Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment, the battery pack comprises a box body, a battery pack and a wire harness fixing assembly, a containing cavity is arranged in the box body, and the battery pack and the wire harness fixing assembly are both arranged in the containing cavity. The wire harness fixing assembly comprises a ribbon, a fixing seat and a bonding part, the fixing seat is provided with a containing groove, the bonding part is arranged in the containing groove and connected with the battery pack or the box body, and the ribbon is connected with the fixing seat and used for fixing the wire harness. Therefore, the fixing of the wire harness is indirectly realized through the bonding of the bonding part and the battery pack or the box body, and the bonding part is high in bonding capacity, weather resistance and tensile strength and can bear a relatively large load, so that the reliability of fixing the wire harness is effectively improved, and the normal work of the battery pack in the box body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack wire harness fixing, in particular to a battery pack and an electrical equipment using the same. Background Art

[0002] With the development and progress of the new energy vehicle industry, the development and optimization of new energy power batteries have been continuously strengthened. In the design of a power battery pack, the wire harness needs to be fixed in the box body.

[0003] Currently, the adopted method is to use self-adhesive cable ties to fix the wire harness on the side plate of the box body. Specifically: the self-adhesive cable tie fixes the wire harness, and then the self-adhesive cable tie is fixed on the side plate through double-sided tape. Since the weather resistance of the double-sided tape is poor, the reliability of the method of fixing the wire harness with self-adhesive cable ties is difficult to guarantee, which is likely to affect the long-term stable operation of the box body. Summary of the Utility Model

[0004] In view of this, the utility model provides a battery pack and an electrical equipment using the same, so as to at least solve the problems that the reliability of the current wire harness fixing method in the box body is low and it is easy to affect the normal operation of the battery pack in the box body.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] The utility model provides a battery pack, which includes: a box body, in which a receiving cavity is provided; a battery pack, connected to the box body and arranged in the receiving cavity; a wire harness fixing assembly, arranged in the receiving cavity; the wire harness fixing assembly includes: a fixing seat, in which a receiving groove is provided; an adhesive part, arranged in the receiving groove and connected to the battery pack or the box body; a cable tie, connected to the fixing seat, and the cable tie is used for fixing the wire harness.

[0007] Optionally, the wire harness fixing assembly further includes: a fixing member, the wire harness fixing assembly has a first direction, the fixing member is connected to the fixing seat and is opposite to the orientation of the receiving groove along the first direction, and the cable tie is connected to the fixing seat through the fixing member.

[0008] Optionally, the fixing seat further has a second direction and a third direction intersecting with the first direction, the fixing member is provided with a through hole along the second direction, and / or the fixing member is provided with a through hole along the third direction, and the cable tie is used for at least partially passing through the through hole to be connected to the fixing member.

[0009] Optionally, the fixing seat has a side surface, the side surface is opposite to the orientation of the receiving groove along the first direction; the wire harness fixing assembly further includes: a reinforcing rib, respectively connected to the side surface and the fixing member.

[0010] Optionally, when the adhesive portion is connected to the box body, the box body includes a bottom plate and multiple side plates, the multiple side plates are connected to the bottom plate and enclose the accommodating cavity, and the adhesive portion is connected to the side plates; when the adhesive portion is connected to the battery pack, the battery pack includes multiple battery cells and a connecting plate connecting the multiple battery cells, and the adhesive portion is connected to the connecting plate.

[0011] Optionally, the fixing seat includes a fixing portion and a plurality of accommodating plates; the fixing member and the accommodating plates are respectively connected to the fixing portion, and the fixing member and the accommodating plates are arranged opposite to each other along the first direction, and the plurality of accommodating plates and the fixing portion are enclosed to form the accommodating groove; the bonding portion is respectively connected to the fixing portion and the accommodating plates.

[0012] Optionally, the fixing seat also has a second direction intersecting with the first direction, and an opening is penetrated through the accommodating plate opposite to the second direction, the opening is connected to the accommodating groove, and the opening is arranged at one end of the accommodating plate away from the fixing member along the first direction.

[0013] Optionally, along the first direction, the height dimension of the opening does not exceed one third of the height dimension of the accommodating plate; and / or, along the first direction, the cross-section of the opening is semicircular.

[0014] Optionally, the bonding portion is a structural adhesive, and the thickness of the structural adhesive in the first direction is not greater than 1 mm.

[0015] The utility model also provides an electrical device, comprising the battery pack described in any one of the above items.

