Insulation structure of power battery module

Abstract

The utility model relates to the technical field of power battery modules, in particular to an insulation structure of a power battery module, which comprises a lower support, side plates are arranged on two sides of the lower support, a plurality of battery cells mounted at the top of the lower support are arranged between the side plates, and insulation frames distributed transversely are arranged at the tops of the battery cells. A plurality of supporting blocks capable of being finely adjusted are arranged on the insulating frame, a plurality of insulating sheets are fixed to the bottoms of the supporting blocks, metal columns are arranged at the two ends of the insulating frame, magnetic sleeves matched with the metal columns in structure are arranged on the outer sides of the top ends of the side plates, and threaded sleeves are arranged on the outer sides of the magnetic sleeves. And a double-screw bolt for limiting the metal column is inserted into the screw sleeve in a penetrating manner. According to the insulation structure of the power battery module, the installation process of the insulation sheet can be simplified, the stability and durability of the insulation sheet are enhanced, the risk of short circuit is greatly reduced, and the safety and reliability of a battery system are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery modules, in particular to an insulation structure of a power battery module. Background Art

[0002] The power battery module is composed of multiple battery cells connected in series and parallel to form a system with a relatively fixed voltage platform and fixed current capacity. Most square battery shells carry positive or weak electric potential. When multiple battery cells are combined together, the battery cells will come into contact with each other, which will cause a short circuit when connected in series, so insulation protection is required between the battery cells.

[0003] At present, the insulation protection of the battery cells of the power battery module is achieved by placing an insulating sheet between two adjacent battery cells. However, the installation process of the insulating sheet in the prior art is complicated, and it is easy to cause physical damage to the insulating sheet during operation, affecting its insulation performance. In addition, the insulation sheet has poor stability after installation and is often gradually offset or fallen off due to factors such as vibration and bumps that are difficult to avoid during vehicle operation, thereby causing contact between the battery cells, causing a short circuit risk, and affecting the safety and reliability of the battery system. Utility Model Content

[0004] The purpose of the utility model is to provide an insulation structure for a power battery module to solve the problem raised in the above background technology that the current power battery module is insulated by placing an insulating sheet between two adjacent battery cells, but the insulating sheet is complex and fragile during installation, has poor stability, and vibration may cause the insulating sheet to shift or even fall off, causing a short circuit in the battery cell, thereby affecting the safety and reliability of the battery.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an insulating structure of a power battery module, comprising a lower bracket, side panels are provided on both sides of the lower bracket, a plurality of battery cells installed on the top of the lower bracket are provided between the side panels, a laterally distributed insulating frame is provided on the top of the battery cell, a plurality of fine-adjustable support blocks are provided on the insulating frame, a plurality of insulating sheets are fixed to the bottom of the support blocks, and metal columns are provided at both ends of the insulating frame, a magnetic sleeve that matches the metal column structure is provided on the outer side of the top end of the side panel, and a screw sleeve is provided on the outer side of the magnetic sleeve, and a stud for limiting the metal column is inserted inside the screw sleeve.

[0006] Preferably, a pressing block is fixed to the top end of the stud, and a horizontally distributed supporting block is provided on the outer side of the top end of the metal column.

[0007] Preferably, sleeve seats are provided at positions of the outer walls on both sides of the side plate below the magnetic sleeve, and the sleeve seats are consistent with the structure of the bottom end of the metal column.

[0008] Preferably, the front side of the support block is provided with a push block inserted in the front side of the insulating frame, and the front side of the insulating frame is provided with a plurality of movable openings cooperating with the push block, and the outer end of the push block extends to the outside of the front side of the insulating frame through the movable opening.

[0009] Preferably, screw blocks fixed on the insulating frame are provided on both sides of the outside of the movable opening, and adjusting screw pins are inserted into the inside of the screw blocks.

[0010] Preferably, an insert is fixed to the corresponding end of the adjusting screw pin, and both sides of the push block are provided with inserts that match the insert structure.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the insulation structure of the power battery module can simplify the installation process of the insulation sheet, and enhance the stability and durability of the insulation sheet, greatly reduce the risk of short circuit, and effectively improve the safety and reliability of the battery system. The insulation structure of the power battery module is provided with a plurality of fine-adjustable support blocks on the insulation frame and the insulation sheet is installed. The insulation frame can drive all the insulation sheets to be quickly placed between two adjacent battery cells, and the metal columns at both ends of the insulation frame and the magnetic sleeves, screw sleeves and studs on the outer side of the side plate form a magnetic limiting mechanism, which not only ensures the overall packaging integrity of the battery module, but also facilitates assembly and adjustment. At the same time, the convenient connection characteristics of the magnetic sleeve are used to improve the assembly efficiency and flexibility, and the stability and maintenance convenience of the battery module are improved as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the insulation structure of a power battery module of the utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure between the insulation frame and the side plate of the insulation structure of a power battery module of the utility model;

[0014] Figure 3 The utility model is an insulation structure of a power battery module Figure 1 The enlarged structural diagram at A in the middle;

[0015] Figure 4 The utility model is a schematic diagram of a partial top view of the insulation frame of the insulation structure of a power battery module.

