Battery and battery pack

Abstract

The utility model discloses a battery and a battery pack, which are used for solving the technical problem that when an explosion-proof valve of the existing battery applied to a new energy automobile is broken through under an abnormal condition, gas and electrolyte in the battery are sprayed out towards people in the automobile, so that the people in the automobile are easy to be greatly dangerous. An outer shell of the battery comprises a bottom plate and a side plate surrounding the bottom plate, a mounting opening for mounting a top cover is formed in the top of the outer shell, a mounting through hole is formed in the bottom plate, an anti-explosion valve is arranged in the mounting through hole, and at least one flow guide line communicated with the mounting through hole is arranged on the inner side surface of the side plate. According to the design, the anti-explosion valve is arranged on the bottom plate of the outer shell, when the battery encounters an abnormal condition and the anti-explosion valve is broken through, gas and electrolyte in the battery are sprayed downwards, namely, are sprayed in the direction away from people in the vehicle, and the electrolyte can be quickly discharged from the mounting through hole through the design of the flow guide lines, so that the safety of the vehicle is improved. And the safety of people in the vehicle is effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery design technical field especially relates to a kind of battery and battery package. BACKGROUND

[0002] The explosion-proof valve of the conventional battery is generally arranged on the top cover of the battery, and the opening of the explosion-proof valve is upward with the vertical placement of the battery cell. When the battery is assembled into a battery module integrated into a vehicle, the opening of the explosion-proof valve is directed to the driver and passengers. If an abnormal situation occurs, the explosion-proof valve is broken, and the high-pressure gas and electrolyte in the battery will be sprayed towards the vehicle occupants, which undoubtedly poses a great threat to the personal safety of the vehicle occupants.

[0003] Therefore, finding a technical solution to solve the above technical problems has become an important topic for researchers in the field. SUMMARY

[0004] The utility model embodiment discloses a battery and battery package, to solve the existing application to new energy automobile battery when encountering abnormal situation explosion-proof valve is broken, the gas and electrolyte in the battery are sprayed towards the vehicle occupants, which easily causes great danger to the vehicle occupants.

[0005] The utility model provides a kind of battery, including shell body and the battery cell being set in the shell body, the shell body includes bottom plate and the side plate being surrounded in the bottom plate, the top of the shell body is equipped with the installation port for installing top cover, the bottom plate is equipped with installation through-hole, explosion-proof valve is arranged in the installation through-hole;

[0006] The inner side of the side plate is provided with at least one flow guide line connected to the installation through-hole.

[0007] Optionally, the flow guide line extends from the inner side of the side plate to the installation through-hole through the inner side of the bottom plate.

[0008] Optionally, the first end of the flow guide line is connected to the edge of the installation port or the first end of the flow guide line is away from the edge of the installation port by a first predetermined distance.

[0009] Optionally, when the number of flow guide lines is multiple, the multiple flow guide lines located on the inner side of the bottom plate are interconnected.

[0010] Optionally, the depth of the flow guide line is less than or equal to 50% of the wall thickness of the shell body.

[0011] Optionally, the connection between the two adjacent side plates forms an inner side corner, and the inner side corner is provided with a flow guide pipe.

[0012] The inside of the outer shell body is further provided with a support plate for supporting the battery cell, the support plate is located above the bottom plate and is provided with an avoiding through hole corresponding to the mounting through hole;

[0013] The flow guide pipe comprises a vertical part and a horizontal part, the vertical part extends along the height direction of the outer shell body, and the top end of the vertical part is provided with a first opening;

[0014] The horizontal part is embedded in the inside of the support plate, and the end of the horizontal part away from the vertical part is provided with a second opening, and the second opening is arranged on the inner side wall of the avoiding through hole.

[0015] Optionally, the top opening of the vertical part is away from the edge of the mounting hole by a second preset distance.

[0016] Optionally, the cross section of the vertical part is a circular arc surface matched with the arc angle of the battery cell.

[0017] Optionally, the mounting through hole is mounted with a support frame, and the support frame is attached to the surface of the explosion-proof valve facing the battery cell.

