CN113113712A - Battery pack and electric equipment - Google Patents
Battery pack and electric equipment Download PDFInfo
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- CN113113712A CN113113712A CN202110302746.8A CN202110302746A CN113113712A CN 113113712 A CN113113712 A CN 113113712A CN 202110302746 A CN202110302746 A CN 202110302746A CN 113113712 A CN113113712 A CN 113113712A
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- Prior art keywords
- battery module
- insulating ring
- cooling channel
- cooling
- connection
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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
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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
- H01M10/65—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
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M10/65—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
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- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a battery pack and electric equipment, wherein the battery pack comprises a cooling plate, a first cooling channel is arranged in the cooling plate, a first connecting interface is arranged on one surface of the cooling plate, and the first connecting interface is communicated with the first cooling channel; the battery module is provided with a second cooling channel and a second connecting interface, and the second connecting interface is communicated with the second cooling channel; and the connecting joint is used for being respectively connected with the first connecting interface and the second connecting interface when the battery module is arranged on one surface of the cooling plate, so that the first cooling channel is communicated with the second cooling channel. Through the manner, the embodiment of the invention can quickly take away heat by enabling the coolant to flow from the first cooling channel of the cooling plate to the second cooling channel of the battery module, thereby enhancing the heat dissipation effect of the battery pack.
Description
Technical Field
The embodiment of the invention relates to the technical field of new energy heat dissipation, in particular to a battery pack and electric equipment.
Background
The new energy is taken as clean energy to obtain key support of a plurality of countries all over the world, the battery pack is taken as the new energy integrating energy efficiency and convenience to obtain the favor of China and is developed in key, and the battery pack which can deal with various use environments appears on the market.
However, the inventors of the present invention found that, in the process of implementing the present invention, the battery module of the conventional battery pack is fixed on the cooling plate, and the purpose of heat dissipation is achieved by the contact between the bottom of the battery module and the cooling plate.
Disclosure of Invention
The technical problem mainly solved by the embodiment of the invention is to provide a battery pack and electric equipment, wherein the first cooling channel of a cooling plate and the second cooling channel of the battery pack positioned on the cooling plate are communicated through a connecting joint, so that a coolant can flow into the cooling plate from the battery pack, the heat of the battery pack is taken away quickly, and the improvement of the installation efficiency is facilitated.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a battery pack, includes cooling plate, battery module and attach fitting, be provided with first cooling channel in the cooling plate, a surface of cooling plate is provided with first connection interface, first connection interface with first cooling channel intercommunication, battery module are provided with second cooling channel and second connection interface, the second connection interface with second connection interface intercommunication, attach fitting are used for battery module set up in when a surface of cooling plate, respectively with first connection interface and second connection interface connection, so that first cooling channel and second cooling channel intercommunication to let the coolant in the battery pack can be by the flow-in cooling plate, finally take away the heat of battery pack fast.
Optionally, the connection joint includes a guide pipe and a boss extending from an outer surface of the guide pipe, the boss surrounds the guide pipe, an accommodating groove is formed in one surface of the cooling plate, one end of the guide pipe is inserted into the first connection interface, the other end of the guide pipe is inserted into the second connection interface, the boss is accommodated in the accommodating groove, the first connection interface and the second connection interface are connected through the connection joint respectively, so that a first cooling channel arranged on the cooling plate is communicated with a second cooling channel arranged on the battery module, and the accommodating groove is matched with the boss to fix the connection joint in the cooling plate, so as to limit the connection joint from shaking.
Optionally, the battery pack further comprises an insulating ring, an annular step is arranged on the side wall of the first connection interface, the insulating ring is arranged on the annular step, and the pipe wall of one end of the guide pipe is abutted to the insulating ring, so that a good sealing effect can be achieved at the first connection interface, and leakage is reduced.
Optionally, the battery pack further includes a first insulating ring and a second insulating ring, the first insulating ring is sleeved at one end of the conduit, the second insulating ring is sleeved at the other end of the conduit, the first insulating ring is used for sealing an outer surface of one end of the conduit with an inner surface of a side wall of the first connection interface, the second insulating ring is used for sealing an outer surface of the other end of the conduit with an inner surface of a side wall of the second connection interface, and the first connection interface and the second connection interface are respectively sealed under the action of the first insulating ring and the second insulating ring, so that the sealing performance of two ends of the connection interface is further enhanced.
