Mineral insulation heating cable with pipeline for heating and cooling new energy automobile battery pack

Abstract

The insulating heating cable sequentially comprises an outer sheath, an insulating layer, a heating wire core and a pipeline from outside to inside, the insulating layer is a single crystal alpha-Si3N4 ceramic column, the insulating heating cable further comprises a battery pack shell and a bottom plate matched with the battery pack shell, a battery core is installed in the battery pack shell, the battery pack shell is provided with an interlayer groove and a sealing plate, and the interlayer groove is communicated with the pipeline. S-shaped grooves and V-shaped grooves which are continuously and uniformly distributed are formed in the upper end face of the bottom plate, the V-shaped grooves and the S-shaped grooves are mutually staggered, insulating heating cables are embedded in the S-shaped grooves and form a plate type whole with the bottom plate, cable clamping plates are embedded in interlayer grooves, the S-shaped grooves which are continuously and uniformly distributed are formed in the cable clamping plates, and the V-shaped grooves and the S-shaped grooves are mutually staggered. The insulating heating cable is embedded in the snake-shaped groove and forms a frame type whole with the cable clamping plate, and the section of the snake-shaped groove is of a 180-225-degree circular arc structure. According to the utility model, the working efficiency and the safety of the battery pack are improved, and the high requirement of a new energy automobile on a battery management system is also met.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, especially a new energy automobile battery package heating and cooling with mineral insulation heating cable with pipeline. BACKGROUND

[0002] With the vigorous promotion of new energy vehicles, the safety requirements of automobile power batteries are also constantly improved and perfected, due to the characteristics of lithium ion batteries, the ideal working temperature is between 0-45 DEG C, the battery performance will be greatly discounted when the temperature is less than 0 DEG C, even cannot charge normally, the battery is easy to have thermal runaway when the temperature is greater than 45 DEG C, even will explode and fire when greater than 75 DEG C.

[0003] The existing lithium battery heating methods mainly have: 1, the charger carries out heating, and the charger can only carry out small rate discharging heating in low temperature environment. Therefore, it takes about 2-5 hours to slowly heat, and then charging can be carried out, and the safety is high. The defect is that this method can only be used in fixed place and the preheating time is long. 2, heating sheet heating, this kind of heating sheet low temperature heating method is to paste corresponding heating sheet on the side of the battery, and then connect and control through the protection plate. The heat generated by the heating sheet is directly transferred to the battery, and the resistance is increased with the increase of temperature, so as to realize the purpose of heating. The defect of this kind of low temperature heating method is that the number of electric heating elements and joints required is large, the failure rate is high, and the overall technical content is low.

[0004] The existing lithium battery cooling methods mainly have: 1, using air convection, relying on vehicle speed natural convection or using fan to produce forced convection to take away the heat of the battery, the structure is simple. The defect is that the space of the automobile is limited, the various arrangement structures of the battery pack are compact, the part in the center is poor in contact with the outside world, and the cooling effect is not obvious. When the battery discharge reaches a certain degree and the outside environment temperature is high, even if the wind speed is increased, the battery temperature cannot continue to drop, and the cooling amplitude is limited. 2, using liquid exchange, the liquid cooling effect is stronger than air cooling. The defect is that the structure is more complex, the liquid that can directly contact with the battery generally has poor flow performance, and the heat transfer effect is not ideal. And many liquids cannot directly contact with the battery, need to be wrapped up, and arranging pipes between the batteries will greatly occupy the battery pack space and reduce the battery capacity. Utility model content

[0005] In order to more effectively realize the heat preservation and heat dissipation of the battery, solve the problems existing in the temperature control components of the existing lithium battery, the utility model provides a new type of mineral insulation heating cable structure and mounting structure of new energy automobile battery package heating and cooling with mineral insulation heating cable integrated with pipeline mineral insulation heating cable.

