A battery

Abstract

This utility model discloses a battery, including a circuit board, a battery cell electrically connected to the circuit board, and an output positive electrode and an output negative electrode electrically connected to the circuit board. An in-situ detection unit is provided on the output negative electrode. When the battery is installed in an electrical device or electrical socket, the output negative electrode and the in-situ detection unit are connected through the input negative terminal of the electrical device or electrical socket. An in-situ detection circuit is provided on the circuit board to detect the connection status of the output negative electrode and the in-situ detection unit in real time. The battery cell of this utility model maintains a low voltage state, thereby reducing self-discharge during battery storage and extending the battery cell's power retention time. When the battery is detected to be in use, the output voltage is automatically increased to meet the requirements of the electrical device.

Description

Technical Field

[0001] This utility model relates to the field of batteries, specifically to a battery. Background Technology

[0002] Batteries, as a common energy storage device, are highly portable and reusable (rechargeable batteries). Their output voltage is generally relatively fixed and matched with the corresponding electrical equipment. However, due to the limitations of their size and weight, batteries have limited internal energy storage. When not in use, as the storage time increases, both their internal charge and voltage will gradually decrease until the voltage or charge can no longer meet the requirements of the electrical equipment, rendering the battery unusable.

[0003] A battery's rate of depletion is directly related to its voltage; reducing the battery voltage can effectively extend its storage time. However, low-voltage batteries cannot meet the needs of electrical devices, leading most existing batteries to be stored at voltages matched to the devices used. This results in the persistent problem of high self-discharge and short battery life. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the purpose of this utility model is to provide a battery in which the battery cell maintains a low voltage state, thereby reducing the self-consumption of the battery during storage and extending the battery cell's power retention time, and automatically increasing the output voltage to meet the requirements of the electrical equipment when the battery is detected to be in use.

[0005] The objective of this utility model is achieved through the following technical solution: A battery includes a circuit board, a battery cell electrically connected to the circuit board, and an output positive electrode and an output negative electrode electrically connected to the circuit board. The circuit board is provided with an in-situ detection circuit and a boost circuit. An in-situ detection unit is provided on the output negative electrode. When the battery is installed in an electrical appliance or electrical socket, the output negative electrode and the in-situ detection unit are connected through the input negative terminal of the electrical appliance or electrical socket. The in-situ detection circuit detects the connection status of the output negative electrode and the in-situ detection unit in real time. When the in-situ detection circuit detects that the output negative electrode and the in-situ detection unit are connected, the boost circuit increases the voltage of the battery cell and outputs electrical energy through the output positive electrode.

[0006] Furthermore, the output negative electrode is provided with a groove, a protrusion, or a notch, and the in-situ detection unit is located at the groove, protrusion, or notch. When the battery is electrically connected to the electrical device or electrical socket, the in-situ detection unit is electrically connected to the input negative terminal of the battery and the electrical device or electrical socket.

[0007] Furthermore, the in-situ detection unit includes: An insulator, in the form of a plate, is located at the gap of the output negative electrode to fill the gap; the inner and outer plate surfaces and the outer end surface of the insulator are provided with continuous U-shaped grooves; The conductor, with the same shape as the U-shaped groove, is housed within the U-shaped groove and is electrically connected to the in-situ detection circuit of the circuit board.

[0008] Furthermore, it also includes a charging connector connected to a circuit board, on which a charging circuit is provided.

[0009] Furthermore, it also includes: The box body is in the shape of an open box. The battery cell, circuit board and charging connector are located inside the box body. The open end face of the box body is provided with an annular protrusion, and the bottom is provided with a through hole for the charging connector to be inserted. The cover plate has an annular groove on its inner side that matches the annular protrusion, and is fastened to the opening end of the box. The output positive electrode, output negative electrode and in-situ detection unit are all set on the outer side of the cover plate and are electrically connected to the circuit board located inside the box through the cover plate.

[0010] Furthermore, the charging connector is a TYPEC connector; The charging circuit includes: The charging management chip has its BAT pin electrically connected to the positive terminal of the battery cell, its PROG pin connected in series with resistor R6 and then grounded, its VCC pin electrically connected to pin 2 of the TYPEC connector through resistor R1, and its VCC pin grounded through capacitor C1. The charging status indicator D1 is electrically connected to pins 2 and 5 of the TYPEC connector on the positive side, and electrically connected to the CHRG pin of the charging management chip through resistor R4 on the negative side. The full charge indicator D2 is electrically connected to pins 2 and 5 of the TYPEC connector on the positive terminal, and electrically connected to the STDBY pin of the charging management chip through resistor R5 on the negative terminal. Resistor R2 has one end electrically connected to pin 4 of the TYPEC connector, and the other end grounded; Resistor R3 has one end electrically connected to pin 3 of the TYPEC connector, and the other end grounded; Pins 1 and 6 of the TYPEC connector are grounded.

