Battery
By using a segmented design for the housing components and sealing structure, the problem of high-cost one-piece molding process is solved, achieving low-cost production and high-safety batteries suitable for car portable power banks.
Patent Information
- Application Number
- CN202422695188.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Existing multi-layer stacked energy storage battery packs have a large box depth, and the cost of using a one-piece molding process is high, which also affects the internal space. The mold cost is high and the production is difficult.
The box assembly adopts a segmented design, forming an accommodating space by splicing the first and second side wall sections. The opening is sealed with the first and second sealing caps respectively. Combined with overlapping sections, concave and convex grooves, and flanged sections, the sealing performance and stability are improved.
It reduces production costs and complexity, improves battery maintenance convenience and safety, enhances stability under impact and vibration, and extends battery life.
Smart Images
Figure CN223514124U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of battery technology, and more particularly to a battery. Background Technology
[0002] For multi-layer stacked energy storage battery packs, the height is very high, and the corresponding box depth is relatively large. If a one-piece molding process is used, the stamping depth is too deep, the draft angle is large, which affects the internal space, and the mold cost is high, resulting in high cost. Utility Model Content
[0003] The purpose of this disclosure is to reduce the difficulty of battery production.
[0004] According to this disclosure, a battery is disclosed, including a battery cell and a housing assembly, wherein the battery cell is disposed within the housing assembly, and the housing assembly includes:
[0005] The housing includes a first sidewall segment and a second sidewall segment extending circumferentially. The first sidewall segment includes a first connecting edge and a second connecting edge spaced apart circumferentially from the housing. The second sidewall segment includes a third connecting edge and a fourth connecting edge spaced apart circumferentially from the housing. The first connecting edge connects to the third connecting edge, and the second connecting edge connects to the fourth connecting edge, so that the first and second sidewall segments are joined to form a space for accommodating individual battery cells. The space has two openings along the height direction of the housing.
[0006] The first sealing cap and the second sealing cap are used to seal the two openings respectively.
[0007] The battery housing assembly in this embodiment avoids the use of high-cost one-piece molding molds, thereby reducing the initial investment cost of the housing assembly and significantly reducing the production difficulty and cost of the battery. The housing is formed by splicing the first side wall section and the second side wall section to create a storage space. The segmented design allows the housing assembly to be manufactured using simpler and lower-cost manufacturing processes, meeting the structural and sealing requirements of the housing assembly through low-cost production. By providing two openings in the height direction of the housing and sealing these two openings with the first sealing cover and the second sealing cover respectively, the convenience of battery maintenance can be improved.
[0008] In some embodiments,
[0009] The first connecting edge and the third connecting edge have overlapping segments along the circumferential direction; and / or
[0010] The second and fourth connecting edges have overlapping sections along their circumferential direction.
[0011] This embodiment improves the sealing of the housing assembly by setting an overlapping section at the joint of the first side wall section and the second side wall section, effectively preventing external substances such as moisture and dust from entering the battery and preventing electrolyte leakage from the battery cells, thereby extending the battery's lifespan and improving battery safety. The overlapping section increases the contact area between the connecting edges, which can disperse the pressure on the connection point, thereby improving the stability of the housing and thus improving the stability and safety of the battery under impact, vibration and other disturbances.
[0012] In some embodiments,
[0013] The first connecting edge includes a first recessed portion, and the third connecting edge includes a third recessed portion. The first and third recessed portions are located on opposite sides of the sidewall of the housing and are in a concave-convex fit.
[0014] The second connecting edge includes a second recessed groove, and the fourth connecting edge includes a fourth recessed groove. The second recessed groove and the fourth recessed groove are located on opposite sides of the side wall of the housing and are in a concave-convex fit.
[0015] This embodiment increases the contact area between the connecting edges by setting a recessed groove on the opposite side of the box sidewall at the connecting edge, forming a tight sealing surface at the connection point. This ensures that the connecting edges fit more tightly during assembly, improving the overall sealing performance. The recessed groove also acts as a guide, helping workers to quickly align the connecting edges during assembly, improving assembly efficiency. The sidewall sections are connected by the recessed groove, which also improves the stability of the connection point and the stability of the box.
[0016] In some embodiments, the first sidewall segment and the second sidewall segment have the same shape and size.
