Vehicle with back battery

Abstract

The utility model belongs to the field of vehicles powered by power batteries, and particularly relates to a vehicle with a back battery. In order to improve the supporting effect of the back battery, the utility model provides a vehicle with the back battery, and the vehicle is provided with an inclined strut with a better structure. The vehicle with the back battery comprises a main frame, a cab, the back battery located behind the cab and an auxiliary frame used for installing a carriage, the auxiliary frame is installed above the main frame, the back battery comprises a battery frame and an inclined strut used for supporting the battery frame, one end of the inclined strut is fixedly connected with the battery frame, and the other end of the inclined strut is fixedly connected with the cab. And the other end of the inclined strut is fixedly connected with the auxiliary frame. Compared with the prior art, one end of the inclined strut is fixed to the auxiliary frame, the inclined angle of the inclined strut is reduced, the ratio of the size of the inclined strut in the front-back direction to the height of the inclined strut is increased, and therefore the supporting effect of the inclined strut is improved, and the structure of the vehicle is more compact.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the vehicle field that uses the power battery power supply, especially a kind of vehicle with back battery. BACKGROUND

[0002] In new energy vehicle, back battery refers to the battery arranged behind cab.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN221476708U and the authorization announcement date August 6, 2024 discloses a kind of electric vehicle chassis and pure electric sanitation vehicle, in the car, cab is located in the front of frame, car box is located in the rear of frame, back battery pack is installed between cab and car box. Among them, back battery pack includes battery frame, support seat and battery pack installed on battery frame.

[0004] When the height of back battery is higher, the gravity center of battery frame and battery pack is higher, and the weight of battery frame and battery pack is as high as several tons, in order to better support battery frame, back battery also includes inclined strut for supporting battery frame.

[0005] For example, the Chinese utility model patent with the authorization announcement number CN219635141U and the authorization announcement date September 5, 2023 discloses a kind of truck back battery frame system, the back battery frame system includes upper frame assembly (equivalent to battery frame), lower bracket assembly (equivalent to support seat) and inclined strut, both ends of inclined strut are fixed on upper frame assembly and lower bracket assembly.

[0006] For example, the Chinese utility model patent with the authorization announcement number CN220963592U and the authorization announcement date May 14, 2024 discloses a kind of truck back battery box and new energy truck, in the truck, both ends of inclined strut are fixed on battery frame and frame (equivalent to main frame).

[0007] In the above two utility model patents, one end of inclined strut is fixed with support seat or main frame, and the other end is fixed with battery frame, that is, inclined strut is always located between battery frame and auxiliary frame for supporting car box, or, inclined strut is always located between battery frame and cab, in order to avoid that vehicle is too long, the inclination angle of inclined strut is larger, that is, the size of inclined strut in front-back direction is smaller, the ratio of size of inclined strut in front-back direction to height of inclined strut is smaller, so that the horizontal component of force on inclined strut is smaller, resulting in poor supporting effect. UTILITY MODEL CONTENTS

[0008] The utility model aims at providing a kind of vehicle with back battery, to solve the technical problem that the supporting effect of existing inclined strut is poor.

[0009] To achieve the above object, the utility model provides a vehicle with rear battery technical scheme is:

[0010] A vehicle with rear battery, including main frame, cab, rear battery located in the rear of cab and for installing the auxiliary frame of car body, auxiliary frame is installed above main frame, rear battery includes battery frame and is used for supporting the diagonal brace of battery frame, one end of diagonal brace is fixedly connected with battery frame, the other end of diagonal brace is fixedly connected with auxiliary frame, to reduce the inclination angle of diagonal brace.

[0011] Further, the diagonal brace includes diagonal beam and reinforcing beam, reinforcing beam is arranged between battery frame and diagonal beam, one end of reinforcing beam is fixedly connected with battery frame, the other end is fixedly connected with diagonal beam, and reinforcing beam, diagonal beam and battery frame jointly enclose a triangle.

[0012] Further, the reinforcing beam extends along the front and rear direction, and the reinforcing beam is perpendicular to the battery frame, and the triangle is a right triangle.

[0013] Further, the diagonal brace is arranged at least two in the left and right direction.

[0014] Further, the diagonal brace includes diagonal beam and base for fixedly connected with auxiliary frame, and the reinforcing piece is arranged between diagonal beam and base, and both ends of reinforcing piece are fixedly connected with diagonal beam and base respectively.

[0015] Further, both ends of reinforcing piece are fixedly connected with diagonal beam and base by welding.

[0016] Further, one of battery frame and diagonal brace is provided with protruding part, and the other is provided with connecting part, the connecting part is provided with accommodating groove for accommodating protruding part, and the protruding part is fixedly connected with connecting part.