[0011] Furthermore, the boost circuit includes: The boost chip has its OC pin grounded through resistor R8, VCC pin electrically connected to the positive terminal of the battery cell, EN pin electrically connected to the in-situ power detection circuit, LX pin electrically connected to the positive input terminal of the power-consuming device through diode D3, FB pin electrically connected to the positive input terminal of the power-consuming device through resistor R12, and FB pin grounded through resistor R13. The inductor is electrically connected at both ends to the positive terminal of the battery cell and the positive terminal of the diode, respectively.

[0012] Furthermore, the in-situ detection circuit includes: Resistor R7 has one end electrically connected to the positive terminal of the battery cell and the other end electrically connected to the in-situ power detection component; The base of the NPN transistor Q1 is electrically connected to the in-situ power detection component, the collector is electrically connected to the positive terminal of the battery cell, and the emitter is electrically connected to the EN pin of the boost chip. Resistor R9 is electrically connected at one end to the EN pin of the boost chip and at the other end to ground.

[0013] Furthermore, the circuit board also includes a charge / discharge protection circuit, which includes: The charge / discharge protection chip has its VM pin grounded, its GND pin electrically connected to the negative terminal of the battery cell, its VDD pin electrically connected to the positive terminal of the battery cell through resistor R14, and its VDD pin electrically connected to the negative terminal of the battery cell through capacitor C12.

[0014] A battery presence detection circuit includes: The in-situ detection chip has its output pin electrically connected to the positive input terminal of the electrical device. Resistor R7 is electrically connected at one end to both the positive terminal of the power supply and the VCC pin of the in-situ detection chip, and at the other end to the negative input terminal of the device. The base of the NPN transistor Q1 is electrically connected to the negative input terminal of the electrical device, the collector is electrically connected to both the positive terminal of the power supply and the VCC pin of the presence detection chip, and the emitter is electrically connected to the enable control pin of the presence detection chip. Resistor R9 is electrically connected at one end to the enable control pin of the in-situ detection chip, and the other end is grounded.

[0015] Due to the adoption of the above technical solution, this utility model has the following advantages: 1. By setting up an independent in-situ detection unit, the system can detect whether the battery is in use and adjust the battery's output voltage accordingly. This allows for the use of low-voltage cells for energy storage while also providing the necessary voltage to meet the demands of electrical equipment when power is needed. This solves the problems of high self-discharge and short power retention time when batteries are stored.

[0016] 2. By making simple adjustments to the existing battery structure, a detection structure for detecting whether the battery is installed in the electrical equipment is added without compromising the battery installation and usage conditions, providing a basic condition for the detection of the in-situ detection circuit.

[0017] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0018] The accompanying drawings of this utility model are described below: Figure 1 This is a schematic diagram of the first three-dimensional structure of the battery in Example 1.

[0019] Figure 2 This is a schematic diagram of the second three-dimensional structure of the battery in Example 1.

[0020] Figure 3 This is a front view schematic diagram of the battery structure in Example 1.

[0021] Figure 4 for Figure 3 Schematic diagram of the AA section structure.

[0022] Figure 5 for Figure 3 Schematic diagram of the BB cross-section.

[0023] Figure 6 for Figure 5 Enlarged structural diagram at point C.

[0024] Figure 7 for Figure 6 Enlarged structural diagram at point D.

[0025] Figure 8 This is a top view of the battery structure in Example 1.

[0026] Figure 9 for Figure 8 Schematic diagram of the EE cross-section.

[0027] Figure 10 for Figure 9 Enlarged structural diagram at point F.

[0028] Figure 11 This is a circuit diagram of the charging circuit in Example 1.

[0029] Figure 12 This is a circuit diagram of the charge / discharge protection circuit in Example 1.

[0030] Figure 13 This is a circuit diagram of the boost circuit and the in-situ detection circuit in Example 1.

