CN109995109A - A kind of battery connection circuitry and its application apparatus - Google Patents
A kind of battery connection circuitry and its application apparatus Download PDFInfo
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- CN109995109A CN109995109A CN201910251822.XA CN201910251822A CN109995109A CN 109995109 A CN109995109 A CN 109995109A CN 201910251822 A CN201910251822 A CN 201910251822A CN 109995109 A CN109995109 A CN 109995109A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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Abstract
This application involves a kind of battery connection circuitry and its application apparatus, the circuit includes: the first polar end, the second polar end, positive terminal, negative pole end, the first conversion circuit and the second conversion circuit, when first one way conducting device and the third one way conducting device in the conductive state, second one way conducting device and the 4th one way conducting device are in off state；When second one way conducting device and the 4th one way conducting device in the conductive state, first one way conducting device and the third one way conducting device are in off state.After the adjusting of above-mentioned battery connection circuitry, it can guarantee that the positive terminal output of battery connection circuitry is positive always, negative pole end output is negative always, alleviates battery plus-negative plate existing in the prior art and the unmatched problem of equipment.
Description
Technical Field
The application relates to the field of equipment application, in particular to a battery connecting circuit and application equipment thereof.
Background
In recent years, the appearance of smart phones greatly facilitates the lives of the public, and with the development and innovation of scientific technology, the smart phones have more and more functions and more extensive application fields.
In the circuit design of the mobile phone, the bottleneck of the mobile phone battery still delays the development of the smart phone in other directions. At present, after a battery of a smart phone is used for about one year, the use loss of the battery becomes more and more serious, the service life of the battery becomes shorter and shorter, and a plurality of users can choose to replace the battery again to obtain better use experience of the mobile phone.
Generally, the specifications of the positive and negative electrodes of batteries designed by different manufacturers are different, for example, the positive and negative electrodes of the batteries of some manufacturers are designed to be positive left and negative right, and the positive and negative electrodes of some manufacturers are designed to be positive left and negative right. If a user buys and replaces batteries by himself, batteries with positive and negative electrode designs not matched with the positive and negative polarities of the battery slot interface of the mobile phone can be bought, and when the batteries are buckled on the mobile phone, short-circuit heavy current can be caused, so that a mobile phone mainboard is burnt out, and irreparable loss is caused.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the application provides a battery connection circuit and an application device thereof.
In a first aspect, an embodiment of the present application provides a battery connection circuit, including: the circuit comprises a first polarity end, a second polarity end, a positive electrode end, a negative electrode end, a first conversion circuit and a second conversion circuit;
the first conversion circuit includes:
the input end of the first unidirectional conducting device is electrically connected with the first polarity end, the output end of the first unidirectional conducting device is electrically connected with the positive electrode end, and the control end of the first unidirectional conducting device is electrically connected with the second polarity end;
the input end of the second unidirectional conducting device is electrically connected with the second polarity end, the output end of the second unidirectional conducting device is electrically connected with the positive electrode end, and the control end of the second unidirectional conducting device is electrically connected with the first polarity end;
the second conversion circuit includes:
a third unidirectional conducting device, the input end of which is electrically connected with the second polarity end, the output end of which is electrically connected with the negative electrode end, and the control end of which is electrically connected with the first polarity end;
a fourth unidirectional conducting device, the input end of which is electrically connected with the first polarity end, the output end of which is electrically connected with the negative electrode end, and the control end of which is electrically connected with the second polarity end;
if the first unidirectional conducting device and the third unidirectional conducting device are conducted, the second unidirectional conducting device and the fourth unidirectional conducting device are cut off; if the second unidirectional conducting device and the fourth unidirectional conducting device are conducted, the first unidirectional conducting device and the third unidirectional conducting device are cut off.
Optionally, the first unidirectional conducting device comprises: a first P-type MOS transistor and a second P-type MOS transistor, wherein,
the drain electrode of the first P-type MOS tube is used as the input end, and the source electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube;
and the source level of the second P-type MOS tube is used as the output end, and the grids of the second P-type MOS tube and the first P-type MOS tube are used as the control ends.
