Battery pack and electric device

Abstract

The utility model relates to the technical field of new energy batteries, and discloses a battery pack and a power utilization device, the battery pack comprises a box body, a cover body, a battery monomer, an electrical isolation plate, a pressing strip and a limiting strip, the box body is provided with an accommodating cavity, the battery monomer is positioned in the accommodating cavity, and the cover body covers and seals the accommodating cavity. The pressing strip is located in the concave section of the electrical isolation plate and intersects with the limiting strip. The battery is limited and fixed through the pressing strips and the limiting strips which are crossed transversely and longitudinally, so that the structure of the battery pack is more stable, the limiting strips can support the cover body, short circuit caused by contact between the cover body and the battery is avoided, and the safety of the battery pack is improved. And the pressing strips and the limiting strips which are crossed transversely and longitudinally are adopted to be matched with the adhesive layers formed at the tops of the batteries, so that the battery pack structure is reinforced, and the stability of the battery pack structure is further improved. The raised section and the recessed section of the electrical isolation plate form a fluctuating opening area, and the glue penetrates through the fluctuating opening area, so that the contact area between the electrical isolation plate and the glue is increased, and the bonding strength and the assembly strength of the electrical isolation plate are further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy battery technical field, concretely relates to a battery pack and electric device. BACKGROUND

[0002] In the process of simplifying the battery pack structure, by directly integrating the battery monomer into the battery pack, the intermediate module frame is saved, thereby improving the space utilization, reducing the production cost, and improving the energy density and endurance of the battery pack.

[0003] However, in the actual design application process, since the module frame is saved, how to better limit and fix the battery monomer becomes an important technical problem that needs to be solved by the technical personnel in the field. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model provides a battery pack and electric device to better limit and fix the battery monomer.

[0005] In a first aspect, the utility model provides a battery pack, which has a first direction X, a second direction Y and a third direction Z intersecting with each other, and comprises:

[0006] A box body has a receiving cavity.

[0007] A cover body is connected to the box body, and the cover body covers the receiving cavity.

[0008] A plurality of battery monomers are located in the receiving cavity.

[0009] An electrical isolation plate is located on the side of the battery monomer facing the cover body, and the electrical isolation plate comprises a base body and a first connecting part extending along the first direction X, the first connecting part connects the base body, the first connecting part comprises a convex section and a concave section, and the convex section and the concave section extend along the third direction Z.

[0010] A pressing strip is located on the side of the electrical isolation plate facing the cover body, the pressing strip extends along the second direction Y, the concave section is provided with a groove matched with the pressing strip, and the pressing strip is arranged in the groove; the pressing strip and the concave section are connected.

[0011] A limiting strip is located on the side of the pressing strip facing the cover body, the limiting strip extends along the first direction X, the limiting strip intersects with the pressing strip, and the limiting strip and the pressing strip are connected.

[0012] In an alternative implementation, the plurality of battery monomers form a plurality of columns in the first direction X and a plurality of rows in the second direction Y, wherein in a single column of the battery monomers, two adjacent battery monomers are connected to each other.

[0013] The number of the pressing strips is a plurality, and the plurality of pressing strips are distributed at intervals in the first direction X, wherein in a single column of the battery monomers, each battery monomer is connected to the pressing strip.

[0014] The number of the limiting strips is a plurality, and the plurality of limiting strips are distributed at intervals in the second direction Y, wherein in a single row of the battery monomers, each battery monomer is connected to the limiting strip; the plurality of limiting strips and the plurality of pressing strips intersect two by two, and one limiting strip is connected to at least one pressing strip.

[0015] In an alternative implementation, the box body comprises a frame and a bottom plate connected to each other, and the frame and the bottom plate enclose the accommodating cavity, and the cover body is connected to one side of the frame away from the bottom plate.

[0016] The frame comprises a plurality of edge beams connected in sequence, and the edge beams are provided with clamping grooves matched with the pressing strips, and the pressing strips are inserted into the clamping grooves.

