Charging mutual recognition device for lead-acid storage battery pack and charger of electric bicycle

Abstract

The utility model relates to the technical field of electric power engineering, in particular to a charging mutual recognition device for a lead-acid storage battery pack and a charger of an electric bicycle, which comprises a circuit board, a lead-acid storage battery pack end mutual recognition module, a relay J1, a switch voltage-stabilized power supply unit, a charging unit and a thermosensitive subunit, the relay J1 is respectively connected with the switch voltage-stabilized power supply unit, the charging unit and the thermosensitive subunit, the switch voltage-stabilized power supply unit provides stable voltage output, the charging unit can monitor the voltage and current of a battery, and meanwhile, when the temperature is too high, the thermosensitive subunit can trigger the charging unit to take corresponding protection measures, so that the safety of the battery is ensured. If the charging current is reduced or the charging is stopped, the battery is prevented from being damaged due to overheating, so that the battery pack and the charger can be safely and effectively charged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power engineering, in particular to a charging mutual recognition device for a lead-acid battery pack and a charger of an electric bicycle. Background Art

[0002] Generally, lead-acid battery packs and chargers of different brands or models may be incompatible, which requires users to perform a complicated matching process when replacing batteries or chargers. The mutual recognition device for the lead-acid battery pack and charger of an electric bicycle is a system for ensuring that the battery pack and the charger can charge and communicate safely and effectively, and can solve the compatibility issues between lead-acid battery packs and chargers of different brands or models. With the completion of the implementation of the revised versions of the national standards GB17761, GB42295 and GB42296, the mutual recognition of lead-acid battery packs and chargers for electric bicycles is about to be enforced. For this reason, the utility model proposes a low-cost, simple and reliable implementation device. Utility Model Content

[0003] The purpose of the utility model is to provide a charging mutual recognition device for a lead-acid battery pack and a charger of an electric bicycle, aiming to solve the technical problem in the prior art of ensuring that the battery pack and the charger can be charged safely and effectively.

[0004] To achieve the above-mentioned purpose, the utility model adopts a charging mutual recognition device for a lead-acid battery pack of an electric bicycle and a charger, comprising a circuit board and a lead-acid battery pack end mutual recognition module, wherein the lead-acid battery pack end mutual recognition module is arranged on the surface of the circuit board;

[0005] The lead-acid battery group end mutual recognition module includes a relay J1, a switching voltage-stabilized power supply unit, a charging unit and a thermal sub-unit. The relay J1 is connected to the switching voltage-stabilized power supply unit, the charging unit and the thermal sub-unit respectively.

[0006] The switching regulated power supply unit includes a chip U1, an amplifier D1, an amplifier D2, an inductor L1, a capacitor C1, a capacitor C2 and a capacitor C3. The chip U1 is connected to the relay J1, the amplifier D1, the amplifier D2, the inductor L1 and the capacitor C1 respectively, and the capacitor C2 is connected to the amplifier D1, the amplifier D2, the capacitor C3 and the inductor L1 respectively.

[0007] The charging unit includes a chip U2, a resistor R1, a resistor R2, a resistor R4 and a transistor Q1, and the chip U2 is respectively connected to the inductor L1, the capacitor C2, the capacitor C3, the amplifier D1, the resistor R1, the resistor R2, the resistor R4 and the transistor Q1.

[0008] The thermal sub-unit is a thermistor R3, and the thermistor R3 is connected to the resistor R2, the transistor Q1, the chip U2 and the capacitor C3 respectively.

[0009] The utility model provides a charging mutual recognition device for a lead-acid battery pack and a charger for an electric bicycle. The switching voltage-stabilizing power supply unit provides a stable voltage output, and the charging unit can monitor the voltage and current of the battery. At the same time, when the temperature is too high, the thermal sub-unit can trigger the charging unit to take corresponding protective measures, such as reducing the charging current or stopping charging, to prevent the battery from being damaged by overheating, so that the battery pack and the charger can be charged safely and effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 The utility model is a circuit principle diagram of a lead-acid battery pack end mutual recognition board of a lead-acid battery pack and a charger mutual recognition device for an electric bicycle.

[0012] Figure 2 The utility model is a structural schematic diagram of a circuit board of a lead-acid battery pack and a charger mutual charging recognition device for an electric bicycle.

[0013] 100-circuit board, 200-lead-acid battery pack end mutual recognition module. DETAILED DESCRIPTION

[0014] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0015] See also Figures 1 and 2 ,in Figure 1 This is a structural diagram of the lead-acid battery pack terminal mutual recognition board 1 of the lead-acid battery pack and charger mutual recognition device for electric bicycles of the present invention. Figure 2 The utility model is a circuit diagram of a lead-acid battery pack end mutual recognition board 1 of a charging mutual recognition device for a lead-acid battery pack of an electric bicycle and a charger.

