Data communication transmission method of battery pack and battery pack

Abstract

The present invention discloses a data communication transmission method of a battery pack and a battery pack, the method comprising: the battery pack sends configuration information to an electric tool or a charger through a first port; the battery pack receives electrical parameter information sent by the electric tool or the charger through the first port. The present invention can not only realize the multiplexing of the data transceiver function of a single port of the battery pack, which is conducive to the expansion of the port function, but also simplifies the control and can prevent the existing battery pack from falling off due to the need to press the locking mechanism to wake up.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a data communication transmission method for a battery pack and a battery pack, which are applicable to electronic equipment such as electric tools. Background Art

[0002] Power tools (such as lithium battery tools) have been introduced in the market for many years, and there are a large number of battery packs and tools on the market.

[0003] With the transformation of the Internet to the Internet of Things (IOT), power tools may also be connected to the Internet. For example, users hope to remotely obtain the power of the battery pack through a mobile phone APP, set the speed, torque and other parameters of the power tool through the mobile phone APP, display the operating parameters of the power tool through the mobile phone APP, and obtain the battery charging status of the battery pack through the mobile phone APP when the battery pack is charging, etc.

[0004] In order to enable electric tools to be connected to the Internet, the battery pack, electric tools or chargers need to have communication functions, but the battery packs, electric tools or chargers in the prior art are not equipped with communication functions that adapt to IOT. The wired communication in the prior art requires sending and receiving two signals, that is, in order to enable the battery pack in the prior art to have communication functions, it is necessary to add two ports to the battery pack in the prior art. If two ports are added to the battery pack in the prior art, it is bound to increase the volume of the battery pack, increase the number of ports, and cannot be adapted to the electric tools or chargers in the prior art.

[0005] In order to solve the above problems, the prior art has adopted a method of port multiplexing to multiplex the data receiving function or the data sending function on the original port of the battery pack. However, the existing port multiplexing only multiplexes the data receiving function or the data sending function on one port alone, and cannot multiplex the data receiving function and the data sending and receiving function at the same time, which limits the expansion of the port function; in addition, the existing port multiplexing requires the use of a switching signal to switch the multiplexing function, which increases the complexity of the control; and the triggering and waking up of the existing battery pack mostly adopts a trigger button set under its locking mechanism, and the trigger button is driven by pressing the locking mechanism to provide a trigger signal to the wake-up circuit in the battery pack, thereby waking up the battery pack for power supply. Since this solution is implemented by pressing the locking mechanism, there is a safety hazard that the battery pack will fall off the power tool or charger during the process of pressing the locking mechanism. Summary of the invention

[0006] The object of the present invention is to provide a data communication transmission method for a battery pack and a battery pack, which can not only realize the multiplexing of the data receiving and sending functions of a single port of the battery pack, which is beneficial to the expansion of the port function, but also simplifies the control and prevents the battery pack from falling off due to the need to press the locking mechanism to wake up the existing battery pack.

[0007] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a data communication transmission method of a battery pack, wherein the battery pack is electrically connected to an electric tool or a charger through four ports, wherein the four ports include a first port, a second port, a positive terminal and a negative terminal, wherein the first port has a data transmission function, a data reception function and a function of outputting a first state signal, and the second port has a state activation function and a function of outputting a second state signal, wherein the first state signal includes a battery pack ID, and the second state signal includes a battery pack temperature or a state signal of a single battery in the battery pack; the method includes:

[0008] The battery pack sends configuration information to the power tool or charger via the first port;

[0009] The battery pack receives electrical parameter information sent by the electric tool or the charger through the first port.

[0010] In the above technical solution, the method further comprises:

[0011] The battery pack upgrades the program in the electric tool or the charger through the data sending function and the data receiving function of the first port.

[0012] In the above technical solution, the battery pack further includes: a wireless communication module;

[0013] The method further comprises:

[0014] The battery pack sends the electrical parameter information of the electric tool or charger to the terminal device through the wireless communication module.

[0015] In the above technical solution, the wireless communication module is a Bluetooth module and / or a WIFI module.

[0016] In the above technical solution, the battery pack further includes a wake-up module, and the electric tool or charger used in conjunction with the battery pack further includes a trigger module;

[0017] The method further comprises:

[0018] The battery pack receives a trigger signal sent by the electric tool or the charger through the second port to wake up the battery pack.

