CN111628239A - Battery pack and method of assembling the same - Google Patents

Battery pack and method of assembling the same Download PDF

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Publication number
CN111628239A
CN111628239A CN201910153578.3A CN201910153578A CN111628239A CN 111628239 A CN111628239 A CN 111628239A CN 201910153578 A CN201910153578 A CN 201910153578A CN 111628239 A CN111628239 A CN 111628239A
Authority
CN
China
Prior art keywords
battery pack
battery
control assembly
assembly
temperature control
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
CN201910153578.3A
Other languages
Chinese (zh)
Inventor
茅金健
缪永华
范宏军
周炫名
缪颖培
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.)
Zhongtian Energy Storage Technology Co Ltd
Original Assignee
Zhongtian Energy Storage Technology Co Ltd
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 Zhongtian Energy Storage Technology Co Ltd filed Critical Zhongtian Energy Storage Technology Co Ltd
Priority to CN201910153578.3A priority Critical patent/CN111628239A/en
Publication of CN111628239A publication Critical patent/CN111628239A/en
Pending legal-status Critical Current

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    • 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
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • 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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M10/6555—Rods or plates arranged between the cells
    • 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
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6572—Peltier elements or thermoelectric devices
    • 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
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention provides a battery pack and an assembling method thereof, wherein the battery pack comprises a battery pack shell and a plurality of battery cells arranged in the battery pack shell in an array manner, the battery pack also comprises a temperature control assembly and a battery system control assembly, the temperature control assembly comprises a plurality of inner radiating fins, a semiconductor refrigerating fin and an outer radiating fin which are arranged in sequence, and two sides of the semiconductor refrigerating fin are respectively butted with the inner radiating fins and the outer radiating fins; the temperature control assembly further comprises a power supply assembly, the power supply assembly is communicated with the semiconductor refrigeration piece to supply power to the semiconductor refrigeration piece, the power supply assembly is communicated with the battery system control assembly, the battery pack further comprises a fan assembly, and the fan assembly is arranged on one side of the battery pack shell. The invention regulates and controls the temperature inside the battery cell through the Peltier effect, so that the temperature control efficiency is high, heating and refrigeration can be switched at any time, and the invention has the advantages of short temperature control period, low energy consumption, energy saving, environmental protection and the like.