[0017] This embodiment enables mass production to reduce production costs by using sidewall sections with the same shape and size; standardized sidewall sections simplify inventory management, reduce assembly difficulty and error rate during assembly; identical sidewall sections can be quickly replaced, reducing maintenance costs and improving the ease of maintenance of the enclosure components.
[0018] In some embodiments,
[0019] One of the openings of the housing is provided with a first flange, which is connected to a first sealing cover; and / or
[0020] The other opening of the box is provided with a second flange, which is connected to the second sealing cover.
[0021] This embodiment provides a flange at the opening of the casing, which facilitates the connection between the casing and the first and second sealing covers. The flange increases the contact area between the sealing cover and the casing, improves the connection strength between the sealing cover and the casing, enhances the sealing performance of the casing components, and thus improves the safety and lifespan of the battery.
[0022] In some embodiments, a recess is provided on the outer edge of the first flange and / or the second flange.
[0023] The recessed portion of this embodiment can avoid interference between the fastener head and the flange, thus improving the ease of use of the battery.
[0024] In some embodiments, the housing assembly further includes:
[0025] A reinforcing beam is provided on the outer side of the box body, connecting the first flange and the second flange; and
[0026] The first connecting part is connected between the reinforcing beam and the first flange, or between the reinforcing beam and the second flange.
[0027] This embodiment connects the box body, the first flange, and the second flange together through the reinforcing beam and the first connecting part, which can enhance the overall strength of the box body assembly and improve its compressive strength and stability.
[0028] In some embodiments,
[0029] Both the first and second sidewall segments include a first plate, a second plate, and a third plate along the circumferential direction. The first and third plates are arranged opposite each other and spaced apart along the first direction. The second plate is connected between the first and third plates. The plane in which the second plate is located is perpendicular to the second direction. The first direction is perpendicular to the height direction. The second direction is perpendicular to both the height direction and the first direction.
[0030] This embodiment, by having two sidewall sections each including a first plate, a second plate, and a third plate, can be spliced into a stable cuboid box, improving the overall strength and stability of the box assembly.
[0031] In some embodiments,
[0032] The first, second, and third plates are formed as one piece by bending.
[0033] In this embodiment, the first, second, and third plates are formed integrally by bending, which can improve production efficiency and product quality, as well as enhance the sealing and stability of the housing assembly.
[0034] In some embodiments, along the second direction, the equally spaced positions of the housing are located between the first connecting edge and the second connecting edge.
[0035] This embodiment avoids the reinforcing beam, the screw mounting holes of the flanged part, and the recessed part by placing the equally divided positions of the box body between the first connecting edge and the second connecting edge, that is, the splice avoids the middle area along the second direction. It can also avoid the pressure relief components, stagger the weak points, and make the overall strength of the box body more uniform.
[0036] In some embodiments, the enclosure includes four corner edges, a first flange is provided at one opening of the enclosure, and a second flange is provided at the other opening of the enclosure. Both the first and second flanges form notches at the corner edges. The enclosure assembly further includes:
[0037] The second connecting part is provided at the notch, and the second connecting part is used to make the first flange or the second flange continuous in the circumferential direction.
[0038] This embodiment fills the gap circumferentially with the second connecting part, which makes the first or second flange continuous circumferentially. This facilitates a tight connection between the housing and the first and second sealing caps at the gaps caused by the corner edges. By reinforcing the connection at the eight vertices of the cuboid, the connection strength between the sealing cap and the housing can be further improved, the sealing performance of the housing assembly can be improved, and the safety and lifespan of the battery can be enhanced.
[0039] In some embodiments, the second connecting portion includes:
[0040] The fixing part is connected to the corner edge;
[0041] The sealing portion, flush with the first or second flange along its height, is used to fill the gap circumferentially; and
[0042] Two overlapping portions are respectively connected to the two sides of the sealing portion in the circumferential direction. The overlapping portions are connected in the height direction to the side of the first flange portion away from the first sealing cover, or to the side of the second flange portion away from the second sealing cover.
