Energy storage battery device

Abstract

This utility model discloses an energy storage battery device, belonging to the field of battery technology. In this energy storage battery device, a limiting member abuts against the first surface of the battery pack where the terminals are located, enhancing the safety performance of the first surface. Simultaneously, the limiting member is spaced apart from both the positive and negative terminals, thus preventing short circuits and improving the reliability and safety of the battery pack. The limiting member has a semi-hole for fasteners to pass through, facilitating the fastener's secure connection between the limiting member and the support member, ensuring the connection stability between the limiting member and the support member, and not affecting the structural strength of the limiting member. This prevents bending or even breakage of the limiting member, thereby improving the installation stability of the battery pack and preventing loosening, further enhancing its reliability and safety.

Description

Technical Field

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

[0002] In related technologies, energy storage battery devices include a support frame and multiple battery packs placed on the support frame. To improve the stability of the battery packs, baffles are usually installed on the support frame, with the battery packs resting against the baffles. However, when the baffle is located on the side where the battery pack terminals are located, the limited surface space of the terminals makes it easy for the baffle to come into contact with the terminals, causing a short circuit. To allow the baffle to avoid the terminals, the baffle width may be too small, making it difficult to achieve a stable connection with the support frame. This can lead to the baffle becoming loose, bending, or even breaking, thus affecting the installation stability of the battery pack and increasing safety hazards. Utility Model Content

[0003] The purpose of this invention is to provide an energy storage battery device that can improve the installation stability of the battery pack, thereby improving the reliability and safety of the battery pack.

[0004] To achieve the above objectives, the following technical solution is provided:

[0005] An energy storage battery device includes a battery pack, a limiting member, and a support member. The battery pack is fixed to the support member. The battery pack includes a positive terminal and a negative terminal spaced apart along a first direction. The positive terminal and the negative terminal are both disposed on a first surface of the battery pack. The limiting member abuts against the first surface and is disposed between the positive terminal and the negative terminal, and is spaced apart from both the positive terminal and the negative terminal. The limiting member and the support member are fixedly connected by fasteners. The limiting member has a half-hole, and the fastener passes through the half-hole.

[0006] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0007] The energy storage battery device of this utility model has a limiting member abutting against the first surface of the battery pack where the terminals are located, which can enhance the safety performance of the first surface. At the same time, the limiting member is spaced apart from both the positive and negative terminals, thereby avoiding short circuit problems and improving the reliability and safety of the battery pack. The limiting member is provided with a semi-hole for fasteners to pass through, which not only facilitates the fastener to fix the limiting member and the support member, but also ensures the connection stability between the limiting member and the support member, and does not affect the structural strength of the limiting member. It can prevent problems such as bending or even breakage of the limiting member, thereby improving the installation stability of the battery pack and preventing the battery pack from loosening, which is conducive to further improving the reliability and safety of the battery pack. Attached Figure Description

[0008] Figure 1 This is a partial structural schematic diagram of the energy storage battery device in an embodiment of this utility model;

[0009] Figure 2 This is a schematic diagram of the limiting component in an embodiment of the present utility model.

[0010] Figure label:

[0011] 1. Battery pack; 11. Positive terminal; 12. Negative terminal; 13. First surface; 14. Battery cell; 15. End plate; 16. Connector; 2. Limiting component; 21. Half hole; 22. Protrusion; 3. Support component; 31. Support part; 4. Fastener. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] like Figure 1 and Figure 2 As shown, this embodiment provides an energy storage battery device, including a battery pack 1, a limiting member 2, and a supporting member 3. The battery pack 1 is fixed to the supporting member 3. The battery pack 1 includes a positive terminal post 11 and a negative terminal post 12 spaced apart along a first direction. The positive terminal post 11 and the negative terminal post 12 are both disposed on the first surface 13 of the battery pack 1. The limiting member 2 abuts against the first surface 13 and is disposed between the positive terminal post 11 and the negative terminal post 12. The limiting member 2 is spaced apart from both the positive terminal post 11 and the negative terminal post 12. The limiting member 2 and the supporting member 3 are fixedly connected by a fastener 4. The limiting member 2 has a half hole 21, and the fastener 4 passes through the half hole 21.

[0020] Specifically, multiple battery cells 14 with equal capacity and internal resistance are connected in series or in parallel to form a battery pack 1.