[0017] In an alternative implementation, the protruding sections and the recessed sections are alternately distributed along the first direction X.

[0018] In an alternative implementation, the electrical isolation plate further comprises a second connecting portion extending along the second direction Y, the second connecting portion connects the first connecting portion, and the pressing strip covers the second connecting portion.

[0019] In an alternative implementation, the pressing strip comprises a pressing strip body extending along the second direction Y and a reinforcing protrusion, and along the third direction Z, the reinforcing protrusion is located on the side of the pressing strip body facing the cover body; the pressing strip body and the reinforcing protrusion are connected.

[0020] In an alternative implementation, the reinforcing protrusion is in the shape of a strip, and the reinforcing protrusion extends along the second direction Y.

[0021] In an alternative implementation, the reinforcing protrusion has an avoiding portion matched with the limiting strip, and the limiting strip penetrates through the avoiding portion along the first direction X.

[0022] In an alternative implementation, along the third direction Z, the size of the limiting strip is H1 mm, and the size of the reinforcing protrusion is H2 mm, and H1≥H2 is satisfied.

[0023] The utility model provides a battery pack, through the cross arrangement of the pressing strip and the limiting strip can effectively limit and fix the battery monomer, make the structure of battery pack more stable and reliable, and limiting strip can also support the cover body, avoid the short circuit problem caused by the contact of cover body and battery monomer, improve the safety performance of battery pack.

[0024] The battery pack provided by the utility model can effectively limit and fix the battery monomers through the cross arrangement of the pressing strips and the limiting strips, make the structure of the battery pack more stable and reliable, and the limiting strips can also support the cover body, avoid the short circuit problem caused by the contact of the cover body and the battery monomers, and improve the safety performance of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0026] Figure 1 It is a perspective view of the battery pack of the embodiment of the utility model;

[0027] Figure 2 It is a perspective view of the battery pack of the embodiment of the utility model after removing the cover body;

[0028] Figure 3 It is a perspective view of the box body of the embodiment of the utility model;

[0029] Figure 4 It is a partial perspective view of the electrical isolation plate of the embodiment of the utility model;

[0030] Figure 5 It is a partial front view of the pressing strip of the embodiment of the utility model;

[0031] Figure 6 It is a partial perspective view of the beam clamping groove of the embodiment of the utility model;

[0032] Figure 7 It is a schematic view of the cooperation of the pressing strip and the limiting strip of the embodiment of the utility model;

[0033] Figure 8 It is a structural schematic view of the limiting strip of the embodiment of the utility model.

[0034] Explanation of reference signs:

[0035] 1, box; 101, accommodating cavity; 102, frame; 1021, edge beam; 1022, clamping groove; 103, bottom plate; 2, cover; 3, battery monomer; 300, battery pack; 4, electrical isolation plate; 401, base part; 402, first connecting part; 4021, protruding section; 4022, recessed section; 40221, groove; 403, second connecting part; 5, pressing strip; 501, pressing strip main body; 502, reinforcing protrusion; 5021, avoiding part; 503, protruding part; 5031, gap; 6, limiting strip; 7, flexible circuit board. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0037] In the description of the present application, 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" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0038] In the description of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, it can be direct connection, or indirect connection through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0040] The battery pack and the electric device according to the embodiments of the utility model are described below in combination with Figures 1 to 8 .

[0041] According to the embodiments of the utility model, on the one hand, a battery pack is provided, the battery pack has a first direction X, a second direction Y and a third direction Z intersecting with each other, in the present embodiment, the first direction X is the length direction of the battery pack, the second direction Y is the width direction of the battery pack, and the third direction Z is the height direction of the battery pack, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0042] Specifically, the battery pack comprises a box body 1, a cover body 2, a plurality of battery monomers 3, an electrical isolation plate 4, a pressing strip 5 and a limiting strip 6. Referring to Figure 1 and Figure 2 , the box body 1 has a containing cavity 101, and the plurality of battery monomers 3 are located in the containing cavity 101. The cover body 2 is connected to the box body 1, and the cover body 2 seals the containing cavity 101. Specifically, the cover body 2 and the box body 1 are provided with mounting holes for inserting bolts correspondingly, and the cover body 2 and the box body 1 are connected and fastened by a bolt assembly.