[0016] Compared with the prior art, the battery pack and electrical equipment described in the utility model have the following advantages:

[0017] The battery pack of the utility model includes a case, a battery pack and a wiring harness fixing assembly. A accommodating cavity is provided in the case, and the battery pack and the wiring harness fixing assembly are both arranged in the accommodating cavity. The wiring harness fixing assembly includes a cable tie, a fixing seat and an adhesive portion. A accommodating groove is provided on the fixing seat. The adhesive portion is arranged in the accommodating groove and is connected to the battery pack or the case. The cable tie is connected to the fixing seat to fix the wiring harness. Thus, the wiring harness is indirectly fixed by bonding the adhesive portion to the battery pack or the case. The adhesive portion has strong bonding ability, strong weather resistance, and high tensile strength, and can withstand large loads, thereby effectively improving the reliability of wiring harness fixation and ensuring the normal operation of the battery pack in the case.

[0018] The electrical equipment of the present invention has the same or similar advantages as the prior art and the aforementioned battery pack, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0020] Figure 1 is a schematic diagram of a battery pack with the cover removed in an embodiment of the present utility model;

[0021] Figure 2 is a partial enlarged view of the side plate part of the inner frame of the battery pack in an embodiment of the present utility model;

[0022] Figure 3 is a schematic diagram of the connection between a wire harness fixing assembly and a connecting plate in an embodiment of the present utility model;

[0023] Figure 4 is a schematic diagram of a wire harness fixing assembly in an embodiment of the present utility model;

[0024] Figure 5 is a schematic diagram of the accommodating groove part in a wire harness fixing assembly in an embodiment of the present utility model;

[0025] Figure 6 is a side view of a wire harness fixing assembly in an embodiment of the present utility model;

[0026] Figure 7 is a schematic cross-sectional view of a fixing seat and a fixing member along the first direction in an embodiment of the present utility model.

[0027] Explanation of reference numerals:

[0028] 10 - battery pack, 100 - wire harness fixing assembly;

[0029] 200 - box body, 201 - accommodating cavity, 202 - side plate;

[0030] 300 - battery pack, 301 - battery cell, 302 - connecting plate;

[0031] 1 - cable tie, 11 - movable part, 12 - locking part;

[0032] 2 - fixing seat, 21 - accommodating groove, 210 - bonding part, 22 - fixing part, 23 - accommodating plate, 24 - opening, 25 - side;

[0033] 3 - fixing member, 31 - mounting plate, 32 - through hole, 321 - first through hole, 322 - second through hole;

[0034] 5 - reinforcing rib, 6 - wire harness. Detailed implementation manners

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0036] The terms "first", "second", etc. in the description and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0037] The term "parallel" in the description and claims of the present utility model includes not only the case of absolute parallelism, but also the case of approximately parallelism commonly recognized in engineering. For example, "parallel" means a state where the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is -1° to 1°. At the same time, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximately perpendicularity commonly recognized in engineering. For example, "perpendicular" means a state where the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°. Equal distance or equal angle includes not only the case of absolute equality, but also the case of approximately equality commonly recognized in engineering, that is, a certain error can exist, such as a state where the tolerance range is -1% to 1%.

[0038] It should be understood that the "one embodiment" mentioned throughout the description means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present utility model. Therefore, the "in one embodiment" that appears throughout the description does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner.

[0039] The following will introduce in detail a battery pack and an electrical device provided by the present utility model by listing specific embodiments.

[0040] Refer to Figures 1 to 5, a battery pack 10 provided by the present utility model includes: a wire harness fixing assembly 100, a box body 200, and a battery pack 300; an accommodation cavity 201 is provided in the box body 200, the battery pack 300 is connected to the box body 200 and is arranged in the accommodation cavity 201; the wire harness fixing assembly 100 includes: a cable tie 1, a fixing seat 2, and a bonding part 210, the fixing seat 2 is provided with an accommodation groove 21; the bonding part 210 is arranged in the accommodation groove 21 and is connected to the battery pack 300 or the box body 200; the cable tie 1 is connected to the fixing seat 2 for fixing the wire harness.