[0016] The utility model provides a charging mutual recognition device for a lead-acid battery pack and a charger of an electric bicycle, comprising a circuit board 100 and a lead-acid battery pack end mutual recognition module 200, wherein the lead-acid battery pack end mutual recognition module 200 is arranged on the surface of the circuit board 100;

[0017] The lead-acid battery group end mutual recognition module 200 includes a relay J1, a switching voltage-stabilized power supply unit, a charging unit, and a thermal sub-unit. The relay J1 is connected to the switching voltage-stabilized power supply unit, the charging unit, and the thermal sub-unit respectively.

[0018] In this embodiment, the switching voltage-stabilizing power supply unit provides a stable voltage output, and the charging unit can monitor the voltage and current of the battery. At the same time, when the temperature is too high, the thermal sub-unit can trigger the charging unit to take corresponding protective measures, such as reducing the charging current or stopping charging, to prevent the battery from overheating and damage, so that the battery pack and the charger can be charged safely and effectively.

[0019] Furthermore, the switching regulated power supply unit includes a chip U1, an amplifier D1, an amplifier D2, an inductor L1, a capacitor C1, a capacitor C2 and a capacitor C3. The chip U1 is respectively connected to the relay J1, the amplifier D1, the amplifier D2, the inductor L1 and the capacitor C1, and the capacitor C2 is respectively connected to the amplifier D1, the amplifier D2, the capacitor C3 and the inductor L1.

[0020] In this embodiment, the chip U1 is of model KP311ALGA. The chip U1 monitors current and voltage to ensure that the battery is charged within a safe range. The amplifier D1 and the amplifier D2 are used for rectification to ensure that the current direction is correct. The inductor L1 can reduce current pulsation and noise. The capacitor C1, the capacitor C2 and the capacitor C3 are used for filtering, smoothing the power supply voltage and reducing power supply noise.

[0021] Furthermore, the charging unit includes a chip U2, a resistor R1, a resistor R2, a resistor R4 and a transistor Q1, and the chip U2 is respectively connected to the inductor L1, the capacitor C2, the capacitor C3, the amplifier D1, the resistor R1, the resistor R2, the resistor R4 and the transistor Q1.

[0022] In this embodiment, the chip U2 is of model MC35P7050A0H. The chip U2 monitors the status of the battery, including parameters such as voltage and temperature. It communicates with other components through different pins. The transistor Q1 is of model S8050. The transistor Q1 controls the switch of the charging process. When the battery is full or an abnormality occurs, the charging can be cut off by controlling the transistor Q1. The resistor R1, the resistor R2 and the resistor R4 can play the role of current limiting, voltage dividing and feedback.

[0023] Furthermore, the thermal sub-unit is a thermistor R3, and the thermistor R3 is connected to the resistor R2, the transistor Q1, the chip U2 and the capacitor C3 respectively.

[0024] In this embodiment, the thermistor R3 can sense temperature changes in real time and provide a temperature feedback signal to the circuit.

[0025] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.

Claims

1. A charging mutual recognition device for a lead-acid battery pack and a charger for an electric bicycle, characterized in that: It includes a circuit board and a lead-acid battery group end mutual recognition module, wherein the lead-acid battery group end mutual recognition module is arranged on the surface of the circuit board; The lead-acid battery group end mutual recognition module includes a relay J1, a switching voltage-stabilized power supply unit, a charging unit and a thermal sub-unit. The relay J1 is connected to the switching voltage-stabilized power supply unit, the charging unit and the thermal sub-unit respectively.

2. The charging mutual recognition device between the lead-acid battery pack and the charger of an electric bicycle according to claim 1, characterized in that: The switching regulated power supply unit includes a chip U1, an amplifier D1, an amplifier D2, an inductor L1, a capacitor C1, a capacitor C2 and a capacitor C3. The chip U1 is connected to the relay J1, the amplifier D1, the amplifier D2, the inductor L1 and the capacitor C1 respectively, and the capacitor C2 is connected to the amplifier D1, the amplifier D2, the capacitor C3 and the inductor L1 respectively.

3. The charging mutual recognition device between the lead-acid battery pack and the charger of an electric bicycle as claimed in claim 2, characterized in that: The charging unit includes a chip U2, a resistor R1, a resistor R2, a resistor R4 and a transistor Q1. The chip U2 is connected to the inductor L1, the capacitor C2, the capacitor C3, the amplifier D1, the resistor R1, the resistor R2, the resistor R4 and the transistor Q1 respectively.

4. The charging mutual recognition device between the lead-acid battery pack and the charger of an electric bicycle as claimed in claim 3, characterized in that: The thermal sub-unit is a thermistor R3 , which is connected to the resistor R2 , the transistor Q1 , the chip U2 , and the capacitor C3 , respectively.

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