CN214227886U - Battery protection circuit, battery device, booster and boosting system - Google Patents
Battery protection circuit, battery device, booster and boosting system Download PDFInfo
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- CN214227886U CN214227886U CN202023062716.4U CN202023062716U CN214227886U CN 214227886 U CN214227886 U CN 214227886U CN 202023062716 U CN202023062716 U CN 202023062716U CN 214227886 U CN214227886 U CN 214227886U
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Abstract
The application relates to a battery protection circuit, a battery device, a booster and a boosting system; the battery protection circuit comprises a protection chip, a discharge driving circuit, a charge driving circuit and an inductive switch; the first end of the protection chip is connected with the first end of the discharge driving circuit, the second end of the protection chip is connected with the first end of the charge driving circuit, and the third end of the protection chip is used for being connected with the first end of the battery cell; the second end of the discharge driving circuit is connected with the second end of the charge driving circuit, the third end of the discharge driving circuit is connected with the first end of the induction switch, and the fourth end of the discharge driving circuit is used for the second end of the battery cell; the third end of the charging driving circuit is used as a first electric energy input and output end; the second end of the inductive switch is used for being connected with the third end of the battery cell; the inductive switch is used for switching on the inductive switch to start the battery cell to supply power to the external equipment through the first electric energy input and output end and the second electric energy input and output end when sensing the corresponding driving signal, so that the self-discharge phenomenon caused by the existence of a conductive medium (such as non-purified water) around the battery cell is avoided.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery protection circuit, a battery device, a booster and a boosting system.
Background
With the continuous development of the technology, a large number of electronic products capable of being used in water are emerging continuously (for example, underwater boosters), in order to enable the electronic products to be used normally in water, a waterproof design needs to be made for the electronic products, particularly, the waterproof design needs to be made for electric structures such as circuits and batteries in the electronic products, for example, batteries without the waterproof design are placed in water, and due to the conductivity of water, the batteries are self-discharged, so that the positive and negative electrode connectors of the batteries are subjected to electrolytic heating deformation, and the batteries are subjected to short circuit explosion more seriously, therefore, in the implementation process, the inventor finds that at least the following problems exist in the conventional technology: traditional battery technology cannot be waterproof.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a battery protection circuit, a battery device, a booster and a boosting system for solving the problem that the conventional battery technology cannot prevent water.
In order to achieve the above object, in one aspect, an embodiment of the present application provides a battery protection circuit, which includes a protection chip, a discharge driving circuit, a charge driving circuit, and an inductive switch;
the first end of the protection chip is connected with the first end of the discharge driving circuit, the second end of the protection chip is connected with the first end of the charge driving circuit, and the third end of the protection chip is used for being connected with the first end of the battery cell;
the second end of the discharge driving circuit is connected with the second end of the charge driving circuit, the third end of the discharge driving circuit is connected with the first end of the induction switch, and the fourth end of the discharge driving circuit is used for connecting the second end of the battery cell; the third end of the charging driving circuit is used as a first electric energy input and output end;
the second end of the inductive switch is used for being connected with the third end of the battery cell and is used as a second electric energy input and output end;
the inductive switch is used for switching on the battery cell to supply power to the external equipment through the first electric energy input and output end and the second electric energy input and output end when sensing the corresponding driving signal.
In one embodiment, the temperature protection circuit is further included;
the temperature protection circuit is connected with the fourth end of the protection chip.
In one embodiment, the device further comprises a current detection circuit;
the first end of the current detection circuit is connected with the fourth end of the discharge driving circuit, and the second end of the current detection circuit is connected with the fifth end of the protection chip; the second end of the current detection circuit is also used for being connected with the second end of the battery core.
In one embodiment, the device further comprises a fuse;
the first end of fuse is connected the third end of drive circuit that charges, and the second end is used for as first electric energy input/output end.
In one embodiment, the system further comprises a power supply module; the first end of the power supply module is connected with the second end of the inductive switch, and the second end is used for being connected with the third end of the battery core and used as a second electric energy input and output end.
In one embodiment, the inductive switch is a hall switch.