[0017] Further, the protruding part and the connecting part are fixedly connected by bolt, and the axis of bolt extends along the left and right direction.

[0018] Further, the diagonal brace further includes reinforcing beam, reinforcing beam is arranged between connecting part and diagonal beam, one end of reinforcing beam is fixedly connected with connecting part, the other end is fixedly connected with diagonal beam, and reinforcing beam, diagonal beam and connecting part jointly enclose a triangle.

[0019] Further, the diagonal brace and auxiliary frame are fixedly connected by bolt.

[0020] The vehicle with a rear battery has the beneficial effects that: the utility model is an improved invention. Compared with the prior art, the utility model has the following key points: one end of the diagonal brace is fixed on the auxiliary frame, the inclination angle of the diagonal brace is reduced, the ratio of the size of the diagonal brace in the front-rear direction to the height of the diagonal brace is increased, thereby the horizontal component of the force on the diagonal brace is increased (that is, when the force of the diagonal brace supporting the battery frame is constant, the force on the diagonal brace is smaller; or, when the force on the diagonal brace reaches the limit, the maximum supporting force of the diagonal brace on the battery frame is larger), the diagonal brace can better support the battery frame, and the structure of the vehicle is more compact. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Fig. 1 is a structure schematic view of the vehicle with a rear battery in the utility model;

[0022] Figure 2 Fig. 2 is a structure schematic view of the diagonal brace in the utility model; Figure 1 Fig. 3 is an enlarged view of structure A in Fig. 1;

[0023] Figure 3 Fig. 4 is a top view schematic view of the vehicle with a rear battery in the utility model;

[0024] Figure 4 Fig. 5 is a structure schematic view of the diagonal brace in the utility model;

[0025] Figure 5 Fig. 6 is a structure schematic view of the first step of the vehicle with a rear battery in the utility model during assembly;

[0026] Figure 6 Fig. 7 is a structure schematic view of the second step of the vehicle with a rear battery in the utility model during assembly;

[0027] Figure 7 Fig. 8 is a structure schematic view of the third step of the vehicle with a rear battery in the utility model during assembly.

[0028] Explanation of reference signs:

[0029] 1, cab; 2, power battery; 3, battery frame; 4, bottom support; 5, main frame; 6, auxiliary frame; 7, diagonal beam; 8, vehicle compartment; 9, reinforcing beam; 10, channel steel; 11, reinforcing member; 12, base. DETAILED DESCRIPTION

[0030] To solve the problems in the background art, the core inventive concept of the utility model is that one end of the diagonal brace is fixed on the auxiliary frame, thereby the inclination angle of the diagonal brace is reduced, and the ratio of the size of the diagonal brace in the front-rear direction to the height of the diagonal brace is increased.

[0031] The utility model will be further described in detail in combination with the embodiments.

[0032] The utility model provides a specific embodiment of vehicle with back battery:

[0033] As Figures 1-7 The specific embodiment of vehicle with back battery includes main frame 5, cab 1, back battery behind cab 1 and vice frame 6 for installing truck box 8, vice frame 6 is installed above main frame 5, back battery includes battery frame 3 and diagonal brace for supporting battery frame 3, one end of diagonal brace is fixedly connected with battery frame 3, the other end of diagonal brace is fixedly connected with vice frame 6 to reduce the inclination angle of diagonal brace.

[0034] Wherein, truck box 8 can be a structure such as a cargo box or a garbage can, and the vehicle with back battery can be a concrete mixing transport vehicle, a dump truck or the like. The back battery includes a battery frame 3, a bottom support 4, and a power battery 2 mounted on the battery frame 3.

[0035] In the first-1 specific embodiment, as Figure 1 The diagonal brace is fixedly connected with the battery frame 3 by bolts, and the diagonal brace is fixedly connected with the vice frame 6 by bolts, which is simple in structure and easy to assemble.

[0036] Meanwhile, the diagonal brace is arranged at least two in the left-right direction, and Figures 1-3 specifically two, of course, it can be three, four or more. When the number of diagonal braces is more, the battery frame 3 is better supported, but the structure is more complex.

[0037] In the first-2 specific embodiment, the diagonal brace is fixedly connected with the battery frame 3 by welding, and the diagonal brace is fixedly connected with the vice frame 6 by welding.

[0038] In the first-3 specific embodiment, the diagonal brace has only one, at this time, one end of the diagonal brace is fixed in the middle of the battery frame 3. At this time, the total mass of the back battery is smaller, and the support of the diagonal brace to the battery frame 3 meets the use requirement.

