Battery interface device and electronic device

Abstract

The utility model discloses an embodiment of a kind of battery interface device and electronic equipment, comprising: PCB board;Battery connector, set on the PCB board;Interface circuit, set on the PCB board, the terminal of the interface circuit is connected with the battery connector correspondingly;The PCB board includes engineering test pad, the terminal of the engineering test pad is connected with the battery connector correspondingly, the terminal connected by the interface circuit includes the terminal connected by the engineering test pad;The engineering test pad is used to test the PCB board, the engineering test pad is multiplexed as wire cell pad, can connect wire cell.The technical scheme provided in the embodiment of the utility model can connect different models of battery by battery connector, multiplex engineering test pad as wire cell pad, can make electronic equipment connect wire cell, improve the compatibility of electronic equipment, reduce the occupied area of PCB board.

Description

Technical Field

[0001] This utility model relates to the field of battery interface technology, and in particular to a battery interface device and electronic device. Background Technology

[0002] With the rapid development of technology and the progress of society, more and more electronic products are becoming ubiquitous. We can no longer live without various electronic devices. However, all electronic products require batteries for power.

[0003] Current electronic products typically use board-to-board (BTB) connector batteries. While wire-bonded batteries are widely used due to their lower cost, their interfaces are incompatible with BTB batteries, requiring separate pad designs. Existing electronic products cannot accept either type of battery. To support both, separate BTB connectors and wire-bonded pads must be placed on the PCB, wasting PCB space and increasing manufacturing costs. Utility Model Content

[0004] This invention provides a battery interface device and electronic device to solve the problem that existing battery interface devices cannot connect to other types of batteries.

[0005] According to one aspect of the present invention, a battery interface device is provided, comprising:

[0006] PCB board;

[0007] The battery connector is mounted on the PCB board;

[0008] An interface circuit is disposed on the PCB board, and the interface circuit is connected to the terminals of the battery connector accordingly;

[0009] The PCB board includes engineering test pads, which are connected to the terminals of the battery connector. The terminals connected to the interface circuit include those connected to the engineering test pads. The engineering test pads are used to test the PCB board and can be reused as wire-bonding battery pads to connect wire-bonding batteries.

[0010] Optionally, the battery connector includes a positive terminal, a negative terminal, a temperature test terminal, and an identification terminal; the battery connector includes a board-to-board connector.

[0011] Optionally, the interface circuit includes: a first interface unit, the first interface unit being connected to the positive terminal;

[0012] The first interface unit includes a first capacitor, a second capacitor, a first diode, and a second diode connected in parallel;

[0013] The first terminals of the first capacitor, the second capacitor, the first diode, and the second diode are all connected to the positive terminal, and the second terminals of the first capacitor, the second capacitor, the first diode, and the second diode are all grounded.

[0014] Optionally, the interface circuit further includes: a second interface unit, the second interface unit being connected to the negative terminal;

[0015] The second interface unit includes a first resistor, the first end of which is connected to the negative terminal, and the second end of which is grounded.

[0016] Optionally, the interface circuit further includes a temperature detection unit, which is connected to the temperature test terminal;

[0017] The temperature detection unit includes a second resistor, a third resistor, a third capacitor, and a third diode; the first ends of the second resistor, the third resistor, the third capacitor, and the third diode are connected to the temperature test terminal; the second end of the second resistor outputs a temperature detection signal, the second end of the third resistor is connected to a fixed power supply, and the second ends of the third capacitor and the third diode are grounded.

[0018] Optionally, the interface circuit further includes: an identification unit connected to the identification terminal; the identification unit is used to determine the type of the connected battery based on the level signal output by the identification terminal;

[0019] The identity recognition unit includes a fourth resistor and a fourth diode;

[0020] The first end of the fourth resistor is connected to the identification terminal, and the second end of the fourth resistor outputs an identification signal; the first end of the fourth diode is connected to the identification terminal, and the second end of the fourth diode is grounded.

[0021] Optionally, the engineering test pads include at least three pads;

[0022] At least three of the pads are respectively connected to the positive terminal, the negative terminal and the temperature test terminal.

[0023] Optionally, at least three of the engineering test pads have a diameter greater than 1.3 mm, and the distance between any two adjacent pads of the at least three pads is greater than 1 mm.

