WO2021196492A1

WO2021196492A1 - Multi-head charging system for myofascial gun battery pack, and battery charging system

Info

Publication number: WO2021196492A1
Application number: PCT/CN2020/108312
Authority: WO
Inventors: 高健; 张金奎
Original assignee: 南京滨德科技有限公司
Priority date: 2020-03-28
Filing date: 2020-08-11
Publication date: 2021-10-07

Abstract

The present invention provides a multi-head charging system for a myofascial gun battery pack, and a battery charging system. The multi-head charging system comprises a multi-head charger and at least one battery pack. The at least one battery pack can be inserted into the multi-head charger to be charged. Simultaneous charging and use can be achieved or the battery pack can be disassembled to replace batteries, and an under-voltage battery pack can placed in a charging dock to be quickly identified and charged.

Description

Multi-head charging system and battery charging system for myofascial gun battery pack

Technical field

The invention relates to a myofascial gun battery pack and a charging system thereof, in particular to a multi-head charging system and a battery charging system for the myofascial gun battery pack.

Background technique

The myofascial gun, also known as the fascial gun (MASSAGE GUN), uses high-frequency shocks to apply vibrations to massage muscles to promote blood and lymphatic circulation, reduce the accumulation of lactic acid, activate the nervous system and muscles, and slow down the accumulation of scar tissue, etc. Athletes or patients suffering from muscle and muscle pain can be treated and relaxed. The myofascial gun generally adopts a handheld wireless design. It is powered by a battery (especially a charging port can be set for charging). It drives the internal motor assembly to rotate to drive the movement of the impact mechanism. It is applied to different body positions through different massage head attachments. Get a massage.

The existing fascia gun is usually equipped with a detachable battery. When the battery is under power, the battery can be removed from the body for battery replacement, or by directly inserting an external power adapter into the charging port reserved at the bottom of the battery. To charge. But this design, because 4-8 battery cells and battery management chips (IC) and wiring terminals are usually arranged in the battery, it usually makes the grip part of the entire machine (the battery pack is inserted into the body to form a grip Part) is relatively thick and has a bad grip. Moreover, the existing charger is a single square power adapter and is equipped with a cable for charging. Since the fascia gun usually runs at high power and high load, the charging efficiency is relatively low, resulting in a poor user experience.

In other designs, a battery is built into the body of the fascia gun, which reduces the size of the grip, but during the charging process, if used, the battery adapter directly supplies power to the motor controller through the charging cable to directly drive the motor , But the power of the motor usually reaches 40W, 60W or even more, and the design of the power adapter is usually to charge the battery (especially lithium battery and Ni-MH battery), and its charging power is generally relatively small, usually the charging voltage is 5- Between 10W, the current ranges from 0.5-1A, and individual chargers can achieve 2A, but they are far less than the rated power requirements of the motor. This is also in many cases when the user uses the fascia gun to work while charging. The reason that caused the motor to burn.

Summary of the invention

The first aspect of the present invention aims to solve the charging problem of the detachable lithium battery of the myofascial gun in the prior art, and propose a multi-head charging system for the battery pack of the myofascial gun and a battery charging system with communication function.

In order to achieve the above objective, the present invention proposes a multi-head charging system for a myofascial gun battery pack, which includes a multi-head charger and at least one battery pack. At least one battery pack can be inserted into the multi-head charger for charging, wherein:

The at least one battery pack includes a battery pack shell, a battery management chip arranged in the battery pack shell, a plurality of battery cells, and a plurality of first terminals, and the plurality of battery cells and the plurality of first terminals are all electrically connected to the A battery management chip; the at least one battery pack is electrically connected to a myofascial gun or a multi-head charger through the plurality of first terminals; the bottom of the battery pack shell is provided with a power switch and a charger interface, and the power switch is used to switch on Or cut off the electrical connection between the multiple first terminals of the battery pack and the outside, and the charger interface is electrically connected to the battery management chip and used to charge the battery unit through an external charger;

The multi-head charger includes a base, at least two charging docks, and a charging management chip and a detection circuit arranged in the base, wherein the at least two charging docks are arranged on the surface of the base and extend inwardly for accommodating the At least one battery pack, a plurality of second terminals connected to the charging management chip are arranged in the charging dock, the at least one battery pack is arranged to detect its connected state through a detection circuit when it is inserted into the charging dock, and In response to the battery pack being turned on, the charging management chip is controlled to charge the battery pack via the second terminal and the first terminal.