[0039] Compared with the prior art, the utility model has the following key points: one end of the diagonal brace is fixed on the vice frame 6, the inclination angle of the diagonal brace is reduced, the ratio of the size of the diagonal brace in the front-rear direction to the height of the diagonal brace is increased, thereby the horizontal component of the force on the diagonal brace is increased (i.e., when the force of the diagonal brace supporting the battery frame 3 is constant, the force on the diagonal brace is smaller; or when the force on the diagonal brace reaches the limit, the maximum support force of the diagonal brace to the battery frame 3 is larger), so that the diagonal brace can better support the battery frame 3.

[0040] At the same time, compared with the existing technology with a base 4, the diagonal brace in the utility model is not fixed on the base 4, so there is no need to reserve space on the base 4 for fixed connection with the diagonal brace, which can reduce the size of the base 4 and make the vehicle structure more compact.

[0041] In the first embodiment, only the diagonal brace supports the battery frame 3. In order to better support the battery frame 3, the present invention makes the following improvements based on the first embodiment:

[0042] like Figures 1-4 As shown, in the second type of specific implementation, the diagonal brace includes a diagonal beam 7 and a reinforcing beam 9. The reinforcing beam 9 is arranged between the battery frame 3 and the diagonal beam 7. One end of the reinforcing beam 9 is fixedly connected to the battery frame 3, and the other end is fixedly connected to the diagonal beam 7. The reinforcing beam 9, the diagonal beam 7 and the battery frame 3 together form a triangle, so that the battery frame 3 is better supported.

[0043] In the 2-1 embodiment, the reinforcement beam 9 extends in the front-to-back direction and is perpendicular to the battery frame 3. The triangle is a right triangle. In this case, the force exerted by the reinforcement beam 9 on the battery frame 3 is horizontal. When the battery frame 3 rocks back and forth, the force exerted on the reinforcement beam 9 is minimized, and the force transferred from the reinforcement beam 9 to the diagonal beam 7 is minimized, thereby minimizing the force exerted on the diagonal beam 7.

[0044] In a specific embodiment of type 2-2, the triangle is an acute triangle.

[0045] In the second and third types of specific implementations, the reinforcing beam 9 is perpendicular to the oblique beam 7 . In this case, the triangle is a right triangle.

[0046] In the second embodiment, the diagonal brace includes a diagonal beam 7 and a base 12 for being fixedly connected to the subframe 6. The diagonal beam 7 and the base 12 are integrally formed or fixedly connected by welding or the like. In order to increase the maximum supporting force of the diagonal brace on the battery frame 3, in the third embodiment, as shown in FIG. Figure 4 As shown, on the basis of the second type of specific implementation method, a reinforcement member 11 is provided between the inclined beam 7 and the base 12, and the two ends of the reinforcement member 11 are fixedly connected to the inclined beam 7 and the base 12 respectively, thereby increasing the maximum force that the inclined beam 7 can withstand, increasing the maximum supporting force of the inclined beam 7 (i.e., the diagonal support) on the battery frame 3, and improving the supporting effect of the inclined beam 7.

[0047] It should be noted that the reinforcement member 11 can be a reinforcement plate, reinforcement block, or reinforcement rib. The reinforcement member 11 can be fixedly connected to the inclined beam 7 and the base 12 respectively by welding, screwing, or clamping. Preferably, the two ends of the reinforcement member 11 are fixedly connected to the inclined beam 7 and the base 12 respectively, which simplifies the structure.

[0048] In the 3-1 type embodiment, the base 12 is fixedly connected with the subframe 6 by bolts, which is simple in structure and convenient to assemble. However, in other embodiments, the base 12 can also be fixedly connected with the subframe 6 by clamping or welding.

[0049] In the 4 type embodiment, the battery frame 3 and the diagonal brace both have butt flanges, and after the butt flanges of the battery frame 3 and the diagonal brace are butted, the battery frame 3 and the diagonal brace are fixedly connected by bolts. At this time, the bolts extend in the front-rear direction.

[0050] In order to improve the connection strength between the battery frame 3 and the diagonal brace, in the 5 type embodiment, one of the battery frame 3 and the diagonal brace is provided with a protruding part, and the other is provided with a connecting part, the connecting part is provided with a receiving groove for accommodating the protruding part, and the protruding part is fixedly connected with the connecting part. At this time, compared with the technical solution of butt joint of the battery frame 3 and the diagonal brace plane, the contact area of the connecting part and the protruding part is larger, and the connection strength is high.

[0051] In the 5-1 type embodiment, the battery frame 3 is provided with a protruding part, and the diagonal brace is provided with a connecting part, the connecting part is a channel steel 10, and the protruding part and the connecting part are fixedly connected by bolts, and the axis of the bolt extends in the left-right direction, which is convenient for workers to screw the bolts. At this time, the diagonal beam 7 and the channel steel 10 jointly constitute the diagonal brace.

