CN112087036A - Battery activation device and terminal equipment - Google Patents

Battery activation device and terminal equipment Download PDF

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Publication number
CN112087036A
CN112087036A CN202010995789.4A CN202010995789A CN112087036A CN 112087036 A CN112087036 A CN 112087036A CN 202010995789 A CN202010995789 A CN 202010995789A CN 112087036 A CN112087036 A CN 112087036A
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China
Prior art keywords
battery
power supply
charging
voltage
capacitor
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CN202010995789.4A
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Chinese (zh)
Inventor
何岸
王鑫
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DO Technology Co ltd
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DO Technology Co ltd
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Priority to CN202010995789.4A priority Critical patent/CN112087036A/en
Publication of CN112087036A publication Critical patent/CN112087036A/en
Pending legal-status Critical Current

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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
    • H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The embodiment of the invention provides a battery activation device and terminal equipment, and relates to the field of batteries. The battery activation device comprises a charging module, a battery and a power supply module, wherein the charging module and the power supply module are electrically connected with the battery, the charging module charges the battery when being connected with a charging power supply, and the power supply module keeps a closing state when the battery is in an over-discharge protection state so as to enable the voltage of the battery to reach an over-discharge relieving voltage. Because the power supply module keeps the off state when the charging module charges the battery in the over-discharge protection state, the load connected with the power supply module can not consume electric energy, so that the current consumption of the battery is reduced, which is equivalent to that the charging module only charges the battery, so that the battery can be charged and activated by a small pre-charging current, the battery can be charged to a full-charge state, and the service time and the standby time of the terminal equipment are prolonged.

Description

Battery activation device and terminal equipment
Technical Field
The invention relates to the field of batteries, in particular to a battery activation device and terminal equipment.
Background
The over-discharge of the battery refers to that the battery continues to discharge after being normally discharged to a cut-off voltage. When the battery enters an over-discharge protection state, the battery needs to be charged and activated, so that the terminal equipment is restored to a normal working state.
The existing battery activation methods have two types: one is to disassemble the terminal equipment, take out the battery, use the direct current voltage source, set up suitable voltage value and current value, charge the positive and negative of the battery directly, realize the battery activation, this kind of mode needs to dismantle the terminal equipment, for terminal equipment with waterproof function, after dismantling the machine, the waterproof function will lose efficacy or decline; the other method is to change the charging parameters of the charging chip, increase the pre-charging current and realize the activation of the battery, but the battery cannot reach the actual full-charge state when the battery is charged by using the excessively high pre-charging current, and when the battery capacity of the terminal equipment is relatively small, the actual use time and the standby time of the terminal equipment can be influenced by the battery which is not fully charged.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a battery activation device and a terminal device, which can activate the battery by charging with a small pre-charging current without disassembling the battery after the battery enters an over-discharge protection state.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment of the present invention provides a battery activation device, including a charging module, a battery, and a power supply module, where the charging module and the power supply module are both electrically connected to the battery;
the charging module is used for charging the battery when being connected with a charging power supply;
the power supply module is used for keeping a closed state when the battery is in an over-discharge protection state, so that the voltage of the battery reaches an over-discharge release voltage.
In an optional embodiment, the power supply module includes a power supply chip and a power supply control circuit, an input end of the power supply chip is electrically connected to the battery, one end of the power supply control circuit is electrically connected to the battery, and the other end of the power supply control circuit is electrically connected to an enable end of the power supply chip;
the power supply control circuit is used for controlling the voltage of the enabling end to be lower than the starting voltage of the power supply chip when the battery is in an over-discharge protection state, so that the power supply chip keeps a closed state.
In an optional embodiment, the power supply control circuit includes a delay circuit, and the delay circuit is further configured to increase a time for the voltage of the enable terminal to reach the turn-on voltage after the voltage of the battery reaches an overdischarge release voltage, so as to delay the turn-on time of the power supply chip.
In an optional embodiment, the delay circuit includes a first resistor and a first capacitor, the first resistor and the first capacitor are connected in series between the battery and ground, and an enable terminal of the power supply chip is electrically connected between the first resistor and the first capacitor.
In an optional embodiment, the delay circuit further comprises a second resistor connected in parallel with the first capacitor.
In an optional embodiment, the power supply control circuit includes a voltage dividing circuit, the voltage dividing circuit includes a first resistor and a second resistor, the first resistor and the second resistor are connected in series between the battery and ground, and an enable terminal of the power supply chip is electrically connected between the first resistor and the second resistor.
