Battery conducting rack

Abstract

The present application provides a battery conducting frame, which includes a conducting plate and a plurality of conducting rods. The conducting rod includes at least a rod part and a fixing part. The rod part of the conducting rod protrudes out of the conducting plate, and the fixing part is covered in the body of the conducting plate. The rod part of each conducting rod is welded or contacted with a corresponding battery core in a battery module. Furthermore, the melting point of the conducting plate is lower than that of the conducting rod. The fixing part of the conducting rod is made in the body of the conducting plate by a sintering manufacturing method. Thus, the battery conducting frame can be easily manufactured by the sintering method, and the welding part between the conducting rod of the battery conducting frame and the battery core is not easy to be loosened.

Description

Technical Field

[0001] This invention relates to a battery conductive frame, and more particularly to a battery conductive frame used in a battery module. Background Technology

[0002] In recent years, with the growing demand for environmental protection and carbon reduction, electric vehicles have gradually gained popularity. As a result, many car manufacturers have entered the electric vehicle development field in hopes of seizing business opportunities in the electric vehicle market.

[0003] Electric vehicles are powered by batteries. To increase the range of an electric vehicle, it typically incorporates a battery module containing a considerable number of battery cells. Within the battery module, these cells are connected in series or parallel. Furthermore, the battery module includes a battery conductive frame, which comprises a plurality of conductive handles. Each battery cell is welded to a corresponding conductive handle in the conductive frame, allowing each cell to be connected to the others via the conductive handles of the battery conductive frame.

[0004] Therefore, the present invention proposes an innovative battery conductive frame structure that is not only easy to manufacture, but also ensures that when the battery conductive frame is applied to a battery module, the welded portion between the conductive handle of the battery conductive frame and the battery cell is not easily loosened. This is the objective of the present invention. Summary of the Invention

[0005] One objective of this invention is to provide a battery conductive frame for use on a battery module, comprising a conductive plate and a plurality of conductive handles. Each conductive handle includes at least one handle portion and a fixing portion. The fixing portion of the conductive handle is formed into the body of the conductive plate by a sintering method, while the handle portion of the conductive handle protrudes from the conductive plate. The handle portion of each conductive handle protruding from the conductive plate is welded or in contact with a corresponding battery cell in a battery module. Thus, the battery conductive frame of this invention can be easily manufactured using a sintering method.

[0006] Another objective of this invention is to propose a battery conductive frame for use on a battery module. The conductive handle of the battery conductive frame is a high mechanical strength conductive sheet, and each conductive handle has multiple welding points on its handle portion. Through these multiple welding points, the conductive handle is welded to the corresponding battery cell of the battery module, so that the part welded to the battery cell is not easy to loosen.

[0007] Another objective of this invention is to provide a battery conductive frame for use on a battery module. The conductive plate of the battery conductive frame is formed through a thick metal plate with low resistance and high conductivity, so as to reduce the ohmic loss of the battery cells electrically connected to it. In addition, the high conductivity of the conductive plate means high thermal conductivity. When the battery module to which the battery conductive frame is used overheats, the heat generated by the battery module can be quickly distributed on the conductive plate, thereby improving the safety of the battery module in use.

[0008] To achieve the above objectives, the present invention provides a battery conductive frame, comprising: a conductive plate; and a plurality of conductive handles, each including at least one handle portion and a fixing portion, wherein the handle portion of the conductive handle protrudes from the body of the conductive plate, and the fixing portion is enclosed in the body of the conductive plate; wherein the melting point of the conductive plate is lower than the melting point of the conductive handle, and the fixing portion of the conductive handle is formed in the body of the conductive plate by a sintering method.

[0009] In one embodiment of the present invention, the conductive plate is made of copper, while the conductive handle is made of nickel.

[0010] In one embodiment of the present invention, the conductive plate includes a plurality of openings, and the handle of each conductive handle is disposed in the corresponding opening and protrudes out of the conductive plate through the corresponding opening.

[0011] In one embodiment of the present invention, the handle of the conductive handle is provided with at least one welding point, and the conductive handle is welded or in contact with the electrode of the battery cell through the welding point on the handle.

[0012] In one embodiment of the present invention, the fixing part of the conductive handle includes an extension and a tail end. The extension is obliquely disposed between the handle and the tail end, and the tail end is connected to the handle through the extension.

[0013] In one embodiment of the present invention, the conductive handle further includes a connecting portion, through which the tail end of the conductive handle is connected to the tail end of another adjacent conductive handle.

[0014] In one embodiment of the present invention, a portion of the extension will protrude from the body of the conductive plate and connect with a handle located outside the body of the conductive plate.

[0015] In one embodiment of the present invention, the conductive handle includes two handle portions, each handle portion including two solder points.

[0016] In one embodiment of the present invention, the conductive plate is a thick metal plate with low resistance and high conductivity, while the conductive handle is a conductive sheet with high mechanical strength.

[0017] In one embodiment of the present invention, a battery conductive frame is applied to a battery module, the battery module including a plurality of battery cells, and the handle of each conductive frame is welded or in contact with a corresponding battery cell in the battery module.

