CN219999044U

CN219999044U - Electric tool lithium battery pack with anti-lost function

Info

Publication number: CN219999044U
Application number: CN202123396126.XU
Authority: CN
Inventors: 王家明; 赵龙; 张漫玉
Original assignee: Nanjing Chuanggan Technology Co ltd
Current assignee: Nanjing Chuanggan Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2023-11-10
Anticipated expiration: 2031-12-30

Abstract

The utility model provides an electric tool lithium cell package of anti-lost function in area, including setting up singlechip and its control circuit on the control panel, bluetooth circuit, buzzer sounding circuit, lamp shows circuit and MOS accuse temperature sampling circuit, the singlechip passes through MOS control turn-off circuit and charge-discharge circuit control connection power, the singlechip passes through differential amplification circuit and MOS accuse temperature sampling circuit links to each other, charge-discharge circuit passes through step-down circuit and connects bluetooth circuit, bluetooth circuit connects the communication end of singlechip, and with cell-phone bluetooth terminal APP communication data connection, buzzer sounding circuit and lamp show circuit are connected respectively to the control end of singlechip. Through the mode that cell-phone bluetooth and lithium cell package bluetooth are connected, let the lithium cell package make sound under the control of cell-phone software, the user can seek this battery package or be equipped with the instrument of this battery package fast.

Description

Electric tool lithium battery pack with anti-lost function

Technical Field

The utility model belongs to the technical field of lithium batteries, and particularly relates to an electric tool lithium battery pack with an anti-lost function.

Background

The lithium battery pack commonly used in the market at present has no other auxiliary functions except the basic charge and discharge functions, has single function, is multiple in matching types, and has different interface types. When the battery pack and the electric tool are not matched products, but the metal terminals of the electric tool can be connected into the battery pack, the anode and the cathode of some battery packs are different, the battery packs which are not corresponding are directly connected under the condition of carelessness, the battery packs can be possibly reversely connected with the anode and the cathode of the plate of the electric tool, double short circuits are possibly caused between the control plate of the electric tool and the control plate of the battery packs when the battery packs are serious, and even if the reverse connection preventing design is added in a circuit, the circuit is possibly damaged due to multiple improper operations. When having more types of battery package, it is difficult to go to one-to-one to confirm the correspondence in accomodating the management, generally all is that the user makes the mark or remembers the nameplate information of battery package, but not all battery packages can all have structural nameplate information design, rely on battery package itself to match electric tool comparatively singlely, and reliability security is not high to very easily forget this state when battery package charges, leads to the battery package to lose, causes certain loss of property.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the lithium battery pack of the electric tool with the anti-lost function, wherein the lithium battery pack can emit sound under the control of mobile phone software by adopting a Bluetooth connection mode, so that a user can quickly find the battery pack or a tool provided with the battery pack.

The utility model provides an electric tool lithium battery pack with an anti-lost function, which comprises a singlechip and a control circuit, a Bluetooth circuit, a buzzer sounding circuit, a lamp display circuit and an MOS temperature control sampling circuit, wherein the singlechip is arranged on a control board, the singlechip is connected with a power supply through an MOS control turn-off circuit and a charging and discharging circuit, the singlechip is connected with the MOS temperature control sampling circuit through a differential amplifying circuit, the charging and discharging circuit is connected with the Bluetooth circuit through a voltage reducing circuit, the Bluetooth circuit is connected with a communication end of the singlechip and is in communication data connection with a mobile phone Bluetooth terminal APP, and the control end of the singlechip is respectively connected with the buzzer sounding circuit and the lamp display circuit.

As a further technical scheme of the utility model, the singlechip is FU6832S, 5V output is built in the singlechip, the FU6832S is connected with the B+/P-end of the charge-discharge circuit, the charge-discharge chip of the charge-discharge circuit is CW1035, the FU6832S is connected with the MOS temperature control sampling circuit through the differential amplifying circuit, the resistance signal sampled by the MOS temperature control sampling circuit is converted into a current signal, and the voltage detection end of the FU6832S is connected with each lithium battery cell.

