CN212991994U - Battery pack and electric tool - Google Patents
Battery pack and electric tool Download PDFInfo
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- CN212991994U CN212991994U CN202021436131.1U CN202021436131U CN212991994U CN 212991994 U CN212991994 U CN 212991994U CN 202021436131 U CN202021436131 U CN 202021436131U CN 212991994 U CN212991994 U CN 212991994U
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Abstract
The utility model is suitable for a battery field provides a battery package and electric tool, and this battery package includes the battery control module of the operating condition of group battery, control battery package and does the electric capacity of battery control module power supply, the first end of electric capacity is connected the positive pole of group battery, second end ground connection, the battery package still includes: the quick discharge module is connected with the first end of the capacitor at one end and grounded at the other end; and the discharge control module is used for controlling the on-off of the quick discharge module, when the battery pack stops supplying power, the quick discharge module is switched on, and the capacitor is quickly discharged through the quick discharge module. The embodiment of the utility model provides a through setting up the control module of putting and discharging fast the module, the control module control of discharging discharges the module break-make fast, when the group battery stops the power supply, makes the module of discharging fast switch on, and then makes electric capacity discharge fast through the module of discharging fast.
Description
Technical Field
The utility model belongs to the battery field especially relates to a battery package and electric tool.
Background
With the progress of society, portable electric tools are more and more widely used in our lives, and battery technology as a power source thereof is also continuously developed. The demand for secondary batteries is increasing from the viewpoint of environmental protection and repetitive use, and lithium batteries are ideal for portable power tools due to their unique advantages, such as high energy density, long service life, high discharge voltage, no memory effect, etc. To meet the voltage and capacity requirements of portable power tools, lithium batteries may be used to supply power.
However, the battery pack needs to be controlled and managed, in the prior art, the battery control module and the battery pack form a battery pack, the battery control module also needs to supply power to the battery control module, a capacitor is generally adopted, when the battery pack works, the capacitor is also charged, and the capacitor supplies power to the battery control module.
However, when the battery pack is in a standby state, the battery pack stops supplying power to the control board, the capacitor discharges slowly, and when the voltage on the power line drops to a certain interval in the discharging process of the capacitor, the battery pack may be awoken by mistake; and the capacitor discharges slowly, and when the battery pack needs to be awakened next time, if the capacitor is still discharging, a large amount of electric energy is stored in the capacitor, so that the capacitor is not charged from a low level, and the battery control module cannot detect the rising edge on the power line, so that the battery pack cannot be awakened.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery pack aims at solving the slow problem of electric capacity discharge.
The utility model discloses a realize like this, a battery package, including the battery control module of the operating condition of group battery, control battery package and do the electric capacity of battery control module power supply, the first end of electric capacity is connected the positive pole of group battery, second end ground connection, the battery package still includes:
the quick discharge module is connected with the first end of the capacitor at one end and grounded at the other end;
and the discharge control module is used for controlling the on-off of the quick discharge module, when the battery pack stops supplying power, the quick discharge module is switched on, and the capacitor is quickly discharged through the quick discharge module.
Still further, the fast discharge module includes:
the second end of the first switch tube is grounded;
one end of the first resistor is connected with the first end of the first switching tube, and the other end of the first resistor is connected with the first end of the capacitor;
and one end of the second resistor is connected with the third end of the first switching tube, and the other end of the second resistor is connected with the discharge control module.
Furthermore, the first switch tube is an NPN-type triode, an emitter of the triode is the second end of the first switch tube, a collector of the triode is the first end of the first switch tube, and a base of the triode is the third end of the first switch tube.
Still further, the discharge control module includes:
the cathode of the voltage stabilizing diode is connected with the anode of the battery pack;
a third end of the second switching tube is connected with the anode of the voltage stabilizing diode, a second end of the second switching tube is grounded, and a first end of the second switching tube is connected with the quick discharge module;
one end of the third resistor is connected with the anode of the voltage stabilizing diode, and the other end of the third resistor is grounded;
one end of the fourth resistor is connected with the first end of the capacitor, and the other end of the fourth resistor is connected with the first end of the second switch tube;
and one end of the fifth resistor is connected with the first end of the second switching tube, and the other end of the fifth resistor is grounded.
Furthermore, the second switch tube is an N-channel MOS tube, the drain of the MOS tube is the second end of the second switch tube, the source of the MOS tube is the first end of the second switch tube, and the gate of the MOS tube is the third end of the second switch tube.
Furthermore, the third resistor and the fourth resistor have resistance values in the megaohm range.
The utility model also provides an electric tool, including electronic complete machine and foretell battery package.
The embodiment of the utility model provides a through setting up the control module of putting and discharging fast the module, the control module control of discharging discharges the module break-make fast, when the group battery stops the power supply, makes the module of discharging fast switch on, and then makes electric capacity discharge fast through the module of discharging fast.
