CN215660083U - Battery pack and electric tool - Google Patents
Battery pack and electric tool Download PDFInfo
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- CN215660083U CN215660083U CN202120802328.0U CN202120802328U CN215660083U CN 215660083 U CN215660083 U CN 215660083U CN 202120802328 U CN202120802328 U CN 202120802328U CN 215660083 U CN215660083 U CN 215660083U
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- battery pack
- control unit
- temperature
- wire
- detection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application provides a battery package and electric tool, this battery package includes: at least one battery pack, wherein a positive connection wire, a negative connection wire, a charging wire and a communication wire are respectively led out; the detection unit is respectively connected with the battery pack and the charging wire, and is used for detecting the temperature and the voltage of the battery pack and disconnecting the charging wire when the battery pack is fully charged or the temperature is abnormal; the control unit is respectively connected with the detection unit, the communication line and the negative electrode wiring and is used for acquiring and storing battery pack detection data and external connection state parameters; determining the working state of the battery pack according to the battery pack detection data, and determining the working state of the external equipment according to the external state parameters; and when the working state of the battery pack is abnormal and/or the working state of the external equipment is abnormal, the negative electrode connection wire or the charging wire is controlled to be disconnected. The battery pack detection method and the battery pack detection device can acquire and store the detection data of the battery pack and the external connection state parameters of the external connection device, so that data support is provided for after-sale service and subsequent continuous development of the battery pack.
Description
Technical Field
The application belongs to the technical field of video processing, and particularly relates to a battery pack and an electric tool.
Background
With the development of battery technology, the design of battery packs (such as battery packs) is more stable and safer, the battery capacity is higher, and the practicability is wider, so that in recent years, direct-current electric tools (such as electric drills, electric saws, grinders and the like) are more and more popular.
However, most of the battery packs currently used in the electric power tools only have basic functions such as supplying power, so that the electric power tools are not intelligent to use, and faults of the electric power tools cannot be accurately determined.
Disclosure of Invention
The application provides a battery pack and an electric tool, which are provided with a control unit connected with external equipment, and can acquire and store detection data of a battery pack and external state parameters of the external equipment so as to provide data support for after-sale service and subsequent continuous development of the battery pack.
An embodiment of a first aspect of the present application provides a battery pack, including:
at least one battery pack, wherein a positive connection wire, a negative connection wire, a charging wire and a communication wire are respectively led out;
the detection unit is respectively connected with the battery pack and the charging wire, and is used for carrying out temperature detection and voltage detection on the battery pack and disconnecting the charging wire when the battery pack is fully charged or the temperature is abnormal;
the control unit is respectively connected with the detection unit, the communication line and the negative electrode connecting wire, and is used for acquiring and storing battery pack detection data detected by the detection unit, communicating with external equipment through the communication line, and acquiring and storing external state parameters of the external equipment; determining the working state of the battery pack according to the battery pack detection data, and determining the working state of the external equipment according to the external state parameters; and controlling the negative electrode connection wire or the charging wire to be disconnected when the working state of the battery pack is abnormal and/or the working state of the external equipment is abnormal.
Optionally, the detection unit includes a first chip unit, a first on-off switch for controlling on-off of the charging wire is disposed on the charging wire, and the first on-off switch is connected to the first chip unit and the control unit respectively;
the first chip unit is connected with the battery pack and used for detecting whether the battery pack reaches a preset voltage threshold and a preset temperature threshold, respectively generating a temperature signal and a first voltage signal, and controlling the on-off of the first on-off switch through the first voltage signal;
the first chip unit is connected with the control unit and used for sending the temperature signal and the first voltage signal to the control unit.
Optionally, the detection unit further includes a second chip unit, and the second chip unit is connected to the battery pack and the control unit, and is configured to detect the voltage of the battery pack in real time, generate and send a second voltage signal to the control unit.
Optionally, the battery pack further comprises a current sampling resistor, wherein the current sampling resistor is arranged on the negative connection wire and is positioned at one end, close to the battery pack, of the negative connection wire.
Optionally, the battery pack further comprises a short-circuit protection device, wherein the short-circuit protection device is arranged on the negative electrode connecting wire and used for performing short-circuit protection on the battery pack.
Optionally, a second on-off switch for controlling on-off of the charging wire is further arranged on the charging wire, and the second on-off switch is connected in series with the first on-off switch and is connected with the control unit.
Optionally, the battery pack further comprises a first thermistor, wherein the first thermistor is connected with the first chip unit and used for receiving the temperature signal and performing over-temperature protection on the battery pack when the temperature signal represents that the temperature of the battery pack exceeds a preset temperature threshold.
