Capacitor battery

Abstract

The utility model discloses a capacitor battery which comprises a shell, a battery cell, an insulating cover and an electrode leading-out assembly, the electrode leading-out assembly comprises a circuit board connected with the battery cell, and further comprises a first electrode cap arranged on the insulating cover; the first electrode cap comprises a cap body and a plurality of connecting arms, the insulating cover is provided with penetrating holes for the connecting arms to penetrate through, and at least one connecting arm inclines from the position connected with the edge of the cap body to the direction away from the center axis of the cap body. According to the utility model, the at least one connecting arm is arranged to incline from the position connected with the edge of the cap body to the direction far away from the central axis of the cap body, so that after the inclined connecting arm passes through the through hole, the inclined part interferes with the hole wall of the through hole; therefore, the interference force can prevent the first electrode cap and the insulating cover from shifting and shaking, so that the connection stability of the insulating cover and the first electrode cap is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a capacitor battery. Background Art

[0002] Capacitor batteries are known as "supercapacitors" and have a capacity of Farad level in a very small volume, no special charging circuit and controlled discharge circuit are required, and overcharging and overdischarging do not have a negative impact on their lifespan. Therefore, capacitor batteries are becoming more and more popular in the market. Capacitor batteries include a shell, a battery cell arranged in the shell, a circuit board electrically connected to the positive and negative electrodes of the battery cell, and a cap for closing the shell opening. In this structure, the shell is connected to the negative electrode of the battery cell as a negative output terminal, and the positive electrode of the battery cell is connected to the positive cap arranged on the cap so that the positive cap serves as the positive output terminal of the battery. The existing positive cap is usually provided with a connecting arm passing through a through hole of the cap, and the connecting arm is connected to the circuit board after passing through the through hole. However, in the related art, the end face of the connecting arm connected to the cap is perpendicular, so that the connection between the two is prone to shaking after the connecting arm passes through the through hole, thereby making the connection between the positive cap and the cap unstable. Utility Model Content

[0003] The utility model provides a capacitor battery to solve the technical problems raised in the background technology.

[0004] The utility model provides a capacitor battery, comprising a shell provided with a accommodating cavity and having an opening at one end, a battery cell accommodated in the accommodating cavity, an insulating cover for closing the opening, and an electrode lead-out assembly connected to the battery cell; the electrode lead-out assembly comprises a circuit board arranged on the end surface of the battery cell close to the insulating cover and connected to the first electrode and the second electrode of the battery cell, the electrode lead-out assembly also comprises a first electrode cap installed on the insulating cover and electrically connected to the first electrode of the battery cell; the first electrode cap comprises a cap body, a plurality of connecting arms extending from the edge of the cap body toward the accommodating cavity, the insulating cover is provided with through holes corresponding to the number of the connecting arms for the connecting arms to pass through, and at least one of the connecting arms is inclined from a position connected to the edge of the cap body toward a direction away from the central axis of the cap body.

[0005] Furthermore, the connecting arm that is inclined from the position connected to the edge of the cap body in a direction away from the central axis of the cap body is defined as a welding arm; a connector is provided at the end of the welding arm; the circuit board is provided with a connector slot that cooperates with the connector, and the connector is inserted into the connector slot and is welded to the circuit board.

[0006] Furthermore, the insulating cover is provided with a receiving groove for receiving the cap body; and the through hole is provided at the bottom of the receiving groove.

[0007] Furthermore, a protruding terminal protruding away from the shell body is also provided in the middle of the cap body; and a boss cooperating with the protruding terminal is provided at the bottom of the accommodating groove.

[0008] Furthermore, a welding groove recessed toward the housing is provided in the middle of the protruding terminal.

[0009] Furthermore, the electrode lead-out assembly also includes an electrode connector electrically connected to the circuit board, and the insulating cover is provided with an exposure hole for exposing the electrode connector, and one end of the electrode connector is connected to the circuit board and the other end is exposed on the insulating cover through the exposure hole.

