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CN-224231798-U - Battery needling device

CN224231798UCN 224231798 UCN224231798 UCN 224231798UCN-224231798-U

Abstract

The application provides a battery needling device. Relates to the technical field of batteries. The battery needling device comprises a base, a needling needle and a first heating piece. The base is provided with a supporting plane for placing a battery, the puncture needle is used for needling the battery, the puncture needle comprises a base body part and a needling part which are connected with each other, a first cavity is formed in the needling part, and the first heating piece is located in the first cavity. According to the battery needling device provided by the embodiment of the application, the first heating element is used for providing heat for the needling part of the needling needle, so that the thermal reaction inside the battery cell can be triggered more effectively by introducing additional heat into the needling part of the needling needle, the response of the battery cell to the needling test is accelerated, more extreme test conditions are simulated, the safety performance of the battery cell under extreme conditions is evaluated more comprehensively, and the service performance of the battery needling device is improved.

Inventors

  • CAO MINGWEI
  • TONG BANG
  • ZHANG CHAO

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 needling device, which comprises a needling machine, characterized by comprising the following steps: A base having a support plane for placing a battery; a lancet for lancing the battery; The lancet comprises a base portion (200) and a lancing portion (100) connected to each other, the lancing portion (100) being formed with a first cavity; -a first heating element (300), said first heating element (300) being located in said first cavity.
  2. 2. The battery needling apparatus of claim 1, wherein the needling section (100) is a thermally conductive member, and the first heating member (300) is in abutment with the inner wall of the needling section (100).
  3. 3. The battery needling apparatus of claim 1, further comprising a connector (400) and a power supply (500); The base body part (200) is provided with a second cavity, the second cavity is communicated with the first cavity, the connecting piece (400) is positioned in the second cavity, and the connecting piece (400) is connected with the first heating piece (300) and the power supply piece (500); The extending direction of the connector (400) is parallel to the extending direction of the base body (200).
  4. 4. The battery lancing device according to claim 1, further comprising a power supply member (500), wherein the power supply member (500) is connected to the base portion (200), and wherein the power supply member (500) is configured to supply power to the lancet.
  5. 5. The battery needling apparatus of any of claims 1-4, further comprising a second heating member (600), wherein the second heating member (600) is sleeved on the outer periphery of the base portion (200), and wherein the second heating member (600) is used for heating the base portion (200).
  6. 6. The battery needling apparatus of claim 5, wherein the heating power of the first heating member (300) is less than the heating power of the second heating member (600).
  7. 7. The battery needling apparatus of claim 5 further comprising a temperature sensing member and a control member, the sensing end of the temperature sensing member being connected to the needling section (100), the temperature sensing member being configured to acquire the temperature of the needling section (100); The temperature detecting member, the first heating member (300) and the second heating member (600) are all electrically connected to the control member.
  8. 8. Battery needling apparatus according to any of claims 1-4, characterized in that the cross section of the needling section (100) is triangular along a direction perpendicular to the extension of the base section (200); the first heating member (300) has a circular or triangular cross section along a direction perpendicular to the extending direction of the base portion (200).
  9. 9. The battery needling apparatus of claim 5 wherein the battery needling apparatus comprises a plurality of needling stations, The first heating element (300) comprises a resistance wire; And/or the second heating element (600) comprises a heating jacket and/or a heating belt.
  10. 10. The battery needling apparatus of any of claims 1-4, further comprising a thermal insulator that is sleeved around the periphery of the base portion (200).

Description

Battery needling device Technical Field The application relates to the technical field of batteries, in particular to a battery needling device. Background The needling test is an important means of assessing the thermal runaway safety of a battery by simulating the penetration of the battery by sharp objects that may be encountered in extreme cases. In the related art, a lancing device includes a base and a lance. In the testing process, the battery core close to the full-power state is penetrated by the puncture needle to trigger the thermal runaway of the battery core, and the dangerous scenes such as the runaway, the fire, the explosion and the like of the battery Bao Re possibly occurring after the collision of the battery are simulated. However, the conventional needling apparatus has a problem of poor use effect. Disclosure of utility model The application provides a battery needling device, which can trigger the thermal reaction inside a battery cell more effectively by introducing extra heat into the needling part of a needling needle, so that the response of the battery cell to needling test is accelerated, more extreme test conditions are simulated, the safety performance of the battery cell under extreme conditions is evaluated more comprehensively, and the service performance of the battery needling device is improved. The embodiment of the application provides a battery needling device, which comprises: the base is provided with a supporting plane which is used for placing the battery; A lancet for lancing the battery; The puncture needle comprises a base body part and a needling part which are connected with each other, and the needling part is formed with a first cavity; the first heating piece is located the first cavity. In some embodiments of the present application, the needling portion is a heat conducting member, and the first heating member abuts against an inner wall of the needling portion. In some embodiments of the application, the battery needling apparatus further includes a connector and a power supply. The base body part is provided with a second cavity, the second cavity is communicated with the first cavity, the connecting piece is positioned in the second cavity and used for connecting the first heating piece and the power supply piece, and the extending direction of the connecting piece is parallel to the extending direction of the base body part. In some embodiments of the application, the battery lancing device further comprises a power supply member, the power supply member being coupled to the base portion, the power supply member being configured to supply power to the lancet. In some embodiments of the application, the battery needling device further comprises a second heating member sleeved on the periphery of the base body, and the second heating member is used for heating the base body. In some embodiments of the application, the heating power of the first heating element is less than the heating power of the second heating element. In some embodiments of the present application, the battery needling device further includes a temperature detecting member and a control member, wherein a detecting end of the temperature detecting member is connected to the needling portion, and the temperature detecting member is used for obtaining a temperature of the needling portion. The temperature detection piece, the first heating piece and the second heating piece are all electrically connected with the control piece. In some embodiments of the application, the cross-section of the needled portion is triangular along a direction perpendicular to the extension of the base portion. The cross section of the first heating element is circular or triangular along the extending direction perpendicular to the base body. In some embodiments of the application, the first heating element comprises a resistive wire and/or the second heating element comprises a heating jacket and/or a heating belt. In some embodiments of the application, the battery needling apparatus further comprises a heat insulating member, wherein the heat insulating member is sleeved on the periphery of the base body. The embodiment of the application provides a battery needling device which comprises a base, a needling needle and a first heating piece. The base is provided with a supporting plane for placing a battery, the puncture needle is used for needling the battery, the puncture needle comprises a base body part and a needling part which are connected with each other, a first cavity is formed in the needling part, and the first heating piece is located in the first cavity. According to the battery needling device provided by the embodiment of the application, the first heating element is used for providing heat for the needling part of the needling needle, so that the thermal reaction inside the battery cell can be triggered more effectively by introducing additional heat into the needling part of the needlin