Optionally, the battery pack further comprises a second thermistor, and the first thermistor is connected with the control unit and performs over-temperature protection on the battery pack when receiving a temperature protection instruction sent by the control unit.
Optionally, the control unit includes a processing module and a monitoring module, and the monitoring module is connected to the control unit and configured to monitor a state of the processing module and wake up the processing module when the processing module stops operating.
Embodiments of the second aspect of the present application provide an electric power tool, including a tool main body and a battery pack for providing a power supply for the tool main body, the battery pack being the battery pack provided by the first aspect.
The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages:
the battery pack provided by the embodiment of the application comprises a battery pack, a detection unit and a control unit, wherein the control unit is respectively connected with the detection unit and the control unit connected with the external equipment, and can respectively acquire and store battery pack detection data detected by the detection unit and external state parameters of the external equipment so as to provide data support for after-sale service and subsequent continuous development of the battery pack; the working states of the battery pack and the external equipment can be determined according to the battery pack detection data and the external equipment state parameters, and the disconnection of a charging line or a negative electrode wire led out by the battery pack is controlled when the battery pack and/or the external equipment is abnormal.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings.
In the drawings:
fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present application;
fig. 2 shows another schematic structural diagram of a battery pack provided in an embodiment of the present application.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
A battery pack and an electric power tool according to an embodiment of the present application will be described below with reference to the accompanying drawings.
The embodiment of the application provides a battery pack, this battery pack can be connected with external equipment and discharges or charge, and correspondingly, this external equipment can be for using electrical apparatus or charger, should use electrical apparatus can but not be limited to for cordless handheld electric tool, like electric saw, electric drill, handheld polisher etc..
As shown in fig. 1, the battery pack may include at least one battery pack 10 and a protection circuit for protecting the battery pack 10, and the protection circuit may include a detection unit detecting the battery pack 10 and a control unit 30 controlling the battery pack 10. Wherein, positive pole wiring (B + in the figure), negative pole wiring (B-in the figure), charging wire (C +) in the figure and communication wire (COM in the figure) are respectively led out from two ends of the battery pack 10; a detection unit, which is respectively connected with the battery pack 10 and the charging wire, and is used for performing temperature detection and voltage detection on the battery pack 10, and disconnecting the charging wire when the battery pack 10 is fully charged or has abnormal temperature (the abnormal temperature can be higher or lower than a specified temperature, and is usually higher than a specified temperature according to actual conditions); the control unit 30 is respectively connected with the detection unit, the communication line and the negative electrode connecting wire, and is used for acquiring and storing the detection data of the battery pack 10 detected by the detection unit, communicating with the external equipment through the communication line, and acquiring and storing the external state parameters of the external equipment; determining the working state of the battery pack 10 according to the detection data of the battery pack 10, and determining the working state of the external equipment according to the external state parameters; and controls the negative connection wire or the charging wire to be disconnected when the working state of the battery pack 10 is abnormal and/or the working state of the external device is abnormal.
The battery pack provided by the embodiment comprises a battery pack 10, a detection unit and a control unit 30, wherein the control unit 30 is respectively connected with the detection unit and the control unit 30 of the external device, and can respectively acquire and store detection data of the battery pack 10 detected by the detection unit and external state parameters of the external device so as to provide data support for after-sale service and subsequent continuous development of the battery pack; the working states of the battery pack 10 and the external equipment can be determined according to the detection data of the battery pack 10 and the external equipment parameters respectively, and the disconnection of the charging line or the negative electrode wire led out from the battery pack 10 can be controlled when the battery pack 10 and/or the external equipment is abnormal.
The control unit 30 may include a data transmitting interface and a data receiving interface, and may convert a digital signal thereof into a network signal for network communication through the conversion circuit 31, or convert a network signal transmitted by an external device through a network into a digital signal that can be recognized by the external device, thereby implementing communication with the external device.
Specifically, the control unit 30 may include a processing module and a monitoring module 32, and the monitoring module 32 is connected to the control unit 30 for monitoring the state of the processing module and waking up the processing module when the processing module stops working, so as to prevent the control unit 30 from "sleeping" (temporarily stopping) for too long to affect the working of the protection circuit and fail to protect the battery pack 10 in time. Wherein processing module can be microprocessor, digital signal processor etc. and monitoring module 32 can be watchdog timer (commonly known as watchdog), and this embodiment does not do specific restriction to processing module and monitoring module 32's concrete structure and material, as long as can realize the processing function in the above-mentioned control unit can.