[0021] In this embodiment of the energy storage battery device, the limiting member 2 abuts against the first surface 13 of the battery pack 1 where the terminal post is located, which can enhance the safety performance of the first surface 13. At the same time, the limiting member 2 is spaced apart from the positive terminal post 11 and the negative terminal post 12, which can avoid short circuit problems and improve the reliability and safety of the battery pack 1. The limiting member 2 is provided with a half hole 21 for the fastener 4 to pass through, which not only facilitates the fastener 4 to fix the limiting member 2 and the support member 3, but also ensures the connection stability between the limiting member 2 and the support member 3, and does not affect the structural strength of the limiting member 2. It can avoid problems such as bending or even breaking of the limiting member 2, thereby improving the installation stability of the battery pack 1 and preventing the battery pack 1 from becoming loose, which is conducive to further improving the reliability and safety of the battery pack 1.

[0022] It should be noted that there are two support members 3, which are spaced apart along the second direction. The two ends of the limiting member 2 along the second direction are fixedly connected to the two support members 3 by fasteners 4. The second direction is perpendicular to the first direction. That is to say, each end of the limiting member 2 along the second direction is provided with a half hole 21, and the fastener 4 is provided with a one-to-one correspondence with the half hole 21.

[0023] For example, fastener 4 is a bolt, the head of which abuts against the limiting member 2, and the shank of the bolt passes through the half-hole 21 and is threaded or welded to the support member 3. Of course, fastener 4 can also be a rivet.

[0024] For example, the limiting member 2 is a baffle, which can not only increase the contact area between the limiting member 2 and the first surface 13 of the battery pack 1, but also help to reduce the weight of the limiting member 2.

[0025] Optionally, the semi-circular hole 21 is easier to process and helps improve the uniformity of force distribution on the limiting member 2, reducing the risk of deformation or other problems. Of course, in other embodiments, the semi-circular hole 21 can also be set to other shapes, such as a semi-ellipse. That is to say, this embodiment does not limit the shape of the semi-circular hole 21.

[0026] Optionally, two half-holes 21 and two fasteners 4 are provided, with the two fasteners 4 corresponding to each other and passing through the two half-holes 21, which can improve the connection stability between the limiting member 2 and the support member 3, and help improve the installation stability of the battery pack 1.

[0027] Optionally, the limiting member 2 is also provided with a protrusion 22, and two half holes 21 are respectively located on both sides of the protrusion 22 along the first direction, which can increase the structural strength of the limiting member 2 and further avoid problems such as bending and deformation of the limiting member 2.

[0028] Specifically, the protrusion 22 is located on the side of the limiting member 2 away from the battery pack 1. Furthermore, the protrusion 22 is located in the middle of the limiting member 2 along the first direction, which can improve the structural strength of the limiting member 2 and ensure that the contact area between the limiting member 2 and the battery pack 1 is large enough, which is beneficial to improving the installation stability of the battery pack 1.

[0029] Optionally, the limiting member 2 has a first flange on the side facing the positive terminal 11, which reduces the risk of damage to the positive terminal 11 due to collision between the limiting member 2 and the positive terminal 11 during installation. Simultaneously, the first flange further enhances the structural strength of the limiting member 2, preventing bending and deformation.

[0030] Optionally, the limiting member 2 has a second flange on the side facing the negative terminal 12, which reduces the risk of damage to the positive terminal 11 caused by the limiting member 2 colliding with the negative terminal 12 during installation. At the same time, the second flange further improves the structural strength of the limiting member 2, preventing bending and deformation.

[0031] Optionally, the limiting member 2 includes a mounting portion and a limiting portion connected to the mounting portion. The limiting portion abuts against the first surface 13, and a semi-hole 21 is provided in the mounting portion. Furthermore, along the first direction, the width of the mounting portion is greater than the width of the limiting portion. This not only provides more space for the setting of the semi-hole 21, which is beneficial to improving the convenience of fastener 4 installation, but also improves the connection stability and reliability between the limiting member 2 and the support member 3 by increasing the inner diameter of the semi-hole 21. It also helps to improve the structural strength of the limiting member 2 and avoid problems such as bending and deformation of the limiting member 2.

[0032] Specifically, the mounting part does not contact the battery pack 1, thus preventing interference between them. In other words, the width of the mounting part along the first direction is not affected by the battery pack 1, allowing for an increase in the width of the mounting part along the first direction to improve the structural strength of the limiting member 2. It should be noted that since the semi-hole 21 is located in the mounting part, increasing the width of the mounting part along the first direction also facilitates the arrangement of the semi-hole 21, providing more space for the semi-hole 21 and the fastener 4, which improves the connection convenience between the limiting member 2 and the support member 3.

