Notebook battery activation circuit, battery activation system and electronic equipment

Abstract

The embodiment of the utility model discloses an activation circuit of a notebook battery, an activation system of the battery and electronic equipment. The activation circuit of the battery comprises a voltage stabilizer, a control module, a voltameter and an isolation starting module, the control module is connected in series between the anode end of the battery and the anode end of the charge-discharge interface and is used for controlling the battery to start and charge and discharge; the voltage stabilizer is connected with the positive electrode end of the battery and outputs first voltage; the isolation starting module is provided with a first input end and a second input end which are respectively connected with the voltage stabilizer and the signal generation circuit, a first output end and a second output end are respectively connected with the positive end and the negative end of the charging and discharging interface, and when the battery is in a to-be-activated state, the isolation starting module is configured to respond to an activation signal sent by the signal generation circuit; converting the first voltage into a second voltage and outputting the second voltage to the charging and discharging interface, wherein the level extreme value of the second voltage is higher than the level of the first voltage; and the voltameter responds to the received second voltage and triggers the control module to activate the battery after a first preset time.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an activation circuit of a notebook battery, a battery activation system and electronic equipment. Background Art

[0002] Inside the lithium-ion battery pack of a laptop battery, there is a dedicated battery management system between the battery and the charging and discharging port connected to the outside world to manage the battery and control the charging and discharging of the battery. After the battery enters an inactive state, the fuel gauge in the battery management system is also completely turned off. If the battery is to be activated again, the charging and discharging port must first be connected to an external power source for charging before the battery can be activated. However, due to the limitations of the battery's usage scenarios, it is difficult to conveniently obtain an external power source to activate the battery in all situations. Utility Model Content

[0003] The utility model provides a laptop battery activation circuit, a battery activation system and electronic equipment, aiming to effectively solve the problem in the prior art that laptop battery activation is limited by the conditions of connecting to an external power source and the activation convenience is poor.

[0004] According to a first aspect of the utility model, the utility model provides an activation circuit for a laptop battery, including a voltage regulator, a control module, a power meter and an isolation startup module; the control module is used to be connected in series between the positive terminal of the battery and the positive terminal of the charge and discharge interface, and the negative terminal of the battery is connected to the negative terminal of the charge and discharge interface to form a working circuit of the battery, and the control module is used to control the startup of the battery and charge and discharge through the working circuit; the input terminal of the voltage regulator is connected to the positive terminal of the battery to output a constant first voltage; the isolation startup module has a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal is connected to the output terminal of the voltage regulator, and the second input terminal is connected to the output terminal of the signal generating circuit The first output terminal is connected to the positive terminal of the charge and discharge interface, and the second output terminal is connected to the negative terminal of the charge and discharge interface. When the battery is in a waiting state, the isolation startup module is configured to respond to the activation signal sent by the signal generating circuit, convert the first voltage into a second voltage and output it to the first output terminal and the second output terminal, wherein the level extreme value of the second voltage is higher than the level of the first voltage; the fuel meter is connected to the control module, and the fuel meter includes a detection terminal connected to the positive terminal of the charge and discharge interface. The fuel meter is configured to respond to receiving the second voltage. The fuel meter is in a working mode after a first preset time to trigger the control module to activate the battery.

[0005] Furthermore, the isolation startup module includes an isolation unit and a startup unit; the first input end of the startup unit is connected to the output end of the voltage regulator, the second input end is connected to the output end of the signal generating circuit, the output end of the startup unit is connected to the input end of the isolation unit, and the startup unit is configured to connect the voltage regulator and the isolation unit in response to the activation signal sent by the signal generating circuit, and output the first voltage to the isolation unit; the first output end of the isolation unit is connected to the positive end of the charge and discharge interface, the first output end of the isolation unit is connected to the negative end of the charge and discharge interface, and the isolation unit is used to generate the second voltage according to the first voltage, and output the second voltage to the positive end of the charge and discharge interface.

