CN212343355U - Adapter and battery pack discharging system - Google Patents
Adapter and battery pack discharging system Download PDFInfo
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- CN212343355U CN212343355U CN202020682134.7U CN202020682134U CN212343355U CN 212343355 U CN212343355 U CN 212343355U CN 202020682134 U CN202020682134 U CN 202020682134U CN 212343355 U CN212343355 U CN 212343355U
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Abstract
The utility model discloses an adapter and battery package discharge system, include: the battery pack (1), the electric tool (2) and the adapter (3) for connecting the battery pack (1) and the electric tool (2), wherein a discharging signal receiving terminal (33) of the adapter (3) is connected with a first discharging port (12) of the battery pack, a discharging signal output terminal (34) of the adapter (3) is connected with a second discharging port (22) of the electric tool, the first discharging port (12) of the battery pack outputs a first signal, the second discharging port (22) of the electric tool receives a second signal, and a conversion circuit (35) of the adapter (3) converts a low-level signal or a high-level signal of the first signal into a corresponding high-level signal or a corresponding low-level signal of the second signal and outputs the high-level signal or the low-level signal to the second discharging port (22). The utility model discloses a battery package only needs hardware control can realize the protection, and the converter only needs to utilize simple structure can realize the matching between the battery package of different specifications and the electric tool, and with low costs.
Description
[ technical field ]
The utility model relates to a technical field of lithium cell charge-discharge especially relates to an used adapter of electric tool field class and battery package discharge system.
[ background art ]
The lithium cell electric tool brings convenience for people's work, every manufacturer has the design production to belong to the lithium cell package and the direct current electric tool of oneself mutual supporting, but because of the safety of lithium cell package, the competition of trade, the reason in aspects such as secret of technique, the interface of lithium cell package all has the relation of mutually supporting with the direct current electric tool, so, the electric tool of a brand and another family's battery package can not the mutual use usually, when the user purchases the electric tool of the different grade type of a plurality of brands, can cause the confusion of battery package matching, and the low-usage of battery package, cause the waste, and when the battery package electric quantity exhausts, for solving the condition of emergent use, even there are other workable battery packages also can't use.
Therefore, there is a need for a new adapter and battery pack discharging system that overcomes the above problems.
[ contents of utility model ]
To the not enough of prior art, the utility model aims to provide a low-cost adapter and battery package discharge system.
The utility model provides a prior art problem can adopt following technical scheme: the method comprises the following steps: the battery pack comprises a battery unit, a detection unit and a first discharge port connected to the detection unit, the detection unit controls the first discharge port to output a first signal, the electric tool is provided with a second discharge port which receives a second signal, the adaptor comprises a conversion circuit, a discharge signal receiving terminal and a discharge signal output terminal, the discharge signal receiving terminal is connected with the first discharge port of the battery pack, the discharge signal output terminal is connected with the second discharge port of the electric tool, the conversion circuit converts a low-level signal or a high-level signal of the first signal into a corresponding high-level signal or a corresponding low-level signal of the second signal, and outputting the signal to the second discharge port.
The further improvement scheme is as follows: the detection unit detects that the voltage value of a single battery is higher than 2.7V, and when the temperature value of the temperature sensor is-20-70 ℃, the battery pack is allowed to discharge.
The further improvement scheme is as follows: when the detection unit detects that the voltage value of a single battery is lower than 2.7V or the temperature value of the temperature sensor is not between-20 ℃ and 70 ℃, the battery pack is not allowed to discharge.
The further improvement scheme is as follows: when the battery pack allows discharging, the first signal is a low-level signal, the low-level signal is converted into a high-level signal of a second signal through the conversion circuit, and the electric tool allows working; when the battery pack is not allowed to discharge, the first signal is a high-level signal, the high-level signal is converted into a low-level signal of the second signal through the conversion circuit, and the electric tool is not allowed to work.
The further improvement scheme is as follows: when the battery pack allows discharging, the first signal is a high-level signal, the high-level signal is converted into a low-level signal of a second signal through the conversion circuit, and the electric tool allows working; when the battery pack is not allowed to discharge, the first signal is a low level signal, the low level signal is converted into a high level signal of the second signal through the conversion circuit, and the electric tool is not allowed to work.
