with a self-discharge function; and a battery installation compartment, where the battery installation compartment is used for installing a battery box in the battery pack.
  • the power tool proposed by the embodiments of the present disclosure is provided with a self-discharge unit, a battery box and a battery cover, and whether the self-discharge switch is disconnected or not is controlled by whether the battery box and the battery cover are plugged or not, and then whether the self-discharge unit is controlled.
  • Carry out self-discharge work to achieve the purpose of discharging the cells in the battery pack when the battery pack is no longer used or discarded, so as to reduce the power of the cells to a safe power range, thereby effectively avoiding the discarded
  • the power of the battery is sufficient to cause a safety accident.
  • the battery installation compartment is provided on the handle of the power tool. Therefore, not only the design is beautiful, but also the position is eye-catching, which is convenient for users to disassemble and assemble.
  • the power tool is an electric stapler.
  • the beneficial effects of the present disclosure are: the battery pack and electric tool with self-discharge function of the present disclosure control whether the self-discharge switch is disconnected or not by using whether the battery cover and the battery box are plugged in or not, and then control whether the self-discharge unit is disconnected or not.
  • the battery pack and electric tool with self-discharge function of the present disclosure control whether the self-discharge switch is disconnected or not by using whether the battery cover and the battery box are plugged in or not, and then control whether the self-discharge unit is disconnected or not.
  • it can discharge the cells in the battery pack when the battery pack is no longer used, that is, discarded, so as to reduce the power of the cells to a safe power range, which achieves the The purpose of effectively avoiding the occurrence of situations that may cause the risk of accidental fire due to sufficient battery power.
  • 1-6 are schematic structural diagrams of a battery pack with a self-discharge function according to an embodiment of the present disclosure.
  • the battery pack and power tool with self-discharge function proposed by the embodiments of the present disclosure include a battery box, a self-discharge unit, and a battery cover.
  • the self-discharge unit includes a self-discharge switch for controlling whether the self-discharge unit performs discharge work. Inside the battery box There is a battery, the positive terminal of the battery is connected to one end of the self-discharge unit, and the negative terminal of the battery is connected to the other end of the self-discharge unit through the battery cover. When the battery box is inserted with the battery cover, the self-discharge switch is disconnected.
  • the self-discharge switch In order to prohibit the self-discharge unit from discharging, and when the battery box is pulled out from the power tool and the battery cover is not inserted, the self-discharge switch is closed to enable the self-discharge unit to discharge. Therefore, whether the self-discharge switch is disconnected or not is controlled by whether the battery box and the battery cover are plugged or not, and then whether the self-discharge unit is discharged or not is controlled, so that when the battery pack is no longer used or discarded, it can be
  • the purpose of discharging the cells in the battery pack is to reduce the power of the cells to a safe power range, thus effectively solving the technical problem that may cause an accidental fire risk when the power in the discarded battery pack is sufficient. the safety of discarded battery packs.
  • FIG. 1 is a schematic structural diagram of a battery pack with self-discharge function according to an embodiment of the disclosure.
  • the battery pack with self-discharge function includes a battery box 110 , a self-discharge unit 120 and a battery cover 130 .
  • the self-discharge unit 120 includes a self-discharge switch 121, and the self-discharge switch 121 is used to control whether the self-discharge unit 120 performs a discharge operation.
  • the battery box 110 is provided with a battery cell 140 , the positive end of the battery cell 140 is connected to one end of the self-discharge unit 120 , and the negative end of the battery cell 140 is connected to the other end of the self-discharge unit 120 through the battery cover 130 .
  • the self-discharge switch 121 When the battery case 110 is plugged with the battery cover 130, the self-discharge switch 121 is in an off state to prohibit the self-discharge unit 120 from discharging. When the battery case 110 is pulled out from the power tool and the battery cover 130 is not inserted, the self-discharge switch 121 Closed to make the self-discharge unit 120 perform a discharge operation.
  • the battery pack may include battery cells 140 , a self-discharge unit 120 , a battery case 110 and a battery cover 130 .
