CN-115312986-B - Soft package lithium battery formation tab contact device and formation equipment constructed by same

Abstract

The invention discloses a flexible-package lithium battery formation tab contact device which comprises a mounting seat, a linkage tab contact mechanism and a formation device, wherein the mounting seat comprises an upper mounting seat and a lower mounting seat which are oppositely arranged, the linkage tab contact mechanism comprises tab contact structures and tab compression structures which are oppositely and parallelly arranged, the tab contact structures and the tab compression structures are respectively arranged on two sides of the mounting seat, two end parts of the tab contact structures are fixedly connected with the upper mounting seat and the lower mounting seat respectively, two end parts of the tab compression structures are connected with the upper mounting seat and the lower mounting seat respectively in a sliding mode, the driving mechanism is arranged on the mounting seat, and the telescopic end of the driving mechanism is connected with the tab compression mechanism. The invention has the advantages that the tab contact plate and the battery tab are pressed together when folded, the conductive stability and the charge and discharge effect are ensured, the thickness is reduced when the tab contact plate is unfolded in a staggered manner, the tab contact device is not damaged, and the air compression condition is met.

Inventors

• GUO KAIHUA
• ZHOU BINGBIN
• CAO JI
• CAO ZHENG

Assignees

• 浙江杭可科技股份有限公司

Dates

Publication Date

20260505

Application Date

20220728

Claims (8)

1. 1. The utility model provides a soft packet of lithium cell formation utmost point ear contact device which characterized in that includes: The mounting seat comprises an upper mounting seat and a lower mounting seat which are oppositely arranged; The pole ear contact structure comprises pole ear contact structures and pole ear compression structures which are arranged oppositely and in parallel, wherein the pole ear contact structures and the pole ear compression structures are respectively arranged at two sides of the mounting seat, two ends of each pole ear contact structure are respectively fixedly connected with the upper mounting seat and the lower mounting seat, two ends of each pole ear compression structure are respectively connected with the upper mounting seat and the lower mounting seat in a sliding manner, and the pole ear contact structures and the pole ear compression structures enable the pole ear contact structures to move between an unfolding state and a folding state through sliding movement of the pole ear contact structures relative to each other; The driving mechanism is arranged on the mounting seat, and the telescopic end of the driving mechanism is connected with the lug pressing structure and is used for driving the linkage type lug contact mechanism to switch between a folded state and an unfolded state; The pole lug pressing structure comprises a middle heightening mechanism and a pole lug pressing plate mechanism which are connected with each other in a sliding manner, and two end parts of the middle heightening mechanism are slidably arranged on the upper mounting seat and the lower mounting seat; the pole ear pressing plate mechanism is slidably arranged on the middle heightening mechanism, the middle heightening mechanism and the pole ear pressing plate mechanism can slide along the direction parallel to the pole ear contact structure, and the pole ear contact structure, the middle heightening mechanism and the pole ear pressing structure move relative to each other to enable the linkage pole ear contact mechanism to move between an unfolding state and a folding state, wherein the folding state is an overlapping state of the pole ear contact mechanism, the middle heightening mechanism and the pole ear pressing plate mechanism in the thickness direction of the pole ear contact plate, and the unfolding state is a dislocation state of the pole ear contact mechanism, the middle heightening mechanism and the pole ear pressing plate mechanism in the parallel direction of the pole ear contact plate; The upper surface and the lower surface of the upper mounting seat are provided with a first upper sliding groove structure and a first lower sliding groove structure, the upper surface and the lower surface of the lower mounting seat are provided with a second upper sliding groove structure and a second lower sliding groove structure, and the first upper sliding groove structure, the first lower sliding groove structure, the second upper sliding groove structure and the second lower sliding groove structure are all arranged along the horizontal direction parallel to the lug contact structure.
2. 2. The soft package lithium battery formation tab contact device of claim 1, wherein: the bottom plate is fixedly arranged on the first sides of the upper mounting seat and the lower mounting seat; The lug contact plate is opposite to the bottom plate in parallel, and a lug contact area which can be contacted with a battery lug is arranged on the lug contact plate; The elastic element is arranged between the lug contact plate and the bottom plate and is connected with the bottom plate; The limiting rod is slidably arranged in the mounting seat and the bottom plate in a penetrating mode, and the tail portion of the limiting rod is connected with the lug contact plate.
3. 3. The flexible package lithium battery formation tab contact device of claim 2, wherein the middle heightening mechanism comprises an upper sliding block, a lower sliding block, a middle backing plate, a limit step bar and a spring; the middle backing plate is provided with a first side face and a second side face which are opposite, and the two ends of the first side face are respectively provided with the upper sliding block and the lower sliding block; The upper sliding block is connected with the top of the upper mounting seat in a sliding manner; the lower sliding block is connected with the bottom of the lower mounting seat in a sliding manner; The spring is sleeved on the limiting step rod, the limiting step rod is arranged in the corresponding upper sliding block or lower sliding block in a penetrating mode, the tail portion of the limiting step rod is connected with the end portion of the middle backing plate, and the head portion of the limiting step rod is inserted into the corresponding upper sliding block or lower sliding block.
4. 4. The device for forming a tab of a soft package lithium battery of claim 3, wherein the upper slider and the lower slider are mirror-symmetrical structures and are symmetrically disposed at two ends of the first side of the middle pad, respectively.
5. 5. The flexible lithium battery formation tab contact device of claim 4, wherein the upper and lower end surfaces of the upper slider are respectively provided with a first upper sliding rail structure and a first lower sliding rail structure which are parallel to each other, the first upper sliding rail structure is in sliding fit with the upper part of the tab pressing plate mechanism, and the first lower sliding rail structure is in sliding fit with the first lower sliding groove structure.
6. 6. The flexible lithium battery formation tab contact device of claim 5, wherein the upper end surface and the lower end surface of the lower slider are respectively provided with a second upper sliding rail structure and a second lower sliding rail structure which are parallel to each other, the second upper sliding rail structure is in sliding fit with the second lower sliding rail structure, and the second lower sliding rail structure is in sliding fit with the lower part of the tab pressing plate mechanism.
7. 7. The soft pack lithium battery formation tab contact device of claim 6, wherein: the lug pressing plate mechanism comprises a pressing plate, an upper sliding head, a lower sliding head, a long limit step rod and a long spring; the pressing plate is provided with a first surface and a second surface which are opposite, and the upper end and the lower end of the first surface are respectively provided with the upper sliding head and the lower sliding head; The bottom of the upper sliding head is provided with a first sliding groove structure which is in sliding fit with the first upper sliding rail structure; the top of the lower sliding head is provided with a second sliding groove structure which is in sliding fit with the second lower sliding rail structure; The long limiting step rod is sleeved with the long spring, the tail of the long limiting step rod is connected with the end part of the pressing plate, and the head of the long limiting step rod is inserted into the corresponding upper sliding head or lower sliding head.
8. 8. A formation device constructed by the soft-package lithium battery formation tab contact device according to claim 7 is characterized by comprising at least one pair of formation clamping plate assemblies which are parallel and arranged at intervals, wherein each formation clamping plate assembly comprises a sinking plate and two soft-package lithium battery formation tab contact devices arranged on the sinking plate, and the two soft-package lithium battery formation tab contact devices are arranged at two opposite end parts of the sinking plate in parallel through corresponding mounting seats and are used for clamping tabs of batteries together.