[0043] As shown in Figure 2 , the electrical isolation plate 4 is located on the side of the battery monomer 3 facing the cover body 2, and the electrical isolation plate 4 is used to realize the electrical isolation of the battery monomer 3 and the outside world, increase the creepage distance, and improve the safety of the battery pack. As Figure 4As shown, the electrical isolation plate 4 includes a base portion 401 and a first connecting portion 402, specifically, the base portion 401 and the first connecting portion 402 each have a plurality of, each base portion 401 is assembled on the pole column upper side of the battery monomer 3, the first connecting portion 402 extends along the first direction X, and the first connecting portion 402 connects the base portion 401.

[0044] Referring to Figure 4 , the first connecting portion 402 includes a convex section 4021 and a concave section 4022, and the convex section 4021 and the concave section 4022 extend along the third direction Z. The convex section 4021 and the concave section 4022 form a concave-convex undulating opening area, in order to improve the connection and fixing effect between the battery monomer and the battery pack, the battery monomer 3 and the cover body 2 of the battery pack will be filled with glue, when the glue is poured into the battery pack, the glue penetrates through the undulating opening area, and at the same time, the glue will cover the convex section 4021 and the concave section 4022, that is, the first connecting portion 402 of the electrical isolation plate 4 will exist in the form of embedding the glue layer, which increases the contact area of the electrical isolation plate 4 and the glue, and further improves the bonding strength and the assembly strength of the electrical isolation plate 4. Preferably, the convex section 4021 and the concave section 4022 are both rectangular groove structures. The inner and outer surface area of the rectangular groove structure is large, which can further increase the contact area of the electrical isolation plate 4 and the glue.

[0045] As shown in Figure 2 and Figure 6 , the pressing strip 5 is located on the side of the electrical isolation plate 4 facing the cover body 2, the pressing strip 5 extends along the second direction Y, the concave section 4022 is provided with a groove 40221 matched with the pressing strip 5, the pressing strip 5 is arranged in the groove 40221, and the pressing strip 5 and the concave section 4022 are connected. The pressing strip 5 abuts against the top cover of the battery monomer 3, which can reliably fix the battery monomer 3, and the pressing strip 5 is located above the electrical isolation plate 4, which can also press and hold the electrical isolation plate 4, further improving the overall structural strength. In addition, the pressing strip 5 is located in the groove 40221, which can also play a positioning role for the pressing strip 5, facilitating assembly.

[0046] The limiting strip 6 is located on the side of the pressing strip 5 facing the cover body 2, the limiting strip 6 extends along the first direction X, the limiting strip 6 intersects with the pressing strip 5, and the limiting strip 6 and the pressing strip 5 are connected. And the limiting strip 6 abuts against the top cover of the battery monomer 3, which can reliably fix the battery monomer 3, and can also reduce the contact between the cover body 2 and the battery monomer 3, preventing short circuit.

[0047] In this way, the pressing strips 5 and the limiting strips 6 arranged in a cross manner can effectively limit and fix the battery monomers 3, so that the structure of the battery pack is more stable and reliable, and the limiting strips 6 can also support the cover body 2 to avoid short circuit caused by the contact between the cover body 2 and the battery monomers 3, and improve the safety performance of the battery pack. Meanwhile, the pressing strips 5 and the limiting strips 6 arranged in a cross manner can cooperate with the glue layer formed by filling glue on the top of the battery monomers 3 in the later stage to reinforce the structure of the battery pack, and further improve the stability of the structure of the battery pack. In addition, the electrical isolation plate 4 has the protruding section 4021 and the recessed section 4022 to form a concave-convex undulating opening area, the glue penetrates through the undulating opening area, the contact area between the electrical isolation plate 4 and the glue is increased, and the bonding strength and the assembly strength of the electrical isolation plate 4 are further improved.

