Acquisition assembly and battery pack

Abstract

The utility model provides an acquisition assembly and a battery pack. The acquisition assembly comprises a fuse module, a wire and a busbar, the fuse module is arranged on the busbar, and the fuse module comprises a first welding piece electrically connected with the wire; the second welding piece is electrically connected with the busbar; the fuse is electrically connected with the first welding piece and the second welding piece respectively; one or two insulating sheets are arranged, the first welding sheet and the second welding sheet are arranged on the surfaces of the two sides of one insulating sheet respectively, or the first welding sheet, the fuse and the second welding sheet are arranged between the two insulating sheets. According to the utility model, the problem of high cost of the acquisition assembly of the battery pack in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, and in particular to a collection component and a battery pack. Background Art

[0002] A battery pack generally includes battery cells, busbars, and collection components. Multiple battery cells are arranged in sequence to form a battery cell group. A battery pack includes at least one battery cell group. The battery cells are connected by busbars to achieve current transfer. The battery voltage and temperature information is transmitted to the BMS (Battery Management System) through the collection component.

[0003] As the core component of module information acquisition, the acquisition component mainly uses wiring harnesses or FPCs to realize its functions in the prior art. Compared with wiring harnesses, the advantage of FPCs is that fuses can be integrated in the information acquisition circuit to avoid short circuits between batteries caused by short circuits in the information acquisition circuit, so it is safer; however, different types of batteries require different FPCs, which increases the manufacturing cost and development cycle of FPCs. The advantage of wiring harnesses is low cost and short manufacturing cycle; the disadvantage is that fuses cannot be integrated in the information acquisition circuit, and the problem of short circuits between batteries caused by short circuits in the information acquisition circuit cannot be avoided, which greatly affects the safety of the battery. Therefore, while ensuring the safety of the battery, the manufacturing cost of the acquisition component cannot be guaranteed.

[0004] As can be seen from the above, the prior art has the problem of high cost of the acquisition components of the battery pack. Utility Model Content

[0005] The main purpose of the utility model is to provide a collection component and a battery pack to solve the problem of high cost of the collection component of the battery pack in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, there is provided a collection component, including a fuse module, a wire and a busbar, wherein the fuse module is arranged on the busbar, and the fuse module includes: a first welding piece, the first welding piece is electrically connected to the wire; a second welding piece, the second welding piece is electrically connected to the busbar; a fuse, the fuse is electrically connected to the first welding piece and the second welding piece respectively; an insulating sheet, the insulating sheet is one or two, the first welding piece and the second welding piece are respectively arranged on the two side surfaces of one insulating sheet, or the first welding piece, the fuse and the second welding piece are arranged between two insulating sheets.

[0007] Furthermore, there is one insulating sheet, a first welding sheet and a fuse are arranged on a first surface of the insulating sheet, and a second welding sheet is arranged on a second surface of the insulating sheet.

[0008] Furthermore, the insulating sheet is provided with a connection hole, which is located in the overlapping area of ​​the fuse and the second welding sheet, and a conductive structure is provided at the connection hole so that the fuse is electrically connected to the second welding sheet through the connection hole.

[0009] Furthermore, the insulating sheet is provided with a mounting hole, and the wire passes through the mounting hole to be electrically connected to the first welding sheet.

[0010] Furthermore, the fuse and the first welding piece are an integrated structure.

[0011] Furthermore, there are two insulating sheets, including a first insulating sheet and a second insulating sheet, and the first insulating sheet and the second insulating sheet are arranged vertically and horizontally to cover the first welding sheet, the fuse and the second welding sheet.

[0012] Furthermore, the first insulating sheet is provided with a first avoidance opening, which is arranged corresponding to the first welding piece so that the first welding piece is electrically connected to the wire; the second insulating sheet is provided with a second avoidance opening, which is arranged corresponding to the second welding piece so that the second welding piece is electrically connected to the bus.

[0013] Furthermore, the fuse module further comprises an adhesive layer, which is arranged between the second insulating sheet and the busbar and is used for bonding the fuse module and the busbar.

[0014] Furthermore, the first welding piece, the fuse and the second welding piece are an integrated structure.

[0015] According to another aspect of the utility model, a battery pack is provided, comprising a battery cell and the above-mentioned collection component, wherein the collection component is electrically connected to the battery cell.