[0019] The present invention also provides a battery pack, the battery pack comprising four ports for electrically connecting to an electric tool or a charger, the four ports comprising a first port, a second port, a positive terminal and a negative terminal;

[0020] The first port has a data transmission function, a data reception function and a function of outputting a first state signal, and the second port has a state activation function and a function of outputting a second state signal, the first state signal includes a battery pack ID, and the second state signal includes a battery pack temperature or a state signal of a single battery in the battery pack;

[0021] The battery pack sends configuration information to the power tool or charger via the first port;

[0022] The battery pack receives electrical parameter information sent by the electric tool or the charger through the first port.

[0023] In the above technical solution, the battery pack includes a first control module, a power supply module, a single battery detection module, and a first data sending circuit, a first data receiving circuit, and a first state signal sampling circuit integrated on a first port, and a wake-up module and a second state signal sampling circuit integrated on a second port;

[0024] The electric tool or charger electrically connected to the battery pack includes a second control module, a second data sending circuit, a second data receiving circuit, a first status signal receiving circuit integrated on the first port, and a trigger module and a second status signal receiving circuit integrated on the second port.

[0025] In the above technical solution, the first data sending circuit includes a first resistor and a first transistor, one end of the first resistor is electrically connected to the data sending end of the first control module, the other end of the first resistor is electrically connected to the base of the first transistor, the collector of the first transistor is electrically connected to the first port, and the emitter of the first transistor is grounded;

[0026] The first data receiving circuit comprises a second resistor, a third resistor, a fourth resistor and a second transistor, one end of the second resistor is electrically connected to the data receiving end of the first control module, the other end of the second resistor is electrically connected to one end of the third resistor and the collector of the second transistor respectively, the other end of the third resistor is electrically connected to the first power supply, the emitter of the second transistor is grounded, the base of the second transistor is electrically connected to one end of the fourth resistor, and the other end of the fourth resistor is electrically connected to the first port;

[0027] The first state signal sampling circuit includes a fifth resistor and a voltage regulator tube, one end of the fifth resistor and the negative electrode of the voltage regulator tube are both electrically connected to the first port, and the other end of the fifth resistor and the positive electrode of the voltage regulator tube are both grounded;

[0028] The wake-up module includes a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first MOS transistor, a third transistor and a capacitor, one end of the sixth resistor is electrically connected to the drain of the first MOS transistor, the other end of the sixth resistor is electrically connected to the control signal input end of the power supply module, the control signal input end of the first control module and one end of the seventh resistor, the other end of the seventh resistor is grounded, the source of the first MOS transistor is electrically connected to the power output end of the power supply module and one end of the eighth resistor, the gate of the first MOS transistor is electrically connected to the other end of the eighth resistor and the collector of the third transistor, the emitter of the third transistor is grounded, the base of the third transistor is electrically connected to one end of the ninth resistor, the other end of the ninth resistor is electrically connected to one end of the capacitor, and the other end of the capacitor is electrically connected to the second port;

[0029] The second state signal sampling circuit includes a tenth resistor, a second MOS tube and a thermistor, the tenth resistor is electrically connected to the state signal sending end of the single battery of the first control module, the other end of the tenth resistor is electrically connected to the gate of the second MOS tube, the source of the second MOS tube is grounded, the drain of the second MOS tube is electrically connected to one end of the thermistor, and the other end of the thermistor is electrically connected to the second port.

[0030] In the above technical solution, the second data sending circuit includes an eleventh resistor and a fourth transistor, one end of the eleventh resistor is electrically connected to the data sending end of the second control module, the other end of the eleventh resistor is electrically connected to the base of the fourth transistor, the collector of the fourth transistor is electrically connected to the first port, and the emitter of the fourth transistor is grounded;

[0031] The second data receiving circuit comprises a twelfth resistor, a thirteenth resistor and a fifth transistor, one end of the twelfth resistor is electrically connected to the second power supply, the other end of the twelfth resistor is electrically connected to the collector of the fifth transistor and the data receiving end of the second control module, the emitter of the fifth transistor is grounded, the base of the fifth transistor is electrically connected to one end of the thirteenth resistor, and the other end of the thirteenth resistor is electrically connected to the first port;

[0032] The first state signal receiving circuit comprises a fourteenth resistor, one end of the fourteenth resistor is electrically connected to the second power supply, and the other end of the fourteenth resistor is electrically connected to the first port;

