Battery voltage measuring sheet with near field communication function

Abstract

The utility model relates to a battery voltage measuring piece with a near field communication function, which can be arranged in a battery jar of an electronic product to be electrically contacted with a battery to be measured, and comprises a substrate, a near field communication processor and an antenna coil, wherein the near field communication processor and the antenna coil are arranged on the substrate; wherein the edge of the substrate extends outwards to form two measuring pins for electrically contacting the battery to be measured, and when a user gets close to the antenna coil through an external inquiry device, the near field communication processor transmits the voltage value of the battery to be measured to the external inquiry device through the antenna coil, so that the battery to be measured can be detected. A user can immediately read the current electric quantity of the battery to be tested on the external inquiry device, so that the convenience of using the electronic product is improved.

Description

Technical Field

[0001] This utility model relates to a device for measuring battery voltage, and more particularly to a battery voltage measuring chip with near field communication (NFC) function. Background Technology

[0002] Many everyday electronic products use dry cell batteries (rechargeable batteries) as their power source. Examples include various remote controls, alarm clocks, and wireless 3C products (such as keyboards and mice), most of which contain several cylindrical batteries. When users actually use these electronic products, as the usage time increases, they will inevitably encounter situations where the battery power is insufficient, thus requiring replacement.

[0003] However, due to cost considerations, these battery-powered electronic products do not have the function of actively displaying battery level. Users often only notice the abnormal battery status when the battery is depleted or too low, causing the electronic product to malfunction. If there is no spare battery, it cannot be replaced in time, causing inconvenience in use. Utility Model Content

[0004] This invention addresses the issue that electronic products using batteries lack active voltage measurement capabilities. Therefore, it proposes a battery voltage measuring chip with near-field communication (NFC) functionality, which can be used to measure battery power and allows an external device to query battery power information at any time via NFC.

[0005] To achieve the aforementioned objectives, the battery voltage measuring chip with near-field communication function of this utility model can be installed inside a battery slot to measure the voltage of the battery under test. This utility model includes:

[0006] A substrate with two measurement pins extending outward from one edge, the two measurement pins being electrically connected to the battery under test to measure its voltage value;

[0007] A near-field communication processor is disposed on one surface of the substrate and electrically connected to two measurement pins;

[0008] An antenna coil is disposed on the substrate and electrically connected to the near-field communication processor. The voltage value of the battery under test can be transmitted to an external query device through the antenna coil.

[0009] This invention addresses the issue of existing electronic products powered by dry cell batteries. Without altering existing product design or safety certifications, by simply installing this invention inside the battery compartment and placing it in contact with the battery, users can quickly check the battery voltage using an external query device with near-field communication (NFC) capabilities, such as a mobile phone. Users can quickly and conveniently obtain the current available power of the electronic product and determine whether the battery needs to be replaced. Attached Figure Description

[0010] Figure 1 : Front perspective view of this utility model.

[0011] Figure 2 : Rear perspective view of this utility model.

[0012] Figures 3A to 3D This utility model is applied to the installation process of electronic products.

[0013] Figure 4 : An operational schematic diagram of this utility model using an external device for sensing. Detailed Implementation

[0014] Please refer to Figure 1 , 2 The diagram shown is a schematic of the battery voltage measuring chip (hereinafter referred to as voltage measuring chip 1) with near-field communication function of this utility model, which includes a substrate 10, a near-field communication processor 20, an antenna coil 22, and an electromagnetic wave absorbing sheet 30.

[0015] The substrate 10 may be a flexible dielectric substrate made of the same material as a flexible printed circuit board (FPC). The substrate 10 is flexible and can be bent under force. The substrate 10 has a first surface 11 and a second surface 12 facing each other, as described below. Figure 1 The first surface 11 shown is considered to be the front side of the substrate 10. Figure 2 The second surface 12 shown is considered the rear side of the substrate 10. Two measurement pins 13 extend outward from one edge of the substrate 10, with a predetermined distance between them. The front and rear surfaces of each measurement pin 13 are conductive. For example, the front and rear surfaces of the two measurement pins 13 are covered with a conductive layer 131, so the appearance of the two measurement pins 13 is equivalent to the gold finger contacts of a printed circuit board. The conductive layer 131 on the front and rear sides of each measurement pin 13 is electrically conductive and is used for electrical contact with the battery terminals in electronic products.

[0016] The near-field communication processor 20 (NFC MCU) may have a built-in analog-to-digital converter (ADC) circuit, or may work in conjunction with a conversion circuit disposed on the substrate 10 to implement the analog-to-digital conversion function. Two of the input terminals of the near-field communication processor 20 are electrically connected to the two measurement pins 13, for example, via lines formed on the substrate 10.

[0017] The antenna coil 22 is disposed on the first surface 11 of the substrate 10 and electrically connected to the near-field communication processor 20. Preferably, the antenna coil 22 is arranged in a multi-turn spiral pattern and is constructed of metal wire. The antenna coil 22 is used for bidirectional point-to-point wireless transmission and data exchange with an external device.

