CN115621646A - Battery and method for manufacturing battery - Google Patents

Battery and method for manufacturing battery Download PDF

Info

Publication number
CN115621646A
CN115621646A CN202210582300.XA CN202210582300A CN115621646A CN 115621646 A CN115621646 A CN 115621646A CN 202210582300 A CN202210582300 A CN 202210582300A CN 115621646 A CN115621646 A CN 115621646A
Authority
CN
China
Prior art keywords
passages
battery
cooling
stacked body
passage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210582300.XA
Other languages
Chinese (zh)
Inventor
野沟文夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of CN115621646A publication Critical patent/CN115621646A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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

Abstract

The invention provides a battery and a method for manufacturing the battery, the battery comprises: a laminate including a plurality of battery cells laminated together; a pair of end plates provided on both sides of the stacked body in the stacking direction; and a cooling plate connected to the pair of end plates, provided in contact with at least a part of the stacked body, and having a plurality of passages formed along the stacking direction. The end plate includes a plurality of communication holes, and causes the coolant to flow through one or more of the plurality of passages through the plurality of communication holes. The plurality of communication holes are respectively communicated with any one of the more than one passages, and the plurality of passages comprise more than two passages which are respectively communicated with each other and have different numbers or sizes.

Description

Battery and method for manufacturing battery
Technical Field
The present disclosure relates to a battery and a method of manufacturing the battery.
Background
For a battery having a laminate including a plurality of stacked battery cells, a technique of cooling the laminate is known. Japanese patent application laid-open No. 2012-248520 describes a battery that can cool a battery cell by a side refrigerant flow path formed in a stacking direction of the battery cell. The side refrigerant flow path is configured to be wider from an inlet port provided at an end of the stacked body toward a predetermined region of the flow path upstream portion, and to be narrower from a predetermined region of the flow path downstream portion toward an outlet port provided at an end of the stacked body. This can suppress an extreme decrease in the temperature at the end of the stacked body, and therefore, the stacked body can be efficiently cooled.
Disclosure of Invention
However, in the conventional technology, the flow rate of the refrigerant in the stacking direction of the battery cells can be adjusted by adjusting the flow path width of the refrigerant flow path, but it is difficult to adjust the flow rate of the refrigerant in the height direction and the width direction of the battery cells. Therefore, a technique capable of easily cooling a desired portion of the battery cell is desired.
The present disclosure has been made to solve the above problems, and can be implemented as the following embodiments.
(1) According to one aspect of the present disclosure, a battery is provided. The battery is provided with: a laminate including a plurality of battery cells laminated together; a pair of end plates provided on both sides of the stacked body in a stacking direction of the stacked body; and a cooling plate connected to the pair of end plates, provided in contact with at least a part of the stacked body, and having a plurality of passages formed along the stacking direction. The end plate includes a plurality of communication holes, and causes a coolant to flow through one or more of the plurality of passages via the plurality of communication holes. The plurality of passages include two or more passages different in number or size from each other in communication holes communicated with each other.
According to this aspect, the flow rate of the coolant flowing through each passage can be set to a desired flow rate simply by changing the number or size of the communication holes. Therefore, a desired portion of the battery cell can be easily cooled.
(2) In the battery of the above aspect, the plurality of passages may include: a first passage communicating with the communication hole; and a second passage not communicating with the communication hole and not allowing the coolant to flow therethrough.
According to this aspect, since the first passage through which the cooling medium flows and the second passage through which the cooling medium does not flow are provided, only a desired portion of the stacked body can be easily cooled.
(3) In the battery of the above aspect, the end plate may include: a plurality of third passages through which the cooling medium flows; and one or more partition walls partitioning the plurality of third passages.
According to this aspect, the rigidity of the end plate can be improved as compared with the case where the partition wall is not provided. Therefore, for example, rigidity can be ensured against expansion of the battery cells in the stacking direction due to charging.
(4) In the battery of the above aspect, at least a part of the end surface of the end plate may be in contact with a surface of the cooling plate facing the stacked body.
According to this aspect, the contact area between the end plate and the cooling plate can be increased as compared with the case where the end face of the end plate does not contact the surface of the cooling plate facing the stacked body. Therefore, for example, the force applied to the end plates due to the expansion of the battery cells in the stacking direction accompanying the charging can be dispersed.
(5) In the battery of the above aspect, the plurality of passages may include: a forward passage through which the cooling medium flows from one end portion to the other end portion of the stacked body; and a reverse passage through which the cooling medium flows from the other end portion toward the one end portion, and an end plate provided at the one end portion includes: a supply hole for supplying the cooling medium flowing into the forward passages of the end plate and the cooling plate; and a discharge hole that discharges the cooling medium flowing out from the reverse path of the cooling plate and the end plate.
According to this aspect, since the supply holes and the discharge holes are provided in the end plate on one end side, the layout of the battery is easier than in the case where the supply holes and the discharge holes are provided in both ends of the end plate.