  • the battery cell 140 may be a single-cell battery, or composed of multiple single-cell batteries in series, parallel, or series-parallel, etc., and the single-cell battery may be a lead-acid battery or a lithium battery.
  • the self-discharge unit 120 includes a self-discharge switch 121 , and the self-discharge switch 121 is mainly used to control whether the self-discharge unit 120 performs a discharge operation.
  • the self-discharge switch 121 when the self-discharge switch 121 is in an off state, the self-discharge unit 120 is prohibited from discharging the battery cells 140 . ; When the self-discharge switch 121 is in the closed state, the battery cell 140 is discharged through the self-discharge unit 120 to reduce the power of the battery cell 140 to a safe power range, such as a range close to zero.
  • the battery box 110 is matched with the battery cover 130, wherein the battery box 110 is mainly used for placing the battery cell 140, the self-discharge unit 120 and other components to protect the battery cell 140, the self-discharge unit 120 and other components.
  • the battery cover 130 is detachably arranged on the battery box 110, for example, is arranged on the battery box 110 in a plug-in manner, and is mainly used for plugging the battery pack on the battery box 110 when the battery pack is not in use, so as to make the
  • the discharge switch 121 is in an off state, at this time, the self-discharge unit 120 is prohibited from discharging the battery cells 140, so as to ensure the safety of the battery pack and the adequacy of power when it is not used; and the battery pack needs to be discarded after it is used At this time, it is no longer plugged into the battery box 110 so that the self-discharge switch 121 is in a closed state. At this time, the battery cells 140 are discharged through the self-discharge unit
  • the battery case 110 can be installed in a power tool (such as a stapler), so that the battery cells 140 can supply power to the power tool; when the battery pack is used and needs to be discarded, the battery case 110 Pull out the power tool, and no longer plug the battery cover 130 on the battery box 110 , so that the self-discharge switch 121 is in a closed state. At this time, the self-discharge unit 120 discharges to discharge the battery cells 140 .
  • a power tool such as a stapler
  • a self-discharge unit, a battery box and a battery cover are provided, and whether the self-discharge switch is disconnected or not is controlled by whether the battery box and the battery cover are plugged in or not, thereby controlling whether the self-discharge unit performs self-discharge work.
  • the self-discharge switch 121 is a normally closed relay J1
  • the self-discharge unit 120 further includes a self-discharge resistor R.
  • one end of the normally closed switch in the normally closed relay J1 is connected to the positive terminal of the battery cell 140
  • the other end of the normally closed switch in the normally closed relay J1 is connected to the negative terminal of the battery cell 140 through the self-discharge resistance R
  • the normally closed One end of the coil in the closed relay J1 is connected to the positive terminal of the battery cell 140
  • the other end of the coil in the normally closed relay J1 is connected to the discharge pin TH in the battery cover 130
  • the discharge pin TH in the battery cover 130 is connected to the battery
  • the negative pin P- in the cover 130 is connected to the negative terminal of the battery cell 140 after being connected.
  • the self-discharge unit 120 may be composed of a normally closed relay J1 and a self-discharge resistor R, wherein the positive terminal of the battery cell 140 is connected to one end of the coil in the normally closed relay J1 and one end of the normally closed switch in the normally closed relay J1 respectively.
  • the other end of the normally closed switch in the normally closed relay J1 is connected to the negative terminal of the battery cell 140 through the self-discharge resistance R, and when the battery cover 130 is inserted into the battery box 110, the coil in the normally closed relay J1
  • the other end and the negative terminal of the battery cell 140 are correspondingly connected to the pins in the battery cover 130, so that under the action of the battery cover 130, the normally closed relay J1 is controlled on and off, so as to determine whether to pass the self-discharge resistance R to the battery cell. 140 to discharge.
  • the self-discharge resistor R can be a single resistor or a plurality of resistors connected in series. The power of the battery cell 140 is consumed through the self-discharge resistor R to achieve the purpose of discharging the battery cell 140 , and the resistance value of the self-discharge resistor R It can be set according to the discharge time, which is not limited here.
