CN212485496U - Power battery cell tab welding structure - Google Patents
Power battery cell tab welding structure Download PDFInfo
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- CN212485496U CN212485496U CN202021166862.9U CN202021166862U CN212485496U CN 212485496 U CN212485496 U CN 212485496U CN 202021166862 U CN202021166862 U CN 202021166862U CN 212485496 U CN212485496 U CN 212485496U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a be applied to power battery electric core utmost point ear welded structure in power battery technical field, power battery electric core utmost point ear welded structure include electric core (1), electric core (1) on set up electric core utmost point ear (2), set up hole (4) on current-carrying body (3), on electric core utmost point ear (2) are clamped through hole (4) in current-carrying body (3), hole (4) of current-carrying body (3) and the joint gap position welding of electric core utmost point ear (2) form weld joint (5), power battery electric core utmost point ear welded structure, ensure that electric core utmost point ear and current-carrying body welding quality are stable, be convenient for detect the welding and whether exist the flaw to the slight decay also can not influence welding quality in the welding machine appearance power at present, promote the whole quality of power battery.
Description
Technical Field
The utility model belongs to the technical field of power battery, more specifically say, relate to a power battery electricity core utmost point ear welded structure.
Background
Currently, the connection between the power cell and the current carrier has been turned to more automated laser welding by early bolt or nut tightening. In the prior art, after a current carrier basically adopted by laser welding of a power battery and the current carrier is attached to a battery core lug, laser beams penetrate through the front side of the current carrier, and then the current carrier and the battery core lug are welded. The welding mode has very high requirements on the thickness of a current carrier, the power and the stability of the welding machine, and once the short-term attenuation phenomenon of the power of the welding machine occurs, the problem that the service life of the power battery pack is influenced by the insufficient welding and the like during welding can occur.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: to prior art's not enough, provide a simple structure, ensure that electric core utmost point ear and current-carrying fluid welding quality are stable, are convenient for detect the welding and whether have the flaw to power battery electric core utmost point ear welded structure who does not influence welding quality yet to the slight decay of power appears in the welding machine immediately, thereby promote the whole quality of power battery.
To solve the technical problem, the utility model discloses the technical scheme who takes does:
the utility model relates to a power battery core utmost point ear welded structure, including electric core, electric core on set up electric core utmost point ear, set up the hole on the current-carrying body, on the current-carrying body clamped electric core utmost point ear through the hole, the hole of current-carrying body and the joint gap position welding of electric core utmost point ear formed the weld joint.
The battery core lug is arranged to be a structure protruding out of the upper surface of the battery core.
The power battery cell tab welding structure is characterized in that the cell tab of the power battery cell tab welding structure is of a square structure in cross section, and the inner hole of the current carrier is of a square structure in cross section.
The battery core tab is of a square structure in cross section, the inner hole of the current carrier is of a square structure in cross section, and the diameter of the edge of the inner hole is 0.2-0.4 mm larger than that of the battery core tab.
When the current-carrying fluid is clamped on the battery cell pole lug through the inner hole, square gaps are formed between four edges of the inner hole and four edges of the battery cell pole lug.
The position of the gap is set to be a structure for forming a welding seam through laser welding.
Adopt the technical scheme of the utility model, can obtain following beneficial effect:
power battery core utmost point ear welded structure, to the defect among the prior art, improve the connected mode of electric core utmost point ear and current-carrying body for the current-carrying body clamps back on electric core utmost point ear through the hole, forms the gap position between the two, and the back welds along the gap position, forms the weld joint, realizes the reliable connection of electric core utmost point ear and current-carrying body. By the aid of the connecting mode, contact welding of the electric core and the edge of the current carrier is reliably achieved, laser energy loss caused by laser beams penetrating through the current carrier is avoided, welding quality is not affected even if the power of a welding machine is slightly attenuated, welding flaws can be directly observed on a welding surface, and repairing is facilitated. Power battery electricity core utmost point ear welded structure, ensure that electricity core utmost point ear and current-carrying fluid welding quality are stable, be convenient for detect the welding and whether have the flaw to at the slight decay of welding machine appearance power can not influence welding quality yet, promote the whole quality of power battery.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
fig. 1 is a schematic structural view of a power battery cell tab welding structure of the present invention when no current carrier is connected;
fig. 2 is a schematic structural view of the power battery core tab welding structure of the present invention when connecting a current carrier;
in the drawings, the reference numbers are respectively: 1. an electric core; 2. a battery core tab; 3. a carrier fluid; 4. an inner bore; 5. and (6) welding the seam.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein the embodiments of the present invention are described in detail with reference to the accompanying drawings, for example, the shapes, structures, mutual positions and connection relations of the components, the functions and operation principles of the components, and the like:
as shown in fig. 1 and fig. 2, the utility model relates to a power battery core utmost point ear welded structure, including electric core 1, electric core 1 on set up electric core utmost point ear 2, set up hole 4 on the current carrier 3, on electric core utmost point ear 2 was clamped through hole 4 to current carrier 3, the hole 4 of current carrier 3 and the joint gap position welding of electric core utmost point ear 2 formed weld joint 5. Above-mentioned structure is to the defect among the prior art, improves the connected mode of electric core utmost point ear and current-carrying body for current-carrying body 3 clamps through hole 4 and adorns on electric core utmost point ear 2 back, forms the gap position between the two, then welds along the gap position, forms the welding seam, realizes electric core utmost point ear and the reliable connection of current-carrying body. By the connection, the contact welding of the electric core and the edge of the current carrier is reliably realized, the laser energy loss part caused by the fact that a laser beam penetrates through the current carrier is avoided, even if the power of a welding machine is slightly attenuated, the welding quality is not influenced, the problem of serious attenuation of the welding power is effectively avoided, welding flaws can be directly observed on a welding surface, and repairing is facilitated. Power battery core utmost point ear welded structure, simple structure ensures that electric core utmost point ear and current-carrying fluid welding quality are stable, is convenient for detect the welding and whether has the flaw to at the slight decay of welding machine appearance power can not influence welding quality yet, thereby promotes the whole quality of power battery.
