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CN-224232693-U - Battery pack and electric equipment

CN224232693UCN 224232693 UCN224232693 UCN 224232693UCN-224232693-U

Abstract

The application provides a battery pack and electric equipment. Relates to the technical field of batteries. The battery pack includes a housing, a separator, a temperature and pressure detecting member, a control member, and a plurality of battery cells. The plurality of electric cores are sequentially arranged along a first direction, the partition piece is arranged between the adjacent electric cores, the temperature and pressure detection piece is electrically connected with the control piece, and the control piece is used for obtaining detection signals of the temperature and pressure detection piece. Through setting up temperature pressure detection spare between adjacent electric core, at electric core out of control, and when the explosion-proof valve of electric core's electric core does not open, the inside change of electric core can be detected to temperature pressure detection spare, and control can discern temperature, pressure abnormal conditions more fast, reduces response time, has improved the recognition rate of temperature, pressure when battery Bao Re out of control, has reduced the security risk that the thermal runaway brought.

Inventors

  • ZHANG CHAO
  • ZHANG WEI
  • CAO MINGWEI
  • XU JIAJIA

Assignees

  • 合肥国轩高科动力能源有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (10)

  1. 1. A battery pack, comprising: a housing formed with a first cavity; the battery cells (100) are positioned in the first cavity, and the battery cells (100) are sequentially arranged along the first direction; -a separator (200), said separator (200) being arranged between adjacent cells (100); The temperature and pressure detection piece is arranged between the adjacent battery cells (100); the control piece is electrically connected with the temperature and pressure detection piece and is used for acquiring detection signals of the temperature and pressure detection piece.
  2. 2. The battery pack according to claim 1, wherein the separator (200) is formed with a second cavity (230); The partition (200) is provided with an edge area (210) and a central area (220), wherein the edge area (210) surrounds the periphery of the central area (220), and the second cavity (230) is arranged in the central area (220); the temperature and pressure detecting member is located in the second chamber (230).
  3. 3. The battery pack according to claim 1, wherein the battery cell (100), the temperature-pressure detecting member, and the separator (200) are disposed in this order in the first direction; along a plane perpendicular to the first direction, the separator (200) has an edge region (210) and a central region (220), the edge region (210) surrounding the central region (220); both ends of the temperature and pressure detecting member are respectively abutted against the cell (100) and the central region (220) of the separating member (200).
  4. 4. The battery pack according to claim 1, wherein a mounting groove is provided on a side of the separator (200) close to the battery cell (100) in the first direction, and a notch of the mounting groove faces the battery cell (100); The partition (200) has an edge region (210) and a center region (220) along a plane perpendicular to the first direction, the edge region (210) surrounding the center region (220), the mounting groove being provided in the center region (220); the temperature and pressure detection piece is positioned in the mounting groove.
  5. 5. The battery pack of claim 2, further comprising a transmission; the partition piece (200) is provided with a connecting cavity, and two ends of the connecting cavity are respectively communicated with the second cavity (230) and the first cavity; The transmission piece is positioned in the connecting cavity, and the control piece is positioned in the first cavity; And two ends of the transmission piece are respectively and electrically connected with the temperature and pressure detection piece and the control piece.
  6. 6. The battery pack of any one of claims 1-4, wherein the temperature and pressure sensing member has a transmitting end and the control member has a receiving end; The transmitting end of the temperature and pressure detecting piece faces the receiving end of the control piece, and the receiving end is used for receiving signals transmitted by the transmitting end of the temperature and pressure detecting piece.
  7. 7. The battery pack according to any one of claims 1-4, wherein the material of the separator (200) comprises aerogel or foam.
  8. 8. The battery pack according to any one of claims 1 to 4, further comprising a buzzer provided at an outer periphery of the case; The buzzer is electrically connected with the control piece and used for sending out alarm information.
  9. 9. The battery pack according to any one of claims 1 to 4, wherein the temperature-pressure detecting member includes a temperature sensor and a pressure sensor; and/or, the temperature and pressure detection piece comprises a temperature and pressure compound sensor.
  10. 10. A powered device comprising a battery pack according to any one of claims 1-9.

Description

Battery pack and electric equipment Technical Field The application relates to the technical field of batteries, in particular to a battery pack and electric equipment. Background After thermal runaway occurs in the cells in the battery pack, the temperature and pressure of the battery pack change. Accurately identifying changes in temperature and pressure is critical to preventing and managing thermal runaway events. In the related art, a temperature sensor, a pressure sensor, and a controller are provided in a battery pack. The controller acquires signals of the temperature sensor and the pressure sensor in real time. When the battery core explosion-proof valve is opened, the temperature and the pressure in the battery pack change, and the controller recognizes that the temperature and the pressure are abnormal. However, the conventional battery pack has a problem in that the temperature and pressure recognition speed is slow. Disclosure of utility model The application provides a battery pack and electric equipment, which improve the recognition speed of temperature and pressure when a battery Bao Re is out of control and reduce the safety risk caused by thermal runaway. In a first aspect, an embodiment of the present application provides a battery pack, including: a housing formed with a first cavity; The plurality of electric cores are positioned in the first cavity and are sequentially arranged along the first direction; The separator is arranged between the adjacent battery cells; The temperature and pressure detection piece is arranged between the adjacent battery cells; The control piece is electrically connected with the temperature and pressure detection piece and is used for acquiring detection signals of the temperature and pressure detection piece. In some embodiments of the application, the divider is formed with a second cavity. The partition member has an edge region surrounding an outer periphery of a center region and a center region, and the second cavity is provided in the center region. The temperature and pressure detection piece is positioned in the second cavity. In some embodiments of the present application, the cell, the temperature and pressure detecting member, and the separating member are disposed in this order along the first direction. The separator has an edge region and a center region along a plane perpendicular to the first direction, the edge region surrounding the center region. And two ends of the temperature and pressure detection piece are respectively abutted with the central areas of the battery cell and the separation piece. In some embodiments of the present application, a mounting groove is disposed on a side of the separator, which is close to the battery cell, along a plane perpendicular to the first direction, and a notch of the mounting groove faces the battery cell. The partition member has an edge region surrounding a periphery of a center region and a center region along a first direction, and the mounting groove is provided in the center region. The temperature and pressure detecting piece is positioned in the mounting groove. In some embodiments of the application, the battery pack further comprises a transmission member. The separating piece is formed with the connecting chamber, and the both ends of connecting chamber communicate with second cavity, first cavity respectively. The transmission piece is located the connection chamber, and the control is located first cavity. And two ends of the transmission piece are respectively and electrically connected with the temperature and pressure detection piece and the control piece. In some embodiments of the application, the temperature and pressure sensing element has a transmitting end and the control element has a receiving end. The transmitting end of the temperature and pressure detecting piece faces to the receiving end of the control piece, and the receiving end is used for receiving signals transmitted by the transmitting end of the temperature and pressure detecting piece. In some embodiments of the application, the material of the separator comprises aerogel or foam. In some embodiments of the application, the battery pack further comprises a buzzer, and the buzzer is arranged on the periphery of the shell. The buzzer is electrically connected with the control piece and used for sending out alarm information. In some embodiments of the present application, the temperature and pressure sensing element includes a temperature sensor and a pressure sensor. And/or the temperature and pressure detection piece comprises a temperature and pressure compound sensor. In a second aspect, an embodiment of the present application provides a powered device, including a battery pack. The battery pack and the electric equipment provided by the embodiment of the application comprise a shell, a partition piece, a temperature and pressure detection piece, a control piece and a plurality of electric cores. The shell