CN204760455U - Battery box body structure with spring damping and liquid heat dissipation function - Google Patents

Abstract

The utility model relates to a battery box body structure with spring damping and liquid heat dissipation function, this structure includes: interior box and outer box. In the box, arrange a square aluminum pipe of S type thin wall between the battery module including the battery module installation, the coolant liquid is in the flow of aluminum pipe mesocycle in order to cool off overheated power battery, between interior box and the outer box bottom with arranged a plurality of damping spring shock absorbers all around, make the battery box physical stamina realize keeping away shaking according to the vibration situation. The utility model discloses can guarantee not only that the electric motor car is unlikely to too high in operation in -process power battery temperature, improves battery temperature uniformity, guarantees battery life, can avoid simultaneously battery box vibration and the adverse effect of striking to the battery performance when vehicle vibration, turn.

Description

A battery box structure with spring damping and liquid cooling functions

technical field

The utility model relates to the field of electric vehicle battery boxes, in particular to a battery box structure with the functions of spring damping and liquid heat dissipation.

Background technique

The development of new energy technology has led to the rise of the electric vehicle industry. As the core component of electric vehicles, power batteries have very important comprehensive performance. Since a single power battery is not enough to provide sufficient power for electric vehicles, the existing energy storage devices for electric vehicles are mainly battery packs, which are composed of dozens or even hundreds of power battery cells connected in series or in parallel. The battery pack is usually placed in a battery box with protective functions. Due to the unavoidable vibration and collision caused by the operation of the electric vehicle, some performance parameters of the battery cell may change suddenly when it is impacted, thereby affecting The overall performance of the battery pack can even lead to safety accidents in severe cases, so the vibration reduction function of the battery box as the battery pack carrier is essential. At the same time, the temperature of the battery cell will continue to rise during the operation of the electric vehicle, and the power battery is sensitive to temperature. If the heat in the battery box during the operation of the electric vehicle is not managed and controlled, it will lead to excessive local temperature rise in the battery box. High temperature will lead to overheating of the power battery. Excessive temperature and uneven heat distribution will directly affect the performance and service life of the battery. More seriously, it will lead to thermal runaway of the battery and cause the electric vehicle to explode.

At present, many battery box design patents are mainly aimed at appearance design, and the impact of vibration and high temperature on power batteries is not very comprehensively considered. Some battery box design patents provide a variety of heat dissipation structures for battery boxes, but they are limited to air-cooled structures. The air-cooled structure is mainly aimed at the better heat dissipation performance of the upper surface of the battery, but the heat dissipation between the single-row batteries is insufficient; some structures consider the heat dissipation between the single-row batteries, but this requires more gaps in the design. Due to the limited space in electric vehicles, a large gap between single-row batteries will not only increase the structure of the box, but is also not conducive to the fixing of power batteries. The patent with the publication number of 103500805A provides a battery case design with a vibration damping function, but its mechanical structure related to the vibration damping function is complicated, and the processing and installation are relatively cumbersome.

Utility model content

The purpose of this utility model is to provide a battery box structure design with damping spring vibration reduction and liquid heat dissipation functions, which can not only reduce the box vibration and impact on the battery caused by road undulations, turning, sudden braking, etc. The performance is not adversely affected, and the unique liquid cooling structure is used to evenly and efficiently dissipate heat from the battery, the structure is simple, and the installation is convenient.

The purpose of this utility model is achieved by the following technical solutions:

A battery box structure with spring vibration damping and liquid heat dissipation functions, the structure includes: battery outer box, battery inner box, S-shaped heat dissipation aluminum tube, damping spring shock absorber, aluminum tube connecting pipe and prevention box The upper rubber pad and the lower rubber pad with sideways sliding; there is a vibration-damping structure between the outer battery box and the inner box, and an S-shaped heat-dissipating aluminum tube is installed inside the battery inner box to form the battery box heat dissipation structure;

The damping structure includes ten damping spring shock absorbers between the battery outer box and the battery inner box, upper rubber pads and lower rubber pads installed on the top and bottom of the spring dampers to prevent the box from sliding sideways, and Several upper mounting screws, first lower mounting screws and second lower mounting screws;

The heat dissipation structure includes S-shaped heat dissipation aluminum tubes and aluminum tube connecting pipes used to connect with other boxes, and the S-shaped heat dissipation aluminum tubes are fixed on the battery inner box through grooves.

