Safety protection structure of battery pack

Abstract

The utility model provides a safety protection structure of a battery pack, which is characterized in that an insulating structure is arranged above the battery pack, the insulating structure is arranged between a connecting knot and a battery cell, a plurality of first safety protection structures and second safety protection structures are arranged on the insulating structure, each first safety protection structure comprises a boss and a side raised line, and the side raised line is arranged on the boss. The side protruding strips are arranged on the two side edges of the insulating structure, the bosses are arranged on the side edges of the connecting structure, the second safety protection structure is arranged between the bosses on the two sides, and the first safety protection structure and the second safety protection structure are both higher than the connecting structure. Therefore, when the battery pack is assembled, metal articles fall off and conductive sparking among the battery cells is not caused, and a safety protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, and more specifically to a safety protection structure of a battery pack. Background Art

[0002] Lithium-ion batteries have the advantages of high specific energy, many cycles and long storage time. They are widely used not only in portable electronic devices such as mobile phones, digital cameras and laptops, but also in large and medium-sized electric equipment such as electric vehicles, electric bicycles and power tools.

[0003] The utility model patent with announcement number CN 215644714 U discloses a battery pack structure used for new energy storage and low-speed electric vehicles, including a battery pack; a battery module body is arranged in the battery pack; the front and rear sides of the battery pack are respectively provided with a first side welding plate and a second side welding plate; elastic foam is respectively pasted on the inner sides of the welding reinforcement plates and the second side welding plates on the left and right sides of the battery pack; each battery module body has an upper pressure strip on the top; the left and right ends of the upper pressure strip are respectively fixedly connected to the battery pack; a side pressure strip is arranged on the inner side of the first side welding plate; the side pressure strip includes a side pressure strip body; a fixing stud is welded on the front side of the side pressure strip body, and is fixedly connected to the existing lithium battery protection plate by screws.

[0004] However, the battery pack in this design does not have any safety protection measures. If metal objects fall during the assembly process, it is easy to cause the battery cells to ignite, resulting in a safety hazard. Therefore, how to set up a safety protection structure between the battery cells in the battery pack is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes a safety protection structure of a battery pack, by arranging an insulating structure 2 above the battery pack, the insulating structure 2 is arranged between the connecting structure 6 and the battery cell 1, and a plurality of first safety protection structures 21 and second safety protection structures 22 are arranged on the insulating structure 2, the first safety protection structure 21 includes a boss 211 and a side convex strip 212, the side convex strip 212 is arranged on both side edges of the insulating structure 2, the boss 211 is arranged on the side edge of the connecting structure 6, and the second safety protection structure 22 is arranged between the bosses 211 on both sides, the first safety protection structure 21 and the second safety protection structure 22 are both higher than the connecting structure 6, so that when assembling the battery pack, the falling of metal objects will not cause conductive sparks between the battery cells 1, thereby playing a safety protection role.

[0006] A safety protection structure for a battery pack, the battery pack is composed of a plurality of battery cells 1 arranged in a row, and the positive and negative electrodes of adjacent battery cells 1 are arranged alternately, characterized in that: an insulating structure 2 and a plurality of connecting structures 6 are provided above the battery pack, the connecting structure 6 connects the positive and negative electrodes of two adjacent battery cells 1, the insulating structure 2 is arranged between the connecting structure 6 and the battery cells 1, a plurality of first safety protection structures 21 and second safety protection structures 22 are provided on the insulating structure 2, the first safety protection structure 21 includes a boss 211 and a side convex strip 212, the side convex strip 212 is arranged on both side edges of the insulating structure 2, the boss 211 is arranged on the side edge of the connecting structure 6, the second safety protection structure 22 is arranged between the bosses 211 on both sides, the first safety protection structure 21 and the second safety protection structure 22 are both higher than the connecting structure 6, so that when assembling the battery pack, the falling of metal objects will not cause conductive sparks between the battery cells 1, thereby playing a safety protection role.

[0007] Furthermore, the insulation structure 2, the first safety protection structure 21 and the second safety protection structure 22 are integrally formed.

