Search

EP-4080674-B1 - BATTERY MODULE

EP4080674B1EP 4080674 B1EP4080674 B1EP 4080674B1EP-4080674-B1

Inventors

  • KIM, YONG UK
  • PARK, BYUNG JUN
  • KIM, SUK CHUL
  • KIM, YUN HEE
  • SEOK, JONG HO
  • CHANG, TAE HYUN
  • HAN, DONG HWA

Dates

Publication Date
20260506
Application Date
20220329

Claims (5)

  1. A battery module, configured to close or open a current path, the battery module comprising: a plurality of battery sub-modules (10); and a front cover part (210) configured to cover an outermost stacking surface of the plurality of stacked battery sub-modules (10), wherein the front cover part (210) comprises: a front plate (211) including a contact terminal (11) electrically connected to an outside, a bus bar (12) electrically connecting the plurality of battery sub-modules (10) to each other, and a disconnection induction bus bar (111) coupled to an inside end of the contact terminal (11) and spaced apart from the bus bar (12), and configured to be pressed to be in contact with the bus bar (12); a front cover (212), which is coupled to the front plate (211) and includes a first window (212a) allowing penetration of the contact terminal (11), a second window (212b) spaced apart from the first window (212a) by a predetermined distance, and an insulating switching slider (212c) provided on the front cover (212) and slidably disposed between the first window (212a) and the second window (212b), which is configured to be slided between the bus bar (12) and the disconnection induction bus bar; and a bolt (B) fastening the disconnection induction bus bar (111) and the bus bar (12) to be pressed and contacted; wherein a contact end of the disconnection induction bus bar (111) forms an internal threaded hole (111a) in an internal area, and a contact end of the bus bar (12) forms an internal threaded hole (12a) on a same line as the internal threaded hole (111a) of the disconnection induction bus bar (111).
  2. The battery module of claim 1, wherein the disconnection induction bus bar (111) is elastically supported on the front plate by an elastic member (211a).
  3. The battery module of claim 1, wherein the front plate (211) further arranges a fuse (211b) between the contact terminal (11) and the disconnection induction bus bar (111).
  4. The battery module of claim 1, wherein the second window (212b) is formed at a position corresponding to an overlapping portion between the disconnection induction bus bar (111) and the bus bar(12).
  5. The battery module of claim 1, wherein the insulating switching slider (212c) has a length within a range from a maximum spacing distance between the first window (212a) and the second window (212b) to a minimum spacing distance between the first window (212a) and the second window (212b).

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a battery module. Description of the Related Art Secondary batteries may be repeatedly charged and discharged, and may be applied to various fields such as various mobile devices, electric vehicles (EVs), hybrid electric vehicles (HEVs), or energy storage systems (ESS). With the continuous development of technology, a model capable of outputting more compact and stronger power is being developed. A plurality of secondary batteries is connected in series and/or in parallel to be used in a high-output electric vehicle or hybrid vehicle. The plurality of secondary batteries may be fixed using a member such as a cover or a case, and the plurality of secondary batteries may be electrically connected to each other using a bus bar or the like to be used in the form of a single battery module. In particular, the energy storage system is a device that stores generated power or surplus power or supplies insufficient power in a system with power stored in the secondary battery. Such an energy storage system typically forms a single battery system by electrically connecting battery racks composed of a plurality of battery modules, and requires more attention to safety because the energy storage system may be exposed to a high voltage of several times to several tens of times, unlike a battery pack installed in an electric vehicle or a hybrid vehicle. As described above, the energy storage system may have the risk of accidents such as short circuit or earth fault when a high voltage is applied to an external terminal of the battery module. In order to solve this problem, in KR 10 2019 0124482 that was previously filed by the applicant of the present invention, it is determined whether the high voltage is applied to the external terminal of the battery module using a Manual Service Device (MSD) module. US 2019/334142 A1 relates to a high voltage battery pack including a plurality of battery modules electrically connected with each other, wherein each of the plurality of battery modules comprises external terminals and an MSD module configured to determine whether a voltage is applied to external terminal during operation. SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the related art, and an objective of the present invention is to provide a battery module which can secure stability by determining whether to block or allow the application of voltage to an external terminal in a sliding manner of a switching member. In order to achieve the objective of the present invention, the present invention provides a battery module, including a plurality of battery sub-modules; and a front cover part configured to cover an outermost stacking surface of the plurality of stacked battery sub-modules, wherein the front cover part includes a front plate including a contact terminal electrically connected to an outside, a bus bar electrically connecting the plurality of battery sub-modules to each other, and a disconnection induction bus bar coupled to an inside end of the contact terminal and spaced apart from the bus bar, and configured to be pressed to be in contact with the bus bar; a front cover, which is coupled to the front plate and includes a first window allowing penetration of the contact terminal, a second window spaced apart from the first window by a predetermined distance, and an insulating switching slider provided on the front cover and slidably disposed between the first window nd the second window, which is configured to be slided between the bus bar and the disconnection induction bus bar; and a bolt fastening the disconnection induction bus bar and the bus bar to be pressed and contacted; wherein a contact end of the disconnection induction bus bar forms an internal threaded hole in an internal area, anda contact end of the bus bar forms an internal threaded hole on a same line as the internal threaded hole of the disconnection induction bus bar. The disconnection induction bus bar may be elastically supported on the front plate by an elastic member. The front plate may further arrange a fuse between the contact terminal and the disconnection induction bus bar. The second window may be formed at a position corresponding to an overlapping portion between the disconnection induction bus bar and the bus bar. The switching slider may have a length within a range from a maximum spacing distance between the first window and the second window to a minimum spacing distance between the first window and the second window. The above and other objectives, features, and other advantages of the present invention will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings. The terms or words used in the specification and claims are not limited to the meanings found in a dictionary, but must be understood as