Description

Battery pack and method of assembling the same
Technical Field
The invention relates to the technical field of battery pack temperature control management, in particular to a battery pack and an assembling method thereof.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
The lithium battery is used as a novel clean energy and widely applied to energy storage power stations, pure electric vehicles and communication backup power supplies; because the lithium battery has higher requirements on the temperature of the working environment, the excessively high or excessively low temperature of the working environment has higher influence on the internal resistance, the heat consumption rate, the discharge capacity, the cycle life, the consistency of the state and the like of the battery cell, and in addition, the geographical distribution difference of the product in actual application is larger, and the charging and discharging multiplying power are different.
In practical application, temperature control management is generally performed on a module or a battery pack formed by connecting battery cells in series and parallel, at present, air cooling is generally used more, and the method is low in efficiency and high in energy consumption due to low air heat conductivity.
Disclosure of Invention
In view of the above, there is a need for an improved battery pack.
The technical scheme provided by the invention is as follows:
a battery pack comprises a battery pack shell and a plurality of battery cells arranged in an array mode in the battery pack shell, and further comprises a temperature control assembly and a battery system control assembly, wherein the temperature control assembly comprises a plurality of inner radiating fins, a plurality of semiconductor refrigerating fins and a plurality of outer radiating fins which are arranged in sequence, and two sides of each semiconductor refrigerating fin are respectively abutted to the inner radiating fins and the outer radiating fins; the temperature control assembly further comprises a power supply assembly, the power supply assembly is communicated with the semiconductor refrigeration piece to supply power to the semiconductor refrigeration piece, the power supply assembly is communicated with the battery system control assembly, the battery pack further comprises a fan assembly, and the fan assembly is arranged on one side of the battery pack shell.
Preferably, the inner radiating fins are embedded between the adjacent electric cores and extend towards one side of the semiconductor refrigerating sheet and are abutted against the semiconductor refrigerating sheet, and the inner radiating fins and the electric cores adjacent to the inner radiating fins are mutually attached.
Preferably, the temperature control assembly further comprises a plurality of heat insulation foam, the heat insulation foam is located between the inner radiating fin and the outer radiating fin, a containing groove is formed in the heat insulation foam, and the containing groove is used for containing the semiconductor refrigerating fin.
Preferably, the battery pack shell is of a substantially columnar structure, an opening is formed in one side of the battery pack shell and used for accommodating the temperature control assembly, a protruding edge extends towards the center of the opening in one side of the opening of the battery pack shell and is arranged on the periphery of the temperature control assembly in an abutting mode.
Preferably, the convex edge is abutted to the side edge of the outer radiating fin, and the semiconductor refrigeration fin and the inner radiating fin are both located inside the battery pack shell.
Preferably, the temperature control assembly further comprises a temperature sensor, and the temperature sensor is communicated with the battery system control assembly.
Preferably, the power supply assembly comprises a plurality of wires led out from the battery system control assembly, wherein the other ends of the two wires are respectively connected with the two ends of the semiconductor refrigeration piece, and the other ends of the two wires are respectively connected with the positive electrode and the negative electrode of the battery pack.
Preferably, the power supply assembly further comprises an external power supply, and the anode and the cathode of the external power supply are connected to the battery system control assembly through leads to supply power to the semiconductor refrigeration sheet.
Another object of the present invention is to provide a method for assembling a battery pack, including the steps of:
s1: arranging the electric cores in a series-parallel connection mode as required, and inserting the inner radiating fins between the adjacent electric cores;
s2: assembling the semiconductor refrigerating sheet and the outer radiating sheet into a whole, fixing heat insulation foam on the side surface of one side of the inner radiating sheet pointing to the outer radiating sheet, opening the heat insulation foam to accommodate the semiconductor refrigerating sheet, and arranging the assembled semiconductor refrigerating sheet and outer radiating sheet module, and the battery core and inner radiating sheet module into an integral module;
s3: and after the whole module is finished, the whole module is arranged in the battery pack shell, and other components of the battery pack are arranged to finish the assembly of the battery pack.