On the other hand, the embodiment of the application also provides a battery device, which comprises the battery protection circuit and a battery core;
the first end of the battery cell is connected with the third end of the protection chip, the second end of the battery cell is connected with the fourth end of the discharge driving circuit, and the third end of the battery cell is connected with the second end of the induction switch; and the third end of the battery cell is used as a second electric energy input and output end.
In another aspect, an embodiment of the present application further provides a booster, including a booster body and a signal applying device;
the signal applying device is arranged in a battery jar of the booster body;
the signal applying device is used for releasing the driving signal to the inductive switch in the battery device so as to close the inductive switch.
In one embodiment, the signal applying means is an electromagnet.
In another aspect, an embodiment of the present application further provides a boosting system, including the above battery device; the booster is also included;
the battery device is arranged in a battery groove of a booster body of the booster.
One of the above technical solutions has the following advantages and beneficial effects:
the battery protection circuit provided by each embodiment of the application comprises a protection chip, a discharge driving circuit, a charge driving circuit and an inductive switch, wherein specifically, a first end of the protection chip is connected with a first end of the discharge driving circuit, a second end of the protection chip is connected with a first end of the charge driving circuit, and a third end of the protection chip is used for being connected with a first end of a battery core; the second end of the discharge driving circuit is connected with the second end of the charge driving circuit, the third end of the discharge driving circuit is connected with the first end of the induction switch, and the fourth end of the discharge driving circuit is used for the second end of the battery cell; the third end of the charging driving circuit is used as a first electric energy input and output end; the second end of the inductive switch is used for being connected with the third end of the battery cell and is used as a second electric energy input and output end; wherein, inductive switch is used for when sensing corresponding drive signal, and inductive switch is closed in order to start electric core and supply power to external equipment through first electric energy input and output end and second electric energy input and output end to the realization is only sensing drive signal at inductive switch, and battery protection circuit just starts the electric core and discharges to external equipment, avoids the self discharge phenomenon because of having conductive medium (for example, non-pure water) to appear around the electric core, and then guarantees the safety of discharging of electric core.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments of the application, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the subject matter of the present application.
FIG. 1 is a schematic diagram of a first configuration of a battery protection circuit according to an embodiment;
FIG. 2 is a diagram illustrating a second configuration of a battery protection circuit according to an embodiment;
FIG. 3 is a diagram illustrating a third exemplary embodiment of a battery protection circuit;
FIG. 4 is a diagram illustrating a fourth configuration of a battery protection circuit according to an embodiment;
FIG. 5 is a fifth schematic diagram of an embodiment of a battery protection circuit;
FIG. 6 is a diagram illustrating a sixth configuration of a battery protection circuit according to an embodiment;
fig. 7 is a schematic structural view of the booster in one embodiment.
Description of reference numerals:
10. the protection circuit comprises a battery protection circuit, 11, a protection chip, 13, a discharge driving circuit, 15, a charge driving circuit, 17, an induction switch, 19, an electric core, 21, a first electric energy input and output end, 23, a second electric energy input and output end, 25, a temperature protection circuit, 27, a current detection circuit, 29, a fuse, 31, a power supply module, 33, a booster body, 35 and a signal applying device.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "first end," "second end," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to solve the problem that the conventional battery technology cannot prevent water, in one embodiment, as shown in fig. 1, a battery protection circuit is provided, which includes a protection chip 11, a discharge driving circuit 13, a charge driving circuit 15, and an inductive switch 17;
a first end of the protection chip 11 is connected to a first end of the discharge driving circuit 13, a second end is connected to a first end of the charge driving circuit 15, and a third end is used for connecting to a first end of the battery cell 19;
a second end of the discharge driving circuit 13 is connected to a second end of the charge driving circuit 15, a third end is connected to a first end of the inductive switch 17, and a fourth end is used for connecting to a second end of the battery cell 19; the third end of the charging driving circuit 15 is used as a first power input/output end 21;
the second end of the inductive switch 17 is used for connecting the third end of the battery cell 19 and is used as a second electric energy input and output end 23;
the inductive switch 17 is configured to close the inductive switch 17 to start the battery cell 19 to supply power to the external device through the first power input/output end 21 and the second power input/output end 23 when a corresponding driving signal is sensed.
