Square battery case for new energy battery

Abstract

The utility model discloses a square battery case for a new energy battery, which relates to the technical field of new energy batteries and comprises a battery box shell, an upper cover and fastening bolts, the upper cover is arranged at the top end of the battery box shell, and the fastening bolts are arranged at four corners of the battery box shell and the upper cover. A pressing structure is arranged at the joint of the battery box shell and the upper cover; the telescopic spring is used for pushing the lower pressing plate to enable the lower pressing plate to be always in contact with the battery core in the battery box shell, so that the battery core is prevented from loosening during transportation and use, a circuit at the upper end of the battery core can also be pressed, and the circuit is prevented from loosening; when the upper cover and the battery box shell are closed, the sealing strip is automatically folded so as to be located between the upper cover and the battery box shell, the upper cover and the battery box shell can be sealed, rainwater permeating into the space between the battery box shell and the upper cover is reduced, and the sealing strip can be opened or closed when the upper cover is disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, in particular to a square battery shell for new energy batteries. Background Art

[0002] New energy batteries are batteries that are repeatedly charged over a long period of time. They can be used to repeatedly power new energy electric vehicles or new energy battery vehicles. The battery shell of new energy batteries is a shell that encapsulates the battery core, so that the battery core is located inside the battery box shell;

[0003] In the prior art, when new energy batteries are transported and used, the battery core and the inside of the battery box shell move relative to each other, causing the battery core to become loose or damaged during transportation, and the wires between the battery core electrodes to become loose. The battery shell lacks a structure to compress the battery core and the wires, and the battery box is fixed with bolts at the corners, so that the sealing effect there is better. The pre-tightening force in the middle of the edge of the battery box is relatively small, making it easier for liquid to penetrate or flow out, which is relatively unsafe. Utility Model Content

[0004] The purpose of the utility model is to provide a square battery case for a new energy battery to solve the problems raised in the above background technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A square battery shell for a new energy battery comprises a battery box shell, an upper cover and fastening bolts, wherein the upper cover is arranged at the top of the battery box shell, the fastening bolts are arranged at the four corners of the battery box shell and the upper cover, a downward pressing structure is arranged at the joint of the battery box shell and the upper cover, and the downward pressing structure comprises a downward pressing plate, which is arranged on the lower surface of the upper cover, and connecting holes are arranged at the four corners of the lower pressing plate, and connecting columns are connected inside the connecting holes, and the ends of the connecting columns are fixed to the bottom end of the upper cover, and a telescopic spring is sleeved in the middle of the connecting column and between the upper cover and the lower pressing plate.

[0007] As a preferred technical solution of the utility model, the area of ​​the lower pressing plate is smaller than the cross-sectional size of the battery box shell, and the lower pressing plate is located inside the top end of the battery box shell.

[0008] As a preferred technical solution of the utility model, a receiving cavity for receiving the telescopic spring is provided at a corner of the bottom surface of the upper cover, and the telescopic spring is located inside the receiving cavity.

[0009] As a preferred technical solution of the utility model, a sealing structure for sealing the gap between the battery box shell and the upper cover is arranged between the edge of the upper cover and the edge of the lower pressure plate, and the sealing structure includes four sealing strips, and the sealing strips are arranged at the four edges of the lower pressure plate and the four edges of the upper cover, and the two side edges of the sealing strip and the intersection with the upper cover and the lower pressure plate are respectively connected with a fixed plate one and a fixed plate two, and the surfaces of the fixed plate one and the fixed plate two are screwed with connecting bolts, one edge of the sealing strip is fixed to the fixed plate one and the upper cover by the connecting bolts, and the other edge of the sealing strip is fixed to the fixed plate two and the lower pressure plate by the connecting bolts.

[0010] As a preferred technical solution of the utility model, the sealing strip is V-shaped, the middle of the sealing strip is located at the joint of the upper cover and the lower pressure plate, and a reserved groove is opened at the joint surface of the lower pressure plate and the upper cover, and the spacing of the reserved grooves is adapted to the thickness of the folded sealing strip.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] A pressing structure is provided, and a telescopic spring is used to push the pressing plate so that the pressing plate is always in contact with the battery core inside the battery box shell, so that the battery core inside the battery box shell can be pressed tightly to prevent the battery core from loosening during transportation and use, and the circuit at the upper end of the battery core can also be pressed tightly to prevent the circuit from loosening;

[0013] A sealing structure is provided, and when the upper cover and the battery box shell are closed, the sealing strip is automatically folded and located between the upper cover and the battery box shell, so that the upper cover and the battery box shell can be sealed to reduce the penetration of rainwater between the battery box shell and the upper cover, especially the sealing is better in the middle position of the upper cover and the edge of the battery box shell. When disassembling and assembling the upper cover, the sealing strip can be opened or closed, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0015] Figure 1 This is the main structure diagram of the utility model;

[0016] Figure 2 It is a front view of the utility model;

[0017] Figure 3 It is a schematic diagram of the downward pressing structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the sealing structure of the utility model;

[0019] Figure 5 for Figure 4 Enlarged view of point A.