[0043] The fixing part of this embodiment can fix the position of the second connecting part and prevent the second connecting part from falling off the casing; the sealing part can fill the gap in the circumferential direction to improve the sealing and stability of the casing assembly; the two overlapping parts can cooperate with the fixing part to further fix the position of the second connecting part; the fixing part, the sealing part and the two overlapping parts cooperate to achieve effective sealing and reinforcement of the casing assembly at the gap, thereby improving the safety and stability of the battery.
[0044] In some embodiments, the battery is used as a portable car charger.
[0045] The battery in this embodiment is used in a car portable power bank. The robust housing assembly can significantly improve the safety of the battery during movement, especially under the shaking of bumpy roads, and can significantly improve the stability and safety of the battery under the interference of impact, vibration and other disturbances. Attached Figure Description
[0046] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of the present disclosure and are used to explain the disclosure, but do not constitute an undue limitation thereof. In the drawings:
[0047] Figure 1 This is a schematic diagram of the structure of some embodiments of the battery housing disclosed herein.
[0048] Figure 2 The diagram shows structural schematics of some other embodiments of the battery housing disclosed herein.
[0049] Figure 3 This is a structural schematic diagram of some further embodiments of the battery housing disclosed herein.
[0050] Explanation of reference numerals in the attached figures
[0051] 1. First plate; 2. Second plate; 3. Third plate; 100. Box body; 101. First side wall section; 102. Second side wall section; 11. First connecting edge; 12. Second connecting edge; 13. Third connecting edge; 14. Fourth connecting edge; 15. Pressure relief component; 110. First flange; 120. Second flange; 111. Recessed part; 130. Reinforcing beam; 131. First connecting part; 140. Corner edge; 150. Notch; 160. Second connecting part; 161. Fixing part; 162. Sealing part; 163. Overlapping part; z. Height direction; x. First direction; y. Second direction. Detailed Implementation
[0052] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values set forth in these embodiments should be interpreted as exemplary only and not as limiting.
[0053] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.
[0054] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.
[0055] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.
[0056] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.
[0057] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.
[0058] In related technologies, multi-layer stacked energy storage battery packs are very tall, with a box depth of over 500mm, and the cost of molds using one-piece molding processes is high.
[0059] To address the aforementioned problems, this disclosure proposes a battery, such as... Figures 1 to 3 As shown, it includes individual battery cells and a housing assembly. The individual battery cells are housed within the housing assembly, which includes:
[0060] The housing 100 includes a first sidewall segment 101 and a second sidewall segment 102 extending circumferentially. The first sidewall segment 101 includes a first connecting edge 11 and a second connecting edge 12 spaced apart circumferentially from the housing 100. The second sidewall segment 102 includes a third connecting edge 13 and a fourth connecting edge 14 spaced apart circumferentially. The first connecting edge 11 connects to the third connecting edge 13, and the second connecting edge 12 connects to the fourth connecting edge 14, so that the first sidewall segment 101 and the second sidewall segment 102 are joined to form a space for accommodating a single battery cell. The space has two openings along the height z direction of the housing 100.
[0061] The first sealing cap and the second sealing cap are used to seal the two openings respectively.
[0062] Specifically, the first connecting edge 11 and the third connecting edge 13 are sealed together, and the second connecting edge 12 and the fourth connecting edge 14 are sealed together, thus sealing the housing 100 circumferentially. Specifically, both the first sealing cover and the second sealing cover are sealed to the housing 100 to meet the sealing requirements of the housing assembly. Specifically, when it is necessary to replace or repair individual battery cells inside the housing assembly, only the corresponding sealing cover needs to be opened for operation, which improves the convenience and efficiency of maintenance.
[0063] Optionally, the projection of the housing 100 along the height direction z can be any shape, such as rectangle, circle, or ellipse. Optionally, the first connecting edge 11 and the third connecting edge 13 can be sealed together using any connection method, and the second connecting edge 12 and the fourth connecting edge 14 can be sealed together using any connection method, such as spot welding combined with sealant. Optionally, the first sealing cover and the second sealing cover can be connected to the housing 100 by spot welding combined with sealant, and sealing rings can also be provided on the first sealing cover and the second sealing cover.
