Integrated battery box and box thereof
阅读说明：本技术 集成式电池箱及其箱体 (Integrated battery box and box thereof ) 是由 李师 赵慧敏 陈育伟 于 2018-06-27 设计创作，主要内容包括：本发明提供了一种集成式电池箱及其箱体,能够解决现有技术中电池箱的能量密度低的问题。本发明中的集成式电池箱包括箱体和设置在箱体内的电池模组,所述箱体包括设置在箱体内的隔热层和冷板,所述隔热层和冷板依次设置在箱体的底壁上,所述箱体和冷板均与所述隔热层粘接,或是冷板及隔热层通过紧固件固定在箱体的底壁上。通过这两种装配方式,能够减少在电池箱内零部件的使用,从而减少了电池箱的重量和体积,提高了电池箱的能量密度。(The invention provides an integrated battery box and a box body thereof, which can solve the problem of low energy density of the battery box in the prior art. The integrated battery box comprises a box body and a battery module arranged in the box body, wherein the box body comprises a heat insulation layer and a cold plate which are arranged in the box body, the heat insulation layer and the cold plate are sequentially arranged on the bottom wall of the box body, the box body and the cold plate are both bonded with the heat insulation layer, or the cold plate and the heat insulation layer are fixed on the bottom wall of the box body through fasteners. Through the two assembling modes, the use of parts in the battery box can be reduced, so that the weight and the volume of the battery box are reduced, and the energy density of the battery box is improved.)
1. Box of integrated form battery box, including setting up insulating layer and the cold drawing in the box, insulating layer and cold drawing set gradually on the diapire of box, its characterized in that: the box body and the cold plate are both bonded with the heat insulation layer, or the cold plate and the heat insulation layer are fixed on the bottom wall of the box body through fasteners.
2. The integrated battery box body as claimed in claim 1, wherein: the insulating layer is formed by the heat insulating pad of viscose that is equipped with on two sides, the heat insulating pad passes through the viscose and bonds fixedly with the diapire and the cold plate of box respectively.
3. The case of the integrated battery case according to claim 1 or 2, wherein: and a space is arranged between the plate body of the cold plate and the side wall of the box body.
4. The case of the integrated battery case according to claim 1 or 2, wherein: the cold plate is internally provided with a channel for heat-conducting medium to flow, the channel is provided with an inlet and an outlet, and the outlet and the inlet are arranged on the same side of the cold plate.
5. The case of the integrated battery case according to claim 1 or 2, wherein: the cold plate is provided with a heat conduction layer which is used for being matched with the battery module to improve the heat transfer efficiency.
6. The integrated battery box body as claimed in claim 5, wherein: the heat-conducting layer comprises a heat-conducting pad, and the heat-conducting pad is provided with viscose glue which is respectively used for being bonded with the cold plate and the battery module.
7. The integrated battery box body as claimed in claim 5, wherein: the heat-conducting layer is formed by the heat-conducting colloid that sets up on the cold drawing, the heat-conducting colloid is used for bonding the battery module on the cold drawing.
8. An integrated battery box, comprising a box body and a battery module arranged in the box body, wherein the box body is the box body of the integrated battery box of any one of the claims 1-7.
9. The integrated battery box of claim 8, wherein: the cold drawing in the box is equipped with and is used for cooperating with the battery module in order to improve and the heat-conducting layer of heat transfer efficiency, battery monomer in the battery module supports and places on the heat-conducting layer.
Technical Field
The invention relates to the technical field of power batteries, in particular to an integrated battery box and a box body thereof.
Background
With the continuous progress of the power battery technology, the application of the power battery system in the automobile field is more and more extensive. With the development of the technology, the performance requirements of the electric automobile on the power battery system are higher and higher. During the high-rate charging and running use of the electric automobile, the temperature of the battery and the battery box is continuously increased due to the heating of the battery, so that the charging alarm/current limiting of a power system is caused, the charging time is prolonged, the output power is reduced, the temperature of the battery and the battery box is overhigh due to the heating of the battery, and the service life of the power system is shortened. The problem of temperature rise of the battery box becomes an important factor for restricting the performance and the service life of the power system, the problem of overhigh temperature of the battery in the battery box and the battery box is solved, and the charge and discharge performance of the power system and the service life of the power system can be effectively improved.