[0033] The trigger module includes a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a third MOS transistor and a sixth transistor, one end of the fifteenth resistor is electrically connected to the third power supply and the source of the third MOS transistor respectively, the other end of the fifteenth resistor is electrically connected to the gate of the third MOS transistor and the collector of the sixth transistor respectively, the drain of the third MOS transistor is electrically connected to one end of the sixteenth resistor, the other end of the sixteenth resistor is electrically connected to the second port, the emitter of the sixth transistor is grounded, the base of the sixth transistor is electrically connected to one end of the seventeenth resistor, and the other end of the seventeenth resistor is electrically connected to the control signal output end of the second control module;

[0034] The second state signal receiving circuit comprises an eighteenth resistor, one end of the eighteenth resistor is electrically connected to the state signal receiving end of the single battery of the second control block, and the other end of the eighteenth resistor is electrically connected to the second port.

[0035] In the above technical solution, the battery pack also includes a wireless communication module for sending electrical parameter information of the power tool or charger to the terminal device.

[0036] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0037] 1. The present invention multiplexes the data sending function and the data receiving function at the BS port of the battery pack. When the battery pack is connected to the electric tool or charger, the electric tool or charger can not only determine the state of the battery pack according to the state signal on the BS port or the TV port, but also perform data communication with the battery pack through the multiplexed BS port. While ensuring that the size of the battery pack remains unchanged, a battery pack with communication function is realized, solving the problem of incompatibility between the battery pack and the electric tools or chargers available on the market in the prior art, and bringing convenience to users.

[0038] 2. Since the present invention reuses both the data sending function and the data receiving function on the BS port, the data sending and receiving functions can be realized only through the BS port, thereby facilitating the expansion of the functions of the TV port. On this basis, the wake-up function is reused on the TV port to realize low-power wake-up of the battery pack. Compared with the prior art method of realizing battery pack wake-up by pressing the locking mechanism of the battery pack to drive the trigger button, the present invention can effectively prevent the battery pack from falling off due to the need to press the locking mechanism to wake up the battery pack, while ensuring the battery pack wake-up and sleep functions, reducing its power consumption and extending its service life;

[0039] 3. The present invention realizes the multiplexing of the data transmission and data reception functions of the BS port through hardware, thus simplifying the control;

[0040] 4. The first to third power supplies of the present invention can all use 3.3V power supplies, thereby further reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the connection between the battery pack and the port of the electric tool or charger according to the first embodiment of the present invention.

[0042] Figure 2 It is a schematic diagram of the internal circuit structure of the battery pack of the first embodiment of the present invention connected to the port of the electric tool or charger.

[0043] Among them: 1. battery pack; 11. first control module; 12. power supply module; 13. single battery detection module; 14. wireless communication module; 2. electric tool or charger; 21. second control module. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0045] Embodiment 1:

[0046] See also Figure 1 As shown, the present invention provides a data communication transmission method for a battery pack, wherein the battery pack 1 is electrically connected to an electric tool or a charger 2 through four ports, wherein the four ports include a first port BS / RX / TX, a second port TV, a positive terminal B+, and a negative terminal B-, wherein the first port BS / RX / TX has a data transmission function, a data reception function, and a function of outputting a first state signal, and the second port TV has a state activation function and a function of outputting a second state signal, wherein the first state signal includes a battery pack ID, and the second state signal includes a battery pack temperature or a state signal of a single battery in the battery pack; the method includes:

[0047] The battery pack 1 sends configuration information to the power tool or charger 2 via the first port BS / RX / TX;

[0048] The battery pack 1 receives the electrical parameter information sent by the electric tool or the charger 2 through the first port BS / RX / TX.

[0049] In this embodiment, the method further includes: the battery pack 1 upgrades the program in the electric tool or charger 2 through the data sending function and the data receiving function of the first port BS / RX / TX.

[0050] In this embodiment, the battery pack 1 further includes: a wireless communication module;

[0051] The method further includes: the battery pack 1 sends the electrical parameter information of the electric tool or the charger 2 to the terminal device via the wireless communication module.

[0052] Specifically, the wireless communication module is a Bluetooth module and / or a WIFI module.

[0053] In this embodiment, the battery pack 1 further includes a wake-up module, and the electric tool or charger 2 used in conjunction with the battery pack 1 further includes a trigger module;

[0054] The method further includes: the battery pack 1 receives a trigger signal sent by the electric tool or the charger 2 through the second port TV to wake up the battery pack 1 .

