Primary identification voltage circuit for charger

Abstract

The utility model discloses and provides a primary identification voltage circuit for a charger, which comprises a transformer T1, a full-bridge rectifier circuit module, a filter circuit module and a voltage division circuit module, the primary end of the transformer T1 is connected with an alternating current signal input end, the secondary end of the transformer T1 is connected with the full-bridge rectifier circuit module, and the filter circuit module is connected with the voltage division circuit module. The full-bridge rectifier circuit module is connected with the filter circuit module, the filter circuit module is connected with the voltage division circuit module, the voltage division circuit module is connected with a connecting terminal P1, and the connecting terminal P1 is connected with a numerical control board. Primary and secondary are isolated through the industrial frequency transformer T1, primary signals are rectified, filtered and subjected to voltage division through the full-bridge rectifier circuit module, the filter circuit module and the voltage division circuit module, then the signals are received by the numerical control board, the numerical control board controls the charger, the circuit is added, the charger is controlled at high voltage or low voltage, and the charging efficiency is improved. Therefore, the charger is protected.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of chargers, in particular to a primary identification voltage circuit for a charger. BACKGROUND

[0002] A charger is a device for charging a battery. Different chargers need to be connected to different voltages. If the input voltage is too high or too low, it will cause damage to the charger. The current charger does not have the function of identifying the input voltage, and if an inappropriate voltage is connected during use, it will cause damage to the charger. CONTENT OF THE INVENTION

[0003] The present disclosure provides a primary identification voltage circuit for a charger to solve the technical problem recognized by the inventor.

[0004] The present disclosure provides a primary identification voltage circuit for a charger, comprising a transformer T1, a full-bridge rectifier circuit module, a filter circuit module and a voltage divider circuit module, the primary end of the transformer T1 is connected with an alternating current signal input end, the secondary end of the transformer T1 is connected with the full-bridge rectifier circuit module, the full-bridge rectifier circuit module is connected with the filter circuit module, the filter circuit module is connected with the voltage divider circuit module, the voltage divider circuit module is connected with a connection terminal P1, and the connection terminal P1 is connected with a digital control panel.

[0005] Preferably, the transformer T1 is a power frequency transformer.

[0006] Preferably, the full-bridge rectifier circuit module comprises diodes D1, D2, D3 and D4, the first and second pins of the transformer T1 are respectively connected with the alternating current signal input end, the third pin of the transformer T1 is respectively connected with the anode of the diode D1 and the cathode of the diode D4, the fourth pin of the transformer T1 is respectively connected with the cathode of the diode D2 and the anode of the diode D3, the anode of the diode D4 and the anode of the diode D2 are connected, and the cathode of the diode D1 and the cathode of the diode D3 are connected.

[0007] Preferably, the filter circuit module comprises a capacitor C2, one end of the capacitor C2 is respectively connected with the cathode of the diode D1 and the cathode of the diode D3, and the other end of the capacitor C2 is respectively connected with the anode of the diode D4 and the anode of the diode D2.

[0008] Preferably, the voltage dividing circuit module comprises resistors Ra01 and Ra2, the resistors Ra01 and Ra2 are connected in series, one end of the resistor Ra01 is connected with one end of the capacitor C2, one end of the resistor Ra2 is connected with the other end of the capacitor C2, and the two ends of the resistor Ra2 are connected with the first and second pins of the connection terminal P1 respectively.

[0009] The utility model discloses a benefit mainly lies in: the utility model discloses a primary and secondary are isolated by power transformer T1, and the signal of primary is rectified, filtered and divided through full -bridge rectifier circuit module, filter circuit module and voltage dividing circuit module, and then receives the signal by numerical control board, and the numerical control board controls the charger, adds the circuit, controls the charger when high voltage or low voltage, and the charger does not work, thereby protecting the charger.

[0010] It should be understood that both the foregoing general description and the following detailed description are intended for purposes of illustration and description, and are not intended to limit the disclosure. The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate the subject matter of the disclosure. Furthermore, the description and drawings are to be construed together in order to explain the principles of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0012] Figure 1 The primary identification voltage circuit diagram of the embodiment of the present disclosure;

[0013] Icon: 100-full bridge rectifier circuit module; 200-filter circuit module; 300-voltage dividing circuit module. DETAILED DESCRIPTION

[0014] The technical solutions of the present disclosure will be described in detail below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all embodiments.

[0015] Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present disclosure.