(6) In the method for manufacturing a battery according to the above aspect, the battery may include a cooling unit that surrounds the stacked body, the cooling unit being configured by two or more cooling plates that are connected to each other in a direction in which the passages are arranged, and the method may include a step of manufacturing the cooling unit by bending one plate-shaped member in which the passages are formed along an extending direction of the passages.
According to this aspect, compared to the case where the cooling unit having a shape that is curved from the beginning is manufactured by extrusion molding, it is possible to manufacture the cooling unit with high accuracy, and therefore, it is possible to suppress a bonding failure with the end plate or the laminated body.
The present disclosure can be implemented in various forms, for example, a battery case including a cooling plate and an end plate.
Drawings
Features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings, in which like reference numerals represent like elements, and wherein:
fig. 1 is a schematic diagram of a battery.
Fig. 2 is an exploded perspective view of the battery.
Fig. 3 is an exploded perspective view of a battery in a second embodiment.
Fig. 4 is an explanatory view showing a schematic configuration of a battery according to a third embodiment.
Fig. 5 is an exploded perspective view of a battery in a third embodiment.
Fig. 6 is an explanatory view showing a schematic configuration of a battery according to the fourth embodiment.
Fig. 7 is an exploded perspective view of a battery in a fourth embodiment.
Fig. 8 is an explanatory view showing a schematic configuration of a battery in the fifth embodiment.
Fig. 9 is an exploded perspective view of a battery of a fifth embodiment.
Fig. 10 is an explanatory view showing a schematic configuration of a battery according to the sixth embodiment.
Fig. 11 is an exploded perspective view of a battery in a sixth embodiment.
Fig. 12 is an explanatory view of a manufacturing process of the cooling unit in the seventh embodiment.
Fig. 13 is a flowchart illustrating an example of a method for manufacturing a battery.
Detailed Description
A. The first embodiment:
fig. 1 is a diagram showing a schematic configuration of a battery 100 according to an embodiment of the present disclosure. Fig. 2 is an exploded perspective view of the battery 100. The battery 100 includes a laminate 10, a pair of end plates 20, and a cooling plate 30. Battery 100 is a stacked battery.
The stacked body 10 is formed by stacking a plurality of battery cells 11. The battery cell 11 is, for example, a secondary battery, such as a nickel-cadmium battery, a nickel-hydrogen battery, or a lithium battery.
The end plates 20 are plate-shaped members provided on both sides of the stacked body 10 in the stacking direction of the stacked body 10. In the present embodiment, the end plate 20 is formed of a body portion 21 and a lid portion 22. The body 21 is open at the top and bottom. More specifically, the main body 21 is a hollow square tube having a substantially rectangular cross section. In the present embodiment, the end plate 20 includes two lid portions 22, and each lid portion 22 is provided so as to cover the opening portion of the body portion 21.
The main body 21 has: a third passage 23 through which a cooling medium flows; a plurality of communication holes 24 communicating with the passages 31 of the cooling plate 30; and an inlet/outlet hole 25 through which a cooling medium is supplied or discharged. The communication hole 24 is provided to communicate with any one of the plurality of passages 31. The end plate 20 causes the coolant supplied to the third passage 23 through the inlet/outlet hole 25 to flow through the passage 31 through the communication hole 24. The end plate 20 discharges the coolant flowing from the passage 31 through the communication hole 24 from the third passage 23 through the inlet/outlet hole 25. The cooling medium is for example water. In the present embodiment, the communication hole 24 is a substantially circular hole. The access hole 25 is a hole into which the cylindrical joint member 50 is fitted.
The cooling plate 30 is a plate-like member connected to the pair of end plates 20 and provided in contact with at least a part of the stacked body 10. The cooling plate 30 is manufactured by extrusion molding of aluminum, for example. The cooling plate 30 has a plurality of passages 31 formed along the stacking direction. The plurality of passages 31 include two or more passages different in the number or size of the communication holes 24 communicated with each other. The number of the communication holes 24 is an integer of 0 or more. The number and size of the communication holes 24 communicating with the passages 31 are determined according to the flow rate of the coolant to flow through the passages 31. In the present embodiment, the plurality of communication holes 24 have the same size, and the number of communication holes 24 communicating with each passage 31 is different from each other.
In the present embodiment, the passage 31 includes: a first passage 31a communicating with the communication hole 24 and through which a coolant flows; and a second passage 31b not communicating with the communication hole 24 and not allowing the cooling medium to flow therethrough. That is, the number of the communication holes 24 communicating with the first passage 31a is 1, and the number of the communication holes 24 communicating with the second passage 31b is 0. In the cooling plates 30 provided on both side surfaces, which are surfaces other than both sides in the stacking direction of the stacked body 10, two passages 31 from the top are first passages 31a, and the lowermost passage 31 is a second passage 31b. This can prevent the lower portion of the stacked body 10 from being excessively cooled.
In the present embodiment, the battery 100 has three cooling plates 30. The cooling plates 30 are provided so as to face both side surfaces and the bottom surface of the stacked body 10 in the stacking direction. The cooling plates 30 are connected to each other in the direction in which the passages 31 are arranged, and a member surrounding the laminated body 10 formed by the three connected cooling plates 30 is also referred to as a cooling unit 40.
According to the battery 100 of the present embodiment described above, the flow rate of the coolant flowing through each passage 31 can be set to a desired flow rate simply by changing the number or size of the communication holes 24. Therefore, a desired portion of the battery cell 11 can be easily cooled. In addition, the manufacturing process of the battery 100 can be simplified compared to a method in which the flow rates flowing in the height direction and the width direction of the battery cells 11 in each passage 31 are adjusted by changing the flow path width of the passage 31.
