Battery pack fixing frame device for new energy bus

Abstract

The utility model discloses a battery pack fixing frame device for a new energy bus, relates to the technical field of new energy buses, and aims to solve the problems that bolts for fixing a battery pack are easy to loosen after the new energy bus in the prior art is used for a long time, so that the battery pack is easy to loosen in a battery pack fixing frame and further falls off. Rectangular limiting seats are fixedly connected to the middles of the two sides of the battery pack fixing frame correspondingly, guiding pieces are fixedly connected to the middles of the rear ends of the two rectangular limiting seats correspondingly, circular through holes are formed in the middles of the guiding pieces and the middles of the rectangular limiting seats jointly, and pin rods are arranged in the circular through holes of the guiding pieces. A battery pack is arranged in the battery pack fixing frame, rectangular limiting blocks are fixedly connected to the middles of the two sides of the battery pack, locking insertion holes are formed in the middles of the two rectangular limiting blocks, and a mechanical interlocking structure is additionally arranged on the basis of traditional bolt fixing; and the risk that the battery pack falls off due to bolt looseness caused by long-term vibration of the passenger car is effectively prevented.

Description

A battery pack mounting frame device for new energy buses Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to a battery pack fixing frame device for new energy buses. Background Technology

[0002] The battery pack in a new energy vehicle is the core energy storage device that powers the electric vehicle. It is typically composed of multiple lithium-ion battery cells connected in series or parallel and encapsulated in a metal or composite material casing. The mainstream battery types include lithium iron phosphate (LFP) and ternary lithium (NCA / NCM). The former has low cost and long lifespan, while the latter has high energy density.

[0003] For example, CN218257713U discloses a shock absorption and damage prevention device for a new energy bus battery pack, comprising: a bracket assembly and a damage prevention assembly; wherein, the bracket assembly includes upper and lower brackets fixed to the carrier, side rails installed on both sides of the lower bracket, a rail plate fixed to the inner side of the side rails and located on the side of the lower bracket, and a rail seat movably mounted in the rail plate. This utility model, through the damage prevention assembly, uses springs, rubber, and airbags to reduce shock and damage to the battery pack. During normal driving, the springs and rubber sleeves provide constant shock absorption, while some hydraulic oil is stored in the airbag for auxiliary shock absorption, resulting in good shock absorption performance that meets the needs of most scenarios. When road conditions are bumpy and exceed the preset value of the vibration sensor, the hydraulic pump injects hydraulic oil into the airbag through a connecting pipe, causing the airbag to expand appropriately, thereby raising the bearing appropriately and further improving the shock absorption effect.

[0004] The existing battery packs for new energy vehicles and the battery pack mounting frames for buses are only fixed together by bolts. However, after long-term use, the bolts are prone to loosening, which can cause the battery pack to loosen inside the mounting frame and eventually fall off. Therefore, there is an urgent need in the market to develop a battery pack mounting frame device for new energy buses to help solve the existing problems. Summary of the Invention

[0005] The purpose of this utility model is to provide a battery pack fixing frame device for new energy buses, so as to solve the problem mentioned in the background art that the battery pack of new energy vehicles and the battery pack fixing frame of buses are only fixedly connected by bolts. However, after long-term use of buses, the bolts are easy to loosen, which makes the battery pack easy to loosen inside the battery pack fixing frame and thus fall off.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a battery pack fixing frame device for a new energy bus, comprising a bus floor plate, a rectangular opening in the middle of the bus floor plate, a battery pack fixing frame at the upper end of the rectangular opening, rectangular limiting seats fixedly connected to the middle of both sides of the battery pack fixing frame, guide members fixedly connected to the middle of the rear ends of the two rectangular limiting seats, a circular through hole in the middle of the guide members and the rectangular limiting seats, a pin rod inside the circular through hole of the guide members, an electrically controlled telescopic rod at the rear ends of the two guide members, a battery pack inside the battery pack fixing frame, rectangular limiting blocks fixedly connected to the middle of both sides of the battery pack, and locking holes in the middle of the two rectangular limiting blocks.