[0055] See also Figure 1 As shown, the present invention also provides a battery pack 1, the battery pack comprising four ports for electrically connecting to an electric tool or a charger 2, the four ports comprising a first port BS / RX / TX, a second port TV, a positive terminal B+ and a negative terminal B-;

[0056] The first port BS / RX / TX has a data transmission function, a data reception function and a function of outputting a first state signal, the second port TV has a state activation function and a function of outputting a second state signal, the first state signal includes a battery pack ID, and the second state signal includes a battery pack temperature or a state signal of a single battery in the battery pack;

[0057] The battery pack 1 sends configuration information to the power tool or charger 2 via the first port BS / RX / TX;

[0058] The battery pack 1 receives the electrical parameter information sent by the electric tool or the charger 2 through the first port BS / RX / TX.

[0059] Specifically, to achieve the above functions, the power tool or charger 2 connected to the battery pack 1 also needs to be equipped with four ports, namely, the first port, the second port, the positive terminal and the negative terminal corresponding to the battery pack 1; wherein, the first port BS / RX / TX of the battery pack 1 is connected to the first port of the power tool or charger 2, the second port TV of the battery pack 1 is connected to the second port of the power tool or charger 2, the positive terminal B+ of the battery pack 1 is connected to the positive terminal of the power tool or charger 2, and the negative terminal B- of the battery pack 1 is connected to the negative terminal of the power tool or charger 2.

[0060] See also Figure 2 As shown, the battery pack 1 includes a first control module 11, a power supply module 12, a single battery detection module 13, and a first data sending circuit, a first data receiving circuit, a first state signal sampling circuit integrated on the first port BS / RX / TX and a wake-up module and a second state signal sampling circuit integrated on the second port TV;

[0061] The electric tool or charger 2 electrically connected to the battery pack 1 includes a second control module 21, a second data sending circuit, a second data receiving circuit, a first status signal receiving circuit integrated on the first port, and a trigger module and a second status signal receiving circuit integrated on the second port.

[0062] The circuit in the battery pack is specifically as follows: the first data sending circuit includes a first resistor R1 and a first transistor Q1, one end of the first resistor R1 is electrically connected to the data sending terminal TX1 of the first control module 11, the other end of the first resistor R1 is electrically connected to the base of the first transistor Q1, the collector of the first transistor Q1 is electrically connected to the first port BS / RX / TX, and the emitter of the first transistor Q1 is grounded;

[0063] The first data receiving circuit includes a second resistor R2, a third resistor R3, a fourth resistor R4 and a second transistor Q2, one end of the second resistor R2 is electrically connected to the data receiving terminal RX1 of the first control module 11, the other end of the second resistor R2 is electrically connected to one end of the third resistor R3 and the collector of the second transistor Q2, the other end of the third resistor R3 is electrically connected to the first power supply VCC1, the emitter of the second transistor Q2 is grounded, the base of the second transistor Q2 is electrically connected to one end of the fourth resistor R4, and the other end of the fourth resistor R4 is electrically connected to the first port BS / RX / TX;

[0064] The first state signal sampling circuit includes a fifth resistor R5 and a voltage regulator ZD, one end of the fifth resistor R5 and the cathode of the voltage regulator ZD are electrically connected to the first port BS / RX / TX, the other end of the fifth resistor R5 and the anode of the voltage regulator ZD are grounded, wherein the fifth resistor R5 is an ID resistor;

[0065] The wake-up module includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a first MOS transistor Q3, a third transistor Q4 and a capacitor C, one end of the sixth resistor R6 is electrically connected to the drain of the first MOS transistor Q3, the other end of the sixth resistor R6 is electrically connected to the control signal input end of the power supply module 12, the control signal input end of the first control module 11 and one end of the seventh resistor R7, the other end of the seventh resistor R7 is grounded, the source of the first MOS transistor Q3 is electrically connected to the power output end of the power supply module 12 and one end of the eighth resistor R8, the gate of the first MOS transistor Q3 is electrically connected to the other end of the eighth resistor R8 and the collector of the third transistor Q4, the emitter of the third transistor Q4 is grounded, the base of the third transistor Q4 is electrically connected to one end of the ninth resistor R9, the other end of the ninth resistor R9 is electrically connected to one end of the capacitor C, and the other end of the capacitor C is electrically connected to the second port TV;

[0066] The second state signal sampling circuit includes a tenth resistor R10, a second MOS transistor Q5 and a thermistor NTC, the tenth resistor R10 is electrically connected to the state signal sending end of the single battery of the first control module 11, the other end of the tenth resistor R10 is electrically connected to the gate of the second MOS transistor Q5, the source of the second MOS transistor Q5 is grounded, the drain of the second MOS transistor Q5 is electrically connected to one end of the thermistor NTC, and the other end of the thermistor NTC is electrically connected to the second port TV.

