battery

Abstract

The utility model relates to the technical field of energy storage, and particularly relates to a battery. The battery comprises a shell, a battery cell group, a top cover and a plastic support. The shell has a receiving cavity, and the battery cell group is arranged in the receiving cavity. The top cover is arranged on the top of the shell and closes the receiving cavity, and the top cover has a first surface and a second surface facing away from each other, and the second surface faces the battery cell group, and the two sides of the second surface are provided with first insulation support blocks. The plastic support is connected to the second surface of the top cover, and the plastic support is arranged between the top cover and the battery cell group, the two sides of the plastic support are provided with first grooves, and the first insulation support blocks are accommodated in the first grooves. By arranging the first grooves for accommodating the first insulation support blocks on the two sides of the plastic support, the distance between the first insulation support blocks and the top surface of the battery cell group can be reduced, and the time when the first insulation support blocks abut against the top surface of the battery cell group during melting of the plastic support can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a battery. Background Technology

[0002] A battery is a device or system that stores electrical energy in the form of chemical energy and releases it back as electrical energy when needed. Batteries are a key component of modern energy systems, especially in the transition to renewable energy, and are one of the core infrastructures for building flexible, stable, clean, and efficient modern energy systems, playing an indispensable role in optimizing energy utilization.

[0003] In the prior art, the top cover of the battery and the cell assembly are usually separated by a plastic support component. However, when the cell assembly experiences thermal runaway, the temperature of the cell assembly far exceeds the melting point of the plastic support component, causing the plastic support component to melt. Without the support of the plastic support component, the cell assembly may move upward and stick to the top cover, further affecting the safety of the battery. Utility Model Content

[0004] This utility model provides a battery for restricting the upward movement of the battery cell assembly and its fit with the top cover after the plastic support melts due to thermal failure of the battery cell assembly.

[0005] This utility model provides a battery, comprising: A housing having a receiving cavity; A battery cell assembly, wherein the battery cell assembly is disposed within the receiving cavity; A top cover, disposed on the top of the housing and enclosing the receiving cavity, the top cover having a first surface and a second surface facing away from each other, the second surface facing the cell assembly, and first insulating support blocks disposed on both sides of the second surface; and A plastic support component is connected to the second surface of the top cover and disposed between the top cover and the battery cell assembly. A first groove is provided on both sides of the plastic support component, and the first insulating support block is accommodated in the first groove.

[0006] In some embodiments, the first insulating support block is configured to protrude from the first surface toward the second surface. In some embodiments, the first insulating support block abuts against the bottom wall of the first groove.

[0007] In some embodiments, there are four of each of the first insulating support blocks and the first grooves. The four first insulating support blocks are respectively disposed at the four corners of the second surface, and the four first insulating support blocks are respectively housed in the four first grooves.

[0008] In some embodiments, the plastic support includes: First protrusion; Two second protrusions are respectively disposed on both sides of the first protrusion at a distance, and each of the two second protrusions is provided with the first groove; and Two plates, one of which is connected between the first boss and one of the second bosses, and the other plate is connected between the first boss and the other of the second bosses.

[0009] In some embodiments, the second surface is further provided with a second insulating support block, which is located between the first insulating support blocks on both sides; the first boss is provided with a second groove, and the second insulating support block is accommodated in the second groove. In some embodiments, the second insulating support block is configured to protrude from the first surface toward the second surface. In some embodiments, the second insulating support block abuts against the bottom wall of the second groove. In some embodiments, the number of the second insulating support blocks is at least two, the number of the second grooves is at least two, and the number of the second grooves is the same as the number of the second insulating support blocks, with at least two second insulating support blocks being disposed in at least two second grooves in a one-to-one correspondence.

[0010] In some embodiments, the number of the second insulating support blocks is four, and the four second grooves are disposed at the four corners of the first boss.