[0064] Optionally, one or more battery cells can be provided. Optionally, the first connecting edge 11, the second connecting edge 12, the third connecting edge 13, or the fourth connecting edge 14 can extend along the height direction z, or be vertically arranged, or can be inclined or bent. Optionally, both the first sealing cover and the second sealing cover are perpendicular to the height direction z. Optionally, the first sidewall section 101 and the second sidewall section 102 can use the same components to further reduce production costs.
[0065] The battery housing assembly in this embodiment avoids the use of high-cost one-piece molding molds, thereby reducing the initial investment cost of the housing assembly and significantly reducing the production difficulty and cost of the battery. The housing 100 forms an accommodating space by splicing the first side wall section 101 and the second side wall section 102. The segmented design allows the housing assembly to be produced using simpler and lower-cost manufacturing processes, meeting the structural and sealing requirements of the housing assembly through low-cost production. By providing two openings in the height direction z of the housing and sealing these two openings with the first sealing cover and the second sealing cover respectively, the maintenance convenience of the battery can be improved.
[0066] In some embodiments,
[0067] The first connecting edge 11 and the third connecting edge 13 have overlapping sections along the circumferential direction; and / or
[0068] The second connecting edge 12 and the fourth connecting edge 14 have overlapping sections along the circumferential direction.
[0069] Specifically, the first connecting edge 11 and the third connecting edge 13 coincide along the thickness direction (e.g., the first direction x) of the housing 100, and / or the second connecting edge 12 and the fourth connecting edge 14 coincide along the thickness direction (e.g., the first direction x) of the housing 100. Optionally, the overlapping sections can overlap with the wall thickness remaining constant, can overlap with complementary inclined surfaces, or can overlap with concave and convex fittings of the groove portion, etc.
[0070] Specifically, overlapping connections of the two side wall segments are easier to manufacture than connections where only the cross-sections of the two side wall segments are precisely aligned. This reduces errors during assembly and improves production efficiency. For example, even if slight dimensional deviations occur in some cases, the overlapping design can provide a certain degree of tolerance, ensuring the effectiveness of the connection between the two side wall segments.
[0071] This embodiment improves the sealing of the housing assembly by setting an overlapping section at the joint of the first side wall section 101 and the second side wall section 102, effectively preventing external substances such as moisture and dust from entering the battery and preventing electrolyte leakage from the battery cells, thereby extending the battery's lifespan and improving battery safety. The overlapping section increases the contact area between the connecting edges, which can disperse the pressure on the connection point, thereby improving the stability of the housing 100 and thus improving the stability and safety of the battery under impact, vibration and other disturbances.
[0072] In some embodiments, the first connecting edge 11 includes a first recessed portion, the third connecting edge 13 includes a third recessed portion, the first recessed portion and the third recessed portion are located on opposite sides of the side wall of the housing 100 and are in a concave-convex fit; and / or the second connecting edge 12 includes a second recessed portion, the fourth connecting edge 14 includes a fourth recessed portion, the second recessed portion and the fourth recessed portion are located on opposite sides of the side wall of the housing 100 and are in a concave-convex fit.
[0073] Specifically, the first sinking section and the third sinking section are complementary, and the second sinking section and the fourth sinking section are complementary. For example, when at least a portion of the splicing surface of the first sinking section faces the receiving space, at least a portion of the splicing surface of the third sinking section faces away from the receiving space. The aforementioned at least a portion of the splicing surface may be a splicing surface perpendicular to the first direction x.
[0074] Optionally, the first and third recessed sections are seamlessly connected, and the second and fourth recessed sections are seamlessly connected. Optionally, the thickness of the housing 100 at the joints is the same as the thickness at the non-joints. Optionally, the first and third recessed sections can be sealed at the joint surface using a combination of spot welding and sealant, and the second and fourth recessed sections can also be sealed at the joint surface using a combination of spot welding and sealant.
[0075] This embodiment increases the contact area between the connecting edges by providing recessed and convex grooves on opposite sides of the sidewall of the housing 100 at the connecting edge, forming a tight sealing surface at the connection point. This ensures that the connecting edges fit more tightly during assembly, improving the overall sealing performance. The recessed and convex grooves also serve as guides, helping workers to quickly align the connecting edges during assembly, thus improving assembly efficiency. Furthermore, the connection of the sidewall sections via the recessed and convex grooves also enhances the stability of the connection point and the overall stability of the housing 100.