The further improvement scheme is as follows: the conversion circuit comprises a triode, an emitting electrode of the triode is connected with the positive electrode of a battery pack battery unit, a base electrode of the triode is connected with a first discharging port of the battery pack through the discharging signal receiving terminal, and a collector electrode of the triode is connected with a second discharging port of the electric tool through the discharging signal output terminal.
The further improvement scheme is as follows: the conversion circuit comprises a field effect transistor, the source electrode of the field effect transistor is connected with the positive electrode of the battery pack battery unit, the grid electrode of the field effect transistor is connected with the first discharging port of the battery pack through the discharging signal receiving terminal, and the drain electrode of the field effect transistor is connected with the second discharging port of the electric tool through the discharging signal output terminal.
The invention can also adopt the following technical scheme for solving the problems in the prior art: an adaptor, comprising: the switching circuit is connected with a discharge signal receiving terminal and a discharge signal output terminal of the switching circuit, the discharge signal receiving terminal receives a first signal, the discharge signal output terminal outputs a second signal, and the switching circuit converts a low-level signal or a high-level signal of the first signal into a high-level signal or a low-level signal of the corresponding second signal.
The further improvement scheme is as follows: the conversion circuit comprises a triode, the base electrode of the triode is connected with the discharge signal receiving terminal, and the collector electrode of the triode is connected with the discharge signal output terminal.
The further improvement scheme is as follows: the conversion circuit comprises a field effect transistor, the grid electrode of the field effect transistor is connected with the discharge signal receiving terminal, and the drain electrode of the field effect transistor is connected with the discharge signal output terminal.
Compared with the prior art, the utility model discloses following beneficial effect has: by designing the adapter, connecting the discharging signal receiving terminal of the adapter with the first discharging port of the battery pack, connecting the discharging signal output terminal of the adapter with the second discharging port of the electric tool, outputting the first signal from the first discharging port of the battery pack, receiving the second signal from the second discharging port of the electric tool, converting the low level signal or the high level signal of the first signal into the high level signal or the low level signal of the corresponding second signal through the conversion circuit of the adapter, and outputting the high level signal or the low level signal to the second discharging port, the converter can realize the matching between the battery packs and the electric tool with different specifications only by using a simple structure, and the cost is low.
[ description of the drawings ]
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:
fig. 1 is a schematic view of a state in which the discharge system of the present invention is applied to an electric power tool;
fig. 2 is a circuit diagram of a discharge system according to a first embodiment of the present invention;
fig. 3 is a circuit diagram of a discharge system according to a second embodiment of the present invention.
The meaning of the reference symbols in the figures:
1. battery pack 11, battery pack electrode tab 12, first discharge port 13, detection unit 2, electric tool 21, tool electrode tab 22, second discharge port 23, control unit 24, current sampling circuit 3, adapter 31, battery pack connection tab 32, tool connection tab 33, discharge signal receiving terminal 34, discharge signal output terminal 35, conversion circuit 36, field effect transistor
[ detailed description of the invention ]
The present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 and 2, a discharge system according to a first embodiment of the present invention includes a battery pack 1, an electric tool 2, and an adapter 3 connecting the battery pack 1 and the electric tool 2, wherein a battery pack electrode plate 11 is disposed at the top of the battery pack 1, a tool electrode plate 21 is disposed at the bottom of the electric tool 2, a battery pack connecting plate 31 is disposed at the bottom of the adapter 3, a tool connecting plate 32 is disposed at the top of the adapter 3, the battery pack connecting plate 31 at the bottom of the adapter 3 is electrically connected to the battery pack electrode plate 11 at the top of the battery pack, the tool connecting plate 32 at the top of the adapter is electrically connected to the tool electrode plate 21 at the bottom of the electric tool, the battery pack electrode plate 11 includes a positive electrode, a negative electrode, and a first discharge port 12, the battery pack connecting plate 31 at the bottom of the adapter has a positive electrode, a negative electrode, a discharge signal receiving terminal 33, and the tool connecting plate, The tool electrode plate 21 is provided with a positive electrode, a negative electrode and a second discharge port 22, the positive electrodes and the negative electrodes of the battery pack 1, the adapter 3 and the electric tool 2 are respectively and electrically connected, namely, the discharge signal receiving terminal 33 of the adapter 3 is connected with the first discharge port 12 of the battery pack, and the discharge signal output terminal 34 of the adapter is connected with the second discharge port 22 of the electric tool.