Preferably, the plurality of first terminals include at least a first positive terminal, a first negative terminal, a first communication terminal, and a first detection terminal, and a second positive terminal and a first detection terminal are correspondingly provided in the plurality of second terminals. The two negative terminals, the second communication terminal and the second detection terminal are in one-to-one correspondence with the plurality of first terminals of the battery pack.

Preferably, the detection circuit includes a detection resistor connected in series with the second detection terminal and a current detection circuit for detecting a current flowing through the detection resistance, and the first detection terminal is arranged to be in contact with the second detection terminal When it is connected between the second detection terminal and the power switch at the bottom of the battery pack.

Preferably, the charging management chip controls the charging of the inserted battery pack in response to the detection circuit detecting a preset electric signal.

Preferably, an alarm circuit is provided in the multi-head charger, which is electrically connected to the charging management chip.

Preferably, the charger is further provided with an indicator panel for indicating the charging state, and an indicator lamp is provided inside, which is electrically connected to the charging management chip.

Preferably, the at least one battery pack is provided with a battery power detection circuit and an indicator light for indicating the battery power, both of which are electrically connected to the battery management chip.

According to the improvement of the present invention, a battery charging system with at least one battery pack and a charger for a myofascial gun is also proposed, the at least one battery pack is detachably installed in the charging dock of the charger, wherein :

The at least one battery pack has a first terminal set that is electrically connected to the charger to realize electric energy transmission, and is used to charge the battery pack, and is arranged at the bottom of the battery pack and is used to connect the battery pack and the charger/muscles. A power switch that is electrically connected between the film guns; the at least one battery pack further includes a first detection terminal, which is electrically connected to the power switch;

The charger has a second detection terminal matched with the first detection terminal, a second terminal group matched with the first terminal group for charging, and a charging management chip and a detection circuit; the detection circuit is arranged on the charging management chip and the first terminal group. Between the two detection terminals, when the at least one battery pack is inserted into the charger, a series connection is formed between the power switch, the first detection terminal, the second detection terminal, the detection circuit, and the charging management chip. The chip detects the on-off state of the battery pack based on the detection circuit to control charging.

Preferably, the charger further includes an alarm circuit electrically connected to the charging management chip.

Preferably, the at least one battery pack is further provided with a charger interface for charging the battery pack through an external power adapter, and is electrically connected to a battery management chip inside the battery pack.

Preferably, the at least one battery pack is provided with a power detection circuit, which is electrically connected to the battery management chip and used to detect the battery power of the battery pack. The battery management chip communicates with the myofascial gun or the charger through the communication terminal in the first terminal group. Communication.

Preferably, a charging indicator group is provided on the charger to indicate the power state of each battery pack, wherein the charging indicator group corresponding to each battery pack includes N LED indicators, and N is 3 or more. A positive integer of, the multiple LED indicators are set to indicate according to the power of the battery pack.

Preferably, the charging indicator group of the charger is set to indicate according to the percentage of the current charging state, wherein the LED indicator corresponding to the fully charged part is always on, and the LED indicator corresponding to the underfilled part flashes.

