Manufacturing method of battery and battery manufacturing system
地域：
Toyota
摘要
A manufacturing method includes the steps of: preparing a battery case having an opening; fabricating an assembly by inserting a wound electrode body and a lid which includes a terminal connected to the wound electrode body and which closes the opening into the battery case; sandwiching the battery case by a pressing jig in a state where the opening faces downward to close a gap between the battery case and the lid; disposing the assembly so that the terminal faces upward by inverting the assembly in a state where the battery case is sandwiched by the pressing jig; and welding the lid and the battery case to each other in a state where the terminal faces upward and the battery case is sandwiched by the pressing jig.
說明書
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
This is a divisional of U.S. application Ser. No. 16/373,011 filed on Apr. 2, 2019, which claims priority on the basis of Japanese Patent Application No. 2018-078635 filed in Japan on Apr. 16, 2018, the entire contents of which are incorporated herein by reference.
The present invention relates to a manufacturing method of a battery and to a battery manufacturing system.
In recent years, lithium secondary batteries, nickel hydride batteries, and sealed batteries of other types are growing in importance as vehicle-mounted power supplies of electrical vehicles (EVs), hybrid vehicles (HVs), plug-in hybrid vehicles (PHVs), and the like and as power supplies for personal computers, mobile phones, and the like. In particular, sealed batteries constituting lithium-ion secondary batteries which are lightweight and which are capable of producing high energy density are being preferably used as a high-output power supply to be mounted to a vehicle and the like.
權(quán)利要求
What is claimed is:1. A battery manufacturing system, comprising:a case holding jig which includes a case main body and a pressing jig provided in the case main body, wherein the case main body has an insertion hole into which an assembly is to be inserted, the assembly includes a battery case having an opening, a battery component housed in the battery case, and a lid having a terminal connected to the battery component and closing the opening, and wherein the pressing jig is configured to sandwich the battery case in a state where the opening faces downward to close a gap between the battery case and the lid, the case holding jig being configured so as to be capable of holding the assembly; an assembling device which assembles the assembly to the case holding jig in a state where the opening faces downward; a first inverting device which disposes the assembly so that the terminal faces upward by inverting the assembly in a state where the battery case is sandwiched by the pressing jig; and a welding device which welds the lid and the battery case to each other in a state where the terminal faces upward and the battery case is sandwiched by the pressing jig. 2. The battery manufacturing system according to claim 1 , further comprising:an extracting device which extracts the assembly after completion of welding of the lid and the battery case to each other from the case holding jig; and a second inverting device which inverts the case holding jig from which the assembly has been extracted and disposes the case holding jig so that the insertion hole faces downward, wherein the case holding jig is configured so as to be repetitively movable between at least the assembling device, the first inverting device, the welding device, the extracting device, and the second inverting device in this order. 3. The battery manufacturing system according to claim 2 , further comprising a cleaning device which is disposed on a downstream side of the second inverting device and on an upstream side of the assembling device, which is positioned below the case holding jig, and which cleans a periphery of the insertion hole in the case holding jig. 4. The battery manufacturing system according to claim 1 , whereinthe lid is configured such that a cap having a first magnetic body is attachable thereto and an inlet for introducing a nonaqueous electrolyte into the battery case is formed therein, the pressing jig is provided with a second magnetic body which imparts a magnetic force to the first magnetic body and which holds the cap at a prescribed position, and the battery manufacturing system comprises a cap attaching device which is disposed on an upstream side of the first inverting device and which attaches the cap to the inlet. 5. The battery manufacturing system according to claim 1 , whereinthe battery case has a bottom wall which opposes the lid, a pair of first walls which are connected to the bottom wall and which oppose each other, and a pair of second walls which are connected to the bottom wall and which oppose each other, the second walls having a smaller area than the first walls, the opening is formed in a rectangular shape, the battery case and the pressing jig are made of metallic materials, and the case holding jig includes a pair of first holding jigs which are provided in the case main body, which are made of a resin material, and which press the first walls and hold the battery case when the assembly is inserted into the case main body and a pair of second holding jigs which are provided in the case main body, which are made of a resin material, and which press the second walls and hold the battery case when the assembly is inserted into the case main body. 6. The battery manufacturing system according to claim 5 , wherein the case holding jig includes a first biasing member which biases the first holding jigs toward the first walls of the battery case and a second biasing member which biases the second holding jigs toward the second walls of the battery case. 7. The battery manufacturing system according to claim 6 , whereinthe first biasing member has a first upper biasing member which biases the first holding jigs toward the first walls of the battery case and a first lower biasing member which is disposed below the first upper biasing member and which biases the first holding jigs toward the first walls of the battery case, and the second biasing member has a second upper biasing member which biases the second holding jigs toward the second walls of the battery case and a second lower biasing member which is disposed below the second upper biasing member and which biases the second holding jigs toward the second walls of the battery case. 8. The battery manufacturing system according to claim 5 , whereinthe case main body includes an opposing wall which opposes the insertion hole, a first inclined surface which approaches the first walls of the assembly toward the opposing wall from the insertion hole in a state where the assembly is inserted into the case main body is formed in a tip portion of the first holding jigs on a side of the insertion hole, and a second inclined surface which approaches the second walls of the assembly toward the opposing wall from the insertion hole in a state where the assembly is inserted into the case main body is formed in a tip portion of the second holding jigs on a side of the insertion hole. 9. The battery manufacturing system according to claim 5 , wherein the pressing jig includes a pair of first pressing jigs which press the first walls of the battery case and which sandwich the battery case when the battery case is held by the first holding jigs and the second holding jigs, and a pair of second pressing jigs which press the second walls of the battery case and which sandwich the battery case when the battery case is held by the first holding jigs and the second holding jigs. 10. The battery manufacturing system according to claim 9 , whereinthe first pressing jigs include a fixing jig which is fixed to the case main body and a first movable jig which is configured so as to be movable with respect to the case main body and approachable to and separable from the fixing jig, the second pressing jigs include a second movable jig and a third movable jig which are configured so as to be movable with respect to the case main body, the second movable jig is configured so as to be approachable to and separable from the third movable jig, and the third movable jig is configured so as to be approachable to and separable from the second movable jig. 11. The battery manufacturing system according to claim 10 , whereinthe case holding jig includes a first linking mechanism which operates the first movable jig, a second linking mechanism which operates the second movable jig, and a third linking mechanism which operates the third movable jig, and the battery manufacturing system comprises: a first pressing portion which presses the first linking mechanism and which moves the first movable jig in a direction in which the first movable jig separates from the fixing jig; a second pressing portion which presses the second linking mechanism and which moves the second movable jig in a direction in which the second movable jig separates from the third movable jig; and a third pressing portion which presses the third linking mechanism and which moves the third movable jig in a direction in which the third movable jig separates from the second movable jig.
意見反饋
使用該功能遇到問題