Preferably, when the cell and the inner heat sink module are mounted in S1, the cell and the inner heat sink are combined together by the thermal grease.
Compared with the prior art, the invention provides a battery pack, which comprises a battery pack shell and a plurality of battery cells arranged in the battery pack shell in an array manner, and further comprises a temperature control assembly and a battery system control assembly, wherein the temperature control assembly comprises a plurality of inner radiating fins, semiconductor refrigerating fins and outer radiating fins which are sequentially arranged, and two sides of each semiconductor refrigerating fin are respectively butted with the inner radiating fins and the outer radiating fins; the temperature control assembly further comprises a power supply assembly, the power supply assembly is communicated with the semiconductor refrigeration piece to supply power to the semiconductor refrigeration piece, the power supply assembly is communicated with the battery system control assembly, the battery pack further comprises a fan assembly, and the fan assembly is arranged on one side of the battery pack shell. According to the invention, through the inner radiating fins, the semiconductor refrigerating fins and the outer radiating fins which are internally attached, the temperature inside the battery cell is regulated and controlled through the Peltier effect, so that the temperature control efficiency is high, the heating and the refrigerating can be switched at any time, and the solar battery has the advantages of short temperature control period, low energy consumption, energy conservation, environmental protection and the like.
The invention also provides an assembly method of the battery pack, which comprises the following steps: s1: arranging the electric cores in a series-parallel connection mode as required, and inserting the inner radiating fins between the adjacent electric cores; s2: assembling the semiconductor refrigerating plate and the outer radiating plate into a whole, and arranging the assembled semiconductor refrigerating plate and outer radiating plate module, and the battery core and inner radiating plate module into an integral module; s3: and after the whole module is finished, the whole module is arranged in the battery pack shell, and other components of the battery pack are arranged to finish the assembly of the battery pack. Through assembling and splicing the inner radiating fins and the electric core as well as the outer radiating fins and the semiconductor refrigerating fins respectively, the components in the finally completed battery pack can be tightly combined together, and the temperature of the electric core can be regulated and controlled through the temperature control assembly formed by assembling the inner radiating fins, the semiconductor refrigerating fins and the outer radiating fins.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is an overall schematic view of a battery pack according to an embodiment of the present invention.
Fig. 2 is a partial structural view of a battery pack according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a battery pack according to an embodiment of the present invention.
Fig. 4 is an exploded view of a battery pack according to an embodiment of the present invention.
Fig. 5 is an overall schematic diagram of a circuit in a battery pack according to an embodiment of the present invention.
Description of reference numerals:
battery pack 100
Battery pack case 10
Convex edge 11
Battery cell 30
Temperature control assembly 50
Inner radiating fin 51
First fixing plate 511
First fin 512
Semiconductor refrigerating plate 54
Heat insulation foam 55
External radiating fin 56
Second fixing plate 561
Second fin 562
Power supply assembly 57
External power supply 571
Temperature sensor 59
Battery system control assembly 70
Fan assembly 90
Fan blower 91
Mounting plate 93
A bent part 931
The following detailed description further illustrates embodiments of the invention in conjunction with the above-described figures.
Detailed Description
So that the manner in which the above recited objects, features and advantages of embodiments of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments of the invention, and the described embodiments are merely a subset of embodiments of the invention, rather than a complete embodiment. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the embodiments of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the present invention belong. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the invention.
Referring to fig. 1 and fig. 2, the battery pack 100 of the present invention includes a battery pack case 10 and a plurality of battery cells 30 located inside the battery pack case 10, in this embodiment, the battery cells 30 are multiple, the battery cells 30 are arranged inside the battery pack case 10 in an array, the battery pack 100 further includes a temperature control assembly 50, a battery system control assembly 70, and a fan assembly 90, one side of the temperature control assembly 50 is connected to the battery cells 30, the other side of the temperature control assembly 50 extends to the outside of the battery pack case 10, and the fan assembly 90 is disposed on a side surface of the temperature control assembly extending outward.