[0016] By applying the technical solution of the utility model, the collection component includes a fuse module, a wire and a bus, the fuse module is arranged on the bus, the fuse module includes a first welding piece, a second welding piece, a fuse and an insulating sheet, the first welding piece is electrically connected to the wire, the second welding piece is electrically connected to the bus, the fuse is electrically connected to the first welding piece and the second welding piece respectively, there are one or two insulating sheets, the first welding piece and the second welding piece are respectively arranged on the two side surfaces of an insulating sheet, or the first welding piece, the fuse and the second welding piece are arranged between two insulating sheets. In this way, by arranging the fuse module on the bus, the first welding piece is electrically connected to the wire, the second welding piece is electrically connected to the bus, and the first welding piece and the second welding piece are connected through the fuse, so that the wiring harness can be integrated with the fuse module, which overcomes the defect that the wiring harness cannot quickly disconnect the loop when the battery pack is short-circuited, and then on the premise of ensuring the safety of the battery pack, the manufacturing cost of the collection component is greatly reduced, and the problem of high cost of the collection component of the battery pack in the prior art is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram showing the front and back structures of a fuse module in a specific embodiment of the utility model is shown;

[0019] Figure 2 A schematic diagram showing a structure in which a collection component is located on a bus bar in a specific embodiment of the utility model;

[0020] Figure 3 A partial structural schematic diagram of a battery pack in a specific embodiment of the utility model is shown;

[0021] Figure 4 A schematic diagram showing the front and back structures of a fuse module in another specific embodiment of the utility model is shown;

[0022] Figure 5 An exploded view of a fuse module in another specific embodiment of the utility model is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Fuse module; 11. First welding piece; 12. Second welding piece; 13. Fuse; 14. Insulating sheet; 141. First surface; 142. Second surface; 143. Connecting hole; 144. Mounting hole; 145. First insulating sheet; 1451. First avoidance; 146. Second insulating sheet; 1461. Second avoidance; 15. Glue layer; 20. Wire; 30. Bus; 40. Battery cell. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0028] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] In order to solve the problem of high cost of the acquisition component of the battery pack in the prior art, the utility model provides a acquisition component and a battery pack. Among them, the battery pack includes the acquisition component.

[0030] like Figures 1 to 5 As shown, the acquisition component includes a fuse module 10, a wire 20 and a bus bar 30, and the fuse module 10 is arranged on the bus bar 30. The fuse module 10 includes a first welding piece 11, a second welding piece 12, a fuse 13 and an insulating sheet 14. The first welding piece 11 is electrically connected to the wire 20. The second welding piece 12 is electrically connected to the bus bar 30. The fuse 13 is electrically connected to the first welding piece 11 and the second welding piece 12 respectively. There are one or two insulating sheets 14, and the first welding piece 11 and the second welding piece 12 are respectively arranged on the two side surfaces of one insulating sheet 14, or the first welding piece 11, the fuse 13 and the second welding piece 12 are arranged between two insulating sheets 14. It can be understood that the insulating sheet 14 is made of an insulating material, and the first welding piece 11 and the second welding piece 12 are both conductive metal sheets.

[0031] The acquisition component includes a fuse module 10, a wire 20 and a bus 30, the fuse module 10 is arranged on the bus 30, the fuse module 10 includes a first welding piece 11, a second welding piece 12, a fuse 13 and an insulating sheet 14, the first welding piece 11 is electrically connected to the wire 20, the second welding piece 12 is electrically connected to the bus 30, the fuse 13 is electrically connected to the first welding piece 11 and the second welding piece 12 respectively, the insulating sheet 14 is one or two, the first welding piece 11 and the second welding piece 12 are respectively arranged on the two side surfaces of one insulating sheet 14, or the first welding piece 11 , the fuse 13 and the second welding piece 12 are arranged between the two insulating sheets 14. In this way, by arranging the fuse module 10 on the bus 30, one side of the first welding piece 11 is electrically connected to the wire 20, one side of the second welding piece 12 is electrically connected to the bus 30, and the other side of the first welding piece 11 and the other side of the second welding piece 12 are electrically connected to the fuse 13 respectively, so that the wiring harness can integrate the fuse module 10, overcoming the defect that the wiring harness cannot quickly disconnect the loop when the battery pack is short-circuited, thereby greatly reducing the manufacturing cost of the acquisition component under the premise of ensuring the safety of the battery pack.

[0032] like Figure 1 As shown, in this embodiment, there is one insulating sheet 14, the first welding sheet 11 and the fuse 13 are arranged on the first surface 141 of the insulating sheet 14, and the second welding sheet 12 is arranged on the second surface 142 of the insulating sheet 14. It can be understood that when the fuse module 10 is arranged on the busbar 30, the second surface 142 of the insulating sheet 14 is in contact with the busbar 30. In order to avoid the first welding sheet 11 and the fuse 13 from directly contacting the busbar 30, it is necessary to arrange the first welding sheet 11 and the fuse 13 on the first surface 141 of the insulating sheet 14, so as to isolate the first welding sheet 11 and the fuse 13 from the busbar 30 through the insulating sheet 14, and then arrange the second welding sheet 12 on the second surface 142 of the insulating sheet 14, so as to achieve electrical connection with the busbar 30.

[0033] In this embodiment, the first welding piece 11 is welded to the wire 20 , and the second welding piece 12 is welded to the bus bar 30 .

[0034] Furthermore, in this embodiment, the fuse 13 and the first welding piece 11 are an integrated structure. Since the fuse 13 and the first welding piece 11 are located on the same side of the insulating sheet 14, the fuse 13 and the first welding piece 11 are arranged as an integrated structure, which can improve the structural strength of the fuse 13 and the first welding piece 11 and improve the service life.

[0035] like Figure 1As shown, the insulating sheet 14 is provided with a connection hole 143. The connection hole 143 is located in the overlapping area of ​​the fuse 13 and the second welding sheet 12, and a conductive structure is provided at the connection hole 143 so that the fuse 13 is electrically connected to the second welding sheet 12 through the connection hole 143. Specifically, the conductive structure can be a metal plating layer provided on the surface of the connection hole 143, and the metal plating layer extends to the first surface 141 and the second surface 142 of the insulating sheet 14 respectively, and one end of the fuse 13 and one end of the second welding sheet 12 are respectively welded to the metal plating layer. Of course, the conductive structure can also be a structure such as a metal column fixed in the connection hole 143, which can be selected according to actual needs.

[0036] like Figure 1 As shown, the insulating sheet 14 is provided with a mounting hole 144. The wire 20 passes through the mounting hole 144 and is electrically connected to the first welding sheet 11. Specifically, the wire 20 passes through the mounting hole 144 from the bottom of the insulating sheet 14 and then is welded to the first welding sheet 11, so that the mounting hole 144 can limit the wire 20 and play a role in pre-fixing the wire 20.

[0037] In another embodiment, Figures 4 to 5 As shown, there are two insulating sheets 14 , including a first insulating sheet 145 and a second insulating sheet 146 . The first insulating sheet 145 and the second insulating sheet 146 are arranged vertically to cover the first welding sheet 11 , the fuse 13 and the second welding sheet 12 .

[0038] like Figures 4 to 5 As shown, the first insulating sheet 145 is provided with a first avoidance opening 1451, and the first avoidance opening 1451 is arranged corresponding to the first welding piece 11, so that the first welding piece 11 is electrically connected to the wire 20. The second insulating sheet 146 is provided with a second avoidance opening 1461, and the second avoidance opening 1461 is arranged corresponding to the second welding piece 12, so that the second welding piece 12 is electrically connected to the bus bar 30. In other words, the conductive parts of the fuse module 10 are covered by two insulating sheets, and only two avoidance holes are exposed to be electrically connected to the wire 20 and the bus bar 30, so as to avoid the first welding piece 11 and the second welding piece 12 from being directly connected to the fuse 13, and to avoid the first welding piece 11 and the fuse 13 from being directly connected to the bus bar 30.

[0039] like Figure 5 As shown, the fuse module 10 further includes an adhesive layer 15 , which is disposed below the second insulating sheet 146 and is used to bond the fuse module 10 and the busbar 30 , thereby playing a role in pre-fixing the fuse module 10 and the busbar 30 .

[0040] In this embodiment, the first welding piece 11, the fuse 13 and the second welding piece 12 are an integrated structure. Figure 5As shown, the first welding piece 11, the fuse 13, and the second welding piece 12 are connected in sequence to form a whole piece structure, which is convenient for the first insulating sheet 145 and the second insulating sheet 146 to fit and cover. The first welding piece 11 and the second welding piece 12 are respectively located at the two ends of the fuse module 10, and accordingly, the first avoidance opening 1451 and the second avoidance opening 1461 are respectively located at the two ends of the fuse module 10, so as to be staggered. By setting the first welding piece 11, the fuse 13, and the second welding piece 12 as an integrated structure, the structural strength of the first welding piece 11, the fuse 13, and the second welding piece 12 can be improved, and the service life can be improved.

[0041] like Figure 3 As shown, the present application also provides a battery pack, including a battery cell 40 and the above-mentioned collection component, and the collection component is electrically connected to the battery cell 40.

[0042] In this embodiment, the busbar 30 is electrically connected to the battery cell 40, and the fuse module 10 is electrically connected to the battery management system through the wire 20, thereby forming a sampling loop. When the current in the sampling loop increases abnormally and heats up, the fuse 13 melts itself to cut off the current, thereby protecting the safe operation of the entire battery pack. When a sampling loop is short-circuited, it is only necessary to replace the fuse module 10 in the corresponding sampling loop.

[0043] In this embodiment, if Figure 3 As shown, the busbar 30 has two types, including a first busbar and a second busbar, wherein the first busbar is electrically connected to two adjacent battery cells 40, and the second busbar is electrically connected to the battery cell 40 located at the end of the battery pack, thereby leading out the positive and negative electrodes of the battery pack. Specifically, the first busbar is electrically connected to the positive electrode post of one battery cell 40 and the negative electrode post of the other battery cell 40 of the two adjacent battery cells 40, respectively. One end of the second busbar is connected to the post of the battery cell 40 located at the end of the battery pack, and the other end is used to lead out the positive and negative electrodes of the battery pack.

[0044] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects: by setting the acquisition component including the fuse module 10, the wire 20 and the bus 30, the fuse module 10 is arranged on the bus 30, the fuse module 10 includes the first welding piece 11, the second welding piece 12, the fuse 13 and the insulating sheet 14, the first welding piece 11 is electrically connected to the wire 20, the second welding piece 12 is electrically connected to the bus 30, the fuse 13 is electrically connected to the first welding piece 11 and the second welding piece 12 respectively, the insulating sheet 14 is one or two, the first welding piece 11 and the second welding piece 12 are respectively arranged on an insulating sheet 14. The two side surfaces of 14, or the first welding piece 11, the fuse 13 and the second welding piece 12 are arranged between the two insulating sheets 14. In this way, by arranging the fuse module 10 on the bus 30, one side of the first welding piece 11 is electrically connected to the wire 20, one side of the second welding piece 12 is electrically connected to the bus 30, and the other side of the first welding piece 11 and the other side of the second welding piece 12 are respectively electrically connected to the fuse 13, so that the wiring harness can be integrated with the fuse module 10, which overcomes the defect that the wiring harness cannot quickly disconnect the loop when the battery pack is short-circuited, thereby greatly reducing the manufacturing cost of the acquisition component under the premise of ensuring the safety of the battery pack.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] It should be noted that 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 numbers 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.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A collection component, characterized in that: The invention comprises a fuse module (10), a wire (20) and a busbar (30), wherein the fuse module (10) is arranged on the busbar (30), and the fuse module (10) comprises: A first welding sheet (11), the first welding sheet (11) being electrically connected to the wire (20); A second welding piece (12), the second welding piece (12) being electrically connected to the busbar (30); A fuse (13), wherein the fuse (13) is electrically connected to the first welding piece (11) and the second welding piece (12) respectively; An insulating sheet (14), wherein the insulating sheet (14) is one or two, the first welding sheet (11) and the second welding sheet (12) are respectively arranged on the two side surfaces of one insulating sheet (14), or the first welding sheet (11), the fuse (13) and the second welding sheet (12) are arranged between two insulating sheets (14).

2. The collection component according to claim 1, characterized in that: The insulating sheet (14) is one, the first welding sheet (11) and the fuse (13) are arranged on a first surface (141) of the insulating sheet (14), and the second welding sheet (12) is arranged on a second surface (142) of the insulating sheet (14).

3. The collection component according to claim 2, characterized in that: The insulating sheet (14) is provided with a connection hole (143), the connection hole (143) is located in the overlapping area of ​​the fuse (13) and the second welding sheet (12), and a conductive structure is provided at the connection hole (143) so that the fuse (13) is electrically connected to the second welding sheet (12) through the connection hole (143).

4. The collection component according to claim 2, characterized in that: The insulating sheet (14) is provided with a mounting hole (144), and the conductive wire (20) passes through the mounting hole (144) to be electrically connected to the first welding sheet (11).

5. The collection component according to claim 2, characterized in that: The fuse (13) and the first welding piece (11) are an integrated structure.

6. The collection component according to claim 1, characterized in that: There are two insulating sheets (14), and the two insulating sheets (14) include a first insulating sheet (145) and a second insulating sheet (146). The first insulating sheet (145) and the second insulating sheet (146) are arranged in a vertically laminated manner to cover the first welding sheet (11), the fuse (13) and the second welding sheet (12).

7. The collection assembly according to claim 6, characterized in that: The first insulating sheet (145) is provided with a first avoidance opening (1451), and the first avoidance opening (1451) is arranged corresponding to the first welding sheet (11) so that the first welding sheet (11) is electrically connected to the conductive wire (20); the second insulating sheet (146) is provided with a second avoidance opening (1461), and the second avoidance opening (1461) is arranged corresponding to the second welding sheet (12) so that the second welding sheet (12) is electrically connected to the bus (30).

8. The collection assembly according to claim 6, characterized in that: The fuse module (10) further comprises an adhesive layer (15), wherein the adhesive layer (15) is arranged between the second insulating sheet (146) and the busbar (30) and is used for bonding the fuse module (10) and the busbar (30).

9. The collection assembly according to claim 6, characterized in that: The first welding piece (11), the fuse (13) and the second welding piece (12) are an integrated structure.

10. A battery pack, characterized in that: It comprises a battery cell (40) and a collection component according to any one of claims 1 to 9, wherein the collection component is electrically connected to the battery cell (40).

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