[0008] Furthermore, one side of the multiple bosses 211 on the same side is connected to the side convex strip 212, so that the first safety protection structure 21 is integrated, increasing the protection area, and the bosses 211 are evenly spaced on the side of the connecting structure 6 to maintain a safe electrical distance between adjacent connecting structures 6 and enhance the strength of the insulating structure 2.

[0009] Furthermore, the second safety protection structure 22 is composed of at least two middle convex strips 222, which extend from one end of the top of the battery pack to the other end, thereby increasing the protection area and cooperating with the boss 211 and the side convex strips 212 to achieve safety protection at multiple angles, including horizontal, vertical and oblique directions.

[0010] Furthermore, a plurality of collectors 3 are provided on the insulating structure 2, one end of the collector 3 is connected to the connecting structure 6 above the battery cell 1, and the other end is connected to the insulating structure 2, and is used to collect the temperature and voltage of the battery cell 1. The collector 3 is electrically connected to a receiver at one end of the battery pack through a collection line.

[0011] Furthermore, the insulating structure 2 is provided with a positioning wire groove 33, and the positioning wire groove 33 is evenly spaced between adjacent collectors 3 for locating the position of the collection line. The collection line of the previous collector 3 passes through the positioning wire groove 33 and is pulled to the next positioning wire groove 33 and then passes through the next positioning wire groove 33, so that the collection lines far away from the receiver are distributed in an orderly manner, which will not cause tangled lines or safety hazards caused by tangled lines.

[0012] Furthermore, a mounting groove 4 is provided on the insulating structure 2, so that the connecting structure 6 is placed in the mounting groove 4, and the height of the connecting structure 6 is reduced to indirectly play a safety protection role.

[0013] Furthermore, the connection structure 6 is made of elastic conductive material.

[0014] Furthermore, an upward protrusion is provided in the middle of the connection structure 6, so that when the battery pack is squeezed, the displacement caused by the squeezing can be buffered, so that the connection point between the connection structure 6 and the battery cell 1 is not directly subjected to force to damage the connection point.

[0015] Furthermore, an explosion-proof groove 5 is provided between the second safety protection structures 22 to provide a safe space for the explosion-proof membrane on the top of the battery cell 1 .

[0016] The beneficial effects of the utility model include: a safety protection structure of a battery pack, the battery pack being composed of a plurality of battery cells 1 arranged in a row, the positive and negative poles of adjacent battery cells 1 being arranged alternately, an insulating structure 2 and a plurality of connecting structures 6 being arranged above the battery pack, the connecting structure 6 connecting the positive pole and the negative pole of two adjacent battery cells 1, the insulating structure 2 being arranged between the connecting structure 6 and the battery cells 1, a plurality of first safety protection structures 21 and second safety protection structures 22 being arranged on the insulating structure 2, the first safety protection structure 21 comprising a boss 211 and a side convex strip 212, the side convex strip 212 being arranged on both side edges of the insulating structure 2, the boss 211 being arranged on the side edge of the connecting structure 6, the second safety protection structure 22 being arranged between the bosses 211 on both sides, the first safety protection structure 21 and the second safety protection structure 22 being both higher than the connecting structure 6, so that when assembling the battery pack, the falling of metal objects will not cause conductive sparks between the battery cells 1, thereby playing a safety protection role. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is an overall structural diagram of the safety protection structure of the battery pack.

[0018] Figure 2 This is an insulation structure diagram of the safety protection structure of the battery pack of the present utility model.

[0019] Figure 3 It is a partial enlarged view of the first safety protection structure of the safety protection structure of the battery pack of the present utility model.

[0020] Figure 4 It is a partial enlarged view of the second safety protection structure of the safety protection structure of the battery pack of the present utility model.

[0021] Main component symbols

[0022] Battery cell 1, insulation structure 2, connection structure 6, first safety protection structure 21, boss 211, side convex strip 212, second safety protection structure 22, middle convex strip 222, collector 3, positioning wire groove 33, installation groove 4, explosion-proof groove 5.

