Tray edge beam of battery pack, battery pack and electric equipment

Abstract

The utility model discloses a battery pack tray edge beam, a battery pack and electric equipment, the upper end of the battery pack tray edge beam is provided with a glue groove, the glue groove comprises a sealing groove and a glue overflow groove which are arranged at an interval, the sealing groove and the glue overflow groove are communicated with each other, and the sectional area of the glue overflow groove is larger than that of the sealing groove. The glue groove comprises the sealing groove and the glue overflowing groove which are communicated with each other, glue can flow into the glue overflowing groove when overflowing from the sealing groove, the sectional area of the glue overflowing groove is larger than that of the sealing groove, the glue overflowing groove can contain the glue overflowing from the sealing groove, the glue is prevented from flowing to other components to affect the safety of the battery pack, and the glue overflowing problem is solved; in addition, part of the glue can flow into the inner side of the tray edge beam along the edge of the tray edge beam, so that the bonding strength can be increased, and the same or higher bonding strength can be achieved under the condition that the usage amount of the glue is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a tray side beam of a battery pack, a battery pack and an electrical equipment. Background Art

[0002] In the related art, one or two glue grooves with a unilateral design are commonly used in a battery pack for sealing, and the size of the glue groove is usually (6mm - 9mm) * 1mm.

[0003] However, there is a serious problem of glue overflow in the existing glue groove. The overflowing glue affects other components, and at the same time increases the consumption of glue, resulting in unnecessary waste. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a tray side beam of a battery pack. By setting the glue groove as a mutually connected sealing groove and overflow groove, the problem of glue overflow is improved, and the same or stronger bonding strength can be achieved with less glue consumption.

[0005] The utility model further provides a battery pack.

[0006] The utility model also provides an electrical equipment.

[0007] According to the tray side beam of the battery pack in the first aspect embodiment of the utility model, a glue groove is arranged at the upper end of the battery pack tray side beam. The glue groove includes a sealing groove and an overflow groove arranged at intervals. The sealing groove and the overflow groove are mutually connected and the cross-sectional area of the overflow groove is larger than that of the sealing groove.

[0008] According to the tray side beam of the battery pack in the embodiment of the utility model, by setting the glue groove as a mutually connected sealing groove and overflow groove, when the glue overflows from the sealing groove, it can flow into the overflow groove. The cross-sectional area of the overflow groove is larger than that of the sealing groove, and the overflow groove can accommodate the glue overflowing from the sealing groove, preventing the glue from flowing to other components and affecting the safety of the battery pack, thus improving the problem of glue overflow. Part of the glue can flow along the edge of the tray side beam into the inside of the tray side beam. In this way, the bonding strength can be increased, and the same or stronger bonding strength can be achieved with less glue consumption.

[0009] According to some embodiments of the utility model, in the first direction, the size of the sealing groove is L1, and the size of the overflow groove is L2. L1 and L2 satisfy the relationship: L1 > L2; and in the second direction, the size of the sealing groove is H1, and the size of the overflow groove is H2. H1 and H2 satisfy the relationship: H1 < H2; where the first direction and the second direction are perpendicular to each other.

[0010] According to some embodiments of the present utility model, L1 and H1 respectively satisfy the relational expressions: 6 mm < L1 < 30 mm, H1 > 0.1 mm.

[0011] According to some embodiments of the present utility model, L2 and H2 respectively satisfy the relational expressions: L2 > 0.5 mm, 1 mm < H2 < 5 mm.

[0012] According to some embodiments of the present utility model, in the second direction, the bottom of the sealing groove is higher than the bottom of the glue overflow groove.

[0013] According to some embodiments of the present utility model, the bottom of the glue overflow groove is arc-shaped or semi-circular.

[0014] According to some embodiments of the present utility model, a first arc edge is provided at the connection between the sealing groove and the glue overflow groove; and, a second arc edge is provided between the sealing groove and the edge of the tray side beam.

[0015] The battery pack according to the second aspect embodiment of the present utility model includes: a tray, and a tray side beam of the battery pack is provided at the edge of the tray. A cover plate that covers the upper end surface of the tray, and an accommodation space is formed between the tray and the cover plate; a battery module, and the battery module is disposed in the accommodation space.

[0016] According to some embodiments of the present utility model, the battery pack further includes: a fastener, the fastener passes through the cover plate and is fixed on the tray, and the glue overflow groove is disposed closer to the fastener than the sealing groove.

[0017] The electrical device according to the third aspect embodiment of the present utility model includes the battery pack.

