CN209963187U - Lithium battery module heat dissipation air duct structure - Google Patents

Abstract

The utility model discloses a lithium battery module heat dissipation air channel structure, which comprises a heat dissipation air channel and an electric core support frame, wherein the two ends of the heat dissipation air channel are communicated; the heat dissipation air duct is connected in the battery cell support frame; the battery cell support frame is characterized in that a battery cell positioning groove matched with the battery cell is formed in the upper surface and/or the lower surface of the battery cell support frame, heat conduction holes are formed in the upper surface and/or the lower surface of the battery cell support frame, and the heat conduction holes are communicated with the heat dissipation air duct. The utility model effectively improves the overall heat dissipation effect of the battery module; through the sealed air channel, the air can circulate to quickly dissipate the heat in the battery, the temperature of the use environment is reduced, and the service performance and the service life of the battery core and the battery core module are better; the heat dissipation air duct and the interior of the battery are integrally isolated and sealed, so that the scheme can achieve a better effect when used in water; the production process is mature and reliable, the processing difficulty is low, the yield is high, and a good sealing and heat dissipation effect can be achieved under the condition of increasing lower cost.

Description

Lithium battery module heat dissipation air duct structure

Technical Field

The utility model relates to a battery energy technical field especially involves a lithium cell module heat dissipation wind channel structure.

Background

Along with the development of new energy equipment such as electric motor car, logistics robot, electric ship, the use of lithium cell is more and more extensive, and electric core capacity, output and battery load are bigger and bigger, and electric core quantity is also more and more, and company comes, and the inside heat of whole battery module is also higher and more, and the performance of battery module is influenced by the temperature deeply, how to control the battery module in reasonable temperature, makes its performance and life-span reach the optimum, and this has just provided higher requirement to the design in the aspect of the heat dissipation of electric core module.

The heat dissipation scheme of present common battery module is mostly natural heat dissipation, be fixed in a support electric core inslot with electric core group, can give electric core self and the natural heat dissipation space of air contact after the assembly, electric core equipment is assembled the back, with upper bracket and lower carriage make-up, the double-screw bolt locking that uses the screw to correspond the support forms wholly, the nickel piece assembles and carries out spot welding with electric core in the nickel piece inslot and is connected, the battery module uses, the electric current passes through electric core, the nickel piece, behind the control panel, concentrate the production of heat, because the group battery has assembled in the casing, its thermal transmission can only be transmitted through group battery and casing inside air, the absorptive heat of casing transmits with casing external environment again, with this heat dissipation function that reaches whole battery module. This solution is a common design solution and has several disadvantages: 1. under the environment of long-time work, the heat inside the battery module is higher and higher, if the heat cannot be quickly transferred, the battery pack can continuously work under the high-temperature environment, and the service life of the whole battery module is inevitably reduced; 2. as a critical heat generation source within the battery module: the nickel piece, because its and electric core surface direct contact, if unable effectual quick transmission goes out of its heat, the heat of that nickel piece can directly transmit to electric core end, not only reduces the life-span of monomer electric core, more influences the performance of monomer electric core simultaneously, and to the group battery that electric core quantity is more, the influence that its performance received is bigger.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the weak point among the above-mentioned prior art and provide a simple structure, convenient operation, practical lithium cell module heat dissipation wind channel structure.

The utility model discloses a realize through following mode:

a lithium battery module heat dissipation air duct structure comprises a heat dissipation air duct and a battery cell support frame, wherein the two ends of the heat dissipation air duct are communicated; the heat dissipation air duct is connected in the battery cell support frame; the battery cell support frame is characterized in that a battery cell positioning groove matched with the battery cell is formed in the upper surface and/or the lower surface of the battery cell support frame, heat conduction holes are formed in the upper surface and/or the lower surface of the battery cell support frame, and the heat conduction holes are communicated with the heat dissipation air duct.

Furthermore, fins are formed by extending the two sides of the heat dissipation air duct outwards respectively, and a plurality of positioning holes are formed in the fins at intervals.

