CN211614597U

CN211614597U - Control circuit of spot welding machine

Info

Publication number: CN211614597U
Application number: CN201922273993.0U
Authority: CN
Inventors: 周刚先
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-02
Anticipated expiration: 2029-12-18

Abstract

The utility model provides a spot welder control circuit, including first control module U1, second control module U2, first power K1, second power K2, first electric capacity C1, second electric capacity C2, first switch AK1, second switch AK2, first welding needle A1 and second welding needle A2; the anode of the first power supply K1 is connected to one end of a first capacitor C1 and one end of a first switch AK1, respectively, and the cathode of the first power supply K1 is connected to the other end of the first capacitor C1, one end of a second switch AK2 and a second welding pin a2, respectively; the anode of the second power supply K2 is connected to one end of the second capacitor C2 and the other end of the second switch AK2, respectively, and the cathode of the second power supply K2 is connected to the other end of the second capacitor C2, the other end of the first switch AK1 and the first pin a1, respectively. The utility model discloses can be effective and stable provide welding current for thereby two solder joints are even more stable.

Description

Control circuit of spot welding machine

Technical Field

The utility model relates to a battery spot welding technical field especially relates to a spot welder control circuit.

Background

The cylindrical lithium battery is widely applied to batteries of electric bicycles, mobile power supplies and notebook computers. According to the requirements of capacity and output voltage, single cylindrical batteries with fixed capacity and output voltage are required to be combined in series and parallel, and nickel sheets are used as series and parallel conductors and input and output conductors and welded on the batteries. In the existing spot welding machine, a loop of a control circuit only has one direction and is too single, the welding time and the welding pressure are usually changed from an anode to a cathode by current to achieve the welding effect, and the welding of the welding spot is not firm.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the current battery welding and appear rosin joint and the technical problem that machining efficiency is low easily, provide a spot welder control circuit.

The utility model provides a spot welder control circuit, including first control module U1, second control module U2, first power K1, second power K2, first electric capacity C1, second electric capacity C2, first switch AK1, second switch AK2, first welding needle A1 and second welding needle A2; the anode of the first power supply K1 is connected to one end of a first capacitor C1 and one end of a first switch AK1, respectively, and the cathode of the first power supply K1 is connected to the other end of the first capacitor C1, one end of a second switch AK2 and a second welding pin a2, respectively; the anode of the second power supply K2 is connected to one end of the second capacitor C2 and the other end of the second switch AK2, respectively, and the cathode of the second power supply K2 is connected to the other end of the second capacitor C2, the other end of the first switch AK1 and the first pin a1, respectively.

Further, the control circuit further comprises a third control module U3, a fourth control module U4, a third power supply K3, a fourth power supply K4, a third capacitor C3, a fourth capacitor C4, a third switch AK3, a fourth switch AK4, a third welding pin A3 and a fourth welding pin A4; the anode of the third power supply K3 is connected to the three terminals of the third capacitor C3 and the third switch AK3, respectively, and the cathode of the third power supply K3 is connected to the other three terminals of the third capacitor C3, the three terminals of the fourth switch AK4, and the fourth welding pin a4, respectively; the positive electrode of the fourth power supply K4 is connected to the three terminals of the fourth capacitor C4 and the other three terminals of the fourth switch AK4, respectively, and the negative electrode of the fourth power supply K4 is connected to the other three terminals of the fourth capacitor C4, the other three terminals of the third switch AK3, and the third welding pin a3, respectively.

Further, the first control module U1, the second control module U2, the third control module U3, and the fourth control module U4 are disposed on a control chip.

Further, the first power supply K1, the second power supply K2, the third power supply K3 and the fourth power supply K4 employ switching power supplies.

The utility model has the advantages that: the utility model discloses a first switch AK1 and second switch AK2 are the discharge switch, when the spot welder gives discharge signal, switch on when first switch AK1, and second switch AK2 ends, and first electric capacity C1 gets back to second power K2 and second electric capacity C2's negative pole after first welding needle A1 from first electric capacity C1's positive pole through the charging of first power K1, positive negative pole appears; when the second switch AK2 is turned on. When the first switch AK1 is turned off, the second capacitor C2 is charged by the second power supply K2 to generate a positive electrode and a negative electrode, and the second current returns to the first power supply K1 and the negative electrode of the first capacitor C1 after passing through the second welding pin a2 from the positive electrode of the second capacitor C2, so that the two currents are opposite in direction, and the compensation electrode effect is achieved; welding current can be effectively and stably provided, so that the two welding spots are uniform and more stable.

Drawings

Fig. 1 is a schematic connection diagram of an embodiment of a spot welder control circuit according to the present invention.

Fig. 2 is a schematic connection diagram of another embodiment of the spot welder control circuit of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model provides a spot welder control circuit, including first control module U1, second control module U2, first power K1, second power K2, first electric capacity C1, second electric capacity C2, first switch AK1, second switch AK2, first welding needle A1 and second welding needle A2; the anode of the first power supply K1 is connected to one end of a first capacitor C1 and one end of a first switch AK1, respectively, and the cathode of the first power supply K1 is connected to the other end of the first capacitor C1, one end of a second switch AK2 and a second welding pin a2, respectively; the anode of the second power supply K2 is connected to one end of the second capacitor C2 and the other end of the second switch AK2, respectively, and the cathode of the second power supply K2 is connected to the other end of the second capacitor C2, the other end of the first switch AK1 and the first pin a1, respectively.

