Battery and battery in-situ detection circuit

Abstract

The battery comprises a circuit board, a battery cell electrically connected with the circuit board, an output positive electrode and an output negative electrode, wherein the output positive electrode and the output negative electrode are electrically connected with the circuit board; an in-situ detection unit is arranged on the output negative electrode; when the battery is installed on an electric device or an electric socket, the output negative electrode and the in-place detection unit are conducted through an input negative electrode connector of the electric device or the electric socket. The circuit board is provided with an in-place detection circuit which detects the connection state of the output negative electrode and the in-place detection unit in real time. And the battery in-place detection circuit comprises an in-place detection chip, a resistor R7, an NPN triode Q1 and a resistor R9, and whether the battery is used and installed in the electric equipment is judged by detecting whether the input negative electrode connector of the electric equipment and the output negative electrode of the battery are conducted or not. The battery cell is kept in a low-voltage state, so that the self-power consumption of the battery during storage is reduced, the power keeping time of the battery cell is prolonged, and when the battery is detected to be in a use state, the output voltage is automatically increased to meet the requirements of electric equipment.

Description

Technical Field

[0001] The present invention relates to the field of batteries, and in particular to a battery and a battery presence detection circuit. Background Art

[0002] Batteries, as a common energy storage device, are highly portable and reusable (rechargeable batteries). Their output voltage is generally relatively fixed, matching the corresponding electrical device. However, due to their size and weight, batteries have limited internal energy storage. When not in use, their internal charge and voltage gradually decrease over time, until the voltage or charge cannot meet the requirements of the electrical device, rendering the battery unusable.

[0003] The rate at which a battery loses power is directly related to its voltage. Lowering the battery voltage can effectively extend its storage life. However, low-voltage batteries cannot meet the demands of electrical devices. Consequently, most existing batteries are stored at a voltage that matches the device, resulting in high power consumption and short battery life. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a battery whose cell maintains a relatively low voltage state, thereby reducing the self-consumption of the battery during storage and extending the battery life of the cell, and automatically increasing the output voltage to meet the requirements of the electrical equipment when it is detected that the battery is in use.

[0005] The objective of the present invention is achieved through such technical solution: A battery comprises 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 a presence detection circuit and a boost circuit; the output negative electrode is provided with a presence detection unit; when the battery is mounted on an electrical device or an electrical socket, the output negative electrode and the presence detection unit are connected via an input negative electrode connector of the electrical device or the electrical socket; the presence detection circuit detects the connection status of the output negative electrode and the presence detection unit in real time, and when the presence detection circuit detects that the output negative electrode and the presence detection unit are connected, the boost circuit increases the battery cell voltage and outputs electrical energy via the output positive electrode.

[0006] Furthermore, a groove, a protrusion or a notch is provided on the output negative electrode, and the presence detection unit is provided at the groove, the protrusion or the notch. When the battery is electrically connected and plugged into an electrical device or an electrical socket, the presence detection unit is electrically connected and contacted with the input negative electrode connector of the battery and the electrical device or the electrical socket.

[0007] Furthermore, the presence detection unit includes: The insulator is plate-shaped and 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 has the same shape as the U-shaped groove, is accommodated in 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, and the circuit board is provided with a charging circuit.

[0009] Furthermore, it also includes: The box body is in the shape of an open box, in which the battery cell, circuit board and charging connector are located. The open end surface of the box body is provided with an annular convex edge, and the bottom is provided with a through hole for exposing the plug-in part of the charging connector; The cover plate has an annular groove on its inner surface that matches the annular ridge and is buckled onto the opening end of the box body; the output positive electrode, output negative electrode and in-situ detection unit are all arranged on the outer surface of the cover plate and are electrically connected to the circuit board inside the box body through the cover plate.

