ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS

1 . An electrochemical apparatus, comprising: an electrode assembly, a packaging film and a first tab, wherein the first tab is electrically connected to the electrode assembly, the packaging film comprises a first packaging film and a second packaging film located at two sides of the first tab respectively, the first packaging film comprises a first sealing zone, the second packaging film comprises a second sealing zone, and the first sealing zone and the second sealing zone are bonded to seal the electrode assembly; wherein

the first sealing zone comprises a first region and a second region, the first region covers a projection of the first tab on the first sealing zone, the second region connects to the first region, and a width of the second region is less than a width of the first region.

2 . The electrochemical apparatus according to claim 1 , wherein the width of the second region is 40%-95% of the width of the first region.

3 . The electrochemical apparatus according to claim 1 , wherein the first packaging film further comprises a first non-sealing zone, the first non-sealing zone comprises a first connecting portion and a second connecting portion, wherein the first connecting portion connects the first sealing zone and the second connecting portion; in a thickness direction of the packaging film, an angle between the first connecting portion and the first sealing zone is greater than 0° and less than or equal to 90°.

4 . The electrochemical apparatus according to claim 3 , wherein the second packaging film further comprises a second non-sealing zone, the second non-sealing zone comprises a third connecting portion and a fourth connecting portion, wherein the third connecting portion connects the second sealing zone and the fourth connecting portion; in the thickness direction of the packaging film, an angle between the third connecting portion and the second sealing zone is greater than 0° and less than or equal to 90°.

5 . The electrochemical apparatus according to claim 4 , wherein the second region and the second sealing zone together form a thickness T 2 (mm) and a distance between the second connecting portion and the fourth connecting portion is D (mm), wherein T 2 <D≤10T 2 .

6 . The electrochemical apparatus according to claim 5 , wherein the first region and the second sealing zone form a thickness T 1 (mm), wherein T 2 <T 1 ≤4T 2 .

7 . The electrochemical apparatus according to claim 1 , wherein a packaging tension between the first sealing zone and the second sealing zone is 1 N/mm-10 N/mm.

8 . The electrochemical apparatus according to claim 1 , wherein the first sealing zone further comprises a third region, the third region connects to the first region, and a width of the third region is less than the width of the first region.

9 . The electrochemical apparatus according to claim 8 , wherein the width of the third region is 40%-95% of the width of the first region.

10 . The electrochemical apparatus according to claim 1 , further comprising a second tab, wherein the second tab is electrically connected to the electrode assembly, the second tab is located on the same side of the electrode assembly as the first tab; and

the first sealing zone further comprises a fourth region, wherein the fourth region covers a projection of the second tab on the first sealing zone, the second region connects to the fourth region, and the width of the second region is less than a width of the fourth region.

11 . The electrochemical apparatus according to claim 1 , further comprising a second tab, wherein the second tab is electrically connected to the electrode assembly, the second tab is located on a different side of the electrode assembly than the first tab; and

the first packaging film further comprises a third sealing zone, wherein the third sealing zone comprises a fifth region and a sixth region, the fifth region covers a projection of the second tab on the third sealing zone, the fifth region connects to the sixth region, and a width of the sixth region is less than a width of the fifth region.

12 . An electronic apparatus, comprising an electrochemical apparatus, the electrochemical apparatus comprising an electrode assembly, a packaging film and a first tab, wherein the first tab is electrically connected to the electrode assembly, the packaging film comprises a first packaging film and a second packaging film located at two sides of the first tab respectively, the first packaging film comprises a first sealing zone, the second packaging film comprises a second sealing zone, and the first sealing zone and the second sealing zone are bonded to seal the electrode assembly; wherein

the first sealing zone comprises a first region and a second region, the first region covers a projection of the first tab on the first sealing zone, the second region connects to the first region, and a width of the second region is less than a width of the first region.

13 . The electronic apparatus according to claim 12 , wherein the width of the second region is 40%-95% of the width of the first region.

14 . The electronic apparatus according to claim 12 , wherein the first packaging film further comprises a first non-sealing zone, the first non-sealing zone comprises a first connecting portion and a second connecting portion, wherein the first connecting portion connects the first sealing zone and the second connecting portion; in a thickness direction of the packaging film, an angle between the first connecting portion and the first sealing zone is greater than 0° and less than or equal to 90°.

15 . The electronic apparatus according to claim 14 , wherein the second packaging film further comprises a second non-sealing zone, the second non-sealing zone comprises a third connecting portion and a fourth connecting portion, wherein the third connecting portion connects the second sealing zone and the fourth connecting portion; in the thickness direction of the packaging film, an angle between the third connecting portion and the second sealing zone is greater than 0° and less than or equal to 90°.

16 . The electronic apparatus according to claim 15 , wherein the second region and the second sealing zone together form a thickness T 2 (mm) and a distance between the second connecting portion and the fourth connecting portion is D (mm), wherein T 2 <D≤10T 2 .

17 . The electronic apparatus according to claim 16 , wherein the first region and the second sealing zone form a thickness T 1 (mm), wherein T 2 <T 1 ≤4T 2 .

18 . The electronic apparatus according to claim 12 , wherein a packaging tension between the first sealing zone and the second sealing zone is 1 N/mm-10 N/mm.

19 . The electronic apparatus according to claim 12 , wherein the electrochemical apparatus further comprises a second tab, wherein the second tab is electrically connected to the electrode assembly, the second tab is located on the same side of the electrode assembly as the first tab; and

the first sealing zone further comprises a fourth region, wherein the fourth region covers a projection of the second tab on the first sealing zone, the second region connects to the fourth region, and the width of the second region is less than a width of the fourth region.

20 . The electronic apparatus according to claim 12 , wherein the electronic apparatus further comprises a second tab, wherein the second tab is electrically connected to the electrode assembly, the second tab is located on a different side of the electrode assembly than the first tab; and

the first packaging film further comprises a third sealing zone, wherein the third sealing zone comprises a fifth region and a sixth region, the fifth region covers a projection of the second tab on the third sealing zone, the fifth region connects to the sixth region, and a width of the sixth region is less than a width of the fifth region.