[0024] Optionally, at least three of the engineering test pads are circular in shape and have annular copper foil around their edges.

[0025] According to another aspect of the present invention, an electronic device is provided, including any of the battery interface devices described above.

[0026] The technical solution provided by this utility model embodiment, by setting a battery connector and engineering test pads on the PCB board, allows the battery connector to connect to various battery models, and the engineering test pads are connected to the terminals of the battery connector accordingly. The battery connector can connect to different battery models, and the engineering test pads are reused as wire-bonding battery pads, enabling electronic devices to connect to wire-bonded batteries, improving the compatibility of electronic devices, and allowing users to flexibly switch between different battery models. Reusing the engineering test pads as wire-bonding battery pads eliminates the need for separate wire-bonding battery pads, reducing the PCB board area occupied and lowering production costs.

[0027] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of a battery interface device provided in an embodiment of this utility model;

[0030] Figure 2 A schematic diagram of another battery interface device provided in this embodiment of the present utility model;

[0031] Figure 3 A schematic diagram of another battery interface device provided in this embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of another battery interface device provided in an embodiment of the present utility model. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] Figure 1 This is a schematic diagram of a battery interface device provided in an embodiment of the present invention. See also... Figure 1 The battery interface device 100 includes a PCB board 10; a battery connector 20 disposed on the PCB board 10; and an interface circuit 30 disposed on the PCB board 10, with the interface circuit 30 correspondingly connected to the terminals of the battery connector 20. The PCB board 10 includes engineering test pads 11, which are correspondingly connected to the terminals of the battery connector 20. The terminals connected to the interface circuit 30 include the terminals connected to the engineering test pads 11. The engineering test pads 11 are used to test the PCB board 10 and can be reused as wire bonding battery pads to connect wire bonding batteries.

[0036] Specifically, existing battery interface devices generally only support connecting one type of battery, but some electronic products require batteries with different signal strengths. This necessitates setting up different battery interface types on the battery interface device, which not only occupies PCB board space but also increases design costs. This utility model provides a battery interface device 100, which includes a PCB board 10 and a battery connector 20 disposed on the PCB board 10. The battery connector 20 can be used to connect multiple battery types. The battery interface device 100 also includes an interface circuit 30 disposed on the PCB board 10. The interface circuit 30 is used to control the battery to power the electronic device normally and to detect the battery type. Furthermore, the interface circuit 30 can also detect the temperature of the battery connected to the electronic device, ensuring that the battery operating temperature is within the normal temperature range. Engineering test pads 11 are provided on the PCB board 10 for testing and debugging the PCB board 10, providing convenient test access points and ensuring the performance of the PCB board 10. The engineering test pad 11 is also connected to the terminals of the battery connector 20, and the terminals connected to the interface circuit 30 include those connected to the engineering test pad 11. In other words, the engineering test pad 11 is connected to the terminals of the battery connector 20, and the engineering test pad 11 is connected to the interface circuit 30; the engineering test pad 11, battery connector 20, and interface circuit 30 are all connected in a corresponding manner. Since the terminals connected to the interface circuit 30 include those connected to the engineering test pad 11, and the engineering test pad 11 and interface circuit 30 are connected accordingly, the engineering test pad 11 can be arranged as a densely packed pad group, ensuring its size compatibility with wire bonding processes. In this way, the engineering test pad 11 can reuse wire bonding battery pads, and wire bonding batteries can be connected through these reused wire bonding battery pads. The wire bonding battery is connected to the interface circuit 30 through the engineering test pad 11 to provide power to the electronic device.

[0037] The technical solution provided by this utility model embodiment allows for the connection of different battery models via a battery connector, and the engineering test pads are reused as wire-bonding battery pads, enabling electronic devices to connect to wire-bonding batteries, thus improving the compatibility of electronic devices and allowing users to flexibly switch between different battery models. Reusing the engineering test pads as wire-bonding battery pads eliminates the need for separate wire-bonding battery pads, reducing the PCB board area occupied and lowering costs.

