Pre-pressed battery cover and button battery

Abstract

The present invention relates to a pre-stressed battery cover and a button battery with the pre-stressed battery cover. The pre-stressed battery cover comprises: a shell cover, a cathode and cathode connector assembly, and a bottom bracket; wherein the cathode and cathode connector assembly comprises a first end and a second end arranged along the axial direction; one end face of the first end has two bosses, and the other end face is connected to the bottom bracket; the shell cover has two through holes matched with the bosses, and the bosses can pass through the through holes; the shell cover and the bottom bracket are respectively connected at both ends of the first end to seal the first end between the shell cover and the bottom bracket.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a pre-compressed battery cover and a button battery. Background Art

[0002] At present, button batteries are used in many scenarios and are filled with electrolyte. Therefore, leakage prevention is very important. Most of the current means are welding and sealing. At the same time, in order to facilitate the connection and installation with products such as headphones, the upper and lower shells are designed to be connected to the positive and negative poles respectively. The distance between the positive and negative poles is relatively close. In the automated production process, short circuits are easily caused by mutual contact between the batteries, affecting the battery performance. In a salt spray environment, it is also easy for the positive and negative poles of the battery to be bridged and fail due to the small distance between the positive and negative poles. Summary of the invention

[0003] The present invention proposes a pre-pressed battery cover and a button battery, which guide the positive and negative polarities through the cover, prevent the shell from being charged, and effectively avoid the risk of battery short circuit, so as to solve the above-mentioned technical problems.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A pre-pressed battery cover, comprising:

[0006] Shell cover, cathode and anode connector assembly, bottom bracket;

[0007] Wherein, the anode and cathode connector assembly comprises a first end portion and a second end portion arranged along the axial direction;

[0008] One end surface of the first end portion has two bosses, and the other end surface is connected to the base;

[0009] The shell cover has two through holes matched with the bosses, and the bosses can pass through the through holes;

[0010] The shell cover and the base are connected at two ends of the first end portion respectively, so as to seal the first end portion between the shell cover and the base.

[0011] Further, the shell cover has an inner recess at one end that matches the first end;

[0012] The first end portion is received in the inner recess.

[0013] Furthermore, the boss is a copper rivet.

[0014] Furthermore, the shell cover and the base are connected by welding, riveting or bonding.

[0015] A button battery, comprising the pre-pressed battery cover, and further comprising:

[0016] Shell, battery cell;

[0017] Wherein, the battery cell is arranged between the first end and the second end;

[0018] The battery cell has a pair of tabs at one end close to the second end, and the tabs are folded to one end of the second end away from the battery cell and connected to the second end;

[0019] The anode and cathode connector components are accommodated in the shell and cooperate with the shell cover for sealing.

[0020] Furthermore, an insulating structure is provided between the battery cell and the base, and between the battery cell and the bottom of the shell.

[0021] Further, the battery core is a winding core;

[0022] The first end and the second end are formed by winding a conductor, and the winding direction is consistent with the winding direction of the battery cell.

[0023] The beneficial effects of the present invention are:

[0024] The anode and cathode connector components are pre-pressed and sealed between the fixed component and the shell cover, and then the fixed component and the shell cover are welded for secondary sealing, which improves the sealing performance of the battery cover, improves battery safety and reduces the risk of leakage. For batteries assembled with this cover, the anode and cathode polarities of the battery cell can be guided to the boss along the anode and cathode connector components, and the charged boss can directly pass through the two matching through holes on the shell cover, so that the battery shell will not be charged, effectively avoiding the risk of battery short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the face cover;

[0026] Figure 2 This is a structural diagram of the face cover from another angle;

[0027] Figure 3 This is the exploded structure diagram of the face cover;

[0028] Figure 4 This is an exploded structural diagram from another angle of the face cover;

[0029] Figure 5 This is a structural diagram of a button battery;

[0030] Figure 6 It is a side view of a button-type battery after the shell is separated;

[0031] Figure 7 This is the detail picture of point A;

[0032] Figure 8 This is the exploded structure diagram of a button battery;

[0033] Fig. 9 This is an exploded structure diagram of a button battery from another angle.

[0034] 1. Shell cover; 2. Anode and cathode connector assembly; 3. Bottom bracket; 4. Boss; 5. Shell; 6. Battery cell; 11. Through hole; 12. Inner recess; 21. First end; 22. Second end; 61. Pole ear; 7. Insulation structure. DETAILED DESCRIPTION

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0038] like Figure 1-9 As shown, a pre-pressed battery cover comprises:

[0039] Shell cover 1, cathode and anode connector assembly 2, bottom bracket 3;

[0040] The cathode and anode connector assembly 2 includes a first end portion 21 and a second end portion 22 arranged along the axial direction;

[0041] One end surface of the first end portion 21 has two bosses 4, and the other end surface is connected to the base 3;

[0042] The shell cover 1 has two through holes 11 adapted to the boss 4, and the boss 4 can pass through the through holes 11;

[0043] The shell cover 1 and the base 3 are connected at both ends of the first end 21 , respectively, so that the first end 21 is sealed between the shell cover 1 and the base 3 .