[0031] In the diagram: 11. Box body; 111. Annular protrusion; 12. Cover plate; 121. Annular groove; 2. Battery cell; 3. Circuit board; 4. Charging connector; 51. Output positive electrode; 52. Output negative electrode; 521. Notch; 61. Insulator; 611. U-shaped groove; 62. Conductor. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0033] like Figures 1 to 10 As shown, a battery includes a circuit board 3, a battery cell 2 electrically connected to the circuit board 3, and an output positive electrode 51 and an output negative electrode 52 electrically connected to the circuit board 3. The circuit board 3 is provided with an in-situ detection circuit and a boost circuit. The output negative electrode 52 is provided with an in-situ detection unit. When the battery is installed in an electrical appliance or electrical socket, the output negative electrode 52 and the in-situ detection unit are connected through the input negative terminal of the electrical appliance or electrical socket. The in-situ detection circuit detects the connection status of the output negative electrode 52 and the in-situ detection unit in real time. When the in-situ detection circuit detects that the output negative electrode 52 and the in-situ detection unit are connected, the boost circuit increases the voltage of the battery cell 2 and outputs electrical energy through the output positive electrode 51.

[0034] By setting up an independent in-situ detection unit, the system can detect whether the battery is in use and adjust the battery's output voltage accordingly. This allows for both energy storage using low-voltage cells 2 and timely output of voltage to meet the needs of electrical equipment when power is required. This solves the problems of high self-discharge and short power retention time when batteries are stored.

[0035] The output negative electrode 52 is provided with a groove, protrusion or notch 521, and the in-situ detection unit is located at the groove, protrusion or notch 521. When the battery is electrically connected to the electrical device or electrical socket, the in-situ detection unit is electrically connected to the input negative terminal of the battery and the electrical device or electrical socket.

[0036] In this embodiment, a recessed structure is chosen to accommodate the battery. An in-situ detection unit is added. By simply adjusting the existing battery structure, a detection structure for determining whether the battery is installed in the electrical device is added without compromising the battery installation and usage conditions, providing a foundation for the in-situ detection circuit.

[0037] In this embodiment, the in-situ detection unit includes: An insulator 61, in the form of a plate, is located at the notch 521 of the output negative electrode 52, filling the notch 521; the inner and outer plate surfaces and the outer end surface of the insulator 61 are provided with continuous U-shaped grooves 611; Conductor 62 has the same shape as U-shaped groove 611, is housed in U-shaped groove 611, and is electrically connected to the in-situ detection circuit of circuit board 3.

[0038] The structure in this embodiment can be applied to various power supply electrode structures; only the original structure needs to be partially replaced, as shown in the attached figure. Figure 1 The 9V battery shown.

[0039] In this embodiment, a charging connector 4 connected to the circuit board 3 is also included, and the circuit board 3 is provided with a charging circuit.

[0040] To improve battery reusability, the battery is configured as a rechargeable battery.

[0041] This embodiment also includes: The box body 11 is in the shape of an open box. The battery cell 2, circuit board 3, and charging connector 4 are located inside the box body 11. The open end face of the box body 11 is provided with an annular protrusion 111, and the bottom is provided with a through hole for the plug-in part of the charging connector 4 to be exposed. The cover plate 12 has an annular groove 121 on its inner side surface that matches the annular protrusion 111, and is fastened to the opening end of the box body 11. The output positive electrode 51, the output negative electrode 52 and the in-situ detection unit are all located on the outer side surface of the cover plate 12, and all pass through the cover plate 12 and are electrically connected to the circuit board 3 located inside the box body 11.

[0042] In this example, the charging connector 4 is a TYPEC connector; like Figure 11 As shown, the charging circuit includes: The charging management chip (SM5200) has its BAT pin electrically connected to the positive terminal of cell 2, its PROG pin connected in series with a 2K resistor R6 and then grounded, its VCC pin electrically connected to pin 2 of the TYPEC connector through a 1.5R resistor R1, and its VCC pin grounded through a 0.1UF capacitor C1. The charging status indicator D1 (light-emitting diode) has its positive terminal electrically connected to pins 2 and 5 of the TYPEC connector, and its negative terminal electrically connected to the CHRG pin of the charging management chip through a 1K resistor R4. The full charge indicator D2 (light-emitting diode) has its positive terminal electrically connected to pins 2 and 5 of the TYPEC connector, and its negative terminal electrically connected to the STDBY pin of the charging management chip through a 1K resistor R5. Resistor R2 has a resistance of 5.1KΩ. One end is electrically connected to pin 4 of the TYPEC connector, and the other end is grounded. Resistor R3 has a resistance of 5.1KΩ. One end is electrically connected to pin 3 of the TYPEC connector, and the other end is grounded. Pins 1 and 6 of the TYPEC connector are grounded.

