CN210327082U - Battery equalization self-discharge circuit and unmanned aerial vehicle - Google Patents
Battery equalization self-discharge circuit and unmanned aerial vehicle Download PDFInfo
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- CN210327082U CN210327082U CN201921368403.6U CN201921368403U CN210327082U CN 210327082 U CN210327082 U CN 210327082U CN 201921368403 U CN201921368403 U CN 201921368403U CN 210327082 U CN210327082 U CN 210327082U
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Abstract
The embodiment of the utility model provides a battery equalization self-discharge circuit and unmanned aerial vehicle are related to, the circuit includes: at least two battery cells and at least two battery cell balancing units; the battery cell balancing unit comprises a series circuit consisting of a discharge load and a switch, wherein one end of the series circuit is electrically connected with one end of the battery cell, and the other end of the series circuit is connected with the other end of the battery cell; a third battery cell is adjacently connected with the second pole of the battery, and the second end of the third battery cell is connected with the second pole of the battery; the battery balancing unit of the third battery cell comprises a third discharging load and a third switch, wherein the first end of the third discharging load is connected with the first end of the third battery cell, and the second end of the third switch is connected with the second end of the third battery cell; the battery balancing circuit further comprises a fourth switch and a current detection unit, and the second end of the third discharging load is connected with the second end of the third battery cell sequentially through the fourth switch and the current detection unit. The embodiment of the utility model provides an utilize same circuit to realize the battery balanced and two kinds of functions of self-discharge, use components and parts few, with low costs and save space.
Description
Technical Field
The embodiment of the utility model provides a relate to battery technical field, especially relate to a balanced self-discharge circuit of battery and unmanned aerial vehicle.
Background
High-rate lithium batteries are increasingly widely used, and when the high-rate lithium batteries are stored for a long time, if the battery electric quantity is higher than a safety value, the danger of bulging exists, so that when the battery electric quantity is too high, the self-discharge treatment needs to be carried out on the batteries. When a high-rate lithium battery is formed by connecting multiple batteries in series, the battery cell voltage and the electric quantity are gradually unbalanced due to differences in the quality, the assembly mode, the use environment and the like of the battery cells. The voltage imbalance can cause the problems of inaccurate electric quantity, jump of the electric quantity and the like, and further potential safety hazards are brought. Therefore, it is necessary to perform voltage equalization processing on each cell in the battery. At present, a complex circuit is used for respectively carrying out self-discharge processing and voltage equalization processing, and the scheme has the advantages of complex circuit and higher cost.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a balanced self-discharge circuit of battery and unmanned aerial vehicle can utilize same circuit to realize that the battery is from discharging and balanced two kinds of functions of battery, and the circuit is simple, with low costs.
In order to solve the technical problem, the utility model discloses a technical scheme be: a battery equalization self-discharge circuit, the circuit comprising:
the battery comprises a microprocessor, at least two battery cells connected in series between a first pole and a second pole of the battery, and at least two battery cell balancing units for balancing voltages of the at least two battery cells respectively;
each battery cell balancing unit comprises a discharging load and a switch which are connected in series, the discharging load is electrically connected with one end of a battery cell corresponding to the battery cell balancing unit, the switch is electrically connected with the other end of the battery cell corresponding to the battery cell balancing unit, and a control end of the switch is electrically connected with the microprocessor;
a third battery cell is arranged in the at least two battery cells and is connected adjacent to the second pole of the battery, the first end of the third battery cell is connected with other battery cells in the at least two battery cells, and the second end of the third battery cell is connected with the second pole of the battery;
the battery balancing unit corresponding to the third battery cell comprises a third discharging load and a third switch, wherein a first end of the third discharging load is connected with a first end of the third battery cell, a second end of the third discharging load is connected with a first end of the third switch, and a second end of the third switch is connected with a second end of the third battery cell;
the battery balancing self-discharging circuit further comprises a fourth switch and a current detection unit, a second end of the third discharging load is connected with a second end of the third battery cell sequentially through the fourth switch and the current detection unit, and a control end of the fourth switch is connected with the microprocessor.
