Power battery installation buckle structure

Abstract

The utility model discloses a power battery installation buckle structure which comprises a protective shell with an opening in one side, the protective shell is of a shell structure, battery blocks are installed in the protective shell in an arrayed mode, a plurality of groove beams are installed on the corresponding opening side of the protective shell and used for pressing and fixing the upper sides of the battery blocks, a bayonet is formed in one end of each groove beam, and a bolt hole is formed in the other end of each groove beam. Clamping blocks matched with the bayonets are arranged at the ends, corresponding to the groove beams, of the protective shells, lugs are arranged at the positions, corresponding to the bolt holes, of the protective shells, and the lugs are provided with holes, correspond to the bolt holes of the groove beams and are fixed through bolts. In the installation process, due to the fact that the battery blocks are installed in a tightening mode, the side edges of the protective shell expand to a certain degree under collision and extrusion of the battery blocks, the protective shell can be stretched to a certain degree when the clamping buckle ends corresponding to the groove beams are installed, the problem that bolt holes cannot be aligned due to a traditional positioning hole fixing mode is solved, and installation tightness and accuracy are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy batteries, and in particular relates to a power battery installation buckle structure. Background Art

[0002] New energy batteries are mainly lithium iron phosphate batteries, which are lithium-ion batteries that use lithium iron phosphate (LiFePO4) as the positive electrode material and carbon as the negative electrode material. They are wrapped in an aluminum shell and made into a block structure with a length, width and thickness of about 15*12*3cm. As a power battery component, multiple block batteries are required to work in coordination to meet the power and voltage requirements.

[0003] Two-wheeled riding electric vehicles are usually equipped with fixed rechargeable batteries. When the vehicle needs to be used for a long time, the downtime caused by charging is very inconvenient. For example, the takeaway industry requires uninterrupted use of electric vehicles. In order to avoid waiting for charging time, detachable and rechargeable new energy batteries are very suitable. The battery consists of multiple block batteries arranged and fixed, and the battery pack as a whole is powered together. The battery block corresponding to the battery pack is currently fixed by glue or tape, and then placed in a protective shell. The top of the protective shell is an open side, corresponding to the wiring side of the battery block. In order to prevent the battery block from detaching from the open side of the protective shell on bumpy roads, the protective shell is fixed at the open side by multiple beams. The existing beam fixing method is single, with holes opened and fixed by tightening bolts. This not only makes the installation procedure cumbersome, but also the bolt positioning point is very fixed. When the protective shell is squeezed and deformed by the battery block, it is difficult to align the screw hole position.

[0004] Therefore, the utility model improves the battery block corresponding to the protective shell snap-fit ​​fixing structure, and adopts an adjustable mortise and tenon structure for fixing, thereby improving installation efficiency and improving installation stability. Utility Model Content

[0005] The utility model aims to provide a power battery installation buckle structure, improve the battery block corresponding to the protective shell snap-fit ​​fixing structure, adopt an adjustable mortise and tenon structure for fixing, improve installation efficiency, and improve installation stability.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] A power battery mounting buckle structure comprises a protective shell with a single-side opening, wherein the protective shell is a shell structure, and battery blocks are arranged and mounted inside the shell;

[0008] A plurality of groove beams are installed on the opening side corresponding to the protective shell, which are used to press and fix the upper side of the battery block. The groove beams are strip-shaped structures, and the two ends are fixed to the opposite opening sides of the protective shell;

[0009] One end of the grooved beam is provided with a bayonet, and the other end is provided with a bolt hole. A clamping block matched with the bayonet is arranged at the corresponding end of the protective shell for the grooved beam, and an ear plate is arranged at the position of the protective shell corresponding to the bolt hole. The ear plate is provided with an opening and corresponds to the bolt hole of the grooved beam, and is fixed by a bolt.

[0010] Further, the side projection of the clamping block is a T-shaped structure, which is integrally arranged with the side of the protective shell, and the bayonet is a T-shaped structure, corresponding to the structure of the clamping block.