Optionally, the first unidirectional conducting device further includes:
a first diode and a second diode, wherein,
the cathode of the first diode is electrically connected with the drain electrode of the first P-type MOS tube, and the anode of the first diode is electrically connected with the source electrode of the first P-type MOS tube;
the cathode of the second diode is electrically connected with the source electrode of the second P-type MOS tube, and the anode of the second diode is electrically connected with the drain electrode of the second P-type MOS tube.
Optionally, the second unidirectional conducting device comprises: a first P-type MOS transistor and a second P-type MOS transistor, wherein,
the drain electrode of the first P-type MOS tube is used as the input end, and the source electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube;
and the source level of the second P-type MOS tube is used as the output end, and the grids of the second P-type MOS tube and the first P-type MOS tube are used as the control ends.
Optionally, the second unidirectional conducting device further includes:
a first diode and a second diode, wherein,
the cathode of the first diode is electrically connected with the drain electrode of the first P-type MOS tube, and the anode of the first diode is electrically connected with the source electrode of the first P-type MOS tube;
the cathode of the second diode is electrically connected with the source electrode of the second P-type MOS tube, and the anode of the second diode is electrically connected with the drain electrode of the second P-type MOS tube.
Optionally, the third unidirectional conducting device comprises:
an N-type first MOS transistor and an N-type second MOS transistor, wherein,
the source electrode of the N-type first MOS tube is used as the input end, and the drain electrode of the N-type first MOS tube is electrically connected with the source electrode of the N-type second MOS tube;
and the drain of the N-type second MOS tube is used as the output end, and the grid electrodes of the N-type second MOS tube and the N-type first MOS tube are used as the control end.
Optionally, the third unidirectional conducting device further includes:
a third diode and a fourth diode, wherein,
the cathode of the third diode is electrically connected with the source electrode of the N-type first MOS tube, and the anode of the third diode is electrically connected with the drain electrode of the N-type first MOS tube;
the cathode of the fourth diode is electrically connected with the drain electrode of the N-type second MOS tube, and the anode of the fourth diode is electrically connected with the source electrode of the N-type second MOS tube.
Optionally, the fourth unidirectional conducting device comprises:
an N-type first MOS transistor and an N-type second MOS transistor, wherein,
the source electrode of the N-type first MOS tube is used as the input end, and the drain electrode of the N-type first MOS tube is electrically connected with the source electrode of the N-type second MOS tube;
and the drain of the N-type second MOS tube is used as the output end, and the grid electrodes of the N-type second MOS tube and the N-type first MOS tube are used as the control end.
Optionally, the third unidirectional conducting device further includes:
a third diode and a fourth diode, wherein,
the cathode of the third diode is electrically connected with the source electrode of the N-type first MOS tube, and the anode of the third diode is electrically connected with the drain electrode of the N-type first MOS tube;
the cathode of the fourth diode is electrically connected with the drain electrode of the N-type second MOS tube, and the anode of the fourth diode is electrically connected with the source electrode of the N-type second MOS tube.
In a second aspect, an embodiment of the present application provides an apparatus, including: a housing and a battery connecting circuit as described in the first aspect, wherein,
a battery compartment is arranged on the shell, and the first polarity end and the second polarity end in the battery connecting circuit are arranged in the battery compartment;
the positive terminal is electrically connected with a positive power supply terminal in the equipment;
the negative terminal is electrically connected with a negative power supply terminal in the device.
The battery connection circuit can adjust the voltage output polarity of the output end, when the first polarity input end is connected with a positive voltage and the second polarity input end is connected with a negative voltage, wherein,
the control end of the first one-way conduction device is negative voltage and meets the conduction condition, the input end of the first one-way conduction device is positive voltage, the output end of the first one-way conduction device outputs positive voltage, and at the moment, the control end of the second one-way conduction device is positive voltage and meets the cut-off condition;
the control end of the third one-way conduction device is positive voltage to meet the conduction condition, the input end of the third one-way conduction device is negative voltage, the output end of the third one-way conduction device outputs negative voltage, and at the moment, the control end of the fourth one-way conduction device is negative voltage to meet the cut-off condition.
Therefore, when the first polarity input end is connected with positive voltage and the second polarity input end is connected with negative voltage, the positive end output and the negative end output of the battery connecting circuit can be ensured to be positive and negative.