In addition, the plurality of passages 31 include: a first passage 31a communicating with the communication hole 24; and a second passage 31b not communicating with the communication hole 24 and not allowing the cooling medium to flow therethrough. Therefore, only a desired portion of the laminated body 10 can be easily cooled.
B. Second embodiment:
fig. 3 is an exploded perspective view of a battery 100B in the second embodiment. In the description of the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted. In the present embodiment, the battery 100B is different from the battery 100 in the first embodiment in that the end plate 20B has the partition wall 26, and the other configuration is the same as that in the first embodiment.
In the present embodiment, the main body 21B includes: a plurality of third passages 23 through which a cooling medium flows; and a plurality of partitions 26 partitioning the plurality of third passages 23. The partition 26 partitions the third passage 23 along the stacking direction of the stacked body 10. As shown in fig. 3, the upper portion of the joint member 50 is formed so as not to contact the cover 22, and the plurality of third passages 23 communicate with each other.
In the present embodiment, the rigidity of the end plate 20B can be improved as compared with the case where the partition wall 26 is not provided. Therefore, for example, rigidity can be secured against expansion of the battery cells 11 in the stacking direction due to charging.
C. The third embodiment:
fig. 4 and 5 are explanatory views showing a schematic configuration of a battery 100C according to a third embodiment. In fig. 5, the laminate 10 is omitted for convenience of illustration. In the description of the third embodiment, the same components as those of the second embodiment are denoted by the same reference numerals and the description thereof is omitted. In the present embodiment, the battery 100C is different from the battery 100B in the second embodiment in that the end plate 20C is provided so as to be housed in the cooling unit 40, and the other configuration is the same as that in the second embodiment.
In the present embodiment, the end plate 20C is provided to be housed in the cooling unit 40. More specifically, the end plate 20C is provided such that the end surface of the body portion 21C contacts the surface of the cooling plate 30C facing the stacked body 10. The communication hole 24C is provided in a surface of the body 21C facing the cooling plate 30C.
The cooling plate 30C is provided with flow holes 32 at positions facing the communication holes 24C. More specifically, the flow hole 32 is provided so as to communicate with the first passage 31a, and the flow hole 32 is not provided so as not to communicate with the second passage 31b. Thereby, the coolant flows through the communication hole 24C and the flow hole 32 to the first passage 31 a. The cooling unit 40 has a cover member 41. The cover member 41 is provided to cover an end of the passage 31.
In the present embodiment, the end plate 20C is provided such that the end face of the end plate 20C contacts the surface of the cooling plate 30C facing the stacked body 10. Therefore, the contact area between the end plate 20C and the cooling plate 30C can be increased as compared with the case where the end face of the end plate 20C does not contact the surface of the cooling plate 30C facing the stacked body 10. Therefore, for example, the force applied to the end plate 20C due to the expansion of the battery cells 11 in the stacking direction accompanying the charging can be dispersed.
D. Fourth embodiment:
fig. 6 and 7 are explanatory views showing a schematic configuration of a battery 100D according to a fourth embodiment. In fig. 7, the stacked body 10 is omitted for convenience of illustration. In the description of the fourth embodiment, the same components as those of the third embodiment are denoted by the same reference numerals and the description thereof is omitted. In the present embodiment, a battery 100D is different from the battery 100C in the third embodiment in that a part of the end face of an end plate 20D is in contact with the surface of a cooling plate 30C facing a stacked body 10, and the other configuration is the same as that in the third embodiment.
In the present embodiment, the end plate 20D is provided so that a part thereof is housed in the cooling unit 40. More specifically, the end plate 20D is provided so that a part of the end face of the body portion 21D contacts the surface of the cooling plate 30C facing the stacked body 10. Further, the body portion 21D is formed to cover an end portion of the passage 31. In the present embodiment, the cover member 41 is omitted.
In the present embodiment, the contact area between the end plate 20D and the cooling plate 30C can be increased as compared with the case where the end face of the end plate 20D does not contact the surface of the cooling plate 30C facing the stacked body 10. Therefore, for example, the force applied to the end plate 20D due to the expansion of the battery cell 11 in the stacking direction accompanying the charging can be dispersed.
E. Fifth embodiment:
fig. 8 and 9 are explanatory views showing a schematic configuration of a battery 100E in the fifth embodiment. In fig. 9, the laminate 10 is omitted for convenience of illustration. In the description of the fifth embodiment, the same components as those of the fourth embodiment are denoted by the same reference numerals and the description thereof is omitted. In the present embodiment, the battery 100E is different from the battery 100D in the fourth embodiment in that the supply holes 25a and the discharge holes 25b are provided in the end plate 20E on the one end side, and the other configuration is the same as that of the fourth embodiment.
In the present embodiment, the plurality of passages 31 include: a forward passage 31Ea through which the cooling medium flows from one end portion to the other end portion of the laminate 10; and a reverse path 31Eb through which the cooling medium flows from the other end toward the one end. As shown in fig. 9, the refrigerant fluid flows in the direction of arrow A1 through the forward passage 31Ea, and the refrigerant fluid flows in the direction of arrow A2 through the reverse passage 31Eb.
In the present embodiment, the end plate 20E provided on one end side of the stacked body 10 is referred to as an end side end plate 20Ea, and the end plate 20E provided on the other end side of the stacked body 10 is referred to as an end side end plate 20Eb. One end side end plate 20Ea is provided with two access holes 25. More specifically, the one-end-side body 21Ea is provided with a supply hole 25a for supplying the cooling medium flowing into the forward passage 31Ea and a discharge hole 25b for discharging the cooling medium flowing out of the backward passage 31Eb. On the other hand, none of the end plates 20Eb is provided. That is, the access hole 25 is not provided in the other end side body 21 Eb. Further, the one end side end plate 20Ea has a partition wall 26E in addition to the partition wall 26, and the partition wall 26E is provided so that the third passage 23 communicating with the supply hole 25a and the third passage 23 communicating with the discharge hole 25b do not communicate.