[0006] Furthermore, the isolation unit includes a charging circuit, a unidirectional transmission circuit and a discharging circuit; the input end of the charging circuit is connected to the output end of the starting unit, the output end of the charging circuit is connected to the input end of the unidirectional transmission circuit and the input end of the discharging circuit, the charging circuit is used to generate the second voltage according to the first voltage, and output the second voltage to the unidirectional transmission circuit; the output end of the unidirectional transmission circuit is connected to the positive end of the charging and discharging interface, the unidirectional transmission circuit is used to unidirectionally output the second voltage to the positive end of the charging and discharging interface; the output end of the discharging circuit is connected to the negative end of the charging and discharging interface to discharge the charging circuit.

[0007] Furthermore, the second voltage is a peak voltage, and the second voltage has a preset level extreme value.

[0008] Furthermore, the startup unit is capable of receiving an activation signal, and according to the activation signal, enables the isolation unit and the voltage regulator to maintain communication within a second preset time.

[0009] Furthermore, the charging circuit includes a first capacitor, a first end of the first capacitor is connected to the output end of the starting unit, and a second end of the first capacitor is connected to the input end of the unidirectional transmission circuit and the input end of the discharge circuit.

[0010] Furthermore, the unidirectional transmission circuit includes a first diode, a first end of the first diode is connected to the output end of the charging circuit and the input end of the discharging circuit, and a second end of the first diode is connected to the positive terminal of the charging and discharging interface.

[0011] Furthermore, the discharge circuit includes a first resistor, a first end of the first resistor is connected to the output end of the charging circuit and the input end of the unidirectional transmission circuit, and a second end of the first resistor is connected to the negative terminal of the charge and discharge interface.

[0012] According to the second aspect of the utility model, the utility model also provides a battery activation system, comprising a battery and an activation circuit of the battery as described in any one of the first aspects above, the positive terminal of the battery is coupled to the positive terminal of the charge and discharge interface through the activation circuit of the battery, the negative terminal of the battery is coupled to the negative terminal of the charge and discharge interface through the activation circuit of the battery, and the activation circuit of the battery is used to activate the battery according to the activation signal sent by the signal generating circuit, so that the charge and discharge circuit of the battery is connected.

[0013] According to a third aspect of the utility model, the utility model further provides an electronic device, wherein the electronic device comprises the battery activation system as described in the second aspect.

[0014] Through one or more of the above embodiments of the present invention, at least the following technical effects can be achieved:

[0015] In the technical solution disclosed in the utility model, the output end of the voltage regulator and the control end of the power meter are connected by an isolation starting module, so that the self-activation start of the battery is realized, which solves the problem in the prior art that the activation of the battery is limited by the conditions of connecting to an external power supply and the activation convenience is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0017] Figure 1 A schematic diagram of the structure of an activation circuit for a laptop battery provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of the isolation start module provided in an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of an isolation unit provided in an embodiment of the utility model;

[0020] Reference numerals: battery activation circuit 100; fuel gauge 10; control module 20; voltage regulator 30; isolation start-up module 40; signal generating circuit 200. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

[0023] The present utility model embodiment provides a battery activation circuit 100, such as Figure 1 As shown, the system includes a voltage regulator 30 , a control module 20 , a fuel meter 10 and an isolation startup module 40 .

[0024] The control module 20 is used to be connected in series between the positive terminal B+ of the battery and the positive terminal P+ of the charge and discharge interface, and the negative terminal B- of the battery is connected to the negative terminal P- of the charge and discharge interface to form a working circuit of the battery. The control module 20 is used to control the start-up of the battery and charge and discharge through the working circuit.

[0025] The input terminal of the voltage regulator 30 is connected to the positive terminal B+ of the battery, and is used to output a constant first voltage V1. In some embodiments, the voltage regulator 30 can be a low-dropout regulator (LDO), which can provide a stable DC output voltage.

[0026] The isolation startup module 40 has a first input terminal, a second input terminal, a first output terminal and a second output terminal. The first input terminal is connected to the output terminal of the voltage regulator 30, the second input terminal is connected to the output terminal of the signal generating circuit 200, the first output terminal is connected to the positive terminal P+ of the charge and discharge interface, and the second output terminal is connected to the negative terminal P- of the charge and discharge interface. When the battery is in the activation state, the isolation startup module 40 is configured to respond to the activation signal sent by the signal generating circuit 200, convert the first voltage V1 into a second voltage V2 and output it to the first output terminal and the second output terminal, wherein the level extreme value of the second voltage V2 is higher than the level of the first voltage V1.