[0023] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0024] like Figure 1 As shown, it is the overall structure diagram of the safety protection structure of the battery pack of the utility model; Figure 2 As shown, it is an insulation structure diagram of the safety protection structure of the battery pack of the utility model; Figure 3 As shown, it is a partial enlarged view of the first safety protection structure of the safety protection structure of the battery pack of the utility model; Figure 4 The figure shows a partial enlarged view of the second safety protection structure of the battery pack of the present invention.

[0025] Embodiment 1:

[0026] A safety protection structure for a battery pack, the battery pack is composed of a plurality of battery cells 1 arranged in a row, and the positive and negative electrodes of adjacent battery cells 1 are arranged alternately, characterized in that: an insulating structure 2 and a plurality of connecting structures 6 are provided above the battery pack, the connecting structure 6 connects the positive and negative electrodes of two adjacent battery cells 1, the insulating structure 2 is arranged between the connecting structure 6 and the battery cells 1, a plurality of first safety protection structures 21 and second safety protection structures 22 are provided on the insulating structure 2, the first safety protection structure 21 includes a boss 211 and a side convex strip 212, the side convex strip 212 is arranged on both side edges of the insulating structure 2, the boss 211 is arranged on the side edge of the connecting structure 6, the second safety protection structure 22 is arranged between the bosses 211 on both sides, the first safety protection structure 21 and the second safety protection structure 22 are both higher than the connecting structure 6, so that when assembling the battery pack, the falling of metal objects will not cause conductive sparks between the battery cells 1, thereby playing a safety protection role.

[0027] The insulating structure 2, the first safety protection structure 21 and the second safety protection structure 22 are integrally formed.

[0028] One side of the multiple bosses 211 on the same side is connected to the side convex strip 212, so that the first safety protection structure 21 is integrated, increasing the protection area, and the bosses 211 are evenly spaced on the side of the connecting structure 6 to maintain a safe electrical distance between adjacent connecting structures 6 and enhance the strength of the insulating structure 2.

[0029] The second safety protection structure 22 is at least two middle convex strips 222, which extend from one end of the top of the battery pack to the other end to increase the protection area, and cooperate with the boss 211 and the side convex strips 212 to achieve horizontal, vertical and oblique multi-angle safety protection.

[0030] The insulating structure 2 is also provided with a plurality of collectors 3, one end of the collector 3 is connected to the connection structure 6 above the battery cell 1, and the other end is connected to the insulating structure 2, for collecting the temperature and voltage of the battery cell 1. The collector 3 is electrically connected to a receiver at one end of the battery pack through a collection line.

[0031] The insulating structure 2 is provided with positioning wire grooves 33, and the positioning wire grooves 33 are evenly spaced between adjacent collectors 3 for locating the position of the collection line. The collection line of the previous collector 3 passes through the positioning wire groove 33, is pulled to the next positioning wire groove 33, and then passes through the next positioning wire groove 33, so that the collection lines far away from the receiver are distributed in an orderly manner, which will not cause disorderly lines or safety hazards caused by disorderly lines.

[0032] The insulating structure 2 is also provided with a mounting groove 4, so that the connecting structure 6 is placed in the mounting groove 4, and the height of the connecting structure 6 is reduced to indirectly play a safety protection role.

[0033] The connection structure 6 is made of elastic conductive material, and an upward protrusion is provided in the middle of the connection structure 6, so that when the battery pack is squeezed, the displacement caused by the squeezing can be buffered, so that the connection point between the connection structure 6 and the battery cell 1 is not directly subjected to force to damage the connection point.

[0034] An explosion-proof groove 5 is also provided between the second safety protection structures 22 to provide a shelter for the explosion-proof membrane on the top of the battery cell 1 .

