Battery shell and battery
By employing a combination structure of sealing plate, sealing ring and waterproof strip in the battery casing, the problem that traditional integral potting process cannot meet the requirements of lightweight and waterproof performance is solved, thus achieving improved waterproof performance and lightweight design of the battery casing.
Patent Information
- Application Number
- CN202422398041.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Traditional integral potting processes cannot meet the lightweight design requirements of shared two-wheeled vehicle batteries, nor can they provide IPX8 waterproof performance throughout the entire life cycle.
The battery casing is sealed by a combination of a sealing plate, a sealing ring, and a waterproof strip. The sealing plate is sealed to the cavity wall, and the design of the potting part and the surrounding ring are combined to achieve a sealed battery casing, enhance waterproofness, and maintain a lightweight design.
The waterproof performance of the battery casing has been improved to meet the IPX8 standard, while the weight of the battery has been reduced, thus improving the waterproof reliability of the battery.
Smart Images
Figure CN223514109U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery equipment technology, and in particular relates to a battery casing and a battery. Background Technology
[0002] Globally, shared two-wheelers (electric bicycles and electric scooters) have brought convenience to people's short-distance travel. Unlike private vehicles, shared two-wheelers can be borrowed and returned at any time. The varying usage locations and uncertain parking spots place higher demands on the waterproofing of these vehicles, especially the battery, requiring IPX8 waterproofing throughout its entire lifecycle. Due to the lightweight design requirements of shared two-wheelers, traditional integral potting processes are insufficient. Utility Model Content
[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a battery that meets waterproof requirements and features a lightweight design.
[0004] The objective of this utility model can be achieved through the following technical solution: a battery casing,
[0005] include:
[0006] A housing, wherein a receiving cavity with an opening at one end is provided inside the housing;
[0007] A top cover, which is connected to the housing to close the opening on the housing, and the top cover and the housing are sealed together.
[0008] A sealing part is located inside the receiving cavity, and the sealing part is sealed to the cavity wall.
[0009] In one of the battery casings described above, the sealing part includes a sealing plate, and the outer peripheral surface of the sealing plate is sealed to the cavity wall to achieve the closure of the receiving cavity.
[0010] In one of the battery casings described above, a sealing ring is provided on the outer peripheral surface of the sealing plate, and the sealing ring is clamped and fixed between the sealing plate and the cavity wall; or the sealing plate is filled with an adhesive filling portion, and the adhesive filling portion abuts against the cavity wall of the receiving cavity.
[0011] In one of the battery casings described above, a sealing ring is provided on the outer peripheral surface of the sealing plate. The sealing ring is clamped and fixed between the sealing plate and the cavity wall. Furthermore, an adhesive filling portion is filled on the sealing plate, and the adhesive filling portion abuts against the cavity wall of the receiving cavity.
[0012] In one of the battery casings described above, a surrounding ring is integrally provided on the sealing ring. When the sealing ring is clamped and fixed between the cavity wall and the sealing plate, the surrounding ring covers the upper surface of the sealing plate.
[0013] In one of the battery cases described above, a waterproof strip is provided between the top cover and the housing.
[0014] In one of the battery cases described above, a wrapping strip is integrally provided on the waterproof strip. When the top cover is connected to the housing, the inner wall of the top cover protrudes from the inner wall of the housing. The waterproof strip is clamped and fixed between the top cover and the housing, and the wrapping strip wraps the protruding end of the top cover.
[0015] In one of the battery cases described above, the top cover has an opening end with a clamping groove and a connecting part. When the top cover is connected to the housing, a first clamping cavity is formed between the clamping groove and the outer wall of the housing, and a second clamping cavity is formed between the connecting part and the inner wall of the housing. The waterproof strip is clamped and fixed in the first clamping cavity and the second clamping cavity.
[0016] In one of the battery casings described above, a connecting seat is provided on the sealing plate, and a connecting post is provided on the top cover. The connecting seat is connected to the connecting post to fix the sealing plate and the top cover.
[0017] A battery comprising the aforementioned battery casing.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: a sealing part is added inside the shell to seal the cavity inside the shell, which increases the waterproofness of the battery inside the cavity. Moreover, compared with the traditional overall potting process, the setting of the sealing part allows the battery to meet the waterproof requirements while also being lightweight. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0020] Figure 2 This is a schematic diagram of the sealing plate installation inside the housing;
[0021] Figure 3 This is one of the partial cross-sectional structural schematic diagrams of this utility model;
[0022] Figure 4 This is the second partial cross-sectional structural diagram of this utility model after the waterproof strip has been removed;
[0023] Figure 5 This is a three-dimensional structural diagram of the sealing ring in this utility model;
[0024] Figure 6 This is a three-dimensional structural diagram of the waterproof strip in this utility model;
[0025] Figure 7This is a three-dimensional structural diagram of the battery holder in this utility model;
[0026] Figure 8 This is a cross-sectional structural diagram of the present invention.