In some embodiments, the battery equalization self-discharge circuit further comprises at least one driving switch, and part or all of the switches are electrically connected to the microprocessor through one driving switch respectively, and the driving switch is used for controlling the switches to be closed.
In some embodiments, a first cell is connected to the at least two cells adjacent to the first pole of the battery, the first end of the first cell is connected to the first pole of the battery, and the second end of the first cell is connected to other cells;
the battery balancing unit corresponding to the first battery core comprises a first discharging load and a first switch, and the control end of the first switch is connected with the microprocessor through a first driving switch.
In some embodiments, the at least two cells further include a second cell, a first end and a second end of the second cell are both connected to other cells, and a first end voltage of the second cell is higher than a second end voltage of the second cell;
the battery balancing unit of the second battery core comprises a second discharging load and a second switch, and the control end of the second switch is connected with the microprocessor through a second driving switch.
In some of these embodiments, the battery equalization self-discharge circuit further comprises a first resistor and a fifth resistor;
the first end of the first driving switch is connected with the control end of the first switch, the first end of the first driving switch is also connected with the first end of the first battery cell through the first resistor, the control end of the first driving switch is connected with the microprocessor, and the second end of the first driving switch is connected with a second voltage;
the first end of the second driving switch is connected with the control end of the second switch, the first end of the second driving switch is further connected with the first end of the second battery cell through the fifth resistor, the control end of the second driving switch is connected with the microprocessor, and the second end of the second driving switch is connected with the second voltage.
In some of these embodiments, the battery equalization self-discharge circuit further comprises a second resistor, a seventh resistor, and a tenth resistor;
the second resistor is connected between the control end of the first driving switch and the microprocessor;
the seventh resistor is connected between the control end of the second driving switch and the microprocessor;
the tenth resistor is connected between the control terminal of the third switch and the microprocessor.
In some of these embodiments, the battery equalization self-discharge circuit further comprises a fourth resistor, an eighth resistor, an eleventh resistor, and a twelfth resistor;
the control end of the first driving switch is also connected with a second voltage through the fourth resistor;
the control end of the second driving switch is also connected with the second voltage through the eighth resistor;
the control end of the third switch is also connected with the second voltage through the eleventh resistor;
the control end of the fourth switch is also connected with the second voltage through the twelfth resistor.
In some of these embodiments, the battery equalization self-discharge circuit further comprises a battery output first pole, a battery output second pole, a charge switch, and a discharge switch;
the first pole of the battery is connected with the first pole of the output through the charging switch and the discharging switch;
and the common connection end of the fourth switch and the current detection unit is connected with the second pole of the battery output.
In some embodiments, the second end of the third cell is further connected to a first voltage.
In order to solve the above technical problem, the utility model discloses a still another technical scheme be: a drone, the drone comprising:
a body;
a wing coupled to the fuselage;
and the battery balancing self-discharging circuit is arranged on the machine body.
The embodiment of the utility model provides a through setting up the balanced unit of electric core of constituteing by discharge load and switch for every electric core of establishing ties to set up the switch and control the balanced unit of electric core, when needs carry out balanced voltage to certain electric core, can work through the balanced unit of corresponding electric core of on-off control, in order to discharge for this electric core. The utility model discloses balanced self-discharge circuit of battery still includes fourth switch and current detection unit, and the second end of third discharge load still loops through the second end that fourth switch and current detection unit connect the third electricity core. And controlling the conduction of the switches except the third switch to form a discharge loop between the first pole and the second pole of the battery, so as to perform self-discharge on the battery. The embodiment of the utility model provides an utilize same circuit to realize the battery balanced and two kinds of functions of self-discharge, use components and parts few, with low costs and save space.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural diagram of an embodiment of a battery equalization self-discharge circuit of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the battery equalization self-discharge circuit of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the battery equalization self-discharge circuit of the present invention;
fig. 4 is a schematic structural diagram of an embodiment of the battery equalization self-discharge circuit of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
In the field of battery technology, in order to increase battery capacity, a plurality of battery cells are often connected in series to form a battery, however, the problem of inconsistent voltage of the plurality of battery cells connected in series often exists, and many problems are brought to the use of the battery. When the battery is stored for a long time, if the battery power is higher than a safe value, there is a risk of swelling. Therefore, it is necessary to perform voltage equalization processing on each cell in the battery, and to perform discharge processing when the battery voltage is too high. The embodiment of the utility model provides a balanced self-discharge circuit of battery can realize battery balanced and two kinds of functions of self-discharge with same circuit.
