CN217641646U - Case lid of commercial car lithium battery system - Google Patents

Abstract

The utility model discloses a commercial car lithium battery system's case lid, including box covering, box skeleton and box inside lining, box covering and box inside lining are integrated into the case lid wholly with the box skeleton cladding through hot membrane moulding technology in the middle of both, box covering side is provided with vacuum suction nozzle. The utility model has scientific and reasonable structural design, and reasonably utilizes three simple and common processes such as plastic suction process, stamping process, hot film plastic package mouth process, vacuumizing process and the like; under the condition that the use function and the mechanical strength requirement are not influenced, the part is light, so that the energy density of the whole commercial vehicle lithium battery system is improved, the attribute and the function of each material are fully exerted, and a reasonable cost advantage is obtained.

Description

Case lid of commercial car lithium battery system

Technical Field

The utility model relates to a lithium cell technical field specifically is a commercial car lithium battery system's case lid.

Background

Commercial car lithium battery system shell mainly comprises box, case lid and electrical components, and wherein box and case lid mainly have following function: 1. providing a connecting function for mounting the whole vehicle; 2. forming a closed space to protect the lithium battery and other electrical elements; with the higher and higher overall power consumption indexes of the new energy automobile, new requirements are provided for the energy density index of the lithium battery system; at present, the box cover of the commercial vehicle lithium battery system mainly adopts the following forms: 1. bending the box cover by using a metal plate; 2. punching and forming a box cover; 3, molding the SMC into a box cover; 4. forming a box cover by plastic suction;

the above-mentioned technical forms have the following corresponding disadvantages:

1. bending the box cover by a metal plate; the scheme adopts a bending process which is not suitable for batch production, and the integral sealing performance of the product is not ensured due to uncontrollable deformation caused by a large amount of welding processes;

2. punching and forming a box cover; the existing battery system shell is continuously pulled up along with the energy density index; meanwhile, the box body is a part for bearing the force of the whole lithium battery system, and is gradually changed into a plate-shaped structure from the previous cavity structure, and the cavity depth of the box cover in the shell of the lithium battery system is deeper and deeper due to the evolution of the box body structure, so that the product yield in the stretching process in the punch forming realization process is continuously reduced, and even the process cannot be realized;

3, molding the SMC into a box cover; SMC box covers have the following problems: 1. the contribution of the thicker thickness to the light weight of a lithium battery system of the commercial vehicle is not obvious 2, the local strength of the product is poor, and local reinforcement treatment is needed when the product is connected with a box body screw; 3, the self raw material of SMC is a thermosetting material, and the waste is difficult to recycle, so that no reasonable solution is available at present;

4. vacuum forming the box cover: the process has the following requirements on plastic raw materials: 1. the material has good fluidity 2, good toughness 3 and good mechanical strength; the plastic raw materials on the market have the three advantages and are high in cost.

In order to meet the requirements, a novel device which is reasonable in cost and can play good structural attributes and protection effects simultaneously is needed to meet the requirements of a corresponding lithium battery system. Therefore, the box cover of the lithium battery system of the commercial vehicle is provided.

Disclosure of Invention

An object of the utility model is to provide a commercial car lithium battery system's case lid to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a case lid of commercial car lithium battery system, includes box covering, box skeleton and box inside lining, box covering and box inside lining are integrated into the case lid wholly with the box skeleton cladding through hot membrane moulding technology in the middle of both, box covering side is provided with vacuum suction nozzle.

Preferably, the box body skin, the box body framework and the bottom of the box body lining are correspondingly provided with a first step part, a second step part and a third step part.

Preferably, the bottom of the first step part and the top of the third step part are both provided with protrusions which can be correspondingly inserted into the grooves on the second step part, and the protrusions are vertical bars.

Preferably, the first step portion, the second step portion and the third step portion have the same thickness.

Preferably, a coating is arranged on the outer portion of the box body skin.

Preferably, the box body skin and the box body lining are of thermoplastic insulation plastic suction molding integrated structures.

Preferably, the box framework is of an integrated structure formed by punching and molding an aluminum wire mesh.

Preferably, the vacuum suction nozzle is provided with a control valve.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the box cover of the commercial vehicle lithium battery system is simple and reasonable in structural design and high in practicability, and reasonably utilizes three simple and common processes such as a plastic suction process, a stamping process, a hot film plastic package opening process and a vacuumizing process;

2. the utility model realizes the light weight of parts without influencing the use function and the mechanical strength requirement, thereby improving the energy density of the whole commercial vehicle lithium battery system;

3. the utility model effectively overcomes the defects of several schemes of the prior commercial vehicle lithium battery system box cover in the industry; the mechanical strength is good, and the manufacturability is strong;

4. the utility model adopts a composite material mode without adopting single material to separate the function of the part into each part, and adopts a function separation mode to realize the function of the whole part (the skin and the lining realize the insulation and IP protection function; the framework satisfies the mechanical strength function), thereby fully playing the property and the function of each material and striving for reasonable cost advantage;

5. the utility model discloses well box inside lining and box covering form a confined vacuum interval after the heat is moulded, have reduced the outside conduction area of heat and air conditioning and have improved the hot conductive condition, are favorable to promoting the heating and the cooling efficiency of lithium battery system's heat management to reduce the energy loss of whole car.

Drawings

Fig. 1 is a schematic view of the structure decomposition and overall state of the present invention.

Fig. 2 is a schematic view of the sectional structure of the present invention.

Fig. 3 is a schematic view of the structure of the step portion connection state of the present invention.