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

[0011] Furthermore, the boost circuit includes: The boost chip has its OC pin connected to ground via resistor R8, its VCC pin electrically connected to the positive electrode of the battery cell, its EN pin electrically connected to the in-place power detection circuit, its LX pin electrically connected to the positive input terminal of the power device via diode D3, and its FB pin electrically connected to the positive input terminal of the power device via resistor R12. The FB pin is grounded via resistor R13; The inductor has two ends electrically connected to the positive electrode of the battery cell and the positive electrode of the diode respectively; Capacitor C2, with a capacity of 10UF, one end is electrically connected to the positive terminal of battery cell 2, and the other end is grounded; Capacitor C3, with a capacity of 10UF, one end is electrically connected to the positive terminal of battery cell 2, and the other end is grounded; Capacitor C4, with a capacity of 0.1UF, one end is electrically connected to the positive terminal of battery cell 2, and the other end is grounded; Capacitor C8, with a capacity of 10UF, one end is electrically connected to the positive input terminal of the electrical equipment, and the other end is grounded; Capacitor C9, with a capacity 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 capacity of 10UF, one end of which is electrically connected to the positive input terminal of the electrical equipment, and the other end is grounded.

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

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

[0014] A battery presence detection circuit, comprising: An in-place detection chip, wherein the output pin is electrically connected to the positive input terminal of the electrical device; Resistor R7, one end of which is electrically connected to the positive electrode of the power supply and the VCC pin of the presence detection chip, and the other end of which is electrically connected to the negative input connector of the power-consuming device; NPN transistor Q1, the base is electrically connected to the negative input terminal of the power device, the collector is electrically connected to the positive pole 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; The resistor R9 has one end electrically connected to the enable control pin of the presence detection chip and the other end grounded.

[0015] Due to the adoption of the above technical solution, the present invention has the following advantages: 1. An independent in-use detection unit is provided to detect whether the battery is in use, thereby adjusting the battery output voltage accordingly. This allows low-voltage cells to be used for energy storage while also providing a voltage that meets the needs of electrical devices when power is needed. This solves the problem of high power consumption and short battery life during storage.

[0016] 2. Through simple adjustments to the existing battery structure, without damaging the battery installation and use conditions, a detection structure is added to detect whether the battery is installed in the electrical equipment, providing basic conditions for the detection of the in-situ detection circuit.

[0017] Other advantages, objects and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings of the present invention are as follows: Figure 1 Schematic diagram of the first three-dimensional structure of the battery in Example 1.

[0019] Figure 2 Schematic diagram of the second three-dimensional structure of the battery in Example 1.

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

[0021] Figure 4 for Figure 3 Schematic diagram of the AA cross-sectional structure.

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

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

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

[0025] Figure 8 Schematic diagram of the top view of the battery 1 in Example 1.

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

[0027] Figure 10 for Figure 9 Enlarged structural diagram at F in the middle.

[0028] Figure 11 4 is a circuit diagram of the charging circuit in Example 1.

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

[0030] Figure 13 4 is a circuit diagram of the boost circuit and the presence detection circuit in Example 1.

[0031] In the figure: 11. Box body; 111. Annular ridge; 12. Cover; 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 DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings and examples. 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 a presence detection circuit and a boost circuit; the output negative electrode 52 is provided with a presence detection unit; when the battery is installed on an electrical device or an electrical socket, the output negative electrode 52 and the presence detection unit are connected through the input negative terminal of the electrical device or the electrical socket; the presence detection circuit detects the connection status of the output negative electrode 52 and the presence detection unit in real time, and when the presence detection circuit detects that the output negative electrode 52 and the presence 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 providing an independent presence detection unit to detect whether the battery is in use, the battery output voltage is adjusted accordingly. This allows the use of low-voltage cells 2 for energy storage while also providing a voltage that meets the needs of electrical devices when power is needed. This solves the problem of high power consumption and short battery life during storage.

[0035] The output negative electrode 52 is provided with a groove, a protrusion or a notch 521, and the in-place detection unit is arranged at the groove, the protrusion or the notch 521. When the battery is electrically connected and plugged into an electrical device or an electrical socket, the in-place detection unit is electrically connected and contacted with the input negative electrode connector of the battery and the electrical device or the electrical socket.

[0036] In this embodiment, a groove is selected to accommodate the presence detection unit. By simply adjusting the existing battery structure, a detection structure is added to detect whether the battery is installed in the electrical device without compromising the battery installation and use conditions, providing the basic conditions for the presence detection circuit to detect.

[0037] In this embodiment, the presence detection unit includes: The insulator 61 is plate-shaped and is located at the gap 521 of the output negative electrode 52 to fill the gap 521. The inner and outer plate surfaces and the outer end surface of the insulator 61 are provided with a continuous U-shaped groove 611. The conductor 62 has the same shape as the U-shaped groove 611 , is accommodated in the U-shaped groove 611 , and is electrically connected to the in-place detection circuit of the circuit board 3 .