In an optional embodiment, the power supply module further includes a second capacitor, a third capacitor, a fourth capacitor, and a fifth capacitor;
the second capacitor and the third capacitor are electrically connected between the input end of the power supply chip and the ground, and the fourth capacitor and the fifth capacitor are electrically connected between the output end of the power supply chip and the ground.
In an optional embodiment, the charging module includes a charging chip and a charging interface, an input end of the charging chip is electrically connected to the charging interface, an output end of the charging chip is electrically connected to the battery, and the charging interface is used for connecting a charging power supply.
In a second aspect, an embodiment of the present invention provides a terminal device, including the battery activation apparatus described in any one of the foregoing embodiments.
In the battery activation device and the terminal device provided by the embodiment of the invention, the battery activation device comprises a charging module, a battery and a power supply module, wherein the charging module and the power supply module are electrically connected with the battery, the battery is charged by the charging module when the charging module is connected with a charging power supply, and the power supply module keeps a closing state when the battery is in an over-discharge protection state, so that the voltage of the battery reaches an over-discharge release voltage. Because the power supply module keeps the off state when the charging module charges the battery in the over-discharge protection state, the load connected with the power supply module can not consume electric energy, so that the current consumption of the battery is reduced, which is equivalent to that the charging module only charges the battery, so that the battery can be charged and activated by a small pre-charging current, the battery can be charged to a full-charge state, and the service time and the standby time of the terminal equipment are prolonged. In addition, the battery activation device provided by the embodiment of the invention has the advantages of simple structure and low cost, and can realize the activation of the over-discharge battery without disassembling the terminal equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a block diagram of a battery activation device according to an embodiment of the present invention;
fig. 2 is another block diagram of a battery activation device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a circuit connection of the power supply module;
FIG. 4 is a schematic diagram of another circuit connection of the power supply module;
FIG. 5 is a schematic diagram of another circuit connection of the power supply module;
FIG. 6 is a schematic diagram of simulated waveforms corresponding to the delay circuits in FIGS. 4 and 5, respectively;
FIG. 7 is a schematic diagram of another circuit connection of the power supply module;
fig. 8 is a schematic circuit diagram of the charging module.
Icon: 100-a battery activation device; 110-a charging module; 120-a battery; 130-a power supply module; 111-a charging chip; 112-a charging interface; 131-a power supply chip; 132-a power supply control circuit; r1 — first resistance; r2 — second resistance; c1 — first capacitance; c2 — second capacitance; c3 — third capacitance; c4-fourth capacitance; c5-fifth capacitance.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that 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 inventor researches and discovers that when a terminal device (such as wearing products such as a bracelet and a watch) is charged at present, the designed pre-charging current and the full-charge current are usually small in order to enable a battery to reach a full-charge state as far as possible, but when the battery is over-discharged, the power supply voltage for supplying power to the terminal device is too low, devices such as a Micro Controller Unit (MCU) in the terminal device consume electric energy in the time, the designed pre-charging current is smaller than the consumed current, and the charging energy cannot enable the voltage of the battery to reach an over-discharge release voltage. Currently, battery activation can be realized by changing the charging parameters of the charging chip and increasing the pre-charging current (for example, making the pre-charging current greater than 20mA), but the battery cannot reach the actual full-charge state by charging the battery with an excessively high pre-charging current, and when the battery capacity of the terminal device is relatively small, the actual use time and the standby time of the terminal device are affected by the battery which is not fully charged.
Based on this, the embodiment of the present invention provides a battery activation scheme, which can activate a battery by charging after the battery enters an over-discharge protection state without disassembling the battery, so that the terminal device recovers to a normal operating state, and can keep a small pre-charging current to charge the battery to a full-charge state, thereby increasing the standby time and the service time of the terminal device, and improving user experience. The technical solutions provided by the embodiments of the present invention are explained in detail below.
Referring to fig. 1, a block diagram of a battery activation device 100 according to an embodiment of the present invention is shown. The battery activation apparatus 100 may be applied to a terminal Device, wherein the terminal Device may be a wearable product such as a bracelet and a watch, and may also be an electronic product such as a smart phone, a tablet Computer, a Personal Computer (PC), a Mobile Internet Device (MID), a Personal Digital Assistant (PDA), and the like.
As shown in fig. 1, the battery activation apparatus 100 includes a charging module 110, a battery 120, and a power supply module 130, where the charging module 110 and the power supply module 130 are electrically connected to the battery 120, and the power supply module 130 is used to connect loads such as an MCU and a peripheral in a terminal device, and can be used as a power supply for the MCU and the peripheral.