[0018] Compared with the traditional technology, the present utility model sets the glue groove as a mutually connected sealing groove and glue overflow groove. When the fastener fixes the tray and the cover plate, the glue will be extruded. Part of the glue remains in the sealing groove to play a sealing role, part of the glue remains in the glue overflow groove, and part of the glue flows into the inner side of the tray side beam along the second arc edge, effectively improving the problem of glue overflow, preventing the glue from flowing to other components and affecting the safety of the battery pack. Part of the glue flows into the inner side of the tray side beam along the edge of the tray side beam, which can increase the bonding strength, and can achieve the same or stronger bonding strength with less glue usage.

[0019] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0020] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0021] Figure 1 is a schematic partial structure diagram of a battery pack according to an embodiment of the present utility model Figure 1 ;

[0022] Figure 2 is a schematic partial structure diagram of a battery pack according to an embodiment of the present utility model Figure 2 ;

[0023] Figure 3 is Figure 2 the cross-sectional view A-A in

[0024] Figure 4 is Figure 3 the partial schematic diagram B in

[0025] Figure 5 is a schematic partial structure diagram of a battery pack according to an embodiment of the present utility model Figure 3 ;

[0026] Figure 6 is Figure 5 the cross-sectional view C-C in

[0027] Figure 7 is a schematic structural diagram of a sealing groove and a glue overflow groove according to an embodiment of the present utility model.

[0028] Reference numerals:

[0029] 10, tray; 11, tray side beam; 12, sealing groove; 13, glue overflow groove; 14, first arc edge;

[0030] 20, cover plate;

[0031] 30, fastener. Detailed implementation manners

[0032] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0033] Next, reference is made to Figures 1-7 to describe the tray side beam 11 of the battery pack according to an embodiment of the present utility model. Further, the present utility model also provides a battery pack, and further still, the present utility model also provides an electrical device.

[0034] Referring to Figures 1-7As shown in the figure, on the tray side beam 11 of the battery pack in the embodiment of the present utility model, a glue groove is provided at the upper end of the battery pack tray side beam 11. The glue groove includes a sealing groove 12 and an overflow glue groove 13 arranged at intervals. The sealing groove 12 and the overflow glue groove 13 are communicated with each other and the cross-sectional area of the overflow glue groove 13 is larger than that of the sealing groove 12.

[0035] Specifically, the sealing glue is evenly coated on the tray side beam 11 by a glue machine, which plays a role of sealing and bonding. A glue groove is provided on the tray side beam 11. The glue groove is divided into two parts, namely a sealing groove 12 and an overflow glue groove 13. When applying glue by the glue machine, the glue is evenly sprayed into the sealing groove 12. However, since the glue is a liquid that can flow and will not be fixed in the sealing groove 12, when the glue overflows from the sealing groove 12, it can flow into the overflow glue groove 13, preventing the glue from overflowing to other positions and affecting other components, thus improving the problem of glue overflow.

[0036] Among them, the sealing groove 12 is closer to the inside of the battery pack, and the overflow glue groove 13 is relatively farther from the inside of the battery pack. In this way, the glue overflows in the opposite direction of the battery pack, improving the safety of the battery pack. Moreover, the overflow glue groove 13 is closer to the area where glue is likely to overflow, and the layout is more reasonable, effectively improving the problem of glue overflow.

[0037] In addition, when the glue overflows from the sealing groove 12, a part of the glue will also flow along the edge of the tray side beam 11 into the inside of the tray side beam 11. In this way, in addition to the glue on the tray side beam 11 playing a bonding role, the inside of the tray side beam 11 is also coated with glue, which can increase the bonding strength and improve the overall mode. Moreover, the overflow glue increases the bonding strength, and the same or stronger bonding strength can be achieved with less glue usage.

[0038] Since the cross-sectional area of the overflow glue groove 13 is larger than that of the sealing groove 12, the glue capacity of the overflow glue groove 13 is also larger than that of the sealing groove 12. The overflow glue groove 13 can accommodate more overflow glue, preventing the glue from flowing to other components and affecting the safety of the battery pack. The smaller cross-sectional area of the sealing groove 12 can accommodate less glue, avoiding the use of too much glue. Together with other designs, the required bonding strength can be satisfied. If the cross-sectional area of the overflow glue groove 13 is not larger than that of the sealing groove 12, it is easy to cause the situation that the overflow glue groove 13 cannot accommodate all the glue in the sealing groove 12, and in some cases, the glue may overflow from the glue groove, affecting other components.

[0039] Thus, by setting the glue tank as the interconnected sealing groove 12 and overflow glue groove 13, when the glue overflows from the sealing groove 12, it can flow into the overflow glue groove 13. The cross-sectional area of the overflow glue groove 13 is larger than that of the sealing groove 12. The overflow glue groove 13 can accommodate the glue overflowing from the sealing groove 12, preventing the glue from flowing to other components and affecting the safety of the battery pack, improving the problem of glue overflow. Part of the glue can flow along the edge of the tray side beam 11 into the inner side of the tray side beam 11. In this way, the bonding strength can be increased, and the same bonding strength can be achieved with a reduced amount of glue used.