[0016] In the figure: 1. lower bracket; 2. side panel; 3. battery cell; 4. insulating frame; 5. support block; 6. insulating sheet; 7. metal column; 8. magnetic sleeve; 9. sleeve seat; 10. screw sleeve; 11. stud; 12. pressure block; 13. support block; 14. push block; 15. movable opening; 16. screw block; 17. adjusting screw pin; 18. embedded block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0018] See also Figure 1-4The utility model provides a technical solution: an insulation structure of a power battery module, comprising a lower bracket 1, side panels 2 are arranged on both sides of the lower bracket 1, the bottom ends of the side panels 2 are connected to the lower bracket 1 by welding, a plurality of battery cells 3 are arranged between the side panels 2 and fixedly mounted on the top of the lower bracket 1 by screws, a laterally distributed insulation frame 4 is arranged on the top of the battery cell 3, a plurality of fine-adjustable support blocks 5 are arranged on the insulation frame 4, a plurality of insulating sheets 6 are bonded and fixed to the bottom of the support blocks 5, the insulating sheets 6 are existing organic solid insulating materials (such as polycarbonate (PC), polyimide (PI), polytetrafluoroethylene (PTFE), which have the characteristics of light weight, chemical corrosion resistance, easy processing, etc., and are widely used in electrical housings and insulating parts), and Both ends of the insulating frame 4 are welded and fixed with metal columns 7, and the outer side of the top of the side plate 2 is bonded and fixed with a magnetic sleeve 8 that matches the structure of the metal column 7, and the outer side of the magnetic sleeve 8 is welded and fixed with a screw sleeve 10, and the interior of the screw sleeve 10 is interspersed with a stud 11 for limiting the metal column 7 through a threaded structure. After the lower bracket 1 and the side plate 2 of this structure are transferred to a plurality of battery cells 3, the plurality of support blocks 5 on the insulating frame 4 can be pre-adjusted to laterally displace the insulating sheet 6 to a suitable position, so that the insulating frame 4 can drive all the insulating sheets 6 to be placed between two adjacent battery cells 3 at one time, and the two ends of the insulating frame 4 can be fixed by inserting the metal column 7 into the interior of the magnetic sleeve 8, and the stud 11 is used to rotate inside the screw sleeve 10 to insert the metal column 7 The insulating frame 4 is reinforced when inserted, so that the insulating frame 4 can be easily and accurately installed in the predetermined position, so that the insulating sheet 6 can be quickly and conveniently installed between each battery cell 3, which greatly simplifies the installation process, ensures the firmness of the connection, reduces the risk of short circuit, effectively improves the safety and reliability of the battery system, and solves the safety hazard problems caused by the complicated installation and fragility of the insulating sheet 6 in the prior art and the insufficient stability during use. A welded fixed pressing block 12 is fixed to the top of the stud 11, a rubber pad is bonded and fixed to the bottom of the pressing block 12, and a horizontally distributed support block 13 is provided on the outer side of the top of the metal column 7. The stud 11 of this structure can be rotated inside the screw sleeve 10 to press the pressing block 12 on the top of the support block 13 to insert the metal column 7 into the magnetic The magnetic sleeve 8 plays a reinforcing role to ensure the stability of the installation position of the insulating frame 4. The outer walls of both sides of the side plate 2 are located below the magnetic sleeve 8. The sleeve seat 9 is made of rubber. The bottom of the sleeve seat 9 is welded and fixed to the outer wall of the side plate 2 through a connecting block, and the sleeve seat 9 is consistent with the structure of the bottom end of the metal column 7. The metal column 7 of this structure is inserted into the bottom end of the magnetic sleeve 8 and will be synchronously squeezed and extended into the interior of the sleeve seat 9, which can further strengthen the metal column 7 when it is inserted. A push block 14 that is movably inserted into the front side of the insulating frame 4 is welded and fixed on the front side of the support block 5, and a number of movable openings 15 that cooperate with the push block 14 are provided on the front side of the insulating frame 4, and the outer end of the push block 14 extends to the outside of the front side of the insulating frame 4 through the movable opening 15.Both sides of the outer side of the movable opening 15 are provided with screw blocks 16 welded and fixed on the insulating frame 4, and the interior of the screw block 16 is interspersed with an adjusting screw pin 17 through a threaded structure, and an insert block 18 is welded and fixed at the corresponding end of the adjusting screw pin 17, and both sides of the push block 14 are provided with an inlay that matches the structure of the insert block 18. The support block 5 of this structure can slide in the movable opening 15 through the push block 14 and move on the front side of the insulating frame 4, and cooperate with the external screw block 16 and the internal adjusting screw pin 17 and the insert block 18 to form a fine fine-tuning mechanism. The push block 14 interacts with the insert block 18 through the inlay, and realizes precise forward and backward movement under the guidance of the movable opening 15, and the rotation of the adjusting screw pin 17 further adjusts the position of the push block 14, thereby applying precise longitudinal pressure regulation to the insulating sheet 6 to ensure that each insulating sheet 6 can be placed in a suitable position between the battery cells 3, and rubber strips are bonded and fixed to the upper and lower inner walls of the movable opening 15, and this rubber strip can make the push block 14 more stable when sliding in the movable opening 15. ,