[0038] Optional, Figure 2 This is a schematic diagram of another battery interface device provided in an embodiment of the present invention. Based on the above embodiments, see also... Figure 2The battery connector 20 includes a positive terminal 21, a negative terminal 22, a temperature test terminal 23, and an identification terminal 24; the battery connector 20 also includes a board-to-board connector 25.

[0039] Specifically, the battery connector 20 is used to install and connect batteries. The battery connector 20 has a positive connection terminal 21, a negative connection terminal 22, a temperature test terminal 23, and an identification terminal 24. When connecting a battery, these terminals connect to the battery's positive, negative, temperature test, and identification pins, respectively. The battery connector 20 also includes a board-to-board (BTB) connector 25, which can be used to connect BTB type batteries. The BTB connector 25 has pins; after the battery is installed on the BTB connector 25, the battery pins make contact with the pins on the BTB connector 25 to achieve electrical connection. Furthermore, the BTB connector 25 also connects to the positive connection terminal 21, negative connection terminal 22, temperature test terminal 23, and identification terminal 24 on the battery connector 20, thus connecting the battery connector 25 to the battery.

[0040] Optional, Figure 3 This is a schematic diagram of another battery interface device provided in an embodiment of the present invention. Based on the above embodiments, see also... Figure 3 The interface circuit 30 includes: a first interface unit 31, which is connected to the positive terminal 21; the first interface unit 31 includes a first capacitor C1, a second capacitor C2, a first diode D1, and a second diode D2 connected in parallel; the first ends of the first capacitor C1, the second capacitor C2, the first diode D1, and the second diode D2 are all connected to the positive terminal 21, and the second ends of the first capacitor C1, the second capacitor C2, the first diode D1, and the second diode D2 are all grounded.

[0041] Specifically, the interface circuit 30 is mainly used to control the battery output after the battery is connected, as well as to verify the battery's identity and detect its temperature. The first interface unit 31 is connected to the positive terminal 21 of the battery connector 20. The first interface unit 31 may include a first capacitor C1, a second capacitor C2, a first diode D1, and a second diode D2 connected in parallel. The first capacitor C1 and the second capacitor C2 can effectively filter and buffer the current output by the battery. The first diode D1 and the second diode D2 can stabilize the voltage and also form a short-circuit trigger protection mechanism to prevent damage to subsequent circuits when the battery is over-discharged or reverse-connected. The capacitance values ​​of the first capacitor C1 and the second capacitor C2 are not specifically limited in this invention. For example, the capacitance value of the first capacitor C1 can be 100pF, and the capacitance value of the second capacitor C2 can be 22uF.

[0042] Based on the above embodiments, see below. Figure 3 The interface circuit 30 further includes: a second interface unit 32, which is connected to the negative terminal 22; the second interface unit 32 includes a first resistor R1, the first end of which is connected to the negative terminal 22, and the second end of which is grounded.

[0043] Specifically, the second interface unit 32 is connected to the negative terminal 22 of the battery connector 20. The second interface unit includes a first resistor R1, through which the negative terminal 22 of the battery connector 20 is grounded. The first resistor R1 limits the current in the circuit, preventing excessive current in the battery's main circuit. Furthermore, the voltage across the first resistor R1 can be sampled using Kelvin connections to measure its voltage. This allows for precise detection of the charging and discharging current during battery charging and discharging, and real-time voltage monitoring via Kelvin connections. In the event of a voltage surge, the circuit can be cut off, effectively protecting the circuit and the battery.

[0044] Based on the above embodiments, see below. Figure 3 The interface circuit 30 also includes a temperature detection unit 33, which is connected to the temperature test terminal 23. The temperature detection unit 33 includes a second resistor R2, a third resistor R3, a third capacitor C3, and a third diode D3. The first ends of the second resistor R2, the third resistor R3, the third capacitor C3, and the third diode D3 are connected to the temperature test terminal 23. The second end of the second resistor R2 outputs a temperature detection signal, the second end of the third resistor R3 is connected to a fixed power supply, and the second ends of the third capacitor C3 and the third diode D3 are grounded.