[0011] Further, the longitudinal section corresponding to the grooved beam is a C-shaped, and arc-shaped notches are provided on the two side walls corresponding to the grooved beam for wire grooves.

[0012] Further, a resin plate is also covered between the grooved beam and the battery block. The resin plate is installed on the opening side of the protective shell, and the resin plate is provided with a perforation for the terminal of the battery block to pass through.

[0013] Explosion-proof holes are provided at the positions corresponding to the battery explosion-proof points on the bottom of the grooved beam and the resin plate.

[0014] An embedded bushing is installed at the position corresponding to the opening of the ear plate for cooperation with the bolt.

[0015] The utility model has the following beneficial effects: During the installation process, due to the tight installation of the battery block, the side of the protective shell has a certain expansion under the collision and extrusion of the battery block. The corresponding buckle end of the grooved beam can stretch the protective shell to a certain extent during installation, avoiding the problem that the bolt holes cannot be aligned caused by the traditional positioning hole fixing method, and improving the installation tightness and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below.

[0017] Figure 1 : Structural schematic diagram of the present utility model.

[0018] Figure 2 : Structural schematic diagram of the overall installation position of the present utility model.

[0019] Figure 3 : Structural schematic diagram of the grooved beam and bolt of the present utility model.

[0020] In the drawings, the list of components represented by each reference numeral is as follows: protective shell 1, grooved beam 2, bayonet 21, bolt hole 22, clamping block 11, ear plate 12, bolt 4, notch 23, resin plate 3, explosion-proof hole 24, bushing 41. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] like Figure 1-2 As shown: A power battery mounting snap-on structure includes a protective shell 1 with a single-side opening. The protective shell 1 is a shell structure with battery blocks arranged inside. The protective shell is a regular structure with a cubic structure as a whole. The corresponding corners are stepped and used for configuring and installing circuit boards, etc. The protective plate is a galvanized steel plate or an aluminum alloy plate, which is spliced ​​together.

[0023] A plurality of groove beams 2 are installed on the corresponding opening side of the protective shell 1. The groove beams are installed in parallel and are used to press and fix the upper side of the battery block. The upper side of the battery block is the wiring side, which has wiring terminals and is connected in series through the connecting plate. The groove beams 2 are strip-shaped structures and are used to press the battery block so that the battery block is not easy to fall off from the opening side of the protective shell. The two ends are fixed to the opposite opening sides of the protective shell 1;

[0024] A bayonet 21 is provided at one end of the slot beam 2, and a bolt hole 22 is opened at the other end. A clamping block 11 cooperating with the bayonet 21 is provided at the end of the protective shell 1 corresponding to the slot beam 2. The clamping block is a raised part on the corresponding side of the protective shell. An ear piece 12 is provided at the position of the protective shell 1 corresponding to the bolt hole. The ear piece 12 has a hole and corresponds to the bolt hole of the slot beam 2, and is fixed by bolts 4.

[0025] During installation, the battery block is positioned by the positioning tool and then installed in the protective shell by hydraulic pushing. The wiring side of the battery block is flush with the opening side of the protective shell. The corresponding bayonet of the slot beam is inserted into the block and fixed in position. Then the slot beam is pressed. The corresponding bolt holes of the slot beam coincide with the corresponding openings of the ear piece and are tightened with bolts.

[0026] During the installation process, the battery block is installed tightly, and the sides of the protective shell expand to a certain extent under the collision and compression of the battery block. The corresponding buckle end of the slot beam can stretch the protective shell to a certain extent during installation, avoiding the problem of bolt hole alignment caused by the traditional positioning hole fixing method, and improving the installation tightness and accuracy.

[0027] like Figure 3 As shown: the corresponding side projection of the block 11 is a T-shaped structure, which is integrally arranged with the side of the protective shell 1, and the bayonet 21 is a T-shaped structure, corresponding to the structure of the block 11. During installation, the block is inserted through the wide side of the bayonet, and after being inserted to the end, it moves toward the narrow side, so that the end corresponding to the block is limitedly engaged with the narrow side of the bayonet, similar to the mortise and tenon structure, and does not require bolts for fixing. When the other end is fixed, the buckle end is not easy to loosen.