[0067] The circuit in the electric tool or charger is specifically that the second data sending circuit includes an eleventh resistor R11 and a fourth transistor Q6, one end of the eleventh resistor R11 is electrically connected to the data sending terminal TX2 of the second control module 21, the other end of the eleventh resistor R11 is electrically connected to the base of the fourth transistor Q6, the collector of the fourth transistor Q6 is electrically connected to the first port, and the emitter of the fourth transistor Q6 is grounded;

[0068] The second data receiving circuit includes a twelfth resistor R12, a thirteenth resistor R13 and a fifth transistor Q7, one end of the twelfth resistor R12 is electrically connected to the second power supply VCC2, the other end of the twelfth resistor R12 is electrically connected to the collector of the fifth transistor Q7 and the data receiving end RX2 of the second control module 21, the emitter of the fifth transistor Q7 is grounded, the base of the fifth transistor Q7 is electrically connected to one end of the thirteenth resistor R13, and the other end of the thirteenth resistor R13 is electrically connected to the first port;

[0069] The first state signal receiving circuit comprises a fourteenth resistor R14, one end of the fourteenth resistor R14 is electrically connected to the second power supply VCC2, and the other end of the fourteenth resistor R14 is electrically connected to the first port;

[0070] The trigger module includes a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, a third MOS transistor Q8 and a sixth transistor Q9, one end of the fifteenth resistor R15 is electrically connected to the third power supply VCC3 and the source of the third MOS transistor Q8, the other end of the fifteenth resistor R15 is electrically connected to the gate of the third MOS transistor Q8 and the collector of the sixth transistor Q9, the drain of the third MOS transistor Q8 is electrically connected to one end of the sixteenth resistor R16, the other end of the sixteenth resistor R16 is electrically connected to the second port, the emitter of the sixth transistor Q9 is grounded, the base of the sixth transistor Q9 is electrically connected to one end of the seventeenth resistor R17, and the other end of the seventeenth resistor R17 is electrically connected to the control signal output end of the second control module 21; wherein the fifteenth resistor R15, the seventeenth resistor R17 and Q9 constitute a chip selection circuit, and by sending a chip selection signal, one of the multiple battery packs can be selected for data transmission;

[0071] The second state signal receiving circuit comprises an eighteenth resistor R18, one end of the eighteenth resistor R18 is electrically connected to the state signal receiving end of the single battery of the second control block 21, and the other end of the eighteenth resistor R18 is electrically connected to the second port.

[0072] Specifically, the battery pack 1 also includes a wireless communication module 14 that sends electrical parameter information of the power tool or charger 2 to the terminal device, the power input end of the wireless communication module 14 is electrically connected to the power output end of the power supply module 12, and the wireless communication module 14 is controlled and connected to the first control module 11.

[0073] See also Figure 2 As shown, when the battery pack 1 is connected to the power tool or charger 2, the second control module 21 as a host sends a request signal to the battery pack 1 through the data sending end TX2 via the first port, and the first control module 11 as a slave receives the request signal sent by the second control module 21 through the data receiving end RX1 and decides accordingly to send data to the power tool or charger 2 through the data sending end TX1 via the first port BS / RX / TX, or to send the battery pack ID to the power tool or charger 2 through the first state signal sampling circuit via the first port BS / RX / TX, or to send the battery pack temperature or the state signal of a single battery in the battery pack to the power tool or charger 2 through the second state signal sampling circuit via the second port TV; in addition, the power tool or charger 2 can control the trigger module through the second control module 21 to send a trigger signal to the wake-up module in the battery pack 1 through the second port, and after receiving the trigger signal, the wake-up module sends a wake-up signal to the power supply module 12 to control the power supply module 12 to turn on to realize the discharge of the battery pack 1, that is, to realize the wake-up of the battery pack 1.