[0010] Furthermore, the insulating cover is provided with a plurality of positioning posts arranged at intervals, the circuit board is provided with positioning holes cooperating with the positioning posts, and the insulating cover is further provided with an abutment member for abutting against the circuit board to prevent the circuit board from shifting.

[0011] Furthermore, the electrode lead-out assembly also includes a second electrode spring sheet, one end of which is connected to the circuit board and the other end of which is elastically abutted against the shell.

[0012] Furthermore, a heat insulation film is provided between the battery core and the shell.

[0013] Furthermore, an insulating film is provided on the outside of the shell, and the middle position of the bottom of the accommodating cavity protrudes away from the insulating cover so that the bottom of the shell has a second electrode connecting protrusion, and the insulating film has a protruding hole for the second electrode connecting protrusion to protrude.

[0014] Furthermore, a protective EVA component is provided in the shell, and there are multiple battery cells, which are arranged on the protective EVA component.

[0015] The beneficial effect of the utility model is that the utility model sets at least one of the connecting arms to be inclined from the position connected to the edge of the cap body toward a direction away from the central axis of the cap body, so that after the inclined connecting arm passes through the through hole, the inclined portion will interfere with the hole wall of the through hole, so that the interference force can prevent the first electrode cap and the insulating cover from shifting and shaking, thereby improving the connection stability between the insulating cover and the first electrode cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded diagram of the capacitor battery of the utility model.

[0017] Figure 2 It is a three-dimensional diagram of the first electrode cap of the capacitor battery of the utility model.

[0018] Figure 3 It is a three-dimensional diagram of the insulating cover of the capacitor battery of the utility model.

[0019] Figure 4 Another stereoscopic view of the insulating cover of the capacitor battery of the present invention.

[0020] Figure 5 The utility model is a connection diagram of the circuit board, the electrode connector and the second electrode spring.

[0021] Figure 6 It is a three-dimensional diagram of the second electrode spring of the utility model.

[0022] Figure 7 It is a three-dimensional diagram of the shell of the utility model.

[0023] Figure 8 It is a three-dimensional diagram of the insulating film of the utility model.

[0024] Fig. 9 It is a three-dimensional diagram of the battery core of the utility model. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] The following is a specific implementation method combined with the attached Figure 1-9 The utility model is described in further detail.

[0027] The utility model provides a capacitor battery, comprising a shell 1 provided with a housing cavity and having an opening at one end, a battery cell 3 accommodated in the housing cavity, an insulating cover 2 for closing the opening, and an electrode lead-out assembly connected to the battery cell 3; the electrode lead-out assembly comprises a circuit board 4 arranged on the end surface of the battery cell 3 close to the insulating cover 2 and connected to a first electrode 31 and a second electrode 32 of the battery cell 3, the electrode lead-out assembly also comprises a first electrode cap 5 installed on the insulating cover 2 and electrically connected to the first electrode 31 of the battery cell 3; the first electrode cap 5 comprises a cap body 51, and a plurality of connecting arms 52 extending from the edge of the cap body 51 toward the housing cavity, the insulating cover 2 is provided with through holes 23 corresponding to the number of the connecting arms 52 for the connecting arms 52 to pass through, and at least one of the connecting arms 52 is inclined from a position connected to the edge of the cap body 51 toward a direction away from the central axis of the cap body 51.

[0028] In the present embodiment, by setting at least one of the connecting arms 52 to be inclined from the position connected to the edge of the cap body 51 toward a direction away from the central axis of the cap body 51, after the inclined connecting arm 52 passes through the through hole 23, the inclined portion will interfere with the hole wall of the through hole 23, so that the interference force can prevent the first electrode cap 5 and the insulating cover 2 from shifting and shaking, thereby improving the connection stability between the insulating cover 2 and the first electrode cap 5.