Fig. 1 exemplarily shows one structure of a battery balancing self-discharge circuit, where the battery balancing self-discharge circuit includes at least two battery cells and at least two battery cell balancing units, the at least two battery cells are connected in series between a first pole and a second pole of the battery, the number of the battery cell balancing units is the same as the number of the battery cells, and the battery cell balancing units are configured to adjust voltages of the battery cells so as to balance voltages of the battery cells.
The first electrode of the battery can be a positive electrode B + of the battery, and the second electrode of the battery can be a negative electrode B-. In the embodiment shown in fig. 1, the battery balancing self-discharge circuit includes a first cell 21a and a third cell 21c connected in series between a battery positive electrode B + and a battery negative electrode B-. The battery balancing unit of the first battery cell 21a includes a first discharging load 22a and a first switch 24, a first end of the first discharging load 22a is connected to a first end (i.e., the battery positive electrode B +) of the first battery cell 21a, a second end of the first discharging load 22a is connected to a second end of the first switch 24, and a first end of the first switch 24 is connected to a second end of the first battery cell 21 a. The control terminal of the first switch 24 is connected to the microprocessor 11.
In the embodiment shown in fig. 1, the first discharge load 22a is connected to the positive electrode of the first cell 21a, and the first switch 24 is connected to the negative electrode of the first cell 21 a. In other embodiments, the first discharge load 22a may be connected to the negative electrode of the first cell 21a, and the first switch 24 may be connected to the positive electrode of the first cell 21a, so long as the series relationship between the first discharge load 22a and the first switch 24 is satisfied.
The third battery cell 21c is adjacently connected to the battery negative electrode B-, the first end of the third battery cell 21c is connected to the first battery cell 21a, and the second end is connected to the battery negative electrode B-. The battery balancing unit of the third cell 21c includes a third discharging load 22c and a third switch 26, a first end of the third discharging load 22c is connected to a first end of the third cell 21c, a second end of the third discharging load 22c is connected to a first end of the third switch 26, and a second end of the third switch 26 is connected to a second end (i.e., battery negative electrode B-) of the third cell 21 c.
The battery balancing self-discharging circuit further comprises a fourth switch 27 and a current detection unit 29, a second end of a third discharging load 22c is further connected with a second end of a third battery cell through the fourth switch 27 and the current detection unit 29 in sequence, and a control end of the fourth switch 27 is connected with the microprocessor 11.
When the first switch 24 is closed, the first discharge load 22a discharges the first cell 21a, and when the third switch 26 is closed, the third discharge load 22c discharges the third cell 21 c. When the first switch 24 and the fourth switch 27 are closed at the same time, a self-discharge loop is formed, and the current flows through the battery anode B +, the first discharge load 22a, the first switch 24, the third discharge load 22c, the fourth switch 27, the current detection unit 29 and the battery cathode B-in sequence, so that the purpose of battery discharge is achieved.
Here, whether the battery voltage is too high may be judged by the current detection unit 29, and when the battery voltage is too high, the first switch 24 and the fourth switch 27 are closed to discharge the battery. And stopping battery discharge if the battery voltage is detected to be recovered to normal. In some embodiments, the current detection unit 29 may be implemented by a resistor.
The method comprises the steps of judging which electric core in the battery needs to be subjected to voltage equalization, detecting the voltage of each electric core by utilizing an independent detection unit or some pins of a microprocessor, and calculating a difference value between the electric cores if the voltage of each electric core is found to be unbalanced through detection, so that the equalization control is performed according to the difference value. The method for detecting the voltages of the battery cells, calculating the voltage deviation value, and performing the balance control according to the voltage deviation belongs to the prior art, and is not described herein again.
The microprocessor may be any suitable processor with calculation and logic control functions, such as a single chip microcomputer.