According to this embodiment, since the supply holes 25a and the discharge holes 25b are provided in the one end side end plate 20Ea, the layout of the battery 100E becomes easier than in the case where the supply holes 25a and the discharge holes 25b are provided at both ends of the end plate 20E.
F. Sixth embodiment:
fig. 10 and 11 are explanatory views showing a schematic configuration of a battery 100F according to a sixth embodiment. In fig. 11, the laminate 10 is omitted for convenience of illustration. In the description of the sixth embodiment, the same components as those of the fifth embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the present embodiment, a battery 100F is different from the battery 100E in the fifth embodiment in that partitions 26F and 27 in an end plate 20F partition a third passage 23 along a direction perpendicular to the stacking direction of the stacked body 10, and the other configuration is the same as that in the fifth embodiment. The sixth embodiment also has substantially the same effects as the fifth embodiment.
In the present embodiment, two access holes 25 are provided in the one end side end plate 20Fa in vertical alignment. More specifically, the one-end-side body 21Fa has a supply hole 25a provided above for supplying the cooling medium flowing into the forward passage 31Ea, and a discharge hole 25b provided below for discharging the cooling medium flowing out of the backward passage 31Eb. On the other hand, the other end side end plate 20Fb is not provided. That is, the access hole 25 is not provided in the other end side body 21 Fb.
Further, the one end side body 21Fa and the other end side body 21Fb are provided with partition walls 26F partitioning the third passages 23 in a direction perpendicular to the stacking direction of the stacked body 10. The one-end-side body portion 21Fa has, in addition to the partition wall 26F, a partition wall 27 that partitions the third passage 23 in a direction perpendicular to the stacking direction of the stacked body 10, and is provided so that the third passage 23 communicating with the supply hole 25a and the third passage 23 communicating with the discharge hole 25b do not communicate.
G. The seventh embodiment:
fig. 12 is an explanatory view of a manufacturing process of the cooling unit 40 in the seventh embodiment. The seventh embodiment is different from the cooling unit 40 of the first embodiment in that the cooling unit 40G is manufactured by bending one plate-like member along the extending direction of the passage 31, and the other configuration is the same as that of the first embodiment.
Fig. 13 is a flowchart showing an example of a method for manufacturing battery 100 according to the present embodiment. In step S100, first, a stacked body 10, a pair of end plates 20, a cooling plate 30, and the like, which are components of the battery 100, are prepared. In the present embodiment, the passage 31 is not formed in a portion of the cooling plate 30 that becomes a corner portion when bending is performed in a step described later.
In step S110, the cooling unit 40G is manufactured. The cooling unit 40G is manufactured by bending the cooling plate 30 prepared in step S100 along the extending direction of the passage 31.
In step S120, the stacked body 10 prepared in step S100, the pair of end plates 20, and the cooling unit 40G manufactured in step S110 are integrated, thereby manufacturing the battery 100. For example, the end plate 20 and the cooling unit 40G are integrated by brazing, for example.
In the present embodiment, the cooling unit 40G is manufactured by bending one plate-like member along the extending direction of the passage 31. Therefore, compared to the case where the cooling unit 40G having a shape curved from the beginning is manufactured by extrusion molding, it can be manufactured with high accuracy, and therefore, a bonding failure with the end plate 20 or the laminated body 10 can be suppressed.
H. Other embodiments are as follows:
(H1) In the above embodiment, the plurality of communication holes 24 have a substantially circular shape. Alternatively, the communication hole 24 may be oval or substantially rectangular in shape. Further, the plurality of communication holes 24 may have different shapes.
(H2) In the above embodiment, the plurality of communication holes 24 are the same size. Alternatively, the sizes of the plurality of communication holes 24 may be different from each other. For example, the communication holes 24 communicating with the passages 31 facing the portion of the stacked body 10 intended to be further cooled may be formed larger than the communication holes 24 communicating with the other passages 31.
(H3) In the above embodiment, the number of the communication holes 24 communicating with each passage 31 is 1 or 0. The number of the communication holes 24 communicating with the passages 31 is not limited to this, and may be two or more. For example, the number of the communication holes 24 communicating with the passages 31 opposed to the portions of the stacked body 10 intended to be further cooled may be larger than the number of the communication holes 24 communicating with the other passages 31.
(H4) In the above embodiment, the plurality of passages 31 have the same flow path width. The flow path widths of the plurality of passages 31 may be different from each other. The channel width of the passage 31 may include a wide portion and a narrow portion in the stacking direction of the stacked body 10.
(H5) In the above embodiment, the battery 100 has three cooling plates 30. The battery 100 is not limited to this, and may have one or more cooling plates 30.
(H6) In the above embodiment, the battery 100 has two access holes 25. More specifically, the battery 100 includes one supply hole 25a and one discharge hole 25b. The battery 100 is not limited to this, and may include three or more access holes 25.
The present disclosure is not limited to the above-described embodiments, and can be implemented in various configurations without departing from the scope of the present disclosure. For example, in order to solve the above-described problems or to achieve a part or all of the above-described effects, technical features in embodiments corresponding to technical features in the respective aspects described in the section of the summary of the invention may be appropriately replaced or combined. In addition, if the technical feature is not described as a necessary technical feature in the present specification, it may be appropriately deleted.