When the first polarity input terminal is connected with a negative voltage and the second polarity input terminal is connected with a positive voltage, wherein,
the control end of the second one-way conduction device is negative voltage and meets the conduction condition, the input end of the second one-way conduction device is positive voltage, the output end of the second one-way conduction device outputs positive voltage, and at the moment, the control end of the first one-way conduction device is positive voltage and meets the cut-off condition;
the control end of the fourth one-way conduction device is positive voltage to meet the conduction condition, the input end of the fourth one-way conduction device is negative voltage, the output end of the fourth one-way conduction device outputs negative voltage, and at the moment, the control end of the third one-way conduction device is negative voltage to meet the cut-off condition.
Therefore, when the first polarity input end is connected with the negative voltage and the second polarity input end is connected with the positive voltage, the output of the positive end of the battery connecting circuit can be ensured to be positive, and the output of the negative end of the battery connecting circuit can be ensured to be negative.
That is, no matter how the positive and negative polarities of the first polarity input end and the second polarity input end are connected, the output polarity of the final positive end is always positive, the output polarity of the negative end is always negative, the output of the positive and negative polarities of the battery connecting circuit is ensured to be always corresponding to the polarity required by the mobile phone battery, the positive and negative polarities of the battery produced by a manufacturer can be designed at will, and even if the battery with the positive and negative polarities inconsistent with the polarity of the mobile phone battery slot interface is installed on the mobile phone, the battery can normally supply power.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic diagram of a first battery connection circuit provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a second battery connection circuit provided in an embodiment of the present application;
fig. 3 is a schematic diagram of a third battery connection circuit provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a battery connecting circuit, is applied to the equipment of installation battery, battery connecting circuit can not distinguish the positive negative pole of battery, all can be to the positive input output positive voltage of equipment, and to the negative input output negative voltage of equipment.
Fig. 1 is a schematic diagram of a battery connection circuit according to an embodiment of the present disclosure, and a detailed description of the battery connection circuit according to the embodiment of the present disclosure is provided below with reference to fig. 1.
As shown in fig. 1, the battery connection circuit in the figure includes:
the circuit comprises a first polarity end A, a second polarity end B, a positive electrode end VBAT, a negative electrode end GND, a first conversion circuit 1 and a second conversion circuit 2.
In the first case, the first polarity terminal a is connected to a positive voltage signal, and the second polarity terminal B is connected to a negative voltage signal, and in the second case, the first polarity terminal a is connected to a negative voltage signal, and the second polarity terminal B is connected to a positive voltage signal. The first conversion circuit 1 realizes that the positive terminal VBAT always outputs positive voltage, and the second conversion circuit 2 realizes that the negative terminal GND always outputs negative voltage. Wherein,
the first unidirectional conducting device 11 includes: the circuit comprises an input end 111, a control end 112 and an output end 110, wherein the input end 111 is electrically connected with a first polarity end A, the control end 112 is electrically connected with a second polarity end B, and the output end 110 is electrically connected with a positive electrode end VBAT. The control terminal 112 of the first unidirectional conducting device 11 is turned on when a negative voltage is applied and turned off when a positive voltage is applied.
The second unidirectional conducting device 12 comprises: an input terminal 121, a control terminal 121, and an output terminal 120, wherein the input terminal 121 is electrically connected to the second polarity terminal B, the control terminal 122 is electrically connected to the first polarity terminal a, and the output terminal 120 is electrically connected to the positive terminal VBAT. The control terminal 122 of the second unidirectional conducting device 12 is turned on when being connected with a negative voltage, and is turned off when being connected with a positive voltage.
The third unidirectional conducting device 23 includes: an input terminal 231, a control terminal 232, and an output terminal 230, wherein the input terminal 231 is electrically connected to the second polarity terminal B, the control terminal 232 is electrically connected to the first polarity terminal a, and the output terminal 230 is electrically connected to the negative terminal GND. The control terminal 232 of the third unidirectional conducting device 23 is turned on when being connected with a positive voltage and is turned off when being connected with a negative voltage.