In the prior art, the battery box is cooled by natural cooling or air cooling, the cooling effect is poor, and the temperature in the battery box is greatly influenced by the outside. In order to solve the problem of poor cooling effect, the patent document with the publication number of CN206976443U and publication date of 2018.02.06 discloses a battery box structure, which comprises a box body, a battery module arranged in the box body and a box cover matched with the box body, wherein the box body comprises a shell, a heat insulating layer, a liquid cooling plate and a box body framework, the shell is provided with an inner cavity for the above components, the heat insulating layer is embedded into the inner cavity, the heat insulating layer also has a structure with the same shape as the shell, the liquid cooling plate is embedded into the inner cavity of the heat insulating layer, the box body framework matched with the shell is attached above the liquid cooling plate, the battery module is placed in the box body framework, and the liquid cooling plate below the box body framework is used as one of the cold plates and can dissipate heat of the battery module.
The box framework in the battery box is provided with the clamping hook, the shell is provided with the support corresponding to the clamping hook, the clamping hook is matched with the support to fix the box framework in the box, when the box framework is fixed in the box, the box framework presses the heat insulation layer and the liquid cooling plate to the bottom surface of the box, so that the heat insulation layer and the liquid cooling plate are clamped between the box framework and the bottom surface of the box, and the heat insulation layer and the liquid cooling plate are fixed. However, the case body frame is introduced for fixing the heat insulation layer and the liquid cooling plate, so that the number of parts in the battery case is increased, the overall weight of the battery case integrally provided with the liquid cooling plate is increased, and the energy density of the battery case is reduced.
Disclosure of Invention
The invention aims to provide a box body of an integrated battery box, which can solve the problem of low energy density of the battery box in the prior art; meanwhile, another object of the present invention is to provide an integrated battery box using the box body, so as to solve the problem of low energy density of the battery box in the prior art.
In order to achieve the purpose, the box body of the integrated battery box adopts the following technical scheme:
the box of integrated form battery box, including setting up insulating layer and the cold drawing in the box, insulating layer and cold drawing set gradually on the diapire of box, box and cold drawing all with the insulating layer bonds, or cold drawing and insulating layer pass through the fastener and fix on the diapire of box.
The beneficial effects are that: the heat insulation layer is arranged between the cold plate and the box body, the heat insulation layer can isolate heat transfer between the cold plate and the box body, a heat transfer loop is formed between the battery module and the cold plate, heat exchange with the box body of the battery box is avoided, the cold plate is prevented from directly heating or radiating the box body, heat loss generated by the cold plate during working is reduced, the utilization rate of the cold plate in the battery box is improved, the heat insulation layer can also play a role in bonding, the cold plate and the box body are fixed through the heat insulation layer, the occupied space of the heat insulation layer is small, the overall weight of the battery box is reduced, other fasteners are not needed to be used for assembly, the overall size of the battery box is reduced, and therefore the energy density of the battery box is improved; when the cold plate and the heat insulation layer are fixedly connected by directly using the fastener, the introduction of other structures is reduced, and the whole weight of the battery box is lightened, so that the energy density of the battery box is improved.
Furthermore, the insulating layer is formed by the heat insulating pad of viscose that is equipped with on both sides, the heat insulating pad passes through the viscose and bonds fixedly with the diapire and the cold plate of box respectively.
The beneficial effects are that: set up the insulating layer into the heat insulating mattress, the area of contact of heat insulating mattress and cold drawing and box bottom surface is abundant, can guarantee good thermal-insulated effect to be provided with the viscose on the heat insulating mattress, bond heat insulating mattress and box and cold drawing through the viscose, simple structure, and use the viscose to bond and reduced fixed knot's use, reduced the whole weight of battery box.
Furthermore, a space is arranged between the plate body of the cold plate and the side wall of the box body.