  • the battery cover 130 includes a discharge pin TH and a negative electrode pin P-, and the discharge pin TH is communicated with the negative electrode pin P- (eg, communicated through a metal wire).
  • the discharge pin TH is communicated with the negative electrode pin P- (eg, communicated through a metal wire).
  • the other end of the coil in the normally closed relay J1 is connected to the discharge pin TH in the battery cover 130
  • the negative terminal of the battery cell 140 is connected to the negative terminal of the battery cover 130 .
  • Pin P- is connected, and at the same time, because the discharge pin TH is connected with the negative pin P-, the battery cell 140, the coil in the normally closed relay J1, the discharge pin TH in the battery cover 130 and the negative electrode in the battery cover 130 are connected.
  • Pin P- forms a closed loop, the coil in the normally closed relay J1 is energized, and the normally closed switch in the normally closed relay J1 is disconnected. At this time, it is forbidden to discharge the battery cell 140 through the self-discharge resistor R; When connected to the battery box 110, the other end of the coil in the normally closed relay J1 is in a disconnected state from the negative terminal of the battery cell 140, the coil in the normally closed relay J1 has no electricity, and the normally closed circuit in the normally closed relay J1 is in a disconnected state. The switch is in the closed state. At this time, the battery cell 140, the normally closed switch in the normally closed relay J1, and the self-discharge resistor R form a closed loop. When discarded, it can self-discharge to avoid safety accidents caused by the sufficient power of the discarded battery pack.
  • a self-discharge circuit is formed by a normally closed relay and a self-discharge resistor, so as to realize the self-discharge function of the battery pack, and the circuit structure is simple and the reliability is high.
  • the self-discharge unit may also adopt other circuit structures, which are not specifically limited here.
  • the battery pack with self-discharge function further includes an output control unit 150 , one end of the output control unit 150 is connected to the positive end of the battery cell 140 , and the output control unit 150 The other end is connected to the battery cover 130, wherein the output control unit 150 is in a closed state when the battery box 110 is unplugged from the battery cover 130 and plugged into the power tool, so that the battery box 110 supplies power to the power tool.
  • the output control unit 150 can be arranged in the battery box 110, and when the battery pack is used, the battery cover 130 on the battery box 110 can be pulled out and installed on the power tool, for example, plugged into the power tool ( In the battery installation compartment of the stapler), the output control unit 150 is in a closed state at this time, and the battery cell 140 starts to supply power to the power tool.
  • the battery pack may include a battery cell 140 , a self-discharge unit 120 , an output control unit 150 , a battery box 110 and a battery cover 130 , wherein the battery cell 140 , the self-discharge unit 120 and the output control unit 150 Both are arranged in the battery box 110 , and the battery cover 130 is detachably arranged on the battery box 110 and has a connection circuit inside.
  • the battery cover 130 is plugged on the battery box 110 so that the self-discharge switch 121 is in an off state.
  • the self-discharge unit 120 does not discharge, that is, does not discharge the battery cell 140;
  • the pack When the pack is in use, unplug the battery cover 130 on the battery box 110 and plug it into the power tool.
  • the output control unit 150 is in a closed state, and the battery cell 140 supplies power to the power tool; after the battery pack is used and When it needs to be discarded, the battery box 110 is pulled out of the power tool and the battery cover 130 is no longer plugged into the battery box 110, so that the self-discharge switch 121 is in a closed state, and the self-discharge unit 120 discharges at this time. , to discharge the battery cell 140 .
  • a self-discharge unit an output control unit, a battery box and a battery cover
  • the battery cover not only can the battery cover be inserted into the battery box to protect the battery pack when the battery pack is not in use, but also The ability to power the power tool by inserting the battery case into the power tool when the battery pack is in use, and to be able to remove the battery case from the power tool and unplug it when the battery pack is discarded
  • the battery cover is used to discharge the battery cells to avoid safety accidents caused by sufficient battery power when the battery pack is discarded.