Claims (6)

1. A battery is provided with:
a laminate including a plurality of battery cells laminated together;
a pair of end plates provided on both sides of the stacked body in a stacking direction of the stacked body; and
a cooling plate connected to the pair of end plates, provided in contact with at least a part of the stacked body, and having a plurality of passages formed along the stacking direction,
the end plate includes a plurality of communication holes, and causes a coolant to flow through at least one of the plurality of passages via the plurality of communication holes,
the plurality of passages include two or more passages different in number or size from each other in communication holes communicated with each other.
2. The battery according to claim 1, wherein,
the plurality of said passages comprising: a first passage communicating with the communication hole; and a second passage not communicating with the communication hole and not allowing the coolant to flow therethrough.
3. The battery according to claim 1 or 2,
the end plate has: a plurality of third passages through which the cooling medium flows; and one or more partition walls partitioning the plurality of third passages.
4. The battery according to any one of claims 1 to 3,
at least a part of the end surface of the end plate is in contact with a surface of the cooling plate facing the stacked body.
5. The battery according to any one of claims 1 to 4,
the plurality of said passages comprising: a forward passage through which the cooling medium flows from one end portion of the stacked body to the other end portion of the stacked body in the stacking direction of the stacked body; and a reverse passage through which the cooling medium flows from the other end portion toward the one end portion,
the end plate provided at the one end portion has: a supply hole for supplying the cooling medium flowing into the forward passages of the end plate and the cooling plate; and a discharge hole for discharging the cooling medium flowing out from the reverse path of the cooling plate and the end plate.
6. A method of manufacturing the battery according to any one of claims 1 to 5, wherein,
the battery includes a cooling unit surrounding the stacked body, the cooling unit being configured by two or more cooling plates connected to each other in a direction in which the passages are arranged,
the manufacturing method includes a step of bending one plate-shaped member in which the passage is formed along an extending direction of the passage to manufacture the cooling unit.
CN202210582300.XA 2021-07-14 2022-05-26 Battery and method for manufacturing battery Pending CN115621646A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021116300A JP2023012703A (en) 2021-07-14 2021-07-14 Battery and battery manufacturing method
JP2021-116300 2021-07-14