Fig. 4 is the structural schematic diagram of the box skin of the present invention.

In the figure: 001 box body skin, 002 box body framework, 003 box body lining, 004 box cover whole, 005 vacuum suction nozzle, 006 coating, 007 first step part, 008 second step part, 009 third step part, 010 groove and 011 protrusion.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-4, the present invention provides a technical solution: a case cover of a commercial vehicle lithium battery system comprises a case body skin 001, a case body framework 002 and a case body lining 003, wherein the case body skin 001 and the case body lining 003 coat the case body framework 002 in the middle of the case body skin and the case body lining 003 and are integrated into a case cover whole 004 through a hot film plastic process, the case body skin 001 and the case body lining 003 are both formed by thermoplastic insulation plastics through plastic suction, the case body framework 002 is formed by aluminum wire mesh through punching, the side surface of the case body skin 001 is provided with a vacuum suction nozzle 005, the vacuum suction nozzle 005 is provided with a control valve, and the device reasonably utilizes three simple and common processes such as a plastic suction process, a punching process, a hot film plastic package mouth process and a vacuumizing process; the parts are light without influencing the use function and the mechanical strength requirement, so that the energy density of the whole commercial vehicle lithium battery system is improved; the defects of several schemes of the existing commercial vehicle lithium battery system box cover in the industry are effectively overcome; the mechanical strength is good, and the manufacturability is strong; the method does not adopt a single material and adopts a composite material mode. The functions of the components are separated into each part, and the functions of the whole component are realized in a function separation mode (the skin and the lining realize the functions of insulation and IP protection, and the framework meets the function of mechanical strength). The properties and functions of each material are fully exerted, and reasonable cost advantage is obtained.

The box liner 003 and the box skin 001 form a closed vacuum region after being subjected to thermoplastic molding, so that the outward conduction area of heat and cold air is reduced, the heat conduction condition is improved, the heating and cooling efficiency of the heat management of the lithium battery system is favorably improved, and the energy loss of the whole vehicle is reduced.

The outside coating 006 that is provided with of box skin 001, improved the whole protective effect of device under the effect of coating 006, coating 006 can be waterproof or anticorrosive material coating, box skin 001, box skeleton 002 and box inside lining 003 bottom correspond and are provided with first step portion 007, second step portion 008 and third step portion 009, first step portion 007, second step portion 008 and third step portion 009 are insulating plastic, through plastics sucking and stamping process machine-shaping, first step portion 007, second step portion 008 and third step portion 009 respectively rather than top mechanism fixed connection, first step portion 007 bottom and third step portion 009 top all are provided with the protruding step portion 011 that can correspond in inserting second step portion 008 upper groove 010, protruding 011 is vertical strip form, first step portion 007, second step portion 008 and third step portion 009's thickness is the same, during specific assembly, overlaps box inside lining 003 with box skeleton 002 in proper order, establishes box skin 001 on the box skeleton afterwards, and first step portion 002, second step portion 008 and third step portion 009 connect gradually, seal through the hot plastic process.

The box cover of the commercial vehicle lithium battery system comprises the following specific process flows:

the box cover lining 003 and the box cover skin 001 are made of insulating plastics and are realized by a sheet plastic uptake process; the box body framework 002 is realized by punching and forming an aluminum wire mesh; case lid inside lining 003 and case lid covering 001 the cladding of box skeleton 002 is realized through hot film plastic technology in the centre, the whole evacuation of following vacuum nozzle 005 of last part, the arch 011 of first step portion 007 downside and third step portion 009 upside corresponds the card and establishes in recess about second step portion 008, the holistic combination effect of device has further been improved, encapsulate second step portion 008 in the middle of first step portion 007 and third step portion 009 through hot plastic technology, the leakproofness of device has effectively been improved, the structural performance of device has been guaranteed, thereby realize the whole equipment of device.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a case lid of commercial car lithium battery system which characterized in that: including box covering (001), box skeleton (002) and box inside lining (003), box covering (001) and box inside lining (003) are integrated into case lid whole (004) with box skeleton (002) cladding in the middle of both through the hot-film plastic technology, box covering (001) side is provided with vacuum suction nozzle (005).

2. The box cover of the commercial vehicle lithium battery system according to claim 1, wherein: the bottom of the box body skin (001), the bottom of the box body framework (002) and the bottom of the box body lining (003) are correspondingly provided with a first step part (007), a second step part (008) and a third step part (009).

3. The box cover of the commercial vehicle lithium battery system according to claim 2, wherein: the bottom of the first step part (007) and the top of the third step part (009) are provided with protrusions (011) which can be correspondingly inserted into the upper groove (010) of the second step part (008), and the protrusions (011) are in a vertical bar shape.

4. The box cover of the commercial vehicle lithium battery system according to claim 2, wherein: the first step part (007), the second step part (008) and the third step part (009) have the same thickness.

5. The box cover of the commercial vehicle lithium battery system according to claim 1, wherein: the box body skin (001) is externally provided with a coating (006).

6. The box cover of the commercial vehicle lithium battery system according to claim 1, wherein: the box body skin (001) and the box body lining (003) are both of thermoplastic insulating plastic suction molding integrated structure.

7. The box cover of the commercial vehicle lithium battery system according to claim 1, wherein: the box body framework (002) is of an integrated structure formed by aluminum wire mesh through stamping.

8. The box cover of the commercial vehicle lithium battery system according to claim 1, wherein: and a control valve is arranged on the vacuum suction nozzle (005).

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