[0007] Preferably, a connecting plate is fixedly connected to the lower end of the battery pack fixing frame, and the connecting plate is fixedly connected to the upper surface of the bus floor and the bus chassis.

[0008] Preferably, the battery pack fixing frame has multiple second heat dissipation openings arranged in an array on both sides and the front and rear ends, and the battery pack fixing frame has multiple first heat dissipation openings arranged in an array on the upper end.

[0009] Preferably, a honeycomb aluminum protective base plate is fixedly connected to the lower end of the battery pack. The honeycomb aluminum protective base plate is inserted into the rectangular opening and fixedly connected to the connecting plate by multiple bolts. A sealing ring is provided at the edge between the upper surface of the honeycomb aluminum protective base plate and the lower surface of the connecting plate.

[0010] Preferably, both rectangular limiting seats are provided with rectangular limiting grooves inside. The rectangular limiting blocks on both sides of the battery pack slide into the rectangular limiting grooves of the two rectangular limiting seats respectively. The locking holes on the rectangular limiting blocks are connected to the guide and the circular through hole in the middle of the rectangular limiting seat.

[0011] Preferably, the rear end of the pin extends out to the rear end of the guide member and is fixedly connected to the front end of the telescopic end of the electronically controlled telescopic rod, and the electronically controlled telescopic rod is fixedly connected to the side end face of the battery pack fixing frame.

[0012] Preferably, the front end of the pin extends into the rectangular limiting seat along the circular through hole and passes through the locking hole on the rectangular limiting block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, by setting a rectangular limit seat, a rectangular limit block and a pin locking mechanism, a mechanical interlocking structure is added on the basis of traditional bolt fixing, which effectively prevents the risk of battery pack falling off due to long-term vibration of the bus causing the bolts to loosen. This improves the reliability of battery pack fixing.

[0015] (2) In this utility model, the battery pack fixing frame adopts a multi-faceted heat dissipation opening design, combined with the lightweight and high thermal conductivity characteristics of the honeycomb aluminum protective base plate, which optimizes the heat dissipation performance of the battery pack while ensuring structural strength and extending the service life of the battery pack.

[0016] (3) In this utility model, a sealing ring is set between the honeycomb aluminum protective base plate and the connecting plate, which can prevent external moisture and dust from entering the battery pack fixing frame and provide a buffer and shock absorption effect when the bolts are fixed, thereby improving the protective performance and shock resistance of the battery pack. Attached Figure Description

[0017] Figure 1 is a front view of a battery pack fixing frame device for a new energy bus according to the present invention;

[0018] Figure 2 is a main sectional view of the rectangular limiting seat of this utility model;

[0019] Figure 3 is a side sectional view of the battery pack of this utility model;

[0020] Figure 4 is a top sectional view of the pin of this utility model.

[0021] In the diagram: 1. Bus floor; 101. Rectangular opening; 2. Battery pack fixing frame; 201. Connecting plate; 202. First heat dissipation opening; 203. Second heat dissipation opening; 204. Rectangular limiting seat; 205. Rectangular limiting groove; 3. Battery pack; 301. Honeycomb aluminum protective base plate; 302. Sealing ring; 303. Bolt; 304. Rectangular limiting block; 305. Locking hole; 4. Guide component; 401. Circular through hole; 402. Pin; 5. Electrically controlled telescopic rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please refer to Figures 1-4. One embodiment of this utility model provides a battery pack fixing frame device for a new energy bus, including a bus floor plate 1. A rectangular opening 101 is provided in the middle of the bus floor plate 1. A battery pack fixing frame 2 is provided at the upper end of the rectangular opening 101. A connecting plate 201 is fixedly connected to the lower end of the battery pack fixing frame 2. The connecting plate 201 is fixedly connected to the upper surface of the bus floor plate 1 and the bus chassis. A battery pack 3 is provided inside the battery pack fixing frame 2. A honeycomb aluminum protective base plate 301 is fixedly connected to the lower end of the battery pack 3. The honeycomb aluminum protective base plate 301 is inserted into the rectangular opening 101 and connected to the connecting plate 201 by multiple screws. The battery pack 3 is fixedly connected by bolts 303. A sealing ring 302 is provided at the edge between the upper end face of the honeycomb aluminum protective base plate 301 and the lower end face of the connecting plate 201. During installation, the battery pack 3 is inserted into the battery pack fixing frame 2 through the rectangular opening 101. After the honeycomb aluminum protective base plate 301 is inserted into the rectangular opening 101, it is fixedly connected to the connecting plate 201 by multiple bolts 303, thereby achieving a fixed connection between the battery pack 3 and the battery pack fixing frame 2. At the same time, the sealing ring 302 seals the upper end face of the honeycomb aluminum protective base plate 301 and the lower end face of the connecting plate 201 to prevent moisture from entering the battery pack fixing frame 2 through the rectangular opening 101.