[0052] In the 5-2 type embodiment, the connecting part is a connecting block.

[0053] In the 5-3 type embodiment, different from the 5-1 type and the 5-2 type embodiments, the battery frame 3 is provided with a connecting part, and the diagonal brace is provided with a protruding part.

[0054] In the 5-4 type embodiment, the connecting part and the protruding part are welded together, and compared with the technical solution of butt joint of the battery frame 3 and the diagonal brace plane and then welding together, at this time, the welding area of the connecting part and the protruding part is larger, and the structural strength is high.

[0055] In the 5-5 type embodiment, the diagonal brace further comprises a reinforcing beam 9, the reinforcing beam 9 is arranged between the connecting part and the diagonal beam 7, one end of the reinforcing beam 9 is fixedly connected with the connecting part, and the other end is fixedly connected with the diagonal beam 7, and the reinforcing beam 9, the diagonal beam 7 and the connecting part jointly enclose a triangle, thereby improving the supporting effect of the diagonal brace.

[0056] As shown in Figures 5-7 When assembling a vehicle with a rear battery, the following steps can be installed for assembly:

[0057] Step S1: as shown in Figure 5As shown, first, the battery frame 3 is installed on the main frame 5 through the bottom support 4;

[0058] Step S2: as shown in Figure 6 As shown, then the car body 8 is installed on the sub-frame 6;

[0059] Step S3: as shown in Figure 7 As shown, finally, the diagonal brace is installed on the sub-frame 6 and the battery frame 3.

[0060] It should be noted that the specific embodiments in the present application are only classified according to specific features, and do not mean that the other categories do not contain this specific feature. For example, the structure of the first type of specific embodiment may be the same as that of the third, fourth or fifth type of specific embodiment.

[0061] Finally, it should be noted that the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments without paying creative labor, or to make equivalent replacement for part of the technical features, or to organically combine different types of specific embodiments, so as to combine the attached Figures 1-7 The specific embodiments given in the foregoing description are of course only specific embodiments of the present application, and of course, those skilled in the art can also combine the specific embodiments not given in the foregoing description. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle having a rear battery, comprising a main frame, a cab, a rear battery located behind the cab, and a sub-frame for mounting a truck bed, the sub-frame being mounted above the main frame, the rear battery comprising a battery frame and diagonal braces for supporting the battery frame, one end of the diagonal braces being fixedly connected to the battery frame, characterized in that, The other end of the inclined support is fixedly connected with the auxiliary frame to reduce the inclination angle of the inclined support.

2. The vehicle with a rear battery of claim 1, wherein, The inclined support comprises an inclined beam and a reinforcing beam, the reinforcing beam is arranged between the battery frame and the inclined beam, one end of the reinforcing beam is fixedly connected with the battery frame, and the other end of the reinforcing beam is fixedly connected with the inclined beam, and the reinforcing beam, the inclined beam and the battery frame jointly enclose a triangle.

3. The vehicle with a back battery of claim 2, wherein, The reinforcing beam extends in the front-rear direction, and the reinforcing beam is perpendicular to the battery frame, and the triangle is a right-angled triangle.

4. The vehicle with a back battery of claim 1, wherein, The inclined supports are arranged in the left-right direction at intervals and are at least two.

5. The vehicle with a back battery according to any one of claims 1-4, wherein, The inclined support comprises an inclined beam and a base for fixedly connecting with the auxiliary frame, a reinforcing member is arranged between the inclined beam and the base, and two ends of the reinforcing member are fixedly connected with the inclined beam and the base respectively.

6. The vehicle with a rear battery of claim 5, wherein, The two ends of the reinforcing member are fixedly connected with the inclined beam and the base by welding.

7. The vehicle with a back battery according to claim 1 or 4, characterized in that, One of the battery frame and the inclined support is provided with a protruding part, the other is provided with a connecting part, the connecting part is provided with a receiving groove for receiving the protruding part, and the protruding part is fixedly connected with the connecting part.

8. The vehicle with a rear battery of claim 7, wherein, The protruding part and the connecting part are fixedly connected by bolts, and the axis of the bolts extends in the left-right direction.

9. The vehicle with a back battery of claim 7, wherein, The inclined support further comprises a reinforcing beam, the reinforcing beam is arranged between the connecting part and the inclined beam, one end of the reinforcing beam is fixedly connected with the connecting part, and the other end of the reinforcing beam is fixedly connected with the inclined beam, and the reinforcing beam, the inclined beam and the connecting part jointly enclose a triangle.

10. The vehicle with a back battery according to any one of claims 1-4, wherein, The inclined support is fixedly connected with the auxiliary frame by bolts.

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