Wearable device battery connection circuit protection device and wearable device

Abstract

The utility model discloses a wearable equipment battery connection circuit protection device and wearable equipment, the device comprises a power supply interface, a power supply connection circuit and an LED, the power supply connection circuit comprises a capacitor protection device, a first capacitor, a second capacitor, a voltage stabilizing diode and a first protection diode, and the power supply interface is connected to equipment to be powered through the LED; the first end of the capacitor protection device is connected to the power interface, the second end of the capacitor protection device is connected with the first end of the first capacitor and the first end of the second capacitor, the second end of the first capacitor and the second end of the second capacitor are connected to a grounding pin of the wearable device, and the first end of the voltage stabilizing diode and the first end of the first protection diode are connected to the power interface; the second end of the voltage stabilizing diode and the second end of the first protection diode are connected to a grounding pin of the wearable device. The capacitor protection device is arranged to prevent heating when the capacitor is short-circuited due to water inflow, so that the wearable equipment or a user is prevented from being burnt out.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of smart devices, and in particular to a wearable device battery connection circuit protection device and a wearable device. Background Art

[0002] Wearable devices have become extremely popular in recent years. Wearable devices are portable devices that are worn directly on the body or integrated into clothing or accessories. Wearable devices are more than just hardware devices; they enable powerful functionality through software support, data interaction, and cloud-based interaction. Wearable devices are poised to significantly transform our lives and perceptions.

[0003] Currently, wearable devices on the market are equipped with rechargeable batteries that need to be recharged after depletion to ensure proper function. The battery in a wearable device is connected to the motherboard via a connecting circuit, powering various components. This connecting circuit contains capacitors. If water enters the wearable device, this capacitor may short-circuit. This short-circuited capacitor can become a continuous heat source, potentially damaging the wearable device and even injuring the user. Therefore, a protection circuit is urgently needed to prevent this short-circuited capacitor from becoming a heat source. Summary of the Invention

[0004] The embodiment of the utility model provides a wearable device battery connection circuit protection device and a wearable device, which can ensure that the capacitor will not become a heat source when water enters the capacitor and short-circuits, thereby preventing the wearable device from being burned.

[0005] In a first aspect, an embodiment of the present invention provides a wearable device battery connection circuit protection device, comprising: a power interface, a power connection circuit, and an LED;

[0006] The power supply connection circuit includes a capacitor protection device, a first capacitor, a second capacitor, a voltage stabilizing diode and a first protection diode;

[0007] The power interface is connected to the device to be powered via an LED, the first end of the capacitor protection device is connected to the power interface, and the second end of the capacitor protection device is connected to the first end of the first capacitor and the first end of the second capacitor respectively;

[0008] The second ends of the first capacitor and the second capacitor are connected to the ground pin of the wearable device; the first ends of the voltage regulator diode and the first protection diode are connected to the power interface; the second ends of the voltage regulator diode and the first protection diode are connected to the ground pin of the wearable device.

[0009] Optionally, the device to be powered is a motherboard, the power interface is a first pin of a power supply battery of the wearable device, and the power supply battery further includes a second pin and a third pin; the protection device further includes a motherboard NTC connection circuit and a motherboard current sampling connection circuit;

[0010] The second pin of the power supply battery is connected to the ADC pin of the NTC of the mainboard through the mainboard NTC connection circuit; the third pin of the power supply battery is connected to the current sampling ADC pin of the mainboard through the mainboard current sampling connection circuit.

[0011] Optionally, the mainboard NTC connection circuit includes a first resistor, a second resistor and a second protection diode;

[0012] The second pin of the power supply battery is connected to the first end of the first resistor, and the second end of the first resistor is connected to the ADC pin of the NTC of the motherboard; the first end of the second resistor is connected to the ground pin of the motherboard, and the second end of the second resistor is connected to the second end of the first resistor; the first end of the second protection diode is connected to the ground pin of the motherboard, and the second end of the second protection diode is connected to the first end of the first resistor.

[0013] Optionally, the mainboard current sampling connection circuit includes a third resistor and a jumper point;

[0014] The third pin of the power supply battery is connected to the first end of the jumper point, and the second end of the jumper point is connected to the current sampling ADC pin of the mainboard; the first end of the third resistor is connected to the ground pin of the mainboard, and the second end of the third resistor is connected to the first end of the jumper point.

[0015] Optionally, the power supply battery is a welding battery.

[0016] Optionally, the capacitor protection device is a protection resistor.

[0017] Optionally, the capacitor protection device is a fuse.

[0018] Optionally, the capacitor protection device is a protection IC.

[0019] Optionally, the capacitive protection device is a DCDC IC.