[0035] The beneficial effects of the utility model include: a safety protection structure of a battery pack, the battery pack being composed of a plurality of battery cells 1 arranged in a row, the positive and negative poles of adjacent battery cells 1 being arranged alternately, an insulating structure 2 and a plurality of connecting structures 6 being arranged above the battery pack, the connecting structure 6 connecting the positive pole and the negative pole of two adjacent battery cells 1, the insulating structure 2 being arranged between the connecting structure 6 and the battery cells 1, a plurality of first safety protection structures 21 and second safety protection structures 22 being arranged on the insulating structure 2, the first safety protection structure 21 comprising a boss 211 and a side convex strip 212, the side convex strip 212 being arranged on both side edges of the insulating structure 2, the boss 211 being arranged on the side edge of the connecting structure 6, the second safety protection structure 22 being arranged between the bosses 211 on both sides, the first safety protection structure 21 and the second safety protection structure 22 being both higher than the connecting structure 6, so that when assembling the battery pack, the falling of metal objects will not cause conductive sparks between the battery cells 1, thereby playing a safety protection role.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A safety protection structure of a battery pack, the battery pack comprising a plurality of battery cells (1) arranged in a row, the positive and negative electrodes of adjacent battery cells (1) being arranged alternately, characterized in that: An insulating structure (2) and a plurality of connecting structures (6) are provided above the battery pack. The connecting structure (6) connects the positive and negative electrodes of two adjacent battery cells (1). The insulating structure (2) is provided between the connecting structure (6) and the battery cells (1). The insulating structure (2) is provided with a plurality of first safety protection structures (21) and second safety protection structures (22). The first safety protection structure (21) comprises a boss (211) and a side convex strip (212). The side convex strip (212) is provided on both sides of the insulating structure (2). The boss (211) is provided on the side of the connecting structure (6). The second safety protection structure (22) is provided between the bosses (211) on both sides. Both the first safety protection structure (21) and the second safety protection structure (22) are higher than the connecting structure (6). When assembling the battery pack, the falling of metal objects will not cause electrical conduction and sparking between the battery cells (1), thereby achieving a safety protection effect.

2. The safety protection structure of the battery pack according to claim 1, characterized in that: The insulating structure (2), the first safety protection structure (21) and the second safety protection structure (22) are integrally formed.

3. The safety protection structure of the battery pack according to claim 1, characterized in that: One side of the plurality of bosses (211) on the same side is connected to the side convex strip (212), so that the first safety protection structure (21) is integrated, thereby increasing the protection area; the bosses (211) are evenly spaced on the side of the connection structure (6), so as to retain a safe electrical distance between adjacent connection structures (6), and to enhance the strength of the insulation structure (2).

4. The safety protection structure of the battery pack according to claim 1, characterized in that: The second safety protection structure (22) is at least two middle convex strips (222), and the middle convex strips (222) extend from one end of the top of the battery pack to the other end to increase the protection area and cooperate with the boss (211) and the side convex strips (212).

5. The safety protection structure of the battery pack according to claim 1, characterized in that: A plurality of collectors (3) are also provided on the insulating structure (2); one end of the collector (3) is connected to the connection structure (6) above the battery cell (1), and the other end is connected to the insulating structure (2); the collector (3) is electrically connected to a receiver at one end of the battery pack via a collection line.

6. The safety protection structure of the battery pack according to claim 5, characterized in that: The insulating structure (2) is provided with positioning wire grooves (33), which are evenly spaced between adjacent collectors (3) and are used to locate the position of a collection line. The collection line of a preceding collector (3) passes through the positioning wire groove (33), is pulled toward a succeeding positioning wire groove (33), and then passes through the succeeding positioning wire groove (33).

7. The safety protection structure of the battery pack according to claim 1, characterized in that: The insulating structure (2) is also provided with a mounting groove (4), so that the connecting structure (6) is placed in the mounting groove (4) and the height of the connecting structure (6) is reduced.

8. The safety protection structure of the battery pack according to claim 7, characterized in that: The connecting structure (6) is made of elastic conductive material.

9. The safety protection structure of the battery pack according to claim 1, characterized in that: An upward protrusion is provided in the middle of the connection structure (6), so that when the battery pack is squeezed, the displacement caused by the squeezing is buffered, so that the connection point between the connection structure (6) and the battery cell (1) is not directly subjected to force to damage the connection point.

10. The safety protection structure of the battery pack according to claim 1, characterized in that: An explosion-proof groove (5) is also provided between the second safety protection structures (22).

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