[0018] To make the above and other objects, features and advantages of the present invention more apparent and understandable, a detailed description is provided below in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a first-view perspective perspective view of the battery conductive frame of the present invention.

[0020] Figure 2This is a second-view perspective perspective view of the battery conductive frame of the present invention.

[0021] Figure 3 This is a perspective view of the conductive handle of the present invention.

[0022] Figure 4 This is a side cross-sectional view of a portion of the battery conductive frame of the present invention.

[0023] Figure 5 This is a cross-sectional schematic diagram of the battery conductive frame of the present invention applied to a battery module.

[0024] Explanation of reference numerals in the attached drawings: 100-Battery conductive frame; 10-Conductive plate; 11-Opening; 20-Conductive handle; 21-Handle portion; 211-Welding point; 23-Fixing part; 231-Extension portion; 233-Tail end; 25-Connecting part; 300-Battery module; 31-Battery cell. Detailed Implementation

[0025] To fully understand the purpose, features and effects of the present invention, the present invention will be described in detail below with reference to the following specific embodiments and accompanying drawings.

[0026] Please refer to the following at the same time Figures 1 to 4 These are, respectively, a first perspective perspective view of the battery conductive frame of the present invention, a second perspective perspective view of the battery conductive frame of the present invention, a perspective view of the conductive handle of the present invention, and a partial structural cross-sectional view of the battery conductive frame of the present invention. Figures 1 to 4 As shown, the battery conductive frame 100 of the present invention includes a conductive plate 10 and a plurality of conductive handles 20. Each conductive handle 20 is positioned within the conductive plate 10. Each conductive handle 20 includes at least one handle portion 21 and a fixing portion 23. The fixing portion 23 connects to the handle portion 21. The fixing portion 23 of the conductive handle 20 is enclosed within the body of the conductive plate 10, while the handle portion 21 of the conductive handle 20 protrudes from the body of the conductive plate 10. The battery conductive frame 100 is applied to a battery module, and the handle portion 21 of the conductive handle 20 protruding from the body of the conductive plate 10 is used to weld or contact the battery cells of the battery module, so that the battery cells of the battery module can be electrically connected.

[0027] Furthermore, the fixing part 23 connects to multiple handles 21, for example, the number of handles 21 is two, but the present invention is not limited thereto. Each handle 21 is provided with multiple welding points 211, for example, the number of welding points 211 of each handle 21 is two, but the present invention is not limited thereto. Each conductive handle 20 is welded or in contact with the battery cell of the corresponding battery module through the welding points 211, so that the battery conductive frame 100 is electrically connected to the battery module. The conductive handle 20 is a high mechanical strength conductive sheet (such as a nickel sheet), and each conductive handle 20 is welded to the battery cell of the corresponding battery module through multiple welding points 211, so that the part of the conductive handle 20 welded to the battery cell is not easy to loosen.

[0028] Furthermore, in this invention, the conductive plate 10 is formed through a thick metal plate with low resistance and high conductivity in order to reduce the ohmic loss of the battery cells to which it is electrically connected; moreover, the high conductivity of the conductive plate 10 means high thermal conductivity, so when the battery module to which the battery conductive frame 100 is used overheats, the heat generated by the battery module can be quickly distributed on the conductive plate 10, thereby improving the safety of the battery module in use.

[0029] The fixing portion 23 of the conductive handle 20 of the present invention includes an extension portion 231 and a tail portion 233. In one embodiment of the present invention, the handle portion 21 and the tail portion 233 are arranged parallel to each other, the extension portion 231 is obliquely disposed between the handle portion 21 and the tail portion 233, and the tail portion 233 is connected to the handle portion 21 through the extension portion 231 extending toward the handle portion 21. Furthermore, in a preferred embodiment of the present invention, a portion of the extension portion 231 protrudes from the body of the conductive plate 10 and is connected to the handle portion 21 located outside the body of the conductive plate 10.

[0030] In addition, each conductive handle 20 further includes a connecting portion 25, and the tail end 233 of each conductive handle 20 is connected to the tail end 233 of another adjacent conductive handle 20 through the connecting portion 25, so that multiple conductive handles 20 in a certain direction (e.g., column direction or row direction) can be connected to each other, and multiple corresponding battery cells electrically connected by multiple conductive handles 20 can be connected in series or in parallel.

[0031] In one embodiment of the present invention, the conductive plate 10 includes a plurality of openings 11, and the handle 21 of each conductive handle 20 is disposed in a corresponding opening 11 and protrudes from the conductive plate 20 through the corresponding opening 11. In this embodiment, the shape of these openings 11 may also be square and arranged in a matrix manner, but the present invention does not limit the shape and arrangement of these openings 11. Of course, in another embodiment of the present invention, the conductive plate 10 may also be a plate body with flat surfaces on both sides and no openings 11, and each conductive handle 20 may be positioned at a corresponding specific position on one surface (such as the upper surface) of the conductive plate 10 through a fixing part 23, and its handle 21 protrudes from the body of the conductive plate 10.

