DE-202022003391-U1 - Battery and electrical device

DE202022003391U1DE 202022003391 U1DE202022003391 U1DE 202022003391U1DE-202022003391-U1

Abstract

Battery, including: a case; a battery cell group arranged in the housing, wherein the battery cell group consists of several battery cells stacked on top of each other and electrically connected along a first direction; a separating bar that is fixed in the housing, the separating bar being located on one side of the battery cell group along the first direction; a mounting base that is mounted on the dividing beam; an output electrode for the output of the electrical energy of the battery cell group, wherein the output electrode is attached to the mounting base.

Assignees

CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD

Dates

Publication Date: 20260513
Application Date: 20221021
Priority Date: 20221021

Claims (15)

Battery comprising: a housing; a battery cell group arranged in the housing, the battery cell group consisting of several battery cells stacked one above the other and electrically connected to each other along a first direction; a separator bar fixed in the housing, the separator bar being located on one side of the battery cell group along the first direction; a mounting base mounted on the separator bar; an output electrode for outputting the electrical energy of the battery cell group; the output electrode is attached to the mounting base.
Battery after Claim 1 , wherein the housing comprises a bottom wall and side walls, the side walls enclosing the bottom wall, the separating beam is arranged on the bottom wall, the separating beam extending in a second direction, the second direction, the first direction and the thickness direction of the bottom wall intersect.
Battery after Claim 2 , wherein the separating beam comprises a first surface facing away from the floor wall, the separating beam is provided with a groove recessed from the first surface towards the floor wall, and the mounting base is at least partially arranged in the groove, preferably the mounting base does not protrude from the first surface.
Battery after Claim 3 , wherein the mounting base has a first connecting bore, and the groove bottom is provided with a second connecting bore that fits the first connecting bore, the battery further comprises a first fastening element, wherein the first fastening element engages in the first and the second connecting bore to fix the mounting base to the groove bottom, preferably the mounting base comprises a base body and a connecting part, the output electrode is attached to the base body, the connecting part is connected to the base body and the first connecting bore is provided in the connecting part, preferably the mounting base further comprises a first positioning part, and the separating bar comprises a second positioning part that fits the first positioning part, wherein the first positioning part and the second positioning part are in engagement, preferably the base body comprises a second surface facing the groove bottom, the first positioning part is a projection extending beyond the second surface, and the second positioning part is a first recess located on the groove bottom.
Battery after Claim 4 , wherein the mounting base further comprises a nut, the nut being embedded in the base body, the output electrode having a third connecting bore, the battery further comprising a second fastening element, the second fastening element being guided through the third connecting bore and screwed to the nut to fix the output electrode to the mounting base.
Battery after one of the Claims 4 - 5 , wherein the base body and the connecting part are arranged in a second direction.
Battery after one of the Claims 2 until 6 , wherein the output electrode comprises a first segment and a second segment, wherein the first segment and the second segment are connected to form an L-shaped structure, the first segment is electrically connected to the battery cell that is closest to the separator bar in the battery cell group, and the second segment is attached to the mounting base, preferably the first segment is located along the first direction between the battery cell group and the separator bar, wherein the longitudinal direction of the first segment is parallel to the thickness direction of the bottom wall, and wherein the second segment is connected to the end of the first segment facing away from the bottom wall.
Battery after Claim 7 , wherein a battery cell comprises a housing and electrode terminals. The housing has a first wall facing the separator bar, the electrode terminals are attached to the first wall, the electrode terminals having a first side surface, the plane of the first side surface intersecting the first wall, the output electrode is connected to the first side surface of the electrode terminal of the battery cell that is closest to the separator bar in the battery cell group, preferably the output electrode further comprises a third segment, the third segment extending from the edge in the width direction of the first segment, the third segment being connected to the first side surface, the width direction of the first segment intersecting with the first direction.
Battery after Claim 8 , wherein the mounting base comprises a first limiting part, wherein the first limiting part abuts the third segment along the thickness direction of the bottom wall in order to restrict the movement of the third segment along the thickness direction of the bottom wall, preferably the first limiting part is located on the side of the third segment facing away from the bottom wall.
Battery after one of the Claims 8 until 9 , wherein the enclosure comprises a first wall and a second wall opposite each other in the first direction, a third wall and a fourth wall opposite each other in the second direction, and a fifth wall and a sixth wall opposite each other in the thickness direction of the bottom wall, the areas of the third and fourth walls each being smaller than the area of the first wall, the areas of the third and The areas of the fourth wall are each smaller than the area of the second wall, the areas of the fifth and sixth walls are each smaller than the area of the first wall, and the areas of the fifth and sixth walls are each smaller than the area of the second wall.
Battery after one of the Claims 8 until 10 , wherein the housing also has a second wall opposite the first wall, and in a first area of the edge of the second wall a second recess is formed, the second recess being used to receive the electrode terminals of the battery cell adjacent to the second wall.
Battery after one of the Claims 7 until 11 , wherein the mounting base comprises a base body and an extension part extending from the base body to the floor wall, the extension part being located along the first direction between the first segment and the separating beam.
Battery after one of the Claims 7 until 12 , wherein the mounting base comprises a second limiting part, wherein the second limiting part restricts the movement of the first segment along the width direction of the first segment, preferably the second limiting part comprises at least two locking mechanisms, wherein the at least two locking mechanisms each engage on both sides of the first segment along the width direction.
Battery after one of the Claims 1 until 13 , wherein an insulating layer is provided between the battery cell group and the separator bar.
Electrical device comprising a battery according to one of the Claims 1 until 14 .