[0045] Specifically, the interface circuit 30 also needs to include a temperature detection unit 33. The temperature detection unit 33 is connected to the temperature test terminal 23 of the battery connector 20. After the battery is installed on the battery connector 20, the battery temperature can be detected through the temperature detection unit 33. The temperature detection unit 33 includes a second resistor R2, a third resistor R3, a third capacitor C3, and a third diode D3. The first end of the second resistor R2 is connected to the temperature test terminal 23, and the second end of the second resistor R2 serves as the output terminal of the temperature detection unit 33, outputting a temperature detection signal. The first end of the third resistor R3 is also connected to the temperature detection terminal 23, and the second end of the third resistor R3 is connected to a fixed power supply, providing a stable voltage to the second resistor R2 and preventing excessive voltage output from the temperature detection terminal 23 from damaging subsequent circuits. Furthermore, the first ends of the third capacitor C3 and the third diode D3 in the temperature detection unit 33 are both connected to the temperature detection terminal 23. The third capacitor C3 can filter and denoise the temperature detection signal output from the temperature detection terminal 23, and the third diode D3 can prevent damage to the circuit and battery when the voltage is too high.

[0046] Based on the above embodiments, see below. Figure 3 The interface circuit 30 further includes: an identification unit 34, which is connected to the identification terminal 24; the identification unit 34 is used to determine the type of the connected battery based on the level signal output by the identification terminal 24; the identification unit 34 includes a fourth resistor R4 and a fourth diode D4; the first end of the fourth resistor R4 is connected to the identification terminal 24, and the second end of the fourth resistor R4 outputs an identification signal; the first end of the fourth diode D2 is connected to the identification terminal 24, and the second end of the fourth diode D4 is grounded.

[0047] Specifically, for some special batteries, the battery has built-in identification pins. After the battery is installed, these pins contact the identification terminals of the battery connector 20. Therefore, an identification unit 34 is also required in the interface circuit 30, which is connected to the identification terminals 24 in the battery connector 20. The identification unit 34 may include a fourth resistor R4 and a fourth diode D4. The first ends of the fourth resistor R4 and the fourth diode D4 are respectively connected to the identification terminals 24 of the battery connector 20, and the second end of the fourth resistor R4 serves as the output terminal of the identification unit 34, outputting an identification signal. The second end of the fourth diode D4 is grounded, which can effectively protect the battery and subsequent circuits. The identification unit 34 can determine the type of the connected battery based on the level signal output from the identification terminals 24 in the battery connector 20. For example, if the level signal output from the identification terminals 24 is a valid signal, it can be determined that the connected battery is a BTB battery; if the output level signal is an invalid signal, it can be determined that the connected battery is a wire-bonded battery.

[0048] Optional, Figure 4 This is a schematic diagram of another battery interface device provided in an embodiment of the present invention. Based on the above embodiments, see also... Figure 4 The engineering test pad 11 includes at least three pads; the at least three pads are respectively connected to the positive terminal 21, the negative terminal 22 and the temperature test terminal 23.

[0049] Specifically, the engineering test pad 11 can also be reused as a wire-bonding battery pad. A wire-bonding battery typically has three pins: a positive terminal, a negative terminal, and a temperature test pin. To ensure the wire-bonding battery can be electrically connected to the interface circuit 30 via the engineering test pad 11, the engineering test pad 11 needs to include at least three pads: a first pad 1101, a second pad 1102, and a third pad 1103. For example, the first pad 1101 can serve as the positive terminal of the wire-bonding battery. The first pad 1101 needs to be connected to the positive terminal 21 of the battery connector 20, which is to say, to the first interface unit 31 of the interface circuit 30. The second pad 1102 can serve as the negative terminal of the wire-bonding battery; therefore, the second pad 1102 needs to be connected to the negative terminal 22 of the battery connector 20, which is to say, to the second interface unit 32 of the interface circuit 30. The third pad 103 can be used as a temperature test pin for bonding the battery. Therefore, the third pad 1103 needs to be connected to the temperature test terminal 23 of the battery connector 20, which is to connect to the temperature detection unit 33 of the interface circuit 30.

[0050] In this design, at least three of the engineering test pads 11 have a diameter greater than 1.3 mm, and the distance between any two adjacent pads of the at least three pads is greater than 1 mm. The at least three pads of the engineering test pads 11 are circular in shape, with annular copper foil around their edges.

