Lithium battery spot welding machine device based on super capacitor

Abstract

The utility model belongs to the technical field of battery production and test design, and particularly relates to a lithium battery spot welding machine device based on a super capacitor. The device comprises a chip control circuit and an electric welding control circuit, the chip control circuit comprises a single chip microcomputer U22; the chip control circuit is connected with the electric welding control circuit through an adjusting circuit, and the adjusting circuit is used for assisting the chip control circuit to adjust the on-off period and the duty ratio of the electric welding control circuit. The device is controlled by a C2000DSP (Digital Signal Processor), has the functions of setting discharge pulse width and the like, is convenient to carry, and is extremely suitable for temporary repair welding and after-sales occasions of battery packs.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery production and test design, and in particular relates to a lithium battery spot welding device based on a supercapacitor. Background Art

[0002] With the popularity of electric vehicles, more and more batteries are needed, which involves the repair welding of battery systems, requiring frequent and flexible use of spot welding machines. Utility Model Content

[0003] In view of the above problems, the present disclosure provides a lithium battery spot welding device based on supercapacitor, the device comprising a chip control circuit and an electric welding control circuit;

[0004] The chip control circuit includes a single chip microcomputer U22;

[0005] The chip control circuit is connected to the electric welding control circuit via a regulating circuit, and the regulating circuit is used to assist the chip control circuit in regulating the on-off cycle and duty cycle of the electric welding control circuit.

[0006] Preferably, the electric welding control circuit includes a plurality of MOS tubes connected in parallel.

[0007] Preferably, the electric welding control circuit further comprises a battery pack, pins 5 to 9 of the MOS tube are all connected to the positive electrode of the battery pack, and the negative electrode of the battery pack is grounded.

[0008] Preferably, the electric welding control circuit includes four MOS tubes connected in parallel.

[0009] Preferably, the regulating circuit comprises a field effect tube, a diode and a resistor, the gate of the field effect tube is connected to the positive electrode of the diode, the drain of the field effect tube is connected to the negative electrode of the diode, and every No. 4 pin of the MOS tube is connected to the source of the field effect tube;

[0010] The positive electrode of the diode is grounded, and the negative electrode of the diode is connected to the single chip computer U22;

[0011] The first end of the resistor is connected to the anode of the diode, and the second end of the resistor is connected to the cathode of the diode.

[0012] Preferably, the single chip microcomputer U22 is connected to the regulating circuit via an IO control chip.

[0013] Preferably, pin 1 of the IO control chip is connected to the second end of the resistor.

[0014] Preferably, pin 6 of the IO control chip is grounded.

[0015] Preferably, the device further comprises a pen tip chip, and pin No. 2 of the pen tip chip is connected to the negative electrode of the battery pack.

[0016] Preferably, pins 1-3 of each of the MOS tubes are connected to pin 1 of the pen tip chip.

[0017] The present disclosure has the following beneficial effects:

[0018] The utility model adopts C2000DSP control, has the functions of discharge pulse width setting, etc., is easy to carry, and is extremely suitable for temporary repair welding and after-sales occasions of battery packs.

[0019] Other features and advantages of the present disclosure will be described in the following description, and partly become apparent from the description, or be understood by implementing the present disclosure. The purpose and other advantages of the present disclosure can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A diagram of a lithium battery spot welding machine based on a supercapacitor in an embodiment of the present disclosure is shown;

[0022] Figure 2 A partial diagram of a spot welding machine control circuit in an embodiment of the present disclosure is shown;

[0023] Figure 3 A physical picture of a circuit board of a lithium battery spot welding device based on a supercapacitor in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0024] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the present disclosure will be more comprehensive and complete, and the concepts of the example embodiments are fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known technical solutions are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0025] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware units or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0026] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the steps. For example, some steps may be decomposed, while some steps may be combined or partially combined, so the actual execution order may change according to the actual situation.

[0027] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0028] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or sub-modules is not necessarily limited to those steps or sub-modules explicitly listed, but may include other steps or sub-modules not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0029] like Figure 1 As shown, the present invention proposes a lithium battery spot welding device based on a supercapacitor, the device comprising a chip control circuit and an electric welding control circuit;

[0030] The chip control circuit includes a single chip microcomputer U22;

[0031] The chip control circuit is connected to the electric welding control circuit via a regulating circuit, and the regulating circuit is used to assist the chip control circuit in regulating the on-off cycle and duty cycle of the electric welding control circuit.