Further, the damping spring shock absorber is evenly distributed between the battery outer box and the inner box, four are distributed on the bottom, two are distributed on the front and rear sides, and one is distributed on the left and right sides; The threaded counterbore on the box is connected to the rubber pad and the top of the spring damper in turn, and there are threaded holes on the top of the spring damper; the first lower mounting screw and the second lower mounting screw pass through the two holes at the bottom of the spring damper in turn Connect the lower rubber pad to the battery outer box, and there are threaded holes on the battery outer box.

Further, the S-shaped heat dissipation aluminum tube is fixed in the battery inner box through the groove on the aluminum tube head and the convex groove on the side wall of the battery inner box, and the battery pack is fixed at the interval between the S-shaped heat dissipation aluminum tubes. In the inner box space, the S-shaped heat dissipation aluminum tube starts from the nozzle and the upper and lower flow tubes are spaced apart, and the ends are connected. The inlet and outlet nozzles are connected to the two aluminum tubes through threaded connections. To expand multi-cabinets.

Compared with the existing design, the utility model has the following advantages:

By adopting the inner and outer box-type compact battery box structure, the inner and outer boxes are connected by a mature damping spring shock absorber on the market that can be selected according to the load capacity. The shock absorber has a small size, low price, mature product, and is safe and reliable. , long working life, no need for complex processing of the box structure, easy to install and replace, and has a good isolation effect on the vibration and shock during the operation of the vehicle. S-shaped heat-conducting thin aluminum tubes are used for spacing between single-row batteries. During the flow of coolant in the S-shaped heat-conducting thin aluminum tubes, it can not only dissipate heat from the batteries, but also have a certain positioning effect on the battery strings. In order to prevent the temperature from gradually rising during the flow of the coolant, resulting in poor heat dissipation at the end, the nozzle adopts a two-way flow field design. The port of the cooling pipe is both the liquid inlet and the liquid outlet. The contact between the battery and the heat dissipation pipe The form is surface contact, and the surface contact liquid cooling structure can efficiently balance the temperature between cells, reduce the overall temperature of the battery pack during the flow of coolant, and quickly improve the temperature consistency between batteries.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

Fig. 1 is a general schematic diagram of the structure of the battery box described in the present invention.

Fig. 2 is a schematic diagram of installation of the battery vibration reduction and heat dissipation structure described in the present invention.

Fig. 3 is a schematic diagram of the structure of the inner and outer boxes of the battery described in the present invention.

Fig. 4 is a schematic diagram of the damping structure described in the present invention.

Fig. 5 is a schematic diagram of the liquid cooling heat dissipation structure described in the present invention.

Fig. 6 is a schematic diagram of a longitudinal section of the liquid cooling heat dissipation structure of the present invention.

Explanation of the symbols in the figure: 1. Battery outer box; 2. Battery inner box; 3. S-type heat dissipation aluminum tube; 4. Damping spring shock absorber; 5. Aluminum tube connecting pipe; 6. Rubber pad on the shock absorber ;7. The lower rubber pad of the shock absorber; 8. The upper mounting screw; 9a. The first lower mounting screw; 9b. The second lower mounting screw; 10a. The upper mounting hole of the first shock absorber; 10b. The second shock absorber Upper mounting hole; 11a. Lower mounting hole of the first shock absorber; 11b. Lower mounting hole of the second shock absorber; 11c. Lower mounting hole of the third shock absorber; 11d. Lower mounting hole of the fourth shock absorber; 12. S-shaped aluminum tube head concave card slot; 13. Battery inner box convex card slot; 14. Aluminum tube connection tube hole; 15. Battery pack.

Detailed ways

In order to make the technical means, purpose and effect achieved by the utility model easy to understand, the utility model is clearly and completely described below in conjunction with the accompanying drawings of the utility model.