[0033] Optionally, the distance m1 between the limiting member 2 and the positive terminal 11 along the first direction is greater than or equal to 14.2 mm. If the distance between the limiting member 2 and the positive terminal 11 along the first direction is too small, the risk of short circuit will easily increase. By limiting the distance m1 between the limiting member 2 and the positive terminal 11 along the first direction to be greater than or equal to 14.2 mm, the insulation and reliability of the limiting member 2 can be improved.

[0034] Optionally, the distance m2 between the limiting member 2 and the negative terminal 12 along the first direction is greater than or equal to 14.2 mm. If the distance between the limiting member 2 and the negative terminal 12 is too small along the first direction, the risk of short circuit will easily increase. By limiting the distance m2 between the limiting member 2 and the negative terminal 12 along the first direction to be greater than or equal to 14.2 mm, the insulation and reliability of the limiting member 2 can be improved.

[0035] Optionally, the distance n between the protrusion 22 and the half-hole 21 along the first direction ranges from 3.5mm to 4mm. If the distance between the protrusion 22 and the half-hole 21 along the first direction is too small, the installation space for the fastener 4 will be too small, making it inconvenient to install the fastener 4. If the distance between the protrusion 22 and the half-hole 21 along the first direction is too large, the structural strength of the limiting member 2 will be insufficient. By limiting the distance n between the protrusion 22 and the half-hole 21 along the first direction to a range of 3.5mm to 4mm, it is not only convenient to install the fastener 4 and improve the stability of the fastener 4 installation, but also beneficial to improving the structural strength of the limiting member 2.

[0036] For example, along the first direction, the distance n between the protrusion 22 and the half-hole 21 can be any value between 3.5mm and 4mm. For instance, along the first direction, the distance n between the protrusion 22 and the half-hole 21 can be 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, or 4mm.

[0037] Optionally, the inner diameter of the semi-hole 21 is 'a'; the width of the limiting member 2 along the first direction is 'b', and the value of a / b ranges from 1 / 5.3 to 1 / 5.5. If the value of a / b is too small, it indicates that the inner diameter of the semi-hole 21 is too small, and therefore only small-sized fasteners 4 can be used to fix the limiting member 2 and the support member 3, which can easily lead to a decrease in the reliability of the connection between the limiting member 2 and the support member 3, and the limiting member 2 may loosen or even fall off. If the value of a / b is too small, it indicates that the inner diameter of the semi-hole 21 is too large, that is, the semi-hole 21 occupies a large space in the limiting member 2, which can lead to a decrease in the structural strength of the limiting member 2, and the limiting member 2 is prone to bending and deformation. By limiting the value of a / b to 1 / 5.3 to 1 / 5.5, the connection reliability between the limiting member 2 and the support member 3 and the structural strength of the limiting member 2 can be balanced.

[0038] For example, a / b can be any value between 1 / 5.3 and 1 / 5.5. For instance, a / b can be 1 / 5.3, 1 / 5.4, or 1 / 5.5.

[0039] Optionally, the energy storage battery device also includes two support parts 31, which abut against the two sides of the battery pack 1 along the first direction, and the limiting member 2 is located between the two support parts 31, thereby enabling the battery pack 1 to be quickly and securely installed on the support member 3, which is beneficial to improving the reliability and safety of the battery pack 1.

[0040] Specifically, each support member 3 is provided with two support parts 31, which can fix the two ends of the battery pack 1 along the second direction to improve the installation stability of the battery pack 1.

[0041] Optionally, the support part 31 is a support plate, which is installed on the support member 3 by welding or fasteners such as bolts. Specifically, the contact area between the support plate and the battery pack 1 is large enough to provide stable support for the battery pack 1.

[0042] Optionally, the support plate is provided with reinforcing ribs, which can improve the structural strength of the support plate to provide stable support for the battery pack 1. Optionally, the cross-section of the support plate is Z-shaped, which not only improves the structural strength of the support plate, but also facilitates processing and ensures that the contact area between the support plate and the battery pack 1 is large enough.