It should be noted that the protection chip 11 provides protection for the situations of overcharge, overdischarge, short circuit, etc. of the battery cell 19, and ensures the safety of charge and discharge of the battery cell 19. Specifically, the protection chip 11 may be any type of battery protection chip 11 in the conventional art.
The discharge driving circuit 13 is used for driving a discharge process of the battery cell 19, and in one example, the discharge driving circuit 13 is a MOS (Metal-Oxide-Semiconductor Field-Effect Transistor) tube discharge driving circuit 13. The charge driving circuit 15 is used for driving a charging process of the battery cell 19, and in one example, the charge driving circuit 15 is a MOS transistor charge driving circuit 15.
The inductive switch 17 is a normally open switch, and when a corresponding driving signal is sensed, the inductive switch 17 closes a discharge path of the battery cell 19. In one example, the inductive switch 17 is an infrared inductive switch 17 and the driving signal is an infrared signal. In another example, the inductive switch 17 is a microwave inductive switch 17 and the drive signal is a microwave signal. In yet another example, the inductive switch 17 is a piezoelectric inductive switch 17 and the drive signal is a pressure signal. In yet another example, the inductive switch 17 is a hall switch and the drive signal is an electromagnetic signal.
In order to avoid the unsafe problem caused by the over-temperature of the battery protection circuit or the battery cell 19 during the charging process of the battery cell 19, in one embodiment, as shown in fig. 2, the battery protection circuit of the present application further includes a temperature protection circuit 25; the temperature protection circuit 25 is connected to the fourth terminal of the protection chip 11. In one example, the temperature protection circuit 25 collects the ambient temperature, and when the ambient temperature exceeds a temperature threshold set in a period, the temperature protection circuit 25 wants to protect the chip 11 to send an over-temperature signal, and the protection chip 11 stops the discharging process through the discharging driving circuit 13 or stops the charging process through the charging driving circuit 15 under the control of the over-temperature signal, in which case, the temperature protection circuit 25 may include a temperature sensor and a comparison circuit. In another example, the temperature protection circuit 25 collects the ambient temperature and transmits the ambient temperature to the protection chip 11, and when the protection chip 11 determines that the ambient temperature exceeds the temperature threshold set therein, the discharging process is stopped by the discharging driving circuit 13 or the charging process is stopped by the charging driving circuit 15, in this example, the temperature protection circuit 25 may be a temperature sensor.
In order to avoid the current flowing through the protection chip 11 too large to damage the protection chip 11, in one embodiment, as shown in fig. 3, the battery protection circuit of the present application further includes a current detection circuit 27; a first end of the current detection circuit 27 is connected to the fourth end of the discharge driving circuit 13, and a second end is connected to the fifth end of the protection chip 11; the second end of the current detection circuit 27 is also used for connecting the second end of the battery cell 19. The protection chip 11 detects whether the current flowing through the protection chip 11 exceeds a current threshold value through the current detection circuit 27, and when the current exceeds the current threshold value, the protection chip 11 stops the discharging process through the discharging drive circuit 13 or stops the charging process through the charging drive circuit 15. In one example, the current detection circuit 27 is a current detection resistor.
To further protect the battery protection circuit from overload conditions, and to provide secondary overload protection, in one embodiment, as shown in fig. 4, the battery protection circuit of the present application further includes a fuse 29; the first terminal of the fuse 29 is connected to the third terminal of the charging driving circuit 15, and the second terminal is used as the first power input/output terminal 21. The fuse 29 activates secondary protection when primary overload protection fails in the battery protection circuit.
In order to ensure that the power supply of the inductive switch 17 is normal, and to ensure that the discharge process of the battery cell 19 can be started normally through the inductive switch 17, in an embodiment, as shown in fig. 5, the battery protection circuit of the present application further includes a power module 31; the first end of the power module 31 is connected to the second end of the inductive switch 17, and the second end is used for connecting to the third end of the battery cell 19 and is used as the second power input/output end 23. The power module 31 is used for supplying power to the inductive switch 17, so as to ensure the electric energy during the operation.