Optionally, the connection joint is further provided with a first groove and a second groove, the first groove and the second groove are respectively arranged at two sides of the connection position of the boss and the pipe body, and the first insulating ring is sleeved on the first groove and the first insulating ring is partially accommodated in the first groove, part of the first insulating ring is exposed in the first groove in a protruding mode, the first insulating ring is exposed in the part of the first groove in a protruding mode and is abutted against the side wall of the second connecting port, the second insulating ring is sleeved on the second groove and the second insulating ring is partially accommodated in the second groove, part of the second insulating ring is exposed and protrudes out of the second groove, the second insulating ring protrudes out of the second groove and is abutted against the side wall of the second connecting interface of the annular step, therefore, the connecting joint can be better matched with the first insulating ring and the second insulating ring to realize a sealing effect.
Optionally, the battery pack further includes a third insulating ring, the third insulating ring is sleeved on the other end of the conduit, and the third insulating ring is used for sealing the outer surface of the other end of the conduit and the inner surface side wall of the second connection interface, wherein the third insulating ring and the second insulating ring are arranged at an interval, and the third insulating ring further enhances the sealing effect of the connection joint and the second connection interface.
Optionally, the battery module includes a casing and an electric core, the casing is provided with a cavity, the electric core is accommodated in the cavity, the second cooling channel and the second connection interface are both arranged in the casing, and the electric core accommodated in the cavity can be rapidly cooled by the second cooling channel.
Optionally, the battery module is further provided with a third connection interface communicated with the second cooling channel, the third connection interface and the second connection interface are respectively located at the same end of the battery module, the number of the battery modules is multiple, the number of the first connection interfaces and the number of the connection joints are multiple, one is used for connecting the second connection interface of the battery module through one and communicating with the first connection interface, the third connection interface is communicated with the other through one and communicating with the first connection interface, and at the moment, the first cooling channel is communicated with the second cooling channel.
Optionally, the number of the second cooling channels, the third connection interfaces, and the second connection interfaces is plural, and one of the second cooling channels is respectively communicated with one of the third connection interfaces and one of the second connection interfaces, whereby the respective second cooling channels can be communicated via the connection joints by stacking the battery modules, and the capacity of the battery pack can be increased or decreased by stacking the battery modules.
Optionally, the battery module includes a first battery module and a second battery module.
The cooling plate and the battery modules are stacked in a first direction, and the first battery module and the second battery module are stacked in the first direction.
Optionally, the battery modules include a first battery module and a second battery module, the cooling plate and the battery modules are stacked along a first direction, and the first battery module and the second battery module are stacked along the first direction.
Optionally, the battery module includes first battery module and second battery module, cooling plate and battery module are along first direction superpose, and first battery module and second battery module set up along the second direction, the second direction perpendicular to first direction, second connection interface and third connection interface locate the casing is along the structural of the relative casing portion of second direction, and the cooling channel of the battery module between adjacent communicates, promotes the heat dissipation of battery module.
Optionally, the plurality of second cooling channels of the first battery module and the plurality of second cooling channels of the second battery module are connected in parallel or connected in series, and the battery pack has different heat dissipation paths by changing the connection relationship between the plurality of second cooling channels of the second battery module.
Optionally, the battery pack includes two second connection interfaces and two third connection interfaces, two the second connection interfaces one end of the housing, two the third connection interfaces set up in the opposite other end of the housing.
Optionally, the housing includes a housing portion and a partition plate, the housing portion is provided with an accommodating space, the partition plate is disposed in the accommodating space, the partition plate partitions the accommodating space into at least two cavities, and the partition plate includes the second cooling channel, the second connection interface, and the third connection interface. The heat of the battery cells on the two sides of the partition board can be dissipated by the partition board, so that one heat dissipation channel can dissipate the heat of the two battery cells at the same time.
An electrical device comprising: such as a load and the battery module according to any one of the above, the load being electrically connected with the battery module of the battery pack.
In order to solve the technical problems, the invention adopts a technical scheme that: there is provided an electric device comprising a battery pack as in any of the above embodiments.
In the embodiment of the invention, the first cooling channel is arranged on the cooling plate, the second cooling channel is arranged on the battery module, the first cooling channel is communicated with the second cooling channel through the connecting joint, so that the coolant can flow through the first cooling channel through the second cooling channel, the heat in the battery pack is transferred to the cooling plate, the heat of the battery pack is quickly taken away by the cooling plate, and the quick connection between the battery module and the cooling plate can be realized through the first cooling channel and the second cooling channel which are communicated through the connecting joint, so that the installation of the battery module is more convenient.
