Overcurrent protection device, energy storage battery and electric equipment

Abstract

The utility model relates to the field of battery structures, and discloses an overcurrent protection device, an energy storage battery and electric equipment, which comprises a circuit board, a fuse mounting bracket, a conduction connecting sheet and a fuse module, the fuse mounting bracket is mounted on the circuit board and is provided with two conduction connecting columns which are arranged at an interval; the two ends of the fuse module are respectively connected with the conduction connecting columns, and the conduction connecting columns are electrically connected with the circuit board through the conduction connecting sheets. The over-current protection device, the energy storage battery and the electric equipment are higher in safety performance and can bear larger over-current.

Description

Technical Field

[0001] This utility model relates to the field of battery structure, and in particular to an overcurrent protection device, an energy storage battery, and an electrical device. Background Technology

[0002] Energy storage batteries are a new type of battery technology that can store electrical energy and then release it when needed.

[0003] The energy storage battery system includes a circuit board, on which an electronic overcurrent protector is installed. The electronic overcurrent protector is a surface-mount electronic component or a semiconductor component. The electronic overcurrent protector is directly mounted on the circuit board. The overcurrent protector can withstand a relatively small overcurrent and is easy to burn out when the current is large, so it cannot meet the needs of high current overcurrent protection.

[0004] Therefore, it is necessary to design an overcurrent protection device, energy storage battery, and electrical equipment that has higher safety performance and can withstand greater overcurrent.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides an overcurrent protection device, an energy storage battery, and electrical equipment, which helps to reduce the installation volume and can withstand greater overcurrent.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An overcurrent protection device includes a circuit board, a fuse mounting bracket, a conductive connector, and a fuse module;

[0009] The fuse mounting bracket is mounted on the circuit board and has two spaced-apart conductive connecting posts; both ends of the fuse module are respectively connected to the conductive connecting posts, and the conductive connecting posts are electrically connected to the circuit board through the conductive connecting piece.

[0010] Optionally, one end of the conductive connector is connected to the conductive connector post, and the other end passes through the circuit board and is soldered to the connection pad on the circuit board.

[0011] Optionally, the overcurrent protection device further includes a first connecting copper busbar and a second connecting copper busbar;

[0012] The first connecting copper busbar is sleeved on one of the conductive connecting posts and presses against one end of the fuse module; the second connecting copper busbar is sleeved on another conductive connecting post and presses against the other end of the fuse module.

[0013] The conductive connecting post is equipped with a clamping nut for clamping the first connecting copper busbar or the second connecting copper busbar.

[0014] Optionally, the first connecting copper busbar is provided with a first connecting portion for connecting the battery pack, and the second connecting copper busbar is provided with a second connecting portion for connecting the charging and discharging interface.

[0015] Optionally, the portion of the conductive connector that passes through the circuit board is bent to form a welded portion, the welded portion being parallel to the bottom surface of the circuit board.

[0016] Optionally, the fuse mounting bracket can be detachably mounted on the circuit board by fastening screws.

[0017] Optionally, the circuit board has a through hole, the conductive connecting piece passes through the through hole through the circuit board, and the connecting pad is located on the side of the through hole away from the fuse mounting bracket.

[0018] Optionally, the conductive connecting piece forms a Z-shaped structure, with one end of the conductive connecting piece having a connecting hole for fitting onto the conductive connecting post, and the other end passing through the through hole to connect to the connecting pad.

[0019] An energy storage battery includes an overcurrent protection device as described in any of the preceding claims.

[0020] An electrical device includes an energy storage battery as described above.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This utility model provides an overcurrent protection device, energy storage battery, and electrical equipment. It features a fuse bracket mounted on a circuit board, with a conductive connecting post on the fuse mounting bracket for mounting the fuse module. One end of a conductive connecting piece is connected to the conductive connecting post, and the other end is welded to the circuit board. The fuse module, circuit board, and fuse bracket form a combined structure. The conductive connecting piece improves the connection stability between the conductive connecting post and the circuit board, enhancing the safety performance of the overcurrent protection device and enabling it to withstand larger overcurrent currents.