The fourth unidirectional conducting device 24 includes: an input terminal 241, a control terminal 242, and an output terminal 240, wherein the input terminal 241 is electrically connected to the first polarity terminal a, the control terminal 242 is electrically connected to the second polarity terminal B, and the output terminal 240 is electrically connected to the negative terminal GND. The control terminal 242 of the fourth unidirectional conducting device 24 is turned on when a positive voltage is applied thereto, and turned off when a negative voltage is applied thereto.
When the battery connecting circuit is applied to equipment, the positions of the positive and negative electrode leads of the battery of the equipment are usually fixed, and then the positions of the first polarity end and the second polarity end can be set to be fixed. In the first case, after the battery is installed, the positive electrode of the battery is connected with the first polarity end, and the negative electrode of the battery is connected with the second polarity end; in the second case, the negative electrode of the battery is connected to the first polarity terminal and the positive electrode is connected to the second polarity terminal.
For the first case, when the first polarity terminal a is connected to a positive voltage, the second polarity terminal B is connected to a negative voltage. At this time, the process of the present invention,
the input end 111 of the first unidirectional conducting device 11 is a positive voltage, the control end 112 is a negative voltage, and the first unidirectional conducting device 11 is conducted, and when the first unidirectional conducting device 11 is conducted, the output end 110 outputs a positive voltage.
The input terminal 121 of the second unidirectional conducting device 12 is a negative voltage, the control terminal 122 is a positive voltage, and the second unidirectional conducting device 12 is turned off;
the input 231 of the third unidirectional conducting device 23 is a negative voltage, the control terminal 232 is a positive voltage, and the third unidirectional conducting device 23 is turned on, and when the third unidirectional conducting device 23 is turned on, the output terminal 230 outputs a negative voltage.
The third one-way conduction device 24 has a positive voltage at the input terminal 241, a negative voltage at the control terminal 242, and the fourth one-way conduction device 24 is turned off.
From the above description, referring to fig. 1, in the first case, the positive terminal VBAT output voltage is positive, and the negative terminal GND output voltage is negative. Therefore, when the positive electrode of the device is connected to the positive terminal VBAT and the negative electrode of the device is connected to the negative terminal GND, the device can be normally powered.
For the second case, when the first polarity terminal a is connected to a negative voltage, the second polarity terminal B is connected to a positive voltage. At this time, the process of the present invention,
the input 111 of the first unidirectional conducting device 11 is a negative voltage, the control terminal 112 is a positive voltage, and the first unidirectional conducting device 11 is turned off.
The input end 121 of the second unidirectional conducting device 12 is a positive voltage, the control end 122 is a negative voltage, and then the second unidirectional conducting device 12 is conducted, when the second unidirectional conducting device 12 is conducted, the output end 120 outputs a positive voltage;
the input 231 of the third unidirectional conducting device 23 is a positive voltage, the control terminal 232 is a negative voltage, and the third unidirectional conducting device 23 is turned off.
The input terminal 241 of the fourth unidirectional conducting device 24 is a negative voltage, the control terminal 242 is a positive voltage, and the fourth unidirectional conducting device 24 is turned on, and when the fourth unidirectional conducting device 24 is turned on, the output terminal 240 outputs a negative voltage.
From the above description, in conjunction with fig. 1, in the second case, the positive terminal VBAT output voltage is positive, and the negative terminal GND output voltage is negative. Therefore, when the positive electrode of the device is connected to the positive terminal VBAT and the negative electrode of the device is connected to the negative terminal GND, the device can be normally powered.
In the embodiment shown in fig. 1 of the present application, the one-way conduction device is not limited in its internal structure or type as long as it satisfies its respective functions, and in still another embodiment of the present application, as shown in fig. 2,
the first unidirectional conducting device comprises: the first P-type MOS transistor P0, the second P-type MOS transistor P1, the first diode D0 and the second diode D1;
the gates of the first P-type MOS transistor P0 and the second P-type MOS transistor P1 are used as the control terminal 112, the drain of the first P-type MOS transistor P0 is used as the input terminal 111, the source of the first P-type MOS transistor P0 is electrically connected to the drain of the second P-type MOS transistor P1, and the source of the second P-type MOS transistor P1 is used as the output terminal 110.