Drawings
Fig. 1 is a schematic block diagram of a battery pack provided by the present invention;
fig. 2 is a circuit diagram provided by the present invention.
In the figure, 10, a battery pack; 20. a battery control module; c1, capacitance; 30. a fast discharge module; q1, a first switch tube; r1, a first resistor; r2, a second resistor; 40. a discharge control module; z1, zener diodes; q2, second switch tube; r3, third resistor; r4, fourth resistor; r5, fifth resistor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiment of the utility model provides an in, the battery package still includes: the two ends of the rapid discharge module are respectively connected with the two ends of the capacitor; and the discharge control module controls the on-off of the quick discharge module, when the battery pack stops supplying power, the quick discharge module is switched on, and the capacitor discharges quickly. The embodiment of the utility model provides a through setting up the control module of putting and discharging fast the module, the control module control of discharging discharges the module break-make fast, when the group battery stops the power supply, makes the module of discharging fast switch on, and then makes electric capacity discharge fast through the module of discharging fast.
Example one
As shown in fig. 1, an embodiment of the present invention provides a battery pack, including battery pack 10, battery control module 20 controlling the operating condition of the battery pack and capacitor C1 supplying power to battery control module 20, the first end of capacitor C1 is connected to the positive electrode of battery pack 10, and the second end is grounded, the battery pack further includes:
the fast discharging module 30 is connected with the first end of the capacitor C1 at one end and grounded at the other end;
and the discharge control module 40 is used for controlling the on-off of the rapid discharge module 30, when the battery pack 10 stops supplying power, the rapid discharge module 30 is switched on, and the capacitor C1 is rapidly discharged through the rapid discharge module 30.
Specifically, when the battery pack 10 stops supplying power, the discharging control module 40 outputs a signal to turn on the fast discharging module 30, so that the fast discharging module 30 is turned on, and the capacitor C1 discharges fast from the channel of the fast discharging module 30; when the battery pack 10 is powered up, the discharge control module 40 outputs a signal to turn off the fast discharge module 30, so that the fast discharge module 30 is turned off, and the capacitor C1 cannot discharge from the channel of the fast discharge module 30.
The embodiment of the utility model provides a through setting up the discharge control module 40 and discharging the module 30 fast, discharge control module 40 controls the module 30 break-make that discharges fast, when group battery 10 stops the power supply, makes the module 30 that discharges fast switch on, and then makes electric capacity C1 discharge fast through discharging the module 30 fast.
Example two
As shown in fig. 2, in an alternative embodiment of the present invention, the fast discharging module 30 includes:
a first switch tube Q1, a second end of the first switch tube Q1 being grounded;
a first resistor R1 having one end connected to the first end of the first switch Q1 and the other end connected to the first end of the capacitor C1;
and a second resistor R2 having one end connected to the third end of the first switch Q1 and the other end connected to the discharge control module 40.
Specifically, the first switch Q1 is an NPN transistor, an emitter of the transistor is the second terminal of the first switch Q1, a collector of the transistor is the first terminal of the first switch Q1, and a base of the transistor is the third terminal of the first switch Q1. Of course, the first switching transistor Q1 may be a MOS transistor or the like.
The second resistor R2 is a current-limiting resistor, when the base of the NPN transistor receives a high-level signal, for example, the base of the NPN transistor receives a voltage signal greater than 0.7V, the NPN transistor is turned on, the electric energy in the capacitor C1 is rapidly discharged through the first resistor R1 and the first switch transistor Q1, and the smaller the resistance of the first resistor R1, the faster the discharge.
EXAMPLE III
As shown in fig. 2, in an alternative embodiment of the present invention, the discharging control module 40 includes:
a zener diode Z1, wherein the cathode of the zener diode Z1 is connected with the anode of the battery pack 10;
a second switch Q2, wherein a third terminal of the second switch Q2 is connected to the anode of the zener diode Z1, a second terminal is grounded, and a first terminal is connected to the fast discharge module 30;
a third resistor R3, one end of the third resistor R3 is connected with the anode of the Zener diode Z1, and the other end is grounded;
a fourth resistor R4, wherein one end of the fourth resistor R4 is connected to the first end of the capacitor C1, and the other end is connected to the first end of the second switch Q2;
and one end of the fifth resistor R5 is connected to the first end of the second switch tube Q2, and the other end of the fifth resistor R5 is grounded.
Specifically, the second switch Q2 is an N-channel MOS transistor, a drain of the MOS transistor is the second end of the second switch Q2, a source of the MOS transistor is the first end of the second switch Q2, and a gate of the MOS transistor is the third end of the second switch Q2. Of course, the second switching tube Q2 may also be a triode or the like.
If the resistance of the fifth resistor R5 is represented by R5, R4 is represented by the resistance of the fourth resistor R4, and V1 is represented by the voltage of the residual charge in the capacitor C1, the resistance of the fifth resistor R5 should satisfy the following condition: [ R5 ÷ (R4+ R5) ]. times.V 1 > 0.7V.