Furthermore, the heat dissipation air duct is integrated with the battery cell support frame into a whole by adopting an encapsulation injection molding process.

Furthermore, both ends of the heat dissipation air duct are respectively connected with a sealing and waterproof mechanism, the sealing and waterproof mechanism comprises an air duct waterproof cover matched with the shell, and a sealing glue groove matched with the air duct waterproof cover is arranged on the shell.

Further, a sealing ring is arranged between the joint of the air duct waterproof cover and the shell.

The beneficial effects of the utility model reside in that: the overall heat dissipation effect of the battery module is effectively improved; through the sealed air channel, the air can circulate to quickly dissipate the heat in the battery, the temperature of the use environment is reduced, and the service performance and the service life of the battery core and the battery core module are better; the heat dissipation air duct and the interior of the battery are integrally isolated and sealed, so that the scheme can achieve a better effect when used in water; the production process is mature and reliable, the processing difficulty is low, the yield is high, and a good sealing and heat dissipation effect can be achieved under the condition of increasing lower cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the structure of the present invention;

FIG. 4 is a view showing a usage state of the present invention;

fig. 5 is a schematic view of the waterproof sealing mechanism of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

a lithium battery module heat dissipation air duct structure is shown in figures 1 and 2 and comprises a heat dissipation air duct 1 and a battery cell support frame 2, wherein two ends of the heat dissipation air duct 1 are communicated, two sides of the heat dissipation air duct 1 respectively extend outwards to form fins 3, and a plurality of positioning holes 4 are formed in the fins 3 at intervals; the heat dissipation air duct 1 is connected into the battery cell support frame 2, and the heat dissipation air duct 1 is integrated with the battery cell support frame 2 into a whole by adopting a rubber coating injection molding process; the positioning holes 4 of the fins 3 on the heat dissipation air duct 1 can enable the two to be better integrated together, and the strength is higher; the upper surface and/or the lower surface of electric core support frame 2 are equipped with electric core 5 matched with electric core constant head tank 21, the upper surface and/or the lower surface of electric core support frame 2 are equipped with heat conduction hole 22, in order to better reach the heat dissipation, heat conduction hole 22 is located electric core constant head tank 21, heat conduction hole 22 communicates with each other with heat dissipation wind channel 1, can let the better laminating in surface of electric core 5 and heat dissipation wind channel 1 together in surface, with the better conduction of heat on heat dissipation wind channel 1 to the circulation of air in the wind channel is gone out the heat conduction.

Further, the heat dissipation air duct 1 is characterized in that at least 1 closed annular channel is arranged in the cross section, more than 1 positioning fin is designed on the outer side of the heat dissipation air duct, and a plurality of positioning holes are designed on the fins; the heat dissipation air duct 1 is made of a high heat conduction material, can be made of metal or nonmetal, is preferably made of an aluminum alloy material and is formed by extrusion processing under the current production process conditions, and is good in heat conduction, mature in process and low in strength cost.

Furthermore, the battery cell support frame 2 is mainly used for assisting the heat dissipation air duct 1 to position the battery cell 5, and insulating and isolating the heat dissipation air duct 1 made of metal material to avoid the internal contact short circuit of the battery; the appearance structure of the cell support frame 2 is changed, and the scheme can be applied to other appearance cell groups without being limited to cylindrical cells.

In specific implementation, as shown in fig. 3, the heat dissipation air duct scheme can be flexibly stacked and expanded, so that parallel heat dissipation of more cells is realized; the battery core group with the heat dissipation air duct is the same as a common scheme, and the battery core fireproof barrels can be assembled on two sides of the battery core or on the upper side and the lower side of the battery core, so that the strength of the battery core module is enhanced, and the shock resistance of the battery core group is improved.