[0048] In some embodiments of the utility model, as shown in Figure 2 , the plurality of battery monomers 3 form a plurality of columns in the first direction X and a plurality of rows in the second direction Y to form the battery pack 300. Among them, the adjacent two columns of battery monomers 3 are connected to each other, in the single column of battery monomers 3, the adjacent two battery monomers 3 are connected to each other, and one end of the battery pack 300 in the third direction Z is connected to the bottom surface of the box body 1.

[0049] The number of the pressing strips 5 is multiple, and the multiple pressing strips 5 are distributed in the first direction X at intervals, wherein, in the single column of battery monomers 3, each battery monomer 3 is connected with the pressing strip 5. The number of the limiting strips 6 is multiple, and the multiple limiting strips 6 are distributed in the second direction Y at intervals, wherein, in the single row of battery monomers 3, each battery monomer 3 is connected with the limiting strip 6. The multiple pressing strips 5 and the multiple limiting strips 6 intersect two by two, and one pressing strip 5 is connected with at least one limiting strip 6 to form a network topology structure, which can strengthen the overall horizontal and vertical arrangement mode, make the connection between the multiple battery monomers 3 more tightly fastened, ensure the stability and reliability of the whole battery pack structure, and improve the overall structural strength of the battery pack.

[0050] In some embodiments of the utility model, as shown in Figure 3 , the box body 1 comprises a frame 102 and a bottom plate 103 connected to each other, and the frame 102 and the bottom plate 103 enclose a containing cavity 101. Specifically, the frame 102 and the bottom plate 103 are provided with mounting holes for inserting bolts correspondingly, and the bottom plate 103 and the frame 102 are connected and fastened by a bolt assembly. The cover body 2 is connected to one side of the frame 102 away from the bottom plate 103 to close the opening side of the containing cavity 101.

[0051] Referring to Figure 2 , Figure 3 and Figure 6The frame 102 comprises a plurality of edge beams 1021 connected in sequence, the edge beams 1021 are provided with clamping grooves 1022 matched with the pressing strips 5, and the pressing strips 5 are inserted into the clamping grooves 1022. Specifically, the number of the pressing strips 5 is multiple, the edge beams 1021 at both ends of the pressing strips 5, and the number of the clamping grooves 1022 is multiple and corresponds to the pressing strips 5 one by one. In this way, the pressing strips 5 are clamped in the clamping grooves 1022, which can limit and fix the pressing strips 5, facilitate the overall installation of the battery pack, and improve the assembly efficiency and assembly accuracy of the battery pack.

[0052] In some embodiments of the utility model, as shown in Figure 4 The protruding sections 4021 and the recessed sections 4022 are alternately distributed along the first direction X. In this way, the alternately distributed protruding sections 4021 and recessed sections 4022 form a stepped structure, when the glue is poured into the battery pack, the glue will cover the protruding sections 4021 and the recessed sections 4022, the stepped structure can increase the contact area between the electrical isolation plate 4 and the glue, thereby effectively improving the bonding strength, and the structural stability of the battery pack can be further improved.

[0053] In some embodiments of the utility model, as shown in Figure 4 The electrical isolation plate 4 further comprises a second connecting part 403 extending along the second direction Y, the number of the second connecting part 403 is multiple, the second connecting part 403 connects each first connecting part 402, and the pressing strip 5 covers the second connecting part 403. In this way, the first connecting part 402 and the second connecting part 403 connect the base part 401 as a whole, and the overall strength of the electrical isolation plate 4 is ensured.