[0018] The utility model discloses an embodiment of a battery pack, comprising installation shell and above -mentioned battery;

[0019] The battery is installed in the installation shell.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] In the battery of the embodiment, the bottom plate of the outer shell body is provided with a mounting through hole, the explosion-proof valve is installed in the mounting through hole, and the inner side surface of the side plate is provided with at least one flow guide line communicating with the mounting through hole. In the above design, the explosion-proof valve is arranged on the bottom plate of the outer shell body, when the battery encounters an abnormal situation and the explosion-proof valve is broken, the gas and electrolyte in the battery are sprayed downward, that is, sprayed away from the direction of the personnel in the vehicle, and through the design of the flow guide line, the electrolyte can be quickly discharged from the mounting through hole, effectively ensuring the safety of the personnel in the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 A structural schematic diagram of a battery provided by the utility model embodiment is shown.

[0024] Figure 2 An explosion view of the structure of the battery is provided for the embodiment of the utility model;

[0025] Figure 3 A structure schematic view of the bottom of the battery is provided for the embodiment of the utility model;

[0026] Figure 4 An internal structure schematic view of the outer shell of the battery is provided for the embodiment of the utility model;

[0027] Figure 5 For Figure 4 The perspective view is shown in the figure.

[0028] Figure 6 For Figure 4 The cross-sectional view is shown in the figure.

[0029] Figure 7 For Figure 6 The structure enlarged view of the explosion-proof valve in the battery is shown in the figure.

[0030] Illustration: outer shell 1, battery cell 2, explosion-proof valve 3, flow guide lines 4, first end 401 of flow guide lines, second end 402 of flow guide lines, flow guide pipe 5, vertical part 501, horizontal part 502, first opening 503, second opening 504, support flat plate 6, avoidance through hole 7, bottom plate 8, mounting through hole 9, support frame 10, side plate 11, top cover 12, mounting port 13. DETAILED DESCRIPTION

[0031] The utility model discloses a kind of battery and battery pack, for solving the battery of existing application to new energy automobile meets abnormal condition explosion-proof valve is broken, gas and electrolyte in battery are sprayed to the person in car, it is easy to cause great danger to the person in car technical problem.

[0032] In order to make the personnel in this technical field better understand the utility model scheme, the utility model is further explained in detail below in conjunction with the drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0033] Please refer to Figures 1 to 7 The utility model embodiment provides a kind of battery, including outer shell 1 and the battery cell 2 being set in the outer shell 1, the outer shell 1 includes bottom plate 8 and the side plate 11 being surrounded in the bottom plate 8, the top of the outer shell 1 is equipped with the mounting port 13 for installing top cover 12;

[0034] The base plate 8 has an installation through hole 9, and an explosion-proof valve 3 is installed in the installation through hole 9. The inner side of the side plate 11 has at least one flow guide pattern 4 that communicates with the installation through hole 9.

[0035] In this embodiment of the battery, the bottom plate 8 of the outer casing 1 has a mounting through hole 9, and an explosion-proof valve 3 is installed in the mounting through hole 9. In the above design, when the battery encounters an abnormal situation and the explosion-proof valve 3 is ruptured, the gas and electrolyte inside the battery are sprayed downwards, that is, sprayed away from the people in the vehicle, effectively ensuring the safety of the people in the vehicle.

[0036] Furthermore, such as Figures 4 to 6 As shown, in this embodiment, the flow guide pattern 4 extends from the inner side of the side plate 11 through the inner side of the bottom plate 8 to the mounting through hole 9.

[0037] It should be noted that the flow guide pattern 4 in this embodiment is specifically a groove recessed into the inner side of the side plate 11. With the above design, when the battery encounters an abnormal situation and the explosion-proof valve 3 is broken, the flow guide pattern 4 can quickly guide the electrolyte to be discharged to the installation through hole 9, reduce the reaction speed of the battery cell 2 inside the battery, reduce the probability of battery fire and explosion, and buy more reaction time for the user.

[0038] Furthermore, such as Figure 6 and Figure 7 As shown, in this embodiment, the first end of the flow guiding pattern 4 is connected to the edge of the mounting port 13 or the first end of the flow guiding pattern 4 is at a first preset distance from the edge of the mounting port 13.

[0039] Specifically, in this embodiment, the first preset distance is preferably 5-10mm. Under this design, the first end of the flow guide ripple 4 is a certain distance away from the edge of the mounting port 13, which can prevent the top cover 12 from not sealing properly when it is subsequently installed in the mounting port 13. This ensures the battery's sealing performance.

[0040] It should be noted that this embodiment does not restrict the setting position of the first end of the flow guide 4. Designers can choose a suitable setting position according to the actual situation.

