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US-20260128395-A1 - BATTERY MODULE AND BATTERY SYSTEM

US20260128395A1US 20260128395 A1US20260128395 A1US 20260128395A1US-20260128395-A1

Abstract

A battery module includes: a plurality of cells; a plurality of sensors to measure at least one of a voltage or a temperature of at least some of the plurality of cells; a control circuit connected with the plurality of sensors via a plurality of cables; a wireless communication circuit connected with the control circuit, and to communicate with an external device; and an antenna connected with the wireless communication circuit. The plurality of cables and the antenna are adjacent to each other.

Inventors

  • Sangjin Hong

Assignees

  • SAMSUNG SDI CO., LTD.

Dates

Publication Date
20260507
Application Date
20251022
Priority Date
20241106

Claims (20)

  1. 1 . A battery module comprising: a plurality of cells; a plurality of sensors configured to measure at least one of a voltage or a temperature of at least some of the plurality of cells; a control circuit connected with the plurality of sensors via a plurality of cables; a wireless communication circuit connected with the control circuit, and configured to communicate with an external device; and an antenna connected with the wireless communication circuit, wherein the plurality of cables and the antenna are adjacent to each other.
  2. 2 . The battery module according to claim 1 , wherein the plurality of cables and the antenna are connected to the control circuit and the wireless communication circuit, respectively, by a single connector.
  3. 3 . The battery module according to claim 2 , wherein, as the plurality of cables becomes farther from the single connector, a number of the plurality of cables is decreased.
  4. 4 . The battery module according to claim 2 , wherein, as the plurality of cables becomes farther from the single connector, areas of the plurality of cables are decreased.
  5. 5 . The battery module according to claim 4 , wherein an area of the antenna is increased by the areas of the plurality of cables that are decreased as the plurality of cables become farther from the single connector.
  6. 6 . The battery module according to claim 2 , wherein the antenna comprises a first sub-antenna having one end connected with the single connector, and a second sub-antenna connected to another end of the first sub-antenna.
  7. 7 . The battery module according to claim 6 , wherein an area of the second sub-antenna is wider than an area of the first sub-antenna.
  8. 8 . The battery module according to claim 6 , wherein each of the first sub-antenna and the second sub-antenna has a plate shape.
  9. 9 . The battery module according to claim 2 , wherein the antenna comprises a first branch that extends from the single connector, a second branch that is branched at a first branch point of the first branch, and a third branch that is branched at a second branch point of the first branch.
  10. 10 . The battery module according to claim 9 , wherein a distance between the second branch point and the single connector is longer than a distance between the first branch point and the single connector, and wherein a number of branches of the third branch is larger than a number of branches of the second branch.
  11. 11 . The battery module according to claim 1 , wherein the plurality of cables and the antenna are electrically insulated from each other.
  12. 12 . The battery module according to claim 2 , wherein an area of the antenna is increased as the antenna becomes farther from the single connector.
  13. 13 . The battery module according to claim 1 , wherein the plurality of cells is aligned along one direction, and wherein the antenna and the plurality of cables extend in a direction parallel to that of the aligned plurality of cells.
  14. 14 . The battery module according to claim 11 , further comprising a top plate covering the plurality of cells, wherein the plurality of cables and the antenna are located between the top plate and the plurality of cells.
  15. 15 . A battery system comprising: a battery module comprising a plurality of cells; and a battery management system (BMS) configured to manage the battery module, wherein the battery module further comprises: a plurality of sensors configured to measure at least one of a voltage or a temperature of at least some of the plurality of cells; a control circuit connected with the plurality of sensors via a plurality of cables; a wireless communication circuit connected with the control circuit, and configured to communicate with an external device; and an antenna connected with the wireless communication circuit, wherein the plurality of cables and the antenna are adjacent to each other, and wherein the battery module is configured to communicate with the battery management system by utilizing the wireless communication circuit.
  16. 16 . The battery system according to claim 15 , wherein the plurality of cables and the antenna are connected with the control circuit and the wireless communication circuit, respectively, by a single connector.
  17. 17 . The battery system according to claim 16 , wherein, as the plurality of cables becomes farther from the single connector, a number of the plurality of cables is decreased.
  18. 18 . The battery system according to claim 16 , wherein, as the plurality of cables becomes farther from the single connector, an area of the plurality of cables is decreased.