The charging module 110 is used for charging the battery 120 when a charging power source is connected.
In the present embodiment, when the charging module 110 is powered on, a charging current is provided to the battery 120, so as to charge the battery 120.
The power supply module 130 is configured to maintain an off state when the battery 120 is in the over-discharge protection state, so that the voltage of the battery 120 reaches the over-discharge release voltage.
In this embodiment, when the battery 120 is overdischarged and the charging module 110 charges the battery 120, since the power supply module 130 keeps the off state, which is equivalent to disconnecting the power supply of the MCU and the external device, the current consumption of the battery 120 becomes smaller, and only a few tens of microamperes of current are consumed, so that the charging module 110 only charges the battery 120, and the voltage of the battery 120 reaches the overdischarge release voltage, thereby activating the battery 120.
As can be seen, in the battery activation apparatus 100 according to the embodiment of the present invention, since the power supply module 130 keeps the off state when the charging module 110 charges the battery 120 in the over-discharge protection state, the load connected to the power supply module 130 does not consume electric energy, so that the current consumption of the battery 120 is reduced, which is equivalent to that the charging module 110 charges only the battery 120, and therefore, the battery 120 can be charged and activated by a small pre-charging current, so that the battery 120 can be charged to the full-charge state, and the service time and the standby time of the terminal device are increased. In addition, the battery activation device 100 has a simple structure and low cost, and can activate the overdischarge battery 120 without disassembling the terminal equipment.
Alternatively, as shown in fig. 2, the power supply module 130 may include a power supply chip 131 and a power supply control circuit 132, an input terminal VIN of the power supply chip 131 is electrically connected to the battery 120, one end of the power supply control circuit 132 is electrically connected to the battery 120, the other end of the power supply control circuit 132 is electrically connected to an enable terminal CE of the power supply chip 131, and an output terminal Vout of the power supply chip 131 is electrically connected to a load.
The power supply control circuit 132 is configured to control the voltage of the enable terminal CE to be lower than the turn-on voltage of the power supply chip 131 when the battery 120 is in the over-discharge protection state, so that the power supply chip 131 keeps the turn-off state.
For example, assuming that the turn-on voltage of the power supply chip 131 is 1.5V, when the battery 120 is overdischarged, the voltage VBAT of the battery 120 is 0V, the voltage Vce of the enable terminal CE is less than 1.5V, the power supply chip 131 is in an off state, the load of the battery 120 is turned off, the charging current provided by the charging module 110 is only supplied to the battery 120, the battery 120 keeps charging, and before the battery 120 is not activated, the power supply control circuit 132 always controls the voltage Vce of the enable terminal CE to be less than 1.5V, so that the voltage of the battery 120 reaches an overdischarge release voltage, and the charging activation of the battery 120 is realized.
Alternatively, in an embodiment, the power supply control circuit 132 may include a voltage dividing circuit, as shown in fig. 3, the voltage dividing circuit may include a first resistor R1 and a second resistor R2, the first resistor R1 and the second resistor R2 are connected in series between the battery 120 and the ground, and the enable terminal CE of the power supply chip 131 is electrically connected between the first resistor R1 and the second resistor R2.
In this embodiment, the resistances of the first resistor R1 and the second resistor R2 may be reasonably selected according to actual situations, so that the voltage Vce output to the enable terminal CE of the power supply chip 131 through the voltage dividing function of the voltage dividing circuit is lower than the turn-on voltage of the power supply chip 131 before the battery 120 is over-discharged and is not activated, so that the power supply chip 131 keeps the off state; meanwhile, it is also ensured that after the battery 120 is activated, the voltage Vce output to the enable terminal CE of the power supply chip 131 through the voltage dividing function of the voltage dividing circuit does not reach the turn-on voltage immediately, but the power supply chip 131 is turned on after the voltage VBAT of the battery 120 reaches a specific voltage node, so that the battery 120 does not enter the over-discharge protection state again after the load connected to the power supply chip 131 works.
Optionally, in another embodiment, the power supply control circuit 132 may include a delay circuit, and the delay circuit is further configured to increase the time when the voltage Vce of the enable terminal CE reaches the turn-on voltage after the voltage of the battery 120 reaches the overdischarge release voltage, so as to delay the turn-on time of the power supply chip 131.
In one example, the delay circuit may employ the circuit configuration of fig. 4. As shown in fig. 4, the delay circuit includes a first resistor R1 and a first capacitor C1, the first resistor R1 and the first capacitor C1 are connected in series between the battery 120 and the ground, and the enable terminal CE of the power supply chip 131 is electrically connected between the first resistor R1 and the first capacitor C1.