[0011] This application provides a battery that, compared with the prior art, has at least the following advantages: When the plastic support melts, the first insulating support blocks on both sides of the second surface of the top cover can abut against the top surface of the battery cell assembly, so that a certain space is maintained between the top cover and the top surface of the battery cell assembly, which restricts the battery cell assembly from moving upward to fit against the top cover and avoids further affecting the safety of the battery. By providing the first grooves on both sides of the plastic support for accommodating the first insulating support blocks, the distance between the first insulating support blocks and the top surface of the battery cell assembly can be reduced, and the time when the plastic support melts can be reduced by the first insulating support blocks abutting against the top surface of the battery cell assembly. Attached Figure Description

[0012] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the battery structure provided in the embodiments of this application; Figure 2This is an exploded view of the battery cell assembly and casing provided in an embodiment of this application; Figure 3 This is an exploded view of the top cover and plastic support provided in the embodiments of this application; Figure 4 This is a schematic diagram of the top cover provided in an embodiment of this application from another perspective; Figure 5 This is a schematic diagram of the structure of the plastic support provided in the embodiments of this application.

[0014] Figure label: 1-Battery; 11-Shell; 111-Receiving cavity; 12-cell pack; 13-Top cover; 131-First surface; 132-Second surface; 133-First insulating support block; 134-Second insulating support block; 14-Plastic support component; 141-First boss; 1411-Second groove; 142-Second boss; 1421-First groove; 143-Plate body; 21-Exhaust port; 22-Exhaust chamber; 23-Ventilation port. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] In this application, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0017] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0018] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0019] Please refer to the following: Figure 1 , Figure 2 and Figure 3 This application provides a battery 1, including a casing 11, a cell assembly 12, a top cover 13, and a plastic support 14. The casing 11 has a receiving cavity 111, and the cell assembly 12 is disposed within the receiving cavity 111. See also... Figure 3 , Figure 4 and Figure 5 A top cover 13 is disposed on the top of the housing 11 and closes the receiving cavity 111. The top cover 13 has a first surface 131 and a second surface 132 facing away from each other. The second surface 132 faces the cell assembly 12. First insulating support blocks 133 are provided on both sides of the second surface 132. A plastic support member 14 is connected to the second surface 132 of the top cover 13 and is disposed between the top cover 13 and the cell assembly 12. First grooves 1421 are provided on both sides of the plastic support member 14, and the first insulating support blocks 133 are accommodated in the first grooves 1421.

[0020] The battery 1 provided in this application embodiment can be in the shape of a cuboid when in the assembled state. Of course, the battery 1 can also be other shapes, which are not limited here. For ease of description, this application embodiment uses the shape of the battery 1 as a cuboid as an example.

[0021] It should be noted that, in this embodiment, the melting point of the first insulating support block 133 is much higher than that of the plastic support 14, and the melting point of the first insulating support block 133 is higher than the temperature at which the battery cell experiences thermal failure. Therefore, the first insulating support block 133 will not melt during battery cell thermal failure. The first insulating support block 133 may be made of materials such as ceramics.

[0022] The bottom wall of the first groove 1421 is in contact with the top surface of the battery cell assembly 12.

[0023] In this embodiment, when the plastic support 14 melts, the first insulating support blocks 133 on both sides of the second surface 132 of the top cover 13 can abut against the top surface of the cell assembly 12, so that a certain space is maintained between the top cover 13 and the top surface of the cell assembly 12, limiting the cell assembly 12 from continuously moving upward to fit against the top cover 13, and avoiding further impact on the safety of the battery 1. By providing the first grooves 1421 on both sides of the plastic support 14 for accommodating the first insulating support blocks 133, the positioning effect of the relative position between the top cover 13 and the plastic support 14 can be enhanced, and the distance between the first insulating support blocks 133 and the top surface of the cell assembly 12 can be reduced, thus reducing the time that the first insulating support blocks 133 abut against the top surface of the cell assembly 12 when the plastic support 14 melts.

[0024] Please refer to the following: Figure 2 , Figure 3and Figure 4 In some embodiments, the first insulating support block 133 is configured to protrude from the first surface 131 toward the second surface 132. The first insulating block is integrally formed with the top cover 13, and the first insulating support block 133 is formed by the first surface 131 of the top cover 13 being recessed towards the second surface 132 and the second surface 132 being protruding away from the first surface 131.