[0051] Specifically, since the engineering test pad 11 can be used as a wire-bonding battery pad to connect to the wire-bonded battery, the diameter of the pad can be set to be greater than 1.3mm to increase the welding area and prevent cold solder joints and open circuits in the wire-bonded battery. Maintaining a distance of more than 1mm between any two adjacent pads can prevent different pads from connecting together and avoid short circuits. The pads can be made circular, with annular copper foil around the edges to improve the mechanical strength of the pads, enhance welding reliability, and prevent peeling.

[0052] The technical solution provided by this utility model allows for the connection of different battery models via a battery connector, reusing engineering test pads as wire-bonding battery pads, thus enabling the connection of wire-bonding batteries. This improves the compatibility of electronic devices, allowing users to flexibly switch between different battery models. Reusing engineering test pads as wire-bonding battery pads reduces the PCB board area occupied, thereby lowering costs.

[0053] This utility model embodiment also provides an electronic device. The electronic device provided by this utility model embodiment includes the battery interface device 100 provided in any of the above embodiments. The electronic device can be a mobile phone, tablet computer, video phone, personal digital assistant, in-vehicle display, smartwatch, smart helmet, or other wearable device, etc. Since the electronic device provided by this utility model embodiment includes the battery interface device provided by this utility model embodiment, it also has the same beneficial effects, and will not be described again here.

[0054] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A battery interface device, characterized in that, include: PCB board; The battery connector is mounted on the PCB board; An interface circuit is disposed on the PCB board, and the interface circuit is connected to the terminals of the battery connector accordingly; The PCB board includes engineering test pads, which are connected to the terminals of the battery connector. The terminals connected to the interface circuit include those connected to the engineering test pads. The engineering test pads are used to test the PCB board and can be reused as wire-bonding battery pads to connect wire-bonding batteries.

2. The battery interface device according to claim 1, characterized in that, The battery connector includes a positive terminal, a negative terminal, a temperature test terminal, and an identification terminal; the battery connector includes a board-to-board connector.

3. The battery interface device according to claim 2, characterized in that, The interface circuit includes: a first interface unit, which is connected to the positive terminal; The first interface unit includes a first capacitor, a second capacitor, a first diode, and a second diode connected in parallel; The first terminals of the first capacitor, the second capacitor, the first diode, and the second diode are all connected to the positive terminal, and the second terminals of the first capacitor, the second capacitor, the first diode, and the second diode are all grounded.

4. The battery interface device according to claim 2, characterized in that, The interface circuit further includes: a second interface unit, which is connected to the negative terminal; The second interface unit includes a first resistor, the first end of which is connected to the negative terminal, and the second end of which is grounded.

5. The battery interface device according to claim 2, characterized in that, The interface circuit further includes a temperature detection unit, which is connected to the temperature test terminal. The temperature detection unit includes a second resistor, a third resistor, a third capacitor, and a third diode; the first ends of the second resistor, the third resistor, the third capacitor, and the third diode are connected to the temperature test terminal; the second end of the second resistor outputs a temperature detection signal, the second end of the third resistor is connected to a fixed power supply, and the second ends of the third capacitor and the third diode are grounded.

6. The battery interface device according to claim 2, characterized in that, The interface circuit further includes: an identification unit connected to the identification terminal; the identification unit is used to determine the type of the connected battery based on the level signal output by the identification terminal; The identity recognition unit includes a fourth resistor and a fourth diode; The first end of the fourth resistor is connected to the identification terminal, and the second end of the fourth resistor outputs an identification signal; the first end of the fourth diode is connected to the identification terminal, and the second end of the fourth diode is grounded.

7. The battery interface device according to claim 2, characterized in that, The engineering test pads include at least three pads; At least three of the pads are respectively connected to the positive terminal, the negative terminal and the temperature test terminal.

8. The battery interface device according to claim 7, characterized in that, At least three of the engineering test pads have a diameter greater than 1.3 mm, and the distance between any two adjacent pads of the at least three pads is greater than 1 mm.

9. The battery interface device according to claim 2, characterized in that, At least three of the engineering test pads are circular in shape and have annular copper foil around their edges.

10. An electronic device, characterized in that, Includes the battery interface device as described in claims 1-9.

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