When the battery pack 10 wakes up for power supply, the battery pack 10 provides a voltage to turn on the zener diode Z1, so as to turn on the second switch tube Q2, the voltages of the first end and the second end of the second switch tube Q2 are both 0, and at this time, the first switch tube Q1 is turned off; when the battery pack 10 is in a sleep mode, the zener diode Z1 is turned off, the second switch Q2 is also turned off, at this time, the residual charge in the capacitor C1 is divided by the fourth resistor R4 and the fifth resistor R5, the third terminal of the first switch Q1 receives a voltage signal, so that the first switch Q1 is in an on state, and at this time, the capacitor C1 is rapidly discharged through the first resistor R1 and the first switch Q1. Of course, the power in the capacitor C1 cannot be discharged quickly through the first resistor R1 and the first switch Q1, and only needs to be discharged below a level that does not affect the wake-up of the battery pack 10.
Example four
As shown in fig. 2, in an alternative embodiment of the present invention, the resistances of the third resistor R3 and the fourth resistor R4 are in the order of mega ohms.
When the first switch Q1 is turned off, only the third resistor R3 and the fourth resistor R4 in the fast discharging module 30 and the discharging control module 40 consume power, and the third resistor R3 and the fourth resistor R4 are set to be megaohm resistors, so that the standby power consumption of the fast discharging module 30 and the discharging control module 40 can be reduced.
EXAMPLE five
The utility model also provides an electric tool, including electronic complete machine and foretell battery package.
The battery pack is used for providing electric energy for the motor, the control panel and the like, and the battery pack can be awakened by pressing the key to provide the electric energy for the motor, the control panel and the like.
The embodiment of the utility model provides a through setting up the control module of putting and discharging fast the module, the control module control of discharging discharges the module break-make fast, when the group battery stops the power supply, makes the module of discharging fast switch on, and then makes electric capacity discharge fast through the module of discharging fast, avoids discharging slowly because of electric capacity and leads to the mistake to awaken up the battery package or can't awaken up the problem emergence of battery package. The third resistor and the fourth resistor are set to be megaohm resistors, so that the standby power consumption of the low and fast discharge module and the discharge control module can be reduced.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a battery package, includes the battery pack, controls the battery control module of the operating condition of battery package and does the electric capacity of battery control module power supply, the first end of electric capacity is connected the positive pole of group battery, second end ground connection, its characterized in that, the battery package still includes:
the quick discharge module is connected with the first end of the capacitor at one end and grounded at the other end;
and the discharge control module is used for controlling the on-off of the quick discharge module, when the battery pack stops supplying power, the quick discharge module is switched on, and the capacitor is quickly discharged through the quick discharge module.
2. The battery pack of claim 1, wherein the quick discharge module comprises:
the second end of the first switch tube is grounded;
one end of the first resistor is connected with the first end of the first switching tube, and the other end of the first resistor is connected with the first end of the capacitor;
and one end of the second resistor is connected with the third end of the first switching tube, and the other end of the second resistor is connected with the discharge control module.
3. The battery pack of claim 2, wherein the first switch is an NPN transistor, the emitter of the transistor is the second terminal of the first switch, the collector of the transistor is the first terminal of the first switch, and the base of the transistor is the third terminal of the first switch.
4. The battery pack according to any one of claims 1 to 3, wherein the discharge control module includes:
the cathode of the voltage stabilizing diode is connected with the anode of the battery pack;
a third end of the second switching tube is connected with the anode of the voltage stabilizing diode, a second end of the second switching tube is grounded, and a first end of the second switching tube is connected with the quick discharge module;
one end of the third resistor is connected with the anode of the voltage stabilizing diode, and the other end of the third resistor is grounded;
one end of the fourth resistor is connected with the first end of the capacitor, and the other end of the fourth resistor is connected with the first end of the second switch tube;
and one end of the fifth resistor is connected with the first end of the second switching tube, and the other end of the fifth resistor is grounded.
5. The battery pack of claim 4, wherein the second switch transistor is an N-channel MOS transistor, the drain of the MOS transistor is the second terminal of the second switch transistor, the source of the MOS transistor is the first terminal of the second switch transistor, and the gate of the MOS transistor is the third terminal of the second switch transistor.
6. The battery pack according to claim 5, wherein the third resistor and the fourth resistor have a resistance of the order of mega-ohms.
7. An electric power tool comprising an electric motor and the battery pack according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021436131.1U CN212991994U (en) | 2020-07-20 | 2020-07-20 | Battery pack and electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021436131.1U CN212991994U (en) | 2020-07-20 | 2020-07-20 | Battery pack and electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212991994U true CN212991994U (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021436131.1U Active CN212991994U (en) | 2020-07-20 | 2020-07-20 | Battery pack and electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212991994U (en) |
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2020
- 2020-07-20 CN CN202021436131.1U patent/CN212991994U/en active Active
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