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Battery

A technology for batteries and battery cells, applied in secondary batteries, circuits, battery pack components, etc., can solve problems such as high stress, no longer guaranteeing battery cell cooling, failure, etc., to achieve improved life expectancy and less risk of failure effect of stress reduction

Pending Publication Date: 2021-08-03
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, there is the risk that towards the end of life the stresses in the adhesive become so high that the bond fails mechanically and thus also no longer guarantees the cooling of the battery cells.

Method used

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Examples

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Embodiment Construction

[0027] Figure 1 to Figure 4Shown is a battery 100, in particular a lithium-ion battery, which has a plurality of battery cells 10 which are interconnected to form a cell group (see figure 1 with figure 2 ) and is housed in housing 20 (see image 3 with Figure 4 ). according to image 3 , the battery cell 10 is bonded to the bottom 21 of the cell housing 20 by means of a thermally conductive adhesive TIM. as from figure 1 with figure 2 As can be seen, a plurality of spacer elements 11 are provided, one spacer element 11 being arranged in each case between two adjacent battery cells 10 . Alternatively, a spacer element 11 can also be arranged between the end-side battery cells 10 and the two end plates 22 .

[0028] The end plate 22 delimits the cell stack at the end side. The end plates 22 are connected by at least one tensioning strap 23 and in particular are tensioned against one another, so that the battery cells 10 are likewise tensioned between the end plates ...

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Abstract

The invention relates to a battery (100), in particular a lithium-ion battery, having: a plurality of battery cells (10), which are assembled to form a cell stack and are received in a housing (20), wherein the battery cells (10) are bonded to the base (21) of the cell housing (20) by a heat conductive bonding material (TIM), a plurality of spacer elements (11), wherein a spacer element (11) of the plurality of spacer elements (11) is arranged in each case between two adjacent battery cells (10) of the plurality of battery cells (10), two end plates (22), which delimit the cell stack at the ends, wherein the end plates (22) are connected by at least one tensioning band (23), wherein the at least one tensioning band (23) at least partially surrounds the cell stack circumferentially. To this end, it is provided according to the invention that the at least one tensioning band (23) is bonded to the side walls of the battery cell (10) by a band bonding material.

Description

technical field [0001] The invention relates to a battery, in particular a lithium-ion battery, according to the preamble of the independent device claim. Background technique [0002] In a modularly constructed battery, the individual battery cells are interconnected to form a cell group, which is accommodated in a housing. Lithium-ion cells, such as lithium-polymer cells, heat up due to chemical change processes. This often occurs with rapid energy release or energy absorption. The more powerful a battery is, the more it gets hot. Accordingly, the thermal management system must be effective. In addition to effectively cooling the cells to a favorable operating temperature, it is also necessary to heat the cells at temperatures below 10°C (Celsius), since at these temperatures the cells only Allowed to be charged limitedly. [0003] The cooling of the battery cells is achieved in today's batteries primarily by liquid temperature control, for example with a water / glycol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/204H01M50/289H01M50/244H01M50/258H01M10/653H01M10/0525H01M10/058
CPCH01M10/653H01M10/0525H01M10/058H01M50/209H01M50/264H01M50/289H01M10/647H01M10/6554Y02P70/50Y02E60/10H01M50/293H01M10/0481
Inventor M·施密特I·M·利卡M·卡斯纳R·马克思
Owner ROBERT BOSCH GMBH
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