[0044] Specifically, the boss 4 on the first end 21 can lead out the electrical polarity, the first end 21 can be pre-pressed and packaged between the shell cover 1 and the base 3, and the boss 4 can pass through the through hole 11. The cathode and anode connector assembly 2 is a conductor with an insulating layer on the surface, and electricity can be guided to the boss 4.

[0045] Optionally, the shell cover 1 has an inner recess 12 at one end that matches the first end 21;

[0046] The first end 21 is received in the inner recess 12 .

[0047] The inner recess 12 can stably position the first end 21 between the housing cover 1 and the base 3 .

[0048] Optionally, the boss 4 is a copper rivet, which has stable electrical conductivity.

[0049] Optionally, the shell cover 1 and the base 3 are connected by welding, riveting or bonding.

[0050] Sealing connection methods can be welding, riveting and bonding, among which welding can be fusion welding, pressure welding and brazing, etc.

[0051] A button battery, comprising a pre-pressed battery cover, and further comprising:

[0052] Shell 5, battery cell 6;

[0053] The battery cell 6 is disposed between the first end 21 and the second end 22;

[0054] The battery cell 6 has a pair of tabs 61 at one end close to the second end 22 , and the tabs 61 are folded to the end of the second end 22 away from the battery cell 6 and connected to the second end 22 ;

[0055] The tab 61 is connected to the second end portion 22 and conducts electricity to the boss 4 of the first end portion 21 .

[0056] Optionally, the anode and cathode connector assembly 2 is accommodated inside the shell 5 and cooperates with the shell cover 1 for sealing.

[0057] An insulating structure 7 is provided between the battery core 6 and the base 3 , and between the battery core 6 and the bottom of the shell 5 .

[0058] The insulating structure 7 can guide the electrical properties of the battery cell 6 only from the tab 61 through the anode and cathode connector assembly 2 to the boss 4, making the shell cover 1 and the shell 5 uncharged, effectively avoiding the risk of battery short circuit. It should be noted that the insulating structure 7 can be an insulating sheet or a bonding material coated at the corresponding position.

[0059] It should be noted that the shell cover 1 and the bottom bracket 3 are made of a formable metal or non-metal material. In some embodiments, the shell cover 1 and the bottom bracket 3 are made of a conductive metal, and the specific conductive metal can be made of a corrosion-resistant conductive metal, such as stainless steel, or can be made of plastic sprayed with a conductive metal. The shell cover 1 and the bottom bracket 3 of the plastic sprayed with a conductive metal can reduce the weight of the battery, reduce the weight of the earphone product, and thus reduce the weight of the human ear.

[0060] Optionally, the battery cell 6 is a coiled core;

[0061] The first end 21 and the second end 22 are formed by winding a conductor, and the winding direction is consistent with the winding direction of the battery cell 6. The cathode and anode connector assembly 2 can be stacked parallel to the end face or diameter direction of the winding core by winding a conductor, and the winding direction of the pole piece is kept consistent, so as to effectively balance the magnetic field of the winding body, minimize the magnetic field generated by the battery, remove the interference of the magnetic field on the host, and avoid the generation of radiation and background noise. The best way is to use sheet FPC coil stacking to minimize the space occupancy.

[0062] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A button battery, characterized in that: include: A pre-pressed battery cover, the pre-pressed battery cover comprising: Shell cover (1), cathode and anode connector assembly (2), and base support (3); Wherein, the anode-cathode connector assembly (2) comprises a first end portion (21) and a second end portion (22) arranged along the axial direction; One end surface of the first end portion (21) has two bosses (4), and the other end surface is connected to the base (3); The shell cover (1) has two through holes (11) adapted to the bosses (4), and the bosses (4) can pass through the through holes (11); The shell cover (1) and the base (3) are respectively connected at two ends of the first end (21) so that the first end (21) is sealed between the shell cover (1) and the base (3); Also includes: Casing (5), battery cell (6); Wherein, the battery cell (6) is arranged between the first end (21) and the second end (22); The battery cell (6) has a pair of pole ears (61) at one end close to the second end (22); the pole ears (61) are folded to an end of the second end (22) away from the battery cell (6) and connected to the second end (22); the pole ears (61) are connected to the second end (22) and conduct electricity to the boss (4) of the first end (21); The anode and cathode connector assembly (2) is accommodated inside the housing (5) and cooperates with the housing cover (1) for sealing.

2. A button battery according to claim 1, characterized in that: The shell cover (1) has an inner recess (12) at one end that matches the first end (21); The first end portion (21) is accommodated in the inner recess (12).

3. A button battery according to claim 1, characterized in that: The boss (4) is a copper rivet.

4. A button battery according to claim 1, characterized in that: The shell cover (1) and the base (3) are connected by welding, riveting or bonding.

5. The button battery according to claim 1, characterized in that: An insulating structure (7) is provided between the battery core (6) and the base (3), and between the battery core (6) and the bottom of the shell (5).

6. A button battery according to claim 1, characterized in that: The battery core (6) is a winding core; The first end (21) and the second end (22) are formed by winding a conductor, and the winding direction is consistent with the winding direction of the battery core (6).

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