[0054] In some embodiments of the utility model, as shown in Figure 5 The pressing strip 5 comprises a pressing strip main body 501 extending along the second direction Y and a reinforcing protrusion 502, along the third direction Z, the reinforcing protrusion 502 is located on the side of the pressing strip main body 501 facing the cover 2, and the pressing strip main body 501 and the reinforcing protrusion 502 are connected. In this way, the structural strength of the pressing strip 5 can be strengthened, the pressing strip 5 can be prevented from bending downward when being assembled on the battery monomer 3, the assembly is facilitated, and the battery monomer 3 is more stably fixed. Moreover, after the pressing strip 5 is connected with the battery monomer 3, when subjected to a series of mechanical actions such as vibration, impact and extrusion, the reinforcing protrusion 502 can also disperse the shear force, so that the pressing strip 5 is not easily broken.

[0055] In some embodiments of the utility model, as shown in Figure 7 The reinforcing protrusion 502 is in a strip shape and extends along the second direction Y. In this way, sufficient strength can be provided in the height direction of the pressing strip 5, that is, the third direction Z, and the force transmission can be better dispersed when the pressing strip 5 is stressed. It should be noted that, as shown in Figure 2As shown in the figure, the number of the reinforcing protrusions 502 includes but is not limited to one, and can also be two, three or more, a plurality of reinforcing protrusions 502 are arranged on the pressing strip body 501 in the first direction X, and the present application does not limit this.

[0056] In some embodiments of the present application, as shown in the figure, Figure 7 As shown in the figure, the reinforcing protrusion 502 has a avoiding part 5021 matched with the limiting strip 6, and the limiting strip 6 penetrates through the avoiding part 5021 in the first direction X. In this way, the limiting strip 6 is arranged conveniently, and the limiting strip 6 is positioned and installed, the close contact between the limiting strip 6 and the pressing strip 5 is ensured, and the transverse and longitudinal cross structure is more stable, so that the battery monomer 3 can be better limited and fixed.

[0057] In some embodiments of the present application, as shown in the figure, Figure 5 And Figure 8 As shown in the figure, in the third direction Z, the size of the limiting strip 6 is H1 mm, and the size of the reinforcing protrusion 502 is H2 mm, and H1≥H2 is satisfied. That is, the height of the limiting strip 6 is greater than or equal to the height of the reinforcing protrusion 502. In this way, the reinforcing protrusion 502 and the limiting strip 6 on the pressing strip 5 form a transverse and longitudinal cross support structure on the top of the battery monomer 3, so that the cover body 2 can be more reliably supported, and the contact between the cover body 2 and the battery monomer 3 when the cover body 2 is pressed to sink is reduced. Moreover, after being matched with the filling glue, the glue covers the transverse and longitudinal cross support structure, and jointly supports the cover body 2. That is, the pressing strip 5, the reinforcing protrusion 502 and the limiting strip 6 are embedded in the glue layer, which is convenient for cooperation with the glue layer and plays a structure reinforcing function. In addition, the material of the limiting strip 6 includes but is not limited to an insulating material such as PC (Polycarbonate, i.e. Polycarbonate), and the selection of the material needs to be determined according to the actual application environment and performance requirements. In addition, the thickness value H1 of the limiting strip 6 needs to be determined according to the actual design requirements, for example, H1 can be selected as 0.7.

[0058] In some embodiments of the present application, as shown in the figure, Figure 5 As shown in the figure, in the third direction Z, the size of the pressing strip body 501 is H3 mm, and 1≤H3≤6 is satisfied. For example, H3 can be selected as 2.3. If the thickness of the pressing strip 5 is too small, for example, less than 1 mm, the overall strength of the pressing strip 5 will be too small, which is not conducive to the role of stretching the expansion force of the battery monomer 3 and the structure fixation. If the thickness of the pressing strip 5 is too large, for example, greater than 6 mm, the strength will be too redundant, and the thickness direction space will be occupied too much, which will affect the volume utilization rate. By selecting the thickness of the pressing strip 5 to be 1 mm to 6 mm, the design requirements of structural strength and space utilization rate can be considered at the same time, so that the battery monomer 3 can be better fixed. In addition, the material of the pressing strip 5 includes but is not limited to polyurethane and glass fiber. It should be noted that, for example,Figure 5 The third direction Z in the figure is the thickness direction of the battery pack.