[0024] Please refer to Figures 2 and 4. Rectangular limiting seats 204 are fixedly connected to the center of both sides of the battery pack fixing frame 2. Guide members 4 are fixedly connected to the center of the rear ends of both rectangular limiting seats 204. A circular through hole 401 is provided in the center of both guide members 4 and the rectangular limiting seats 204. A pin 402 is provided inside the circular through hole 401 of the guide member 4. An electronically controlled telescopic rod 5 is provided at the rear ends of both guide members 4. Rectangular limiting blocks 304 are fixedly connected to the center of both sides of the battery pack 3. Locking holes 305 are provided in the center of both rectangular limiting blocks 304. Both rectangular limiting seats 204 have rectangular limiting grooves 205 inside. The rectangular limiting blocks 304 on both sides of the battery pack 3 slide into the rectangular limiting grooves 205 of the two rectangular limiting seats 204 respectively. The locking holes 305 on the rectangular limiting blocks 304 are connected to the guide 4 and the circular through hole 401 in the middle of the rectangular limiting seat 204. The rear end of the pin 402 extends out of the rear end of the guide 4 and is fixedly connected to the front end of the telescopic end of the electric telescopic rod 5. The electric telescopic rod 5 is fixedly connected to the side end face of the battery pack fixing frame 2. The front end of the pin 402 is along the circular... The through hole 401 extends into the rectangular limiting seat 204 and passes through the locking hole 305 on the rectangular limiting block 304. When the battery pack 3 is inserted upward into the battery pack fixing frame 2 along the rectangular opening 101, it simultaneously drives the two rectangular limiting blocks 304 to slide into the rectangular limiting grooves 205 of the two rectangular limiting seats 204 respectively. When the battery pack 3 is fully installed, the locking hole 305 on the rectangular limiting block 304 will align with the guide 4 and the circular through hole 401 in the middle of the rectangular limiting seat 204. At this time, the electric telescopic rod 5 is controlled. The action pushes the pin 402 forward along the circular through hole 401, so that the front end of the pin 402 passes through the guide 4 and the rectangular limit seat 204 in sequence and finally inserts into the locking hole 305 of the rectangular limit block 304, thereby realizing the mechanical locking of the battery pack 3. Through the limiting structure of the pin 402 and the locking hole 305, the battery pack 3 and the battery pack fixing frame 2 are locked. Even if the bolts 303 used to fix the honeycomb aluminum protective base plate 301 and the connecting plate 201 are loose, the battery pack 3 will not come out of the battery pack fixing frame 2.

[0025] Please refer to Figure 1. Multiple second heat dissipation openings 203 are arrayed on both sides and the front and rear ends of the battery pack fixing frame 2. Multiple first heat dissipation openings 202 are arrayed on the upper end of the battery pack fixing frame 2. The first heat dissipation openings 202 on the upper end of the battery pack fixing frame 2 and the second heat dissipation openings 203 around the perimeter, together with the honeycomb aluminum protective base plate 301, can both ensure the heat dissipation requirements of the battery pack and provide good protective performance.