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

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

[0040] In order to improve the reusability of the battery, the battery is configured as a rechargeable battery.

[0041] In this embodiment, it also includes: The box body 11 is in the shape of an open box, and the battery cell 2, circuit board 3, and charging connector 4 are located inside the box body 11. The open end surface of the box body 11 is provided with an annular ridge 111, and the bottom is provided with a through hole for exposing the plug-in portion of the charging connector 4; The cover plate 12 has an annular groove 121 on its inner surface that matches the annular ridge 111 and is buckled onto the open end of the box body 11; the output positive electrode 51, the output negative electrode 52 and the in-situ detection unit are all arranged on the outer surface of the cover plate 12, and are all electrically connected to the circuit board 3 located in the box body 11 through the cover plate 12.

[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 battery cell 2, the PROG pin is connected in series with a 2K resistor R6 and then grounded, and the VCC pin is electrically connected to pin 2 of the TYPEC connector through a 1.5R resistor R1. The VCC pin is grounded through a 0.1UF capacitor C1; The charging status indicator D1 (light-emitting diode) has its positive electrode electrically connected to pins 2 and 5 of the TYPEC connector, and its negative electrode electrically connected to the CHRG pin of the charging management chip through a 1K resistor R4; The full-charge status indicator D2 (light-emitting diode) has its positive electrode electrically connected to pins 2 and 5 of the TYPEC connector, and its negative electrode electrically connected to the STDBY pin of the charge management chip through a 1K resistor R5; Resistor R2, with a resistance of 5.1K, has one end electrically connected to pin 4 of the TYPEC connector and the other end grounded; Resistor R3, with a resistance of 5.1K, 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.

[0043] Charging is controlled by the 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 OC pin of the boost chip (TC6291C) is grounded via a 47K resistor R8. The VCC pin is electrically connected to the positive terminal of cell 2. The EN pin is electrically connected to the in-place power detection circuit. The LX pin is electrically connected to the positive input terminal of the power device via a diode D3. The FB pin is electrically connected to the positive input terminal of the power device via a 143K resistor R12. The FB pin is grounded via a 10K resistor R13. The inductor has two ends electrically connected to the positive electrode of the battery cell 2 and the positive electrode of the diode respectively.

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

[0046] In addition, the boost circuit further comprises: Capacitor C2, with a capacity of 10UF, one end is electrically connected to the positive terminal of battery cell 2, and the other end is grounded; Capacitor C3, with a capacity of 10UF, one end is electrically connected to the positive terminal of battery cell 2, and the other end is grounded; Capacitor C4, with a capacity of 0.1UF, one end is electrically connected to the positive terminal of battery cell 2, and the other end is grounded; Capacitor C8, with a capacity of 10UF, one end is electrically connected to the positive input terminal of the electrical equipment, and the other end is grounded; Capacitor C9, with a capacity 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 capacity of 10UF, one end of which 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 input and output stability of the boost circuit and protect electrical equipment.

[0048] like Figure 13 As shown, the presence detection circuit includes: Resistor R7, with a resistance of 1M, one end of which is electrically connected to the positive electrode of battery cell 2, and the other end of which is electrically connected to the in-situ power detection component; NPN transistor Q1, the base is electrically connected to the in-place power detection component, the collector is electrically connected to the positive electrode of battery cell 2, and the emitter is electrically connected to the EN pin of the boost chip; Resistor R9 has a resistance of 1M, one end of which is electrically connected to the EN pin of the boost chip, and the other end of which is grounded.

[0049] This circuit can determine whether the battery is placed in the electrical device. Combined with the boost output setting of the boost chip, it can achieve automatic boost output power.

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

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

[0052] A battery presence detection circuit, comprising: An in-place detection chip, wherein the output pin is electrically connected to the positive input terminal of the electrical device; Resistor R7, with a resistance of 1M, has one end electrically connected to both the positive terminal of the power supply and the VCC pin of the presence detection chip, and the other end electrically connected to the negative input connector of the power-consuming device; NPN transistor Q1, the base is electrically connected to the negative input terminal of the power device, the collector is electrically connected to the positive pole 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 1M, one end of which is electrically connected to the enable control pin of the presence detection chip, and the other end of which is grounded.