Specifically, as shown in fig. 4 and 5, when the lithium battery module heat dissipation air duct structure is assembled with the casing 6, two ends of the heat dissipation air duct 1 are respectively connected with a sealing waterproof mechanism, the sealing waterproof mechanism includes an air duct waterproof cover 7 matched with the casing 6, and the casing 6 is provided with a sealing glue groove 61 matched with the air duct waterproof cover 7; a sealing ring 62 is arranged between the joint of the air duct waterproof cover 7 and the shell 6; the electric core group is placed in the shell 6, the air duct waterproof cover 7 is matched with the sealing ring 62, the ventilation opening of the whole air duct is sealed and isolated from the inside of the battery, the inside of the battery is completely waterproof, and the use safety of the battery is improved. Furthermore, a sealing rubber groove 61 can be additionally designed at the ventilation opening of the air duct waterproof cover 7 and the heat dissipation air duct 1, and a double-adhesive joint is added to prevent water in the waterproof sealing state of the sealing ring, so that the air duct waterproof cover is safer.

In specific implementation, as shown in fig. 4 and 5, the heat dissipation air duct 1 and the battery cell support frame 2 are encapsulated to form an integral heat dissipation support, the battery cell 5 is placed on the battery cell support frame 2 for positioning, the battery cell 5 is in contact with the surface of the heat dissipation air duct 1, and the positive electrode and the negative electrode of the battery cell 5 are connected by using nickel sheet spot welding to form a series-parallel battery pack; after the battery pack and the battery cell fireproof barrel are assembled, a battery module is formed; the battery module is placed in the shell 6, the shell 6 is provided with a sinking platform position which is assembled with the air duct waterproof cover 7, the positions of the sinking platform position correspond to the ventilation openings of the heat dissipation air duct 1 one by one, the sealing rings 62 are placed at the ventilation openings of the battery cell support frame 2 and the corresponding positions of the sinking platform of the lower shell, and after the air duct waterproof cover 7 is assembled, the sealing rings 62 are extruded and deformed to achieve the waterproof sealing effect; in addition, a sealing rubber groove 61 can be additionally designed at the ventilation opening of the air duct waterproof cover 7 and the heat dissipation air duct 1, and a double-rubber joint is added for water prevention under the waterproof sealing state of the sealing ring, so that the air duct waterproof cover is safer; the sealing groove is designed between the upper shell and the lower shell, and the overall sealing of the shell can be realized by placing a sealing ring or sealing glue and the like.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a lithium cell module heat dissipation wind channel structure which characterized in that: comprises a heat dissipation air duct (1) and a battery cell support frame (2) which are communicated with each other at two ends; the heat dissipation air duct (1) is connected in the battery cell support frame (2); and the upper surface and/or the lower surface of the battery cell support frame (2) is/are provided with a battery cell positioning groove (21) matched with the battery cell (5).

2. The lithium battery module heat dissipation air duct structure of claim 1, characterized in that: the upper surface and/or the lower surface of the battery cell support frame (2) are/is provided with heat conduction holes (22), and the heat conduction holes (22) are communicated with the heat dissipation air duct (1).

3. The lithium battery module heat dissipation air duct structure of claim 1, characterized in that: and fins (3) are respectively formed by extending the two sides of the heat dissipation air duct (1) outwards.

4. The lithium battery module heat dissipation air duct structure of claim 3, characterized in that: and a plurality of positioning holes (4) are arranged on the fins (3) at intervals.

5. The lithium battery module heat dissipation air duct structure of claim 1, characterized in that: the heat dissipation air duct (1) is integrated with the battery cell support frame (2) into a whole by adopting an encapsulation injection molding process.

6. The lithium battery module heat dissipation air duct structure of claim 1, characterized in that: the both ends in heat dissipation wind channel (1) are connected with waterproof sealing mechanism respectively, waterproof sealing mechanism includes wind channel waterproof cover (7) with casing (6) matched with, be equipped with on casing (6) with wind channel waterproof cover (7) matched with sealant groove (61).

7. The lithium battery module heat dissipation air duct structure of claim 6, characterized in that: and a sealing ring (62) is arranged between the joint of the air duct waterproof cover (7) and the shell (6).

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