[0076] In some embodiments, such as Figures 1 to 3 As shown, the first sidewall segment 101 and the second sidewall segment 102 have the same shape and size.
[0077] This embodiment enables mass production to reduce production costs by using sidewall sections with the same shape and size; standardized sidewall sections simplify inventory management, reduce assembly difficulty and error rate during assembly; identical sidewall sections can be quickly replaced, reducing maintenance costs and improving the ease of maintenance of the enclosure components.
[0078] In some embodiments, such as Figures 1 to 3 As shown,
[0079] The housing 100 has a first flange 110 at one of its openings, and the first flange 110 is connected to the first sealing cover; and / or
[0080] The other opening of the housing 100 is provided with a second flange 120, which is connected to the second sealing cover.
[0081] Specifically, the first flange 110 facilitates the connection between the first sealing cover and the housing 100, and the second flange 120 facilitates the connection between the second sealing cover and the housing 100. Optionally, the connection between the flange and the sealing cover can be achieved by screw connection or spot welding combined with sealant to ensure a seal. Optionally, the first flange 110 and the second flange 120 are arranged opposite each other along the height direction z. Optionally, the first flange 110 is perpendicular to the height direction z, and the second flange 120 is perpendicular to the height direction z.
[0082] Optionally, the first flange 110 may be formed by bending the first sidewall section 101 and / or the second sidewall section 102 toward the outside of the receiving space, or it may be formed by welding a strip plate to the box body 100; the second flange 120 may be formed by bending the first sidewall section 101 and / or the second sidewall section 102 toward the outside of the receiving space, or it may be formed by welding a strip plate to the box body 100.
[0083] This embodiment provides a flange at the opening of the housing 100, which facilitates the connection between the housing 100 and the first and second sealing covers. The flange increases the contact area between the sealing cover and the housing 100, improves the connection strength between the sealing cover and the housing 100, enhances the sealing performance of the housing assembly, and thus improves the safety and lifespan of the battery.
[0084] In some embodiments, such as Figures 1 to 3 As shown, a recessed portion 111 is provided on the outer edge of the first flange portion 110 and / or the second flange portion 120.
[0085] Specifically, during installation, the battery is first fixed to a plate (connector) by means of adhesive or other methods. The plate extends beyond the battery on all sides. Then, the plate is installed onto a base by fasteners. The fasteners pass through the plate and the base. The recessed part 111 can avoid the head of the fastener used when installing the battery or plate.
[0086] The recessed portion 111 in this embodiment can avoid the fastener head of the battery, preventing interference between the fastener head and the flange, and improving the ease of use of the battery.
[0087] In some embodiments, such as Figure 3 As shown, the enclosure assembly also includes:
[0088] A reinforcing beam 130 is provided on the outer surface of the box body 100, and the reinforcing beam 130 connects the first flange 110 and the second flange 120; and
[0089] The first connecting part 131 is connected between the reinforcing beam 130 and the first flange part 110, or between the reinforcing beam 130 and the second flange part 120.
[0090] Specifically, the reinforcing beam 130 is located on the outer side of the housing 100 to avoid occupying the space for accommodating the battery cells, and the first connecting part 131 can increase the convenience and stability of the connection between the reinforcing beam 130 and the first flange 110 and the second flange 120.
[0091] This embodiment connects the box body 100, the first flange 110, and the second flange 120 together through the reinforcing beam 130 and the first connecting part 131, which can enhance the overall strength of the box body assembly and improve its compressive strength and stability.
[0092] In some embodiments, such as Figures 1 to 3 As shown,
[0093] The first sidewall segment 101 and the second sidewall segment 102 both include a first plate 1, a second plate 2 and a third plate 3 along the circumferential direction. The first plate 1 and the third plate 3 are arranged opposite each other and spaced apart along the first direction x. The second plate 2 is connected between the first plate 1 and the third plate 3. The plane where the second plate 2 is located is perpendicular to the second direction y. The first direction x is perpendicular to the height direction z. The second direction y is perpendicular to the height direction z and the first direction x.
[0094] Specifically, the box 100 is rectangular in shape. By combining the first plate 1, the second plate 2, and the third plate 3, a stable frame structure can be formed, improving the rigidity and compressive strength of the side wall sections.