[0043] Charging is controlled by an SM5200 chip, and the charging status and full charge status are indicated by two LEDs.

[0044] like Figure 13 As shown, the boost circuit includes: The boost converter chip (TC6291C) has its OC pin grounded through a 47K resistor R8, VCC pin electrically connected to the positive terminal of cell 2, EN pin electrically connected to the in-situ power detection circuit, LX pin electrically connected to the positive input terminal of the power-consuming device through diode D3, FB pin electrically connected to the positive input terminal of the power-consuming device through a 143K resistor R12, and FB pin grounded through a 10K resistor R13. The inductor is electrically connected at both ends to the positive terminal of cell 2 and the positive terminal of the diode, respectively.

[0045] The boost chip can increase the output voltage of cell 2 to 9V, thereby meeting the input voltage requirements of electrical equipment, while keeping cell 2 in a low voltage state.

[0046] In addition, the boost circuit also includes: Capacitor C2 has a charge of 10uF. One end is electrically connected to the positive terminal of cell 2, and the other end is grounded. Capacitor C3 has a charge of 10uF. One end is electrically connected to the positive terminal of cell 2, and the other end is grounded. Capacitor C4 has a charge of 0.1uF. One end is electrically connected to the positive terminal of cell 2, and the other end is grounded. Capacitor C8 has a charge of 10uF. One end is electrically connected to the positive input terminal of the electrical equipment, and the other end is grounded. Capacitor C9 has a charge of 10uF. One end is electrically connected to the positive input terminal of the electrical equipment, and the other end is grounded. Capacitor C10 has a charge of 10uF. One end is electrically connected to the positive input terminal of the electrical equipment, and the other end is grounded.

[0047] The above capacitor settings can improve the stability of the input and output of the boost circuit and protect the electrical equipment.

[0048] like Figure 13 As shown, the in-situ detection circuit includes: Resistor R7 has a resistance of 1MΩ. One end is electrically connected to the positive terminal of cell 2, and the other end is electrically connected to the in-situ power detection component. The base of NPN transistor Q1 is electrically connected to the in-situ power detection component, the collector is electrically connected to the positive terminal of cell 2, and the emitter is electrically connected to the EN pin of the boost chip. Resistor R9 has a resistance of 1MΩ. One end is electrically connected to the EN pin of the boost chip, and the other end is grounded.

[0049] This part of the circuit can determine whether a battery has been placed in the electrical device. Combined with the boost output settings of the boost chip, automatic boost output of electrical energy can be achieved.

[0050] like Figure 12As shown, circuit board 3 also includes a charge / discharge protection circuit, which includes: The charge / discharge protection chip has its VM pin grounded, its GND pin connected to the negative terminal of cell 2, its VDD pin connected to the positive terminal of cell 2 through a 1K resistor R14, and its VDD pin connected to the negative terminal of cell 2 through a 0.1UF capacitor C12.

[0051] This circuit can protect cell 2 during charging and discharging. Example

[0052] A battery presence detection circuit includes: The in-situ detection chip has its output pin electrically connected to the positive input terminal of the electrical device. Resistor R7 has a resistance of 1MΩ. One end is electrically connected to both the positive terminal of the power supply and the VCC pin of the in-situ detection chip, and the other end is electrically connected to the negative input terminal of the device. The base of the NPN transistor Q1 is electrically connected to the negative input terminal of the electrical device, the collector is electrically connected to both the positive terminal of the power supply and the VCC pin of the presence detection chip, and the emitter is electrically connected to the enable control pin of the presence detection chip. Resistor R9 has a resistance of 1MΩ. One end is electrically connected to the enable control pin of the in-situ detection chip, and the other end is grounded.