Referring to Fig. 1 to Fig. 5, a battery case structure with spring damping and liquid heat dissipation functions described in the utility model includes a battery outer case 1, a battery inner case 2, an S-shaped heat dissipation aluminum tube 3, Damping spring shock absorber 4, aluminum pipe connecting pipe 5, etc., the damping spring shock absorber is distributed between the inner and outer boxes of the battery for vibration reduction, and S-shaped heat dissipation aluminum tubes are distributed in the inner box to cool the battery.

The damping structure includes ten damping spring shock absorbers 4 and matching upper and lower rubber pads 6, 7 of the shock absorbers, a number of mounting threaded holes distributed on the battery boxes 1, 2, and the inner box body The threaded hole on the upper body is a through counterbore, and the threaded hole on the outer box is a non-through general threaded hole.

Four shock absorbers 4 are installed at the bottom four corners of the battery outer box 1 and the inner box 2 . Four threaded counterbores are distributed at the corresponding positions on the bottom of the battery inner box 2, that is, the mounting hole 10a on the first shock absorber, the threaded hole on the top of the shock absorber 4, that is, the mounting hole 10b on the second shock absorber, and the mounting hole 10b on the shock absorber 4. There is a rubber pad 6 on the shock absorber between the top and the bottom of the battery inner box 2, and the upper mounting screw 8 is used to connect the bottom of the battery inner box 2, the rubber pad 6 on the shock absorber, and the top of the shock absorber 4; the shock absorber 4 The lower part is distributed with two screw mounting holes, that is, the first shock absorber lower mounting hole 11a, the second shock absorber lower mounting hole 11b; The lower installation hole 11c of the shock absorber and the fourth lower installation hole 11d of the shock absorber; there is a rubber pad 7 under the shock absorber between the battery outer box 1 and the shock absorber 4, and the first lower installation is performed by using two lower installation screws. The screw 9 a and the second lower mounting screw 9 b connect the bottom of the shock absorber 4 , the rubber pad 7 under the shock absorber and the bottom of the battery outer box 1 .

Two shock absorbers 4 are respectively installed on the front and back sides of the battery outer box 1 and the inner box 2, and the installation and fastening principle and steps are the same as those at the bottom of the box.

A shock absorber 4 is installed on the left and right sides of the battery outer box 1 and the inner box 2 respectively, and the installation and fastening principle and steps are the same as those at the bottom of the box.

The heat dissipation structure is an S-shaped heat dissipation aluminum tube 3, the S-type heat dissipation aluminum tube 3 is a movable structure, the S-shaped heat dissipation aluminum tube head groove 12 is inserted longitudinally into the convex groove 13 on the side wall of the inner box, That is, the aluminum tube can be fixed; the battery pack is arranged in the space separated by the S-shaped heat-dissipating aluminum tube 3 . The longitudinal section of the S-shaped heat-dissipating aluminum tube 3 is a narrow rectangle, which is divided into two upper and lower square pipes. There are two longitudinally arranged threaded hole heads at the bottom, which are threadedly connected with two aluminum pipe connecting pipes 5 respectively, and the outer surfaces of the two ends of the aluminum pipe connecting pipe 5 are respectively engraved with threads, so as to expand the heat dissipation structure of multiple battery boxes, and the cooling liquid Flow can be achieved by a pump.

The utility model installation process is as follows:

First put the battery outer box 1 upright, align the mounting holes on the lower part of one of the damping spring shock absorbers 4 and the lower rubber pad 7 with the corresponding threaded holes of the outer box 1, and use the first and second lower mounting screws 9a , 9b are respectively connected and fastened to the lower part of the shock absorber 4, and the other nine are installed and fixed in turn; align the center holes of the ten upper rubber pads 6 with the threaded holes on the shock absorber 4, and then place the battery inner box 2, and place the inner The box is placed on the shock absorber 4, and ten upper mounting screws 8 are respectively installed from the inner side of the battery inner box 2, and the upper part of the shock absorber 4, the upper rubber pad 6, and the battery inner box 2 are connected and fastened. The shock absorber is easy to install and replace, and has a good isolation effect on the vibration and shock during the operation of the vehicle. Anti-slip and wear-resistant rubber pads are used on the top and bottom of the shock absorber to prevent the side slip of the box and improve the safety of the battery box during the operation of the electric vehicle. The upper and lower screw connections are convenient for installation, disassembly and replacement, and the installation height can be adjusted flexibly.