[0041] Specifically, the box body 200 includes a box body side plate 202 and a bottom plate, the box body side plate 202 and the bottom plate enclose to form the accommodation cavity 201. When the bonding part 210 in the wire harness fixing assembly 100 is connected to the box body 200, the bonding part 210 can be connected to the side plate 202 to fix some wire harnesses inside the box body 200. As Figure 1 and Figure 2 shown, in addition to the wire harness fixing assembly 100 and the box body 200, the battery pack 10 further includes a cover plate and at least one group of battery packs 300. At least one group of battery packs 300 is placed on the bottom plate and arranged in parallel in the accommodation cavity 201. Each group of battery packs 300 is composed of a plurality of battery cells 301 connected in series or in parallel. The charge and discharge function of the battery pack 10 is essentially the charge and discharge of the battery pack 300 inside it. The cover plate is arranged on the upper part of the box body 200 and is fixedly connected to the box body 200. The cover plate is used to cover the accommodation cavity 201. After the cover plate covers the accommodation cavity 201, it can protect the battery pack 300 in the accommodation cavity 201 and prevent external moisture, dust, etc. from entering the accommodation cavity 201 and affecting the performance of the battery pack 300.

[0042] As Figure 3 shown, the battery pack 300 further includes a connecting plate 302 for connecting a plurality of battery cells 301. When the bonding part 210 in the wire harness fixing assembly 100 is connected to the battery pack 300, the bonding part 210 can be connected to the connecting plate 302 to fix some wire harnesses inside the box body 200, so as to facilitate the electrical connection between the battery pack 300 and the BMS (Battery Management System) and maintain the normal operation of the battery pack 300. In some embodiments, a frame for installing and fixing the battery pack 300 is provided in the box body 200. The frame is connected to the bottom plate of the box body 200 and is located in the accommodation cavity 201. The connecting plate 302 can be a frame side plate. In this case, the wire harness fixing assembly 100 is connected to the outer wall surface of the frame side plate. In other embodiments, the number of wire harness fixing assemblies 100 can be multiple. One part of the wire harness fixing assemblies 100 is connected to the side plate 202 of the box body 200, and the other part of the wire harness fixing assemblies 100 is connected to the connecting plate 302 to flexibly meet the fixing requirements of the wire harness.

[0043] In addition, the connecting plate 302 or the side plate 202 can adopt a flat plate structure made of plastic material or a flat plate structure made of metal or alloy material. For example, an aluminum alloy plate can be used. When the bonding portion 210 is connected to the connecting plate 302, it is necessary to set the dyne value of the connecting plate 302 to be not less than 36 dyn / cm. When the bonding portion 210 is connected to the side plate 202, it is necessary to set the dyne value of the side plate 202 to be not less than 36 dyn / cm to improve the bonding effect between the bonding portion 210 and the connecting plate 302 or the side plate 202. Among them, the dyne value refers to the surface tension value measured by a dyne pen on the film, and it is also the decisive standard for the surface treatment of components. Generally, the higher the dyne value, the easier it is for the component to be colored or adhered.

[0044] A receiving groove 21 is formed on the fixing seat 2, and a bonding portion 210 is arranged in the receiving groove 21. Through the bonding portion 210, the fixing seat 2 can be connected to the connecting plate 302 of the battery pack 300 or the side plate 202 of the box body 200, so as to realize the connection and fixation of the wire harness fixing assembly 100 and the connecting plate 302. The tie strap 1 is connected to the fixing seat 2 and is used for threading and fixing the wire harness 6 in the box body 200. During the threading process of the wire harness 6, it is not easy to interfere with the connecting plate 302 or the side plate 202, which is more helpful to ensure the smooth threading of the wire harness. Further, as Figure 5 shown, the receiving groove 21 can be a large-volume groove or can be composed of multiple small-volume grooves together. Figure 5 FIG. shows a schematic diagram of the receiving groove 21 being a rectangular groove. In other embodiments, the receiving groove 21 can also be a square groove, a circular groove, an oval groove or any irregular shape structure, and the embodiments of the present invention do not limit this.

[0045] Optionally, the wire harness fixing assembly 100 further includes: a fixing member 3. The wire harness fixing assembly 100 has a first direction Z. The fixing member 3 is connected to the fixing seat 2 and is opposite to the orientation of the receiving groove 21 along the first direction Z. The tie strap 1 is connected to the fixing seat 2 through the fixing member 3.

[0046] Specifically, the first direction Z is the thickness direction of the fixing seat 2. The fixing member 3 is arranged on the fixing seat 2 and is connected to the fixing seat 2. The fixing member 3 and the fixing seat 2 can be assembled and connected or welded by two independent components, or the fixing member 3 and the fixing seat 2 can also be a structure formed by integral processing. Among them, the fixing member 3 is opposite to the orientation of the receiving groove 21 along the first direction Z.