The battery pack 1 further includes a battery unit formed by connecting a plurality of single batteries in series, a detection unit 13 and a temperature sensor, the single batteries include a cell1, a cell2, a cell3, a cell4 and a cell5, the single batteries are connected with the detection unit through a plurality of resistors R1, R2, R3, R4 and R5, one ends of the resistors R1, R2, R3, R4 and R5 are respectively connected with the positive electrodes of the single batteries ell1, cell2, cell3, cell4 and cell5, the other ends of the resistors are connected with the detection unit 13 and are used for detecting the voltage of the single batteries, the temperature sensor is electrically connected with the detection unit 13 and is used for outputting the temperature of the battery pack 1 to the detection unit 13, the detection unit 13 judges whether the battery pack is allowed to discharge or not according to the detected voltage of the single batteries and the temperature of the battery pack and outputs a first signal to the first discharge port 12, the first discharge port 12 is connected with the detection unit 13 (in an integrated circuit, not shown in the embodiment), when the battery pack detection unit 13 detects that the voltage value of a single battery is higher than 2.7V, the temperature value of the temperature sensor is-20-70 ℃, the battery pack 1 is allowed to discharge, the integrated circuit is conducted, the first discharge port 12 is grounded, and namely the first signal is a low-level signal; when the voltage value of a single battery detected by the battery pack detection unit 13 is lower than 2.7V or the temperature detected by the temperature sensor is not in the range of-20 to 70 ℃, the battery pack is not allowed to discharge, the integrated circuit is not conducted, the first discharge port 12 is connected with a pull-up power supply of the integrated circuit, that is, the first signal is a high-level signal.
The electric tool 2 further comprises a control unit 23, a tool switch S1 connected in series with the positive pole of the electric tool, a current sampling circuit 24 connected in series with the negative pole of the electric tool, and a protection switch S2, when the electric tool receives a discharge permission signal, the control unit 23 of the electric tool 2 controls the protection switch S2 to be turned on, the battery pack 1 is communicated with the circuit of the electric tool 2, the electric tool 2 can work, and the current sampling circuit 24 comprises a sampling resistor and is used for detecting a discharge current when the electric tool 2 discharges; when the electric tool 2 receives the discharging non-permission signal, the control unit 23 of the electric tool controls the protection switch S2 to be switched off, the circuit of the battery pack 1 and the electric tool 2 is switched off, and the electric tool 2 can be stopped for protection.
In the present embodiment, when the battery pack 1 and the electric power tool 2 are not directly compatible, that is, when it is understood that the discharge standard of the battery pack 1 and the operation standard of the electric power tool 2 are not consistent, the battery pack 1 outputs a low level signal as the permission of discharge, and the electric power tool 2 receives a high level signal as the permission of operation; the battery pack 1 outputs a high level signal as a non-allowable discharge, and the electric power tool 2 receives a low level signal as an example of a non-allowable operation, the adaptor 3 needs to be installed between the battery pack 1 and the electric power tool 2, the adaptor 3 includes a switching circuit 35, in this embodiment, the switching circuit 35 is composed of a transistor Q1, an emitter and a base of the transistor Q1 are connected in parallel to a positive electrode of the adaptor 3 through resistors R6 and R7, respectively, a positive electrode of the adaptor 3 is connected to positive electrodes of the battery pack 1 and the electric power tool 2, a base of the transistor Q1 is connected in series to the discharge signal receiving terminal 33 through a resistor R8, and a collector of the transistor Q1 is connected to the discharge signal output terminal 34. When the first discharging port 12 of the battery pack outputs a low level signal, the emitter potential of the transistor Q1 is higher than the base potential, the transistor Q1 is turned on, the discharging signal output terminal 34 of the adaptor 3 outputs a high level signal, the second discharging port 22 of the electric tool 2 receives a high level signal, and the electric tool 2 operates. When the battery pack 1 does not allow discharging, the first discharging port 12 of the battery pack 1 outputs a high level signal, the triode Q1 is cut off, the collector is suspended, the discharging signal output terminal 34 is grounded in the electric tool 2 through a resistor, the second output terminal 22 of the electric tool 2 receives a low level signal, and the electric tool 2 can be stopped for protection.