[0027] The fuel gauge 10 is coupled to the control module 20, such as Figure 1 As shown, there are at least two groups of interconnected terminals between the electricity meter 10 and the control module 20. The functions of the terminals between the electricity meter 10 and the control module 20 include communication data transmission and status information transmission.

[0028] The fuel meter 10 further includes a detection terminal connected to the positive terminal P+ of the charge and discharge interface, and the fuel meter is configured to respond to receiving the second voltage V2, and after a first preset time after receiving the second voltage V2, the fuel meter enters the working mode to trigger the control module to activate the battery. Exemplarily, the first preset time can be 150-250ms.

[0029] In some embodiments, Figure 2 As shown, the isolation and starting module 40 includes an isolation unit 41 and a starting unit 42 .

[0030] The first input terminal of the startup unit 42 is connected to the output terminal of the regulator 30, the second input terminal is connected to the output terminal of the signal generating circuit 200, the output terminal of the startup unit 42 is connected to the input terminal of the isolation unit 41, and the startup unit 42 is configured to connect the regulator 30 and the isolation unit 41 in response to the activation signal, and output the first voltage V1 to the isolation unit 41.

[0031] In some embodiments, the signal generating circuit 200 is capable of sending an activation signal. For example, the fuel meter of an electronic device having a battery is turned off after assembly or replacement of the battery. The signal generating circuit 200 may include a switch. When a button of the electronic device is pressed, the switch is closed, and the signal generating circuit 200 sends an activation signal to the starting unit 42.

[0032] The start-up unit 42 can receive an activation signal. When the start-up unit 42 receives the activation signal, the isolation unit 41 and the regulator 30 are connected for a second preset time according to the activation signal. The regulator 30 outputs the first voltage V1 to the isolation unit 41 in the connected state.

[0033] The first output end of the isolation unit 41 is connected to the positive terminal P+ of the charge and discharge interface, and the second output end of the isolation unit 41 is connected to the negative terminal P- of the charge and discharge interface. The isolation unit 41 is used to generate a second voltage V2 according to the first voltage V1, and output the second voltage V2 to the positive terminal P+ of the charge and discharge interface to simulate the level of the positive terminal P+ of the charge and discharge interface when the battery is connected to an external power supply. After the isolation unit 41 outputs the second voltage V2, the isolation unit 41 releases the voltage carried by each component in the unit through the second output end.

[0034] In some embodiments, Figure 2 As shown, the isolation unit 41 includes a charging circuit 411 , a unidirectional transmission circuit 412 and a discharging circuit 413 .

[0035] The input end of the charging circuit 411 is connected to the output end of the starting unit 42, and the output end of the charging circuit 411 is connected to the input end of the unidirectional transmission circuit 412 and the input end of the discharge circuit 413. The charging circuit 411 is used to generate a second voltage V2 according to the first voltage V1 and output the second voltage V2 to the unidirectional transmission circuit 412.

[0036] In some embodiments, Figure 3 As shown, the charging circuit 411 may include a first capacitor C1, a first end of the first capacitor C1 is connected to the input end of the start-up unit 42, and a second end of the first capacitor C1 is connected to the input end of the unidirectional transmission circuit 412 and the input end of the discharge circuit 413. When the first voltage V1 is applied to the first end of the first capacitor C1, the first capacitor C1 starts to charge. The first voltage V1 is not continuously applied to the first capacitor C1, but is only applied to the first capacitor C1 within a second preset time. Therefore, after the second preset time, the first capacitor C1 starts to discharge, and a second voltage V2 is released from the second end of the first capacitor C1. The second voltage V2 is a peak voltage. The second voltage V2 is only maintained for a third preset time and has a preset level extreme value within the third preset time. The level extreme value of the second voltage V2 is higher than the constant value of the first voltage V1.

[0037] The output end of the unidirectional transmission circuit 412 is connected to the positive terminal P+ of the charge and discharge interface, and the unidirectional transmission circuit 412 is used to unidirectionally output the second voltage V2 to the positive terminal P+ of the charge and discharge interface.