[0074] The single-cell battery detection module 13 in the present invention can be implemented by a professional chip, such as TI's BQ76920 chip; it can also be implemented by a hardware circuit, such as using an operational amplifier or a transistor to collect a single-pole voltage; the above two implementation methods of the single-cell battery detection module are well known to those skilled in the art and belong to the prior art.

[0075] The first control module 11 and the second control module 12 in the present invention can use a logic control unit, specifically a single-chip microcomputer, and more specifically a Renesas RL78 / G13 single-chip microcomputer chip.

[0076] The first transistor Q1, the second transistor Q2, the third transistor Q4, the fourth transistor Q6, the fifth transistor Q7 and the sixth transistor Q9 in the present invention are all NPN transistors; the first MOS transistor Q3 and the third MOS transistor Q8 in the present invention are both PMOS transistors, and the second MOS transistor Q5 is an NMOS transistor.

[0077] The first power supply VCC1, the second power supply VCC2 and the third power supply VCC3 in the present invention can use 3.3V / 5V power supply, wherein the second power supply VCC2 and the third power supply VCC3 can be combined into one power supply.

[0078] The present invention communicates wirelessly with the terminal device through the wireless communication module, and can perform personalized function customization on the user side, such as torque setting, etc.; it can also realize intelligent functions such as consumable life reminder, remaining power display, charging reminder, and intelligent adjustment of parameters according to working conditions, thereby improving standby or component life.

[0079] As an extension, the present invention can also establish a wireless communication connection with the manufacturing end through a wireless communication module, which is conducive to the collection and analysis of big data on the historical records and operating conditions of the equipment; upgrading and updating the software of the equipment; and facilitating remote fault diagnosis of the equipment after sales.

[0080] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; 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 connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A data communication transmission method for a battery pack, It is characterized in that The battery pack is electrically connected to the electric tool or charger via four ports, the four ports including a first port, a second port, a positive terminal and a negative terminal, the first port has a data transmission function, a data reception function and a function of outputting a first state signal, the second port has a state activation function and a function of outputting a second state signal, the first state signal includes a battery pack ID, and the second state signal includes a battery pack temperature or a state signal of a single battery in the battery pack; the method includes: The battery pack sends configuration information to the power tool or charger via the first port; The battery pack receives electrical parameter information sent by the electric tool or the charger through the first port; The first port is a BS / RX / TX port, and the second port is a TV port.

2. The data communication transmission method of the battery pack according to claim 1, It is characterized in that The method further comprises: The battery pack upgrades the program in the electric tool or the charger through the data sending function and the data receiving function of the first port.

3. The data communication transmission method of the battery pack according to claim 1, It is characterized in that The battery pack further includes: a wireless communication module; The method further comprises: The battery pack sends the electrical parameter information of the electric tool or charger to the terminal device through the wireless communication module.

4. The data communication transmission method of the battery pack according to claim 3, It is characterized in that The wireless communication module is a Bluetooth module and / or a WIFI module.

5. The data communication transmission method of the battery pack according to claim 1, It is characterized in that The battery pack further includes a wake-up module, and the electric tool or charger used in conjunction with the battery pack further includes a trigger module; The method further comprises: The battery pack receives a trigger signal sent by the electric tool or the charger through the second port to wake up the battery pack.

6. A battery pack, It is characterized in that The battery pack includes four ports for electrical connection with an electric tool or a charger, the four ports including a first port, a second port, a positive terminal, and a negative terminal; The first port has a data transmission function, a data reception function and a function of outputting a first state signal, and the second port has a state activation function and a function of outputting a second state signal, the first state signal includes a battery pack ID, and the second state signal includes a battery pack temperature or a state signal of a single battery in the battery pack; The battery pack sends configuration information to the power tool or charger via the first port; The battery pack receives electrical parameter information sent by the electric tool or the charger through the first port; The first port is a BS / RX / TX port, and the second port is a TV port.

7. The battery pack according to claim 6, It is characterized in that The battery pack includes a first control module, a power supply module, a single-cell battery detection module, a first data sending circuit, a first data receiving circuit, a first state signal sampling circuit integrated on a first port, and a wake-up module and a second state signal sampling circuit integrated on a second port; The electric tool or charger electrically connected to the battery pack includes a second control module, a second data sending circuit, a second data receiving circuit, a first status signal receiving circuit integrated on the first port, and a trigger module and a second status signal receiving circuit integrated on the second port.