[0047] Optionally, the bonding portion 210 is a structural adhesive, and the thickness of the structural adhesive in the first direction Z is not greater than 1 mm.

[0048] Specifically, in this embodiment, the bonding part 210 can be made of structural adhesive. Structural adhesive is a special adhesive with high strength and large compressive strength, capable of withstanding large loads. It also has the characteristics of aging resistance, fatigue resistance, and corrosion resistance. At the same time, the curing time of the structural adhesive at room temperature is no more than 60 s, which can be cured quickly to meet the installation requirements of the production line tie 1.

[0049] In the traditional method of fixing wire harnesses using self-adhesive ties through double-sided tape, the bonding size of the double-sided tape is approximately: 26 mm × 26 mm, and the total area is approximately: 676 mm2. The adhesive force of the double-sided tape at room temperature is approximately between 100 N and 200 N. Under the condition of unchanged area, the adhesive force of the structural adhesive after curing at room temperature in this embodiment is approximately 1014 N (F = 1.5 N / mm2 × 676 mm2). Obviously, the adhesive force has been greatly improved. Even considering the decrease in bonding performance caused by the aging of the structural adhesive, it can effectively meet the requirements of fixing wire harnesses.

[0050] Table 1 below shows the test values of the bonding strength of the structural adhesive after curing for 1 hour. The bonding substrate of the structural adhesive is a metal sprayed plate PA6 + GF30 sheet, the bonding area is 12.5 mm * 25 mm, a tensile testing machine is used to test the tensile force, and the tensile rate is 5 mm / min. The test reference standard is GB / T 7142-2008: Determination of tensile shear strength of adhesives (rigid material to rigid material). From the following table, the comparison of the bonding tensile forces of structural adhesives with different thicknesses can be seen:

[0051]

[0052] When the bonding part 210 uses structural adhesive, the requirement for the structural adhesive is that its bonding tensile strength is not less than 1.5 Mpa. As can be seen from the above table, in the thickness range of 0.1 mm to 2.1 mm, the tensile strength and tensile force of the structural adhesive after curing for 1 hour can meet the requirements of wire harness fixing. Therefore, by bonding and fixing the fixing seat 2 to the connecting plate 302 or the side plate 202 with structural adhesive, the connection reliability between the fixing seat 2 and the connecting plate 302 or the side plate 202 can be ensured, and the phenomenon of the fixing seat 2 falling off can be avoided. Further, as can be seen from the above table, when the thickness of the structural adhesive is greater than 1 mm, the tensile force of the structural adhesive drops to nearly 500 N after curing for 1 hour. If the tensile force of the structural adhesive is too small, it will also affect the connection reliability between the fixing seat 2 and the connecting plate 302 or the side plate 202. Therefore, in the embodiment of the present invention, the thickness of the structural adhesive is set not to be greater than 1 mm. In actual application, the thickness of the structural adhesive can be set to 0.5 mm, 0.8 mm, or 1 mm to ensure the tensile strength and tensile force of the structural adhesive, meet the requirements of wire harness fixing, and at the same time help control the material cost and avoid waste of the structural adhesive.

[0053] The battery pack 10 of the embodiment of the present utility model includes a wire harness fixing assembly 100. The wire harness fixing assembly 100 includes a cable tie 1, a fixing seat 2, and an adhesive part 210. A receiving groove 21 is formed on the fixing seat 2, and the adhesive part 210 is arranged in the receiving groove 21. The adhesive part 210 is connected to the battery pack 300 or the box body 200. The cable tie 1 is connected to the fixing seat 2, and the wire harness 6 is threaded through the cable tie 1, thereby realizing the fixing of the wire harness 6 on the battery pack 300 or the box body 200. Compared with the method of using a self-adhesive cable tie to fix the wire harness 6 in the prior art, the present utility model indirectly realizes the fixing of the wire harness 6 through the adhesion between the adhesive part 210 and the battery pack 300 or the box body 200. The adhesive part 210 has strong adhesion, strong weather resistance, and large tensile strength, and can bear a large load, thereby effectively improving the reliability of wire harness fixing.