In each embodiment of the battery protection circuit of the present application, the battery protection circuit includes a protection chip 11, a discharge driving circuit 13, a charge driving circuit 15, and an inductive switch 17, specifically, a first end of the protection chip 11 is connected to a first end of the discharge driving circuit 13, a second end is connected to a first end of the charge driving circuit 15, and a third end is used for connecting to a first end of a battery cell 19; a second end of the discharge driving circuit 13 is connected to a second end of the charge driving circuit 15, a third end is connected to a first end of the inductive switch 17, and a fourth end is used for a second end of the battery cell 19; the third end of the charging driving circuit 15 is used as a first power input/output end 21; the second end of the inductive switch 17 is used for connecting the third end of the battery cell 19 and is used as a second electric energy input and output end 23; wherein, inductive switch 17 is used for when sensing corresponding drive signal, inductive switch 17 is closed in order to start electric core 19 and supply power to external equipment through first electric energy input and output end 21 and second electric energy input and output end 23, thereby realize only sensing drive signal at inductive switch 17, battery protection circuit just starts electric core 19 and discharges to external equipment, avoid electric core 19 around because of the self discharge phenomenon that has conductive medium (for example, non-pure water) to appear, and then guarantee electric core 19's the safety of discharging.
In an embodiment, as shown in fig. 6, an embodiment of the present application further provides a battery device, including the battery protection circuit 10 and the battery cell 19 described in each embodiment of the battery protection circuit of the present application;
the first end of the battery cell 19 is connected with the third end of the protection chip 11, the second end is connected with the fourth end of the discharge driving circuit 13, and the third end is connected with the second end of the inductive switch 17; and a third end of the battery cell 19 is used as a second electric energy input and output end 23.
It should be noted that the battery protection circuit 10 described in this embodiment is the same as the battery protection circuit 10 described in each embodiment of the battery protection circuit 10 of this application, and for the specific description, reference is made to the content described in each embodiment of the battery protection circuit 10 of this application, and details are not repeated here.
The cell 19 is used for storing electric energy, and in one example, the cell 19 may be an aluminum-clad cell 19, a soft-packed cell 19, or a cylindrical cell 19. Further, the battery device further includes a casing, the battery protection circuit 10 and the battery cell 19 are sealed in the casing, and the first electric energy input and output end 21 and the second electric energy input and output end 23 are led out to be used as a conductive positive electrode and a conductive negative electrode.
In each embodiment of the battery device, the battery device is filled with the conductive medium (for example, non-purified water) around, so that the self-discharge phenomenon cannot occur, and the battery device is only conducted and discharged when the inductive switch 17 is closed by induction, thereby ensuring the use safety of the battery device and having good waterproof performance.
In one embodiment, as shown in fig. 7, there is also provided a booster comprising a booster body 33 and a signal applying means 35;
the signal applying device 35 is mounted in a battery case of the booster body 33;
the signal applying means 35 is used to release the driving signal to the inductive switch 17 in the battery device so that the inductive switch 17 is closed.
The booster body 33 is any type of booster in the conventional art, and only the shape and structure of the battery device in the present application need be adjusted adaptively.
The signal applying means 35 is used to release the driving signal to the inductive switch 17 in the battery protection circuit of the present application. The signal applying device 35 and the inductive switch 17 are corresponding to each other, for example, when the inductive switch 17 is an infrared inductive switch 17, the signal applying device 35 is an infrared device; when the inductive switch 17 is a microwave inductive switch 17, the signal applying device 35 is a microwave device; when the inductive switch 17 is a piezoelectric inductive switch 17, the signal applying device 35 is a bump device; when the inductive switch 17 is a hall switch, the signal applying device 35 is an electromagnet.
Further, after the electromagnetic device is installed in the battery jar of the booster body 33, the position of the signal applying device 35 in the battery jar corresponds to the position of the inductive switch 17 in the battery device, so that the inductive switch 17 can directly sense the driving signal.
