Electrical heating device

2:

• The rechargeable electrical heating device (1) according to claim 1,
• wherein the flexible heat generator (1a) comprises:
• a second conductive line (19) arranged on an opposite side of the first flexible substrate layer (11) relative to the first conductive line (12), wherein the second conductive line (19) comprises a second positive line (191) and a second negative line (192),
• a second heat generating line (16) arranged on the first flexible substrate layer (11) and covering a portion of the second conductive line (19),
• a third flexible substrate layer (17) arranged on the first flexible substrate layer (11) and covering the second conductive line (19) and the second heat generating line (16), wherein the third flexible substrate layer (17) is bonded to the first flexible substrate layer (11) by means of a hot-pressing process, and
• a second connector (18) arranged between the first flexible substrate layer (11) and the third flexible substrate layer (17) and electrically connected to the second conductive line (19),
• wherein the second positive line (191) and the second negative line (192) are not directly connected to each other, and
• wherein the second positive line (191) is electrically connected to the second negative line (192) by means of the second heat generating line (16).

3:

• The rechargeable electrical heating device (1) according to claim 2, wherein:
• the first positive line (121) and the first negative line (122) are arranged in a comb shape each comprising a main portion and a plurality of branch portions,
• the main portion of the first positive line (121) and the main portion of the first negative line (122) are parallel to each other,
• the branch portions of the first positive line (121) and the branch portions of the first negative line (122) are arranged alternately with each other, and
• the first heat generating line (13) comprises a plurality of linear heat generating lines parallel to each other,
• each linear heat generating line covers at least one of the branch portions of the first positive line (121) and one of the branch portions of the first negative line (122).

4:

• The rechargeable electrical heating device (1) according to claim 3, wherein:
• the first connector (15) comprises a first positive terminal and a first negative terminal,
• the main portion of the first positive line (121) is connected to the positive terminal of the first connector (15), and
• the main portion of the first negative line (122) is connected to the negative terminal of the first connector (15).

5:

• The rechargeable electrical heating device (1) according to claim 2, wherein:
• the second positive line (191) and the second negative line (192) each comprises a straight section, the straight sections of the second positive line (191) and the second negative line (192) are parallel to each other,
• the second heat generating line (16) comprises a plurality of linear heat generating lines parallel to each other,
• each linear heat generating line covers a portion of the straight section of the second positive line (191) and a portion of the straight section of the second negative line (192).

11:

• A rechargeable electrical heating device (1), comprising:
• a flexible heat generator (1a), and
• a power source (1b) connected to the flexible heat generator (1a),
• wherein the flexible heat generator (1a) comprises:
• a first flexible substrate layer (11),
• a first positive line (121) arranged on the first flexible substrate layer (11),
• a first heat generating line (13) arranged on the first positive line (121) and covering a portion of the first positive line (121),
• a first negative line (122) arranged on the first flexible substrate layer (11) and covering a portion of the first heat generating line (13),
• a second flexible substrate layer (14) covering the first positive line (121), the first heat generating line (13) and the first negative line (122), wherein the second flexible substrate layer (14) is bonded to the first flexible substrate layer (11) by means of a hot-pressing process, and
• a first connector (15) arranged between the first flexible substrate layer (11) and the second flexible substrate layer (14) and electrically connected to the first positive line (121) and the first negative line (122),
• wherein the first positive line (121) and the first negative line (122) are not directly connected to each other, and
• wherein the first positive line (121) is electrically connected to the first negative line (122) by means of the first heat generating line (13).