On the contrary, when the battery pack 1 outputs a high level signal as the permission of discharging, and the electric tool 2 receives a low level signal as the permission of working; when the battery pack 1 allows discharging, the conversion circuit 35 converts the high level signal of the first signal into the corresponding low level signal of the second signal, and the electric tool 2 allows operating; when the battery pack 1 does not allow discharging, the conversion circuit 35 converts the low level signal of the first signal into the high level signal of the corresponding second signal, and the electric tool 2 does not allow operation.
Referring to fig. 3, in order to provide a discharging system according to a second embodiment of the present invention, the switching circuit 35 is composed of a fet 36, a source and a gate of the fet 36 are respectively connected in parallel to a positive electrode of the adaptor 3 through resistors R6 and R7, the positive electrode of the adaptor 3 is respectively connected to positive electrodes of the battery pack 1 and the electric tool 2, the gate of the fet 36 is connected in series to the discharging signal receiving terminal 33 through a resistor R8, and a drain of the fet 36 is connected to the discharging signal output terminal 34. When the first discharge port 12 outputs a low level signal, the source potential of the field effect transistor 36 is higher than the gate potential, the field effect transistor 36 is turned on, the drain potential is a high level signal, the second discharge port 22 of the electric tool receives the high level signal, and the electric tool operates. When the battery pack 1 does not allow discharging, the first discharging port 12 of the battery pack 1 outputs a high level signal, and the high level signal is converted into a low level signal through the conversion circuit 35 and is output to the second discharging port 22 of the electric tool, so that the electric tool 2 can be stopped for protection.
Similarly, when the battery pack 1 allows discharging, the first discharging port 12 of the battery pack 1 outputs a high level signal, and the high level signal is converted into a low level signal through the conversion circuit 35 and output to the second discharging port 22 of the electric tool, so that the electric tool 2 works; when the battery pack 1 does not allow discharging, the first discharging port 12 of the battery pack 1 outputs a low level signal, and the low level signal is converted into a high level signal through the conversion circuit 35 and is output to the second discharging port 22 of the electric tool, so that the electric tool 2 can be stopped for protection. The battery pack 1 of the discharging system can realize protection only by hardware control, and the converter 3 can realize matching between the battery packs of different specifications and the electric tool only by utilizing a simple structure, and is low in cost.
The utility model discloses a discharge system is connected adapter 3's discharge signal receiving terminal 33 and battery package 1's first discharge port 12, is connected adapter 3's discharge signal output terminal 34 and electric tool 2's second discharge port 22, and adapter 3's converting circuit 35 converts the low level signal or the high level signal of first signal into the high level signal or the low level signal of the second signal that corresponds, exports for the second discharge port. The protection circuit of the battery pack is simple to control, the converter can realize matching between the battery packs with different specifications and the electric tool only by utilizing a simple structure, and the cost is low.
The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that there are numerous other alternatives to the adapter and battery pack discharge system of the present invention without departing from the principles and scope of the invention. The protection scope of the present invention is subject to the content of the claims.
Claims (10)
1. A battery pack discharge system comprising: the battery pack comprises a battery pack (1), an electric tool (2) and an adapter (3) for connecting the battery pack (1) and the electric tool (2), wherein the battery pack (1) comprises a battery unit, a detection unit (13) and a first discharge port (12) connected to the detection unit (13), the detection unit (13) controls the first discharge port (12) to output a first signal, the electric tool (2) is provided with a second discharge port (22), and the second discharge port (22) receives a second signal; the method is characterized in that: the adapter (3) comprises a conversion circuit (35), a discharge signal receiving terminal (33) connected to the conversion circuit (35) and a discharge signal output terminal (34), wherein the discharge signal receiving terminal (33) is electrically connected with a first discharge port (12) of the battery pack, the discharge signal output terminal (34) is electrically connected with a second discharge port (22) of the electric tool, and the conversion circuit (35) converts a low-level signal or a high-level signal of the first signal into a corresponding high-level signal or a corresponding low-level signal of the second signal and outputs the high-level signal or the corresponding low-level signal to the second discharge port (22).