[0027] In the figure, the housing is 100; the top cover is 101; the sealing part is 102; the sealing plate is 103; the sealing ring is 104; the surrounding ring is 105; the abutment ring is 106; the waterproof strip is 107; the wrapping strip is 108; the first clamping cavity is 109; the second clamping cavity is 110; the battery bracket is 111; the first bracket is 112; the second bracket is 113; the battery cavity is 114; the connecting seat is 115; the connecting post is 116; the connecting hole is 117; the cable harness cavity is 118; the receiving cavity is 119; and the connecting part is 120. Detailed Implementation
[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0030] like Figures 1-8 As shown, a battery casing includes:
[0031] The housing 100 has a receiving cavity 119 with an opening at one end.
[0032] Top cover 101 is connected to housing 100 to close the opening on housing 100, and the top cover 101 and housing 100 are sealed together.
[0033] The sealing part 102 is located inside the receiving cavity 119, and the sealing part 102 is sealed to the cavity wall of the receiving cavity 119.
[0034] In this embodiment, a sealing part 102 is added inside the housing 100 to seal the receiving cavity 119 inside the housing 100, thereby increasing the waterproofness of the battery inside the receiving cavity 119. Compared with the traditional overall potting process, the setting of the sealing part 102 enables the battery to meet the waterproof requirements while also being lightweight.
[0035] Preferably, the sealing part 102 includes a sealing plate 103, and the outer peripheral surface of the sealing plate 103 is sealed to the cavity wall.
[0036] Specifically, as an alternative, a sealing ring 104 is provided on the outer peripheral surface of the sealing plate 103, and the sealing ring 104 is clamped and fixed between the sealing plate 103 and the cavity wall; as another alternative, a glue-filling part is filled on the sealing plate 103, which is formed by filling the sealing plate 103 with sealant and then hardening it, and only a thin layer of glue needs to be poured on the sealing plate 103; compared with the overall glue-filling process, the above two solutions meet the requirements of lightweighting.
[0037] Based on the two optional solutions mentioned above, as a preferred solution, a sealing ring 104 is provided on the outer peripheral surface of the sealing plate 103. The sealing ring 104 is clamped and fixed between the sealing plate 103 and the cavity wall, and an adhesive filling part is also filled on the sealing plate 103, which abuts against the cavity wall of the receiving cavity 119.
[0038] Specifically, a surrounding ring 105 is integrally provided on the sealing ring 104. When the sealing ring 104 is clamped and fixed between the cavity wall and the sealing plate 103, the surrounding ring 105 covers the upper surface of the sealing plate 103.
[0039] It is worth mentioning that the sealing ring 104 is integrally provided with an abutment ring 106. The surrounding ring 105, the sealing ring 104 and the abutment ring 106 cooperate with each other to form a "C"-shaped structure, which realizes the wrapping of the outer peripheral surface of the sealing plate 103, thus facilitating the installation of the sealing plate 103.
[0040] In this embodiment, to ensure the sealing and waterproofing effect of the sealing ring 104, a surrounding ring 105 is provided on the sealing ring 104 to increase the contact area with the sealing plate 103 and thus enhance the sealing effect. Simultaneously, in the above preferred embodiment, when the adhesive is applied for sealing, the adhesive comes into contact with the sealing ring 104. After the applied adhesive hardens, it cooperates with the sealing ring 104 to achieve a better waterproofing effect. Furthermore, due to the elastic buffering provided by the sealing ring 104, the risk of leakage caused by microcracks at the contact surface due to the difference in temperature expansion coefficients between the adhesive and the housing 100 is effectively reduced.
[0041] It should be noted that the glue-dispensing section should be designed to submerge the surrounding ring 105.
[0042] More preferably, a waterproof strip 107 is clamped between the top cover 101 and the housing 100; that is, in this application, the cooperation between the sealing ring 104 and the glue-filling part achieves a primary seal, while the setting of the waterproof strip 107 between the top cover 101 and the housing 100 achieves a secondary seal; the two seals work together to increase the waterproof effect.
[0043] More preferably, a wrapping strip 108 is integrally provided on the waterproof strip 107. When the top cover 101 is connected to the housing 100, the inner wall of the top cover 101 protrudes from the inner wall of the housing 100. The waterproof strip 107 is clamped and fixed between the top cover 101 and the housing 100, and the wrapping strip 108 wraps the protruding end of the top cover 101.
[0044] In this embodiment, in order to maintain the sealing effect of the waterproof strip 107, an integral wrapping strip 108 is added to the waterproof strip 107. The wrapping strip 108 can wrap the protruding end of the top cover 101, making it less prone to breakage and twisting, thus preventing waterproof failure. At the same time, the setting of the wrapping strip 108 makes it easy to install. The wrapping strip 108 can be installed on the top cover 101 first, and then the top cover 101 and the housing 100 can be assembled.
[0045] Specifically, the wrapping strip 108 and the waterproof strip 107 work together to form a "C"-shaped structure to wrap the protruding end of the top cover 101.