The cathode of the first diode D0 is electrically connected with the drain of the first P-type MOS transistor P0, the anode of the first diode D0 is electrically connected with the source of the first P-type MOS transistor P0, the cathode of the second diode D1 is electrically connected with the source of the second P-type MOS transistor P1, and the anode of the second diode D1 is electrically connected with the drain of the second P-type MOS transistor P1.
The second unidirectional conducting device comprises: the first P-type MOS transistor P2, the second P-type MOS transistor P3, the first diode D2 and the second diode D3;
the gates of the first P-type MOS transistor P2 and the second P-type MOS transistor P3 are used as the control terminal 122, the drain of the first P-type MOS transistor P2 is used as the input terminal 121, the source of the first P-type MOS transistor P2 is electrically connected to the drain of the second P-type MOS transistor P3, and the source of the second P-type MOS transistor P3 is used as the output terminal 120.
The cathode of the first diode D2 is electrically connected with the drain of the first P-type MOS transistor P2, the anode of the first diode D2 is electrically connected with the source of the first P-type MOS transistor P2, the cathode of the second diode D3 is electrically connected with the source of the second P-type MOS transistor P3, and the anode of the second diode D3 is electrically connected with the drain of the second P-type MOS transistor P3.
The third unidirectional conducting device comprises: a first N-type MOS transistor N0, a second N-type MOS transistor N1, a third diode D4, and a fourth diode D5;
the gates of the third N-type MOS transistor N0 and the fourth N-type MOS transistor N1 are used as the control terminal 232, the source of the first N-type MOS transistor N0 is used as the input terminal 231, the source of the first N-type MOS transistor N0 is electrically connected to the drain of the second N-type MOS transistor N1, and the drain of the second N-type MOS transistor N1 is used as the output terminal 230.
The cathode of the third diode D4 is electrically connected to the source of the first N-type MOS transistor N0, the anode of the third diode D4 is electrically connected to the drain of the first N-type MOS transistor N0, the cathode of the fourth diode D5 is electrically connected to the drain of the second N-type MOS transistor N1, and the anode of the fourth diode D5 is electrically connected to the source of the second N-type MOS transistor N1.
The fourth unidirectional conducting device includes: a first N-type MOS transistor N2, a second N-type MOS transistor N3, a third diode D6, and a fourth diode D7.
The gates of the first N-type MOS transistor N2 and the second N-type MOS transistor N3 are used as the control terminal 242, the source of the first N-type MOS transistor N2 is used as the input terminal 241, the drain of the first N-type MOS transistor N2 is electrically connected to the source of the second N-type MOS transistor N3, and the drain of the second N-type MOS transistor N3 is used as the output terminal 240.
The cathode of the third diode D6 is electrically connected to the source of the first N-type MOS transistor N2, the anode of the third diode D6 is electrically connected to the drain of the first N-type MOS transistor N2, the cathode of the fourth diode D7 is electrically connected to the drain of the second N-type MOS transistor N3, and the anode of the fourth diode D7 is electrically connected to the source of the second N-type MOS transistor N3.
In the first case, when the first polarity terminal A is connected with a positive voltage, the second polarity terminal B is connected with a negative voltage,
the drain electrode of the first P-type MOS transistor P0 is electrically connected with a first polarity end A of positive voltage, the grid electrode of the first P-type MOS transistor P0 and the grid electrode of the second P-type MOS transistor P1 are electrically connected with a second polarity end B of negative voltage, furthermore, the first P-type MOS transistor P0 and the second P-type MOS transistor P1 are conducted, and when the first P-type MOS transistor P0 and the second P-type MOS transistor P1 are conducted, the source electrode of the second P-type MOS transistor P1 outputs positive voltage;
the drain of the first P-type MOS transistor P2 is electrically connected to the second polarity end B of the negative voltage, the gate of the first P-type MOS transistor P2 and the gate of the second P-type MOS transistor P3 are electrically connected to the first polarity end a of the positive voltage, and further the first P-type MOS transistor P2 and the second P-type MOS transistor P3 are turned off;
the source electrode of the third N-type MOS transistor N0 is electrically connected to the second polarity terminal B of the negative voltage, the gate electrode of the third N-type MOS transistor N0 and the gate electrode of the fourth N-type MOS transistor N1 are electrically connected to the first polarity terminal a of the positive voltage, the third N-type MOS transistor N0 and the fourth N-type MOS transistor N1 are turned on, and when the third N-type MOS transistor N0 and the fourth N-type MOS transistor N1 are turned on, the drain electrode of the third N-type MOS transistor N1 outputs the negative voltage;
the source of the third N-type MOS transistor N2 is electrically connected to the first polarity terminal a of the positive voltage, the gate of the third N-type MOS transistor N2 and the gate of the fourth N-type MOS transistor N3 are electrically connected to the first polarity terminal a of the positive voltage, and further, the third N-type MOS transistor N2 and the fourth N-type MOS transistor N3 are turned off.