Compared with the prior art, the charging system for the battery pack of the myofascial gun of the present invention has the following significant beneficial effects:

1. The traditional battery pack for fascia gun is equipped with three terminals in the contact part connected with the fascia gun, the positive and negative poles and the communication terminal, whether it is built-in or detachable, usually only through an external power adapter. Charging affects the charging efficiency and experience of the fascia gun. For detachable battery packs, there is no matching charging stand for charging; the multi-head charging dock is designed in the solution of the present invention, and the battery pack can not only be realized through external The adapter can be used for charging while charging, and the battery pack can be disassembled to replace the battery, and the under-voltage battery pack can be quickly charged in the charging dock;

2. The battery pack of the traditional fascia gun is equipped with a power switch at the bottom of the battery for protection. The battery can discharge the fascia gun only after the power switch is turned on. Therefore, it does not matter whether the fascia gun is charged or not. It can be used through the charging interface at the bottom, but if it is disassembled and charged through the positive and negative terminals, since the terminals and the battery/management chip are disconnected, they must be connected after the battery is connected. During operation, it is often forgotten or not turned on in place, resulting in no actual charging; in the solution of the present invention, a detection circuit is set between the battery pack and the charger to detect the power between the battery pack of the fascia gun and the charger. Connection status, if there is no actual connection (only terminal contact), an alarm will be given, and charging can only be carried out in the actual electrical connection status; it can be applied to the existing fascia gun battery pack, and there is no need to change the battery pack’s Design (for example, removing the power switch);

3. In the traditional charging scheme, whether it is a built-in battery pack or a detachable battery pack, all flashes during charging, and the charging status of the battery cannot be clearly understood. Through the communication with the battery pack during the charging process and the combination of the constant light and flashing of the power display, the present invention has a clearer understanding of the charging state of the battery and is convenient to use.

It should be understood that all combinations of the aforementioned concepts and the additional concepts described in more detail below can be regarded as part of the inventive subject matter of the present disclosure as long as such concepts are not mutually contradictory. In addition, all combinations of the claimed subject matter are regarded as part of the inventive subject matter of the present disclosure.

The foregoing and other aspects, embodiments and features of the teachings of the present invention can be more fully understood from the following description with reference to the accompanying drawings. Other additional aspects of the present invention, such as the features and/or beneficial effects of the exemplary embodiments, will be apparent in the following description, or learned from the practice of the specific embodiments taught in accordance with the present invention.

Description of the drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in each figure may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in every figure. Now, embodiments of various aspects of the present invention will be described by way of examples and with reference to the accompanying drawings, in which:

Fig. 1 is a schematic diagram of the structure of the multi-head charger of the present invention.

Figures 2-4 are structural diagrams of the battery pack of the myofascial gun of the present invention, in which Figure 2 is the overall structural diagram, Figure 3 is the structural diagram of the terminal side, and Figure 4 is the structural diagram of the bottom.

Fig. 5 is a schematic diagram of the principle of the battery charging system of the present invention.

Detailed ways

In order to better understand the technical content of the present invention, specific embodiments are described in conjunction with the accompanying drawings as follows.

In this disclosure, various aspects of the present invention are described with reference to the accompanying drawings, in which numerous illustrated embodiments are shown. The embodiments of the present disclosure are not necessarily intended to include all aspects of the present invention. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the present invention are not Limited to any implementation. In addition, some aspects disclosed in the present invention can be used alone or in any appropriate combination with other aspects disclosed in the present invention.

The multi-head charging system for a myofascial gun battery pack according to the exemplary embodiment shown in FIGS. 1-5 includes a multi-head charger 100 and at least one battery pack 200, at least one battery pack 200 can be inserted into the multi-head charger 100 In the charging dock, the battery pack is charged through the electrical connection of the electrode terminals.

As shown in FIGS. 2-4, the battery pack 200 includes a battery pack shell and a battery pack 205, a battery management chip (IC) 206, a battery detection circuit 207, a battery temperature detection circuit 208, and a battery pack arranged at the bottom of the battery pack. The power switch 220 and the charger interface 230 are connected. The housings of the battery pack and the charger are preferably made of hard plastic, and heat dissipation holes are provided at the bottom and/or sides.

2, the battery pack 200 has a cylindrical structure as a whole, with a proximal end and a distal end, and the power switch 220 and the charger interface 230 are provided at the bottom of the proximal end. Preferably, the battery management chip 206 is arranged in the proximal end.