8. The battery pack according to claim 7, It is characterized in that The first data sending circuit comprises a first resistor and a first transistor, one end of the first resistor is electrically connected to the data sending end of the first control module, the other end of the first resistor is electrically connected to the base of the first transistor, the collector of the first transistor is electrically connected to the first port, and the emitter of the first transistor is grounded; The first data receiving circuit comprises a second resistor, a third resistor, a fourth resistor and a second transistor, one end of the second resistor is electrically connected to the data receiving end of the first control module, the other end of the second resistor is electrically connected to one end of the third resistor and the collector of the second transistor respectively, the other end of the third resistor is electrically connected to the first power supply, the emitter of the second transistor is grounded, the base of the second transistor is electrically connected to one end of the fourth resistor, and the other end of the fourth resistor is electrically connected to the first port; The first state signal sampling circuit includes a fifth resistor and a voltage regulator tube, one end of the fifth resistor and the negative electrode of the voltage regulator tube are both electrically connected to the first port, and the other end of the fifth resistor and the positive electrode of the voltage regulator tube are both grounded; The wake-up module includes a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first MOS transistor, a third transistor and a capacitor, one end of the sixth resistor is electrically connected to the drain of the first MOS transistor, the other end of the sixth resistor is electrically connected to the control signal input end of the power supply module, the control signal input end of the first control module and one end of the seventh resistor, the other end of the seventh resistor is grounded, the source of the first MOS transistor is electrically connected to the power output end of the power supply module and one end of the eighth resistor, the gate of the first MOS transistor is electrically connected to the other end of the eighth resistor and the collector of the third transistor, the emitter of the third transistor is grounded, the base of the third transistor is electrically connected to one end of the ninth resistor, the other end of the ninth resistor is electrically connected to one end of the capacitor, and the other end of the capacitor is electrically connected to the second port; The second state signal sampling circuit includes a tenth resistor, a second MOS tube and a thermistor, the tenth resistor is electrically connected to the state signal sending end of the single battery of the first control module, the other end of the tenth resistor is electrically connected to the gate of the second MOS tube, the source of the second MOS tube is grounded, the drain of the second MOS tube is electrically connected to one end of the thermistor, and the other end of the thermistor is electrically connected to the second port.

9. The battery pack according to claim 7, It is characterized in that The second data sending circuit includes an eleventh resistor and a fourth transistor, one end of the eleventh resistor is electrically connected to the data sending end of the second control module, the other end of the eleventh resistor is electrically connected to the base of the fourth transistor, the collector of the fourth transistor is electrically connected to the first port, and the emitter of the fourth transistor is grounded; The second data receiving circuit comprises a twelfth resistor, a thirteenth resistor and a fifth transistor, one end of the twelfth resistor is electrically connected to the second power supply, the other end of the twelfth resistor is electrically connected to the collector of the fifth transistor and the data receiving end of the second control module, the emitter of the fifth transistor is grounded, the base of the fifth transistor is electrically connected to one end of the thirteenth resistor, and the other end of the thirteenth resistor is electrically connected to the first port; The first state signal receiving circuit comprises a fourteenth resistor, one end of the fourteenth resistor is electrically connected to the second power supply, and the other end of the fourteenth resistor is electrically connected to the first port; The trigger module includes a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a third MOS transistor and a sixth transistor, one end of the fifteenth resistor is electrically connected to the third power supply and the source of the third MOS transistor respectively, the other end of the fifteenth resistor is electrically connected to the gate of the third MOS transistor and the collector of the sixth transistor respectively, the drain of the third MOS transistor is electrically connected to one end of the sixteenth resistor, the other end of the sixteenth resistor is electrically connected to the second port, the emitter of the sixth transistor is grounded, the base of the sixth transistor is electrically connected to one end of the seventeenth resistor, and the other end of the seventeenth resistor is electrically connected to the control signal output end of the second control module; The second state signal receiving circuit comprises an eighteenth resistor, one end of the eighteenth resistor is electrically connected to the state signal receiving end of the single battery of the second control block, and the other end of the eighteenth resistor is electrically connected to the second port.

10. The battery pack according to claim 7, It is characterized in that The battery pack also includes a wireless communication module for sending electrical parameter information of the power tool or charger to the terminal device.

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