[0020] In the figure: 1. battery box shell; 2. upper cover; 3. fastening bolts; 4. downward pressure structure; 5. sealing structure; 41. downward pressure plate; 42. connecting column; 43. telescopic spring; 44. connecting hole; 51. sealing strip; 52. fixing plate 1; 53. fixing plate 2; 54. connecting bolts. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] See also Figure 1-Figure 5 As shown, a square battery case for a new energy battery comprises a battery box shell 1, an upper cover 2 and fastening bolts 3, the upper cover 2 is arranged at the top of the battery box shell 1, the fastening bolts 3 are arranged at the four corners of the battery box shell 1 and the upper cover 2, the battery box shell 1 and the upper cover 2 are fixed by the fastening bolts 3, and the battery core inside the battery box shell 1 can be fixed, and a pressing structure 4 is arranged at the joint of the battery box shell 1 and the upper cover 2, and the pressing structure 4 comprises a pressing plate 41, and the pressing plate 41 is arranged on the lower surface of the upper cover 2, and the pressing plate 41 is provided at the lower surface of the upper cover 2. Connecting holes 44 are provided at the four corners, and connecting columns 42 are connected inside the connecting holes 44. The ends of the connecting columns 42 are fixed to the bottom end of the upper cover 2. A telescopic spring 43 is sleeved in the middle of the connecting column 42 and between the upper cover 2 and the lower pressure plate 41. The telescopic spring 43 can be compressed. When the upper cover 2 and the battery box shell 1 are fixed, the lower pressure plate 41 presses down the battery cell under the action of the telescopic spring 43, ensuring that the battery cell will not shake or move significantly during transportation, and the circuit of the battery cell can be compressed.

[0024] In this embodiment, the area of ​​the lower pressure plate 41 is smaller than the cross-sectional size of the battery box shell 1. The lower pressure plate 41 is located inside the top end of the battery box shell 1. When the upper cover 2 is covered on top of the battery box shell 1, the lower pressure plate 41 can be located inside the battery box shell 1 to prevent the lower pressure plate 41 from affecting the normal closure of the upper cover 2.

[0025] In this embodiment, a receiving cavity for accommodating the telescopic spring 43 is opened at the bottom corner of the upper cover 2. The telescopic spring 43 is located inside the receiving cavity. When the upper cover 2 and the battery box shell 1 are closed, it is used to store the telescopic spring 43 to prevent the telescopic spring 43 from being too long when compressed and affecting the closing of the upper cover 2.

[0026] In this embodiment, a sealing structure 5 for sealing the gap between the battery box housing 1 and the upper cover 2 is provided between the edge of the upper cover 2 and the edge of the lower pressing plate 41. The sealing structure 5 includes four sealing strips 51. The sealing strips 51 are provided at the four edges of the lower pressing plate 41 and the four edges of the upper cover 2. The folded sealing strips 51 can contact the joint of the battery box housing 1 and the upper cover 2. The two side edges of the sealing strip 51 and the intersection with the upper cover 2 and the lower pressing plate 41 are respectively connected with a fixing plate 1 52 and a fixing plate 2 53. The surfaces of the fixing plate 1 52 and the fixing plate 2 53 are screwed with connecting bolts 54, and the fixing plate 1 52 and the fixing plate 2 53 can be fixed to the upper cover 2 and the lower pressure plate 41 by the connecting bolts 54. One edge of the sealing strip 51 is fixed to the fixing plate 1 52 and the upper cover 2 by the connecting bolts 54, and the other edge of the sealing strip 51 is fixed to the fixing plate 2 53 and the lower pressure plate 41 by the connecting bolts 54. The edge of the sealing strip 51 is fixed to the lower pressure plate 41 and the upper cover 2 to prevent the sealing strip 51 from falling off.

[0027] In this embodiment, the sealing strip 51 is in a V-shape, and the V-shaped opening of the sealing strip 51 is automatically adjusted according to the gap between the upper cover 2 and the lower pressure plate 41. The middle of the sealing strip 51 is located at the joint between the upper cover 2 and the lower pressure plate 41, and a reserved groove is provided at the joint surface between the lower pressure plate 41 and the upper cover 2, and the spacing of the reserved grooves is adapted to the thickness of the folded sealing strip 51. When the lower pressure plate 41 and the upper cover 2 are in contact, the sealing strip 51 can seal the edges, especially the middle position between the upper cover 2 and the edge of the battery box shell 1.