Publications (1)

Publication Number Publication Date
CN115621646A true CN115621646A (en) 2023-01-17

Family

ID=84857634

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210582300.XA Pending CN115621646A (en) 2021-07-14 2022-05-26 Battery and method for manufacturing battery

Country Status (2)

Country Link
JP (1) JP2023012703A (en)
CN (1) CN115621646A (en)

Also Published As

Publication number Publication date
JP2023012703A (en) 2023-01-26

Similar Documents

Publication Publication Date Title
CN110763049B (en) Heat exchanger with parallel flow features to enhance heat transfer
US8726976B2 (en) Laminated sheet manifold for microchannel heat exchanger
WO2007145352A1 (en) Heat sink and cooler
US9806381B2 (en) Serpentine cooling element for battery assembly
JP5255817B2 (en) Battery module
US11976894B2 (en) High-performance heat exchanger with calibrated bypass
CN215864862U (en) Heat exchanger with internal manifold structure
WO2013137185A1 (en) Battery pack
WO2017070785A1 (en) A structural support element in heat exchangers
CN215930673U (en) Heat exchanger
CN111868467A (en) Cold plate for battery module
WO2021018675A1 (en) Contra flow channel battery heat exchanger
KR20180083140A (en) Battery pack housing and battery pack including the same
CN110729259B (en) Micro-channel heat sink and manufacturing method thereof
JP5793969B2 (en) Laminated battery
CN215869534U (en) Heat exchanger with cross-over passage for cold fluid distribution
JP5268044B2 (en) Fuel cell
KR20200082567A (en) Heat exchanger for battery cooling
US11283122B2 (en) Battery pack
CN115621646A (en) Battery and method for manufacturing battery
EP3896779B1 (en) Battery pack
EP2833403B1 (en) Header for electronic cooler
JP7306255B2 (en) Heat exchanger
KR102350025B1 (en) Heat Exchanger for Cooling Electric Element
US20220015271A1 (en) Cooling system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination