Super capacitor upper cover, super capacitor and super capacitor module

Abstract

The utility model discloses a super capacitor upper cover, a super capacitor and a super capacitor module. The super capacitor upper cover comprises a cover plate, a positive pole lug, a negative pole lug, a balance resistor and a sealing gasket. A positive pole lug and a negative pole lug which are distributed at an interval and a downwards sunken balance resistor accommodating groove are arranged on the horizontally distributed cover plate; a balance resistor is embedded in the balance resistor accommodating groove; the two ends of the balancing resistor are respectively provided with a lead which is respectively connected with the positive pole lug and the negative pole lug; each lead wire is respectively positioned in one lead wire embedding groove; the top of the cover plate is covered with a sealing gasket; and the lead embedding groove and the balancing resistor accommodating groove are both positioned right below the sealing gasket. According to the utility model, the balancing resistor is arranged in the upper cover of the super capacitor, so that the problems of wrong welding and welding omission caused by the fact that an external balancing resistor (namely the balancing resistor) needs to be welded in a super capacitor module in the prior art are effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of supercapacitors, in particular to a supercapacitor upper cover, a supercapacitor, and a supercapacitor module. Background Art

[0002] Supercapacitors are a new type of energy storage device between traditional capacitors and rechargeable batteries, with a capacity of several hundred to thousands of farads. Compared with traditional capacitors, they have larger capacity, specific energy or energy density, wider operating temperature range and extremely long service life, while compared with batteries, they have higher specific power and are environmentally friendly.

[0003] Supercapacitor is an emerging charge energy storage device with long life, safety, reliability, huge energy storage, and is an ideal energy storage device. It combines the large current fast charging and discharging characteristics of ordinary capacitors with the energy storage characteristics of batteries, filling the gap between ordinary capacitors and batteries in specific energy and specific power. At present, customers have higher and higher performance requirements for supercapacitor products.

[0004] At present, a supercapacitor module including multiple supercapacitor cells is equipped with a balancing resistor, which is mainly externally mounted on a PCB (integrated circuit board) by welding or connected to external electrical components by welding through a wiring harness. Therefore, problems such as wrong welding and missing welding are prone to occur.

[0005] It should be noted that the balancing resistor is directly connected in parallel with the supercapacitor monomer. During the charging process of the supercapacitor module including multiple supercapacitor monomers, the supercapacitor monomers are also discharged through Req, among which the supercapacitor monomers with high voltage discharge faster, thereby playing a role of balancing protection.

[0006] Therefore, there is an urgent need to develop a technology that can solve the above technical problems. Utility Model Content

[0007] The purpose of the utility model is to provide a supercapacitor upper cover, a supercapacitor, and a supercapacitor module in view of the technical defects in the prior art.

[0008] To this end, the utility model provides a supercapacitor upper cover, including a cover plate, a positive electrode tab, a negative electrode tab, a balancing resistor and a sealing gasket;

[0009] The horizontally distributed cover plate is provided with spaced positive pole tabs and negative pole tabs, and a downwardly concave balancing resistor accommodation groove;

[0010] The balancing resistor is accommodated in the groove, and the balancing resistor is embedded therein;

[0011] The two ends of the balancing resistor each have a lead wire connected to the positive electrode tab and the negative electrode tab respectively;

[0012] Each lead is located in a lead embedding groove;

[0013] The top of the cover plate is covered with a sealing gasket;

[0014] The lead embedding groove and the balancing resistor accommodating groove are both located directly below the sealing gasket.

[0015] In addition, the utility model also provides a supercapacitor, which includes the supercapacitor upper cover as described above.

[0016] In addition, the utility model also provides a supercapacitor module, comprising a plurality of supercapacitors as described above connected in series;

[0017] Each supercapacitor is connected in parallel with a balancing resistor.

[0018] It can be seen from the technical solution provided by the above utility model that, compared with the prior art, the utility model provides a supercapacitor upper cover and a supercapacitor, and a supercapacitor module, whose structural design is scientific. The supercapacitor upper cover has a built-in balancing resistor (i.e., a balancing resistor), so that after the supercapacitor upper cover is manufactured to obtain a supercapacitor, the supercapacitor module including a plurality of supercapacitor cells obtained by further assembly no longer requires an external balancing resistor, thereby effectively avoiding the problems of miswelding and leaking welding caused by the need to weld an external balancing resistor (i.e., a balancing resistor) in the supercapacitor module of the prior art, thereby improving the yield rate of the supercapacitor module finally produced, which has great practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional structural schematic diagram of a supercapacitor upper cover provided by the utility model;

[0020] Figure 2 A three-dimensional perspective effect diagram of a supercapacitor cover provided by the utility model;

[0021] Figure 3 A top view of a supercapacitor cover provided by the utility model (without a sealing gasket at this time);

[0022] Figure 4 A front view of a supercapacitor cover provided by the utility model (i.e., a front view, which does not show the balancing resistor and the structural part in front of the lead);

[0023] Figure 5 A cross-sectional view of a supercapacitor cover provided by the utility model;

[0024] Figure 6 A circuit schematic diagram of an embodiment of a supercapacitor module provided by the utility model. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] See also Figures 1 to 6 The utility model provides a supercapacitor upper cover, including a cover plate 1, a positive electrode tab 2, a negative electrode tab 3, a balancing resistor 4 and a sealing gasket 5;

[0030] The horizontally distributed cover plate 1 is provided with spaced positive electrode tabs 2 and negative electrode tabs 3, and a downwardly concave balancing resistor accommodation groove;

[0031] The balancing resistor is accommodated in the groove, and a balancing resistor 4 is embedded therein;

[0032] The two ends of the balancing resistor 4 each have a lead wire 6 connected to the positive electrode tab 2 and the negative electrode tab 3 respectively;

[0033] Each lead wire 6 is located in a lead wire embedding groove;

[0034] The top of the cover plate 1 is covered with a sealing gasket 5;

[0035] The lead embedding groove and the balancing resistor accommodating groove are both located directly below the sealing pad 5 .

[0036] In the present invention, in a specific implementation, a positive electrode tab through hole and a negative electrode tab through hole are reserved on the sealing gasket 5;

[0037] The positive electrode tab 2 passes through the positive electrode tab through hole and protrudes upward;

[0038] The negative electrode tab 3 passes through the negative electrode tab through hole and protrudes upward.

[0039] In the present invention, in a specific implementation, the sealing gasket 5 is bonded to the top of the cover plate 1 .

[0040] It should be noted that, in the present invention, an insulating sealing gasket 5 is bonded to the top of the cover plate 1 to seal the supercapacitor after assembly.

[0041] In the present invention, in specific implementation, the balancing resistor 4 and the two leads 6 are integrally formed, that is, the two leads 6 are integral with the balancing resistor 4 itself, and the leads are components of the balancing resistor, and the leads are specifically located at both ends of the main part of the balancing resistor (that is, the resistor body).

[0042] In the present invention, in a specific implementation, the lead wire 6 can be a copper wire or a CP wire (tinned copper clad steel wire).

[0043] In the present invention, in a specific implementation, two lead wires 6 are riveted to the positive electrode tab 2 and the negative electrode tab 3 respectively.

[0044] It should be noted that, in the present invention, the balancing resistor is located in the cover plate 1, and there is no welding process required for the balancing resistor in the prior art. Therefore, there is no welding problem such as poor welding.

[0045] In a specific implementation, the positive electrode tab 2 and the negative electrode tab 3 are riveted to the positive electrode post 20 and the negative electrode post 30 respectively.

[0046] The positive electrode column 20 and the negative electrode column 30 each vertically penetrate through a through hole reserved on the cover plate 1;

[0047] The outer sides of the lower parts of the positive electrode column 20 and the negative electrode column 30 are respectively covered with a first annular gasket 41 and a second gasket 42;

[0048] The first gasket 41 and the second gasket 42 are located directly below the cover plate 1;

[0049] The ends of the two leads 6 are respectively fixed between the first gasket 41 and the bottom surface of the cover 1 and between the second gasket 42 and the bottom surface of the cover 1 (i.e., the leads and gaskets can be clamped and fixed to the bottom of the cover by the extrusion force formed by riveting the poles).

[0050] In a specific implementation, the positive electrode tab 2 and the positive electrode post 20 can be integrally formed, and the negative electrode tab 3 and the negative electrode post 30 can be integrally formed.

[0051] In the present invention, in a specific implementation, the shape and size of the balancing resistor accommodating groove correspond to and match the shape and size of the balancing resistor 4 .

[0052] In the present invention, in a specific implementation, two leads are embedded in the grooves, respectively located at two ends of the balancing resistor accommodating groove, and are connected (directly connected) to the two ends of the balancing resistor accommodating groove.

[0053] In the present invention, in a specific implementation, the balancing resistor 4 is bonded to the balancing resistor accommodation groove (specifically the inner side wall);

[0054] The lead wire 6 is bonded to the lead wire embedding groove (specifically, the inner side wall).

[0055] In the present invention, in a specific implementation, the shape of the lead embedding groove is an arc shape, preferably a circular arc shape.

[0056] In the present invention, in a specific implementation, the balancing resistor 4 is located between the positive electrode tab 2 and the negative electrode tab 3 .

[0057] In the present utility model, in specific implementation, the overall shape of the cover plate 1 is circular.

[0058] Based on the supercapacitor upper cover provided by the above-mentioned utility model, due to the built-in balancing resistor, the supercapacitor module can be assembled after the supercapacitor is assembled, and the part of the external balancing circuit in the module is omitted. In addition, due to the application of the utility model, the balancing resistor (i.e., the balancing resistor) is compounded with the supercapacitor, saving the space of the supercapacitor module. Since there is no need to weld the balancing resistor, the problems of wrong welding and missing welding caused by the need to weld an external balancing resistor in the supercapacitor module of the prior art are effectively avoided.

[0059] Based on the supercapacitor upper cover provided by the utility model, the utility model further provides a supercapacitor, which includes the supercapacitor upper cover as described above.

[0060] In a specific implementation, the positive electrode sheet and the negative electrode sheet in the supercapacitor are connected to the lower end of the positive electrode tab 2 and the lower end of the negative electrode tab 3 respectively.

[0061] It should be noted that the overall shape of the supercapacitor is cylindrical, and its upper cover is sealed on the top opening of the capacitor housing. The supercapacitor includes a positive electrode sheet, a negative electrode sheet, and a diaphragm between the two electrode sheets. The electrolyte fills the pores separated by the two electrode sheets and the diaphragm. The overall structural layout and working principle of the supercapacitor are well-known structures with mature prior art, and will not be repeated here. The utility model only makes technical innovations and improvements to the upper cover of the supercapacitor.

[0062] Figure 6 A circuit schematic diagram of an embodiment of a supercapacitor module provided by the utility model. Based on the supercapacitor provided by the utility model, the utility model also provides a supercapacitor module, including a plurality of supercapacitors as described above connected in series;

[0063] Each supercapacitor is connected in parallel with a balancing resistor.

[0064] In the present invention, in a specific implementation, the capacities of the multiple supercapacitors are equal.

[0065] The resistance values ​​of the multiple balancing resistors are equal.

[0066] In the present utility model, the specific implementation is as follows: Figure 6 As shown, the supercapacitor module includes a positive terminal A, a negative terminal B and supercapacitors C1 to C3;

[0067] The positive terminal A is connected to the negative terminal B through supercapacitors C1, C2 and C3 in sequence (conductive connection);

[0068] Supercapacitors C1 to C3 are connected in series;

[0069] Supercapacitors C1-C3 are connected in parallel with resistors R1-R3 respectively.

[0070] It should be noted that the supercapacitors C1 to C3 all have the structure of the supercapacitors described above. Figures 1 to 5 The supercapacitor cover is shown.

[0071] In specific implementation, the capacity of supercapacitors C1 to C3 is 100F (farad);

[0072] The resistance values ​​of resistors R1 to R3 are all 200Ω (ohms).

[0073] Anything not described in the present invention is applicable to the prior art.

[0074] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A supercapacitor cover, characterized in that: It comprises a cover plate (1), a positive electrode tab (2), a negative electrode tab (3), a balancing resistor (4) and a sealing gasket (5); The horizontally distributed cover plate (1) is provided with positive electrode tabs (2) and negative electrode tabs (3) which are distributed at intervals, and a balancing resistor accommodating groove which is concave downwards; The balancing resistor is accommodated in the groove, and a balancing resistor (4) is embedded therein; Two ends of the balancing resistor (4) are provided with a lead wire (6) respectively connected to the positive electrode tab (2) and the negative electrode tab (3); Each lead wire (6) is located in a lead wire embedding groove; The top of the cover plate (1) is covered with a sealing gasket (5); The lead embedding groove and the balancing resistor accommodating groove are both located directly below the sealing pad (5).

2. The supercapacitor cover according to claim 1, characterized in that: The sealing gasket (5) is provided with a positive electrode tab through hole and a negative electrode tab through hole; The positive electrode tab (2) passes through the positive electrode tab through-hole and protrudes upward; The negative electrode tab (3) protrudes upward after passing through the negative electrode tab passing hole.

3. The supercapacitor cover according to claim 1, characterized in that: The sealing gasket (5) is bonded to the top of the cover plate (1); A balancing resistor (4) is bonded to the balancing resistor receiving groove; The lead wire (6) is bonded to the lead wire embedding groove.

4. The supercapacitor cover according to claim 1, characterized in that: The shape and size of the balancing resistor accommodating groove correspond to and match the shape and size of the balancing resistor (4); The two leads are embedded in the grooves, respectively located at two ends of the balancing resistor accommodating groove, and are connected with the two ends of the balancing resistor accommodating groove.

5. The supercapacitor cover according to claim 1, characterized in that: The shape of the lead wire embedding groove is arc-shaped.

6. The supercapacitor cover according to any one of claims 1 to 5, characterized in that: The balancing resistor (4) is located between the positive electrode tab (2) and the negative electrode tab (3).

7. A supercapacitor, characterized in that: The invention comprises a supercapacitor upper cover as claimed in any one of claims 1 to 6.

8. A supercapacitor module, characterized in that: comprising a plurality of supercapacitors as claimed in claim 7 connected in series; Each supercapacitor is connected in parallel with a balancing resistor.

9. The supercapacitor module according to claim 8, characterized in that: The capacities of the multiple supercapacitors are equal; The resistance values ​​of the multiple balancing resistors are equal.

10. The supercapacitor module according to claim 8, characterized in that: The supercapacitor module comprises a positive terminal A, a negative terminal B and supercapacitors C1-C3; The positive terminal A is connected to the negative terminal B through supercapacitors C1, C2 and C3 in sequence; Supercapacitors C1~C3 are connected in series; Supercapacitors C1-C3 are connected in parallel with resistors R1-R3 respectively.

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