The first capacitor C1 has the following functions: 1. after the battery 120 is activated, delaying for a proper time to enable the voltage VBAT of the battery 120 to be at a specific voltage node, and turning on the load at the rear end of the power supply module 130, so as to prevent the battery 120 from entering an over-discharge protection state again due to an excessive current drawn after the load works; 2. when the battery 120 is assembled, the product can be powered on and delayed, the impact current can be inhibited, and the probability that the impact current breaks down the electronic components can be greatly reduced.
In another example, the delay circuit may employ the circuit structure of fig. 5. As shown in fig. 5, the delay circuit is added with a second resistor R2 on the basis of the delay circuit shown in fig. 4, and the second resistor R2 is connected in parallel with the first capacitor C1.
The second resistor R2 and the first resistor R1 form a voltage divider circuit, and by adding the second resistor R2, the delay time can be further increased on the basis of the delay circuit formed by the first resistor R1 and the first capacitor C1, and the voltage Vce of the enable terminal CE can be more easily controlled, so that the turn-on time of the power supply chip 131 is further delayed after the battery 120 is activated by overdischarge. As shown in fig. 6, which are simulated waveforms corresponding to the delay circuits in fig. 4 and 5, respectively (RC1 is the delay circuit in fig. 4, and RC2 is the delay circuit in fig. 5), it can be seen from fig. 6 that the delay curve of the delay circuit with voltage divider circuit (i.e., RC2) is more gradual, and the delay time is increased, so that the voltage Vce of the enable terminal CE is easier to control.
Alternatively, the delay time of the delay circuit can be according to the formula
Figure BDA0002692571350000101
Calculating; where t is the delay time, V1Is the supply voltage (voltage of the battery 120), V0Is the initial voltage, V, of the first capacitor C1tIs the voltage at time t of the first capacitor C1.
In this embodiment, the voltage of the first capacitor C1 is the voltage Vce of the enable terminal CE. It can be understood that, when the battery 120 is overdischarged and is not activated, the voltage across the first capacitor C1 needs to be lower than the turn-on voltage (e.g. 1.5V) to keep the power supply chip 131 in the off state, and to disconnect the power supply of the back-end load, so that the current consumption of the battery 120 is reduced, and the purpose of activating the battery 120 is achieved; when the battery 120 is activated and charged to a certain voltage node (e.g. 3.6V), if there is no first capacitor C1, the voltage Vce of the enable terminal CE reaches the turn-on voltage to turn on the power supply chip 131, and as the battery 120 continues to be charged, the voltage VBAT of the battery 120 continues to rise; however, due to the presence of the first capacitor C1, the voltage Vce at the enable terminal CE will reach the turn-on voltage after a delay time; and if the second resistor R2 is added to the delay circuit for voltage division, the delay time is further increased, so as to further delay the on-time of the power supply chip 131. After the power supply chip 131 is turned on, the power supply chip 131 outputs a voltage for the load to work.
Therefore, the battery activation device 100 provided in the embodiment of the present invention controls the MCU inside the terminal device and the power supply of the external device by using the delay characteristic of the delay circuit, so as to achieve the purposes of disconnecting the load and independently charging the battery 120, thereby effectively activating the overdischarge battery 120; by utilizing the time delay characteristic of the time delay circuit, the impact current brought in the assembly process of the battery 120 can be inhibited, the risk that the electronic element is damaged by the impact current is reduced, the maintenance cost is reduced, and the assembly yield of the product is improved; by utilizing the voltage division function of the voltage division circuit, the delay curve of the delay circuit is more gentle, and the delay time is increased, so that the starting time of the power supply chip 131 is further delayed after the battery 120 is over-discharged and activated.
Optionally, as shown in fig. 7, the power supply module 130 further includes a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and a fifth capacitor C5, wherein the second capacitor C2 and the third capacitor C3 are electrically connected between the input terminal VIN of the power supply chip 131 and the ground, and the fourth capacitor C4 and the fifth capacitor C5 are electrically connected between the output terminal Vout of the power supply chip 131 and the ground.
In this embodiment, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, and the fifth capacitor C5 are decoupling capacitors, which have an energy storage function on one hand and can filter noise interference in the input/output signal on the other hand.
Alternatively, as shown in fig. 8, the charging module 110 may include a charging chip 111 and a charging interface 112, an input terminal VIN of the charging chip 111 is electrically connected to the charging interface 112, an output terminal BAT of the charging chip 111 is electrically connected to the battery 120, and the charging interface 112 is used for connecting a charging power supply.