[0006] The utility model discloses a new energy automobile battery pack heating and cooling with pipeline mineral insulation heating cable, the insulation heating cable from outside to inside includes outer sheath, insulating layer, heating wire core and pipeline in proper order, the insulating layer is single crystal alpha -Si3N4 ceramic column, still include battery pack shell and with the cooperation of the bottom plate of battery pack shell, install the electric core in battery pack shell, the battery pack shell is provided with interlayer groove and sealing plate, the bottom plate upper end face is opened the serpentine groove and V type groove of uniform arrangement in succession, V type groove and serpentine groove are interlaced, the insulation heating cable is embedded in serpentine groove and forms the board type whole with the bottom plate, the interlayer groove is embedded with cable mounting clamping plate, the cable mounting clamping plate is opened the serpentine groove of uniform arrangement in succession, the insulation heating cable is embedded in serpentine groove and forms the frame type whole with cable mounting clamping plate, the serpentine groove cross section is 180~225 ° arc structure.

[0007] As preferred, the serpentine groove on the bottom plate extends from the same corner of the bottom plate to the outside of the bottom plate at both ends.

[0008] As preferred, the serpentine groove on the cable mounting clamping plate extends from the same corner of the battery pack shell to the outside of the battery pack shell at both ends.

[0009] As preferred, the wiring end of the insulation heating cable on the bottom plate extends to the outside of the bottom plate, and the wiring end is connected with a control module.

[0010] As preferred, the wiring end mounting hole is arranged on the bottom plate corresponding to the positions of both extending ends of the serpentine groove of the cable mounting clamping plate, the wiring end of the insulation heating cable on the cable mounting clamping plate extends to the outside of the bottom plate through the wiring end mounting hole, and the wiring end is connected with the control module.

[0011] The utility model discloses a new energy automobile battery pack heating and cooling with pipeline mineral insulation heating cable, the insulation heating cable from outside to inside includes outer sheath, insulating layer, heating wire core and pipeline in proper order, the insulating layer is single crystal alpha -Si3N4 ceramic column, still include battery pack shell and with the cooperation of the bottom plate of battery pack shell, install the electric core in battery pack shell, the battery pack shell is provided with interlayer groove and sealing plate, the bottom plate upper end face is opened the serpentine groove and V type groove of uniform arrangement in succession, V type groove and serpentine groove are interlaced, the insulation heating cable is embedded in serpentine groove and forms the board type whole with the bottom plate, the interlayer groove is embedded with cable mounting clamping plate, the cable mounting clamping plate is opened the serpentine groove of uniform arrangement in succession, the insulation heating cable is embedded in serpentine groove and forms the frame type whole with cable mounting clamping plate, the serpentine groove cross section is 180~225 ° arc structure. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 The utility model discloses a new energy automobile battery pack heating and cooling with pipeline mineral insulation heating cable, the insulation heating cable from outside to inside includes outer sheath, insulating layer, heating wire core and pipeline in proper order, the insulating layer is single crystal alpha -Si3N4 ceramic column, still include battery pack shell and with the cooperation of the bottom plate of battery pack shell, install the electric core in battery pack shell, the battery pack shell is provided with interlayer groove and sealing plate, the bottom plate upper end face is opened the serpentine groove and V type groove of uniform arrangement in succession, V type groove and serpentine groove are interlaced, the insulation heating cable is embedded in serpentine groove and forms the board type whole with the bottom plate, the interlayer groove is embedded with cable mounting clamping plate, the cable mounting clamping plate is opened the serpentine groove of uniform arrangement in succession, the insulation heating cable is embedded in serpentine groove and forms the frame type whole with cable mounting clamping plate, the serpentine groove cross section is 180~225 ° arc structure.

[0013] Fig. 2The utility model discloses a disassembling schematic view of battery pack,

[0014] Fig. 3 The utility model discloses the installation structure diagram of mineral insulated cable 8 of taking pipeline of the utility model,

[0015] In the drawing: 1, outer sheath, 2, insulation layer, 3, heating wire core, 4, pipeline, 5, battery pack shell, 5-1, interlayer groove, 6, bottom plate, 7, electric core, 8, sealing plate, 9, serpentine groove, 10, V-shaped groove, 11, insulated heating cable, 12, cable clamping plate. Specific implementation:

[0016] Combine with the drawing Figs. 1-3 Further illustrate the new energy automobile battery pack heating and cooling with mineral insulated heating cable of taking pipeline of the utility model.