[0053] By judging whether the output negative electrode 52 is directly connected to the resistor R7 in the in-place detection circuit, it is automatically judged whether the battery is placed in the electrical device, and the judgment result signal is output to the enable control pin of the in-place detection chip to control the voltage control of the output positive electrode 51 by the in-place detection chip. In this circuit, the in-place detection chip can be used Figure 13 The boost chip in the circuit diagram.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

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

2. The battery according to claim 1, characterized in that The output negative electrode is provided with a groove, a protrusion or a notch, and the in-place detection unit is arranged at the groove, the protrusion or the notch. When the battery is electrically connected and plugged into an electrical device or an electrical socket, the in-place detection unit is electrically connected and contacted with the input negative electrode connector of the battery and the electrical device or the electrical socket.

3. The battery according to claim 2, characterized in that The presence detection unit comprises: The insulator is plate-shaped and 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 has the same shape as the U-shaped groove, is accommodated in the U-shaped groove, and is electrically connected to the in-situ detection circuit of the circuit board.

4. The battery according to any one of claims 1 to 3, characterized in that: It also includes a charging connector connected to a circuit board, on which a charging circuit is provided.

5. The battery according to claim 4, characterized in that Also includes: The box body is in the shape of an open box, in which the battery cell, circuit board and charging connector are located. The open end surface of the box body is provided with an annular convex edge, and the bottom is provided with a through hole for exposing the plug-in part of the charging connector; The cover plate has an annular groove on its inner surface that matches the annular ridge and is buckled onto the opening end of the box body; the output positive electrode, output negative electrode and in-situ detection unit are all arranged on the outer surface of the cover plate and are electrically connected to the circuit board inside the box body through the cover plate.

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

7. The battery according to claim 1, characterized in that The boost circuit comprises: The boost chip has its OC pin connected to ground via resistor R8, its VCC pin electrically connected to the positive electrode of the battery cell, its EN pin electrically connected to the in-place power detection circuit, its LX pin electrically connected to the positive input terminal of the power device via diode D3, and its FB pin electrically connected to the positive input terminal of the power device via resistor R12. The FB pin is grounded via resistor R13; The inductor has two ends electrically connected to the positive electrode of the battery cell and the positive electrode of the diode respectively; Capacitor C2, with a capacity of 10UF, one end is electrically connected to the positive terminal of battery cell 2, and the other end is grounded; Capacitor C3, with a capacity of 10UF, one end is electrically connected to the positive terminal of battery cell 2, and the other end is grounded; Capacitor C4, with a capacity of 0.1UF, one end is electrically connected to the positive terminal of battery cell 2, and the other end is grounded; Capacitor C8, with a capacity of 10UF, one end is electrically connected to the positive input terminal of the electrical equipment, and the other end is grounded; Capacitor C9, with a capacity 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 capacity of 10UF, one end of which is electrically connected to the positive input terminal of the electrical equipment, and the other end is grounded.

8. The battery according to claim 7, characterized in that The presence detection circuit comprises: Resistor R7, one end of which is electrically connected to the positive electrode of the battery cell, and the other end of which is electrically connected to the in-situ power detection component; NPN transistor Q1, the base is electrically connected to the in-place power detection component, the collector is electrically connected to the positive electrode of the battery cell, and the emitter is electrically connected to the EN pin of the boost chip; Resistor R9 has one end electrically connected to the EN pin of the boost chip and the other end grounded.

9. The battery according to claim 1, characterized in that The circuit board is also equipped with a charge and discharge protection circuit, which includes: The charge and discharge protection chip has its VM pin grounded, its GND pin electrically connected to the negative electrode of the battery cell, its VDD pin electrically connected to the positive electrode of the battery cell through the resistor R14, and its VDD pin electrically connected to the negative electrode of the battery cell through the capacitor C12.

10. A battery presence detection circuit, characterized in that: include: An in-place detection chip, wherein the output pin is electrically connected to the positive input terminal of the electrical device; Resistor R7, one end of which is electrically connected to the positive electrode of the power supply and the VCC pin of the presence detection chip, and the other end of which is electrically connected to the negative input connector of the power-consuming device; NPN transistor Q1, the base is electrically connected to the negative input terminal of the power device, the collector is electrically connected to the positive pole 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; The resistor R9 has one end electrically connected to the enable control pin of the presence detection chip and the other end grounded.

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