The battery core tab 2 is arranged to protrude out of the upper surface of the battery core 1. The power battery core lug welding structure is characterized in that the core lug 2 is of a square structure in section, and the inner hole 4 of the current carrier 3 is of a square structure in section. Above-mentioned structure, the shape and the size of hole cooperate with the shape and the size of electric core utmost point ear for both can enough realize reliably clamping, have gap portion again, are convenient for weld gap portion, form the welding seam, realize reliably connecting.
The battery core tab 2 is of a square structure in cross section, the inner hole 4 of the current carrier 3 is of a square structure in cross section, and the diameter of the side of the inner hole 4 is 0.2-0.4 mm larger than that of the side of the battery core tab 2. Above-mentioned structure carries out further injecing to the shape of hole and electric core utmost point ear and size relation each other, and like this, both joints are reliable to be convenient for form the weld, weld thickness is also in the settlement range simultaneously, and the welding is convenient.
When the current-carrying fluid 3 is clamped on the battery cell lug 2 through the inner hole 4, a square gap is formed between four edges of the inner hole 4 and four edges of the battery cell lug 2. The slit positions are arranged in a structure in which the weld joints 5 are formed by laser welding. Above-mentioned structure, through laser welding convenient welding.
Power battery core utmost point ear welded structure, to the defect among the prior art, improve the connected mode of electric core utmost point ear and current-carrying body for the current-carrying body clamps back on electric core utmost point ear through the hole, forms the gap position between the two, and the back welds along the gap position, forms the weld joint, realizes the reliable connection of electric core utmost point ear and current-carrying body. By the aid of the connecting mode, contact welding of the electric core and the edge of the current carrier is reliably achieved, laser energy loss caused by laser beams penetrating through the current carrier is avoided, welding quality is not affected even if the power of a welding machine is slightly attenuated, welding flaws can be directly observed on a welding surface, and repairing is facilitated. Power battery electricity core utmost point ear welded structure, ensure that electricity core utmost point ear and current-carrying fluid welding quality are stable, be convenient for detect the welding and whether have the flaw to at the slight decay of welding machine appearance power can not influence welding quality yet, promote the whole quality of power battery.
The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and the present invention can be implemented in various ways without modification, and the present invention is not limited by the above embodiments.
Claims (6)
1. The utility model provides a power battery electricity core utmost point ear welded structure which characterized in that: including electric core (1), electric core (1) on set up electric core utmost point ear (2), set up hole (4) on current-carrying body (3), on current-carrying body (3) clamped electric core utmost point ear (2) through hole (4), the hole (4) of current-carrying body (3) and the joint gap position welding of electric core utmost point ear (2) form weld joint (5).
2. The power battery cell tab welding structure of claim 1, characterized in that: the battery core tab (2) is arranged to protrude out of the upper surface of the battery core (1).
3. The power battery cell tab welding structure according to claim 1 or 2, characterized in that: the power battery core lug welding structure is characterized in that a battery core lug (2) is of a square structure with a cross section, and an inner hole (4) of a current carrier (3) is of a square structure with a cross section.
4. The power battery cell tab welding structure of claim 3, characterized in that: the battery core tab (2) is of a square structure with a cross section, the inner hole (4) of the current carrier (3) is of a square structure with a cross section, and the diameter of the edge of the inner hole (4) is 0.2-0.4 mm larger than that of the battery core tab (2).
5. The power battery cell tab welding structure of claim 3, characterized in that: when the current-carrying bodies (3) are clamped on the battery cell pole lugs (2) through the inner holes (4), square gaps are formed between four edges of the inner holes (4) and four edges of the battery cell pole lugs (2).
6. The power battery cell tab welding structure of claim 5, wherein: the position of the gap is set to be a structure for forming a welding seam (5) through laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021166862.9U CN212485496U (en) | 2020-06-22 | 2020-06-22 | Power battery cell tab welding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021166862.9U CN212485496U (en) | 2020-06-22 | 2020-06-22 | Power battery cell tab welding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212485496U true CN212485496U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021166862.9U Active CN212485496U (en) | 2020-06-22 | 2020-06-22 | Power battery cell tab welding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212485496U (en) |
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2020
- 2020-06-22 CN CN202021166862.9U patent/CN212485496U/en active Active
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