  • the output control unit 150 includes a normally open relay J2, one end of the normally open switch in the normally open relay J2 is connected to the positive terminal of the cell 140, and the normally open relay J2 The other end of the normally open switch is connected to the positive pin P+ in the battery cover 130, one end of the coil in the normally open relay J2 is connected to the positive terminal of the battery cell 140, and the other end of the coil in the normally open relay J2 is connected to the battery The output control pin SD in the cover 130 is connected.
  • the output control unit 150 may be constituted by the normally open relay J2, wherein the positive terminal of the battery cell 140 is connected to one end of the coil in the normally open relay J2 and one end of the normally open switch in the normally open relay J2, respectively, and when the battery When the box 110 is plugged into the power tool, the coil in the normally open relay J2 is energized through the corresponding connection line in the power tool, and the normally open switch in the normally open relay J2 is in a closed state, so that the battery core 140 is powered by the electric power tool. Tool power supply.
  • a power supply circuit is formed by a normally open relay, so as to realize the power supply function of the battery pack, and the circuit structure is simple and the reliability is high.
  • the output control unit may also adopt other circuit structures, which are not specifically limited here.
  • both the self-discharge unit 120 and the output control unit 150 are arranged in the battery box 110 , and the battery box 110 is respectively provided with a positive terminal P0+, an output control terminal SD0, a discharge terminal TH0 and a negative terminal.
  • P0- the positive terminal P0+ is used to connect to the positive pin P+ in the battery cover 130
  • the output control terminal SD0 is used to connect to the output control pin SD in the battery cover 130
  • the discharge terminal TH0 is used to connect the discharge pin in the battery cover 130 .
  • the pin TH, the negative terminal P0- is used to connect to the negative pin P- in the battery cover 130. Therefore, by arranging corresponding connection terminals on the battery box, it is convenient to realize the electrical connection inside the battery pack and between the inside and the outside of the battery pack, thereby facilitating the realization of the self-discharge function and power supply function of the battery pack.
  • the positive terminal P0+ is connected to the positive power supply terminal P1+ of the main board 210 in the power tool, and the output control terminal SD0 and the discharge terminal TH0 and the negative terminal P0- are both connected to the negative power supply terminal P1- of the main board 210 in the power tool.
  • the battery cover 130 on the battery box 110 can be unplugged and inserted into the battery installation compartment of the power tool.
  • the positive terminal P0+ on the battery box 110 is connected to the power tool.
  • the positive power supply terminal P1+ of the main board 210 is connected, and the output control terminal SD0, the discharge terminal TH0 and the negative terminal P0- are connected with the negative power supply terminal P1- of the main board 210 in the power tool through the connecting line on the main board 210 in the power tool.
  • the coil in the normally closed relay J1 is energized, the normally closed switch in the normally closed relay J1 is disconnected, and the self-discharge resistor R is prohibited from discharging the battery cell 140, and at the same time, the coil in the normally open relay J2 is energized and normally open The normally open switch in the relay J2 is in a closed state, and the battery cell 140 supplies power to the power tool.
  • the power supply function of the battery pack can be realized by electrically connecting the terminals on the battery box, and the operation is simple and convenient.
  • the battery box 110 is further provided with a data terminal and a clock terminal (not shown in the figure), the data terminal and the data pin in the battery cover 130 (not shown in the figure). ) is connected, and the clock terminal is connected with the clock pin (not shown in the figure) in the battery cover 130 .
  • the data terminal and the clock terminal it is convenient to realize the data transmission between the inside and the outside of the battery pack, so as to facilitate the realization of the monitoring function of the battery pack.
  • a battery management unit is provided in the battery box 110, and the data output terminal of the battery management unit is connected to the data terminal on the battery box 110, and the clock signal terminal is connected to the clock terminal on the battery box 110.
  • the battery cover 130 on the battery box 110 is unplugged and inserted into the power tool.
  • the data terminal on the battery box 110 is connected with the data acquisition terminal of the main board 210 in the power tool, and the clock terminal on the battery box 110 is connected to the power tool.