[0016] In the description of the present disclosure, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present disclosure, it should be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0018] Embodiment

[0019] As Figure 1 shown, the embodiment provides a primary identification voltage circuit for a charger, which comprises a transformer T1, a full-bridge rectifier circuit module 100, a filter circuit module 200 and a voltage dividing circuit module 300, the primary end of the transformer T1 is connected with an alternating current signal input end, the secondary end of the transformer T1 is connected with the full-bridge rectifier circuit module 100, the full-bridge rectifier circuit module 100 is connected with the filter circuit module 200, the filter circuit module 200 is connected with the voltage dividing circuit module 300, the voltage dividing circuit module 300 is connected with a connection terminal P1, and the connection terminal P1 is connected with a numerical control panel. The alternating current signal enters from the primary end of the transformer T1, is rectified by the full-bridge rectifier circuit module 100 after the primary-secondary isolation of the transformer T1, is filtered by the filter circuit module 200, is divided by the voltage dividing circuit module 300, and finally is sent to the numerical control panel through the connection terminal P1 connected with the numerical control panel. After receiving the signal, the numerical control panel controls the charger to work.

[0020] Specifically, the transformer T1 is a power frequency transformer, which has the characteristics of high efficiency, energy saving, safety and reliability, and strong applicability, can change the voltage of 50Hz or 60Hz alternating current, and can isolate the primary and secondary through the power frequency transformer.

[0021] Specifically, the full-bridge rectifier circuit module 100 includes diodes D1, D2, D3, D4, the first and second pins of the transformer T1 are connected to the AC signal input end respectively, the third pin of the transformer T1 is connected to the positive electrode of the diode D1 and the negative electrode of the diode D4 respectively, the fourth pin of the transformer T1 is connected to the negative electrode of the diode D2 and the positive electrode of the diode D3 respectively, the positive electrode of the diode D4 and the positive electrode of the diode D2 are connected, and the negative electrode of the diode D1 and the negative electrode of the diode D3 are connected. The full-bridge rectifier circuit module 100 is formed by diodes D1, D2, D3 and D4, and the signal isolated by the transformer T1 is rectified by diodes D1, D2, D3 and D4 and then enters the filter circuit module 200.

[0022] Specifically, the filter circuit module 200 includes a capacitor C2, one end of the capacitor C2 is connected to the negative electrode of the diode D1 and the negative electrode of the diode D3 respectively, and the other end of the capacitor C2 is connected to the positive electrode of the diode D4 and the positive electrode of the diode D2 respectively. After the AC signal is rectified, it is filtered by the capacitor C2 and then enters the voltage dividing circuit module 300.

[0023] Specifically, the voltage dividing circuit module 300 includes resistors Ra01 and Ra2, the resistors Ra01 and Ra2 are connected in series, one end of the resistor Ra01 is connected to one end of the capacitor C2, one end of the resistor Ra2 is connected to the other end of the capacitor C2, and the two ends of the resistor Ra2 are connected to the first and second pins of the connection terminal P1 respectively. The filtered AC signal is divided by the resistors Ra01 and Ra2, and finally enters the numerical control panel, which controls the charger after receiving the signal.

[0024] The working principle of the utility model is: the primary and secondary signals are isolated by the power frequency transformer T1, the primary signal is rectified, filtered and divided by the full-bridge rectifier circuit module 100, the filter circuit module 200 and the voltage dividing circuit module 300, and then the signal is received by the numerical control panel, so that the numerical control panel controls the charger.

[0025] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present disclosure, but not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A primary identification voltage circuit for a charger, characterized by, Include: Transformer T1, full bridge rectifier circuit module, filter circuit module and voltage divider circuit module, the primary side of the transformer T1 is connected with AC signal input end, the secondary side of the transformer T1 is connected with the full bridge rectifier circuit module, the full bridge rectifier circuit module is connected with the filter circuit module, the filter circuit module is connected with the voltage divider circuit module, the voltage divider circuit module is connected with the connecting terminal P1, the connecting terminal P1 is connected with the numerical control panel.

2. A primary identification voltage circuit for a charger according to claim 1, characterized in that, The transformer T1 is a power frequency transformer.

3. A primary identification voltage circuit for a charger according to claim 1 or 2, characterized in that, The full bridge rectifier circuit module includes diode D1, D2, D3, D4, the first and second pins of the transformer T1 are connected with AC signal input end respectively, the third pin of the transformer T1 is connected with the positive electrode of diode D1 and the negative electrode of diode D4 respectively, the fourth pin of the transformer T1 is connected with the negative electrode of diode D2 and the positive electrode of diode D3 respectively, the positive electrode of diode D4 and the positive electrode of diode D2 are connected, the negative electrode of diode D1 and the negative electrode of diode D3 are connected.

4. A primary identification voltage circuit for a charger according to claim 3, wherein, The filter circuit module includes capacitor C2, one end of the capacitor C2 is connected with the negative electrode of diode D1 and the negative electrode of diode D3 respectively, the other end of the capacitor C2 is connected with the positive electrode of diode D4 and the positive electrode of diode D2 respectively.

5. A primary identification voltage circuit for a charger according to claim 4, wherein, The voltage divider circuit module includes resistors Ra01 and Ra2, the resistors Ra01 and Ra2 are connected in series, one end of the resistor Ra01 is connected with one end of the capacitor C2, one end of the resistor Ra2 is connected with the other end of the capacitor C2, the two ends of the resistor Ra2 are connected with the first and second pins of the connecting terminal P1 respectively.

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