The distal end of the battery pack is configured to be inserted into the myofascial gun for power supply. It is particularly preferred that the cross-sectional size of the cylindrical body at the distal end is slightly smaller than the cross-sectional size of the proximal cylinder to facilitate insertion.

The battery pack 205 preferably adopts a multi-cell battery (Cell), such as a lithium battery or a nickel-hydrogen battery or other rechargeable battery cells, which are connected in series, in parallel, or a combination thereof to form the battery pack.

In the embodiment of the present invention, multiple battery cells are electrically connected to the battery management chip through wires, external discharge management is realized through the processing of the battery management chip, and charging management of the battery cells is realized through the battery management chip.

With reference to Figures 2 and 3, a first terminal group is provided on the end surface or side surface of the distal end of the battery pack, which is electrically connected to the battery management chip. The first terminal group includes a plurality of electrical connection terminals (ie, first terminals), specifically a first positive terminal 201, a first negative terminal 202, a first communication terminal 203, and a first detection terminal 204.

As shown in FIGS. 2 and 3, reference numeral 210 denotes a clamping member when the battery pack is connected to the myofascial gun, so as to maintain the locked connection between the battery pack and the myofascial gun.

In this way, when the battery pack is inserted into the myofascial gun/charger, the battery pack is electrically connected to the myofascial gun or the multi-head charger through a plurality of first terminals.

As shown in FIGS. 2, 3 and 5, the power switch 220 is arranged between the first terminal group and the power management chip 206, so that the external discharge of the battery pack can be controlled by the power switch 220. For example, the electrical connection between the plurality of first terminals of the battery pack and the outside is turned on or off by a power switch.

The charger interface 230 is electrically connected to the battery management chip and used to charge the battery cells in the battery pack through an external charger (such as a power adapter).

As shown in FIG. 5, the battery detection circuit 207 is electrically connected to the battery management chip 206 for detecting the discharge current and battery voltage of the battery. Preferably, the battery detection circuit 207 includes a discharge current detection circuit for detecting the discharge current of the battery pack. It is also possible to provide a voltage detection circuit (ie, power detection circuit), which is provided at both ends of the battery pack 205, for detecting the voltage of the battery, that is, power detection. Both the voltage detection circuit and the discharge current detection circuit are electrically connected to the battery management chip 206.

As shown in combination 5, the battery pack 200 and the charger 100 perform data communication through the communication terminal to achieve synchronization of battery power information.

As shown in FIGS. 1 and 5, the charger, particularly preferably a multi-head charger 100, includes a base, at least two charging docks 110, and a charging management chip 120, a transformer circuit 130, and a charging current detection circuit 152 arranged in the base. The temperature detection circuit 153 and a detection circuit for detecting the open state of the battery pack after being inserted into the charging dock of the charger. The second terminal is exemplarily not indicated in FIG. 1.

The charging dock 100 is arranged on the surface of the base and extends inward, and is used for accommodating the battery pack 200.

As shown in the figure, the surface of the charger 100 is also provided with an indicator panel 150, inside which is provided an indicator light group 151 for indicating the charging state, which is electrically connected to the charging management chip.

The charging dock 100 is provided with a second terminal group connected to the charging management chip 120, and has a plurality of second terminals, specifically a second positive terminal 111, a second negative terminal 112, a second communication terminal 113, and a second detection terminal 114 , And correspond to the multiple first terminals of the battery pack one-to-one.

As shown in FIG. 5, the multi-head charger 100 takes electricity from the mains (for example, 220VAC) through a plug, and uses a transformer circuit as a charging circuit for AC/DC conversion and voltage stabilization, and under the control of the charging management chip, Externally output charging. Preferably, the charging circuit adopts constant current or constant voltage charging to realize fast charging.

When the battery pack is inserted into the charging dock 110, its on state is detected by the detection circuit, and in response to the battery pack being turned on, the charging management chip is controlled to charge the battery pack via the second terminal and the first terminal, that is, the positive and negative terminals The electric energy is transferred between the children for charging.