  • the clock signal terminal of the main board 210 is connected, and the battery management unit transmits the relevant information of the battery pack, such as cell power information, voltage information, etc., to the power tool through the data terminal of the battery box 110, and synchronizes through the clock terminal.
  • a battery pack may include a battery cell 140 , a self-discharge unit 120 , an output control unit 150 , a battery management unit, a battery box 110 and a battery cover 130 , wherein the battery cells 140 , The self-discharge unit 120, the output control unit 150, the battery management unit, etc.
  • the battery case 110 is provided with a positive terminal P0+, an output control terminal SD0, a discharge terminal TH0, a negative terminal P0-, a data terminal and a clock
  • set 10 pins (Pin) on the battery cover 130 as shown in Table 1, and among these 10 pins, the positive pin P+, the output control pin SD, the clock pin CLK, and the data pin
  • the DATA and the negative pin P- are both floating, and the discharge pin TH is connected to at least one negative pin P-; at the same time, a connector corresponding to the pins of the battery cover 130 is set on the main board 210 of the power tool. And the connector is connected to the output control pin SD, the discharge pin TH and the terminal corresponding to at least one negative pin P- in the battery cover 130 (refer to FIG. 5).
  • the battery cover 130 When the battery pack is not in use, for example, when the battery pack leaves the factory, the battery cover 130 is inserted into the battery box 110. Since the discharge pin TH of the battery cover 130 is connected to at least one negative pin P-, the normally closed The coil in the relay J1 is energized, the normally closed switch in the normally closed relay J1 is disconnected, the self-discharge resistance R is disconnected, and no self-discharge is performed at this time; when the battery pack is used, for example, to supply power to a power tool, at this time Unplug the battery cover 130 from the battery box 110, and plug the battery box 110 into the power tool, because the main board 210 of the power tool is connected to the output control pin SD, the discharge pin TH and at least one of the output control pins SD in the battery cover 130.
  • the terminals corresponding to the negative pin P- are connected, so that the output control terminal SD0, the discharge terminal TH0 and the negative terminal P0- of the battery box 110 are connected, so that the coil in the normally closed relay J1 and the coil in the normally open relay J2 are connected.
  • the battery management unit also passes the clock terminal and The data terminal sends the relevant data of the battery pack, such as the power of the battery cells, to the power tool by serial synchronous transmission (such as SMBUS, IIC and other communication methods); when the battery pack is used and needs to be discarded, the battery box 110 Unplug the power tool and no longer plug the battery cover 130.
  • serial synchronous transmission such as SMBUS, IIC and other communication methods
  • the coil in the normally closed relay J1 Since all the terminals of the battery box 110 are floating, the coil in the normally closed relay J1 has no electricity, the normally closed switch in the normally closed relay J1 is closed, and the self-discharge resistance R is turned on, and self-discharge is performed at this time, so as to discharge the power of the battery cell 140 to a safe power range within a specified time, so as to avoid accidents such as fire.
  • the battery pack with the self-discharge function proposed by the embodiments of the present disclosure can self-discharge the battery pack when it is discarded, so as to prevent the occurrence of safety accidents.
  • An embodiment of the present disclosure further provides a power tool, which includes the above-mentioned battery pack with a self-discharge function and a battery installation compartment, where the battery installation compartment is used for installing a battery box in the battery pack.
  • the battery mounting compartment is provided on the handle of the power tool. Therefore, not only the design is beautiful, but also the position is eye-catching, which is convenient for users to disassemble and assemble.
  • the power tool is a power stapler.
  • the battery pack with the self-discharge function in the embodiment of the present disclosure can be used not only in staplers, but also in other electric tools or other electrical equipment, which is not specifically limited here.
  • the power tool proposed by the embodiments of the present disclosure is provided with a self-discharge unit, a battery box and a battery cover, and whether the self-discharge switch is disconnected or not is controlled by whether the battery box and the battery cover are plugged or not, and then whether the self-discharge unit is controlled.