From the above description, referring to fig. 2, in the first case, the positive terminal VBAT output voltage is positive, and the negative terminal GND output voltage is negative. Therefore, when the positive electrode of the device is connected to the positive terminal VBAT and the negative electrode of the device is connected to the negative terminal GND, the device can be normally powered.
In addition, at this time, the positive terminal VBAT is a positive voltage, the control terminal of the first conversion circuit is a negative voltage, and the first diode D2 plays a role in preventing the risk of earth leakage caused by the conduction of the positive terminal VBAT through the second diode D3; the first polarity terminal a is a positive voltage, the negative terminal GND is a negative voltage, and the fourth diode D7 functions to prevent the risk of earth leakage caused by the conduction of the first polarity terminal a through the third diode D6.
In the second situation, when the first polarity terminal A is connected with a negative voltage, the second polarity terminal B is connected with a positive voltage,
the drain electrode of the first P-type MOS transistor P0 is electrically connected with the first polarity end A of the negative voltage, the grid electrode of the first P-type MOS transistor P0 and the grid electrode of the second P-type MOS transistor P1 are electrically connected with the second polarity end B of the positive voltage, and further the first P-type MOS transistor P0 and the second P-type MOS transistor P1 are cut off;
the drain of the first P-type MOS transistor P2 is electrically connected to the second polarity terminal B of the positive voltage, the gate of the first P-type MOS transistor P2 and the gate of the second P-type MOS transistor P3 are electrically connected to the first polarity terminal a of the negative voltage, the first P-type MOS transistor P2 and the second P-type MOS transistor P3 are turned on, and when the first P-type MOS transistor P2 and the second P-type MOS transistor P3 are turned on, the source of the second P-type MOS transistor P3 outputs the positive voltage.
The source electrode of the third N-type MOS transistor N0 is electrically connected to the second polarity end B of the positive voltage, the gate electrode of the third N-type MOS transistor N0 and the gate electrode of the fourth N-type MOS transistor N1 are electrically connected to the first polarity end a of the negative voltage, and further, the third N-type MOS transistor N0 and the fourth N-type MOS transistor N1 are turned off;
the source of the third N-type MOS transistor N2 is electrically connected to the first polarity terminal a of the negative voltage, the gate of the third N-type MOS transistor N2 and the gate of the fourth N-type MOS transistor N3 are electrically connected to the second polarity terminal B of the positive voltage, the third N-type MOS transistor N2 and the fourth N-type MOS transistor N3 are turned on, and the drain of the fourth N-type MOS transistor N3 outputs the negative voltage.
From the above description, in conjunction with fig. 2, in the second case, the positive terminal VBAT output voltage is positive and the negative terminal GND output voltage is negative. Therefore, when the positive electrode of the device is connected to the positive terminal VBAT and the negative electrode of the device is connected to the negative terminal GND, the device can be normally powered.
In addition, at this time, the positive terminal VBAT is a positive voltage, the first polarity terminal a is a negative voltage, and the first diode D0 plays a role in preventing the risk of earth leakage caused by the conduction of the positive terminal VBAT through the second diode D1; the second polarity terminal B is a positive voltage, the negative terminal GND is a negative voltage, and the fourth diode D5 functions to prevent the risk of earth leakage caused by the conduction of the second polarity terminal B through the third diode D4.