2. The battery pack discharge system of claim 1, wherein: the detection unit (13) detects that the voltage value of a single battery is higher than 2.7V, and when the temperature value of the temperature sensor is-20-70 ℃, the battery pack (1) is allowed to discharge.
3. The battery pack discharge system of claim 1, wherein: when the detection unit (13) detects that the voltage value of a single battery is lower than 2.7V or the temperature value of the temperature sensor is not between-20 ℃ and 70 ℃, the battery pack (1) is not allowed to discharge.
4. The battery pack discharge system according to any one of claims 1 to 3, wherein: when the battery pack allows discharging, the first signal is a low-level signal, the low-level signal is converted into a high-level signal of a second signal through the conversion circuit (35), and the electric tool (2) allows working; when the battery pack is not allowed to discharge, the first signal is a high-level signal, the high-level signal is converted into a low-level signal of the second signal through the conversion circuit (35), and the electric tool (2) is not allowed to work.
5. The battery pack discharge system according to any one of claims 1 to 3, wherein: when the battery pack allows discharging, the first signal is a high-level signal, the high-level signal is converted into a low-level signal of a second signal through the conversion circuit (35), and the electric tool (2) allows working; when the battery pack is not allowed to discharge, the first signal is a low-level signal, the low-level signal is converted into a high-level signal of the second signal through the conversion circuit (35), and the electric tool (2) is not allowed to work.
6. The battery pack discharge system of claim 1, wherein: the conversion circuit (35) comprises a triode, an emitting electrode of the triode is connected with the positive electrode of the battery pack battery unit, a base electrode of the triode is connected with a first discharging port (12) of the battery pack (1) through the discharging signal receiving terminal (33), and a collecting electrode of the triode is connected with a second discharging port (22) of the electric tool through the discharging signal output terminal (34).
7. The battery pack discharge system of claim 1, wherein: the conversion circuit (35) comprises a field effect transistor (36), the source electrode of the field effect transistor (36) is connected with the positive electrode of the battery pack battery unit, the grid electrode of the field effect transistor is connected with the first discharging port (12) of the battery pack through the discharging signal receiving terminal (33), and the drain electrode of the field effect transistor is connected with the second discharging port (22) of the electric tool through the discharging signal output terminal (34).
8. An adaptor, comprising: a conversion circuit (35), a discharge signal receiving terminal (33) and a discharge signal output terminal (34) connected to the conversion circuit (35); the method is characterized in that: the discharge signal receiving terminal (33) receives a first signal, the discharge signal output terminal (34) outputs a second signal, and the conversion circuit (35) converts a low-level signal or a high-level signal of the first signal into a high-level signal or a low-level signal of the corresponding second signal.
9. The adaptor of claim 8, wherein: the conversion circuit (35) comprises a triode, the base electrode of the triode is connected with the discharge signal receiving terminal (33), and the collector electrode of the triode is connected with the discharge signal output terminal (34).
10. The adaptor of claim 8, wherein: the conversion circuit (35) comprises a field effect transistor (36), the grid electrode of the field effect transistor is connected with the discharge signal receiving terminal (33), and the drain electrode of the field effect transistor is connected with the discharge signal output terminal (34).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682134.7U CN212343355U (en) | 2020-04-28 | 2020-04-28 | Adapter and battery pack discharging system |
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| CN202020682134.7U CN212343355U (en) | 2020-04-28 | 2020-04-28 | Adapter and battery pack discharging system |
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| CN212343355U true CN212343355U (en) | 2021-01-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022262767A1 (en) * | 2021-06-16 | 2022-12-22 | 苏州宝时得电动工具有限公司 | Power tool system |
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- 2020-04-28 CN CN202020682134.7U patent/CN212343355U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022262767A1 (en) * | 2021-06-16 | 2022-12-22 | 苏州宝时得电动工具有限公司 | Power tool system |
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