Drawings
Fig. 1 is an exploded schematic view of a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic sectional view of a battery pack according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic diagram of FIG. 3 with portions broken away;
fig. 5 is a perspective view of a cooling plate of a battery pack according to an embodiment of the present invention;
FIG. 6 is another schematic view of FIG. 5;
fig. 7 is an exploded view illustrating a battery module according to an embodiment of the present invention;
fig. 8 is a schematic view of a housing of the battery module of fig. 7;
fig. 9 is a perspective view of a housing of the battery module of fig. 7;
fig. 10 is a schematic view illustrating a connection relationship of second cooling channels arranged in a first direction between battery modules according to an embodiment of the present invention;
fig. 11 is a schematic view of a plug of a battery module according to an embodiment of the invention;
fig. 12 is a schematic view of a connection terminal of a battery pack according to an embodiment of the present invention;
FIG. 13 is a schematic view of a receiving slot formed in a cooling plate according to an embodiment of the present invention;
FIG. 14 is a schematic structural view of another embodiment of the connector fitting of the present invention;
fig. 15 is another schematic view of the structure of fig. 13.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.
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 this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, a battery pack 1 includes a cooling plate 10, a battery module 20, and a connection tab 30. The battery modules 20 are disposed on the cooling plate 10, and the connection tabs 30 connect the cooling plate 10 and the battery modules 20, so as to communicate the cooling passages of the battery modules 20 and the cooling plate 10, wherein the cooling plate 10 and the battery modules 20 are sequentially disposed along a first direction. In particular, the first direction, the second direction and the third direction are perpendicular to each other.
The cooling plate 10 is provided with a first cooling channel 101, a first connection interface 102, a housing groove 103, a coolant input port 104, and a coolant output port 105. The first connection port 102 and the receiving groove 103 are located on a side of the cooling plate 10 facing the battery module 20, the first connection port 102 is located at a bottom of the receiving groove 103, and the first connection port 102 is communicated with the first cooling channel 101. The receiving groove 103 is used for receiving the connecting terminal 30. The coolant input port 104 and the coolant output port 105 are respectively disposed at the head end and the tail end of the first cooling channel 101 and are both communicated with the first cooling channel 101, the coolant input port 104 is used for inputting coolant, and the coolant output port 105 is used for outputting coolant. In one embodiment, the battery pack 1 lowers the temperature of the battery pack 1 by inputting a coolant from a coolant input port 104 of the cooling plate 10 and then taking away the heat of the battery pack 1 through the first cooling passage 101, and the coolant output port 105 is used for outputting the coolant. Preferably, the coolant comprises water; according to other embodiments of the present application, the coolant may also include other liquid or gaseous coolants. Preferably, the cooling plate 10 is made of a heat-conductive material, such as aluminum or other composite materials, without limitation.
In some embodiments, a sidewall 106 extends around the cooling plate 10, and the sidewall 106 and the cooling plate 10 together enclose a receiving cavity 107, and the receiving cavity 107 is used for receiving the battery module 20. Preferably, the sidewalls 106 extend vertically from the periphery of the cooling plate 10. Preferably, the side wall 106 and the cooling plate 10 may be integrally formed, such as by an injection molding process. Preferably, the side wall 106 is detachably connected and fixed to the cooling plate 10, for example, by screws or the like.
In an embodiment, taking a battery module 20 as an example for description, please refer to fig. 7, 8 and 9, where the battery module 20 includes a housing 201 and a battery cell 202, the housing 201 is provided with a cavity 203, and the battery cell 202 is accommodated in the cavity 203. The housing 201 is provided with a second cooling channel 20121, a second connection interface 20122 and a third connection interface 20123, and the second connection interface 20122 and the third connection interface 20123 are both communicated with the second cooling channel 20121. Wherein one of the second connection port 20122 and the third connection port 20123 serves as an inlet of the second cooling channel 20121, and the other serves as an outlet of the second cooling channel 20121. One end of the connection joint 30 is connected to the first connection interface 102, and the other end of the connection joint 30 is connected to the second connection interface 20122, so that the first cooling channel 101 and the second cooling channel 20121 are communicated, heat generated by the battery cell 202 during operation can be transferred to the coolant in the second cooling channel 20121, and the coolant flows into the first cooling channel 101 from the second cooling channel 20121, so as to take away heat of the battery cell 202, and thus the battery cell 202 is cooled.