[0059] In some embodiments of the utility model, as shown in Figure 5 And Figure 7 As shown, the pressing strip 5 also includes a plurality of protruding portions 503, which are located on the side of the pressing strip body 501 away from the cover 2 along the third direction Z. The protruding portions 503 extend along the third direction Z, and the plurality of protruding portions 503 are spaced apart along the second direction Y. There is a gap 5031 between two adjacent protruding portions 503, and the recessed section 4022 penetrates the gap 5031 along the first direction X.

[0060] In this way, the side of the glue connecting pressing strip body 501 facing the battery monomer 3, the protruding portion 503, and the top of the battery monomer 3 are connected. The arrangement of the protruding portion 503 increases the contact area between the pressing strip 5 and the glue layer, improves the connection strength between the pressing strip 5 and the glue layer, and better connects the plurality of battery monomers 3 to form a battery pack 300, thereby improving the structural strength of the battery pack 300.

[0061] Moreover, the protruding portion 503 contacts the battery monomer 3, which can limit the distance between the pressing strip 5 and the battery monomer 3. Thus, in actual application, the bonding thickness of the glue layer can be controlled to be appropriate, which can increase the bonding effect.

[0062] In some embodiments of the utility model, as shown in Figure 7 As shown, the battery pack also includes a flexible circuit board 7 for collecting voltage and temperature information of the battery monomer 3. The flexible circuit board 7 is located between the electrical isolation plate 4 and the battery monomer 3, and is connected to the electrical isolation plate 4 and the battery monomer 3, respectively. The flexible circuit board 7 extends along the first direction X, and penetrates the gap 5031 along the first direction X. In this way, the installation space in the third direction Z can be fully utilized, and additional space can be avoided, thereby improving the energy density of the battery pack. Moreover, the electrical isolation plate 4 is located above the flexible circuit board 7, which shields and protects the flexible circuit board 7, and reduces the harmful effects of external factors on the flexible circuit board 7.

[0063] According to the embodiments of the utility model, on the other hand, a kind of electric device is further provided, and electric device includes but is not limited to electric vehicle, unmanned aerial vehicle, mobile power etc., and the electric device includes battery pack in each embodiment as described above.Such arrangement, by transverse and longitudinal cross arrangement of pressing strip 5 and limit strip 6 can effectively limit and fix battery monomer 3, so that the structure of battery pack is more stable and reliable, and limit strip 6 can also support cover 2, avoid short circuit caused by the contact between cover 2 and battery monomer 3 and other problems, improve the safety performance of battery pack.Simultaneously, the pressing strip 5 and limit strip 6 of transverse and longitudinal cross arrangement form, and the glue layer formed by filling glue on the top of battery monomer 3 in later stage mutually cooperate, can play the role of reinforcing to battery pack structure, further improve the stability of battery pack structure.In addition, electrical isolation plate 4 has protruding section 4021 and recessed section 4022, to form the opening area of concave and convex fluctuation, glue is penetrated through the fluctuation opening area, increase the contact area of electrical isolation plate 4 and glue, further improve bonding strength and the assembly strength of electrical isolation plate 4.The derivation process of the beneficial effects of the above battery pack is roughly similar, so it is not repeated here.