[0043] Optionally, the battery pack 1 includes multiple battery cells 14, two end plates 15, and a connector 16. The multiple battery cells 14 are stacked along a second direction; the first direction is perpendicular to the second direction; along the second direction, the two end plates 15 are respectively disposed at both ends of the multiple battery cells 14; the connector 16 binds the two end plates 15 to the multiple battery cells 14 as a whole. With this configuration, the multiple battery cells 14 can be surrounded by the limiting member 2 and the two end plates 15, which not only allows the multiple battery cells 14 to be stacked neatly, but also protects the multiple battery cells 14, improving the reliability and safety of the multiple battery cells 14.

[0044] In this embodiment, the first direction is the vertical direction, that is, multiple battery cells 14 are stacked in the horizontal direction. Compared with the method of stacking multiple battery cells in the vertical direction, it can avoid problems such as damage to the battery cells 14 due to compression.

[0045] Optionally, for ease of description, the support portion 31 located below the battery pack 1 is referred to as the lower support portion, and the support portion 31 located above the battery pack 1 is referred to as the upper support portion. The contact area between the lower support portion and the battery pack 1 is larger than the contact area between the upper support portion and the battery pack 1, thereby improving the support stability of the support member 3 on the battery pack 1.

[0046] Specifically, the lower support and the support member 3 are fixedly connected by welding or other methods. The upper support and the support member 3 are detachably connected by bolts or other fasteners. Therefore, when installing the battery pack 1, the battery pack 1 can be placed on the lower support first, and then the upper support can be installed on the support member 3, with the upper support abutting against the top of the battery pack 1, thus preventing scratches or other problems from occurring on the battery pack 1.

[0047] Optionally, the two support portions 31 are located on both sides of the end plate 15 along the first direction, and the support portions 31 do not contact the battery cell 14. Specifically, the support portions 31 abut against the end plate 15. This ensures that the support portions 31 will not cause damage to the battery cell 14, thus protecting the battery cell 14.

[0048] Optionally, the connector 16 is located at the middle of the plurality of battery cells 14 along a third direction; the first direction and the second direction are perpendicular to the third direction. On the one hand, the connector 16 can provide a uniform preload to the plurality of battery cells 14, so that the plurality of battery cells 14 are subjected to more uniform force, avoiding problems such as excessive local force on the battery cells 14 and deformation, which is beneficial to improving the safety and reliability of the plurality of battery cells 14; on the other hand, it can make the plurality of battery cells 14 stacked more tightly, which is beneficial to improving the installation stability of the battery pack 1.

[0049] Optionally, the connector 16 is a cable tie, which has a ring structure and is fitted around the outside of the two end plates 15 and the multiple battery cells 14. Specifically, the cable tie is joined end to end in a third direction to form a ring structure.

[0050] Optionally, the cable tie is made of metal, which improves its structural strength, ensuring its reliability and enabling it to provide sufficient preload to multiple battery cells 14. Optionally, the surface of the cable tie in contact with the battery pack 1 is provided with a first insulating layer, thereby improving the cable tie's insulation and reducing the risk of short circuits in the battery pack 1. Alternatively, all outer surfaces of the cable tie can be provided with a first insulating layer to further improve its insulation.

[0051] In other embodiments, the connector 16 can be configured as follows: two connectors 16 are provided, each located on one side of the plurality of battery cells 14 along the first direction. The two ends of the connector 16 along the second direction are fixedly connected to two end plates 15, and the connector 16 does not contact the support portion 31. This avoids the connector 16 being sandwiched between the end plate 15 and the support portion 31, thereby increasing the contact area between the battery pack 1 and the support portion 31 and improving the installation stability of the battery pack 1. For example, the end plate 15 is a metal plate, and the connector 16 is a metal strip. The two ends of the metal strip are fixedly connected to the two end plates 15 by welding or bolts or other fasteners, ensuring that the connector 16 can provide a sufficiently large preload to the plurality of battery cells 14 and ensuring the reliability of the connection between the metal strip and the end plate 15.

[0052] Optionally, a second insulating layer is provided on the surface of the metal plate that contacts the battery pack 1, thereby improving the insulation of the metal plate and reducing the risk of short circuits in the battery pack 1. Alternatively, a second insulating layer can be provided on all outer surfaces of the metal plate to further improve its insulation.

[0053] Optionally, a third insulating layer is provided on the surface of the metal strip that contacts the battery pack 1, thereby improving the insulation of the metal strip and reducing the risk of short circuits in the battery pack 1. Of course, a third insulating layer can also be provided on all outer surfaces of the metal strip to further improve its insulation.

[0054] Optionally, the surface of the limiting member 2 that contacts the battery pack 1 is provided with a fourth insulating layer, which can improve the insulation of the limiting member 2 and reduce the risk of short circuit in the battery pack 1.