[0053] By determining whether the output negative electrode 52 is directly connected to resistor R7 through the presence detection circuit, the system automatically determines whether the battery is placed in the device. The determination result signal is then output to the enable control pin of the presence detection chip, controlling the voltage control of the output positive electrode 51 by the presence detection chip. In this circuit, the presence detection chip can use... Figure 13 The boost converter chip in the circuit diagram.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A battery comprising a circuit board, an electric core electrically connected with the circuit board, an output positive electrode and an output negative electrode electrically connected with the circuit board; characterized in that, The circuit board is equipped with an in-situ detection circuit and a boost circuit; the output negative electrode is equipped with an in-situ detection unit; when the battery is installed in a power device or power socket, the output negative electrode and the in-situ detection unit are connected through the input negative terminal of the power device or power socket; the in-situ detection circuit detects the connection status of the output negative electrode and the in-situ detection unit in real time; when the in-situ detection circuit detects that the output negative electrode and the in-situ detection unit are connected, the boost circuit increases the cell voltage and outputs electrical energy through the output positive electrode.

2. The battery of claim 1, wherein, The output negative electrode is provided with a groove, a protrusion or a notch, and the in-situ detection unit is located at the groove, a protrusion or a notch. When the battery is electrically connected to the electrical device or electrical socket, the in-situ detection unit is electrically connected to the input negative terminal connector of the battery and the electrical device or electrical socket.

3. The battery of claim 2, wherein, The in-situ detection unit includes: An insulator, in the form of a plate, is located at the gap of the output negative electrode to fill the gap; the inner and outer plate surfaces and the outer end surface of the insulator are provided with continuous U-shaped grooves; The conductor, with the same shape as the U-shaped groove, is housed within the U-shaped groove and is electrically connected to the in-situ detection circuit of the circuit board.

4. The battery of any one of claims 1-3, wherein, It also includes a charging connector connected to a circuit board, on which a charging circuit is provided.

5. The battery of claim 4, wherein, Also includes: The box body is in the shape of an open box. The battery cell, circuit board and charging connector are located inside the box body. The open end face of the box body is provided with an annular protrusion, and the bottom is provided with a through hole for the charging connector to be inserted. The cover plate has an annular groove on its inner side that matches the annular protrusion, and is fastened to the opening end of the box. The output positive electrode, output negative electrode and in-situ detection unit are all set on the outer side of the cover plate and are electrically connected to the circuit board located inside the box through the cover plate.

6. The battery of claim 4, wherein, The charging connector is a TYPEC connector; The charging circuit includes: The charging management chip has its BAT pin electrically connected to the positive terminal of the battery cell, its PROG pin connected in series with resistor R6 and then grounded, its VCC pin electrically connected to pin 2 of the TYPEC connector through resistor R1, and its VCC pin grounded through capacitor C1. The charging status indicator D1 is electrically connected to pins 2 and 5 of the TYPEC connector on the positive side, and electrically connected to the CHRG pin of the charging management chip through resistor R4 on the negative side. The full charge indicator D2 is electrically connected to pins 2 and 5 of the TYPEC connector on the positive terminal, and to the STDBY pin of the charging management chip through resistor R5 on the negative terminal. Resistor R2 is electrically connected at one end to pin 4 of the TYPEC connector, and the other end is grounded; Resistor R3 has one end electrically connected to pin 3 of the TYPEC connector, and the other end grounded; Pins 1 and 6 of the TYPEC connector are grounded.

7. The battery of claim 1, wherein, The boost circuit includes: The boost chip has its OC pin grounded through resistor R8, VCC pin electrically connected to the positive terminal of the battery cell, EN pin electrically connected to the in-situ power detection circuit, LX pin electrically connected to the positive input terminal of the power-consuming device through diode D3, FB pin electrically connected to the positive input terminal of the power-consuming device through resistor R12, and FB pin grounded through resistor R13. The inductor is electrically connected at both ends to the positive terminal of the battery cell and the positive terminal of the diode, respectively.

8. The battery of claim 7, wherein, The in-situ detection circuit includes: Resistor R7 has one end electrically connected to the positive terminal of the battery cell and the other end electrically connected to the in-situ power detection component; The base of the NPN transistor Q1 is electrically connected to the in-situ power detection component, the collector is electrically connected to the positive terminal of the battery cell, and the emitter is electrically connected to the EN pin of the boost chip. Resistor R9 is electrically connected at one end to the EN pin of the boost chip and at the other end to ground.

9. The battery of claim 1, wherein, The circuit board also includes a charge / discharge protection circuit, which includes: The charge / discharge protection chip has its VM pin grounded, its GND pin electrically connected to the negative terminal of the battery cell, its VDD pin electrically connected to the positive terminal of the battery cell through resistor R14, and its VDD pin electrically connected to the negative terminal of the battery cell through capacitor C12.

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