[0023] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an exploded schematic diagram of the overcurrent protection device provided in this embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the installation structure of the overcurrent protection device provided in this embodiment of the utility model;

[0027] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure of the overcurrent protection device;

[0028] Figure 4 yes Figure 3 Enlarged schematic diagram of the overcurrent protection device at position A.

[0029] Reference numerals: 1. Circuit board; 101. Through hole; 11. Connecting pad; 2. Fuse mounting bracket; 21. Conductive connection post; 3. Conductive connection piece; 31. Welding part; 4. Fuse module; 5. First connecting copper busbar; 51. First connection part; 6. Second connecting copper busbar; 61. Second connection part. Detailed Implementation

[0030] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0031] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0032] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0033] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0034] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0035] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0036] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0037] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0039] Example 1

[0040] In view of the deficiencies of existing overcurrent protection devices, the applicant, based on years of practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively researched and innovated in order to create a device that could overcome the deficiencies of the existing technology and make the overcurrent protection device more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value was finally created.

[0041] Please refer to Figures 1 to 3 This utility model provides an overcurrent protection device, including a circuit board 1, a fuse mounting bracket 2, a conductive connecting piece 3, and a fuse module 4. The fuse mounting bracket 2 is mounted on the circuit board 1 and has two spaced-apart conductive connecting posts 21. Both ends of the fuse module 4 are connected to the conductive connecting posts 21, and the conductive connecting posts 21 are connected to the circuit board 1 via the conductive connecting pieces 3. Each conductive connecting post 21 is connected to the circuit board via a conductive connecting piece 3, enabling the circuit board 1 to detect the magnitude of the current flowing through it. Optionally, the circuit board 1 can be used to control the output current of the battery pack to prevent excessive current flowing through the fuse module 4.

[0042] In this embodiment, a fuse bracket 2 is installed on the circuit board 1, and a conductive connecting post 21 is provided on the fuse mounting bracket 2 to connect the fuse module 4. One end of the conductive connecting piece 3 is connected to the conductive connecting post 21, and the other end is welded to the circuit board 1. This allows the fuse module 4, circuit board 1, and fuse bracket 2 to form a combined structure capable of withstanding larger overcurrents. Furthermore, the conductive connecting piece 3 improves the connection stability between the conductive connecting post 21 and the circuit board 1, effectively preventing overheating at the connection end or intermediate burnout, thus enhancing safety. In summary, the overcurrent protection device in this embodiment can withstand larger overcurrents and offers higher safety.

[0043] Optionally, one end of the conductive connecting piece 3 is connected to the conductive connecting post 21, and the other end passes through the circuit board 1 and is soldered to the connecting pad 11 on the circuit board 1. A through hole 101 is provided on the circuit board 1, through which the conductive connecting piece 3 passes, and the connecting pad 11 is located on the side of the through hole 101 away from the fuse mounting bracket 2. The through hole 101 defines the installation position of the conductive connecting piece 3. Generally, the through hole 101 is a narrow, elongated through hole, which can prevent the conductive connecting piece 3 from vibrating excessively relative to the circuit board 1 under external shaking. The installation structure of the conductive connecting piece 3 can effectively improve the installation stability and installation quality of the conductive connecting piece 3.

[0044] Optionally, the overcurrent protection device further includes a first connecting copper busbar 5 and a second connecting copper busbar 6; the first connecting copper busbar 5 is provided with a first connecting part 51 for connecting the battery pack, and the second connecting copper busbar 6 is provided with a second connecting part 61 for connecting the charging and discharging interface, so that the electrical energy stored in the battery pack can be used by the device connected to the charging and discharging interface, and of course the battery pack can also be charged through the charging and discharging interface.

[0045] The first connecting copper busbar 5 is sleeved on a conductive connecting post 21 and presses against one end of the fuse module 4; the second connecting copper busbar 6 is sleeved on another conductive connecting post 21 and presses against the other end of the fuse module 4; a clamping nut for clamping the first connecting copper busbar 5 or the second connecting copper busbar 6 is installed on the conductive connecting post 21. In this embodiment, one clamping nut clamps the first connecting copper busbar 5 so that the first connecting copper busbar 5 is in contact with the end of the conductive fuse module 4, and the other clamping nut clamps the second connecting copper busbar 6 so that the second connecting copper busbar 6 is in contact with the end of the conductive fuse module 4.