It is worth mentioning that: the second connection interface 20122 and the third connection interface 20123 may be disposed at the same end of the housing 201, or may be disposed at two ends of the housing 201, respectively, and the arrangement manner of the second connection interface 20122 and the third connection interface 20123 is not limited, and may be set according to actual needs. Illustratively, the number of the connection joints 30 and the number of the first connection interfaces 102 are plural, and the number of the connection joints 30 and the number of the first connection interfaces 102 correspond to each other in a one-to-one manner. When the second connection port 20122 and the third connection port 20123 are both disposed at the same end of the housing 201, the battery module 20 is accommodated in the accommodating cavity 107, the second connection port 20122 is connected to the first connection port 102 through one of the connection joints 30, and the third connection port 20123 is connected to the other first connection port 102 through the other connection joint 30, so that the coolant can flow into the first cooling channel 101 from the coolant output port 104, then flow into the second cooling channel 20121 through the first connection port 102 through the connection joint 30, and finally flow out from the coolant output port 105, so that the coolant flows through the second cooling channel 20121 from the first cooling channel 101 to take away heat generated by the battery module 20. In addition, a plurality of first connection ports 102 are arranged along the array of the first cooling channels 101, the number of the battery modules 20 is plural, and the plurality of battery modules 20 are all accommodated in the accommodating cavity 107, and at this time, the plurality of second cooling channels 20121 are independent from each other. It is understood that the number of the cooling plates 10 may be two, and when the number of the cooling plates 10 is two, the two cooling plates 10 are disposed to face each other, and only the coolant input port 104 is disposed on one of the cooling plates 10, and only the coolant output port 105 is disposed on the other cooling plate. In some embodiments, the second connection interface 20122 and the third connection interface 20123 are disposed at two opposite sides of the housing 201. Specifically, along the first direction, the second connection port 20122 is disposed at a side end of the housing 201, and the third connection port 20123 is disposed at the other opposite side end of the housing 201. The second connection port 20122 is connected to the first connection port 102 of one of the cooling plates 10 through one of the connection tabs 30, and the third connection port 20123 is connected to the first connection port 102 of the other of the cooling plates 10 through the other of the connection tabs 30, so that the coolant flows from the first cooling channel 101 of one of the cooling plates 10 provided with the coolant input port 104 into the second cooling channel 20121 of the battery module 20, then flows from the second cooling channel 20121 into the first cooling channel 101 of the other cooling plate 10 provided with the coolant output port 105, and finally is output from the coolant output port 105 of the cooling plate 10.
The number of the second connection interfaces 20122 and the number of the third connection interfaces 20123 are two, two of the second connection interfaces 20122 are arranged at one end of the shell 201, and two of the third connection interfaces 20123 are arranged at the other end of the shell 201. When the number of the battery modules 20 is one, one of the third connection ports 20123 serves as the module coolant input port 104, the other third connection port 20123 serves as the module coolant output port 105, and the two second connection ports 20122 provided at the other end of the housing 201 are sealed by the sealing member. Thus, when there is only one battery module 20, the second cooling channel 20121 can be fed from the module coolant inlet port 104 and then fed from the module coolant outlet port 105 by simply plugging the second connection ports 20122. When the battery pack 1 needs to be expanded, the number of the battery modules 20 is multiple, and different permutation and combination can be performed on the battery modules 20 to realize the expansion of the battery pack 1, for example: the plurality of battery modules 20 achieve the effect of capacity expansion along the second direction and the third direction, which is a single-layer capacity expansion scheme. Another example is: the plurality of battery modules 20 are stacked up and down along a first direction, then the stacked plurality of battery modules 20 are subjected to array expansion along a second direction and a third direction, which is a multi-layer expansion scheme, and at this time, the sealing member for the second connection interface 20122 is removed, so that the two second cooling channels 20121 of the two stacked battery modules 20 can be communicated. It is worth noting that the second cooling passage 20121 is fixed.
In some embodiments, when the plurality of battery modules 20 are disposed along the second direction and the third direction, the second connection ports 20122 and the third connection ports 20123 may be disposed on the structure of the opposite housing portions of the housing 201 along the second direction, and the cooling channels of the battery modules 20 between adjacent battery modules are communicated, so as to improve the heat dissipation of the battery modules.