In yet another embodiment of the present application, an apparatus, comprising: a housing and a battery connecting circuit as in the first embodiment, wherein,
the shell is provided with a battery compartment for mounting a detachable battery, and the positions of positive and negative leads in the battery compartment are fixed from the production and use aspects.
In the embodiment of the present application, as shown in fig. 3, a first polarity end a and a second polarity end B in the battery connection circuit are disposed in the battery compartment as a positive connection end or a negative connection end of the battery;
the positive electrode end VBAT is electrically connected with a positive electrode power supply end C in the equipment;
the negative terminal GND is electrically connected to a negative supply terminal D in the device.
When the first output end 01 of the battery is positive voltage and the second output end 02 is negative voltage, the battery connection circuit is adjusted according to the first condition, so that the positive end VBAT outputs positive voltage and the negative end GND outputs negative voltage, further, the positive supply end C input in the device is positive voltage and the negative supply end D input is negative voltage.
When the first output end 01 of the battery is negative voltage and the second output end 02 is positive voltage, the battery connecting circuit is adjusted according to the second condition, so that the positive end VBAT outputs positive voltage and the negative end GND outputs negative voltage, further, the positive power supply end C input in the device is positive voltage, and the negative power supply end D input is negative voltage.
For the device, although different power supply conditions of the positive electrode and the negative electrode may be caused due to different models or specifications of the batteries, through the adjustment of the battery connection circuit, a user can select the battery with the positive electrode and the negative electrode positions opposite to the positive electrode and the negative electrode positions of the device, regardless of how the positive electrode and the negative electrode of the battery are correspondingly connected with the device, as long as the spatial positions correspond to the first polarity end and the second polarity end.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A battery connection circuit, comprising: the circuit comprises a first polarity end, a second polarity end, a positive electrode end, a negative electrode end, a first conversion circuit and a second conversion circuit;
the first conversion circuit includes:
the input end of the first unidirectional conducting device is electrically connected with the first polarity end, the output end of the first unidirectional conducting device is electrically connected with the positive electrode end, and the control end of the first unidirectional conducting device is electrically connected with the second polarity end;
the input end of the second unidirectional conducting device is electrically connected with the second polarity end, the output end of the second unidirectional conducting device is electrically connected with the positive electrode end, and the control end of the second unidirectional conducting device is electrically connected with the first polarity end;
the second conversion circuit includes:
a third unidirectional conducting device, the input end of which is electrically connected with the second polarity end, the output end of which is electrically connected with the negative electrode end, and the control end of which is electrically connected with the first polarity end;
a fourth unidirectional conducting device, the input end of which is electrically connected with the first polarity end, the output end of which is electrically connected with the negative electrode end, and the control end of which is electrically connected with the second polarity end;
when the first unidirectional conducting device and the third unidirectional conducting device are in a conducting state, the second unidirectional conducting device and the fourth unidirectional conducting device are in a stopping state; when the second unidirectional conducting device and the fourth unidirectional conducting device are in a conducting state, the first unidirectional conducting device and the third unidirectional conducting device are in a cut-off state.
2. The battery connection circuit of claim 1, wherein the first unidirectional conducting device comprises: a first P-type MOS transistor and a second P-type MOS transistor, wherein,
the drain electrode of the first P-type MOS tube is used as the input end, and the source electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube;
and the source level of the second P-type MOS tube is used as the output end, and the grids of the second P-type MOS tube and the first P-type MOS tube are used as the control ends.
3. The battery connection circuit of claim 2, wherein the first unidirectional conducting device further comprises:
a first diode and a second diode, wherein,
the cathode of the first diode is electrically connected with the drain electrode of the first P-type MOS tube, and the anode of the first diode is electrically connected with the source electrode of the first P-type MOS tube;
the cathode of the second diode is electrically connected with the source electrode of the second P-type MOS tube, and the anode of the second diode is electrically connected with the drain electrode of the second P-type MOS tube.
4. The battery connection circuit of claim 1, wherein the second unidirectional conducting device comprises: a first P-type MOS transistor and a second P-type MOS transistor, wherein,
the drain electrode of the first P-type MOS tube is used as the input end, and the source electrode of the first P-type MOS tube is electrically connected with the drain electrode of the second P-type MOS tube;
and the source level of the second P-type MOS tube is used as the output end, and the grids of the second P-type MOS tube and the first P-type MOS tube are used as the control ends.