  19. 19 . The battery system according to claim 18 , wherein an area of the antenna is increased by the area of the plurality of cables that are decreased as the plurality of cables becomes farther from the single connector.
  20. 20 . The battery system according to claim 15 , wherein the plurality of cells is aligned along one direction, and wherein the antenna and the plurality of cables extend in a direction parallel to that of the aligned plurality of cells.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application claims priority to and the benefit of Korean Patent Application No. 10-2024-0156453, filed on Nov. 6, 2024, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated by reference herein. BACKGROUND 1. Field Aspects of embodiments of the present disclosure relate to a battery module and a battery system. 2. Description of the Related Art Unlike primary batteries that are not designed to be (re)charged, secondary (or rechargeable) batteries are batteries that are designed to be discharged and recharged. Low-capacity secondary batteries are used in portable, small electronic devices, such as smart phones, feature phones, notebook computers, digital cameras, and camcorders, while large-capacity secondary batteries are widely used as power sources for driving motors in hybrid vehicles and electric vehicles and for storing power (e.g., home and/or utility scale power storage). A secondary battery generally includes an electrode assembly composed of a positive electrode and a negative electrode, a case accommodating the same, and electrode terminals connected to the electrode assembly. A battery module may include a plurality of secondary batteries (or cells) connected in series and/or in parallel with one another. For efficient management of the battery module, a battery management system (BMS) may transmit and receive information by using the battery module and a wire communication. The above information disclosed in this Background section is for enhancement of understanding of the background of the present disclosure, and therefore, it may contain information that does not constitute related (or prior) art. SUMMARY In a case of using the wire communication, a cable for the wire communication may make the system more complicated, and may cause a spatial restriction. Embodiments of the present disclosure may be directed to a battery module and a battery system. These and other aspects and features of the present disclosure will be described in or will be apparent from the following description of embodiments of the present disclosure. According to one or more embodiments of the present disclosure, a battery module includes: a plurality of cells; a plurality of sensors configured to measure at least one of a voltage or a temperature of at least some of the plurality of cells; a control circuit connected with the plurality of sensors via a plurality of cables; a wireless communication circuit connected with the control circuit, and configured to communicate with an external device; and an antenna connected with the wireless communication circuit. The plurality of cables and the antenna are adjacent to each other. In an embodiment, the plurality of cables and the antenna may be connected to the control circuit and the wireless communication circuit, respectively, by a single connector. In an embodiment, as the plurality of cables becomes farther from the single connector, a number of the plurality of cables may be decreased. In an embodiment, as the plurality of cables becomes farther from the single connector, areas of the plurality of cables may be decreased. In an embodiment, an area of the antenna may be increased by the areas of the plurality of cables that may be decreased as the plurality of cables become farther from the single connector. In an embodiment, the antenna may include a first sub-antenna having one end connected with the single connector, and a second sub-antenna connected to another end of the first sub-antenna. In an embodiment, an area of the second sub-antenna may be wider than an area of the first sub-antenna. In an embodiment, each of the first sub-antenna and the second sub-antenna may have a plate shape. In an embodiment, the antenna may include a first branch that may extend from the single connector, a second branch that may be branched at a first branch point of the first branch, and a third branch that may be branched at a second branch point of the first branch. In an embodiment, a distance between the second branch point and the single connector may be longer than a distance between the first branch point and the single connector, and a number of branches of the third branch may be larger than a number of branches of the second branch. In an embodiment, the plurality of cables and the antenna may be electrically insulated from each other. In an embodiment, an area of the antenna may be increased as the antenna becomes farther from the single connector. In an embodiment, the plurality of cells may be aligned along one direction, and the antenna and the plurality of cables may extend in a direction parallel to that of the aligned plurality of cells. In an embodiment, the battery module may further include a top plate covering the plurality of cells, and the plurality of cables and the antenna may be located between the top plate and the plurality of cells. According to one or more embodime