US-20260128451-A1 - BATTERY PACK WITH MULTIPLE CONTACT POINTS FOR POSITIVE AND NEGATIVE TERMINALS

US20260128451A1US 20260128451 A1US20260128451 A1US 20260128451A1US-20260128451-A1

Abstract

The present application relates to the technical field of new energy batteries, and in particular to a battery pack with multiple contact points for positive and negative terminals, which includes a battery pack housing, chutes are defined on two side walls of the battery pack housing, battery-side contact elements are located in the chutes, ribs for insertion into the chutes are arranged on a device housing of a charging and discharging device, and tool-side contact elements for cooperating with the battery-side contact elements are arranged on the ribs.

Inventors

Hepeng Zhang
LEILEI LIU
Zhongsheng XU

Assignees

ZHEJIANG UBP NEW ENERGY TECH CO.,LTD

Dates

Publication Date: 20260507
Application Date: 20251218
Priority Date: 20241101

Claims (8)

1 . A battery pack with multiple contact points for positive and negative terminals, comprising a battery pack housing and battery-side contact elements, chutes are defined on two side walls of the battery pack housing, and the battery-side contact elements are located in the chutes.
2 . The battery pack with multiple contact points for positive and negative terminals according to claim 1 , wherein ribs for insertion into the chutes are arranged on a device housing of a charging and discharging device, and tool-side contact elements for cooperating with the battery-side contact elements are arranged on the ribs.
3 . The battery pack with multiple contact points for positive and negative terminals according to claim 2 , wherein a printed circuit board (PCB) for mounting the battery-side contact elements is arranged in the battery pack housing, the battery-side contact elements comprise positive terminals and negative terminals symmetrically arranged on two sides of the PCB, and a plurality of contact points for abutting against the tool-side contact elements are arranged on both the positive terminals and the negative terminals.
4 . The battery pack with multiple contact points for positive and negative terminals according to claim 3 , wherein the positive terminals and the negative terminals are both vertically fixedly connected to the PCB, each of the plurality of contact points is arranged at intervals in a length direction of the positive terminals and the negative terminals, and each of the plurality of contact points is arranged toward an outer side of the battery pack housing; a plurality of terminal slots are respectively defined at two sides of the battery pack housing on opposite inner walls of the chutes, the plurality of terminal slots are arranged in one-to-one correspondence with each of the plurality of contact points and all communicate with an interior of the battery pack housing, and each of the plurality of contact points on the positive terminals and the negative terminals extends and protrudes from each of the plurality of terminal slots; and the tool-side contact elements are respectively arranged in a length direction of the ribs and respectively abut against each of the plurality of contact points on the positive terminals and the negative terminals.
5 . The battery pack with multiple contact points for positive and negative terminals according to claim 4 , wherein the ribs are defined with mounting slots for embedding the tool-side contact elements, and a side of the tool-side contact elements close to the positive terminals or the negative terminals is flush with the ribs for abutting against each of the plurality of contact points on the positive terminals or the negative terminals.
6 . The battery pack with multiple contact points for positive and negative terminals according to claim 3 , wherein the positive terminals and the negative terminals are both arranged in a flat manner and fixedly connected to the PCB, each of the plurality of contact points is arranged at intervals in a length direction of the positive terminals and the negative terminals, and the plurality of contact points on the positive terminals and the negative terminals are all arranged toward one side of the device housing; a plurality of terminal slots communicating with an interior of the battery pack housing are respectively defined at two sides of the battery pack housing with in the chutes, each of the plurality of terminal slots is arranged in one-to-one correspondence with each of the plurality of contact points, and each of the plurality of contact points on the positive terminals and the negative terminals extends and protrudes from each of the plurality of terminal slots; and the tool-side contact elements are respectively arranged in a length direction of the ribs and respectively abut against each of the plurality of contact points on the positive terminals and the negative terminals.
7 . The battery pack with multiple contact points for positive and negative terminals according to claim 6 , wherein the ribs are defined with mounting slots for mounting the tool-side contact elements on a side of the ribs close to the battery pack housing.