The beneficial effects are that: the interval is arranged between the plate body of the cold plate and the side wall of the box body, so that the side face of the liquid cooling plate and the box body can not directly generate heat transfer, the heat loss of the cold plate is reduced, the utilization rate of the cold plate is improved, the temperature regulation work can be completed without the cold plate with too large size, the overall size of the battery box is ensured, and the energy density of the battery box is improved.
Furthermore, a channel for heat-conducting medium to flow is arranged in the cold plate, the channel is provided with an inlet and an outlet, and the outlet and the inlet are arranged on the same side of the cold plate.
The beneficial effects are that: the inlet and the outlet of the heat-conducting medium channel in the cold plate are arranged on the same side, so that the space occupied by a connecting pipeline for connecting the inlet and the outlet of the cold plate is reduced, the overall size of the battery box is ensured, and the energy density of the battery box is improved.
Furthermore, a heat conduction layer used for being matched with the battery module to improve the heat transfer efficiency is arranged on the cold plate.
The beneficial effects are that: be provided with the heat-conducting layer between cold drawing and battery module, the heat-conducting layer can be with the heat uniform transfer of battery module for the cold drawing, or with the temperature uniform transfer of cold drawing for battery module, makes the free temperature rise of each battery or temperature drop the same in the battery module, has guaranteed that battery module can the steady operation at the homogeneity of during operation temperature, messenger battery module.
Further, the heat-conducting layer includes the heat conduction pad, be equipped with the viscose that is used for respectively bonding with cold drawing and battery module on the heat conduction pad.
The beneficial effects are that: set up the main part of heat-conducting layer into the heat conduction pad, the area of contact with cold drawing and battery module can be guaranteed to the heat conduction pad to use heat conduction pad simple structure, the technique is mature, fixes cold drawing and battery module through the form that bonds, can reduce the overall dimension of battery box, guarantees its energy density.
Further, the heat-conducting layer is formed by the heat-conducting colloid that sets up on the cold drawing, the heat-conducting colloid is used for bonding the battery module on the cold drawing.
The beneficial effects are that: the battery module passes through the heat conduction colloid and bonds on the cold drawing, and the heat conduction colloid is small to reduced fixed knot and constructed's setting, reduced the use of spare part, made the battery module keep in certain size with the longitudinal dimension of cold drawing, thereby avoided the radial dimension overlength of battery box, guaranteed the energy density of battery box.
In order to achieve the purpose, the integrated battery box adopts the following technical scheme:
integrated form battery box, including box and the battery module of setting in the box, the box is including setting up insulating layer and the cold drawing in the box, insulating layer and cold drawing set gradually on the diapire of box, box and cold drawing all with the insulating layer bonds, or cold drawing and insulating layer pass through the fastener and fix on the diapire of box.
The beneficial effects are that: the heat insulation layer is arranged between the cold plate and the box body, the heat insulation layer can isolate heat transfer between the cold plate and the box body, a heat transfer loop is formed between the battery module and the cold plate, heat exchange with the box body of the battery box is avoided, the cold plate is prevented from directly heating or radiating the box body, heat loss generated by the cold plate during working is reduced, the utilization rate of the cold plate in the battery box is improved, the heat insulation layer can also play a role in bonding, the cold plate and the box body are fixed through the heat insulation layer, the occupied space of the heat insulation layer is small, the overall weight of the battery box is reduced, other fasteners are not needed to be used for assembly, the overall size of the battery box is reduced, and therefore the energy density of the battery box is improved; when the cold plate and the heat insulation layer are fixedly connected by directly using the fastener, the introduction of other structures is reduced, and the whole weight of the battery box is lightened, so that the energy density of the battery box is improved.
Furthermore, the insulating layer is formed by the heat insulating pad of viscose that is equipped with on both sides, the heat insulating pad passes through the viscose and bonds fixedly with the diapire and the cold plate of box respectively.
The beneficial effects are that: set up the insulating layer into the heat insulating mattress, the area of contact of heat insulating mattress and cold drawing and box bottom surface is abundant, can guarantee good thermal-insulated effect to be provided with the viscose on the heat insulating mattress, bond heat insulating mattress and box and cold drawing through the viscose, simple structure, and use the viscose to bond and reduced fixed knot's use, reduced the whole weight of battery box.