5. The battery connection circuit of claim 4, wherein the second unidirectional conducting device further comprises:
a first diode and a second diode, wherein,
the cathode of the first diode is electrically connected with the drain electrode of the first P-type MOS tube, and the anode of the first diode is electrically connected with the source electrode of the first P-type MOS tube;
the cathode of the second diode is electrically connected with the source electrode of the second P-type MOS tube, and the anode of the second diode is electrically connected with the drain electrode of the second P-type MOS tube.
6. The battery connection circuit of claim 1, wherein the third unidirectional conducting device comprises:
an N-type first MOS transistor and an N-type second MOS transistor, wherein,
the source electrode of the N-type first MOS tube is used as the input end, and the drain electrode of the N-type first MOS tube is electrically connected with the source electrode of the N-type second MOS tube;
and the drain of the N-type second MOS tube is used as the output end, and the grid electrodes of the N-type second MOS tube and the N-type first MOS tube are used as the control end.
7. The battery connection circuit of claim 6, wherein the third unidirectional conducting device further comprises:
a third diode and a fourth diode, wherein,
the cathode of the third diode is electrically connected with the source electrode of the N-type first MOS tube, and the anode of the third diode is electrically connected with the drain electrode of the N-type first MOS tube;
the cathode of the fourth diode is electrically connected with the drain electrode of the N-type second MOS tube, and the anode of the fourth diode is electrically connected with the source electrode of the N-type second MOS tube.
8. The battery connection circuit of claim 1, wherein the fourth unidirectional conducting device comprises:
an N-type first MOS transistor and an N-type second MOS transistor, wherein,
the source electrode of the N-type first MOS tube is used as the input end, and the drain electrode of the N-type first MOS tube is electrically connected with the source electrode of the N-type second MOS tube;
and the drain of the N-type second MOS tube is used as the output end, and the grid electrodes of the N-type second MOS tube and the N-type first MOS tube are used as the control end.
9. The battery connection circuit of claim 8, wherein the third unidirectional conducting device further comprises:
a third diode and a fourth diode, wherein,
the cathode of the third diode is electrically connected with the source electrode of the N-type first MOS tube, and the anode of the third diode is electrically connected with the drain electrode of the N-type first MOS tube;
the cathode of the fourth diode is electrically connected with the drain electrode of the N-type second MOS tube, and the anode of the fourth diode is electrically connected with the source electrode of the N-type second MOS tube.
10. An apparatus, comprising: a housing and the battery connection circuit of claims 1-9,
a battery compartment is arranged on the shell, and the first polarity end and the second polarity end in the battery connecting circuit are arranged in the battery compartment;
the positive terminal is electrically connected with a positive power supply terminal in the equipment;
the negative terminal is electrically connected with a negative power supply terminal in the device.
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| CN201910251822.XA CN109995109A (en) | 2019-03-29 | 2019-03-29 | A kind of battery connection circuitry and its application apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102970017A (en) * | 2012-11-23 | 2013-03-13 | 矽力杰半导体技术(杭州)有限公司 | One-way conduction circuit |
| CN203313144U (en) * | 2013-01-23 | 2013-11-27 | 海能达通信股份有限公司 | Backflow prevention circuit |
| CN105577167A (en) * | 2015-12-23 | 2016-05-11 | 西安盛赛尔电子有限公司 | Automatic polarity switching circuit and electronic device |
| CN206498325U (en) * | 2017-03-09 | 2017-09-15 | 上海灵信视觉技术股份有限公司 | Without pressure drop reverse-connection preventing circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102970017A (en) * | 2012-11-23 | 2013-03-13 | 矽力杰半导体技术(杭州)有限公司 | One-way conduction circuit |
| CN203313144U (en) * | 2013-01-23 | 2013-11-27 | 海能达通信股份有限公司 | Backflow prevention circuit |
| CN105577167A (en) * | 2015-12-23 | 2016-05-11 | 西安盛赛尔电子有限公司 | Automatic polarity switching circuit and electronic device |
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