[0017] The utility model discloses a special cable structure and installation structure, can realize efficient heating while integration heat dissipation pipeline, so that a component can satisfy the demand of lithium battery's heat dissipation and heating two kinds of working conditions, a new energy automobile battery pack heating and cooling with mineral insulated heating cable of taking pipeline, the insulated heating cable from outside to inside includes outer sheath 1, insulation layer 2, heating wire core 3 and pipeline 4 in proper order, and the insulation layer is single crystal alpha - Si3N4 ceramic column, still include battery pack shell 5 and the bottom plate 6 that cooperates with battery pack shell 5, and the electric core 7 is installed in battery pack shell 5, and battery pack shell 5 is provided with interlayer groove 5-1 and sealing plate 8, and the upper end surface of bottom plate 6 is provided with the serpentine groove 9 and V-shaped groove 10 of continuous and uniform arrangement, and the V-shaped groove 10 and serpentine groove 9 are interlaced, and the insulated heating cable 11 is embedded in serpentine groove 9 and forms the board type whole with bottom plate 6, and the cable clamping plate 12 is embedded in interlayer groove 5-1, and the serpentine groove 9 of continuous and uniform arrangement is seted up on cable clamping plate 12, and the insulated heating cable 11 is embedded in serpentine groove 9 and forms the frame type whole with cable clamping plate 12, and the cross section of serpentine groove 9 is 180 ° ~ 225 ° circular arc structure.

[0018] Further, the serpentine groove 9 on the bottom plate 6 extends out of the bottom plate 6 from the same angular position on the bottom plate 6.

[0019] Further, the serpentine groove 9 on the cable clamping plate 12 extends out of the battery pack shell 5 from the same angular position on the battery pack shell 5 near the bottom plate 6.

[0020] Further, the connection end of the insulated heating cable 11 on the bottom plate 6 extends out of the bottom plate 6, and the connection end is connected with a control module.

[0021] Further, the bottom plate 6 is provided with a terminal mounting hole corresponding to the position of the two extending ends of the serpentine groove 9 of the cable clamping plate 12, and the terminal of the insulated heating cable 11 on the cable clamping plate 12 extends out of the bottom plate 6 through the terminal mounting hole and is connected to the control module.

[0022] The above merely describes the preferred embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

Claims

1. A new energy vehicle battery pack heating and cooling with pipeline mineral insulated heating cable, characterized in that: The insulation heating cable comprises, from outside to inside, an outer sheath, an insulation layer, a heating wire core and a pipeline, the insulation layer is a single-crystal alpha-Si3N4 ceramic column, further comprises a battery pack shell and a bottom plate matched with the battery pack shell, the battery pack shell is internally provided with battery cells, the battery pack shell is provided with a sandwich groove and a sealing plate, the bottom plate is provided with a continuous and uniform arrangement of serpentine grooves and V-shaped grooves on the upper end face, the V-shaped grooves and the serpentine grooves are staggered with each other, the insulation heating cable is embedded in the serpentine grooves and forms a plate-type whole with the bottom plate, the sandwich groove is embedded with a cable clamping plate, the cable clamping plate is provided with a continuous and uniform arrangement of serpentine grooves, the insulation heating cable is embedded in the serpentine grooves and forms a frame-type whole with the cable clamping plate, and the serpentine grooves are in a 180°-225° arc structure.

2. The mineral insulated heating cable with pipe for heating and cooling of battery pack of new energy vehicle according to claim 1, characterized in that, The serpentine grooves on the bottom plate extend out of the bottom plate from the same circumferential angle of the bottom plate.

3. The mineral insulated heating cable with pipe for heating and cooling of battery pack of new energy vehicle according to claim 1, characterized in that, The serpentine grooves on the cable clamping plate extend out of the battery pack shell from the same circumferential angle of the battery pack shell close to the bottom plate.

4. The mineral insulated heating cable with pipe for heating and cooling of battery pack of new energy vehicle according to claim 1, characterized in that, The wiring end of the insulation heating cable on the bottom plate extends out of the bottom plate and is connected with a control module.

5. The new energy vehicle battery pack heating and cooling with a pipeline mineral insulated heating cable according to claim 3, characterized in that, The bottom plate is provided with a wiring end mounting hole corresponding to the two extension ends of the serpentine grooves of the cable clamping plate, the wiring end of the insulation heating cable on the cable clamping plate extends out of the bottom plate through the wiring end mounting hole and is connected with the control module.

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