[0046] More preferably, the top cover 101 has a clamping groove at its open end and a connecting part 120 at its open end. When the top cover 101 is connected to the housing 100, a first clamping cavity 109 is formed between the clamping groove and the outer wall of the housing 100, and a second clamping cavity 110 is formed between the connecting part 120 and the inner wall of the housing 100. The waterproof strip 107 is clamped and fixed in the first clamping cavity 109 and the second clamping cavity 110.
[0047] It should be noted that the connecting part 120 protrudes from the top cover 101 to form a protruding end on the top cover 101.
[0048] In this embodiment, as an optional solution, the first clamping cavity 109 and the second clamping cavity 110 are arranged perpendicularly to each other to increase the contact area with the sealing ring 104. The arrangement of the first clamping cavity 109 and the second clamping cavity 110 perpendicularly to each other ensures a good clamping effect when the top cover 101 is connected to the housing 100.
[0049] It should be noted that the sealing plate 103 is provided with a wire passage hole to facilitate the wire harness to pass through the housing 100, and the wire passage hole and the wire harness are sealed together.
[0050] It is worth mentioning that a connecting seat 115 is provided on the sealing plate 103 and a connecting post 116 is provided on the top cover 101. The connecting seat 115 is connected to the connecting post 116 to fix the sealing plate 103 and the top cover 101.
[0051] In this embodiment, the lower side of the sealing plate 103 abuts against the battery bracket 111, and the connecting seat 115 and the connecting post 116 can also be connected by screw thread or other connection methods.
[0052] It is worth mentioning that the side of the housing 100 is provided with a connection hole 117. The set screw passes through the sealing ring 104 and is screwed into the sealing plate 103 to strengthen the connection between the sealing plate 103 and the housing 100.
[0053] A battery includes the battery casing described above. A battery support 111 is provided in a receiving cavity 119. A plurality of battery cavities 114 for receiving batteries are provided on the battery support 111, and the length extension direction of the battery cavities 114 is perpendicular to the length extension direction of the casing 100.
[0054] In this embodiment, the length direction of the battery is perpendicular to the length extension direction of the housing 100, that is, the extension directions of the positive and negative terminals of the battery are perpendicular to the length extension direction of the housing 100, so that the positive and negative terminals of the battery are respectively on the two opposite end faces of the battery bracket 111, which facilitates the connection between the busbar and the battery and shortens its connection path.
[0055] It is worth mentioning that the battery bracket 111 includes a first bracket 112 and a second bracket 113, which are spliced together to form a battery bracket 111. The battery bracket 111 is provided with a protrusion, and a limiting cavity is formed inside the housing 100 to limit the relative position of the battery bracket 111 inside the housing 100. A wire harness cavity 118 is formed between the housing 100 and the battery bracket 111 to facilitate the installation and layout of the wire harness.
[0056] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0057] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0058] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A battery casing, characterized in that, include: A housing, wherein a receiving cavity with an opening at one end is provided inside the housing; A top cover, which is connected to the housing to close the opening on the housing, and the top cover and the housing are sealed together. A sealing part is located inside the receiving cavity, and the sealing part is sealed to the cavity wall of the receiving cavity; The sealing part includes a sealing plate, and the outer peripheral surface of the sealing plate is sealed to the cavity wall to achieve the closure of the receiving cavity; A sealing ring is provided on the outer peripheral surface of the sealing plate, and the sealing ring is clamped and fixed between the sealing plate and the cavity wall; or the sealing plate is filled with a glue-filling part, and the glue-filling part abuts against the cavity wall of the receiving cavity.
2. The battery casing according to claim 1, characterized in that, A sealing ring is provided on the outer peripheral surface of the sealing plate. The sealing ring is clamped and fixed between the sealing plate and the cavity wall. The sealing plate is also filled with an adhesive filling part, which abuts against the cavity wall of the receiving cavity.
3. A battery casing according to claim 1 or 2, characterized in that, An enclosing ring is integrally provided on the sealing ring. When the sealing ring is clamped and fixed between the cavity wall and the sealing plate, the enclosing ring covers the upper surface of the sealing plate.
4. A battery casing according to claim 1, characterized in that, A waterproof strip is provided between the top cover and the housing.
5. A battery casing according to claim 4, characterized in that, The waterproof strip is integrally provided with a wrapping strip. When the top cover is connected to the housing, the inner wall of the top cover protrudes from the inner wall of the housing. The waterproof strip is clamped and fixed between the top cover and the housing, and the wrapping strip wraps the protruding end of the top cover.
6. A battery casing according to claim 4, characterized in that, The top cover has a clamping groove at its open end and a connecting part at its open end. When the top cover is connected to the housing, a first clamping cavity is formed between the clamping groove and the outer wall of the housing, and a second clamping cavity is formed between the connecting part and the inner wall of the housing. The waterproof strip is clamped and fixed in the first clamping cavity and the second clamping cavity.
7. A battery casing according to claim 1, characterized in that, A connecting seat is provided on the sealing plate, and a connecting post is provided on the top cover. The connecting seat is connected to the connecting post to fix the sealing plate and the top cover.
8. A battery, characterized in that, Includes the battery casing as described in any one of claims 1-7 above.