阅读说明：本技术 一种内部灌胶的锂离子电池包 (A kind of lithium ion battery packet of internal encapsulating ) 是由 朱运征 徐帆 于 2019-08-26 设计创作，主要内容包括：本发明公开了一种内部灌胶的锂离子电池包,电池组单元设置在外壳内部且位于所述锂离子电池包的下部,外壳与电池组单元之间形成灌封腔体,外壳上设有电池输入接口和电池输出接口,电池组单元的正负端电极分别与电池输入接口和电池输出接口相连,外壳上端设置有灌胶口,灌胶口与电池组单元连通,灌封腔体内填充有吸热导热灌封胶,吸热导热灌封胶对电池组单元形成包裹状态,电池管理系统、电池输入接口和电池输出接口均放置在所述灌封胶包裹界面的上方。本发明实现了电池包牢固的固定方式,具有减震抗压、散热良好,绝缘阻燃,防潮防水等功能。(The invention discloses a kind of lithium ion battery packets of internal encapsulating, battery assembly module setting is inside the housing and positioned at the lower part of the lithium ion battery packet, encapsulating cavity is formed between shell and battery assembly module, shell is equipped with battery input interface and battery output interface, the positive and negative termination electrode of battery assembly module is connected with battery input interface and battery output interface respectively, upper shell is provided with encapsulating mouth, encapsulating mouth is connected to battery assembly module, heat absorption conductive casting glue is filled in encapsulation cavity body, heat absorption conductive casting glue forms package status to battery assembly module, battery management system, battery input interface and battery output interface are both placed in the top at casting glue package interface.The present invention realizes battery pack and mode is firmly fixed, and has damping compression-resistant, heat dissipation good, flame-resistant insulation, the functions such as moistureproof and waterproof.)

1. a kind of lithium ion battery packet of internal encapsulating, which is characterized in that the electricity including connecting formation in series and parallel by battery cell Pond group unit, battery management system, harness, connection terminal, heat absorption conductive casting glue and shell, the battery assembly module setting exist Interior of shell and the lower part for being located at the lithium ion battery packet, form encapsulating cavity, institute between the shell and battery assembly module Shell is stated equipped with battery input interface and battery output interface, the positive and negative termination electrode of the battery assembly module is defeated with battery respectively Incoming interface is connected with battery output interface, and the upper shell is provided with encapsulating mouth, and the encapsulating mouth is connected to battery assembly module, Heat absorption conductive casting glue is filled in the encapsulation cavity body, the heat absorption conductive casting glue forms battery assembly module parcel-like State, the battery management system, battery input interface and battery output interface are both placed in the upper of casting glue package interface Side.

2. the lithium ion battery packet of internal encapsulating according to claim 1, which is characterized in that the heat absorption conductive casting glue Thermal coefficient after solidification is 0.6~1.0W/ (mK).

3. the lithium ion battery packet of internal encapsulating according to claim 1, which is characterized in that the heat absorption conductive casting glue Fire-protection rating after solidification is UL-V0 grades.

4. the lithium ion battery packet of internal encapsulating according to claim 1, which is characterized in that the heat absorption conductive casting glue Raw material include: compound aluminium hydroxide, phase-change material PCM-1, filler, dispersing agent and other additives.

5. the lithium ion battery packet of internal encapsulating according to claim 4, which is characterized in that the original of heat absorption conductive casting glue Material includes: compound aluminium hydroxide 40-50 parts, 13-20 parts of phase-change material PCM-1,5-15 parts of graphene, dimethyl by weight 10-20 parts of silicone oil and 5-20 parts of other additives.

6. the lithium ion battery packet of internal encapsulating according to claim 4, which is characterized in that other described additives include Auxiliary agent, catalyst, curing agent and fire retardant, wherein auxiliary agent is gamma-aminopropyl-triethoxy-silane, three ('beta '-methoxy of vinyl Ethyoxyl) silane, γ-methacryloxy aminopropyl trimethoxysilane, one of vinyltrimethoxysilane or Two or more compositions.

7. the lithium ion battery packet of internal encapsulating according to claim 6, which is characterized in that the fire retardant is hydroxide Aluminium, magnesium hydroxide, triphenylphoshonate, hexaphenoxycyclotriphosphazene one or more kinds of compositions.