The utility model discloses a first switch AK1 and second switch AK2 are the discharge switch, when the spot welder gives discharge signal, switch on when first switch AK1, and second switch AK2 ends, and first electric capacity C1 gets back to second power K2 and second electric capacity C2's negative pole after first welding needle A1 from first electric capacity C1's positive pole through the charging of first power K1, positive negative pole appears; when the second switch AK2 is turned on. When the first switch AK1 is turned off, the second capacitor C2 is charged by the second power supply K2 to generate a positive electrode and a negative electrode, and the second current returns to the first power supply K1 and the negative electrode of the first capacitor C1 after passing through the second welding pin a2 from the positive electrode of the second capacitor C2, so that the two currents are opposite in direction, and the compensation electrode effect is achieved; welding current can be effectively and stably provided, so that the two welding spots are uniform and more stable.

In an optional embodiment, the control circuit further comprises a third control module U3, a fourth control module U4, a third power supply K3, a fourth power supply K4, a third capacitor C3, a fourth capacitor C4, a third switch AK3, a fourth switch AK4, a third pin A3, and a fourth pin a 4; the anode of the third power supply K3 is connected to the three terminals of the third capacitor C3 and the third switch AK3, respectively, and the cathode of the third power supply K3 is connected to the other three terminals of the third capacitor C3, the three terminals of the fourth switch AK4, and the fourth welding pin a4, respectively; the positive electrode of the fourth power supply K4 is connected to the three terminals of the fourth capacitor C4 and the other three terminals of the fourth switch AK4, respectively, and the negative electrode of the fourth power supply K4 is connected to the other three terminals of the fourth capacitor C4, the other three terminals of the third switch AK3, and the third welding pin a3, respectively.

In this embodiment, the control circuit adopts 4 welding pins to weld, and the control circuit works simultaneously to achieve two loops simultaneously to enable four welded points to be welded uniformly, the welding time and power value are all adjusted by the control chip at will to achieve the purpose of welding different products, and the problem of inconsistent impedance of the welded products can be compensated.

In an alternative embodiment, the first, second, third and fourth control modules U1, U2, U3 and U4 are provided on a control chip. The spot welding machine is convenient to control.

In an alternative embodiment, the first power supply K1, the second power supply K2, the third power supply K3 and the fourth power supply K4 employ switching power supplies.

The invention can effectively achieve the consistent energy generated by welding the two loops by matching with the pressure regulation of the mechanical welding needle, and the power box monitors whether the current of the two loops is in the set range. When the current is lower than the set parameter, the control board gives an alarm, when the voltage equipment with the capacitor not reaching the set value discharges, the current output each time is consistent, and the phenomenon that the current of a single loop cannot reach and the welding is inconsistent due to the adoption of two paths of detection overcurrent signals is avoided. The pulse time controlled by the control chip is high in precision, the first power supply K1, the second power supply K2, the third power supply K3 and the fourth power supply K4 adopt high-precision switching power supplies (with PFC), and the welded product can achieve ideal effects only when the power supplies are charged after the capacitors are discharged and the energy of the capacitors is consistent.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.

Claims

1. A spot welder control circuit is characterized by comprising a first control module U1, a second control module U2, a first power supply K1, a second power supply K2, a first capacitor C1, a second capacitor C2, a first switch AK1, a second switch AK2, a first welding pin A1 and a second welding pin A2; the anode of the first power supply K1 is connected to one end of a first capacitor C1 and one end of a first switch AK1, respectively, and the cathode of the first power supply K1 is connected to the other end of the first capacitor C1, one end of a second switch AK2 and a second welding pin a2, respectively; the anode of the second power supply K2 is connected to one end of the second capacitor C2 and the other end of the second switch AK2, respectively, and the cathode of the second power supply K2 is connected to the other end of the second capacitor C2, the other end of the first switch AK1 and the first pin a1, respectively.

2. The spot welder control circuit of claim 1, further comprising a third control module U3, a fourth control module U4, a third power supply K3, a fourth power supply K4, a third capacitor C3, a fourth capacitor C4, a third switch AK3, a fourth switch AK4, a third pin A3, and a fourth pin a 4; the anode of the third power supply K3 is connected to the three terminals of the third capacitor C3 and the third switch AK3, respectively, and the cathode of the third power supply K3 is connected to the other three terminals of the third capacitor C3, the three terminals of the fourth switch AK4, and the fourth welding pin a4, respectively; the positive electrode of the fourth power supply K4 is connected to the three terminals of the fourth capacitor C4 and the other three terminals of the fourth switch AK4, respectively, and the negative electrode of the fourth power supply K4 is connected to the other three terminals of the fourth capacitor C4, the other three terminals of the third switch AK3, and the third welding pin a3, respectively.

3. The spot welder control circuit of claim 2, wherein the first control module U1, the second control module U2, the third control module U3, and the fourth control module U4 are disposed on a control chip.

4. The spot welder control circuit according to claim 2, wherein the first power supply K1, the second power supply K2, the third power supply K3 and the fourth power supply K4 employ switching power supplies.