[0028] The longitudinal section corresponding to the channel beam 2 is in a C shape. Arc-shaped notches 23 are formed on both side walls corresponding to the channel beam 2 for wire grooves. There are multiple notches, and the notches on both sides are symmetrically arranged for battery block wiring to prevent extrusion of the cables. The bottom corresponding to the channel beam contacts the upper side of the battery block, and the two side walls play a role similar to that of reinforcing ribs to improve the strength.

[0029] A resin plate 3 is also covered between the channel beam 2 and the battery block. The resin plate 3 is installed on the opening side of the protective shell 1, and the resin plate 3 is provided with perforations for the connection terminals of the battery block to pass through. The resin plate improves the insulation property, and at the same time reduces the pressure between the channel beam and the battery block, reduces the local pressure, and prevents damage to the end side of the battery block.

[0030] As Figure 3 shown: Explosion-proof holes 24 are formed at the positions corresponding to the bottom of the channel beam 2 and the resin plate 3 at the battery explosion-proof points. Each battery block is wrapped with a metal shell, and there is an explosion-proof point on the corresponding connection terminal side to prevent the battery from bulging. When expansion occurs, the explosion-proof point bursts, preventing the problem that the battery bulges on the side and causes the battery to be scrapped and difficult to remove. Corresponding to the explosion-proof points, explosion-proof holes are formed on both the resin plate and the channel beam.

[0031] An embedded bushing 41 is installed at the position corresponding to the opening of the lug 12 for cooperation with the bolt 4. The outer side wall of the bushing has teeth for interference fit with the perforation by external force. After the bushing is fixed, it is convenient for the bolt to be positioned.

[0032] These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention.

Claims

1. A battery installation buckle structure, including a protective shell (1) with a single-sided opening. The protective shell (1) is of a shell structure, and battery blocks are arranged and installed inside; characterized in that: A plurality of groove beams (2) are installed on the corresponding opening side of the protective shell (1) for pressing and fixing the upper side of the battery blocks. The groove beams (2) are of a strip structure, and both ends are fixed to the opposite opening sides of the protective shell (1); One end of the groove beam (2) is provided with a bayonet (21), and the other end is provided with a bolt hole (22). The protective shell (1) is provided with a clamping block (11) corresponding to the end of the groove beam (2) and cooperating with the bayonet (21). The protective shell (1) is provided with an earpiece (12) corresponding to the position of the bolt hole. The earpiece (12) is perforated and corresponds to the bolt hole of the groove beam (2), and is fixed by a bolt (4).

2. A power battery mounting buckle structure according to claim 1, characterized in that: The side projection of the clamping block (11) is a T-shaped structure, which is integrally provided with the side of the protective shell (1). The bayonet (21) is a T-shaped structure, corresponding to the structure of the clamping block (11).

3. According to claim 1, a power battery mounting buckle structure is characterized in that: The longitudinal section corresponding to the groove beam (2) is a U-shaped, and arc-shaped notch openings (23) are provided on the two side walls corresponding to the groove beam (2) for wire grooves.

4. A power battery mounting buckle structure according to claim 3, characterized in that: A resin plate (3) is also covered between the groove beam (2) and the battery block. The resin plate (3) is installed on the opening side of the protective shell (1), and the resin plate (3) is provided with a perforation for the battery terminal to pass through.

5. A power battery mounting buckle structure according to claim 4, characterized in that: Explosion-proof holes (24) are provided at the positions corresponding to the bottom of the groove beam (2) and the resin plate (3) and the battery explosion points.

6. The power battery mounting buckle structure according to claim 1, characterized in that: An embedded screw sleeve (41) is installed at the position corresponding to the perforation of the earpiece (12) for cooperating with the bolt (4).

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