[0020] In a second aspect, an embodiment of the present invention further provides a wearable device, comprising the wearable device battery connection circuit protection device as described in any one of the first aspects.

[0021] The wearable device battery connection circuit protection device provided by the embodiment of the present invention includes: a power interface, a power supply connection circuit and an LED. The power supply connection circuit includes a capacitor protection device, a first capacitor, a second capacitor, a voltage-stabilizing diode and a first protection diode. The power interface is connected to the device to be powered through the LED. The first end of the capacitor protection device is connected to the power interface. The second end of the capacitor protection device is connected to the first end of the first capacitor and the first end of the second capacitor respectively. The second ends of the first capacitor and the second capacitor are connected to the ground pin of the wearable device. The first end of the voltage-stabilizing diode and the first protection diode are connected to the power interface; the second ends of the voltage-stabilizing diode and the first protection diode are connected to the ground pin of the wearable device. By providing a capacitor protection device, heating is prevented when the capacitor is short-circuited due to water ingress, thereby avoiding burning the wearable device or burning the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic structural diagram of a battery connection circuit protection device for a wearable device provided by an embodiment of the present invention;

[0024] Figure 2 A schematic structural diagram of a battery connection circuit protection device for a wearable device provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of a wearable device battery connection circuit protection device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only some, not all, of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0027] Figure 1 The structure of a wearable device battery connection circuit protection device provided by the present invention is exemplarily shown. The wearable device battery connection circuit protection device may include: a power interface 1101, a power supply connection circuit 120 and an LED 150.

[0028] The power supply connection circuit 120 includes a capacitor protection device 121 , a first capacitor C1 , a second capacitor C2 , a voltage stabilizing diode ZD and a first protection diode VD1 .

[0029] The power interface 1101 is connected to the device to be powered through the LED 150 , the first end 1211 of the capacitor protection device 121 is connected to the power interface 1101 , and the second end 1212 of the capacitor protection device 121 is connected to the first end 1221 of the first capacitor C1 and the first end 1231 of the second capacitor C2 respectively.

[0030] The second end 1222 of the first capacitor C1 and the second end 1232 of the second capacitor C2 are connected to the ground pin of the wearable device; the first end 1241 of the Zener diode ZD and the first end 1251 of the first protection diode VD1 are connected to the power interface 1101; the second end 1242 of the Zener diode ZD and the second end 1252 of the first protection diode VD1 are connected to the ground pin of the wearable device.

[0031] By providing the capacitor protection device 121, the capacitor in the wearable device will not burn or heat up when it is short-circuited due to water ingress, thereby preventing other components of the wearable device from being burned and further preventing burns to the user.

[0032] It should be noted that the capacitor protection device 121 may be a protection resistor. The resistance of the protection resistor can be calculated using the following formula: Protection resistor resistance R = resistance power W / maximum current I that the resistor needs to withstand 2 Select an appropriate protection resistor based on the maximum current in the actual usage scenario.

[0033] That is to say, in actual use, a protection resistor with reasonable parameters can be connected in series on the VBAT circuit path. When the current exceeds the resistance limit, the protection resistor will disconnect, thereby disconnecting the short-circuit capacitor from the power supply to prevent users from being burned.

[0034] Optionally, the capacitor protection device 121 may also be a protection IC, a DCDC IC, or a fuse. When a protection resistor is used, compared to a protection IC, a DCDC IC, or a fuse, the space requirement for the device is low and the cost is lower.

[0035] In order to better explain the above embodiment, the specific implementation method is described below by taking the device to be powered as a motherboard as an example. Figure 2 In the structure shown, the device to be powered is a motherboard, and the power interface 1101 is a first pin 1101 of a power supply battery 110 of the wearable device. The power supply battery 110 also includes a second pin 1102 and a third pin 1103 .

[0036] Furthermore, the protection device also includes a motherboard NTC connection circuit 130 and a motherboard current sampling connection circuit 140. The second pin 1102 of the power supply battery 110 is connected to the ADC pin of the motherboard's NTC through the motherboard NTC connection circuit 130; the third pin 1103 of the power supply battery 110 is connected to the current sampling ADC pin of the motherboard through the motherboard current sampling connection circuit 140.

[0037] It should be noted that the mainboard NTC connection circuit 130 may include a first resistor R1, a second resistor R2 and a second protection diode VD2.

[0038] The second pin 1102 of the power supply battery 110 is connected to the first end 1311 of the first resistor R1, and the second end 1312 of the first resistor R1 is connected to the ADC pin of the NTC of the motherboard; the first end 1321 of the second resistor R2 is connected to the ground pin of the motherboard, and the second end 1322 of the second resistor R2 is connected to the second end 1312 of the first resistor R1; the first end 1331 of the second protection diode VD2 is connected to the ground pin of the motherboard, and the second end 1332 of the second protection diode VD2 is connected to the first end 1311 of the first resistor R1.