[0054] Optionally, the fixing assembly 101 further includes a second direction X and a third direction Y that intersect with the first direction Z. The fixing member 3 is provided with a through hole 32 along the second direction X, and / or the fixing member 3 is provided with a through hole 32 along the third direction Y. The cable tie 1 is used to at least partially pass through the through hole 32 and connect with the fixing member 3.

[0055] Specifically, both the second direction X and the third direction Y are perpendicular to the first direction Z, and the second direction X is perpendicular to the third direction Y. The through hole 32 can extend along the second direction X, or can extend along the third direction Y. The through hole 32 can also be two or more. One part extends along the second direction X, and the other part extends along the third direction Y.

[0056] The cable tie 1 is threaded through the through hole 32. The through hole 32 can play a role in limiting the cable tie 1, making the cable tie 1 not easily separated from the fixing member 3, which helps to improve the installation reliability of the cable tie 1 on the fixing member 3. Figure 4 FIG. shows a schematic diagram of the fixing member 3 having a rectangular structure. Four corner parts of the fixing member 3 are connected to the fixing seat 2, and through holes 32 for threading the cable tie 1 are formed between other parts of the fixing member 3 and the fixing seat 2. Of course, the fixing member 3 can also be in other structural forms such as circular, triangular, polygonal, etc. The embodiment of the present utility model does not limit this. In practical applications, the layout direction of the through holes 32 can be set according to the threading direction of the wire harness to control the threading direction of the cable tie 1 through the through holes 32, facilitating the threading of the wire harness.

[0057] In addition, the through hole 32 can also be any shape such as circular, arc-shaped, trapezoidal, etc. Figure 6 FIG. shows a schematic diagram of a rectangular through hole 32. The embodiment of the present utility model does not limit the specific shape and structure of the through hole 32. However, it should be noted that the aperture of the through hole 32 needs to be larger than the width of the cable tie 1 to ensure that the cable tie 1 can smoothly penetrate into the through hole 32.

[0058] Optionally, referring to Figures 4 to 7 , the through holes 32 include a first through hole 321 and a second through hole 322. The first through hole 321 extends along the second direction X, the second through hole 322 extends along the third direction Y, and the first through hole 321 and the second through hole 322 communicate with each other.

[0059] Specifically, as shown in Figure 7 , the fixing member 3 includes a plurality of mounting plates 31. The plurality of mounting plates 31 are arranged along the circumferential direction of the fixing member 3, and the mounting plates 31 extend in the direction away from the cable tie 1 along the first direction Z. The width of the mounting plate 31 gradually increases from the fixing member 3 to the fixing seat 2, which can ensure the strength of the entire fixing member 3. A plurality of through holes 32 can be formed between the plurality of mounting plates 31 and the fixing seat 2. As shown in Figure 4 , the plurality of through holes 32 include a first through hole 321 and a second through hole 322. The first through hole 321 extends along the second direction X, the second through hole 322 extends along the third direction Y, and the first through hole 321 and the second through hole 322 communicate with each other. The wire harness can pass through the first through hole 321 or the second through hole 322, thereby effectively improving the flexibility of the wire harness passing.

[0060] Optionally, referring to Figures 4 to 7 , the fixing seat 2 has a side surface 25, and the side surface 25 faces away from the accommodating groove 21 along the first direction Z; the wire harness fixing assembly 100 further includes a reinforcing rib 5; the reinforcing rib 5 is respectively connected to the side surface 25 and the fixing member 3.

[0061] Specifically, as shown in Figure 4 , Figure 6 and Figure 7 , the side surface 25 faces away from the accommodating groove 21 along the first direction Z. One surface of the reinforcing rib 5 is connected to the side surface 25, and the other surface of the reinforcing rib 5 is connected to the fixing member 3, specifically, it can be connected to the mounting plate 31. The end of the reinforcing rib 5 away from the mounting plate 31 extends to the edge of the fixing seat 2 and is connected to the fixing seat 2. In some embodiments, the reinforcing rib 5 can be a split structure with the fixing seat 2 and the fixing member 3. The connection methods of the reinforcing rib 5 with the fixing seat 2 and the fixing member 3 include but are not limited to welding, assembly connection, clamping, adhesive connection, etc. In other embodiments, the reinforcing rib 5 can be an integral structure with the fixing seat 2 and the fixing member 3, and is processed by an integral forming process, and its connection is more reliable, which is more helpful for controlling the processing cost of the wire harness fixing assembly 100 and improving the processing efficiency.