Description

AREA OF INVENTION The present application relates to the field of battery technology and in particular to a battery and an electrical device. STATE OF THE ART Energy saving and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles have become an important component of this development due to their energy-saving and environmentally friendly advantages. Battery technology is a crucial factor in the development of electric vehicles. In the development of battery technology, in addition to improving battery safety, energy density is a crucial issue that cannot be neglected. Therefore, the question of how to improve battery energy density is a technical problem that urgently needs to be addressed in battery technology. REVELATION OF THE INVENTION The aim of this application is to provide a battery and an electrical device, wherein the battery has a high energy density. This registration is implemented through the following technical solution: In a first aspect, this application provides a battery comprising a housing, a battery cell group, a separator bar, a mounting base, and an output electrode; the battery cell group is arranged in the housing, the battery cell group consisting of several battery cells stacked on top of each other and electrically connected along a first direction; the separator bar is fixed in the housing, the separator bar being located on one side of the battery cell group along the first direction; the mounting base is mounted on the separator bar; the output electrode serves to output the electrical energy of the battery cell group, the output electrode being attached to the mounting base. According to the battery as described in this application, the divider bar is a component installed in the housing for partitioning the interior of the housing. The output electrode of the battery cell group is fixed to the mounting base, which in turn is mounted on the divider bar. This improves the space utilization in the housing and thus enables a higher energy density of the battery. According to some embodiments of this application, the housing comprises a bottom wall and side walls, the side walls enclosing the bottom wall. The separating beam is arranged on the bottom wall, the separating beam extending in a second direction. The second direction, the first direction, and the thickness direction of the bottom wall intersect. In the solution above, the side and bottom walls define the space for the battery cell assembly. The separator beam is attached to the bottom wall to ensure a stable connection between the separator beam and the housing, allowing the mounting base to be attached to the separator beam. The separator beam extends in the second direction, while its dimensions in the first direction can be smaller to reduce the space requirement. According to some embodiments of this application, the separating beam comprises a first surface facing away from the floor wall. The separating beam is provided with a groove extending from the first surface towards the floor wall, and the mounting base is at least partially arranged in the groove. In the above solution, the groove provides space for the mounting base, and the mounting base is at least partially positioned within the groove. This reduces the space required in the thickness direction of the floor wall after the mounting base and the separating beam have been installed, and minimizes the impact of the mounting base on space utilization. According to some embodiments of this application, the mounting base does not protrude from the first surface. In the above solution, the mounting base is attached after the separating beam. This means the mounting base does not require any additional space in the thickness direction of the bottom wall, which reduces the space required in the housing and has less of an impact on the battery's energy density. According to some embodiments of this application, the mounting base has a first connecting bore, and the groove bottom is provided with a second connecting bore that fits the first connecting bore. The battery also includes a first fastening element, wherein the first fastening element is inserted into the first and the second connecting hole engages to fix the mounting base to the groove bottom. In the above solution, the first connecting hole aligns with the second connecting hole. The first fastener is inserted into both the first and second connecting holes, securing the mounting base to the groove bottom. This simplifies assembly and operation. According to some embodiments of this application, the mounting base comprises a base body and a connecting part. The output electrode is attached to the base body, the connecting part is connected to the base body, and the first connecting bore is provided in the connecting part. In the above solution, the output electrode is attached to the base body, and the connecting part is attached to the separ