[0040] Referring to Figure 7 As shown, in the first direction, the dimension of the sealing groove 12 is L1, and the dimension of the overflow glue groove 13 is L2. L1 and L2 satisfy the relationship: L1 > L2, that is, in the first direction, the dimension of the sealing groove 12 is larger than that of the overflow glue groove 13.

[0041] And, in the second direction, the dimension of the sealing groove 12 is H1, and the dimension of the overflow glue groove 13 is H2. H1 and H2 satisfy the relationship: H1 < H2, that is, in the second direction, the dimension of the sealing groove 12 is smaller than that of the overflow glue groove 13.

[0042] Wherein, the first direction and the second direction are perpendicular to each other. In this embodiment, the first direction can be the left - right direction, and the second direction is the up - down direction. In this way, the dimension L1 of the sealing groove 12 is the width of the sealing groove 12, the dimension L2 of the overflow glue groove 13 is the width of the overflow glue groove 13, the dimension H1 of the sealing groove 12 is the height of the sealing groove 12, and the dimension H2 of the overflow glue groove 13 is the height of the overflow glue groove 13. The cross - sectional area of the sealing groove 12 is the product of the height and width of the sealing groove 12, that is, L1 * H1, and the cross - sectional area of the overflow glue groove 13 is the product of the height and width of the overflow glue groove 13, that is, L2 * H2. By making L1 and L2 satisfy the relationship: L1 > L2, and H1 and H2 satisfy the relationship: H1 < H2, it can satisfy L1 * H1 < L2 * H2.

[0043] Of course, in some cases, making L1 < L2, H1 < H2 or L1 < L2, H1 > H2 can also satisfy L1 * H1 < L2 * H2. However, the case of L1 < L2, H1 < H2 and satisfying L1 * H1 < L2 * H2 will make the cross - sectional area of the sealing groove 12 too small to accommodate enough glue, affecting the sealing effect.

[0044] The case of L1 < L2, H1 > H2 and satisfying L1 * H1 < L2 * H2 makes the height of the sealing groove 12 relatively high and the width relatively small, resulting in an increase in the amount of glue used. However, the area that can achieve the sealing effect is reduced even though more glue is stored below the sealing groove 12, affecting the sealing effect.

[0045] Therefore, preferably, L1 and L2 satisfy the relational expression: L1 > L2, and H1 and H2 satisfy the relational expression: H1 < H2, which can satisfy L1 * H1 < L2 * H2, making the cross-sectional area of the glue overflow groove 13 larger than that of the sealing groove 12. The glue overflow groove 13 can accommodate more overflowing glue, prevent the glue from flowing to other components and affecting the safety of the battery pack, and reduce the usage amount of the glue.

[0046] Referring to Figure 7 As shown, L1 and H1 respectively satisfy the relational expressions: 6 mm < L1 < 30 mm, H1 > 0.1 mm, and L2 and H2 respectively satisfy the relational expressions: L2 > 0.5 mm, 1 mm < H2 < 5 mm.

[0047] Specifically, currently, the width of the tray side beam 11 is generally designed to be about 30 mm. Therefore, L1 should be less than 30 mm. The width of the sealing groove 12 is less than that of the tray side beam 11 to prevent the glue from overflowing the tray side beam 11. Experimental data shows that the sealing effect is better when the width of the sealing area of the tray side beam 11 is greater than 6 mm. Therefore, H1 should be greater than 0.1 mm. Considering the requirements of weight reduction and light weight, the thickness of the tray side beam 11 should not be greater than 5 mm to reduce the overall weight and cost.

[0048] Preferably, L1 is 7 mm, H1 is 1 mm, L2 is 2.5 mm, and H2 is 4 mm. The glue groove within the above size range has good sealing performance and can meet the light-weight requirements.

[0049] Referring to Figures 2-7 As shown, in the second direction, the bottom of the sealing groove 12 is higher than that of the glue overflow groove 13. In this way, the glue in the sealing groove 12 can flow into the glue overflow groove 13 under the action of gravity, improving the glue overflow problem. Moreover, the bottom of the glue overflow groove 13 is arc-shaped or semi-circular, which is convenient for collecting the overflowing glue.