With reference to FIG. 5, the detection circuit is provided between the charge management chip 120 and the second detection terminal 114.

Optionally, the detection circuit includes a detection resistor 115 connected in series with the second detection terminal 114 and a current detection circuit 116, and the current detection circuit 116 is used to detect the current flowing through the detection resistor. As shown in the figure, when the first detection terminal 204 is set to be in contact with the second detection terminal 114, it is connected between the second detection terminal 114 and the power switch 220 at the bottom of the battery pack.

In this way, in the embodiment of the present invention, the charging management chip 120 controls the charging of the inserted battery pack in response to the detection circuit detecting the preset electrical signal. For example, the resistance value of the detection resistor 115 can be set according to the charging current of different chargers. The current detection circuit 116 is preferably implemented by a high-sensitivity and fast-response detection IC circuit. In the present invention, optionally, the magnitude of the detection current can be Set it between 5-20mA.

As shown in the figure, an alarm circuit 154 is provided in the multi-head charger, which has at least one buzzer, and is electrically connected to the charging management chip.

In this way, when the battery pack is inserted into the charger but the preset state (that is, the connected state of the battery pack) is not seen through the detection circuit, an alarm sound is issued, prompting that the battery pack can be charged after being connected.

In this way, when the battery pack 200 is inserted into the charger 100, a series connection is formed between the power switch 220, the first detection terminal 204, the second detection terminal 114, the detection circuit, and the charging management chip 120. The charging management chip is based on the detection circuit Detect the switch state of the battery pack to control charging. That is, after the power switch 220 is turned on, the transmission of electric energy can be realized. Otherwise, the charging circuit from the charger to the battery pack is open.

In an alternative embodiment, the surface of the outer shell of the battery pack may also be provided with an indicator lamp or an indicator panel for indicating battery power, such as an indicator lamp or an indicator panel provided on the ground, or a ring indicator provided on the side of the outer shell.

In a preferred embodiment, the charging indicator light group set on the charger is used to indicate the charge state of each battery pack, wherein the charging indicator light group corresponding to each battery pack includes N LED indicators, N is a positive integer greater than or equal to 3, and multiple LED indicators are set to indicate according to the power of the battery pack.

In a preferred embodiment, the charging indicator group of the charger is set to indicate according to the percentage of the current charging state, wherein the LED indicator corresponding to the fully charged part is always on, and the LED indicator corresponding to the underfilled part flashes.

In an optional embodiment of the present invention, for example, four LED indicators are used as an indicator of a battery pack, and each light indicates a 25% power state. When the charger synchronizes with the battery pack, the current power of the battery pack is obtained. More than 25%, the first LED indicator light is always on, for example, it is indicated by a green light, and the remaining three LED indicators flash, which means that at least 25% of the battery is fully charged. By analogy, until the 100% charging is completed, the 4 LED indicators are always on, so that the charging status can be understood in real time during the charging process, which is convenient to use.

Although the present invention has been disclosed as above in preferred embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to what is defined in the claims.

Claims

A multi-head charging system for a myofascial gun battery pack is characterized by comprising a multi-head charger and at least one battery pack, at least one battery pack can be inserted into the multi-head charger for charging, wherein:

The at least one battery pack includes a battery pack shell, a battery management chip arranged in the battery pack shell, a plurality of battery cells, and a plurality of first terminals, and the plurality of battery cells and the plurality of first terminals are all electrically connected to the Battery management chip; the at least one battery pack is electrically connected to the myofascial gun or the multi-head charger through the plurality of first terminals; the bottom of the battery pack shell is provided with a power switch and a charger interface, and the power switch is used to switch on Or cut off the electrical connection between the multiple first terminals of the battery pack and the outside, and the charger interface is electrically connected to the battery management chip and used to charge the battery unit through an external charger;