[0025] In some embodiments, the first insulating support block 133 abuts against the bottom wall of the first groove 1421.

[0026] In this embodiment, the first insulating support block 133 abuts against the bottom wall of the first groove 1421, and the bottom wall of the first groove 1421 contacts the top surface of the cell assembly 12. When the cell assembly 12 fails thermally, after the bottom wall of the first groove 1421 melts, the first insulating support block 133 can immediately abut against the top surface of the cell assembly 12, so that the cell assembly 12 only moves slightly upward, avoiding further impact on the safety of the battery 1.

[0027] Please see Figure 4 In some embodiments, there are four first insulating support blocks 133 and four first grooves 1421. The four first insulating support blocks 133 are respectively disposed at the four corners of the second surface 132, and the four first insulating support blocks 133 are housed in the four first grooves 1421 in a one-to-one correspondence.

[0028] Four first insulating support blocks 133 are respectively set at the four corners of the second surface 132, which can ensure that the battery cell assembly 12 does not tilt as much as possible.

[0029] Please see Figure 5 It should be noted that in this embodiment, the plastic support 14 is provided with exhaust holes 21 on both sides. The exhaust holes 21 are used to guide the gas flow from both sides to the pressure relief valve in the middle position. The two first grooves 1421 on the same side are respectively provided on both sides of the exhaust holes 21.

[0030] Please see Figure 5 In some embodiments, the plastic support member 14 includes a first boss 141, two second bosses 142, and two plates 143. The two second bosses 142 are respectively spaced apart on both sides of the first boss 141, and each of the two second bosses 142 is provided with a first groove 1421. One plate 143 is connected between the first boss 141 and one of the second bosses 142, and the other plate 143 is connected between the first boss 141 and the other second boss 142.

[0031] In this embodiment, both second protrusions 142 abut against the top surface of the cell assembly 12. Both second protrusions 142 are provided with first grooves 1421. When the plastic support 14 melts, the second protrusions 142 abut against the surface of the cell assembly 12 melt first, causing the bottom wall of the first groove 1421 to melt. The first insulating support block 133, which is housed in the first groove 1421, abuts against the top surface of the cell, so that a certain space is maintained between the top cover 13 and the top surface of the cell assembly 12, restricting the cell assembly 12 from continuously moving upward to fit against the top cover 13.

[0032] Please refer to the following: Figure 4 and Figure 5 In some embodiments, the second surface 132 is further provided with a second insulating support block 134, which is located between the first insulating support blocks 133 on both sides. The first boss 141 is provided with a second groove 1411, and the second insulating support block 134 is accommodated in the second groove 1411. In this embodiment, the melting point of the second insulating support block 134 is much higher than that of the plastic support 14, and the melting point of the second insulating support block 134 is higher than the temperature at which the battery cell experiences thermal failure. Therefore, the second insulating support block 134 will not melt during battery cell thermal failure. The second insulating support block 134 can be made of materials such as ceramic, and its material and manufacturing process can be the same as or different from those of the first insulating support block 133; no limitation is made here.

[0033] It should be noted that if the top surface of the battery cell assembly 12 is a flat surface, the surface of the second insulating support block 134 facing the battery cell assembly 12 can be flush with the surface of the first insulating support block 133 facing the battery cell assembly 12. If the top surface of the battery cell assembly 12 is an irregular surface, the surface of the second insulating support block 134 facing the battery cell assembly 12 and the surface of the first insulating support block 133 facing the battery cell assembly 12 can also be not flush with each other in order to match the top surface of the battery cell assembly 12. No limitation is made here.

[0034] By adding a second insulating support block 134 to the second surface 132, the support effect on the battery cell can be further enhanced, preventing the battery cell from continuously moving upward.

[0035] Please refer to the following: Figure 3 and Figure 4 In some embodiments, the second insulating support block 134 is configured to protrude from the first surface 131 toward the second surface 132. The second insulating block is integrally formed with the top cover 13, and the second insulating support block 134 is formed by the first surface 131 of the top cover 13 being recessed towards the second surface 132, and the second surface 132 being protruding in a direction away from the first surface 131.