[0062] In addition, the number of the reinforcing ribs 5 can be one, two or more. To ensure the strengthening effect of the reinforcing rib 5 on the fixing seat 2 and the fixing member 3, in the embodiment of the present invention, a plurality of reinforcing ribs 5 are provided. The plurality of reinforcing ribs 5 are arranged at intervals along the circumferential direction of the fixing member 3 and are evenly arranged to effectively improve the strength and stiffness of the fixing seat 2 and enhance the structural stability of the fixing seat 2.Figure 4 and Figure 6 The schematic diagram of the fixing seat 2 and the fixing part 3 as a rectangular structure is shown in the figure. The wiring harness fixing assembly 100 includes four reinforcing ribs 5, which are respectively arranged at the four corners of the fixing part 3 and respectively connected to the mounting plate 31. The four reinforcing ribs 5 extend from the four corners of the fixing part 3 to the four corners of the fixing seat 2. The four reinforcing ribs 5 are arranged diagonally on the fixing seat 2, which can effectively increase the arrangement area of ​​the reinforcing ribs 5, and is more helpful to improve the strength and stiffness of the fixing seat 2, and avoid deformation of the fixing seat 2 under the condition of long-term injection of glue. At the same time, Figure 6 As shown, for each reinforcing rib 5, the thickness of the reinforcing rib 5 in the first direction Z decreases along the direction of the reinforcing rib 5 away from the mounting plate 31, so that each reinforcing rib 5 forms an inclined structure. The inclined structure helps to disperse the force transmitted to the reinforcing rib 5 through the fixing member 3 when the cable tie 1 is pulled, avoids stress concentration, and further helps to ensure the reliability of the connection between the fixing member 3 and the fixing seat 2.

[0063] Optionally, refer to Figure 4 and Figure 6 The cable tie 1 has a movable portion 11 and a locking portion 12 at both ends. At least a portion of the movable portion 11 is penetrated through the penetration hole 32 , and the movable portion 11 penetrated through the penetration hole 32 is fixedly connected to the locking portion 12 .

[0064] Specifically, if Figure 6 As shown, the cable tie 1 has a movable portion 11 and a locking portion 12, at least part of the movable portion 11 passes through the through hole 32, and the movable portion 11 is fixedly connected with the locking portion 12 after passing through the through hole 32, so that the cable tie 1 has an annular structure. The cable tie 1 with an annular structure has the ability to constrain and fix the wire harness, and the wire harness is passed through the cable tie 1 and is fixed on the connecting plate 302 or the side plate 202. In one embodiment, a serrated structure can be provided on the surface of the portion where the movable portion 11 is fixedly connected with the locking portion 12, a through hole is provided in the locking portion 12, and a serrated structure is provided on the inner wall of the through hole, the movable portion 11 is passed through the through hole, and the serrated structure on the surface of the movable portion 11 cooperates with the serrated structure on the inner wall of the through hole, so as to realize the locking and fixing of the movable portion 11 and the locking portion 12.

[0065] Optionally, refer to Figures 4 to 6 The fixing seat 2 includes a fixing portion 22 and a plurality of accommodating plates 23. The fixing member 3 and the accommodating plates 23 are respectively connected to the fixing portion 22, and the fixing member 3 and the accommodating plates 23 are arranged relatively to each other along the first direction Z. The plurality of accommodating plates 23 and the fixing portion 22 are enclosed to form an accommodating groove 21; the bonding portion 210 is respectively connected to the fixing portion 22 and the accommodating plates 23.

[0066] Specifically, a plurality of accommodating plates 23 are arranged on the fixing portion 22 along the circumference of the fixing portion 22, and the plurality of accommodating plates 23 are fixedly connected to the fixing portion 22, wherein the fixing seat 2 can be an integrally formed structure, and the accommodating plates 23 and the fixing portion 22 belong to different parts of the fixing seat 2, and the accommodating plates 23 and the fixing portion 22 can also be assembled, connected or welded by two independent parts. In order to avoid the occurrence of a gap between the accommodating plates 23 and the fixing portion 22 to cause glue leakage, the embodiment of the utility model preferably uses an integrally structured fixing seat 2. The plurality of accommodating plates 23 extend in a first direction Z in a direction away from the fixing member 3, and the plurality of accommodating plates 23 and the fixing portion 22 enclose a accommodating groove 21 for accommodating the adhesive portion 210. The accommodating groove 21 formed by the fixing seat 2 of this structure has the largest volume, and can accommodate more adhesive portions 210, further improving the fixing effect of the fixing seat 2 and the battery pack 300 or the box 200.