It should be noted that, besides the above structures (the battery pack 10, the monitoring unit, and the control unit 30), the battery pack may further include components such as the housing and the circuit connection line, where the housing is used to package and protect the above structures, and the circuit connection line is used to electrically connect the components.
In a specific embodiment of this embodiment, the detecting unit may include a first chip unit 21, and the charging line may be provided with a first on-off switch 41 for controlling on/off of the charging line. The first chip unit 21 may be connected to the battery pack 10, and configured to detect whether the battery pack 10 reaches a preset voltage threshold and a preset temperature threshold, and generate a temperature signal and a first voltage signal, respectively. The first chip unit 21 may be further connected to the first on-off switch 41, and controls on/off of the first on-off switch 41 by a first voltage signal. The first chip unit 21 is connected to the control unit 30 for sending the temperature signal and the first voltage signal to the control unit 30. The first on/off switch 41 may be connected to the control unit 30 at the same time, or may be turned off when receiving an off command from the control unit 30, so as to achieve double protection against overcharge.
The temperature signal may include a signal indicating that the temperature is normal and a signal indicating that the temperature exceeds a preset temperature threshold (which may be lower than the preset temperature threshold or higher than the preset temperature threshold according to a specific use environment). The first voltage signal typically includes a signal indicative of a voltage being normal and a signal indicative of a voltage exceeding (being greater than) a preset voltage threshold.
In this embodiment, by setting the first chip unit 21, threshold detection may be performed on the voltage and the temperature of the battery pack 10, so as to prevent the voltage and the temperature of the battery pack 10 from exceeding a voltage threshold and/or a temperature threshold, and the first on-off switch 41 may be controlled to be turned off by a first voltage signal indicating that the voltage exceeds the threshold, so as to turn off the charging line. The first chip unit 21 further sends the generated first voltage signal and the temperature signal to the control unit 30, so that the control unit 30 can also implement over-temperature or over-voltage protection on the battery pack 10 and the external device according to the first voltage signal and the temperature signal.
Further, the detection unit may further include a second chip unit 22, the second chip unit 22 may be connected to the battery pack 10 and the control unit 30, respectively, and configured to detect the voltage of the battery pack 10 in real time and generate and send a second voltage signal to the control unit 30, the second chip unit 22 may send the second voltage signal to the control unit 30, and the control unit 30 may record the second voltage signal in real time so as to provide data support for after-sales service and subsequent development. The control unit 30 may also adjust the input and output of the battery pack 10 according to the second voltage signal to better implement the charging and discharging process of the battery pack.
Further, as shown in fig. 2, a second on-off switch 42 for controlling on/off of a charging line may be further disposed on the charging line of the battery pack, and the second on-off switch 42 is connected in series with the first on-off switch 41 and is connected to the control unit 30, so that when the first chip unit 21 fails or the first on-off switch 41 fails, the control unit 30 controls the second on-off switch 42 to be turned off, and the charging line can be also turned off, thereby implementing dual protection on the battery pack 10.
In another specific implementation manner of this embodiment, the battery pack may further include a current sampling resistor 51, the current sampling resistor 51 may be disposed on the negative connection line and located at one end of the negative connection line close to the battery pack 10, the current sampling resistor 51 may further send the current passing through it to the control unit 30, and the control unit 30 may determine the current of the external electrical appliance according to the received current data, so as to disconnect the negative connection line when the current output by the battery pack 10 is abnormal, so as to perform overcurrent protection on the battery pack 10 and the external electrical appliance.
Specifically, the battery pack may further include a short-circuit protection device 52, the short-circuit protection device 52 may be disposed on the negative connection line, and when the current of the negative connection line is detected to be excessive, the short-circuit protection device 52 may be automatically turned off, so that the negative connection line is turned off to perform short-circuit protection on the battery pack 10. The short-circuit protection device 52 may be, but not limited to, a short-circuit fuse, as long as it can protect the circuit of the battery pack by itself being disconnected when the current is too large (short circuit), and may also be, for example, a fuse.
In another specific implementation manner of this embodiment, the battery pack may further include a first thermistor 61, where the first thermistor 61 is connected to the first chip unit 21, and is configured to receive the temperature signal and perform over-temperature protection on the battery pack 10 when the temperature signal indicates that the temperature of the battery pack 10 exceeds a preset temperature threshold.
Further, the battery pack may further include a second thermistor 62, and the second thermistor 62 is connected to the control unit 30 and performs over-temperature protection on the battery pack 10 when receiving a temperature protection instruction sent by the control unit 30.