[0095] Specifically, when the first sidewall segment 101 and the second sidewall segment 102 are the same workpiece, the first plate 1 of the first sidewall segment 101 is connected to the third plate 3 of the second sidewall segment 102, and the third plate 3 of the first sidewall segment 101 is connected to the first plate 1 of the second sidewall segment 102. The dimensions of the first plate 1 and the third plate 3 can be different, that is, the splicing point along the second direction y avoids the middle area, or they can be the same, that is, the splicing position along the second direction y is in the middle area.
[0096] Optionally, the first plate 1, the second plate 2, and the third plate 3 can be manufactured separately or formed integrally by bending. Optionally, the dimensions of the first plate 1 of the first sidewall segment 101 and the first plate 1 of the second sidewall segment 102 can be the same or different; the dimensions of the third plate 3 of the first sidewall segment 101 and the third plate 3 of the second sidewall segment 102 can be the same or different.
[0097] This embodiment, by having two side wall sections each including a first plate 1, a second plate 2, and a third plate 3, can be spliced into a stable cuboid box 100, improving the overall strength and stability of the box assembly.
[0098] In some embodiments, the first plate 1, the second plate 2, and the third plate 3 are integrally formed by bending.
[0099] Specifically, integrated bending manufacturing is simpler than welding or splicing, reducing manufacturing steps and time, improving production efficiency, and lowering production costs; it can eliminate the connection weaknesses that may occur with traditional welding or splicing methods; the structure formed by bending can reduce gaps at the joints, improve the sealing performance of the enclosure in 100 circumference, and prevent moisture or dust from entering the containment space; the bending process can ensure greater consistency in the size and shape of the side wall sections, improving product quality.
[0100] In this embodiment, the first plate 1, the second plate 2, and the third plate 3 are formed integrally by bending, which can improve production efficiency and product quality, and improve the sealing and stability of the box assembly.
[0101] In some embodiments, such as Figures 1 to 3 As shown, along the second direction y, the equally spaced positions of the box are located between the first connecting edge 11 and the second connecting edge 12.
[0102] Optionally, an explosion-proof valve or other pressure relief component 15 may be installed on the first side wall section 101 or the second side wall section 102.
[0103] This embodiment avoids the reinforcing beam 130, the screw mounting holes of the flanged part and the recessed part 111, etc., by placing the equally divided positions of the box body between the first connecting edge 11 and the second connecting edge 12, that is, the splice avoids the middle area along the second direction y. It can also avoid the pressure relief component 15, stagger the weak positions, and make the overall strength of the box body 100 more uniform.
[0104] In some embodiments, such as Figure 2 and Figure 3 As shown, the box body 100 includes four corner edges 140. A first flange 110 is provided at one opening of the box body 100, and a second flange 120 is provided at the other opening. Both the first flange 110 and the second flange 120 form notches 150 at the corner edges 140. The box body assembly also includes:
[0105] The second connecting part 160 is provided at the notch 150. The second connecting part 160 is used to make the first flange 110 or the second flange 120 circumferentially continuous along the circumferential direction.
[0106] Specifically, the corner edge 140 is located at the bend of the first sidewall section 101 or the second sidewall section 102, and the corner edge 140 is an arc-shaped edge, and the second connecting part 160 is an arc-shaped connecting part. Eight notches 150 are formed at the four corner edges 140, and correspondingly, the housing assembly includes eight second connecting parts 160. Optionally, the second connecting parts 160 can be manufactured by stamping.
[0107] This embodiment fills the circumferential gap 150 with the second connecting part 160, which makes the first flange 110 or the second flange 120 circumferentially continuous. This facilitates a tight connection between the housing 100 and the first and second sealing covers at the gap 150 caused by the corner edge 140. By reinforcing the connection at the eight vertices of the cuboid, the connection strength between the sealing cover and the housing 100 can be further improved, the sealing performance of the housing assembly can be improved, and the safety and service life of the battery can be enhanced.