[0039] The mainboard current sampling connection circuit 140 may include a third resistor R3 and a jumper point AG.

[0040] The third pin 1103 of the power supply battery 110 is connected to the first end 1421 of the jumper point AG, and the second end 1422 of the jumper point AG is connected to the current sampling ADC pin of the mainboard; the first end 1411 of the third resistor R3 is connected to the ground pin of the mainboard, and the second end 1412 of the third resistor R3 is connected to the first end 1421 of the jumper point.

[0041] It should be noted that the power supply battery 110 may be a welding battery.

[0042] Based on the same technical concept, an embodiment of the present invention also provides a wearable device, which may include the above-mentioned wearable device battery connection circuit protection device.

[0043] Based on the above embodiments, the wearable device battery connection circuit protection device provided by the embodiment of the present invention may include a power interface, a power connection circuit and an LED. The power connection circuit includes a capacitor protection device, a first capacitor, a second capacitor, a voltage regulator diode and a first protection diode. The power interface is connected to the device to be powered through the LED. The first end of the capacitor protection device is connected to the power interface. The second end of the capacitor protection device is connected to the first end of the first capacitor and the second capacitor respectively. The second ends of the first capacitor and the second capacitor are connected to the ground pin of the wearable device. The first end of the voltage regulator diode and the first protection diode are connected to the power interface; the second ends of the voltage regulator diode and the first protection diode are connected to the ground pin of the wearable device. By setting a capacitor protection device, the capacitor is prevented from heating when it is short-circuited due to water ingress, thereby avoiding burning the wearable device or burning the user.

[0044] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0045] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A wearable device battery connection circuit protection device, characterized in that: include: Power interface, power connection circuit and LED; The power supply connection circuit includes a capacitor protection device, a first capacitor, a second capacitor, a voltage stabilizing diode and a first protection diode; The power interface is connected to the device to be powered via an LED, the first end of the capacitor protection device is connected to the power interface, and the second end of the capacitor protection device is connected to the first end of the first capacitor and the first end of the second capacitor respectively; The second ends of the first capacitor and the second capacitor are connected to the ground pin of the wearable device; the first ends of the voltage regulator diode and the first protection diode are connected to the power interface; The second ends of the voltage stabilizing diode and the first protection diode are connected to the ground pin of the wearable device.

2. The protection device according to claim 1, characterized in that The device to be powered is a motherboard, the power interface is a first pin of a power supply battery of the wearable device, and the power supply battery further includes a second pin and a third pin; the protection device further includes a motherboard NTC connection circuit and a motherboard current sampling connection circuit; The second pin of the power supply battery is connected to the ADC pin of the NTC of the mainboard through the mainboard NTC connection circuit; the third pin of the power supply battery is connected to the current sampling ADC pin of the mainboard through the mainboard current sampling connection circuit.

3. The protection device according to claim 2, characterized in that The mainboard NTC connection circuit includes a first resistor, a second resistor and a second protection diode; The second pin of the power supply battery is connected to the first end of the first resistor, and the second end of the first resistor is connected to the ADC pin of the NTC of the motherboard; the first end of the second resistor is connected to the ground pin of the motherboard, and the second end of the second resistor is connected to the second end of the first resistor; A first end of the second protection diode is connected to the ground pin of the mainboard, and a second end of the second protection diode is connected to the first end of the first resistor.

4. The protection device according to claim 2, characterized in that The mainboard current sampling connection circuit includes a third resistor and a jumper point; The third pin of the power supply battery is connected to the first end of the jumper point, and the second end of the jumper point is connected to the current sampling ADC pin of the mainboard; the first end of the third resistor is connected to the ground pin of the mainboard, and the second end of the third resistor is connected to the first end of the jumper point.

5. The protection device according to claim 2, characterized in that: The power supply battery is a welding battery.

6. The protection device according to any one of claims 1 to 5, characterized in that: The capacitor protection device is a protection resistor.

7. The protection device according to any one of claims 1 to 5, characterized in that: The capacitor protection device is a fuse.

8. The protection device according to any one of claims 1 to 5, characterized in that: The capacitor protection device is a protection IC.

9. The protection device according to any one of claims 1 to 5, characterized in that: The capacitor protection device is a DCDCIC.

10. A wearable device, characterized in that: The invention comprises a wearable device battery connection circuit protection device as described in any one of claims 1 to 9.

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