Furthermore, a space is arranged between the plate body of the cold plate and the side wall of the box body.
The beneficial effects are that: the interval is arranged between the plate body of the cold plate and the side wall of the box body, so that the side face of the liquid cooling plate and the box body can not directly generate heat transfer, the heat loss of the cold plate is reduced, the utilization rate of the cold plate is improved, the temperature regulation work can be completed without the cold plate with too large size, the overall size of the battery box is ensured, and the energy density of the battery box is improved.
Furthermore, a channel for heat-conducting medium to flow is arranged in the cold plate, the channel is provided with an inlet and an outlet, and the outlet and the inlet are arranged on the same side of the cold plate.
The beneficial effects are that: the inlet and the outlet of the heat-conducting medium channel in the cold plate are arranged on the same side, so that the space occupied by a connecting pipeline for connecting the inlet and the outlet of the cold plate is reduced, the overall size of the battery box is ensured, and the energy density of the battery box is improved.
Furthermore, a heat conduction layer used for being matched with the battery module to improve the heat transfer efficiency is arranged on the cold plate.
The beneficial effects are that: be provided with the heat-conducting layer between cold drawing and battery module, the heat-conducting layer can be with the heat uniform transfer of battery module for the cold drawing, or with the temperature uniform transfer of cold drawing for battery module, makes the free temperature rise of each battery or temperature drop the same in the battery module, has guaranteed that battery module can the steady operation at the homogeneity of during operation temperature, messenger battery module.
Further, the heat-conducting layer includes the heat conduction pad, be equipped with the viscose that is used for respectively bonding with cold drawing and battery module on the heat conduction pad.
The beneficial effects are that: set up the main part of heat-conducting layer into the heat conduction pad, the area of contact with cold drawing and battery module can be guaranteed to the heat conduction pad to use heat conduction pad simple structure, the technique is mature, fixes cold drawing and battery module through the form that bonds, can reduce the overall dimension of battery box, guarantees its energy density.
Further, the heat-conducting layer is formed by the heat-conducting colloid that sets up on the cold drawing, the heat-conducting colloid is used for bonding the battery module on the cold drawing.
The beneficial effects are that: the battery module passes through the heat conduction colloid and bonds on the cold drawing, and the heat conduction colloid is small to reduced fixed knot and constructed's setting, reduced the use of spare part, made the battery module keep in certain size with the longitudinal dimension of cold drawing, thereby avoided the radial dimension overlength of battery box, guaranteed the energy density of battery box.
Furthermore, a heat conduction layer used for being matched with the battery module to improve the heat transfer efficiency is arranged on the cold plate in the box body, and a battery monomer in the battery module is supported and placed on the heat conduction layer.
The beneficial effects are that: the battery monomer that directly in with the battery module supports fixes on the heat-conducting layer, relies on the heat-conducting layer to carry out fixed connection with the battery module, has reduced fixed knot and has constructed the use, has guaranteed the efficiency of heat transfer, has reduced the weight of battery box, has improved the energy density of battery box.
Drawings
Fig. 1 is a schematic structural view of an integrated battery case of
fig. 2 is a plan view of an integrated
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of FIG. 3 at B;
fig. 5 is a schematic structural view of a case in
fig. 6 is a plan view of a case in
FIG. 7 is a cross-sectional view taken along line E-E of FIG. 6;
FIG. 8 is an enlarged view of FIG. 7 at D;
fig. 9 is a schematic structural view of a case in
fig. 10 is a plan view of a case in
FIG. 11 is a cross-sectional view taken along line C-C of FIG. 10;
fig. 12 is an enlarged view at F in fig. 11.
In the figure: 1. a box body; 2. a box cover; 3. a battery module; 4. a thermally conductive gel; 5. a liquid-cooled plate; 6. a heat insulating pad; 7. a fastener.
Detailed Description
Embodiments of an integrated battery case and a case thereof according to the present invention will now be described with reference to the accompanying drawings.