[0108] In some embodiments, such as Figure 3 As shown, the second connecting part 160 includes:
[0109] The fixing part 161 is connected to the corner edge 140;
[0110] The sealing portion 162 is flush with the first flange portion 110 or the second flange portion 120 along the height direction z, and the sealing portion 162 is used to fill the notch 150 in the circumferential direction; and
[0111] Two overlapping portions 163 are respectively connected to both sides of the sealing portion 162 in the circumferential direction. The overlapping portions 163 are connected to the side of the first flange portion 110 away from the first sealing cover in the height direction z, or connected to the side of the second flange portion 120 away from the second sealing cover.
[0112] Optionally, the fixing part 161 can be connected to the corner edge 140 by spot welding and sealing adhesive, and the two overlapping parts 163 can be connected to the first flange part 110 or the second flange part 120 by spot welding and sealing adhesive. Optionally, in addition to being connected to the corner edge 140, the two fixing parts 161 can also be connected to the two plates adjacent to the corner edge 140.
[0113] In this embodiment, the fixing part 161 can fix the position of the second connecting part 160 to prevent the second connecting part 160 from falling off the housing 100; the sealing part 162 can fill the gap 150 in the circumferential direction to improve the sealing and stability of the housing assembly; the two overlapping parts 163 can cooperate with the fixing part 161 to further fix the position of the second connecting part 160; the fixing part 161, the sealing part 162 and the two overlapping parts 163 cooperate to achieve effective sealing and reinforcement of the housing assembly at the gap 150, thereby improving the safety and stability of the battery.
[0114] In some embodiments, the battery is used in a car portable power bank. A robust housing assembly significantly improves the safety of the car portable power bank during transport, especially under the influence of vibrations on bumpy roads, and significantly enhances the stability and safety of the battery under impacts, vibrations, and other disturbances.
[0115] In some specific embodiments, such as Figure 3As shown, the battery includes individual battery cells and a housing assembly. The individual battery cells are housed within the housing assembly, which includes:
[0116] The housing 100 includes a first sidewall segment 101 and a second sidewall segment 102 that both extend circumferentially. The first sidewall segment 101 and the second sidewall segment 102 have the same shape and size. The first sidewall segment 101 and the second sidewall segment 102 both include a first plate 1, a second plate 2 and a third plate 3 along the circumferential direction. The first plate 1 and the third plate 3 are arranged opposite to each other and spaced apart along a first direction x. The second plate 2 is connected between the first plate 1 and the third plate 3. The plane in which the second plate 2 is located is perpendicular to the second direction y. The first direction x is perpendicular to the height direction z. The second direction y is perpendicular to the height direction z and the first direction x. The first sidewall segment 101 and the second sidewall segment 102 are spliced together to form a housing space for accommodating battery cells. The housing space has two openings along the height direction z of the housing 100.
[0117] The first sealing cover and the second sealing cover are used to close the two openings respectively. One of the openings of the box body 100 is provided with a first flange 110, which is connected to the first sealing cover. The other opening of the box body 100 is provided with a second flange 120, which is connected to the second sealing cover.
[0118] A reinforcing beam 130 is provided on the outer side of the box body 100, and the reinforcing beam 130 is connected between the first flange 110 and the second flange 120;
[0119] The first connecting part 131 is connected between the reinforcing beam 130 and the first flange part 110, or between the reinforcing beam 130 and the second flange part 120;
[0120] The second connecting portion 160 is provided at the notch 150 formed by the first flange portion 110 and the second flange portion 120 at the corner edge 140. The second connecting portion 160 is used to make the first flange portion 110 or the second flange portion 120 circumferentially continuous.
[0121] In this embodiment, the battery casing 100 is formed by splicing two identical side wall sections, which can avoid the use of high-cost molds and reduce the production cost of the battery. The flange, reinforcing beam 130, first connecting part 131 and second connecting part 160 work together to improve the connection strength between the sealing cover and the casing 100, improve the sealing performance of the casing assembly, and thus improve the safety and service life of the battery.
[0122] The present disclosure provides a detailed description of a battery. Specific embodiments have been used to illustrate the principles and implementation methods of the present disclosure. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the present disclosure. It should be noted that those skilled in the art can make various improvements and modifications to the present disclosure without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this disclosure.