In some embodiments, as shown in fig. 6 to 9, the housing 201 includes a housing portion 2011 and a partition 2012, the housing portion 2011 is provided with an accommodating space 2013, the partition 2012 is disposed in the accommodating space 2013, the accommodating space 2013 is partitioned by the partition 2012 to obtain at least two cavities 203, and the at least two cavities 203 are respectively used for accommodating the battery cells 202. The separator 2012 includes the second cooling channel 20121, the second connection interface 20122, and the third connection interface 20123, so that heat of the battery cells 202 on two sides of the separator 2012 can be dissipated by the separator 2012, and one heat dissipation channel can dissipate heat of two battery cells 202 at the same time. In some embodiments, the housing portion 2011 may also be provided with the second cooling channel 20121, the second connection interface 20122 and the third connection interface 20123, which is not limited.
In some embodiments, the second cooling passages 20121 are arranged in a curve in the partition 2012 such that the second cooling passages 20121 cover as much area of the partition 2012 as possible.
In some embodiments, the number of the second cooling channels 20121, the third connection ports 20123 and the second connection ports 20122 is multiple, and one of the second cooling channels 20121 is respectively communicated with one of the third connection ports 20123 and one of the second connection ports 20122, so that the partition 2012 has multiple second cooling channels 20121, wherein the multiple second cooling channels 20121 may be independent from each other or may be communicated with each other.
It is worth mentioning that: in addition to communicating the second connection ports 20122 with the first connection ports 102 of the cooling plate 10, the third connection ports 20123 may also communicate with the first cooling channels 101 of the cooling plate 10, so that the first cooling channels 101 and the second cooling channels 20121 of the battery pack 20 form a circulation loop, and an external refrigeration device directly communicates with the cooling plate coolant input port 104 and the cooling plate coolant output port 105 of the cooling plate 10; alternatively, an external refrigeration device is communicated with the third connection port 20123 and the first cooling channel 101 of the cooling plate 10, respectively, so that the coolant can be circulated among the refrigeration device, the first cooling channel 101, and the second cooling channel 20121.
In some embodiments, as shown in fig. 6, 9, 10, and 12, the battery module 20 includes a plurality of first battery modules 21 and a plurality of second battery modules 22. The first battery module 21 and the second battery module 22 are stacked in the first direction, the second connection interface 20122 of the first battery module 21 is communicated with the first connection interface 102 of the cooling plate 10 through the connection joint 30, the second connection interface 20123 of the second battery module 22 is connected with the third connection interface 20123 of the first battery module 21, so that the second cooling channel 20121 of the second battery module 22 is communicated with the second cooling channel 20121 of the first battery module 21, and the second cooling channel 20121 of the first battery module 21 is communicated with the cooling plate 10. In the present embodiment, the first battery module 21 is connected to the cooling plate 10, and in other embodiments, the second battery module 22 may be connected to the cooling plate 10. In other embodiments, the second battery module 22 or other battery modules may be stacked above the second battery module 22 along the first direction according to requirements, and the other battery modules are provided with a cooling channel structure connected with the second battery module 22, for example, the battery modules are provided with the same cooling channel structure, connection joints, and the like as the second battery module, which is convenient for installation.
In some embodiments, the battery pack 1 further includes a plug 31, please refer to fig. 10, 12 and 12, where the plug 31 includes a tube 311, one end of the tube 311 is plugged into the third connection interface 20123 of the first battery module 21, and the other end of the tube 311 is plugged into the second connection interface 20122 of the second battery module 22, so that the first battery module 21 and the second battery module 22 are communicated with the respective second cooling channels 20121 through the plug 31. In addition, the plug 31 further includes a limiting boss 312 extending from the outer surface of the tube body 311, the limiting boss 312 surrounds the tube body 311, when the plug 31 is connected to the third connection interface 20123 of the first battery module 21 and the second connection interface 20122 of the second battery module 22, the limiting boss 312 is accommodated in the third connection interface 30123 or the second connection interface 20122, and the limiting boss 312 can limit the plug 31 and limit the play of the plug 31, so that the plug 31 cannot be completely immersed in the third connection interface 20123 or the second connection interface 20122.