[0055] For example, the installation method of the energy storage battery device in this embodiment is as follows:

[0056] Multiple battery cells 14 are stacked along the second direction. Two end plates 15 are placed at both ends of the multiple battery cells 14 along the second direction and clamped between the two end plates 15. Then, cable ties are wrapped around the outside of the two end plates 15 and the multiple battery cells 14 to tie and fix the two end plates 15 and the multiple battery cells 14 together to form an integral battery pack 1.

[0057] The battery pack 1 is placed on the lower support, and the upper support is installed on the support 3 with bolts or other fasteners, so that the upper support abuts against the top of the battery pack 1.

[0058] The limiting member 2 is fixedly connected to the support member 3 by fastener 4, and the limiting member 2 is located between the positive terminal 11 and the negative terminal 12, and the limiting member 2 abuts against the first surface 13 of the battery pack 1.

[0059] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An energy storage battery device, characterized by, The device includes a battery pack (1), a limiting member (2), and a support member (3). The battery pack (1) is fixed to the support member (3). The battery pack (1) includes a positive terminal (11) and a negative terminal (12) spaced apart along a first direction. The positive terminal (11) and the negative terminal (12) are both located on the first surface (13) of the battery pack (1). The limiting member (2) abuts against the first surface (13). The limiting member (2) is located between the positive terminal (11) and the negative terminal (12), and the limiting member (2) is spaced apart from both the positive terminal (11) and the negative terminal (12). The limiting member (2) is fixedly connected to the support member (3) by a fastener (4). The limiting member (2) has a half hole (21), and the fastener (4) passes through the half hole (21).

2. The energy storage battery device of claim 1, wherein, Both the half-hole (21) and the fastener (4) are provided in twos, and the two fasteners (4) are inserted into the two half-holes (21) in a one-to-one correspondence; The limiting member (2) is also provided with a protrusion (22), and the two half holes (21) are respectively located on both sides of the protrusion (22) along the first direction.

3. The energy storage battery device of claim 1, wherein, The limiting member (2) has a first flange on the side facing the positive electrode post (11); And / or, the limiting member (2) has a second flange on the side facing the negative electrode post (12).

4. The energy storage battery device of claim 1, wherein, The limiting member (2) includes a mounting part and a limiting part connected to the mounting part. The limiting part abuts against the first surface (13), and the semi-hole (21) is provided in the mounting part. Along the first direction, the width of the mounting portion is greater than the width of the limiting portion.

5. The energy storage battery device of claim 1, wherein, Along the first direction, the distance m1 between the limiting member (2) and the positive electrode post (11) is greater than or equal to 14.2 mm; Along the first direction, the distance m2 between the limiting member (2) and the negative electrode post (12) is greater than or equal to 14.2 mm.

6. The energy storage cell device of claim 2, wherein, Along the first direction, the distance n between the protrusion (22) and the half hole (21) ranges from 3.5 mm to 4 mm.

7. The energy storage battery device according to claim 1, characterized in that, The inner diameter of the semi-hole (21) is a; the width of the limiting member (2) along the first direction is b, and the value of a / b ranges from 1 / 5.3 to 1 / 5.

5.

8. The energy storage cell device of any one of claims 1-7, wherein, The support member (3) includes two support portions (31), which abut against the battery pack (1) on both sides along the first direction, and the limiting member (2) is located between the two support portions (31).

9. The energy storage cell device of claim 8, wherein, The battery pack (1) includes: Multiple battery cells (14) are stacked along a second direction; the first direction is perpendicular to the second direction. Two end plates (15) are respectively disposed at both ends of the plurality of battery cells (14) along the second direction; A connector (16) binds the two end plates (15) to the plurality of battery cells (14) into one unit.

10. The energy storage cell device of claim 9, wherein, The two support portions (31) are located on both sides of the end plate (15) along the first direction, and the support portions (31) are not in contact with the battery cell (14).

11. The energy storage battery device of claim 9, wherein, The connector (16) is located at the middle of the plurality of battery cells (14) along a third direction; the first direction and the second direction are perpendicular to the third direction.

12. The energy storage battery device of claim 9, wherein, Two connectors (16) are provided, and the two connectors (16) are respectively located on both sides of the plurality of battery cells (14) along the first direction. The two ends of the connectors (16) along the second direction are respectively fixedly connected to the two end plates (15), and the connectors (16) do not contact the support (31).

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