In this embodiment, when the charging interface 112 is powered on, the charging chip 111 may output a charging current to the battery 120 through the output terminal BAT, thereby charging the battery 120.
To sum up, the embodiment of the present invention provides a battery activation device and a terminal device, where the battery activation device includes a charging module, a battery and a power supply module, both the charging module and the power supply module are electrically connected to the battery, the charging module charges the battery when being connected to a charging power supply, and the power supply module keeps a shutdown state when the battery is in an overdischarge protection state, so that the voltage of the battery reaches an overdischarge release voltage. Because the power supply module keeps the off state when the charging module charges the battery in the over-discharge protection state, the load connected with the power supply module can not consume electric energy, so that the current consumption of the battery is reduced, which is equivalent to that the charging module only charges the battery, so that the battery can be charged and activated by a small pre-charging current, the battery can be charged to a full-charge state, and the service time and the standby time of the terminal equipment are prolonged.
In the power supply module, the delay characteristic of the delay circuit is utilized to control the MCU in the terminal equipment and the power supply of the peripheral equipment, so that the purposes of disconnecting the load and independently charging the battery are achieved, and the activation of the overdischarge battery is effectively realized; by utilizing the time delay characteristic of the time delay circuit, the impact current brought in the battery assembling process can be inhibited, the risk that the impact current damages an electronic element is reduced, the maintenance cost is reduced, and the product assembling yield is improved; the voltage division function of the voltage division circuit is utilized, so that the delay curve of the delay circuit is more gentle, the delay time is increased, and the starting time of the power supply chip is further delayed after the battery is over-discharged and activated.
In addition, the battery activation device provided by the embodiment of the invention has the advantages of simple structure and low cost, and can realize the activation of the over-discharge battery without disassembling the terminal equipment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The battery activation device is characterized by comprising a charging module, a battery and a power supply module, wherein the charging module and the power supply module are electrically connected with the battery;
the charging module is used for charging the battery when being connected with a charging power supply;
the power supply module is used for keeping a closed state when the battery is in an over-discharge protection state, so that the voltage of the battery reaches an over-discharge release voltage.
2. The battery activation device according to claim 1, wherein the power supply module includes a power supply chip and a power supply control circuit, an input end of the power supply chip is electrically connected to the battery, one end of the power supply control circuit is electrically connected to the battery, and the other end of the power supply control circuit is electrically connected to an enable end of the power supply chip;
the power supply control circuit is used for controlling the voltage of the enabling end to be lower than the starting voltage of the power supply chip when the battery is in an over-discharge protection state, so that the power supply chip keeps a closed state.
3. The battery activation device as claimed in claim 2, wherein the power supply control circuit comprises a delay circuit, and the delay circuit is further configured to increase the time for the voltage of the enable terminal to reach the turn-on voltage after the voltage of the battery reaches an overdischarge release voltage, so as to delay the turn-on time of the power supply chip.
4. The battery activation device as claimed in claim 3, wherein the delay circuit comprises a first resistor and a first capacitor, the first resistor and the first capacitor are connected in series between the battery and ground, and the enable terminal of the power supply chip is electrically connected between the first resistor and the first capacitor.
5. The battery activation device of claim 4, wherein the delay circuit further comprises a second resistor connected in parallel with the first capacitor.
6. The battery activation device according to claim 2, wherein the power supply control circuit includes a voltage divider circuit, the voltage divider circuit includes a first resistor and a second resistor, the first resistor and the second resistor are connected in series between the battery and ground, and an enable terminal of the power supply chip is electrically connected between the first resistor and the second resistor.
7. The battery activation device of claim 2, wherein the power module further comprises a second capacitor, a third capacitor, a fourth capacitor, and a fifth capacitor;
the second capacitor and the third capacitor are electrically connected between the input end of the power supply chip and the ground, and the fourth capacitor and the fifth capacitor are electrically connected between the output end of the power supply chip and the ground.
8. The battery activation device of claim 1, wherein the charging module comprises a charging chip and a charging interface, an input end of the charging chip is electrically connected with the charging interface, an output end of the charging chip is electrically connected with the battery, and the charging interface is used for connecting a charging power supply.
9. A terminal device, characterized in that it comprises a battery activation device according to any one of claims 1 to 8.
CN202010995789.4A 2020-09-21 2020-09-21 Battery activation device and terminal equipment Pending CN112087036A (en)

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Application publication date: 20201215