Further, the ends of the two ends of the tube body 311 are provided with sealing platforms 313, the sealing platforms 313 are made of rubber, and the diameter of the sealing platforms 313 is slightly larger than that of the tube body 313. The plug 31 can thus seal the third connection interface 20123 or the second connection interface 20122. The plug 31 connects the second cooling channel 20121 of the second battery module 22 with the second cooling channel 20121 of the first battery module 21, and the plug 31 connects the second cooling channel 20121 of the second battery module 22 with the second cooling channel 20121 of the first battery module 21, so that the tightness of the communication between the second cooling channel 20121 of the second battery module 22 and the second cooling channel 20121 of the first battery module 21 can be improved, and the disassembly of the second battery module 22 and the first battery module 21 is facilitated.
It should be noted that: when the battery module 20 in the battery pack 1 includes the first battery module 21 and the second battery module 22, and the second cooling passage 20121 in the battery module 20 is one, the second cooling passages 20121 of the first battery module 21 and the second battery module 22 may be connected in series. When the number of the second cooling channels 20121 in the battery module 20 is multiple, the second cooling channels 20121 of the first battery module 21 and the second cooling channels 20121 of the second battery module 22 may be connected in a one-to-one correspondence manner, so that the multiple second cooling channels 20121 of the first battery module 21 and the multiple second cooling channels 20121 of the second battery module 22 are connected in parallel.
The connector fitting 30 comprises a conduit 301 and a boss 302 extending from an outer surface of the conduit 301, the boss 302 surrounding the conduit 301. One end of the guide tube 301 is inserted into the first connection port 102, the other end of the guide tube 301 is inserted into the second connection port 20122, so that the first cooling channel 101 of the cooling plate 10 and the second cooling channel 20121 of the battery module 20 are connected through the connection joint 30, the boss 302 is fixed to the connection joint 30 through the receiving groove 103, and the connection joint 30 is limited from moving longitudinally so that the connection joint 30 enters the first connection port 102 or the second connection port 20122.
In some embodiments, the connection fitting 30 and the plug 3 are substantially identical.
In some embodiments, referring to fig. 4, fig. 5, fig. 12 and fig. 13, the battery pack 1 further includes an insulating ring 40, a side wall of the first connection port 102 is provided with an annular step 1031, the insulating ring 40 is disposed on the annular step 1031, one end of the conduit 301 is inserted into the first connection port 102, and a pipe wall of one end of the conduit 301 abuts against the insulating ring 40. After one end of the conduit 301 is plugged into the first connection port 102, the conduit 301 and the first connection port 102 are sealed by the insulating ring 40, so as to limit the coolant flowing out of the first connection port 102.
In some embodiments, referring to fig. 6, 9, 14 and 15, the insulating ring 40 includes a first insulating ring 401 and a second insulating ring 402. The first insulating ring 401 is sleeved between one end of the conduit 301 and the second connection port 20122, and is used for sealing the conduit 301 and the second connection port 20122. When a plurality of battery modules 20 are laid flat on the cooling plate 10, for example: a plurality of the battery modules 20 are disposed on the cooling plate 10 in the second direction and the third direction, and the first insulating ring 401 is used to seal the outer surface of one end of the conduit 301 with the inner surface of the third connection port 20123. The second insulating ring 402 is disposed at the other end of the conduit 301, and preferably, the first insulating ring 401 and the second insulating ring 402 are disposed at two axially opposite ends of the boss 302 along the conduit 301. The second insulating ring 402 serves to seal the outer surface of the other end of the conduit 301 with the inner surface of the first connection interface 102. The first insulating ring 401 and the second insulating ring 402 enable sealing of the connection of the catheter 301 with the first connection interface 102 and the second connection interface 20122. When a plurality of battery modules 20 are stacked, for example, a plurality of the battery modules 20 are laid on the cooling plate 10 in the second direction and the third direction, and are stacked in the first direction on the basis of this, the first insulating ring 401 and the second insulating ring 402 achieve sealing of the third connection port 20123 or the connection point of the third connection port 20123. In order to make the first insulating ring 401 and the second insulating ring 402 achieve better sealing effect, the connection joint 30 is further provided with a first slot 3011 and a second slot 3012, the first slot 3011 is disposed on one side of the boss 302 along the axial direction of the conduit 301, and the second slot 3012 is disposed on the other side of the boss 302 along the axial direction of the conduit 301. The first insulating ring 401 is disposed in the first slot 3011, and the first insulating ring 401 is partially received in the first slot 3011, and a portion of the first insulating ring 401 is exposed to the first slot 3011 and abuts against the side wall 106 of the second connection port. The second insulating ring 402 is disposed in the second slot 3012, and a portion of the second insulating ring 402 is received in the second slot 3012, and a portion of the second insulating ring 402 is exposed from the second slot 3012 and abuts against the sidewall 106 of the annular step 1031.