Referring to fig. 1, the battery pack case 10 is substantially a cylindrical structure, in this embodiment, the battery pack case 10 is a rectangular parallelepiped, and an opening is formed on one side of the battery pack case 10 for installing the temperature control assembly 50. In this embodiment, referring to fig. 2, the temperature control assembly 50 is fixed on the battery assembly housing 10, and a protruding edge 11 pointing to the temperature control assembly 50 is disposed at an opening of the battery assembly housing 10.
In this embodiment, the temperature control adjusting assembly 50 includes an inner heat sink 51, a semiconductor cooling plate 54, a heat insulation foam 55, and an outer heat sink 56. A containing groove is arranged on the heat insulation foam 55 in a penetrating manner and is used for filling the semiconductor refrigeration sheet 54; the thermal insulation foam 55 is located at the opening of the battery pack case 10. The inner heat radiating fins 51 and the outer heat radiating fins 56 are arranged in a mutually abutting mode with the heat insulation foam 55 and the semiconductor refrigerating fins 54 on the heat insulation foam 55. Referring to fig. 3, in the present embodiment, the inner heat sink 51 is mounted in the battery pack case 10, the inner heat sink 51 includes a first fixing plate 511 and a plurality of first fins 512, the first fixing plate 511 is mounted in an opening of the battery pack case 10, and the first fins 512 are arranged in an array on one side surface of the fixing plate 511. In this embodiment, the first fixing plate 511 is a plate-shaped arrangement, a side surface of the first fixing plate 511, which deviates from the first fin 512, is attached to the thermal insulation foam 55, the first fin 512 is perpendicular to a side surface of the first fixing plate 511, which deviates from the thermal insulation foam 55, each of the first fins 512 is embedded between the adjacent battery cores 30, and is used for absorbing heat on the battery cores 30 or transmitting heat to the battery cores 30. In this embodiment, the inner heat sink 51 and the battery cell 30 are attached to each other, and a heat conductive grease is provided at a portion where the first fin 511 and the battery cell 30 are attached to each other. The temperature between the first fin 511 and the battery cell 30 is mutually transmitted by the thermal grease, and the electrical performance of the battery cell 30 is ensured to be stable.
Referring to fig. 4, the outer heat dissipation plate 56 includes a second fixing plate 561 and a plurality of second fins 562, the second fixing plate 561 is located in the opening of the battery pack case 10, a side surface of one side of the second fixing plate is attached to the heat insulation foam 55, the second fins 562 are arranged on one side of the second fixing plate 561 in an array manner, and the second fins 562 extend to the outside of the battery pack case 10 and extend out of the battery pack case 10. In this embodiment, the second fins 562 and the first fins 512 are perpendicular to each other, and in other embodiments, the second fins 562 and the first fins 512 may be provided at other angles.
In this embodiment, the convex edge 11 abuts against the side of the outer heat dissipation plate 56, and the inner heat dissipation plate 51 and the battery cell 30 are wrapped inside the battery pack case 10 by the convex edge 11 and the heat insulation foam 55, so that the temperature inside the battery pack case 10 can be kept constant, and the temperature inside the battery pack case 10 is prevented from being influenced by the outside.
In this embodiment, the semiconductor cooling plate 54 has a plate-shaped structure, the side surfaces of the two sides of the semiconductor cooling plate 54, which point to the inner heat sink 51 and the outer heat sink 56, are coated with heat-conducting silicone grease, respectively, and the inner heat sink 51 and the outer heat sink 56 are fixed on the semiconductor cooling plate 54 by the heat-conducting silicone grease. In other embodiments, the thermally conductive silicone grease may also be replaced with a thermally conductive silicone pad. The inner heat radiating fin 51 and the outer heat radiating fin 56 are fastened by screws, in the embodiment, through holes which are mutually communicated are formed in the outer heat radiating fin 56 and the heat insulation foam 55, threaded holes which are mutually communicated with the through holes are formed in the inner heat radiating fin 51, and the inner heat radiating fin 51, the semiconductor refrigeration fin 54, the heat insulation foam 55 and the outer heat radiating fin 56 can be tightly contacted by penetrating the through holes through the screws and screwing the through holes to the threaded holes.