The embodiment of the utility model provides a through setting up the balanced unit of electric core of constituteing by discharge load and switch for every electric core of establishing ties to set up the switch and control the balanced unit of electric core, when needs carry out balanced voltage to certain electric core, can work through the balanced unit of corresponding electric core of on-off control, in order to discharge for this electric core. The embodiment of the utility model provides a fourth switch and current detection unit have still been set up for form the return circuit that discharges between battery first pole and battery second pole, carry out self-discharge to the battery. The embodiment of the utility model provides an utilize same circuit to realize the battery balanced and two kinds of functions of self-discharge, use components and parts few, with low costs and save space.
In some of these embodiments, the activation voltage of the switch near the battery positive B + (e.g., the first switch 24 in fig. 1) may be high and the voltage output by the microprocessor may be insufficient to activate the switch. Therefore, a drive switch may be provided between the switch and the microprocessor 11. As shown in fig. 2, a first driving switch 23a is disposed between the first switch 24 and the control pin of the microprocessor 11, the driving switch is used for controlling the first switch 24 to be turned on, wherein a control terminal of the first driving switch 23a is connected to the microprocessor 11.
Fig. 1 and fig. 2 show a scenario in which the battery includes two cells, in other embodiments, the battery may include more cells, and fig. 3 shows a scenario in which the battery includes three cells. In the embodiment shown in fig. 3, the battery includes a first cell 21a, a second cell 21b, and a third cell 21c connected in series. The first discharge load 22a and the first switch 24 constitute a battery balancing unit of the first cell 21a, the second switch 25 and the second discharge load 22b constitute a battery balancing unit of the second cell 21b, and the third discharge load 22c and the third switch 26 constitute a battery balancing unit of the third cell 21 c. A second end of the second switch 25 is connected to the first end of the second battery cell 21b, a first end of the second switch 25 is connected to the first end of the second discharging load 22b, a second end of the second discharging load 22b is connected to the second end of the second battery cell 21b, and a control end of the second switch 25 is connected to the microprocessor. The first switch 24 and the second switch 25 are driven by a first driving switch 23a and a second driving switch 23b, respectively, and the third switch 26 is directly controlled by the microprocessor.
When the first switch 24, the second switch 25 and the fourth switch 27 are closed, the current flows through the battery anode B +, the first discharging load 22a, the first switch 24, the second switch 25, the second discharging load 22B, the third discharging load 22c, the fourth switch 27, the current detection unit 29 and the battery cathode B-in sequence, and the battery self-discharges.
In practical applications, a charging switch 28a and a discharging switch 28B may be disposed between the first battery output pole PACK + and the positive battery pole B + to control charging and discharging of the battery, and the common connection terminal of the fourth switch 27 and the current detection unit 29 is used as the second battery output pole PACK-. The battery negative terminal B-may also be connected to a first voltage, which in some embodiments is ground GND.
Specifically, in some embodiments, the first discharge load 22a, the second discharge load 22b, and the third discharge load 22c may discharge using resistors. The first switch 24, the second switch 25, the third switch 26, the fourth switch 27, the first driving switch 23a, the second driving switch 23b, the charging switch 28a, and the discharging switch 28b may be metal oxide semiconductor field effect transistors (MOS). On the occasion that each switch adopts an MOS tube, the first end is a drain electrode, the second end is a source electrode, and the control end is a grid electrode. In some of these embodiments, each switch may further comprise a diode connected across its source and drain.
Fig. 4 shows another structure of the battery equalization self-discharge circuit, and as shown in fig. 4, the battery includes a first CELL1, a second CELL2, and a third CELL3 connected in series. The battery equalization unit of the first CELL1 is a series circuit composed of a MOS transistor Q3 and a resistor R3, and the MOS transistor Q3 is driven by a MOS transistor Q4. The gate of the MOS transistor Q4 is connected to the microprocessor, the source is connected to the second voltage, and the drain is connected to the anode of the first CELL1 through the resistor R1. In some embodiments, the gate of the MOS transistor Q4 may further be connected to a current limiting resistor R2, and the second voltage is connected to the second voltage through a resistor R4. The second voltage is a low voltage, which can ensure that the Q4 is in a cut-off state when the control signal is not received, so as to prevent the battery from discharging by mistake. In some of these embodiments, the second voltage may be digital DGND.
The battery equalization unit of the second CELL2 is a series circuit composed of a MOS transistor Q5 and a resistor R6, and the MOS transistor Q5 is driven by a MOS transistor Q6. The gate of the MOS transistor Q6 is connected to the microprocessor, the source is connected to the second voltage, and the drain is connected to the anode of the second CELL2 through the resistor R5. In some embodiments, the gate of the MOS transistor Q6 may further be connected to a current limiting resistor R7, and the second voltage is connected through a resistor R8.
The battery equalization unit of the third CELL3 is a series circuit composed of a MOS transistor Q7 and a resistor R9, and the MOS transistor Q7 is directly driven by the microprocessor. In some embodiments, a current-limiting resistor R10 is further connected between the gate of the MOS transistor Q7 and the microprocessor, and the gate of the MOS transistor Q7 is further connected to the second voltage through the resistor R11.
The fourth switch comprises a MOS transistor Q8, the MOS transistor Q8 is directly driven by the microprocessor, and in some embodiments, the gate of the MOS transistor Q8 is further connected to the second voltage through a resistor R12.
If the first CELL1 needs to be discharged and balanced, pin 1 of the microprocessor 11 outputs high level, the other three pins output low level, Q4 is turned on, the grid of Q3 becomes low level, Q3 is turned on, and CELL1 carries out discharge and balance through a resistor R3. If the second CELL2 needs to be discharged and balanced, pin 2 of the microprocessor 11 outputs high level, the other three pins output low level, Q6 is turned on, the grid of Q5 becomes low level, Q5 is turned on, and CELL2 carries out discharge and balance through a resistor R6.
If the battery needs to be self-discharged, the pin 1, the pin 2 and the pin 3 of the microprocessor 11 output high level, the pin 4 outputs low level, and then Q3, Q5 and Q8 are all conducted, and the battery is self-discharged.
In the embodiment shown in fig. 4, Q1, Q2, Q4, Q6, Q8, and Q7 are N-channel fets, and Q3 and Q5 are P-channel fets. In other embodiments, other types of switching tubes may be used for Q1, Q2, Q3, Q4, Q5, Q6, Q8, and Q7, as long as the above control logic is implemented.
The utility model discloses in the balanced self-discharge circuit of battery can be applied to unmanned aerial vehicle for carry out battery balance control to the unmanned aerial vehicle battery, wherein, unmanned aerial vehicle can be for any suitable unmanned vehicles including fixed wing unmanned vehicles and rotary wing unmanned vehicles, for example helicopter, four gyroplanes and the aircraft that has the rotor of other quantity and/or rotor configuration. The unmanned aerial vehicle can also be other movable objects, such as manned vehicles, aeromodelling, unmanned airships, unmanned hot air balloons, robots, and the like. In some of these embodiments, unmanned aerial vehicle includes the fuselage, with the horn that the fuselage links to each other and locate the driving system of horn, the balanced self discharge circuit of battery can set up in on the fuselage.
It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A battery equalization self-discharge circuit, the circuit comprising:
the battery comprises a microprocessor, at least two battery cells connected in series between a first pole and a second pole of the battery, and at least two battery cell balancing units for balancing voltages of the at least two battery cells respectively;
each battery cell balancing unit comprises a discharging load and a switch which are connected in series, the discharging load is electrically connected with one end of a battery cell corresponding to the battery cell balancing unit, the switch is electrically connected with the other end of the battery cell corresponding to the battery cell balancing unit, and a control end of the switch is electrically connected with the microprocessor;
a third battery cell is arranged in the at least two battery cells and is connected adjacent to the second pole of the battery, the first end of the third battery cell is connected with other battery cells in the at least two battery cells, and the second end of the third battery cell is connected with the second pole of the battery;
the battery balancing unit corresponding to the third battery cell comprises a third discharging load and a third switch, wherein a first end of the third discharging load is connected with a first end of the third battery cell, a second end of the third discharging load is connected with a first end of the third switch, and a second end of the third switch is connected with a second end of the third battery cell;
the battery balancing self-discharging circuit further comprises a fourth switch and a current detection unit, a second end of the third discharging load is connected with a second end of the third battery cell sequentially through the fourth switch and the current detection unit, and a control end of the fourth switch is connected with the microprocessor.