8. the lithium ion battery packet of internal encapsulating according to claim 6, which is characterized in that the catalyst is platinum-alkene One or more of base complex, platinum-carbonyl complex composition.

9. the lithium ion battery packet of internal encapsulating according to claim 6, which is characterized in that the curing agent contains for methyl Hydrogen silicone oil.

[technical field]

The present invention relates to a kind of lithium ion battery packets of internal encapsulating.

[background technique]

Power Component of the lithium battery as electric car, durings electric car charge and discharge, colliding, paddling etc., Lithium battery by system play, squeeze, and cause battery short circuit, cracking, electric leakage, thermal shock, explosion, burning phenomena such as, because This, needs preferable fixed form that lithium battery is fixed, and in the prior art, lithium battery adopts the side mostly fixed with structural member Formula, structural member is more, and fixed form is complicated, and the fixed form of structural member cannot achieve the heat absorption to battery assembly module and dissipate Heat can not also play heat shock resistance and fire-retardant effect, can not play the protective effect to battery pack, cause battery pack because burning It ruins, is unable to satisfy demand in actual use.

Chinese patent application document " a kind of encapsulating power battery pack and lithium ion battery packet (application publication number: CN208478442U a kind of encapsulating power battery pack and lithium ion battery packet) " are disclosed, wherein encapsulating power battery pack includes Module case, multiple lithium batteries and casting glue, wherein module case has an accommodating chamber in it, and multiple lithium batteries prolong in upward and downward Setting is stretched, and to form battery assembly module by going here and there and/or being connected in parallel, battery assembly module is set in accommodating chamber and interval accommodating chamber Inner wall setting, casting glue is filled in accommodating chamber, and in package battery assembly module setting, battery assembly module to be fixed on Module case.The inner wall of battery assembly module interval accommodating chamber is arranged, so that encapsulating glue connection is used between battery assembly module and module case, Although the battery pack has used casting glue to carry out the encirclement of battery assembly module, the casting glue heat absorption conductive performance is bad, nothing The needs of method meets in actual use.

Chinese patent application document " it is a kind of convenient for equalized maintenance lithium-ion-power cell packet (application publication number: CN108933209A) " disclose a kind of lithium-ion-power cell packet convenient for equalized maintenance, including shell, the shell it is upper End is fixedly connected with upper cover, and battery modules are fixedly connected in the shell, and the battery modules pass through thermally conductive casting glue and shell Body encapsulating, the battery modules are connected with balanced acquisition harness, and the shell is equipped with equalized maintenance hole, the equalized maintenance hole Side wall on be fixedly connected with balanced change-over panel, the equilibrium pinboard includes pcb board, is fixedly connected on the pcb board Weighing apparatus maintenance terminal and balanced input terminal, one end of the balanced acquisition harness are connect with balanced input terminal, the balanced dimension Balance protection lid is equipped at guard aperture.Although the battery pack is able to carry out equalized maintenance, realization the heat of battery core is carried out it is lost, Be its casting glue heat absorption conductive performance it is bad, be unable to satisfy demand in actual use.

[summary of the invention]

The present invention provides a kind of lithium ion battery packet of internal encapsulating, to solve battery pack encapsulating encirclement in the prior art The bad problem of heat absorption conductive performance.

In order to solve the above technical problems, the invention adopts the following technical scheme:

A kind of lithium ion battery packet of internal encapsulating, including connected in series and parallel by battery cell formation battery assembly module, Battery management system, harness, connection terminal, heat absorption conductive casting glue and shell, the battery assembly module setting is inside the housing And it is located at the lower part of the lithium ion battery packet, encapsulating cavity is formed between the shell and battery assembly module, on the shell Equipped with battery input interface and battery output interface, the positive and negative termination electrode of the battery assembly module respectively with battery input interface and Battery output interface is connected, and the upper shell is provided with encapsulating mouth, and the encapsulating mouth is connected to battery assembly module, the encapsulating Heat absorption conductive casting glue is filled in cavity, the heat absorption conductive casting glue forms package status, the electricity to battery assembly module Pond management system, battery input interface and battery output interface are both placed in the top at casting glue package interface.

Further, the thermal coefficient after the heat absorption conductive encapsulating adhesive curing is 0.6~1.0W/ (mK).

Further, the fire-protection rating after the heat absorption conductive encapsulating adhesive curing is UL-V0 grades.