Description

Soft package lithium battery formation tab contact device and formation equipment constructed by same Technical Field The invention relates to a soft-package lithium battery formation tab contact device and a formation device constructed by the same, in particular to an unfolding and folding soft-package lithium battery formation tab contact device and formation device. Background In the manufacturing process of lithium batteries, formation is a very critical process for improving the electrical performance of lithium batteries. The formation is a process of activating an active material in the battery by applying a suitable low current to both ends of the electrode of the primary molded battery. The soft package lithium battery is generally required to be in a high-temperature and high-pressure state in the formation process, in the prior art, the soft package lithium battery is generally placed between the sinking plates by heating the sinking plates, and a plurality of sinking plates are compressed by a motor or an air cylinder, so that the soft package lithium battery between the two sinking plates can be heated and pressurized at the same time, and a gigatab contact mechanism is arranged on one side of the sinking plates, so that the soft package lithium battery is formed by connecting battery tabs with the tab contact mechanism during heating and pressurization, and electrifying. However, in the practical formation process of lithium batteries, in order to improve production efficiency, a situation that no soft package lithium battery exists among a plurality of sinking plates, namely an air compression situation, if no soft package lithium battery exists among the sinking plates, a tab contact device is damaged when the sinking plates of the existing formation equipment are compressed, and air compression is not supported. Disclosure of Invention The invention aims to provide a soft-package lithium battery formation tab contact device and a formation device constructed by the same, and particularly relates to an extensible and foldable soft-package lithium battery formation tab contact device which can ensure the stability of conduction and the charging effect, can meet the air pressure condition of the formation device, and is more beneficial to production automation and production efficiency. The invention relates to a soft package lithium battery formation tab contact device, which is characterized by comprising: The mounting seat comprises an upper mounting seat and a lower mounting seat which are oppositely arranged; The pole lug contact mechanism comprises pole lug contact structures and pole lug compression structures which are oppositely and parallelly arranged, the pole lug contact structures and the pole lug compression structures are respectively arranged on two sides of the mounting seat, wherein two ends of each pole lug contact structure are fixedly connected with the upper mounting seat and the lower mounting seat respectively, two ends of each pole lug compression structure are connected with the upper mounting seat and the lower mounting seat respectively in a sliding mode, and the pole lug contact structures and the pole lug compression structures move between an unfolding state and a folding state through sliding movement of the pole lug contact structures relative to each other; And the driving mechanism is arranged on the mounting seat, and the telescopic end of the driving mechanism is connected with the lug pressing plate mechanism and is used for driving the linkage type lug contact mechanism to switch between a folded state and an unfolded state. The pole ear pressing structure is arranged on the opposite side of the pole ear contact structure and comprises a middle heightening mechanism and a pole ear pressing plate mechanism which are connected in a sliding mode, two ends of the middle heightening mechanism are slidably arranged on the upper mounting seat and the lower mounting seat, the pole ear pressing plate mechanism is slidably arranged on the middle heightening mechanism, the middle heightening mechanism and the pole ear pressing plate mechanism can slide along the direction parallel to the pole ear contact structure, and the pole ear contact structure, the middle heightening mechanism and the pole ear pressing structure can move between an unfolding state and a folding state through sliding motion of the pole ear pressing structure relative to each other, wherein the folding state is an overlapping posture of the pole ear contact mechanism, the middle heightening mechanism and the pole ear pressing plate mechanism in the thickness direction of the pole ear contact plate, and the unfolding state is a dislocation posture of the pole ear contact mechanism, the middle heightening mechanism and the pole ear pressing plate mechanism in the parallel direction of the pole ear contact plate. Preferably, the upper surface and the lower surface of the upper mounting seat are re