The multi-head charger includes a base, at least two charging docks, and a charging management chip and a detection circuit arranged in the base, wherein the at least two charging docks are arranged on the surface of the base and extend inwardly for accommodating the At least one battery pack, a plurality of second terminals connected to the charging management chip are arranged in the charging dock, the at least one battery pack is arranged to detect its connected state through a detection circuit when it is inserted into the charging dock, and In response to the battery pack being turned on, the charging management chip is controlled to charge the battery pack via the second terminal and the first terminal.
The multi-head charging system for a myofascial gun battery pack according to claim 1, wherein the plurality of first terminals include at least a first positive terminal, a first negative terminal, a first communication terminal, and a first terminal. A detection terminal, a second positive terminal, a second negative terminal, a second communication terminal, and a second detection terminal are correspondingly provided in the plurality of second terminals, and correspond to the plurality of first terminals of the battery pack in a one-to-one correspondence.
The multi-head charging system for a myofascial gun battery pack according to claim 1, wherein the detection circuit includes a detection resistor connected in series with the second detection terminal and a detection resistor for detecting flow through the detection resistor. A current detection circuit for current, when the first detection terminal is set to be in contact with the second detection terminal, it is connected between the second detection terminal and the power switch at the bottom of the battery pack.
The multi-head charging system for a myofascial gun battery pack according to claim 1, wherein the charging management chip controls the charging of the inserted battery pack in response to the detection circuit detecting a preset electric signal.
The multi-head charging system for a myofascial gun battery pack according to claim 1, wherein an alarm circuit is provided in the multi-head charger, which is electrically connected to the charging management chip.
The multi-head charging system for a myofascial gun battery pack according to claim 1, wherein the charger is further provided with an indicator panel for indicating the charging state, and an indicator light is provided inside, which is electrically connected to the Charge management chip.
The multi-head charging system for a myofascial gun battery pack according to claim 1, wherein the at least one battery pack is provided with a battery power detection circuit and an indicator light for indicating the battery power, both of which are electrically connected to The battery management chip.
A battery charging system with at least one battery pack and a charger for a myofascial gun, characterized in that the at least one battery pack is detachably installed in the charging dock of the charger, wherein:

The at least one battery pack has a first terminal set that is electrically connected to the charger to realize electric energy transmission, and is used to charge the battery pack, and is arranged at the bottom of the battery pack and is used to connect the battery pack and the charger/muscles. A power switch that is electrically connected between the film guns; the at least one battery pack further includes a first detection terminal, which is electrically connected to the power switch;

The charger has a second detection terminal matched with the first detection terminal, a second terminal group matched with the first terminal group for charging, and a charging management chip and a detection circuit; the detection circuit is arranged on the charging management chip and the first terminal group. Between the two detection terminals, when the at least one battery pack is inserted into the charger, a series connection is formed between the power switch, the first detection terminal, the second detection terminal, the detection circuit, and the charging management chip. The chip detects the on-off state of the battery pack based on the detection circuit to control charging.
8. The battery charging system according to claim 8, wherein the charger further comprises an alarm circuit electrically connected to the charging management chip.
The battery charging system according to claim 8, wherein the at least one battery pack is further provided with a charger interface for charging the battery pack through an external power adapter, and is electrically connected to the battery management inside the battery pack. chip.
The battery charging system according to claim 10, wherein the at least one battery pack is provided with a power detection circuit, which is electrically connected to the battery management chip and used to detect the battery power of the battery pack, and the battery management chip passes through the first terminal group The communication terminal in the communication terminal communicates with the myofascial gun or the charger.
The battery charging system according to claim 8, wherein the charger is provided with a charging indicator group for indicating the state of charge of each battery pack, wherein the charging indicator group corresponding to each battery pack includes There are N LED indicators, where N is a positive integer greater than or equal to 3, and the N LED indicators are set to indicate according to the power of the battery pack.
The battery charging system according to claim 12, wherein the charging indicator group of the charger is set to indicate according to the percentage of the current charging state, and the LED indicator corresponding to the fully charged part is always on, The LED indicator corresponding to the full part flashes.