[0036] In some embodiments, the second insulating support block 134 abuts against the bottom wall of the second groove 1411. In this embodiment, the second insulating support block 134 abuts against the bottom wall of the second groove 1411, and the bottom wall of the second groove 1411 contacts the top surface of the cell assembly 12. When the cell assembly 12 fails thermally, after the bottom wall of the second groove 1411 melts, the second insulating support block 134 can immediately abut against the top surface of the cell assembly 12, so that the cell assembly 12 only moves slightly upward, avoiding further impact on the safety of the battery 1.

[0037] Please refer to the following: Figure 4 and Figure 5 In some embodiments, the number of second insulating support blocks 134 is at least two, the number of second grooves 1411 is at least two, and the number of second grooves 1411 is the same as the number of second insulating support blocks 134. At least two second insulating support blocks 134 are disposed in at least two second grooves 1411 in a one-to-one correspondence.

[0038] The number of second insulating support blocks 134 is at least two, which can balance the battery cell assembly 12 and ensure that the battery cell assembly 12 does not tilt.

[0039] Please continue reading. Figure 4 and Figure 5 In some embodiments, there are four second insulating support blocks 134, and four second grooves 1411 are provided at the four corners of the first boss 141.

[0040] It should be noted that in this embodiment, the first boss 141 may be provided with an exhaust chamber 22, the exhaust chamber 22 penetrates the first surface 131, and the bottom wall of the exhaust chamber 22 is provided with a through vent 23. Some of the gas generated at the top of the battery cell can flow through the vent 23 to the exhaust chamber 22, and then flow from the exhaust chamber 22 to the pressure relief valve, and finally be discharged from the pressure relief valve.

[0041] The four second grooves 1411 can be set at the four corners of the exhaust chamber 22 to avoid the vent 23.

[0042] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that, include: A housing having a receiving cavity; A battery cell assembly, wherein the battery cell assembly is disposed within the receiving cavity; A top cover is disposed on the top of the housing and closes the receiving cavity. The top cover has a first surface and a second surface facing away from each other. The second surface faces the battery cell assembly. First insulating support blocks are disposed on both sides of the second surface. as well as A plastic support component is connected to the second surface of the top cover and disposed between the top cover and the battery cell assembly. A first groove is provided on both sides of the plastic support component, and the first insulating support block is accommodated in the first groove.

2. The battery according to claim 1, characterized in that, The first insulating support block is configured to protrude from the first surface toward the second surface.

3. The battery according to claim 1, characterized in that, The first insulating support block abuts against the bottom wall of the first groove.

4. The battery according to claim 1, characterized in that, There are four of each of the first insulating support blocks and the first grooves. The four first insulating support blocks are respectively disposed at the four corners of the second surface, and the four first insulating support blocks are respectively housed in the four first grooves.

5. The battery according to any one of claims 1-4, characterized in that, The plastic support component includes: First protrusion; Two second protrusions are respectively disposed on both sides of the first protrusion at a distance, and each of the two second protrusions is provided with the first groove; and Two plates, one of which is connected between the first boss and one of the second bosses, and the other plate is connected between the first boss and the other of the second bosses.

6. The battery according to claim 5, characterized in that, The second surface is further provided with a second insulating support block, which is located between the first insulating support blocks on both sides; the first boss is provided with a second groove, and the second insulating support block is accommodated in the second groove.

7. The battery according to claim 6, characterized in that, The second insulating support block is configured to protrude from the first surface toward the second surface.

8. The battery according to claim 6, characterized in that, The second insulating support block abuts against the bottom wall of the second groove.

9. The battery according to claim 6, characterized in that, The number of the second insulating support blocks is at least two, the number of the second grooves is at least two, and the number of the second grooves is the same as the number of the second insulating support blocks. At least two second insulating support blocks are arranged in at least two second grooves in a one-to-one correspondence.

10. The battery according to claim 9, characterized in that, The number of the second insulating support blocks is four, and the four second grooves are disposed at the four corners of the first boss.

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