Referring to fig. 5, in this embodiment, the power supply assembly 57 includes a plurality of wires led out from the battery system control assembly 70, two ends of the two wires are respectively connected to the semiconductor chilling plates 54, and the two wires are respectively connected to the positive and negative electrodes of an integral module formed by combining the electrical core 30 in series and parallel, so as to supply power to the semiconductor chilling plates 54 through the integral module formed by the electrical core 30. In this embodiment, the power supply assembly 57 includes the battery cell 30, in other embodiments, the power supply assembly 57 further includes an external power supply 571, the external power supply 571 is communicated with the power system control assembly 70 through a wire, and in other embodiments, the external power supply 571 is disposed on an inner wall of the battery pack case 10. In use, when the internal power supply is insufficient, the semiconductor chilling plates 54 are powered by the external power supply 57.
The temperature control assembly 50 further includes a temperature sensor 59 connected to the battery system control assembly 70, in this embodiment, the temperature sensor 59 is a patch type temperature sensor, and the temperature sensor 59 is attached to one of the battery cells 30. In other embodiments, the temperature sensor 59 may also be configured as a drop-type temperature sensor. In the using process, the temperature sensor 59 is used for detecting the temperature of the battery core 30, when the temperature of the battery core 30 exceeds the highest set value, the temperature sensor 59 transmits a signal to the battery system control assembly 70, the battery system control assembly 70 controls the power supply assembly 57 to normally supply power to the semiconductor chilling plate 54, according to the peltier effect, the contact side of the semiconductor chilling plate 54 and the inner heat dissipation plate 51 is a cold end, the contact side of the semiconductor chilling plate 54 and the outer heat dissipation plate 56 is a hot end, and the inner heat dissipation plate 51 is in contact with the battery core 30 to rapidly cool the battery core 30; when the temperature of the battery cell 30 is lower than the lowest set value, the battery system control assembly 70 controls the power supply assembly 57 to reversely supply power to the semiconductor refrigeration sheet 54, at this time, one side of the semiconductor refrigeration sheet 54 and the inner heat dissipation sheet 51 is a hot end, the end in contact with the outer heat dissipation sheet 56 is a cold end, and the inner heat dissipation sheet 51 is in contact with the battery cell 30 to rapidly heat the battery cell 30.
In this embodiment, the fan assembly 90 includes an installation plate 93 and a fan 91, the middle of the installation plate 93 is penetrated for ventilation, and the fan 91 arranged to direct the outer heat dissipation fins 56 is provided at the middle penetrated position of the installation plate 93. In this embodiment, the mounting plate 93 is located on the opening side of the battery pack case 10, the mounting plate 93 is disposed in a substantially U shape, the two ends of the U-shaped opening of the mounting plate 93 are respectively provided with a bending portion 931 pointing away from each other, the bending portion 931 and the side wall of the battery pack case 10 are attached to each other, and the bending portion 931 is further provided with a bolt (not shown in the figure) for fixing on the battery pack case 10. The fan 91 is operated so that the air flow speed at the outer fin 56 is increased, thereby increasing the efficiency of heat dissipation.
In the invention, through the inner radiating fin 51, the semiconductor refrigerating fin 54 and the outer radiating fin 56, when the temperature change exceeds a preset value, the temperature between the inner radiating fin 51 and the outer radiating fin 56 is regulated and controlled by electrifying the semiconductor refrigerating fin 54 in the forward direction or the reverse direction, so that the temperature of the battery cell 30 can be always kept within a preset temperature range, and the temperature control assembly 50 in the invention has the advantages of short temperature control period, low energy consumption, energy conservation, environmental protection and the like.
Another object of the present invention is to provide an assembling method of a battery pack 100 for assembling the battery pack 100 in the above embodiment, including the steps of:
s1: the battery cells 30 are arranged in series or in parallel, and the inner heat sink 51 is interposed between the adjacently disposed battery cells 30.
In the present embodiment, the cell 30 and the inner heat sink 51 are combined together by the thermal grease during the process of mounting the cell 30 and the inner heat sink 51.
S2: the semiconductor refrigeration piece 54 and the outer heat dissipation piece 56 are assembled into a whole, and the assembled semiconductor refrigeration piece 54 and outer heat dissipation piece 56 module, the battery core 30 and the inner heat dissipation piece 51 module are arranged into an integral module.
In the process of assembling the assembled semiconductor refrigerating sheet 54 and outer heat dissipation sheet 56 module with the battery core 30 and inner heat dissipation sheet 51 module, the heat insulation foam 55 is used for filling the space between the inner heat dissipation sheet 51 and the outer heat dissipation sheet 56 except the semiconductor refrigerating sheet 54.
S3: after the integral module is completed, the integral module is mounted in the battery pack case 10, completing the assembly of the battery pack 100.
Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the embodiments of the present invention.