[0032] In this invention, the melting point of the conductive plate 10 is lower than that of the conductive handle 20. For example, the conductive plate 10 is made of copper with a melting point of 1085 degrees Celsius, while the conductive handle 20 is made of nickel with a melting point of 1455 degrees Celsius. In this invention, the battery conductive frame 10 is fabricated in the body of the conductive plate 10 by a sintering process to form the fixing part 23 of the conductive handle 20. During the sintering process, the formed conductive handle 20 is placed in a mold, and then copper metal powder is sprinkled onto the fixing part 23 of each conductive handle 20. Then, an appropriate sintering temperature (e.g., 820-850 degrees Celsius) and / or an appropriate pressing force are applied to the copper metal powder sprinkled on the fixing part 23 of the conductive handle 20 so that the copper metal powder can be tightly aggregated around the fixing part 23 of the conductive handle 20 to form the conductive plate 10. In this way, the fixing part 23 of the conductive handle 20 can be covered in the body of the conductive plate 10.

[0033] Please see Figure 5 This is a cross-sectional schematic diagram of the battery conductive frame of the present invention applied to a battery module, and can be consulted in conjunction with other relevant documents. Figures 1-4 During the assembly of the battery conductive frame 100 into the battery module 300, each conductive handle 20 of the battery conductive frame 100 is first positioned on the top of each corresponding battery cell 31 in the battery module 300; then, the solder point 211 on the handle 21 of each conductive handle 20 is soldered to the top electrode of each corresponding battery cell 31; of course, the bottom electrode of each battery cell 31 in the battery module 300 can be soldered to the solder point 211 on the handle 21 of each corresponding conductive handle 20 of another battery conductive frame 100 (not shown). In this way, the top and bottom electrodes of the battery cells 31 in the battery module 300 are electrically connected through the two battery conductive frames 100, so as to form a circuit loop between the two battery conductive frames 100 and the battery module 300.

[0034] In summary, the present invention uses a sintering method to manufacture the battery conductive frame 100. The battery conductive frame 100 is easy to manufacture and has the characteristics of good mechanical strength, low resistance, high conductivity and high thermal conductivity. When the battery conductive frame 100 is applied to the battery module 300, it can not only improve the stability of the welded part between the conductive handle 20 of the battery conductive frame 100 and the battery cell 31 of the battery module 300, but also provide the battery module 300 with high thermal conductivity in the overheated state, thereby increasing the safety of the battery module 300 in use.

[0035] The above description is merely one preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent variations and modifications made in accordance with the shape, structure, features and spirit described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A battery conductive frame, characterized by, The battery conducting frame comprises: a conducting plate; and a plurality of conducting rods, each of which comprises at least a rod portion and a fixing portion, the rod portion of each of the conducting rods protrudes out of the body of the conducting plate, and the fixing portion of each of the conducting rods is covered in the body of the conducting plate; wherein the melting point of the conducting plate is lower than the melting point of the conducting rods, the conducting rods are placed in a mold in a sintering manner, copper metal powder is sprinkled on the fixing portion of each of the conducting rods, and sintering temperature and / or pressing force is applied to the copper metal powder on the fixing portion of each of the conducting rods to make the copper metal powder tightly gather around the fixing portion of each of the conducting rods to form the conducting plate.

2. The battery conductive rack of claim 1, wherein, The conducting plate is made of copper, and the conducting rods are made of nickel.

3. The battery conductive rack of claim 1, wherein, The conducting plate comprises a plurality of openings, the rod portion of each of the conducting rods is arranged in a corresponding opening and protrudes out of the conducting plate through the corresponding opening.

4. The battery conductive rack of claim 1, wherein, The rod portion of each of the conducting rods is provided with at least one welding point, and each of the conducting rods is welded or contacted with the electrode end of a corresponding battery core of a battery module through the welding point on the rod portion.

5. The battery conductive rack of claim 1, wherein, The fixing portion of each of the conducting rods comprises an extension portion and a tail end portion, the extension portion is arranged obliquely between the rod portion and the tail end portion, and the tail end portion is connected to the rod portion through the extension portion.

6. The battery conductive rack of claim 5, wherein, Each of the conducting rods further comprises a connecting portion, and the tail end portion of each of the conducting rods is connected to the tail end portion of another adjacent conducting rod through the connecting portion.

7. The battery conductive rack of claim 5, wherein, Part of the extension portion protrudes out of the body of the conducting plate and is connected to the rod portion arranged outside the body of the conducting plate.

8. The battery conductive rack of claim 4, wherein, Each of the conducting rods comprises two rod portions, and each of the rod portions comprises two welding points.

9. The battery conductive rack of claim 1, wherein, The conducting plate is a low-resistance and high-conducting thick metal plate, and the conducting rods are high-mechanical-strength conducting pieces.

10. The battery conductive rack of claim 1, wherein, The battery conducting frame is applied to a battery module, the battery module comprises a plurality of battery cores, and the rod portion of each of the conducting rods is welded or contacted with a corresponding battery core of the battery module.

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