[0026] Working principle: During use, the battery pack 3 is pushed upwards into the battery pack fixing frame 2 along the rectangular opening 101 of the bus floor 1, so that the rectangular limiting blocks 304 on both sides of the battery pack 3 slide into the rectangular limiting grooves 205 of the rectangular limiting seat 204 simultaneously, and the honeycomb aluminum protective base plate 301 is inserted into the rectangular opening 101. After the battery pack 3 is fully in place, the honeycomb aluminum protective base plate 301 is fixed to the connecting plate 201 by bolts 303, at which time the sealing ring 302 achieves sealing and waterproofing. When installed in place, the locking hole 305 of the rectangular limiting block 304 will automatically align with the guide 4 and the circular through hole 401 of the rectangular limiting seat 204. At this time, the electric telescopic rod 5 pushes the pin 402 forward, so that the pin 402 passes through the guide 4 and the rectangular limiting seat 204 in sequence and inserts into the locking hole 305 of the rectangular limiting block 304, forming a mechanical interlock. This dual-fixation structure achieves primary fixation via bolts 303, while mechanical locking via pins 402 prevents the risk of loosening and detachment. The heat generated during battery pack operation is efficiently dissipated through the first heat dissipation opening 202, the second heat dissipation opening 203, and the porous structure of the honeycomb aluminum protective base plate 301, while maintaining protective performance.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A battery pack fixing frame device for new energy buses, comprising a bus floor plate (1), characterized in that: A rectangular opening (101) is provided in the middle of the bus floor (1). A battery pack fixing frame (2) is provided at the upper end of the rectangular opening (101). A rectangular limiting seat (204) is fixedly connected to the middle of both sides of the battery pack fixing frame (2). A guide (4) is fixedly connected to the middle of the rear end of both rectangular limiting seats (204). A circular through hole (401) is provided in the middle of the guide (4) and the rectangular limiting seat (204). A pin (402) is provided inside the circular through hole (401) of the guide (4). An electric telescopic rod (5) is provided at the rear end of both guides (4). A battery pack (3) is provided inside the battery pack fixing frame (2). A rectangular limiting block (304) is fixedly connected to the middle of both sides of the battery pack (3). A locking hole (305) is provided in the middle of both rectangular limiting blocks (304).

2. The battery pack fixing frame device for new energy buses according to claim 1, characterized in that: A connecting plate (201) is fixedly connected to the lower end of the battery pack fixing frame (2), and the connecting plate (201) is fixedly connected to the upper surface of the bus floor plate (1) and the bus chassis.

3. The battery pack fixing frame device for new energy buses according to claim 1, characterized in that: The battery pack fixing frame (2) has multiple second heat dissipation openings (203) arranged in an array on both sides and the front and rear ends, and the battery pack fixing frame (2) has multiple first heat dissipation openings (202) arranged in an array on the upper end.

4. The battery pack fixing frame device for new energy buses according to claim 1, characterized in that: The lower end of the battery pack (3) is fixedly connected to a honeycomb aluminum protective base plate (301). The honeycomb aluminum protective base plate (301) is inserted into the rectangular opening (101) and fixedly connected to the connecting plate (201) by multiple bolts (303). A sealing ring (302) is provided at the edge between the upper end surface of the honeycomb aluminum protective base plate (301) and the lower end surface of the connecting plate (201).

5. The battery pack fixation frame device for new energy buses according to claim 1, characterized in that: Both rectangular limiting seats (204) are provided with rectangular limiting grooves (205). The rectangular limiting blocks (304) on both sides of the battery pack (3) slide into the rectangular limiting grooves (205) of the two rectangular limiting seats (204). The locking holes (305) on the rectangular limiting blocks (304) are connected to the guide (4) and the circular through hole (401) in the middle of the rectangular limiting seat (204).

6. The battery pack fixation frame device for new energy buses according to claim 1, characterized in that: The rear end of the pin (402) extends out to the rear end of the guide (4) and is fixedly connected to the front end of the telescopic end of the electric telescopic rod (5). The electric telescopic rod (5) is fixedly connected to the side end face of the battery pack fixing frame (2).

7. The battery pack fixation frame device for new energy buses according to claim 1, characterized in that: The front end of the pin (402) extends into the rectangular limiting seat (204) along the circular through hole (401) and passes through the locking hole (305) on the rectangular limiting block (304).

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