Furthermore, the catheter 301 is further provided with a third slot 3013, the third slot 3013 is disposed on the other side of the boss 302 away from the first slot 3011, and the third slot 3013 and the second slot 3012 are disposed at intervals. The insulating ring 40 further includes a third insulating ring 403, the third insulating ring 403 is sleeved in the third slot 3013, a part of the third insulating ring 403 is accommodated in the third slot 3013, and a part of the third insulating ring 403 is exposed in the third slot 3013 and abuts against a side wall of the first connection interface 102. The third insulating ring 403 is used to seal the outer surface of the other end of the conduit 301 to the inner surface of the first connection interface 102. The second insulating ring 402 and the third insulating ring 403 form a double seal on the inner surface of the first connection port 102, which further enhances the sealing performance between the conduit 301 and the first connection port 102.
In some embodiments, a surface of the cooling plate 10 is free of the receiving groove 103, the receiving groove 103 is disposed on a surface of the housing 201 where the second connection port 20122 or the third connection port 20123 is disposed, and the receiving groove 103 corresponds to the second connection port 20122 or the third connection port 20123. The sidewall of the first connection interface 102 is free of the annular step 1031, and the annular step 1031 is disposed on the sidewall of the second connection interface 20122 or the third connection interface 20123. When the first battery module 21 and the second battery module 22 are stacked, the second connection port 20122 of the first battery module 21 is communicated with the third connection port of the second battery module 22 through one of the connection tabs 30, the third connection port 20123 of the first battery module 21 is communicated with the first connection port 102 of one of the cooling plates 10 through one of the connection tabs 30, and the second connection port 20122 of the second battery module 22 is communicated with the first connection port 102 of the other cooling plate 10 through one of the connection tabs 30.
In some embodiments, the cooling channel and the connection interface structure of the battery pack are substantially the same to facilitate the installation of the battery module.
In the embodiment of the invention, the battery pack 1 is provided with the first cooling channel 101 on the cooling plate 10, the second cooling channel 20121 on the battery module 20, and the first cooling channel 101 is communicated with the second cooling channel 20121 through the connecting joint 30, so that the coolant can flow through the second cooling channel 20121 through the first cooling channel 101, the heat of the battery module 20 is rapidly taken away, and the thermal effect of the battery pack 1 is improved.
The present invention further provides an embodiment of an electric device, where the electric device includes the battery pack 1 according to any of the above embodiments, and please refer to the above embodiments for the structure and function of the battery pack 1, which is not described herein again.
It should be noted that the description of the present invention and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and is not limited to the embodiments described in the present specification, which are provided as additional limitations to the present invention and to provide a more thorough understanding of the present disclosure. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. A battery pack, comprising:
the cooling plate is provided with a first cooling channel, one surface of the cooling plate is provided with a first connecting interface, and the first connecting interface is communicated with the first cooling channel;
the battery module is provided with a second cooling channel and a second connecting interface, and the second connecting interface is communicated with the second cooling channel;
and one end of the connecting joint is connected with the first connecting interface, and the other end of the connecting joint is connected with the second connecting interface, so that the first cooling channel is communicated with the second cooling channel.
2. The battery pack according to claim 1,
the connection fitting includes a conduit and a boss extending from an outer surface of the conduit, the boss surrounding the conduit;
an accommodating groove is formed in one surface of the cooling plate, one end of the guide pipe is inserted into the first connecting port, the other end of the guide pipe is inserted into the second connecting port, and the boss is accommodated in the accommodating groove.
3. The battery pack of claim 2, further comprising an insulating ring;
the side wall of the first connecting interface is provided with an annular step, the insulating ring is arranged on the annular step, and the pipe wall of one end of the guide pipe is abutted to the insulating ring.
4. The battery pack according to claim 2,
the battery pack further comprises a first insulating ring and a second insulating ring, the first insulating ring is sleeved at one end of the guide pipe, and the first insulating ring is used for sealing the outer surface of one end of the guide pipe with the side wall of the first connecting interface;
the second insulating ring is sleeved at the other end of the catheter and used for sealing the outer surface of the other end of the catheter and the side wall of the second connecting interface.