Further, the chip of the voltage reduction circuit is AM1117-3.3V, the input end of the AM1117-3.3V is connected with the +5V output end of VDD5 of FU6832S, and the output end of the voltage reduction circuit is connected with the Bluetooth circuit.

Further, the chip of the Bluetooth circuit is HC-42, the HC-42 adopts a data transmission mode based on Bluetooth Specification V5.0.0 BLE Bluetooth protocol, the wireless working frequency band is 2.4GHz ISM, the modulation mode is GFSK, the RXD port of the HC-42 is connected with the TXD end of the Bluetooth driving power supply module, and the TXD port of the HC-42 is connected with the RXD end of the Bluetooth driving power supply module.

Further, the IO port of the buzzer sounding circuit is connected with the control end of the singlechip, the lamp display circuit is an LED signal display circuit, and the LED signal display circuit is connected with the control end of the singlechip.

Further, a Bluetooth driving power supply module is further arranged on the control board, four pins of the chip of the Bluetooth circuit are connected with the Bluetooth driving power supply module in a needle-line mode, TXD of the Bluetooth driving power supply module is connected with RXD of the chip of the Bluetooth circuit, RXD is connected with TXD of the chip of the Bluetooth circuit, VCC of the chip of the Bluetooth circuit is connected to 3.3V voltage on the control board, and GND of the chip of the Bluetooth circuit is connected with a ground wire; the charging and discharging circuit on the control board comprises four ports, namely a charging and discharging end cathode, a charging end anode, a discharging end cathode and a communication port.

The present utility model has the advantage that,

1. the user can judge the position and the state of the battery pack connected at present well according to the connection prompt tone and the disconnection prompt tone, so as to prevent the user from forgetting subjectively.

2. The Bluetooth matching function is detected in the power-on mode, the battery pack is prevented from being burnt out due to misplug of the model, and loss is avoided.

3. The user uses the mobile phone Bluetooth to connect the battery pack, can singly connect also can connect with a plurality of battery packs, confirms the manageability that the battery pack connects.

Drawings

FIG. 1 is a schematic block diagram of the structure of the present utility model;

FIG. 2 is a diagram of a single chip microcomputer and a control circuit thereof according to the present utility model;

FIG. 3 is a charge-discharge circuit diagram of the present utility model;

fig. 4 is a circuit diagram of a bluetooth according to the present utility model;

fig. 5 is a diagram of a buzzer driving circuit according to the present utility model;

FIG. 6 is a circuit diagram of a lamp display signal according to the present utility model;

fig. 7 is a schematic diagram of a control board of the present utility model.

Detailed Description

Referring to fig. 1, the embodiment provides a lithium battery pack with an anti-lost function for an electric tool, wherein a single chip microcomputer and a control circuit thereof, a bluetooth circuit, a buzzer sounding circuit, a lamp display circuit and a MOS temperature control sampling circuit are arranged on a control board, the single chip microcomputer is connected with a power supply through a MOS control turn-off circuit and a charging and discharging circuit control, the single chip microcomputer is connected with the MOS temperature control sampling circuit through a differential amplifying circuit, the charging and discharging circuit is connected with the bluetooth circuit through a voltage reducing circuit, the bluetooth circuit is connected with a communication end of the single chip microcomputer and is in communication data connection with a mobile phone bluetooth terminal APP, and the control end of the single chip microcomputer is respectively connected with the buzzer sounding circuit and the lamp display circuit.