[0029] In a specific embodiment, the insulating cover 2 includes a cover body 25 and an insertion portion 26 extending from the cover body 25 to the inside of the shell 1, the insertion portion 26 is coaxially arranged with the body and the outer diameter of the insertion portion 26 is smaller than the outer diameter of the cover body 25, the outer diameter of the insertion portion 26 is equal to or smaller than the inner diameter of the shell 1, and the outer diameter of the cover body 25 is greater than or equal to the outer diameter of the shell 1, so that abutment surface 27 for abutting against the open end surface of the shell 1 is formed between the insertion portion 26 and the cover body 25, thereby facilitating the assembly of the insulating cover 2, and the insulating cover 2 is made of fire-proof ABS material.

[0030] In a specific embodiment, the shell 1 is a steel shell, and the thickness of the shell 1 is 0.5 mm, so as to effectively suppress the explosion of the battery.

[0031] In an optional embodiment, the first electrode 31 is the positive electrode of the battery cell 3 , and the second electrode 32 is the negative electrode of the battery cell 3 , or the first electrode 31 is the negative electrode of the battery cell 3 , and the second electrode 32 is the positive electrode of the battery cell 3 .

[0032] In a specific embodiment, the connecting arm 52 inclined from the position connected to the edge of the cap body 51 in the direction away from the central axis of the cap body 51 is defined as a welding arm 53; a connector 56 is provided at the end of the welding arm 53; the circuit board 4 is provided with a plug-in slot 43 cooperating with the connector 56, the connector is inserted into the plug-in slot 43 and welded to the circuit board 4, and the first electrode cap 5 and the circuit board 4 are quickly pre-positioned through the plug-in cooperation between the connector 56 and the plug-in slot 43, so that the connector 56 and the plug-in slot 43 can be welded and fixed, and the electrical connection between the two can be achieved, so that the first electrode cap 5 is connected to the first electrode 31 of the battery cell 3 through the circuit board 4.

[0033] In a specific embodiment, the connector 56 is perpendicular to the plane where the circuit board 4 is located, that is, the connector 56 is perpendicular to the insertion slot 43, so that the connector 56 is easily inserted into the insertion slot 43 and the difficulty of assembly is reduced.

[0034] In a specific embodiment, the insulating cover 2 is provided with a receiving groove 22 for receiving the cap body 51; the through hole 23 is opened at the bottom of the receiving groove 22, and by providing the receiving groove 22, the matching positioning with the cap body 51 can be achieved, thereby reducing the difficulty of assembly.

[0035] In a specific embodiment, a protruding terminal 54 protruding away from the shell 1 is further provided in the middle of the cap body 51; a boss 24 cooperating with the protruding terminal 54 is provided at the bottom of the accommodating groove 22. By providing the protruding terminal 54 in the middle of the cap body 51, it is convenient to electrically connect with electrical equipment. The boss 24 cooperating with the protruding terminal 54 is provided at the bottom of the accommodating groove 22, so as to provide support for the protruding terminal 54, thereby preventing the protruding terminal 54 from collapsing under the action of external force, thereby affecting the connection stability with the external equipment.

[0036] In a specific embodiment, a welding groove 55 is provided in the middle of the protruding terminal 54 and is recessed toward the housing 1 , so that it can cooperate with a connecting protrusion of an external device and improve the connection stability with the external device.

[0037] In a specific embodiment, the electrode lead-out assembly also includes an electrode connector 6 electrically connected to the circuit board 4, and the insulating cover 2 is provided with an exposure hole 28 for exposing the electrode connector 6. One end of the electrode connector 6 is connected to the circuit board 4 and the other end is exposed on the insulating cover 2 through the exposure hole 28. One end of the electrode connector 6 is connected to the circuit board 4 and the other end is exposed on the insulating cover 2 through the exposure hole 28. In this embodiment, the capacitor battery can be charged or the external device can be discharged through the connector. By providing the exposure hole 28 on the insulating cover 2, the electrode connector 6 can be connected to an external charging interface or an external device. The exposure hole 28 is waist-shaped and matches the circumferential contour of the electrode connector 6, so as to prevent the electrode connector 6 from loosening. A glue layer is provided between the electrode connector 6 and the through hole 23 to achieve sealing between the electrode connector 6 and the through hole 23. The electrode connector 6 is a TYPE-C female socket connector.