2. The battery equalization self-discharge circuit of claim 1 further comprising at least one drive switch, some or all of the switches being electrically connected to the microprocessor through one of the drive switches, respectively, the drive switch being configured to control the switch to close.
3. The battery balancing self-discharge circuit according to claim 2, wherein a first cell is connected to the at least two cells adjacent to the first pole of the battery, a first end of the first cell is connected to the first pole of the battery, and a second end of the first cell is connected to the other cells;
the battery balancing unit corresponding to the first battery core comprises a first discharging load and a first switch, and the control end of the first switch is connected with the microprocessor through a first driving switch.
4. The battery balancing self-discharge circuit of claim 3, wherein the at least two cells further comprise a second cell, wherein a first end and a second end of the second cell are both connected to other cells, and wherein a first end voltage of the second cell is higher than a second end voltage of the second cell;
the battery balancing unit of the second battery core comprises a second discharging load and a second switch, and the control end of the second switch is connected with the microprocessor through a second driving switch.
5. The battery equalization self-discharge circuit of claim 4 wherein the battery equalization self-discharge circuit further comprises a first resistor and a fifth resistor;
the first end of the first driving switch is connected with the control end of the first switch, the first end of the first driving switch is also connected with the first end of the first battery cell through the first resistor, the control end of the first driving switch is connected with the microprocessor, and the second end of the first driving switch is connected with a second voltage;
the first end of the second driving switch is connected with the control end of the second switch, the first end of the second driving switch is further connected with the first end of the second battery cell through the fifth resistor, the control end of the second driving switch is connected with the microprocessor, and the second end of the second driving switch is connected with the second voltage.
6. The battery equalization self-discharge circuit of claim 5 wherein the battery equalization self-discharge circuit further comprises a second resistor, a seventh resistor, and a tenth resistor;
the second resistor is connected between the control end of the first driving switch and the microprocessor;
the seventh resistor is connected between the control end of the second driving switch and the microprocessor;
the tenth resistor is connected between the control terminal of the third switch and the microprocessor.
7. The battery balancing self-discharge circuit according to any one of claims 4 to 6, further comprising a fourth resistor, an eighth resistor, an eleventh resistor and a twelfth resistor;
the control end of the first driving switch is also connected with a second voltage through the fourth resistor;
the control end of the second driving switch is also connected with the second voltage through the eighth resistor;
the control end of the third switch is also connected with the second voltage through the eleventh resistor;
the control end of the fourth switch is also connected with the second voltage through the twelfth resistor.
8. The battery balancing self-discharge circuit according to any one of claims 1 to 6, further comprising a battery output first pole, a battery output second pole, a charge switch and a discharge switch;
the first pole of the battery is connected with the first pole of the output through the charging switch and the discharging switch;
and the common connection end of the fourth switch and the current detection unit is connected with the second pole of the battery output.
9. The battery balancing self-discharge circuit of any one of claims 1 to 6, wherein the second end of the third cell is further connected to a first voltage.
10. A drone, characterized in that it comprises:
a body;
a wing coupled to the fuselage;
the battery balancing self-discharge circuit according to any one of claims 1 to 9, wherein the battery balancing self-discharge circuit is provided in the body.
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| CN201921368403.6U CN210327082U (en) | 2019-08-20 | 2019-08-20 | Battery equalization self-discharge circuit and unmanned aerial vehicle |
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| CN201921368403.6U CN210327082U (en) | 2019-08-20 | 2019-08-20 | Battery equalization self-discharge circuit and unmanned aerial vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350632A (en) * | 2019-08-20 | 2019-10-18 | 深圳市道通智能航空技术有限公司 | A kind of battery balanced self discharge circuit and unmanned plane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350632A (en) * | 2019-08-20 | 2019-10-18 | 深圳市道通智能航空技术有限公司 | A kind of battery balanced self discharge circuit and unmanned plane |
| WO2021032221A3 (en) * | 2019-08-20 | 2021-04-15 | 深圳市道通智能航空技术股份有限公司 | Battery balancing self-discharge circuit and unmanned aerial vehicle |
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