[0050] Referring to Figures 2-7 As shown, a first arc edge 14 is provided at the connection between the sealing groove 12 and the glue overflow groove 13. By setting the first arc edge 14, the glue overflowing from the sealing groove 12 can smoothly flow into the glue overflow groove 13, improving the glue overflow problem. A limiting protrusion is provided on the side of the sealing groove 12 away from the glue overflow groove 13 to block the glue from passing through and ensure that the glue flows into the glue overflow groove 13 along the first arc edge 14.

[0051] Moreover, a second arc edge is provided between the sealing groove 12 and the edge of the tray side beam 11. The second arc edge can guide the glue overflowing from the sealing groove 12 to flow along the edge of the tray side beam 11 into the inside of the tray side beam 11. In this way, in addition to the glue on the tray side beam 11 playing an adhesive role, glue is also applied to the inside of the tray side beam 11, which can increase the adhesive strength and improve the overall mode. And the overflowing glue can increase the adhesive strength, and the same or stronger adhesive strength can be achieved with a reduced usage amount of the glue.

[0052] The battery pack according to the second aspect embodiment of the present utility model includes: a tray 10, a cover plate 20, and a battery module.

[0053] A tray side beam 11 of the battery pack is provided at the edge of the tray 10. The cover plate 20 covers the upper end surface of the tray 10. An accommodation space is formed between the tray 10 and the cover plate 20, and the battery module is disposed in the accommodation space.

[0054] Referring to Figures 5-6 As shown, the battery pack further includes: a fastener 30. The fastener 30 passes through the cover plate 20 and is fixed on the tray 10. The glue overflow groove 13 is disposed relatively closer to the fastener 30 than the sealing groove 12. That is to say, the tray 10 and the cover plate 20 are fixedly connected by the fastener 30 passing through the cover plate 20 and the tray 10. The position of the fastener 30 is an area where glue is likely to overflow. The glue overflow groove 13 is relatively closer to the fastener 30 than the sealing groove 12. When the fastener 30 fixes the tray 10 and the cover plate 20, the glue is squeezed. Part of the glue remains in the sealing groove 12 to play a sealing role, part of the glue remains in the glue overflow groove 13 and does not flow out from the screw hole, and part of the glue flows along the second arc edge into the inner side of the tray side beam 11, effectively improving the problem of glue overflow.

[0055] Wherein, the fastener 30 can be a screw.

[0056] The electrical equipment according to the third aspect embodiment of the present utility model includes a battery pack.

[0057] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0058] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0059] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery pack tray side beam, characterized in that: A glue groove is provided at the upper end of the battery pack tray side beam (11), the glue groove comprising a sealing groove (12) and a glue overflow groove (13) arranged at intervals, the sealing groove (12) and the glue overflow groove (13) being interconnected, and the cross-sectional area of ​​the glue overflow groove (13) is larger than the cross-sectional area of ​​the sealing groove (12).

2. The battery pack tray side beam according to claim 1, characterized in that: In the first direction, the size of the sealing groove (12) is L1, the size of the overflow groove (13) is L2, and L1 and L2 satisfy the relationship: L1>L2; and, In the second direction, the size of the sealing groove (12) is H1, the size of the overflow groove (13) is H2, and H1 and H2 satisfy the relationship: H1<H2; The first direction and the second direction are perpendicular to each other.

3. The battery pack tray side beam according to claim 2, characterized in that: The L1 and the H1 respectively satisfy the relationship: 6mm<L1<30mm, H1>0.1mm.

4. The battery pack tray side beam according to claim 2, characterized in that: The L2 and the H2 respectively satisfy the relationship: L2>0.5mm, 1mm<H2<5mm.

5. The battery pack tray side beam according to claim 2, characterized in that: In the second direction, the bottom of the sealing groove (12) is higher than the bottom of the glue overflow groove (13).

6. The battery pack tray side beam according to claim 1, characterized in that: The bottom of the glue overflow groove (13) is arc-shaped or semicircular.

7. The battery pack tray side beam according to claim 1, characterized in that: A first arc edge (14) is provided at the connection between the sealing groove (12) and the glue overflow groove (13); and, A second arc edge is provided between the sealing groove (12) and the edge of the pallet side beam (11).

8. A battery pack, characterized in that: include: A tray (10), the edge of the tray (10) being provided with a tray side beam (11) of a battery pack according to any one of claims 1 to 7; a cover plate (20), the cover plate (20) covering the upper end surface of the tray (10), a receiving space being formed between the tray (10) and the cover plate (20); A battery module is disposed in the accommodating space.

9. The battery pack according to claim 8, characterized in that: Also includes: A fastener (30), the fastener (30) passing through the cover plate (20) and being fixed on the tray (10), the glue overflow groove (13) being arranged relative to the sealing groove (12) and close to the fastener (30).

10. An electrical device, characterized in that: include: The battery pack according to any one of claims 8 to 9.

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