[0067] In the embodiment of the utility model, the size of the accommodating plate 23 along the first direction Z determines the groove depth of the accommodating groove 21 on the fixing seat 2, and the groove depth affects the capacity of the bonding portion 210 in the accommodating groove 21. The size of the accommodating plate 23 along the second direction X and the size along the third direction Y determine the area of ​​the bonding surface of the accommodating groove 21 on the fixing seat 2 for bonding with the connecting plate 302 or the side plate 202. The larger the area of ​​the bonding surface, the better the bonding effect between the fixing seat 2 and the connecting plate 302 or the side plate 202. Therefore, the accommodating plate 23 is set. The size along the first direction Z is smaller than the size of the receiving plate 23 along the second direction X and the size along the third direction Y. For example, the size of the receiving plate 23 along the first direction Z can be set to 3 cm to 5 cm, and the size of the receiving plate 23 along the second direction X and the size along the third direction Y can be set to 10 cm to 15 cm, so that the area of ​​the bonding surface of the receiving groove 21 for bonding with the connecting plate 302 or the side plate 202 is larger, ensuring the bonding effect, and the groove depth is moderate to avoid wasting the bonding portion 210.

[0068] Optionally, refer to Figure 5 and Figure 6 An opening 24 is penetrated through the receiving plate 23 opposite to each other along the second direction X. The opening 24 is communicated with the receiving groove 21 . The opening 24 is provided at one end of the receiving plate 23 away from the fixing member 3 along the first direction Z.

[0069] Specifically, an opening 24 is passed through the receiving plate 23 opposite to each other along the second direction X, and the opening 24 is connected to the receiving groove 21. The amount of the adhesive portion 210 injected into the receiving groove 21 can be observed through the opening 24, so that personnel can stop injecting glue in time. At the same time, the adhesive portion 210 in the receiving groove 21 can overflow through the opening 24 to avoid excessive adhesive portion 210 in the receiving groove 21, so that the fixing seat 2 can be fully in contact with the connecting plate 302 or the side plate 202, thereby improving the bonding and fixing effect. It should be noted that the flowability of the adhesive portion 210 is poor, and a small amount of the adhesive portion 210 will overflow from the opening 24, and a large amount of the adhesive portion 210 will still exist in the receiving groove 21 for bonding the fixing seat 2 to the connecting plate 302 or the side plate 202. The opening 24 can be set at any position of the receiving plate 23. In the embodiment of the utility model, Figure 5 and Figure 6 As shown, the opening 24 is arranged at the edge of the receiving plate 23 away from the fixing member 3 along the first direction Z, which is equivalent to forming a notch at the edge of the receiving plate 23 close to the connecting plate 302 or the side plate 202. When the amount of the adhesive portion 210 in the receiving groove 21 reaches the position of the opening 24, the adhesive portion 210 will overflow, thereby effectively avoiding the waste of the adhesive portion 210. The opening 24 can be any shape such as semicircular, elliptical, square, trapezoidal, etc., which is not limited by the embodiment of the utility model.

[0070] Optionally, refer to Figure 5 and Figure 6 , along the first direction Z, the height dimension of the opening 24 does not exceed one third of the height dimension of the accommodating plate 23; and / or, along the cross section of the first direction Z, the cross section of the opening 24 is semicircular.

[0071] Specifically, in one embodiment, along the first direction Z, the height dimension of the opening 24 does not exceed one third of the height dimension of the receiving plate 23, that is, along the first direction Z, the capacity of the adhesive portion 210 in the receiving groove 21 occupies at least two thirds of the height of the receiving plate 23, thereby ensuring that the amount of glue in the receiving groove 21 is sufficient and preventing the adhesive portion 210 from overflowing from the opening 24 too early, causing waste of the adhesive portion 210. In another embodiment, Figure 5 and Figure 6 As shown, the cross section of the opening 24 is a semicircular structure, and the opening 24 is arranged away from the cable tie 1, that is, the opening 24 is arranged toward the connecting plate 302 or the side plate 202. The semicircular opening 24 has no dead angle area, which can reduce the remaining adhesive portion 210 and prevent the adhesive portion 210 from blocking the opening 24. In another embodiment, along the first direction Z, the height dimension of the opening 24 does not exceed one-third of the height dimension of the receiving plate 23, and the opening 24 is a semicircular structure arranged toward the connecting plate 302 or the side plate 202, so that the amount of glue in the receiving groove 21 can be guaranteed to be sufficient, and the adhesive portion 210 can be prevented from blocking the opening 24.