Here, the first thermistor 61 and the second thermistor 62 may be an over-low temperature protection resistor and an over-high temperature protection resistor, respectively, to implement over-low temperature protection and over-high temperature protection of the battery pack 10, respectively. The first thermistor 61 and the second thermistor 62 can also be both over-temperature protection resistors or both over-temperature protection resistors, so as to control the activation of the thermistors through the first chip unit 21 and the control unit 30, respectively, to realize dual protection of the battery pack 10 against over-low temperature or over-high temperature. The resistance of the over-low Temperature protection may be, but not limited to, an NTC (Negative Temperature Coefficient) thermistor as long as the over-low Temperature protection function is achieved. The over-Temperature protection resistor may be, but not limited to, a PTC (Positive Temperature Coefficient) thermistor as long as the above-described over-Temperature protection function is achieved.
Based on the same idea of the battery pack, the present embodiment further provides an electric tool, which includes a tool body and a battery pack for providing power to the tool body, where the battery pack is the battery pack of any of the above embodiments, and the tool body may be, but is not limited to, the cordless handheld electric tool, such as an electric saw, an electric drill, a handheld sander, and the like.
It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A battery pack, comprising:
at least one battery pack, wherein a positive connection wire, a negative connection wire, a charging wire and a communication wire are respectively led out;
the detection unit is respectively connected with the battery pack and the charging wire, and is used for carrying out temperature detection and voltage detection on the battery pack and disconnecting the charging wire when the battery pack is fully charged or the temperature is abnormal;
the control unit is respectively connected with the detection unit, the communication line and the negative electrode connecting wire, and is used for acquiring and storing battery pack detection data detected by the detection unit, communicating with external equipment through the communication line, and acquiring and storing external state parameters of the external equipment; determining the working state of the battery pack according to the battery pack detection data, and determining the working state of the external equipment according to the external state parameters; and controlling the negative electrode connection wire or the charging wire to be disconnected when the working state of the battery pack is abnormal and/or the working state of the external equipment is abnormal.
2. The battery pack according to claim 1, wherein the detection unit comprises a first chip unit, a first on-off switch for controlling on/off of the charging wire is arranged on the charging wire, and the first on-off switch is respectively connected with the first chip unit and the control unit;
the first chip unit is connected with the battery pack and used for detecting whether the battery pack reaches a preset voltage threshold and a preset temperature threshold, respectively generating a temperature signal and a first voltage signal, and controlling the on-off of the first on-off switch through the first voltage signal;
the first chip unit is connected with the control unit and used for sending the temperature signal and the first voltage signal to the control unit.
3. The battery pack according to claim 2, wherein the detection unit further comprises a second chip unit, and the second chip unit is respectively connected to the battery pack and the control unit, and is configured to detect the voltage of the battery pack in real time, generate and send a second voltage signal to the control unit.
4. The battery pack of claim 1, further comprising a current sampling resistor disposed on the negative terminal at an end of the negative terminal proximate to the battery pack.
5. The battery pack according to claim 1, further comprising a short-circuit protection device provided on the negative electrode tab to short-circuit protect the battery pack.
6. The battery pack according to claim 2, wherein the charging line is further provided with a second on-off switch for controlling on/off of the charging line, and the second on-off switch is connected in series with the first on-off switch and is connected with the control unit.
7. The battery pack of claim 2, further comprising a first thermistor, wherein the first thermistor is connected to the first chip unit and configured to receive the temperature signal and perform over-temperature protection on the battery pack when the temperature signal indicates that the temperature of the battery pack exceeds a preset temperature threshold.
8. The battery pack according to claim 3, further comprising a second thermistor, wherein the first thermistor is connected to the control unit and performs over-temperature protection on the battery pack upon receiving a temperature protection instruction sent by the control unit.
9. The battery pack of claim 1, wherein the control unit comprises a processing module and a monitoring module, and the monitoring module is connected to the control unit and configured to monitor a status of the processing module and wake up the processing module when the processing module stops operating.
10. A power tool comprising a tool body and a battery pack for supplying power to the tool body, wherein the battery pack is the battery pack according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120802328.0U CN215660083U (en) | 2021-04-19 | 2021-04-19 | Battery pack and electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120802328.0U CN215660083U (en) | 2021-04-19 | 2021-04-19 | Battery pack and electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215660083U true CN215660083U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120802328.0U Active CN215660083U (en) | 2021-04-19 | 2021-04-19 | Battery pack and electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215660083U (en) |
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2021
- 2021-04-19 CN CN202120802328.0U patent/CN215660083U/en active Active
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