[0032] Figure 3 The physical circuit board of the device is shown. Figure 3 The chip control circuit adopts C2000DSP control, with discharge pulse width setting, small size, low cost, easy to carry, convenient and fast power supply, easy to carry, extremely suitable for temporary battery welding occasions. The C2000 series DSP used has the characteristics of fast calculation speed, rich chip peripheral resources, stable performance and low price.

[0033] Specifically, the electric welding control circuit includes a plurality of MOS tubes connected in parallel.

[0034] Specifically, the electric welding control circuit also includes a battery pack, pins 5 to 9 of the MOS tube are all connected to the positive electrode of the battery pack, and the negative electrode of the battery pack is grounded.

[0035] Specifically, the welding control circuit includes four MOS tubes connected in parallel, such as Figure 2 In this embodiment, the MOS tube has a continuous overcurrent capacity of 300A, and four tubes connected in parallel can achieve a 1200A discharge.

[0036] Specifically, the regulating circuit includes a field effect tube, a diode and a resistor, the gate of the field effect tube is connected to the positive electrode of the diode, the drain of the field effect tube is connected to the negative electrode of the diode, and every No. 4 pin of the MOS tube is connected to the source of the field effect tube;

[0037] The positive electrode of the diode is grounded, and the negative electrode of the diode is connected to the single chip computer U22;

[0038] The first end of the resistor is connected to the anode of the diode, and the second end of the resistor is connected to the cathode of the diode.

[0039] Specifically, the single chip microcomputer U22 is connected to the regulating circuit via an IO control chip.

[0040] Specifically, pin No. 1 of the IO control chip is connected to the second end of the resistor.

[0041] Specifically, pin 6 of the IO control chip is grounded.

[0042] Specifically, the device also includes a pen tip chip, and pin No. 2 of the pen tip chip is connected to the negative electrode of the battery pack.

[0043] Specifically, pins 1-3 of each of the MOS tubes are connected to pin 1 of the pen tip chip.

[0044] Those skilled in the art should understand that although the present disclosure is described in detail with reference to the aforementioned embodiments, it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A lithium battery spot welding device based on supercapacitor, characterized in that: The device comprises a chip control circuit and an electric welding control circuit; The chip control circuit includes a single chip microcomputer U22; The chip control circuit is connected to the electric welding control circuit via a regulating circuit, and the regulating circuit is used to assist the chip control circuit in regulating the on-off cycle and duty cycle of the electric welding control circuit.

2. The supercapacitor-based lithium battery spot welding device according to claim 1, characterized in that: The electric welding control circuit comprises a plurality of MOS tubes connected in parallel.

3. The supercapacitor-based lithium battery spot welding device according to claim 2, characterized in that: The electric welding control circuit also includes a battery pack, pins 5 to 9 of the MOS tube are all connected to the positive electrode of the battery pack, and the negative electrode of the battery pack is grounded.

4. The supercapacitor-based lithium battery spot welding device according to claim 2, characterized in that: The electric welding control circuit comprises four MOS tubes connected in parallel.

5. The supercapacitor-based lithium battery spot welding device according to claim 2, characterized in that: The regulating circuit includes a field effect tube, a diode and a resistor, the gate of the field effect tube is connected to the positive electrode of the diode, the drain of the field effect tube is connected to the negative electrode of the diode, and every No. 4 pin of the MOS tube is connected to the source of the field effect tube; The positive electrode of the diode is grounded, and the negative electrode of the diode is connected to the single chip computer U22; The first end of the resistor is connected to the anode of the diode, and the second end of the resistor is connected to the cathode of the diode.

6. The supercapacitor-based lithium battery spot welding device according to claim 5, characterized in that: The single chip microcomputer U22 is connected to the regulating circuit via an IO control chip.

7. The supercapacitor-based lithium battery spot welding device according to claim 6, characterized in that: Pin No. 1 of the IO control chip is connected to the second end of the resistor.

8. The supercapacitor-based lithium battery spot welding device according to claim 6, characterized in that: Pin 6 of the IO control chip is grounded.

9. The supercapacitor-based lithium battery spot welding device according to claim 3, characterized in that: The device also includes a pen tip chip, and a No. 2 pin of the pen tip chip is connected to the negative electrode of the battery pack.

10. The supercapacitor-based lithium battery spot welding device according to claim 9, characterized in that: Pins 1-3 of each of the MOS tubes are connected to pin 1 of the pen tip chip.

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