[0072] The present utility model further provides an electrical equipment, which comprises a box body and the battery pack 10 described in any one of the foregoing items.

[0073] Specifically, the electrical equipment includes, but is not limited to, electric vehicles, hybrid vehicles, charging stations and some energy storage systems. The electrical equipment is installed with the battery pack 10 of any one of the foregoing embodiments. The battery pack 10 has a reliable wire harness fixing method, which can maintain the normal operation of the battery pack in the box body, thereby improving the use reliability of the electrical equipment.

[0074] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the said element.

[0075] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery pack, characterized in that: The battery pack comprises: A box body (200), wherein a receiving chamber (201) is provided in the box body (200); A battery pack (300) connected to the box (200) and disposed in the accommodating cavity (201); A wire harness fixing assembly (100) is arranged in the accommodating cavity (201); The wiring harness fixing assembly (100) comprises: A fixing seat (2), wherein the fixing seat (2) is provided with a receiving groove (21); A bonding portion (210) is disposed in the receiving groove (21) and connected to the battery pack (300) or the box (200); A cable tie (1) is connected to the fixing seat (2), and the cable tie (1) is used to fix the wiring harness.

2. The battery pack according to claim 1, characterized in that: The wire harness fixing assembly (100) further comprises: The fixing member (3) has a first direction (Z), the wiring harness fixing assembly (100) is connected to the fixing seat (2), and is opposite to the direction of the receiving groove (21) along the first direction (Z), and the cable tie (1) is connected to the fixing seat (2) via the fixing member (3).

3. The battery pack according to claim 2, characterized in that: The fixing seat (2) also has a second direction (X) and a third direction (Y) intersecting the first direction (Z); the fixing member (3) is provided with a through hole (32) along the second direction (X), and / or the fixing member (3) is provided with a through hole (32) along the third direction (Y); the cable tie (1) is used to at least partially pass through the through hole (32) to be connected to the fixing member (3).

4. The battery pack according to claim 2, characterized in that: The fixing seat (2) has a side surface (25), and the side surface (25) is opposite to the direction of the receiving groove (21) along the first direction (Z); the wiring harness fixing assembly (100) further includes: The reinforcing ribs (5) are respectively connected to the side surface (25) and the fixing member (3).

5. The battery pack according to claim 1, characterized in that: When the bonding portion (210) is connected to the box body (200), the box body (200) comprises a bottom plate and a plurality of side plates (202), the plurality of side plates (202) are connected to the bottom plate and enclose the accommodating cavity (201), and the bonding portion (210) is connected to the side plates (202); When the bonding portion (210) is connected to the battery pack (300), the battery pack (300) comprises a plurality of battery cells (301) and a connecting plate (302) connecting the plurality of battery cells (301), and the bonding portion (210) is connected to the connecting plate (302).

6. The battery pack according to claim 2, characterized in that: The fixing seat (2) comprises a fixing portion (22) and a plurality of accommodating plates (23); The fixing member (3) and the accommodating plate (23) are respectively connected to the fixing portion (22), and the fixing member (3) and the accommodating plate (23) are arranged opposite to each other along the first direction (Z), and a plurality of accommodating plates (23) and the fixing portion (22) are enclosed to form the accommodating groove (21); the bonding portion (210) is respectively connected to the fixing portion (22) and the accommodating plate (23).

7. The battery pack according to claim 6, characterized in that: The fixing seat (2) also has a second direction (X) intersecting with the first direction (Z), and an opening (24) is penetrated on the accommodating plate (23) opposite to the second direction (X), and the opening (24) is connected to the accommodating groove (21), and the opening (24) is arranged at one end of the accommodating plate (23) away from the fixing member (3) along the first direction (Z).

8. The battery pack according to claim 7, characterized in that: Along the first direction (Z), the height dimension of the opening (24) does not exceed one third of the height dimension of the accommodating plate (23); And / or, in a cross section along the first direction (Z), the cross section of the opening (24) is semicircular.

9. The battery pack according to claim 2, characterized in that: The bonding portion (210) is a structural adhesive, and the thickness of the structural adhesive in the first direction (Z) is no more than 1 mm.

10. An electrical device, characterized in that: A battery pack comprising any one of claims 1 to 9.

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