[0038] In a specific implementation, the insulating cover 2 is provided with a plurality of positioning posts 29 arranged at intervals, and the circuit board 4 is provided with positioning holes 44 that cooperate with the positioning posts 29. The insulating cover 2 is also provided with an abutment 21 for abutting against the circuit board 4 to prevent the circuit board 4 from shifting. In this embodiment, the positioning posts 29 are plugged into the positioning holes 44 to prevent the circuit board 4 from shifting in the radial direction, thereby affecting the stability of the connection between the circuit board 4 and the first electrode 31, the second electrode 32 of the battery cell 3 and the first electrode cap 5. The abutment 21 can be in the After the positioning post 29 is inserted into the positioning hole 44, it abuts against the circuit board 4, thereby preventing the circuit board 4 from moving in the axial direction, thereby avoiding affecting the stability of the connection between the circuit board 4 and the first electrode 31, the second electrode 32 of the battery cell 3 and the first electrode cap 5. In this embodiment, the positioning post 29 is connected to the abutment 21, and the extension length of the positioning post 29 away from the insulating cap is greater than the extension length of the abutment 21 away from the insulating cap, so that the abutment 21 can abut against the circuit board 4 after the positioning post 29 is inserted into the positioning hole 44.

[0039] Furthermore, a heat dissipation cavity 251 is provided on a side of the insulating cover 2 facing the circuit board 4. After the abutment member 21 abuts against the circuit board 4, a heat dissipation space is formed between the circuit board 4 and the heat dissipation cavity 251, thereby providing a certain gas accumulation space after thermal runaway occurs in the capacitor battery, thereby reducing the possibility of explosion.

[0040] In a specific embodiment, the electrode lead-out assembly further includes a second electrode spring 7, one end of the second electrode spring 7 is connected to the circuit board 4 and the other end is elastically abutted against the housing 1. Specifically, the second motor spring includes an electric board connecting portion 71 connected to the circuit board 4 and an elastic portion 72 connected to the electric board connecting portion 71. The circuit board 4 is provided with a notch 45 for accommodating the electric board connecting portion 71. The electric board connecting portion 71 is provided with a snap-fitting cavity 711 adapted to the thickness of the circuit board 4. The snap-fitting cavity 711 is snap-fitted to the circuit board 4. By providing the engaging cavity 711, the second electrode spring piece 7 can be stably connected to the circuit board 4 after being engaged with the circuit board 4 and welded, and the elastic portion 72 is displaced when it is placed in contact with the shell 1. The elastic portion 72 includes an extension section 721 connected to the electric board connecting portion 71, an arc section 722 connected to the extension section, and an abutting section 723 abutting against the arc section 722. The abutting section 723 is cut obliquely in a direction away from the extension section 721 to elastically abut against the shell 1.

[0041] In a specific embodiment, a thermal insulation film 8 is provided between the battery core 3 and the housing 1 , and the thermal insulation film 88 is a graphene thermal insulation film 8 , thereby being able to play a role in heat insulation and heat dissipation.

[0042] In a specific embodiment, an insulating film 9 is provided on the outside of the shell 1, and the middle position of the bottom of the accommodating cavity protrudes away from the insulating cover 2 so that the bottom of the shell 1 has a second electrode connecting protrusion 1111, and the insulating film 9 has a protrusion hole 91 for the second electrode connecting protrusion 1111 to protrude. The insulating film 9 has a protrusion hole 91 for the second electrode connecting protrusion 1111 to protrude, and the second electrode connecting protrusion 1111 is the other pole of the capacitor battery. The insulating film 9 can prevent the periphery of the shell 1 from contacting with external equipment and causing a short circuit. The second electrode connecting protrusion 1111 can be connected to the external equipment from the protruding hole.

[0043] In a specific embodiment, a protective EVA component is further provided in the shell 1, and there are multiple battery cells 3. The multiple battery cells 3 are arranged on the protective EVA component. By arranging the battery cells 3 on the EVA fireproof component 10, it can not only play a shock-proof role for the battery cells 3, but also reduce the possibility of explosion after thermal runaway.