Further, the raw material of the heat absorption conductive casting glue includes: compound aluminium hydroxide, phase-change material PCM-1, fills out Material, dispersing agent and other additives.

Further, the raw material of heat absorption conductive casting glue includes: compound aluminium hydroxide 40-50 parts, phase transformation material by weight PCM-1 13-20 parts of material, 5-15 parts of graphene, 10-20 parts of dimethicone and 5-20 parts of other additives.

Further, other described additives include auxiliary agent, catalyst, curing agent and fire retardant, and wherein auxiliary agent is γ-ammonia Propyl-triethoxysilicane, vinyl three ('beta '-methoxy ethyoxyl) silane, γ-methacryloxy aminopropyl trimethoxy One or more of silane, vinyltrimethoxysilane composition.

Further, the fire retardant is aluminium hydroxide, magnesium hydroxide, triphenylphoshonate, hexaphenoxycyclotriphosphazene One or more kinds of compositions.

Further, the catalyst is one or more of platinum-alkenyl complex compound, platinum-carbonyl complex group Close object.

Further, the curing agent is Methyl Hydrogen Polysiloxane Fluid.

The invention has the following advantages:

(1) package of battery unit is realized by battery pack, mode is firmly fixed by heat absorption conductive casting glue, had and subtract Shake resistance to compression, heat dissipation well, flame-resistant insulation, the functions such as moistureproof and waterproof.

(2) there is casting glue splendid anti-flammability, good thermal conductivity and lower density to guarantee that the energy of battery is close Degree, casting glue provide the protection such as waterproof, damping for battery pack, are conducive to battery and radiate, guarantee battery pack thermal balance, in casting glue Phase-change material is added, the heat of battery can be absorbed when reaching certain condition, avoid battery thermal runaway.

(3) for casting glue using end-vinyl dimethyl silicone polymer as base-material, chloroplatinic acid complex is catalyst, adds phase transformation The organic silicon potting adhesive containing phase-change material is made in material, and casting glue can be undergone phase transition at 60~70 DEG C, and absorbs a large amount of heat Amount.Applied to the encapsulating of lithium battery group, the heat dissipation of fail battery can be effectively facilitated, to effectively promote the safety of battery pack Energy.

[specific embodiment]

To facilitate a better understanding of the present invention, it is illustrated by the following examples, these examples belong to protection of the invention Range, but do not limit the scope of the invention.

In embodiment, the lithium ion battery packet of internal encapsulating, the battery including connecting formation in series and parallel by battery cell Group unit, battery management system, harness, connection terminal, heat absorption conductive casting glue and shell, the battery assembly module setting is outside Encapsulating cavity is formed between the shell and battery assembly module at the lower part inside shell and positioned at the lithium ion battery packet, described Shell is equipped with battery input interface and battery output interface, and the positive and negative termination electrode of the battery assembly module is inputted with battery respectively Interface is connected with battery output interface, and the upper shell is provided with encapsulating mouth, and the encapsulating mouth is connected to battery assembly module, institute It states filled with heat absorption conductive casting glue in encapsulation cavity body, the heat absorption conductive casting glue forms package status to battery assembly module, The battery management system, battery input interface and battery output interface are both placed in the top at casting glue package interface.

Wherein, the thermal coefficient after heat absorption conductive encapsulating adhesive curing is 0.6~1.0W/ (mK).

Wherein, the fire-protection rating after heat absorption conductive encapsulating adhesive curing is UL-V0 grades.

Wherein, the raw material of heat absorption conductive casting glue includes: compound aluminium hydroxide 40-50 parts, phase-change material by weight 13-20 parts of PCM-1,5-15 parts of graphene, 10-20 parts of dimethicone and 5-20 parts of other additives.

Wherein, other described additives include auxiliary agent, catalyst, Methyl Hydrogen Polysiloxane Fluid and fire retardant, and wherein auxiliary agent is γ- Aminopropyl triethoxysilane, vinyl three ('beta '-methoxy ethyoxyl) silane, γ-methacryloxy aminopropyl trimethoxy One or more of base silane, vinyltrimethoxysilane composition.

Wherein, the fire retardant be aluminium hydroxide, magnesium hydroxide, triphenylphoshonate, hexaphenoxycyclotriphosphazene one Kind or two or more compositions.

Wherein, the catalyst is one or more of platinum-alkenyl complex compound, platinum-carbonyl complex composition.

Below by more specifically examples illustrate the present invention.