The MOS tube is controlled by the singlechip FU6832S to switch on and off, the main control circuit is shown in figure 2, the charge-discharge chip CW1035 is used for carrying out basic management of circuit power supply, the singlechip chip is used for converting sampled sampling resistance signals into current signals through the differential amplifying circuit, the FU6832S main control chip is used for detecting the voltages of all lithium battery cells, when a certain power cell is overcharged or overdischarged, the FU6832S main control chip can cut off charge-discharge MOS loops, the LDO voltage transformation circuit is controlled to operate only by partial node circuits, the AM1117-3.3V chip is output by +5V connected with VDD5 of the singlechip of the FU6832S, the 3.3V output voltage of the AM1117-3.3V chip is used for supplying power to the Bluetooth circuit, the FU6832S singlechip is internally provided with 5V output, no external 5V voltage transformation is needed, the external 5V voltage transformation is directly connected to the B+/P-end of the charge-discharge end, the HC-42 Bluetooth part adopts a data transmission mode based on the Bluetooth Specification V.0 BLE Bluetooth protocol, the wireless working frequency band is 2.4GHz ISM, the modulation mode is GFSK, and the data is automatically transmitted into the air in a radio wave mode after the RXD port of the Bluetooth chip HC-42 on the control board receives serial data, as shown in fig. 3. The Bluetooth in the mobile phone receives the data signal, and restores serial data sent by the original left device from the TXD, and transmits the data from the mobile phone to the control panel, the mobile phone APP android system uses BLE An Zhuochuan port assistant, and the apple system uses Lightblue Bluetooth assistant or other software supporting BLE Bluetooth serial port, so that the mobile phone APP android system can communicate with the HC-42, as shown in fig. 4.

The BLE serial port assistant is equivalent to an external 'input button', can display current information, controls a design function through the singlechip FU6832S, firstly detects that a battery pack for communication is not a set model with an electric tool after power-on, bluetooth control sends 'unsuccessful matching' to the mobile phone BLE serial port assistant through a data transmission mode, and when receiving mismatch signal feedback, the singlechip FU6832S controls the IO of the buzzer to receive a low-level signal and directly controls the buzzer circuit to send whistle sounds; meanwhile, the mobile phone APP Bluetooth data is designed for external input control, when a battery pack of a certain model is required to be found, the model is directly clicked and data connection is carried out, HC-42 Bluetooth on a battery pack model control board of the type name receives an instruction and feeds back the instruction to the singlechip FU6832S, the singlechip receives the instruction and then carries out signal processing, and after the connection is successful, the buzzer is controlled to sound simultaneously, as shown in fig. 5, a buzzer driving circuit is shown, and the singlechip controls a connection signal lamp at the first time when receiving a connection success signal, as shown in fig. 6, a lamp display signal circuit part is shown, so that a user can be helped to quickly position the battery pack, a certain connection maximum threshold is set, when the user controls the battery pack to reach a dangerous threshold, the opportunity on the battery pack control board feeds back a signal to a mobile phone BLE serial port auxiliary, and at the moment, the connection signal lamp is turned off, three sounds of the buzzer are short, the user is prompted, the distance between the battery pack and the mobile phone control is far, and the battery pack is prevented from being forgotten to be received due to personal reasons or in a charging state during use, and the battery pack is prevented from being lost; in a BLE serial port assistant for data transmission of a Bluetooth circuit on a mobile phone, instruction butt joint is performed, the basic state of a current battery pack, such as the residual quantity of the current electric quantity, the rated voltage/current value and the current operation fault state, such as voltage/current abnormality (over low, over high and the like), circuit overtemperature and the like, can be displayed, which is equivalent to a display, a user can clearly see the operation state of the current battery pack, and related lamps in a lamp display circuit on a battery pack board can flash and display simultaneously, and multiple judgment and combined action are performed.