5. The battery pack according to claim 4,
the connecting joint is also provided with a first groove and a second groove, and the first groove and the second groove are arranged on two opposite sides of the boss;
the first insulating ring part is contained in the first groove, part of the first insulating ring protrudes out of the first groove and is abutted against the side wall of the first connecting port, the second insulating ring part is contained in the second groove, part of the second insulating ring protrudes out of the second groove, and part of the second insulating ring protrudes out of the second groove and is abutted against the side wall of the second connecting port.
6. The battery pack of claim 5, further comprising a third insulating ring disposed around the conduit for sealing an outer surface of the other end of the conduit with a sidewall of the second connection interface, wherein the third insulating ring and the second insulating ring are spaced apart.
7. The battery pack according to any one of claims 1 to 6, wherein the battery module comprises a housing and a cell assembly, the housing is provided with a cavity, the cell assembly is accommodated in the cavity, and the second cooling channel and the second connecting interface are both arranged on the housing.
8. The battery pack according to any one of claims 1 to 6,
the battery module is also provided with a third connecting interface communicated with the second cooling channel, and the third connecting interface and the second connecting interface are respectively positioned at two opposite ends of the battery module;
the battery module comprises a first battery module and a second battery module, the first battery module and the second battery module are superposed, a second connecting interface of the first battery module is connected with the connecting joint, a second connecting interface of the second battery module is connected with a third connecting interface of the first battery module, and a second cooling channel of the second battery module is communicated with a second cooling channel of the first battery module.
9. The battery pack according to any one of claims 1 to 6,
the battery module is also provided with a third connecting interface communicated with the second cooling channel, and the third connecting interface and the second connecting interface are positioned at the same end of the battery module;
the number of the battery modules is multiple, the number of the first connecting interfaces and the number of the connecting joints are multiple, one is used for connecting the second connecting interfaces of the battery modules with the first connecting interfaces through one, the third connecting interfaces are communicated with the first connecting interfaces through one, and the first cooling channels are communicated with the second cooling channels.
10. The battery pack according to claim 8, wherein the number of the second cooling channel, the third connection port, and the second connection port is plural, and one of the second cooling channels is communicated with one of the third connection port and the second connection port, respectively.
11. An electrical device, comprising: the battery pack according to any one of claims 1 to 10, and a load electrically connected to a battery module of the battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110302746.8A CN113113712A (en) | 2021-03-22 | 2021-03-22 | Battery pack and electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110302746.8A CN113113712A (en) | 2021-03-22 | 2021-03-22 | Battery pack and electric equipment |
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| Publication Number | Publication Date |
|---|---|
| CN113113712A true CN113113712A (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110302746.8A Pending CN113113712A (en) | 2021-03-22 | 2021-03-22 | Battery pack and electric equipment |
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| CN (1) | CN113113712A (en) |
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| CN107210500A (en) * | 2015-04-27 | 2017-09-26 | 宝马股份公司 | Battery module and high tension battery |
| US20180040933A1 (en) * | 2015-09-15 | 2018-02-08 | Denso Corporation | Battery pack |
| CN209860115U (en) * | 2017-06-27 | 2019-12-27 | 株式会社Lg化学 | Battery module |
| CN210607415U (en) * | 2019-12-10 | 2020-05-22 | 北京车和家信息技术有限公司 | Battery module casing, battery module, battery package and vehicle |
| US20200295417A1 (en) * | 2018-01-23 | 2020-09-17 | Samsung Sdi Co., Ltd. | Coolant distribution interface for a battery module housing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107210500A (en) * | 2015-04-27 | 2017-09-26 | 宝马股份公司 | Battery module and high tension battery |
| US20180040933A1 (en) * | 2015-09-15 | 2018-02-08 | Denso Corporation | Battery pack |
| CN209860115U (en) * | 2017-06-27 | 2019-12-27 | 株式会社Lg化学 | Battery module |
| US20200295417A1 (en) * | 2018-01-23 | 2020-09-17 | Samsung Sdi Co., Ltd. | Coolant distribution interface for a battery module housing |
| CN210607415U (en) * | 2019-12-10 | 2020-05-22 | 北京车和家信息技术有限公司 | Battery module casing, battery module, battery package and vehicle |
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