[0044] In a specific embodiment, the circuit board 4 is provided with a first through-hole 41 for the first electrode 31 of the battery cell 3 to pass through, the first electrode 31 passes through the first through-hole 41 and is welded to the circuit board 44, and / or the circuit board 4 is provided with a second through-hole 42 for the second electrode 32 of the battery cell 3 to pass through, the second electrode 32 passes through the second through-hole 42 and is welded to the circuit board 4. The battery cell 3 and the circuit board 4 can be quickly positioned through the first through-hole 41 and the second through-hole 42, and the connection stability between the circuit board 4 and the first electrode 31 and the second electrode 32 of the battery cell 3 can be improved after welding. When there are multiple battery cells 3, there are multiple corresponding first through-holes 41 and second through-holes 42.

Claims

1. A capacitor battery, characterized in that: It includes a shell with a accommodating cavity and an opening at one end, a battery cell accommodated in the accommodating cavity, an insulating cover for closing the opening, and an electrode lead-out assembly connected to the battery cell; the electrode lead-out assembly includes a circuit board arranged on the end surface of the battery cell close to the insulating cover and connected to the first electrode and the second electrode of the battery cell, and the electrode lead-out assembly also includes a first electrode cap installed on the insulating cover and electrically connected to the first electrode of the battery cell; the first electrode cap includes a cap body and a plurality of connecting arms extending from the edge of the cap body toward the accommodating cavity, the insulating cover is provided with a number of through holes corresponding to the number of the connecting arms for the connecting arms to pass through, and at least one of the connecting arms is inclined from the position connected to the edge of the cap body in a direction away from the central axis of the cap body.

2. The capacitor battery according to claim 1, characterized in that: The connecting arm that is inclined from the position connected to the edge of the cap body toward the direction away from the central axis of the cap body is defined as a welding arm; a connector is provided at the end of the welding arm; the circuit board is provided with a connector slot that cooperates with the connector, and the connector is inserted into the connector slot and is welded to the circuit board.

3. The capacitor battery according to claim 2, characterized in that: The insulating cover is provided with a receiving groove for receiving the cap body; the through hole is arranged at the bottom of the receiving groove.

4. The capacitor battery according to claim 3, characterized in that: A protruding terminal protruding away from the shell body is also provided in the middle of the cap body; a boss cooperating with the protruding terminal is provided at the bottom of the accommodating groove.

5. The capacitor battery according to claim 4, characterized in that: A welding groove recessed toward the housing is provided in the middle of the protruding terminal.

6. The capacitor battery according to any one of claims 1 to 5, characterized in that: The electrode lead-out assembly also includes an electrode connector electrically connected to the circuit board. The insulating cover is provided with an exposure hole for exposing the electrode connector. One end of the electrode connector is connected to the circuit board and the other end is exposed on the insulating cover through the exposure hole.

7. The capacitor battery according to any one of claims 1 to 5, characterized in that: The insulating cover is provided with a plurality of positioning posts arranged at intervals, the circuit board is provided with positioning holes matched with the positioning posts, and the insulating cover is further provided with abutting members for abutting against the circuit board to prevent the circuit board from shifting.

8. The capacitor battery according to any one of claims 1 to 5, characterized in that: The electrode lead-out assembly further includes a second electrode spring sheet, one end of which is connected to the circuit board and the other end of which is elastically abutted against the shell.

9. The capacitor battery according to any one of claims 1 to 5, characterized in that: A heat insulation film is provided between the battery cell and the shell; an insulating film is provided outside the shell, the middle part of the bottom of the accommodating cavity protrudes away from the insulating cover so that the bottom of the shell has a second electrode connecting protrusion, and the insulating film has a protruding hole for the second electrode connecting protrusion to protrude.

10. The capacitor battery according to any one of claims 1 to 5, characterized in that: A protective EVA component is also provided in the shell, and there are multiple battery cells, which are arranged on the protective EVA component.

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