[0028] When the utility model is in use, the new energy battery is a common battery. The new energy battery is repeatedly charged and discharged so that the electrical equipment can be used repeatedly. When assembling the new energy battery, the battery core is placed inside the battery box shell 1. At this time, the upper cover 2 is closed on the top of the battery box shell 1, and the lower pressing plate 41 is in contact with the battery core. Under the action of the telescopic spring 43, the lower pressing plate 41 is slidably connected with the connecting column 42 until the lower pressing plate 41 is pressed tightly on the battery core. The battery core inside the battery box shell 1 can be pressed tightly to prevent the battery core from loosening during transportation and use. The circuit at the upper end of the battery core can also be pressed tightly to prevent the circuit from loosening. When the lower pressing plate 41 is pressed tightly, the lower pressing plate 41 is located at The opening size of the sealing strip 51 between the upper cover 2 will also change. Specifically, since one edge of the sealing strip 51 is fixed to the fixing plate 1 52 and the upper cover 2 by a connecting bolt 54, and the other edge of the sealing strip 51 is fixed to the fixing plate 2 53 and the lower pressure plate 41 by a connecting bolt 54, the edge of the sealing strip 51 is fixed to the lower pressure plate 41 and the upper cover 2 to prevent the sealing strip 51 from falling off, and the spacing of the reserved grooves is matched with the thickness of the folded sealing strip 51. When the lower pressure plate 41 and the upper cover 2 are in contact with each other, the sealing strip 51 can seal the edges, especially the middle position between the upper cover 2 and the edge of the battery box shell 1, thereby reducing the water seepage in the middle of the edge of the battery box shell 1 and the upper cover 2.

[0029] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A square battery case for a new energy battery, comprising a battery box shell (1), an upper cover (2) and fastening bolts (3), wherein the upper cover (2) is arranged at the top of the battery box shell (1), and the fastening bolts (3) are arranged at four corners of the battery box shell (1) and the upper cover (2); characterized in that: A downward pressing structure (4) is provided at the joint between the battery box shell (1) and the upper cover (2), and the downward pressing structure (4) comprises a downward pressing plate (41), the downward pressing plate (41) is provided on the lower surface of the upper cover (2), and connecting holes (44) are provided at four corners of the downward pressing plate (41), and the interior of the connecting hole (44) is connected to a connecting column (42), and the end of the connecting column (42) is fixed to the bottom end of the upper cover (2), and a telescopic spring (43) is sleeved in the middle of the connecting column (42) and located between the upper cover (2) and the downward pressing plate (41).

2. A square battery shell for new energy batteries according to claim 1, characterized in that: The area of ​​the lower pressing plate (41) is smaller than the cross-sectional size of the battery box housing (1), and the lower pressing plate (41) is located inside the top end of the battery box housing (1).

3. A square battery shell for new energy batteries according to claim 2, characterized in that: A receiving cavity for receiving a telescopic spring (43) is provided at a bottom corner of the upper cover (2), and the telescopic spring (43) is located inside the receiving cavity.

4. A square battery shell for a new energy battery according to claim 3, characterized in that: A sealing structure (5) for sealing the gap between the battery box housing (1) and the upper cover (2) is provided between the edge of the upper cover (2) and the edge of the lower pressing plate (41). The sealing structure (5) includes four sealing strips (51). The sealing strips (51) are provided at the four edges of the lower pressing plate (41) and the four edges of the upper cover (2). The two side edges of the sealing strip (51) and the intersection with the upper cover (2) and the lower pressing plate (41) are respectively connected to a fixing plate 1 (52) and a fixing plate 2 (53). The surfaces of the fixing plate 1 (52) and the fixing plate 2 (53) are both screwed with connecting bolts (54). One edge of the sealing strip (51) is fixed to the fixing plate 1 (52) and the upper cover (2) by the connecting bolts (54), and the other edge of the sealing strip (51) is fixed to the fixing plate 2 (53) and the lower pressing plate (41) by the connecting bolts (54).

5. A square battery case for a new energy battery according to claim 4, characterized in that: The sealing strip (51) is V-shaped, the middle of the sealing strip (51) is located at the joint between the upper cover (2) and the lower pressing plate (41), and a reserved groove is provided at the joint surface between the lower pressing plate (41) and the upper cover (2), and the spacing between the reserved grooves is adapted to the thickness of the folded sealing strip (51).

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