  • Carry out self-discharge work to achieve the purpose of discharging the cells in the battery pack when the battery pack is no longer used or discarded, so as to reduce the power of the cells to a safe power range, thereby effectively avoiding the discarded
  • the power of the battery is sufficient to cause a safety accident.
  • first and second are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as “first”, “second” may expressly or implicitly include one or more of that feature.
  • plurality means two or more, unless expressly and specifically defined otherwise.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of the two elements or the interaction relationship between the two elements.
  • installed may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of the two elements or the interaction relationship between the two elements.
  • a first feature is “above” or “under” a second feature, either in direct contact with the first and second features, or through an intermediary between the first and second features indirect contact.
  • the first feature is “above”, “above” and “above” the second feature, which may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature .
  • the first feature is “below”, “below” and “below” the second feature, which can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is level below the second feature.

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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Batterie dotée d'une fonction d'autodécharge pour un outil électrique. La batterie comprend un boîtier de batterie (110), une unité d'autodécharge (120) et un couvercle de batterie (130). L'unité d'autodécharge (120) comprend un commutateur d'autodécharge (121). Le commutateur d'autodécharge (121) est utilisé pour commander si l'unité d'autodécharge (120) effectue une tâche de décharge ou non. Une cellule de batterie (140) est disposée dans le boîtier de batterie (130). L'extrémité d'électrode positive de la cellule de batterie (140) est reliée à une extrémité de l'unité d'autodécharge (120), et l'extrémité d'électrode négative de la cellule de batterie (140) est reliée à l'autre extrémité de l'unité d'autodécharge (120) au moyen du couvercle de batterie (130). Lorsque le couvercle de batterie (130) est inséré dans le boîtier de batterie (110), le commutateur d'autodécharge (121) est dans un état éteint pour empêcher l'unité d'autodécharge (120) de se décharger. Lorsque le boîtier de batterie (110) est extrait d'un outil électrique et n'est pas inséré avec le couvercle de batterie (130), le commutateur d'autodécharge (121) est mis en marche, de telle sorte que l'unité d'autodécharge (120) effectue une tache de décharge. La batterie présente les effets bénéfiques suivants : lorsque la batterie est mise au rebut, la cellule de batterie (140) dans la batterie peut être soumise à une autodécharge, de sorte que des accidents de sécurité provoqués par une quantité électrique suffisante de la cellule de batterie mise au rebut (140) sont évités.
PCT/CN2021/102747 2020-07-03 2021-06-28 Batterie à fonction d'autodécharge pour outil électrique WO2022001953A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202010635825.6 2020-07-03
CN202010635825.6A CN113889634A (zh) 2020-07-03 2020-07-03 具有自放电功能的电池包、电动工具
CN202021285610.8 2020-07-03
CN202021285610.8U CN212303713U (zh) 2020-07-03 2020-07-03 具有自放电功能的电池包、电动工具

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09322414A (ja) * 1996-05-30 1997-12-12 Suzuki Motor Corp バッテリ用充放電制御回路
CN203691211U (zh) * 2013-12-27 2014-07-02 天地（常州）自动化股份有限公司 一种矿用变频器的放电回路
CN108110271A (zh) * 2017-12-20 2018-06-01 苏州英途康医疗科技有限公司 电池及电动工具
CN212303713U (zh) * 2020-07-03 2021-01-05 苏州英途康医疗科技有限公司 具有自放电功能的电池包、电动工具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09322414A (ja) * 1996-05-30 1997-12-12 Suzuki Motor Corp バッテリ用充放電制御回路
CN203691211U (zh) * 2013-12-27 2014-07-02 天地（常州）自动化股份有限公司 一种矿用变频器的放电回路
CN108110271A (zh) * 2017-12-20 2018-06-01 苏州英途康医疗科技有限公司 电池及电动工具
CN212303713U (zh) * 2020-07-03 2021-01-05 苏州英途康医疗科技有限公司 具有自放电功能的电池包、电动工具

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