[0041] Furthermore, such as Figure 5 As shown, in this embodiment, the number of flow guiding patterns 4 can be multiple, that is, multiple flow guiding patterns 4 can be provided on the inner surface of multiple side plates 11. Each side plate 11 can be provided with 2-8 flow guiding patterns 4. The specific number of flow guiding patterns 4 can be selected according to the size of the outer shell 1, and this embodiment does not impose any limitations.

[0042] In addition, it should be noted that the more the number of the flow guide lines 4, the faster the electrolyte flow speed, thereby further reducing the probability of battery fire and explosion.

[0043] Further, as shown in Figure 5 when the number of the flow guide lines 4 is multiple, the multiple flow guide lines 4 located on the inner side of the bottom plate 8 are in communication with each other.

[0044] It should be noted that through the above design, the electrolyte flow speed can be further accelerated.

[0045] Further, the wall thickness of the outer shell 1 in the embodiment is 0.5-5mm, and the depth of the flow guide lines 4 is less than or equal to 50% of the wall thickness of the outer shell 1, i.e. 0.25-2.5mm. Under this design, the flow guide lines 4 can have a certain depth to accommodate a certain volume of electrolyte, thereby ensuring that the flow guide lines 4 can quickly guide the electrolyte to be discharged to the mounting through hole 9. If the depth of the flow guide lines 4 is too small, it cannot accommodate a certain volume of electrolyte and cannot effectively guide the electrolyte. If the depth of the flow guide lines 4 is too large, it will affect the structural strength of the outer shell 1.

[0046] It should be noted that the embodiment does not limit the depth of the flow guide lines 4, and the designer can design the appropriate thickness of the flow guide lines 4 according to the size of the outer shell 1.

[0047] Further, as shown in Figures 4 to 7 the inner side corner of the connection between the two adjacent side plates 11 is provided with a flow guide pipe 5;

[0048] The inner part of the outer shell 1 is also provided with a support flat plate 6 for supporting the battery cell 2, and the support flat plate 6 is located above the bottom plate 8 and is provided with a relief through hole 7 corresponding to the mounting through hole 9;

[0049] The flow guide pipe 5 includes a vertical part 501 and a horizontal part 502, the vertical part 501 extends along the height direction of the outer shell 1, and the top end of the vertical part 501 is provided with a first opening 503;

[0050] The horizontal part 502 is embedded in the inner part of the support flat plate 6, and the end of the horizontal part 502 away from the vertical part 501 is provided with a second opening 504, and the second opening 504 is provided on the inner side wall of the relief through hole 7.

[0051] Specifically, the thickness of the support plate 6 in the embodiment is 2-20 mm, which is arranged above the inner bottom wall 8 of the outer shell 1 and closely attached to the inner bottom wall 8 of the outer shell 1. If the thickness of the support plate 6 is too large, it will affect the volume of the electrolyte inside the battery. If the thickness of the support plate 6 is too small, it cannot accommodate the horizontal part 502.

[0052] It should be noted that through the above design, when the battery encounters an abnormal situation and the explosion-proof valve 3 is broken, the flow guide pipe 5 can guide the gas in the outer shell 1 to be discharged from the mounting hole 9 through the avoidance hole 7. On the one hand, the flow guide pipe 5 can buffer part of the gas, so as to avoid the risk of explosion caused by excessive gas flow when the explosion-proof valve 3 is broken. On the other hand, the flow guide pipe 5 can also guide the electrolyte to be discharged from the mounting hole 9 through the avoidance hole 7.

[0053] Further, as shown in Figures 4 to 6 , the top opening of the vertical part 501 in the embodiment is away from the edge of the mounting port 13 by a second predetermined distance.

[0054] Specifically, the second predetermined distance in the embodiment is 1 / 7-1 / 5 of the height of the prism at the inner corner of the outer shell 1.

[0055] It should be noted that through the above design, the top opening of the vertical part 501 is different in height from the edge of the mounting port 13, which is beneficial to the leakage of gas and electrolyte, and can prevent the situation that the sealing between the top cover 12 and the mounting port 13 is not tight when the top cover 12 is subsequently installed in the mounting port 13. The sealing of the battery is ensured.

[0056] Further, as shown in Figure 6 , the cross section of the vertical part 501 in the embodiment is a circular arc surface matching the arc angle of the battery cell 2.

[0057] It should be noted that through the above design, the vertical part 501 can be closely attached to the battery cell 2, and the internal space of the outer shell 1 is effectively utilized. In addition, in other specific embodiments, the cross section of the vertical part 501 can also be other shapes, which are specifically designed according to the specific shape of the battery cell 2.