[0038] In some embodiments, Figure 3 As shown, the unidirectional transmission circuit 412 includes a first diode D1, a first end of the first diode D1 is connected to the output end of the charging circuit 411 and the input end of the discharging circuit 413, and a second end of the first diode D1 is connected to the positive terminal P+ of the charging and discharging interface.

[0039] The output end of the discharge circuit 413 is connected to the negative terminal P− of the charge-discharge interface to discharge the charging circuit 411 .

[0040] In some embodiments, Figure 3 As shown, the discharge circuit 413 includes a first resistor R1, a first end of the first resistor R1 is connected to the output end of the charging circuit 411 and the input end of the unidirectional transmission circuit 412, and a second end of the first resistor R1 is connected to the negative terminal P- of the charge and discharge interface.

[0041] In a specific application example of the present utility model, the following is adopted: Figure 3The circuit structure of the isolated startup module 40 is shown, and the first voltage V1 output by the voltage regulator 30 is a constant 3V voltage. The startup unit 42 short-circuits the output end of the voltage regulator 30 and the input end of the isolation unit 41, and disconnects after 1s of short-circuiting. Within 1s, the first voltage V1 charges the first capacitor C1. After 1s, the first capacitor C1 releases the second voltage V2, which is output to the positive terminal P+ of the charge and discharge interface through the first unidirectionally conducting diode D1 to simulate the level of the charge and discharge interface when the laptop battery is connected to an external power supply through the charge and discharge interface. After the power meter 10 detects a voltage greater than 3V, it enters the working mode after a first preset time delay, and sends a command to the control module 20, and the control module 20 activates the battery.

[0042] Since the second voltage V2 disappears when the fuel gauge 10 enters the working mode, the second voltage V2 will not affect the normal operation of the control module 20 and the fuel gauge 10. After activation, the residual power on the first capacitor is discharged to the ground through the first resistor R1, and the resistance of the first resistor R1 is 1MΩ.

[0043] The utility model sets an isolated starting module between the first voltage and the fuel gauge control end, thereby avoiding the possibility of directly short-circuiting the first voltage and the fuel gauge, which may cause the output end of the voltage regulator to be broken down after being started. It can realize self-activation of the battery without an external battery, greatly improving the convenience of battery activation.

[0044] An embodiment of the utility model also provides a battery activation system, including a battery and an activation circuit of the above-mentioned battery, the positive terminal of the battery is coupled to the positive terminal of the charge and discharge interface through the activation circuit of the battery, and the negative terminal of the battery is coupled to the negative terminal of the charge and discharge interface through the activation circuit of the battery. The activation circuit of the battery is used to activate the battery according to an activation signal so that the charge and discharge circuit of the battery is connected.

[0045] An embodiment of the utility model further provides an electronic device, which comprises the above-mentioned battery activation system.

[0046] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the utility model. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0047] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0048] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein may be implemented by electronic hardware, or a combination of computer software and electronic hardware.

[0049] In the embodiments provided by the present utility model, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0050] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0051] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0052] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. An activation circuit for a laptop battery, characterized in that: It comprises a voltage regulator (30), a control module (20), an electric meter (10) and an isolation start-up module (40); The control module (20) is used to be connected in series between the positive terminal (B+) of the battery and the positive terminal (P+) of the charge and discharge interface, and the negative terminal (B-) of the battery is connected to the negative terminal (P-) of the charge and discharge interface, so as to form a working circuit of the battery, and the control module (20) is used to control the start-up of the battery and to charge and discharge through the working circuit; The input end of the voltage regulator (30) is used to be connected to the positive terminal (B+) of the battery, and is used to output a first voltage (V1); The isolation startup module (40) has a first input end, a second input end, a first output end, and a second output end, wherein the first input end is connected to the output end of the voltage regulator (30), the second input end is connected to the output end of the signal generating circuit (200), the first output end is connected to the positive terminal (P+) of the charge and discharge interface, and the second output end is connected to the negative terminal (P-) of the charge and discharge interface. When the battery is in a waiting state for activation, the isolation startup module (40) is configured to respond to an activation signal sent by the signal generating circuit (200), convert the first voltage (V1) into a second voltage (V2) and output it to the first output end and the second output end, wherein the level extreme value of the second voltage (V2) is higher than the level of the first voltage (V1); The fuel meter (10) is connected to the control module (20), and the fuel meter (10) comprises a detection terminal connected to the positive terminal (P+) of the charge and discharge interface. The fuel meter is configured to trigger the control module to activate the battery after a first preset time in response to receiving the second voltage (V2).