In each embodiment of the booster, the signal applying device 35 is installed in the booster, and can provide a driving signal for the inductive switch 17 in the battery device to match with the discharging of the battery device, so as to avoid the battery explosion accident caused by the self-discharging phenomenon of the battery device under water.
In one embodiment, a boosting system is also provided, which comprises the battery device according to the embodiments of the battery device; the booster of the embodiments of the booster is also included;
the battery device is mounted in a battery case of the booster body 33 of the booster.
It should be noted that the battery device described in this embodiment is the same as the battery device described in each embodiment of the battery device of this application, and for the specific description, reference is made to the content described in each embodiment of the battery device of this application, and details are not repeated here. The booster described in this embodiment is the same as the booster described in the embodiments of the booster of this application, and for the specific description, please refer to the content recorded in the embodiments of the booster of this application, which is not described herein again.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A battery protection circuit is characterized by comprising a protection chip, a discharge driving circuit, a charge driving circuit and an inductive switch;
the first end of the protection chip is connected with the first end of the discharge driving circuit, the second end of the protection chip is connected with the first end of the charge driving circuit, and the third end of the protection chip is used for being connected with the first end of the battery cell;
the second end of the discharge driving circuit is connected with the second end of the charge driving circuit, the third end of the discharge driving circuit is connected with the first end of the induction switch, and the fourth end of the discharge driving circuit is used for connecting the second end of the battery cell; the third end of the charging driving circuit is used as a first electric energy input and output end;
the second end of the inductive switch is used for being connected with the third end of the battery cell and is used as a second electric energy input and output end;
the inductive switch is used for switching on the inductive switch to start the battery cell to supply power to external equipment through the first electric energy input and output end and the second electric energy input and output end when the corresponding driving signal is sensed.
2. The battery protection circuit of claim 1, further comprising a temperature protection circuit;
the temperature protection circuit is connected with the fourth end of the protection chip.
3. The battery protection circuit of claim 1, further comprising a current sensing circuit;
the first end of the current detection circuit is connected with the fourth end of the discharge driving circuit, and the second end of the current detection circuit is connected with the fifth end of the protection chip; the second end of the current detection circuit is also used for being connected with the second end of the battery core.
4. The battery protection circuit of claim 1, further comprising a fuse;
the first end of fuse is connected charge drive circuit's third end, the second end is used for as first electric energy input/output terminal.
5. The battery protection circuit of claim 1, further comprising a power module; the first end of the power supply module is connected with the second end of the inductive switch, and the second end of the power supply module is used for being connected with the third end of the battery cell and used as the second electric energy input and output end.
6. The battery protection circuit of any of claims 1-5, wherein the inductive switch is a Hall switch.
7. A battery device, comprising the battery protection circuit of any one of claims 1 to 6 and a battery cell;
the first end of the battery cell is connected with the third end of the protection chip, the second end of the battery cell is connected with the fourth end of the discharge driving circuit, and the third end of the battery cell is connected with the second end of the inductive switch; and the third end of the battery cell is used as the second electric energy input and output end.
8. A booster is characterized by comprising a booster body and a signal applying device;
the signal applying device is arranged in a battery jar of the booster body;
the signal applying device is used for releasing a driving signal to an inductive switch in the battery device so as to close the inductive switch.
9. The booster of claim 8, wherein the signal applying means is an electromagnet.
10. A boosting system comprising the battery device according to claim 7; further comprising the booster of claim 8 or 9;
the battery device is installed in a battery groove of a booster body of the booster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023062716.4U CN214227886U (en) | 2020-12-18 | 2020-12-18 | Battery protection circuit, battery device, booster and boosting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023062716.4U CN214227886U (en) | 2020-12-18 | 2020-12-18 | Battery protection circuit, battery device, booster and boosting system |
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| Publication Number | Publication Date |
|---|---|
| CN214227886U true CN214227886U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023062716.4U Active CN214227886U (en) | 2020-12-18 | 2020-12-18 | Battery protection circuit, battery device, booster and boosting system |
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| CN (1) | CN214227886U (en) |
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