In this embodiment, after the positive and negative poles of the five strings of batteries are connected in series, the positive and negative poles of the five strings of batteries are respectively connected with the B+/B1/B2/B3/B4/B-corresponding to each other on the board, the charge and discharge ports of the battery pack are normally connected with equipment in charging, the discharge ports are connected with electric equipment which needs to be externally connected, a buzzer circuit is in acoustic display of fault abnormality alarm by the main control of the singlechip FU6832S, the buzzer carries out sound display to remind a user that the current battery pack is abnormal, four pins of the HC-42 Bluetooth part are connected with a Bluetooth power supply driving circuit of the board in a needle-line mode, TXD on the board is respectively connected with RXD of the Bluetooth module, RXD on the board is connected with TXD of the HC-42 Bluetooth part, VCC is connected with 3.3V voltage on the board, GND is connected with the ground on the board, a user can see specific fault information through Bluetooth APP display of the mobile phone, bluetooth communication is generally used, the battery pack is prevented from being lost in a certain range, too many battery packs can not be found in time, the required battery pack can be directly connected through Bluetooth short distance control of the mobile phone Bluetooth, the mobile phone can be directly connected with the mobile phone Bluetooth, the following battery pack model number can be directly, the battery pack can be transmitted through the singlechip 6832, and the following number can be basically seen through the singlechip 6832.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the specific embodiments described above, and that the above specific embodiments and descriptions are provided for further illustration of the principles of the present utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the claims and their equivalents.

Claims

1. The utility model provides a take electric tool lithium cell package of anti-lost function, its characterized in that, including setting up singlechip and its control circuit, bluetooth circuit, buzzer sounding circuit, lamp display circuit and MOS accuse temperature sampling circuit on the control panel, the singlechip passes through MOS control turn-off circuit and charge-discharge circuit control connection power, the singlechip pass through differential amplifier circuit with MOS accuse temperature sampling circuit links to each other, charge-discharge circuit passes through step-down circuit connection bluetooth circuit, bluetooth circuit connection the communication end of singlechip to with cell-phone bluetooth terminal APP communication data connection, the control end of singlechip is connected respectively buzzer sounding circuit with lamp display circuit.

2. The lithium battery pack with the anti-lost function for the electric tool according to claim 1, wherein the single chip microcomputer is FU6832S, 5V output is built in the single chip microcomputer, the FU6832S is connected with the b+/P-end of the charging and discharging circuit, the charging and discharging chip of the charging and discharging circuit is CW1035, the FU6832S is connected with the MOS temperature-control sampling circuit through the differential amplifying circuit, resistance signals sampled by the MOS temperature-control sampling circuit are converted into current signals, and the voltage detection end of the FU6832S is connected with each lithium battery cell.

3. The lithium battery pack with the anti-lost function for the electric tool according to claim 1, wherein the chip of the voltage reduction circuit is AM1117-3.3V, the input end of the AM1117-3.3V is connected with the +5V output end of VDD5 of FU6832S, and the output end of the AM1117-3.3V is connected with the Bluetooth circuit.

4. The lithium battery pack with the anti-lost function for the electric tool according to claim 1, wherein a chip of the Bluetooth circuit is HC-42, the HC-42 adopts a data transmission mode based on Bluetooth Specification V5.0.0 BLE Bluetooth protocol, a wireless working frequency band is 2.4GHz ISM, a modulation mode is GFSK, a RXD port of the HC-42 is connected with a TXD end of a Bluetooth driving power supply module, and a TXD port of the HC-42 is connected with the RXD end of the Bluetooth driving power supply module.

5. The lithium battery pack with the anti-lost function for the electric tool according to claim 1, wherein an IO port of a buzzer of the buzzer sounding circuit is connected with a control end of the singlechip, the light display circuit is an LED signal display circuit, and the LED signal display circuit is connected with the control end of the singlechip.

6. The lithium battery pack with the anti-lost function for the electric tool according to claim 1, wherein the control board is further provided with a Bluetooth driving power supply module, four pins of a chip of the Bluetooth circuit are connected with the Bluetooth driving power supply module in a needle-line mode, TXD of the Bluetooth driving power supply module is connected with RXD of the chip of the Bluetooth circuit, RXD is connected with TXD of the chip of the Bluetooth circuit, VCC of the chip of the Bluetooth circuit is connected to 3.3V voltage on the control board, and GND of the chip of the Bluetooth circuit is connected with a ground wire; the charging and discharging circuit on the control board comprises four ports, namely a charging and discharging end cathode, a charging end anode, a discharging end cathode and a communication port.