[0046] Optionally, the portion of the conductive connecting piece 3 that passes through the circuit board 1 is bent to form a welding part 31, which is parallel to the bottom surface of the circuit board 1. The welding part 31 improves subsequent welding quality and makes the connection between the welding part 31 and the circuit board 1 more reliable. Furthermore, the comb-shaped welding part 31 facilitates welding and effectively improves welding quality.

[0047] Optionally, the fuse mounting bracket 2 can be detachably mounted on the circuit board 1 by fastening screws.

[0048] Optionally, such as Figure 3 and Figure 4 The conductive connecting piece 3 forms a Z-shaped structure. One end of the conductive connecting piece 3 has a connecting hole for fitting onto the conductive connecting post 21, and the other end passes through the through hole 101 to connect to the solder pad 11. The connecting hole simplifies the installation of the conductive connecting piece 3.

[0049] In this embodiment, the overcurrent protection device is stacked on the conductive connecting post 21 between the conductive connecting piece 3, the end of the fuse module 4, and the first connecting copper busbar 5. This makes the installation simpler and more convenient, facilitates adaptation to automated production, and significantly improves the installation quality.

[0050] In this embodiment, the conductive connecting piece is a nickel sheet.

[0051] Example 2

[0052] This embodiment discloses an energy storage battery, including an overcurrent protection device as described in Embodiment 1.

[0053] Example 3

[0054] This embodiment discloses an electrical device, including an energy storage battery as described in Embodiment 2.

[0055] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. An overcurrent protection device, characterized in that, It includes a circuit board (1), a fuse mounting bracket (2), a conductive connector (3), and a fuse module (4); The fuse mounting bracket (2) is mounted on the circuit board (1) and has two spaced-apart conductive connecting posts (21); the two ends of the fuse module (4) are respectively connected to the conductive connecting posts (21), and the conductive connecting posts (21) are electrically connected to the circuit board (1) through the conductive connecting piece (3).

2. The overcurrent protection device according to claim 1, characterized in that, One end of the conductive connecting piece (3) is connected to the conductive connecting post (21), and the other end passes through the circuit board (1) and is soldered to the connecting pad (11) on the circuit board (1).

3. The overcurrent protection device according to claim 1, characterized in that, It also includes a first connecting copper busbar (5) and a second connecting copper busbar (6); The first connecting copper busbar (5) is sleeved on one of the conductive connecting posts (21) and pressed on one end of the fuse module (4); the second connecting copper busbar (6) is sleeved on another conductive connecting post (21) and pressed on the other end of the fuse module (4); The conductive connecting post (21) is equipped with a clamping nut for clamping the first connecting copper busbar (5) or the second connecting copper busbar (6).

4. The overcurrent protection device according to claim 3, characterized in that, The first connecting copper busbar (5) is provided with a first connecting part (51) for connecting the battery pack, and the second connecting copper busbar (6) is provided with a second connecting part (61) for connecting the charging and discharging interface.

5. The overcurrent protection device according to claim 1, characterized in that, The conductive connecting piece (3) is bent through the circuit board (1) to form a welding part (31), which is parallel to the bottom surface of the circuit board (1).

6. The overcurrent protection device according to claim 1, characterized in that, The fuse mounting bracket (2) is detachably mounted on the circuit board (1) by fastening screws.

7. The overcurrent protection device according to claim 2, characterized in that, The circuit board (1) has a through hole (101), the conductive connecting piece (3) passes through the circuit board (1) through the through hole (101), and the connecting pad (11) is located on the side of the through hole (101) away from the fuse mounting bracket (2).

8. The overcurrent protection device according to claim 7, characterized in that, The conductive connecting piece (3) forms a Z-shaped structure. One end of the conductive connecting piece (3) is provided with a connecting hole for being fitted onto the conductive connecting post (21), and the other end passes through the through hole (101) to connect to the connecting pad (11).

9. An energy storage battery, characterized in that, It includes an overcurrent protection device as described in any one of claims 1 to 8.

10. An electrical appliance, characterized in that, It includes the energy storage battery as described in claim 9.

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