2. The activation circuit according to claim 1, characterized in that: The isolation and starting module (40) comprises an isolation unit (41) and a starting unit (42); The first input end of the start-up unit (42) is connected to the output end of the voltage regulator (30), the second input end is connected to the output end of the signal generating circuit (200), the output end of the start-up unit (42) is connected to the input end of the isolation unit (41), and the start-up unit (42) is configured to connect the voltage regulator (30) and the isolation unit (41) in response to an activation signal sent by the signal generating circuit (200), and output the first voltage (V1) to the isolation unit (41); The first output end of the isolation unit (41) is connected to the positive terminal (P+) of the charge and discharge interface, the second output end of the isolation unit (41) is connected to the negative terminal (P-) of the charge and discharge interface, and the isolation unit (41) is used to generate the second voltage (V2) according to the first voltage (V1), and output the second voltage (V2) to the positive terminal (P+) of the charge and discharge interface.

3. The activation circuit according to claim 2, characterized in that: The isolation unit (41) comprises a charging circuit (411), a unidirectional transmission circuit (412) and a discharging circuit (413); The input end of the charging circuit (411) is connected to the output end of the starting unit (42), the output end of the charging circuit (411) is connected to the input end of the unidirectional transmission circuit (412) and the input end of the discharge circuit (413), and the charging circuit (411) is used to generate the second voltage (V2) according to the first voltage (V1), and output the second voltage (V2) to the unidirectional transmission circuit (412); The output end of the unidirectional transmission circuit (412) is connected to the positive terminal (P+) of the charge and discharge interface, and the unidirectional transmission circuit (412) is used to unidirectionally output the second voltage (V2) to the positive terminal (P+) of the charge and discharge interface; The output end of the discharge circuit (413) is connected to the negative terminal (P-) of the charge-discharge interface to discharge the charging circuit (411).

4. The activation circuit according to claim 3, characterized in that: The first voltage (V1) is a constant voltage, the second voltage (V2) is a peak voltage, and the second voltage (V2) has a preset level extreme value.

5. The activation circuit according to claim 2, characterized in that: The start-up unit (42) is capable of receiving the activation signal and, based on the activation signal, maintaining communication between the isolation unit (41) and the voltage regulator (30) for a second preset time.

6. The activation circuit according to claim 3, characterized in that: The charging circuit (411) comprises a first capacitor (C1), a first end of the first capacitor (C1) being connected to an output end of the starting unit (42), and a second end of the first capacitor (C1) being connected to an input end of the unidirectional transmission circuit (412) and an input end of the discharge circuit (413).

7. The activation circuit according to claim 3, characterized in that: The unidirectional transmission circuit (412) comprises a first diode (D1), a first end of the first diode (D1) being connected to an output end of the charging circuit (411) and an input end of the discharging circuit (413), and a second end of the first diode (D1) being connected to a positive terminal (P+) of the charging and discharging interface.

8. The activation circuit according to claim 3, characterized in that: The discharge circuit (413) comprises a first resistor (R1), a first end of the first resistor (R1) being connected to an output end of the charging circuit (411) and an input end of the unidirectional transmission circuit (412), and a second end of the first resistor (R1) being connected to a negative terminal (P-) of the charge-discharge interface.

9. A battery activation system, comprising a battery and a battery activation circuit as claimed in any one of claims 1 to 8, characterized in that: The positive terminal (B+) of the battery is coupled to the positive terminal (P+) of the charge and discharge interface through the activation circuit of the battery, and the negative terminal (B-) of the battery is coupled to the negative terminal (P-) of the charge and discharge interface through the activation circuit of the battery. The activation circuit of the battery is used to activate the battery according to the activation signal sent by the signal generating circuit, so that the charge and discharge circuit of the battery is connected.

10. An electronic device, characterized in that: The electronic device comprises the battery activation system as claimed in claim 9.

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