Integrated form battery box includes the box, be provided with the battery module that can carry out charge-discharge in the box, the battery module is arranged by a plurality of battery monomers and is formed, it is provided with the cold drawing that heaies up or cool down the battery module still to integrate in the box of battery box, the cold drawing includes the plate body of a and battery box bottom surface adaptation, be provided with the component that can carry out temperature adjustment in the plate body, for example, cold pipe, heat pipe or heating plate etc., through the box with cold drawing integration setting at the battery box, thereby directly improved monoblock battery system's integrated level, be provided with the insulating layer between cold drawing and box, the heat transfer between cold drawing and the box can be kept apart to the insulating layer, in vertical direction, the cold drawing has been formed, the form of insulating layer. When fixed insulating layer and cold plate, can make the insulating layer bond with the bottom surface and the cold drawing of box respectively through setting up the face of bonding in the insulating layer both sides to fix cold drawing, insulating layer and box, or fix cold drawing and insulating layer in the box through the form that the fastener is connected. Through the two assembling modes, the use of parts in the battery box can be reduced, so that the weight and the volume of the battery box are reduced, and the energy density of the battery box is improved.
As shown in fig. 1 to 8,
In the box body 1, the cold plate is attached to the bottom surface of the battery module 3, a heat insulation layer capable of isolating heat transfer between the cold plate and the box body 1 is further arranged between the cold plate and the bottom surface of the box body 1, the heat insulation layer is formed by a heat insulation pad 6 arranged between the bottom surface of the box body 1 and the cold plate, the heat insulation pad 6 can isolate heat transfer between the cold plate and the box body 1, a heat transfer loop is formed between the battery module 3 and the cold plate, heat exchange is not directly carried out with the box body 1 of the battery box, the cold plate is prevented from directly heating or radiating the box body 1, heat loss generated when the cold plate works is reduced, the heat insulation pad 6 can also play a role in bonding, the upper surface and the lower surface of the heat insulation pad 6, namely, contact surfaces of the heat insulation pad 6 respectively contacted with the box body and the cold plate are respectively provided with adhesive, the heat insulation pad is respectively bonded with the, realized heat insulating mattress 6 simultaneously with cold drawing and box 1's fixed connection to 6 occupation space of heat insulating mattress is little, has alleviateed the whole weight of battery box, need not reuse other fasteners to assemble, has reduced the overall dimension of battery box, thereby has improved the holistic energy density of battery box.
The cold plate in the above embodiment is preferably a
Through introducing heat-conducting layer and insulating layer, the battery box has formed the fixed structure of connecting gradually by
When a technician uses the integrated battery box, the
As shown in fig. 9 to 12,
In other embodiments, the heat insulation layer may be replaced by other forms, such as directly using heat insulation glue with an adhesive function to fix the cold plate and the box body of the battery box.
In other embodiments, the heat-conducting medium in the liquid cooling board as the cold plate can also be replaced by a heating medium, and the temperature of the heating medium is higher than that of the battery module, so that the battery module can be heated, and the cold plate is suitable for the working condition that the battery module needs to discharge in cold weather.
In other embodiments, the cold plate may be replaced with other configurations, such as a cold plate having a heating coil, a heating resistor, or other configuration different from a liquid cold plate, without providing channels in the plate for the flow of the heat transfer medium.
In other embodiments, the liquid cooling plate can also completely cover the bottom surface of the box body, so that the area of the liquid cooling plate is the same as that of the bottom plate of the box body, and a heat insulation pad is still arranged between the bottom surface of the liquid cooling plate and the bottom surface of the box body, so that the heat insulation pad can isolate the heat transfer between the bottom surface of the liquid cooling plate and the bottom surface of the box body, and the heat loss of the liquid cooling plate during working is reduced.
In other embodiments, a thermal pad may be used between the battery module and the cold plate, instead of being bonded by a thermal conductive adhesive. When the battery module is fixed, the battery module can be fixed on the cold plate through the fastener, so that the heat conducting pad is clamped between the battery module and the cold plate.
The structure of the case of the integrated battery case of the present invention is the same as that of the case of the above-described embodiment of the integrated battery case, as shown in fig. 5 to 12, except that the integrated battery case is formed of the case and the battery modules, and thus, the description thereof will not be repeated.
The above-mentioned embodiments, the objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
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