Claims (10)

1. The utility model provides a battery pack, includes the group battery casing and is located a plurality of electric cores that the inside array of group battery casing set up, its characterized in that: the battery pack also comprises a temperature control assembly and a battery system control assembly, wherein the temperature control assembly comprises a plurality of inner radiating fins, semiconductor refrigerating fins and outer radiating fins which are sequentially arranged, and two sides of each semiconductor refrigerating fin are respectively butted with the inner radiating fins and the outer radiating fins; the temperature control assembly further comprises a power supply assembly, the power supply assembly is communicated with the semiconductor refrigeration piece to supply power to the semiconductor refrigeration piece, the power supply assembly is communicated with the battery system control assembly, the battery pack further comprises a fan assembly, and the fan assembly is arranged on one side of the battery pack shell.
2. The battery pack according to claim 1, characterized in that: interior fin inlay establishes between the adjacent setting and extend and the butt setting to semiconductor refrigeration piece one side on the semiconductor refrigeration piece, interior fin and with it laminate the setting each other between the adjacent electric core that sets up.
3. The battery pack according to claim 1, characterized in that: the temperature control assembly further comprises a plurality of heat insulation foam, the heat insulation foam is located between the inner radiating fin and the outer radiating fin, a containing groove is formed in the heat insulation foam, and the containing groove is used for containing the semiconductor refrigerating fin.
4. The battery pack according to claim 1, characterized in that: the battery pack shell is of a columnar structure, an opening is formed in one side of the battery pack shell and used for containing the temperature control assembly, a convex edge extends towards the center of the opening in one side of the opening of the battery pack shell, and the convex edge is abutted to the periphery of the temperature control assembly.
5. The battery pack according to claim 4, characterized in that: the convex edge is abutted against the side edge of the outer radiating fin, and the semiconductor refrigerating fin and the inner radiating fin are both positioned inside the battery pack shell.
6. The battery pack according to claim 1, characterized in that: the temperature control assembly further comprises a temperature sensor, and the temperature sensor is communicated with the battery system control assembly.
7. The battery pack according to claim 1, characterized in that: the power supply assembly comprises a plurality of leads led out from the battery system control assembly, wherein the other ends of the two leads are respectively connected with the two ends of the semiconductor refrigeration piece, and the other ends of the two leads are respectively connected with the positive electrode and the negative electrode of the battery pack.
8. The battery pack according to claim 7, characterized in that: the power supply assembly further comprises an external power supply, and the anode and the cathode of the external power supply are connected to the battery system control assembly through leads to supply power to the semiconductor refrigeration piece.
9. A method of assembling a battery pack for assembling the battery pack according to any one of claims 1 to 8, characterized in that: comprises the following steps:
s1: arranging the electric cores in a series-parallel connection mode as required, and inserting the inner radiating fins between the adjacent electric cores;
s2: assembling the semiconductor refrigerating sheet and the outer radiating sheet into a whole, fixing heat insulation foam on the side surface of one side of the inner radiating sheet pointing to the outer radiating sheet, opening the heat insulation foam to accommodate the semiconductor refrigerating sheet, and arranging the assembled semiconductor refrigerating sheet and outer radiating sheet module, and the battery core and inner radiating sheet module into an integral module;
s3: and after the whole module is finished, the whole module is arranged in the battery pack shell, and other components of the battery pack are arranged to finish the assembly of the battery pack.
10. The method of assembling a battery pack according to claim 9, characterized in that: when the battery cell and the inner heat sink module are mounted in S1, the battery cell and the inner heat sink are combined together by the thermal grease.
CN201910153578.3A 2019-02-28 2019-02-28 Battery pack and method of assembling the same Pending CN111628239A (en)

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Application Number Priority Date Filing Date Title
CN201910153578.3A CN111628239A (en) 2019-02-28 2019-02-28 Battery pack and method of assembling the same

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Application Number Priority Date Filing Date Title
CN201910153578.3A CN111628239A (en) 2019-02-28 2019-02-28 Battery pack and method of assembling the same

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Publication Number Publication Date
CN111628239A true CN111628239A (en) 2020-09-04

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CN112968228A (en) * 2021-02-01 2021-06-15 徐州储盈电子科技有限公司 Electric motor car lithium cell heat abstractor
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CN113067055A (en) * 2021-02-27 2021-07-02 陈杨 Visual type heat preservation lithium cell

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