Soft package battery cell series connection fixing device, battery module, battery pack and automobile

A technology for fixing devices and battery packs, which is applied to battery pack parts, circuits, electrical components, etc., can solve problems such as long welding time, inability to arrange soft-packed batteries, and battery packs that need to be improved, so as to achieve convenient installation and The effect of repair and replacement

Active Publication Date: 2021-03-23
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2. After the tabs and busbars are welded, the soft-packed batteries are arranged on one side of the busbar surface, and the soft-packed batteries can no longer be arranged on the other side of the busbar, which greatly limits the layout of the soft-packed batteries integrated into the module. Flexibility restricts the large-scale integration of modules;
[0006] 3. When welding the tabs, it is necessary to weld the tabs of a group of soft-packed cells multiple times and in multiple places, so that the tabs of each soft-packed cell are welded to the bus bar. The welding time is long and the operation Complicated, thus reducing the production efficiency of power batteries
[0007] In summary, the existing new energy vehicle battery packs still need to be improved

Method used

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  • Soft package battery cell series connection fixing device, battery module, battery pack and automobile
  • Soft package battery cell series connection fixing device, battery module, battery pack and automobile
  • Soft package battery cell series connection fixing device, battery module, battery pack and automobile

Examples

Experimental program
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Embodiment 1

[0051] A soft-pack battery series fixing device, the structure of which is as follows: figure 1 and figure 2 As shown, it includes a tab opposite fixing block 20 and two tab limiting plates 10, the two tab limiting plates 10 are respectively arranged on both sides of the tab opposing fixing block 20, and the tab limiting plates 10 It is detachably connected with the fixed block 20 opposite to the tab.

[0052] Specifically, the structure of the tab stop plate 10 is as follows: Figure 5 and Figure 6 As shown, the main body includes a base 11, and the base 11 is provided with more than two tab passing holes 12 parallel to each other and tab guiding surfaces 13 having the same number as the tab passing holes 12, and the tab guiding surfaces 13 The positions are in one-to-one correspondence with the positions where the tabs pass through the holes 12 .

[0053] The base 11 is the main body of the lug limiting plate 10 , and the tab limiting plate 10 is sleeved on the end of ...

Embodiment 2

[0074] Based on the same inventive concept, this embodiment provides a battery module 100, the structure of which is as follows Figure 9 and Figure 10 As shown, the battery module 100 includes a set of flat and long cell modules 130, a wire harness isolation plate and a bus bar assembly 120, and a module case 110. The two ends of the wire harness isolation plate and the bus bar assembly 120 specifically include the wire harness isolation plate 121 and the bus bar 122. The wire harness isolation plate 121 and the bus bar 122 can be set as an integrated structure or a split structure. In this embodiment, the wire harness isolation plate and the bus bar The detailed structure of the bus bar assembly 120 can refer to the prior art, and the present invention does not make specific limitations thereto. The wire harness isolation plate and bus bar assembly 120 and a set of flat and long cell modules 130 are all covered in the module casing 110, and the module casing 110 specifical...

Embodiment 3

[0080] Based on the same inventive concept, this embodiment provides another battery module 100, the structure of which is as follows Figure 11 As shown, the battery module 100 includes more than two sets of elongated battery modules 130, wire harness isolation plates and busbar assemblies 120, and a module case 110. The cells are stacked in the thickness direction to form a cell stack 140 , and a flame-retardant and high-temperature-resistant pad can be provided between two adjacent sets of elongated cell modules 130 . The wire harness isolation plate and bus bar assembly 120 is installed at both ends of the cell stack 140. The wire harness isolation plate and bus bar assembly 120 specifically includes a wire harness isolation plate 121 and a bus bar 122. The wire harness isolation plate 121 and the bus bar 122 can be set as one structure or split structure, the detailed structure of the wire harness isolation plate and the bus bar assembly 120 in this embodiment can refer t...

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Abstract

The invention discloses a soft package battery cell series connection fixing device, a battery module, a battery pack and an automobile. The soft package battery cell series connection fixing device comprises a tab opposite fixing block and two tab limiting plates; the two tab limiting plates are respectively arranged at two sides of the tab opposite fixing block; each tab limiting plate comprisesa base; the base is provided with more than two tab through holes which are parallel to each other and tab guide surfaces of which the number is the same as that of the tab through holes; at least one tab guide surface comprises a guide inclined surface, and the guide inclined surface inclines towards the same design position, so that a protruding part is formed on one surface of the base, and alimiting mechanism is arranged at the tip end of the protruding part and used for clamping the end part of the tab; accommodating cavities for allowing the protruding parts to extend into are formed in the two connecting side surfaces of the tab opposite fixing block; and a welding channel communicating with the accommodating cavities is formed in the tab opposite fixing block. On the basis of notchanging the chemical system of soft package battery cells, the large-scale grouping of the soft package battery cells is facilitated, and the grouping efficiency is improved.

Description

technical field [0001] The application belongs to the technical field of new energy automobiles, and in particular relates to a soft-pack battery series fixing device, a battery module, a battery pack and an automobile. Background technique [0002] With the continuous popularization of new energy vehicles, the requirements for the use of power batteries in new energy vehicles are becoming higher and higher. The high battery life of new energy vehicles is the basic demand of consumers, and improving the specific energy of the power battery is the key to improving the battery life of the whole vehicle. For common new energy vehicles, the power battery pack is more than 1m in length and width; while currently on the market, the length of the battery module is generally around 0.3m to 0.6m, so multiple batteries need to be installed in the power battery pack mod. [0003] When the power battery soft-packed cells are grouped into modules, the tabs of the soft-packed cells are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/531H01M50/502H01M50/505H01M50/51H01M50/516H01M50/528H01M50/244H01M50/249
CPCY02E60/10
Inventor 曹元璞史建鹏刘敏胡远森龚钰
Owner DONGFENG MOTOR CORP HUBEI
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