Then vertically align the concave groove 12 on the head of the S-shaped heat-dissipating aluminum tube 3 with the convex groove 13 on the battery inner box 2, and insert the S-shaped heat-dissipating aluminum tube 3 straight into the battery inner box from top to bottom to fix it; Finally, pass the two aluminum tube connecting tubes 5 through the two aluminum tube connecting tube holes 14 on the side wall of the battery outer box 1, and connect the heat dissipation aluminum tube heads in a threaded connection. The aluminum tube connecting tubes 5 are used to expand multiple boxes Body heat dissipation structure; after installation, put the battery pack 15 into the space separated by the S-shaped heat dissipation aluminum tubes. The S-shaped heat-conducting thin aluminum tubes 3 are used to separate the single-row batteries. The S-shaped heat-conducting thin aluminum tubes 3 can not only dissipate the heat of the batteries, keep the temperature consistency of the batteries in the box, but also have a certain positioning effect on the battery strings. In order to prevent the temperature from gradually rising during the flow of the coolant, resulting in poor heat dissipation at the end, the nozzle adopts a two-way flow field design. The port of the cooling pipe is both the liquid inlet and the liquid outlet. The contact between the battery and the heat dissipation pipe The form is surface contact, and the surface contact liquid cooling structure can efficiently balance the temperature between cells, reduce the overall temperature of the battery pack during the flow of coolant, and quickly improve the temperature consistency between batteries.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (3)

1. with a Battery case structure for spring damping and liquid radiating function, this structure comprises: battery outer box body (1), battery internal box (2), S type heat radiation aluminum pipe (3), damping spring shock absorber (4), aluminum pipe tube connector (5) and the upper rubber blanket (6) preventing casing from breakking away and lower rubber blanket (7); It is characterized in that: have vibration-proof structure between described battery outer box body (1) and internal box (2), described battery internal box (2) inside is provided with S type heat radiation aluminum pipe, forms the radiator structure of Battery case;

Described vibration-proof structure comprises ten damping spring shock absorbers (4) between battery outer box body (1) and battery internal box (2), be arranged on upper rubber blanket (6), lower rubber blanket (7) and the some upper mounting screws (8) that spring cushion (4) top and bottom prevent casing from breakking away, first time mounting screw (9a) and second time mounting screw (9b);

Described radiator structure comprises S type heat radiation aluminum pipe (3) and the aluminum pipe tube connector (5) being used for being connected with all the other casings, and S type heat radiation aluminum pipe (3) is fixed on battery internal box (2) by groove.

2. the Battery case structure with spring damping and liquid radiating function according to claim 1, it is characterized in that: described damping spring shock absorber (4) is evenly distributed between battery outer box body (1) and internal box (2), bottom distribution four, front and back sides respectively distributes two, and left and right side respectively distributes one; Upper mounting screw (8) is through the screw-threaded counterbore on battery internal box (2), and connect upper rubber blanket (6) and spring cushion (4) top successively, screwed hole is arranged at spring cushion (4) top; First time mounting screw (9a) is connected lower rubber blanket (7) and battery outer box body (1) with second time mounting screw (9b) successively by two holes, spring cushion (4) bottom, and battery outer box body has screwed hole.

3. the Battery case structure with spring damping and liquid radiating function according to claim 1, it is characterized in that: described S type heat radiation aluminum pipe (3) is fixed in battery internal box (1) by the groove (12) on aluminum pipe head and the cooperation of the tongue (13) on battery internal box (2) sidewall, battery pack is fixed on by the internal box space be separated out between S type heat radiation aluminum pipe (3), S type heat radiation aluminum pipe (3) upper and lower two flow duct from the mouth of pipe are spaced apart, end is connected, enter, the fluid mouth of pipe is threaded connection and is connected with two aluminum pipe tube connectors (5), aluminum pipe tube connector (5) can be used for expanding many casings.