[0019] Working principle: When using the insulation structure of the power battery module, first, after the lower bracket 1 and the side plate 2 are installed on several battery cells 3, several support blocks 5 on the insulation frame 4 can be pre-adjusted to adjust the position of the insulation sheet 6. The support block 5 first slides in the movable opening 15 through the push block 14 and moves in front of the insulation frame 4, and the adjusting screw pins 17 of the same group are rotated respectively. When the adjusting screw pin 17 rotates inside the screw block 16, it will drive the embedded block 18 to cooperate with the embedded opening on the push block 14, so as to limit and fix the push block 14 in real time until several insulation sheets 6 are fine-tuned to the appropriate position. At this time, the insulation frame 4 can be once Drive a number of insulating sheets 6 to be placed between two adjacent battery cells 3 for insulation. The two ends of the insulating frame 4 can be fixed by inserting the metal column 7 into the inside of the magnetic sleeve 8. When the metal column 7 is inserted into the magnetic sleeve 8, the bottom end will be synchronously squeezed and extended into the inside of the sleeve seat 9, and then the stud 11 is rotated until the stud 11 rotates to a suitable position inside the screw sleeve 10 so that the pressing block 12 is pressed on the top of the supporting block 13 to reinforce the insertion of the metal column 7 into the magnetic sleeve 8. In this way, the insulating frame 4 can be easily and accurately installed at the predetermined position, and the insulating sheet 6 can be installed between each battery cell 3, thereby completing a series of work.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An insulation structure of a power battery module, comprising a lower bracket (1), side plates (2) being provided on both sides of the lower bracket (1), a plurality of battery cells (3) being provided between the side plates (2) and being mounted on the top of the lower bracket (1), characterized in that: The top of the battery cell (3) is provided with an insulating frame (4) distributed in a transverse direction, the insulating frame (4) is provided with a plurality of finely adjustable support blocks (5), the bottom of the support blocks (5) is fixed with a plurality of insulating sheets (6), and both ends of the insulating frame (4) are provided with metal columns (7), the outer side of the top of the side plate (2) is provided with a magnetic sleeve (8) that matches the structure of the metal column (7), and the outer side of the magnetic sleeve (8) is provided with a screw sleeve (10), and the screw sleeve (10) is inserted with a stud (11) for limiting the metal column (7) inside.

2. The insulation structure of a power battery module according to claim 1, characterized in that: A pressing block (12) is fixed to the top end of the stud (11), and a horizontally distributed supporting block (13) is provided on the outer side of the top end of the metal column (7).

3. The insulation structure of a power battery module according to claim 1, characterized in that: The outer walls of both sides of the side plate (2) are provided with sleeve seats (9) at positions below the magnetic sleeve (8), and the sleeve seats (9) are consistent with the structure of the bottom end of the metal column (7).

4. The insulation structure of a power battery module according to claim 1, characterized in that: The front side of the support block (5) is provided with a push block (14) inserted into the front side of the insulating frame (4), and the front side of the insulating frame (4) is provided with a plurality of movable openings (15) that match the push block (14), and the outer end of the push block (14) extends to the outside of the front side of the insulating frame (4) through the movable opening (15).

5. The insulation structure of a power battery module according to claim 4, characterized in that: Screw blocks (16) fixed to the insulating frame (4) are provided on both sides of the outside of the movable opening (15), and an adjusting screw pin (17) is inserted into the inside of the screw block (16).

6. The insulation structure of a power battery module according to claim 5, characterized in that: An insert block (18) is fixed to one end corresponding to the adjusting screw pin (17), and both sides of the push block (14) are provided with insert openings that match the structure of the insert block (18).

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