Claims
1. A battery, characterized in that, It includes a battery cell and a housing assembly, wherein the battery cell is disposed within the housing assembly, and the housing assembly includes: The housing (100) includes a first sidewall segment (101) and a second sidewall segment (102) extending circumferentially. The first sidewall segment (101) includes a first connecting edge (11) and a second connecting edge (12) spaced apart circumferentially from the housing (100). The second sidewall segment (102) includes a third connecting edge (13) and a fourth connecting edge (14) spaced apart circumferentially. The first connecting edge (11) is connected to the third connecting edge (13), and the second connecting edge (12) is connected to the fourth connecting edge (14), so that the first sidewall segment (101) and the second sidewall segment (102) are joined to form a receiving space for accommodating the battery cell. The receiving space has two openings along the height direction (z) of the housing (100). The first sealing cap and the second sealing cap are used to close the two openings, respectively.
2. The battery according to claim 1, characterized in that, The first connecting edge (11) and the third connecting edge (13) have overlapping segments along the circumferential direction; and / or The second connecting edge (12) and the fourth connecting edge (14) have overlapping segments along the circumferential direction.
3. The battery according to claim 2, characterized in that, The first connecting edge (11) includes a first recessed portion, and the third connecting edge (13) includes a third recessed portion. The first recessed portion and the third recessed portion are located on opposite sides of the side wall of the housing (100) and are in a concave-convex fit; and / or The second connecting edge (12) includes a second sinking portion, and the fourth connecting edge (14) includes a fourth sinking portion. The second sinking portion and the fourth sinking portion are located on opposite sides of the side wall of the box body (100) and are in a concave-convex fit.
4. The battery according to claim 1, characterized in that, The first sidewall segment (101) and the second sidewall segment (102) have the same shape and size.
5. The battery according to claim 1, characterized in that, The housing (100) has a first flange (110) at one of its openings, and the first flange (110) is connected to the first sealing cover; and / or The other opening of the housing (100) is provided with a second flange (120), which is connected to the second sealing cover.
6. The battery according to claim 5, characterized in that, A recess (111) is provided on the outer edge of the first flange (110) and / or the second flange (120).
7. The battery according to claim 5, characterized in that, The enclosure assembly also includes: A reinforcing beam (130) is provided on the outer surface of the box body (100), and the reinforcing beam (130) connects the first flange (110) and the second flange (120); and The first connecting part (131) is connected between the reinforcing beam (130) and the first flange (110), or between the reinforcing beam (130) and the second flange (120).
8. The battery according to any one of claims 1 to 7, characterized in that, The first sidewall segment (101) and the second sidewall segment (102) both include a first plate (1), a second plate (2) and a third plate (3) along the circumferential direction. The first plate (1) and the third plate (3) are arranged opposite to each other and spaced apart along the first direction (x). The second plate (2) is connected between the first plate (1) and the third plate (3). The plane in which the second plate (2) is located is perpendicular to the second direction (y). The first direction (x) is perpendicular to the height direction (z). The second direction (y) is perpendicular to the height direction (z) and the first direction (x).
9. The battery according to claim 8, characterized in that, The first plate (1), the second plate (2) and the third plate (3) are formed integrally by bending.
10. The battery according to claim 8, characterized in that, Along the second direction (y), the equally spaced positions of the box body are located between the first connecting edge (11) and the second connecting edge (12).
11. The battery according to claim 8, characterized in that, The housing (100) includes four corner edges (140). A first flange (110) is provided at one of the openings of the housing (100), and a second flange (120) is provided at the other opening. Both the first flange (110) and the second flange (120) form notches (150) at the corner edges (140). The housing assembly further includes: A second connecting portion (160) is provided at the notch (150), and the second connecting portion (160) is used to make the first flange portion (110) or the second flange portion (120) circumferentially continuous.
12. The battery according to claim 11, characterized in that, The second connecting part (160) includes: A fixing part (161) is connected to the corner edge (140); A sealing portion (162) is flush with the first flange portion (110) or the second flange portion (120) along the height direction (z), the sealing portion (162) being used to fill the notch (150) circumferentially; and Two overlapping portions (163) are respectively connected to both sides of the sealing portion (162) along the circumferential direction. The overlapping portions (163) are connected along the height direction (z) to the side of the first flange portion (110) away from the first sealing cover, or to the side of the second flange portion (120) away from the second sealing cover.
13. The battery according to claim 1, characterized in that, The battery is used as a portable power bank for cars.