[0058] Further, as shown in Figure 7 , the mounting hole 9 in the embodiment is installed with a support frame 10, which is attached to the surface of the explosion-proof valve 3 facing the battery cell 2.

[0059] It should be noted that the support frame 10 in the embodiment plays a supporting role for the explosion-proof valve 3, avoiding deformation of the explosion-proof valve 3 caused by external force. The support frame 10 can be made of insulating materials such as plastic.

[0060] Please refer to Figures 1 to 7The utility model discloses a battery pack, including installation casing and above-mentioned battery;

[0061] The battery is installed in the installation casing.

[0062] Specifically, the battery pack in the embodiment can be specifically used for new energy vehicles, when the battery pack is installed on the new energy vehicle, the top cover 12 of the battery is arranged upwards, and the explosion-proof valve 3 of the battery is arranged downwards, that is, away from the direction of the person in the vehicle.

[0063] Through the above design, when the battery encounters an abnormal situation and the explosion-proof valve 3 is broken, the gas and electrolyte in the battery are sprayed downwards, that is, away from the direction of the person in the vehicle, effectively ensuring the safety of the person in the vehicle.

[0064] In addition, by increasing the flow guide lines 4, when the explosion-proof valve 3 is broken, the electrolyte can be quickly guided to leak out, reducing the reaction speed in the battery cell 2, and gaining more reaction time for the person.

[0065] By increasing the flow guide pipe 5, when the explosion-proof valve 3 is broken, the gas can be guided to leak out; on the one hand, the flow guide pipe 5 can buffer part of the gas, avoiding the risk of explosion when the gas flow is too large and the explosion-proof valve 3 is broken; on the other hand, the flow guide pipe 5 can also guide the electrolyte to leak out.

[0066] The above describes a battery and a battery pack provided by the utility model in detail, for the general technical personnel in the field, according to the idea of the embodiment of the utility model, the specific implementation mode and the application range will have the change, and the above, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A battery comprising an outer casing (1) and an electric core arranged in the outer casing (1), the outer casing (1) comprising a bottom plate (8) and a side plate (11) surrounding the bottom plate (8), a mounting opening (13) for mounting a top cover (12) being arranged at the top of the outer casing (1), characterized in that, The bottom plate (8) is provided with an installation through hole (9), and the installation through hole (9) is provided with an explosion-proof valve (3). At least one flow guide line (4) is arranged on the inner side of the side plate (11) and communicated with the installation through hole (9).

2. The battery of claim 1, wherein, The flow guide line (4) extends from the inner side of the side plate (11) to the installation through hole (9) through the inner side of the bottom plate (8).

3. The battery of claim 1, wherein, The first end of the flow guide line (4) is connected to the edge of the installation port (13) or the first end of the flow guide line (4) is away from the edge of the installation port (13) by a first preset distance.

4. The battery of claim 2, wherein, When the number of the flow guide lines (4) is multiple, the multiple flow guide lines (4) on the inner side of the bottom plate (8) are communicated with each other.

5. The battery of claim 1, wherein, The depth of the flow guide line (4) is less than or equal to 50% of the wall thickness of the outer shell (1).

6. The battery of claim 1, wherein, The inner side corner of the connection between the two adjacent side plates (11) is provided with a flow guide pipe (5). The inner side of the outer shell (1) is further provided with a support flat plate (6) for supporting the electric core (2), the support flat plate (6) is located above the bottom plate (8) and is provided with an avoiding through hole (7) corresponding to the installation through hole (9); The flow guide pipe (5) comprises a vertical part (501) and a horizontal part (502), the vertical part (501) extends along the height direction of the outer shell (1), and the top end of the vertical part (501) is provided with a first opening (503); The horizontal part (502) is embedded in the inner side of the support flat plate (6), and the end of the horizontal part (502) away from the vertical part (501) is provided with a second opening (504), and the second opening (504) is arranged on the inner side wall of the avoiding through hole (7).

7. The battery of claim 6, wherein, The top opening of the vertical part (501) is away from the edge of the installation port (13) by a second preset distance.

8. The battery of claim 6, wherein, The cross section of the vertical part (501) is a circular arc surface matched with the arc angle of the electric core (2).

9. The battery of claim 1, wherein, The installation through hole (9) is provided with a support frame (10), and the support frame (10) is attached to the surface of the explosion-proof valve (3) facing the electric core (2).

10. A battery pack, characterized by, The battery comprises an installation shell and the battery as claimed in any one of claims 1 to 9. The battery is installed in the installation shell.

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