8 . The battery pack with multiple contact points for positive and negative terminals according to claim 3 , wherein the PCB is provided with a signal terminal, and the battery pack housing is defined with a through hole for the signal terminal to extend; and the device housing is provided with an identification insert for cooperating with the signal terminal.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a continuation application of PCT application No. PCT/CN2025/129839, filed on October 24, 2025, which claims priority to Chinese patent applications No. 202411550206.1 and No. 202422669757.1, both filed on November 1, 2024. The entireties of PCT application No. PCT/CN2025/129839 and Chinese patent applications No. 202411550206.1 and No. 202422669757.1 are hereby incorporated by reference herein and made a part of this specification. TECHNICAL FIELD The present application relates to the technical field of new energy batteries, and particularly relates to a battery pack with multiple contact points for positive and negative terminals. BACKGROUND ART The energy storage density of lithium batteries can reach 460-600 Wh/kg, which is approximately 6-7 times that of traditional lead-acid batteries. Under the same weight or volume, lithium batteries can store more energy. The self-discharge rate of lithium batteries is low, and they can maintain a high level of power even when not used for a long time. Meanwhile, lithium battery supports fast charging, which can greatly reduce charging time and improve usage efficiency. This feature enables lithium battery to have broad application prospects in fields such as electric vehicles and portable devices. In related technologies, the housing of the charging and discharging device (hereinafter referred to as a device housing) is provided with tool-side contact elements for connecting with the battery pack, and the housing of the battery pack (hereinafter referred to as a battery pack housing) is provided with battery-side contact elements on the top side for cooperating with the tool-side contact elements. When the battery pack is connected to the charging and discharging device, the tool-side contact elements are inserted into the battery-side contact elements to form a closed circuit, thereby realizing charging/discharging of the battery pack. Regarding the above related technologies, since the battery-side contact elements of the battery pack are arranged on the top side of the outer shell, such appearance limitations and structural limitations result in the tool-side contact elements on the device housing being in a state of single-point contact with the female pole pieces on the battery pack housing. In the case of a small contact area, on the one hand, the battery pack may not be able to match high-power charging and discharging devices, and on the other hand, the charging and discharging stability of the battery pack is poor. SUMMARY In order to improve the problem of small contact area between the contact pieces on the charging and discharging device and the pole pieces and signal terminals on the battery pack, and improve the power supply power and power supply stability of the battery pack, the present application provides a battery pack with multiple contact points for positive and negative terminals. The battery pack with multiple contact points for positive and negative terminals provided by the present application adopts the following technical solutions: a battery pack with multiple contact points for positive and negative terminals, which includes a battery pack housing and battery-side contact elements, chutes are defined on two side walls of the battery pack housing, and the battery-side contact elements are located in the chutes. By adopting the above technical solution, since the battery-side contact elements are located in the chutes, when the tool-side contact elements of the charging and discharging device are connected to the battery pack, multiple-point contact can be formed along the direction of the chutes instead of single-point contact, thereby increasing the contact area, which helps to improve current transmission efficiency and increase the power supply power of the battery pack. A larger contact area means more stable current transmission, reducing voltage fluctuations and power loss caused by poor contact, making the battery pack more stable during charging and discharging, and prolonging the service life of the battery pack and the charging and discharging device. The traditional single-point contact method cannot withstand the high current brought by high-power charging and discharging devices, while multiple-point contact can effectively disperse the current, improve the compatibility of the battery pack, enable the battery pack to be applicable to a wider range of charging and discharging devices, and improve its versatility and practicability. Further, ribs for insertion into the chutes are arranged on a device housing of a charging and discharging device, and tool-side contact elements for cooperating with the battery-side contact elements are arranged on the ribs. By adopting the above technical solution, the insertion arrangement of the ribs and the chutes makes the connection process between the charging and discharging device and the battery pack more simple and