[0018] The electromagnetic wave absorbing sheet 30 is disposed on the second surface 12 of the substrate 10; it can be used to suppress electromagnetic interference (EMI) and prevent poor signal reading when the antenna coil 22 is close to metal. Preferably, the area of ​​the electromagnetic wave absorbing sheet 30 is sufficient to cover the distribution area of ​​the antenna coil 22.

[0019] Please refer to Figures 3A to 3D The diagram shown illustrates the installation steps of an electronic product in which this invention is actually applied. A battery slot is formed on the casing of the electronic product to accommodate a battery, and battery conductive sheets are respectively disposed at opposite ends inside the battery slot. Figure 3A , 3B As shown, after the cover plate A covering the battery compartment is removed, the voltage measuring chip 1 of this invention is placed inside the battery compartment. The two measuring pins 13 of the voltage measuring chip 1 electrically contact the battery conductive sheet inside the battery compartment. Preferably, when placing the voltage measuring chip 1, the electromagnetic wave absorbing sheet 30 faces the battery. (See also...) Figure 3C As shown, after placing the two batteries B inside the battery slot, the battery terminals at the ends of each battery B abut against the corresponding measuring pins 13, and the two measuring pins 13 can be fixedly clamped between the battery B and the battery conductive sheet; as shown Figure 3D As shown, since the substrate 10 of the voltage measuring piece 1 is a flexible substrate, the substrate 10 can be bent in the direction of the battery B, so that the substrate 10 is roughly flat above the surface of the battery B, and the electromagnetic wave absorbing sheet 30 of the substrate 10 can contact the battery B. Finally, the cover plate A is put back on the battery compartment.

[0020] When a user wants to check the real-time battery level of battery B, such as Figure 4As shown, an external query device 100 with Near Field Communication (NFC) functionality, such as a user's mobile phone, can be brought directly close to cover A. The antenna coil 22 of the voltage measuring chip 1 generates an induced electromotive force (EMF) upon receiving the electromagnetic signal from the external query device 100. This induced EMF allows the NFC processor 20 to measure the voltage value of battery B via two measurement pins 13. The processor then converts this voltage value into a digital voltage signal using an internal or external analog-to-digital converter circuit, and transmits this digital voltage signal to the external query device 100 via the antenna coil 22. Upon receiving the digital voltage signal, the external query device 100 displays the current voltage value of battery B on its display screen, for example, a value of "2.95V".

[0021] In another embodiment of this utility model, the near-field communication processor 20 of the voltage measuring chip 1 also has a voltage judgment function. The near-field communication processor 20 compares the voltage value of battery B with a preset value. In addition to the voltage value, the data transmitted from the voltage measuring chip 1 to the external query device 100 also includes text information representing the comparison result. For example, when the voltage value of battery B is greater than or equal to the preset value, the text information indicating the comparison result is OK, and the voltage value and the text information "3.14V OK" are displayed together on the display screen of the external query device 100. When the voltage value of battery B is not greater than the preset value, the text information indicating the comparison result is NG, and "2.21V NG" is displayed together on the display screen of the external query device 100.

[0022] This invention provides real-time battery voltage measurement for existing electronic products such as remote controls, alarm clocks, and wireless mice. Without altering existing product design or safety certifications, users can simply install this invention inside the battery compartment and make electrical contact with the battery. They can then quickly and immediately check the battery level using a mobile phone with near-field communication (NFC) capabilities. Furthermore, this invention utilizes the induced electromotive force generated when the external query device approaches as its power source, without actively consuming the battery's power. Even if the battery's power has decreased to the point where it cannot maintain normal operation of the electronic product, this invention can still measure and reflect the current battery level.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A battery voltage measuring device with near-field communication function, characterized in that, A battery voltage measuring chip with near-field communication capability, designed for use inside a battery compartment to measure the voltage of a battery under test, comprises: A substrate with two measurement pins extending outward from one edge, the two measurement pins being electrically connected to the battery under test to measure its voltage value; A near-field communication processor is disposed on one surface of the substrate and electrically connected to two measurement pins; An antenna coil is disposed on the substrate and electrically connected to the near-field communication processor. The voltage value of the battery under test can be transmitted to an external query device through the antenna coil.

2. The battery voltage measuring chip with near-field communication function as described in claim 1, characterized in that, An electromagnetic wave absorbing sheet is disposed on the other surface of the substrate opposite the near-field communication processor.

3. The battery voltage measuring chip with near-field communication function as described in claim 2, characterized in that, The area of ​​the electromagnetic wave absorbing sheet is at least enough to cover the antenna coil.

4. The battery voltage measuring chip with near-field communication function as described in claim 1, characterized in that, The substrate is a flexible dielectric substrate.

5. The battery voltage measuring chip with near-field communication function as described in claim 1, characterized in that, The two measuring pins are separated by a preset distance; each measuring pin has a conductive layer covering its two opposite surfaces, and the conductive layer on the two opposite surfaces is electrically conductive.

6. The battery voltage measuring chip with near-field communication function as described in claim 1, characterized in that, The antenna coil is also used to transmit a comparison result between the voltage value of the battery under test and a preset value to the external query device.

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