KR-20260067198-A - BATTERY PACK WITH PREVENTION GUIDE UNIT

Abstract

The present invention relates to a battery pack comprising: a plurality of battery modules; an outer frame; and a pack housing comprising a grid-shaped partition including a first partition and a second partition to form a plurality of receiving grooves for accommodating the battery modules, provided on the inner side of the outer frame; a BMS system electrically connected to the plurality of battery modules through a connector; and a guide unit that guides the connector to be positioned along the upper side of the first partition, wherein the guide unit is inserted and coupled into a guide groove formed on the upper side of the first partition.

Inventors

• 손홍세
• 문기주
• 김민범

Assignees

• 주식회사 엘지에너지솔루션

Dates

Publication Date

20260512

Application Date

20241105

Claims (12)

1. Multiple battery modules; A pack housing comprising an outer frame, and a grid-shaped partition including a first partition and a second partition provided on the inner side of the outer frame to form a plurality of receiving grooves for accommodating the battery module; A BMS system electrically connected to the plurality of battery modules through a connector; and A guide unit that guides the connector to be positioned along the upper side of the first bulkhead; comprising, A battery pack characterized in that the guide unit is inserted and coupled into a guide groove formed on the upper part of the first partition.
2. In paragraph 1, A battery pack characterized in that the guide grooves are formed in multiple numbers by being partially recessed downward from the upper surface of the first partition.
3. In paragraph 2, The above guide unit is, A body part inserted into the above guide groove; and A battery pack characterized by including a head portion formed on the upper part of the body portion and extending further outward than the circumference of the guide groove.
4. In paragraph 3, A battery pack characterized by the connector comprising a terminal portion electrically connected to the BMS system and a wire for transporting power or current.
5. In paragraph 4, The above guide unit is positioned so that a part of the body portion and the head portion are exposed from the guide groove, and A battery pack characterized in that the above-mentioned wire is wound on the outer surface of a portion of the body part that is exposed.
6. In paragraph 5, A battery pack characterized by the above guide unit pressing and fixing a portion of the wire through the upper surface of the first bulkhead and the head portion.
7. In paragraph 4, Female screw threads are formed on the inner surface of the above guide groove, and A battery pack characterized by having male screw threads formed on the outer surface of the body portion and screw-coupled with the guide groove.
8. In paragraph 4, A battery pack characterized by including an extension portion that extends further outward than the circumference of the guide groove and is seated on the upper surface of the first partition, and a guide hole formed on the upper side of the extension portion to allow the wire to pass through.
9. In paragraph 2, The first partition wall is arranged along a first direction corresponding to the full width direction of a plurality of battery modules accommodated in the receiving groove, and A battery pack characterized in that the second partition is arranged along a second direction orthogonal to the first direction.
10. In Paragraph 9, The above BMS system is, A plurality of slave control units provided to be connected to each of the plurality of battery modules; and A battery pack characterized by including a master control unit connected to the plurality of slave control units and accommodated in one of the plurality of receiving grooves.
11. In Paragraph 10, A battery pack characterized by the above connector connecting the battery module and the slave control unit and/or the slave control unit and the master control unit.
12. In Paragraph 10, A battery pack characterized in that the slave control unit is positioned against the first partition.

Description

Battery pack equipped with a prevention guide unit The present invention relates to a battery pack equipped with a guide unit for preventing wire breakage, and more specifically, to a battery pack equipped with a guide unit for preventing wire breakage that can prevent the wire breakage of a connector by connecting a connector received in a connector to a battery module in an organized state. With the increasing technological development and demand for mobile devices, rechargeable secondary batteries are being used as an energy source for various mobile devices. Secondary batteries are also attracting attention as an energy source for electric vehicles and hybrid electric vehicles, which are being presented as alternatives to conventional gasoline and diesel vehicles that use fossil fuels. Secondary batteries are classified according to the shape of the battery case into cylindrical and prismatic batteries, in which the electrode assembly is embedded in a cylindrical or prismatic metal can, and pouch-type batteries, in which the electrode assembly is embedded in a pouch-type case made of aluminum laminate sheets. Currently, widely used types of secondary batteries include lithium-ion batteries, lithium-polymer batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and nickel-zinc batteries. The operating voltage of these unit secondary battery cells, or unit battery cells, is approximately 2.0V to 5.0V. Therefore, if a higher output voltage is required, multiple battery cells may be connected in series to form a cell module assembly, and cell module assemblies may also be connected in series or parallel to form a battery module according to the required output voltage or charge/discharge capacity. It is common practice to manufacture a battery pack by adding additional components using at least one of these battery modules. Such battery packs include at least one battery management system (hereinafter referred to as 'BMS') that monitors the status of each battery module included therein and executes control operations corresponding to the monitored status. Since each battery module included in a battery pack contains multiple battery cells, there are limitations to monitoring the status of all battery cells in the pack using a single BMS. Accordingly, a method has recently become widely used in which a BMS is installed for each predetermined number of battery modules in a battery pack, and one of these multiple BMSs is set as the master BMS while the remaining BMSs are set as slave BMSs to control the overall status of the battery pack. FIG. 1 is a perspective view illustrating a battery pack according to the prior art. Referring to FIG. 1, the battery pack is configured such that a plurality of battery modules (2) are accommodated inside a pack housing (1), the battery modules (2) are connected to a slave control unit (3), and the plurality of slave control units (3) are connected to a master control unit (4). At this time, each battery module (2) and slave control unit (3), and the slave control unit (3) and master control unit (4) are electrically connected through a connector. However, if the connectors are connected in an unorganized state and housed inside the pack housing (1), a problem occurs where the connectors become disconnected as they move due to impact inside or outside the battery pack. FIG. 1 is a perspective view illustrating a battery pack according to the prior art. FIG. 2 is a perspective view of a battery pack according to the present invention. FIG. 3 is a top view of a battery pack according to the present invention. FIG. 4 is a perspective view of a battery pack according to the present invention viewed from one side. FIG. 5 is a drawing illustrating a first embodiment of a guide unit constituting a battery pack according to the present invention. FIG. 6 is a drawing illustrating a second embodiment of a guide unit constituting a battery pack according to the present invention. Embodiments that enable a person skilled in the art to easily implement the present invention are described in detail below with reference to the attached drawings. However, in describing the operating principles of preferred embodiments of the present invention in detail, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the essence of the present invention, such detailed description is omitted. In addition, the same reference numerals are used for parts having similar functions and operations throughout the drawings. Throughout the specification, when a part is described as being connected to another part, this includes not only cases where they are directly connected, but also cases where they are indirectly connected with other elements in between. Furthermore, unless specifically stated otherwise, the inclusion of a certain component does not exclude other components but implies that additional components may be included. Herei