[0064] Although the embodiments of the utility model are described in combination with the drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery pack having a first direction (X), a second direction (Y), and a third direction (Z) that intersect two by two, characterized in that, The utility model relates to a battery box, including: A box (1) has the accommodation cavity (101); Cover (2) is connected to the box (1), and the cover (2) covers the accommodation cavity (101); A plurality of battery monomer (3) is located in the accommodation cavity (101); Electricity isolation board (4) is located at the side of battery monomer (3) towards cover (2), and the electricity isolation board (4) includes base portion (401) and the first connecting portion (402) extending along the first direction (X), and the first connecting portion (402) connects the base portion (401), and the first connecting portion (402) includes convex section (4021) and recessed section (4022), and the convex section (4021) and recessed section (4022) extend along the third direction (Z); Pressing strip (5) is located at the side of electricity isolation board (4) towards cover (2), and the pressing strip (5) extends along the second direction (Y), and the recessed section (4022) is provided with recess (40221) compatible with the pressing strip (5), and the pressing strip (5) is arranged in the recess (40221);The pressing strip (5) and the recessed section (4022) are connected; Limiting strip (6) is located at the side of pressing strip (5) towards cover (2), and the limiting strip (6) extends along the first direction (X), and the limiting strip (6) intersects with the pressing strip (5), and the limiting strip (6) and the pressing strip (5) are connected.

2. The battery pack of claim 1, wherein, A plurality of battery monomer (3) forms multiple columns in the first direction (X), and forms multiple rows in the second direction (Y), wherein, in a single column of battery monomer (3), adjacent two battery monomers (3) are connected to each other; The number of pressing strip (5) is multiple, and multiple pressing strips (5) are distributed at intervals in the first direction (X), wherein, in a single column of battery monomer (3), each battery monomer (3) is connected with the pressing strip (5); The number of limiting strip (6) is multiple, and multiple limiting strips (6) are distributed at intervals in the second direction (Y), wherein, in a single row of battery monomer (3), each battery monomer (3) is connected with the limiting strip (6);Multiple limiting strips (6) and multiple pressing strips (5) intersect two by two, and one limiting strip (6) and at least one pressing strip (5) are connected.

3. The battery pack of claim 1 or 2, wherein, The box (1) includes mutually connected frame (102) and bottom plate (103), and the frame (102) and the bottom plate (103) are enclosed to form the accommodation cavity (101), and the cover (2) is connected to the side of the frame (102) away from the bottom plate (103); The frame (102) includes multiple sequentially connected edge beams (1021), and the edge beam (1021) is provided with clamping groove (1022) compatible with the pressing strip (5), and the pressing strip (5) is inserted into the clamping groove (1022).

4. The battery pack of claim 1 or 2, wherein, The convex segments (4021) and the concave segments (4022) are alternately distributed along the first direction (X).

5. The battery pack of claim 1 or 2, wherein, The electrically isolated plate (4) further comprises a second connecting portion (403) extending along the second direction (Y), the second connecting portion (403) connecting the first connecting portion (402), and the pressing strip (5) covering the second connecting portion (403).

6. The battery pack of claim 1 or 2, wherein, The pressing strip (5) comprises a pressing strip body (501) extending along the second direction (Y) and a reinforcing convex (502), the reinforcing convex (502) being located on a side of the pressing strip body (501) facing the cover (2) along the third direction (Z), and the pressing strip body (501) and the reinforcing convex (502) being connected.

7. The battery pack of claim 6, wherein, The reinforcing convex (502) is in a strip shape, and the reinforcing convex (502) extends along the second direction (Y).

8. The battery pack of claim 6, wherein, The reinforcing convex (502) has an avoiding portion (5021) matched with the limiting strip (6), and the limiting strip (6) penetrates through the avoiding portion (5021) along the first direction (X).

9. The battery pack of claim 8, wherein, Along the third direction (Z), the size of the limiting strip (6) is H1 mm, and the size of the reinforcing convex (502) is H2 mm, and H1 is greater than or equal to H2.

10. An electrical device, characterized by A battery pack comprising the battery pack according to any one of claims 1 to 9.

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