Battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack. The battery pack can comprise a battery box body, an isolation assembly, a pouring sealant part, a sealant blocking strip, an electronic device, a high-voltage connector and a low-voltage connector, the battery box body comprises a bottom plate and a protective cover which are oppositely arranged, and a side edge beam connected between the bottom plate and the protective cover, and the battery box body is provided with a containing cavity; the isolation assembly is arranged in the battery box body and at least divides the accommodating cavity into an electrical cabin and a battery cabin; the pouring sealant part is arranged in the battery compartment; the rubber blocking strip is arranged on the side, away from the bottom plate, of the isolation assembly surrounding the electrical bin, and the face, away from the isolation assembly, of the rubber blocking strip abuts against the protective cover. The electronic device, the high-voltage connector and the low-voltage connector are arranged in the electrical bin. The internal parts of the electrical cabin of the battery pack are convenient to connect, operate and replace.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a battery pack. Background Art

[0002] The single cells in the battery pack need to be fixed in the battery box by the potting glue part, but the electronic components are easily damaged and need to be replaced. At present, the potting glue part that fixes the single cells in the battery pack is easy to overflow to the electronic components, thereby bonding and fixing the electronic components, making it impossible to replace the electronic components.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] The purpose of the present disclosure is to overcome the deficiencies of the above-mentioned related technologies and provide a battery pack.

[0005] According to one aspect of the present disclosure, there is provided a battery pack, comprising:

[0006] A battery box body, comprising a bottom plate and a protective cover arranged opposite to each other, and a side beam connected between the bottom plate and the protective cover, wherein the battery box body has a receiving cavity;

[0007] An isolation component is disposed in the battery box, and the isolation component separates the accommodating cavity into at least an electrical compartment and a battery compartment;

[0008] A potting glue part, arranged in the battery compartment;

[0009] A rubber blocking strip is arranged on a side of the isolation component surrounding the electrical compartment away from the bottom plate, and a side of the rubber blocking strip away from the isolation component abuts against the protective cover;

[0010] Electronic components, high-voltage connectors and low-voltage connectors are arranged in the electrical compartment.

[0011] In the battery pack disclosed herein, on the one hand, the isolation component separates the accommodating cavity into the electrical compartment and the battery compartment, and the isolation component can prevent most of the potting glue from flowing into the electrical compartment; on the other hand, a rubber blocking strip is provided on the side of the isolation component surrounding the electrical compartment that is away from the bottom plate, and the side of the rubber blocking strip that is away from the isolation component abuts against the protective cover, and the rubber blocking strip can block the potting glue, thereby preventing the potting glue from overflowing into the electrical compartment through the gap between the isolation component and the protective cover, ensuring that the electronic components will not be bonded and fixed, so that the electronic components can be replaced; on another hand, the high-voltage connector and the low-voltage connector are arranged in the electrical compartment, which is convenient for connecting and replacing the high-voltage connector and the low-voltage connector.

[0012] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of an exemplary embodiment of the battery pack of the present disclosure after removing the protective cover.

[0015] Figure 2 It is a schematic structural diagram of an exemplary embodiment of the battery pack of the present disclosure after removing one side beam.

[0016] Figure 3 It is Figure 2 a schematic structural diagram of the battery pack in [] when the protective cover is not installed.

[0017] Figure 4 It is Figure 2 a schematic structural diagram of an exemplary embodiment of the separator plate in [].

[0018] Figure 5 It is Figure 4 a three-dimensional structural diagram of the cooperation of the separator plate, the rubber strip and the fixing plate in [].

[0019] Figure 6 It is a top view schematic diagram of the cooperation between the battery box body and the isolation component in the battery pack of the present disclosure.

[0020] Figure 7 It is a partial enlarged schematic diagram of the electrical compartment part of the battery pack of the present disclosure.

[0021] DESCRIPTION OF THE REFERENCE NUMERALS:

[0022] 1. Battery box body; 11. Bottom plate; 12. Side beam; 12a. First side beam; 12b. Second side beam; 13. Protective cover; 14. Accommodation cavity; 141. Electrical compartment; 142. Non-electrical compartment; 1421. Battery compartment; 1422. Heat exchange connection compartment; 14221. First gap; 14222. Second gap;

[0023] 2. Isolation component; 21. Separator plate; 211. First connecting plate; 212. Second connecting plate; 213. Third connecting plate; 214. Fourth connecting plate; 215. Fifth connecting plate; 216. First bending plate; 217. Third bending plate; 22. Isolation beam;

[0024] 3. Potting glue part;

[0025] 4. Glue blocking strip; 41. First part; 42. Second part; 43. Third part;

[0026] 5. Electronic device; 51. High - voltage connector; 52. Low - voltage connector;

[0027] 61. First heat - exchange pipe; 62. Second heat - exchange pipe;

[0028] 7. Fixing plate;

[0029] 81. High - voltage conducting part; 811. High - voltage positive - pole conducting row; 812. High - voltage negative - pole conducting row; 82. Low - voltage conducting part;

[0030] 91. First insulating part; 92. Second insulating part;

[0031] 10. Adhesive layer; 101. Monomer cell; 102. Low - voltage insulating buckle;

[0032] X. First direction; Y. Second direction; Z. Third direction. Detailed implementation manners

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0034] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the directions of the examples described in the accompanying drawings. It can be understood that if the device of the icon is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0035] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and refer to the possibility of the existence of additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", "third", etc. are used only as labels and do not limit the quantity of their objects.

[0036] In this application, unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium. "And / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this text, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0037] This disclosure provides an example embodiment of a battery pack. Referring to Figures 1 - 7 As shown, the battery pack may include a battery box body 1, an isolation component 2, a potting glue part 3, a glue blocking strip 4, and an electronic device 5; the battery box body 1 may include a bottom plate 11 and a protective cover 13 arranged opposite to each other, and side beams 12 connected between the bottom plate 11 and the protective cover 13. The battery box body 1 has a receiving cavity 14; the isolation component 2 is arranged inside the battery box body 1, and the isolation component 2 divides the receiving cavity 14 into at least an electrical compartment 141 and a battery compartment 1421; the potting glue part 3 is arranged inside the battery compartment 1421; the glue blocking strip 4 is arranged on the side of the isolation component 2 surrounding the electrical compartment 141 facing away from the bottom plate 11, and one side of the glue blocking strip 4 facing away from the isolation component 2 abuts against the protective cover 13; the electronic device 5, a high-voltage connector 51, and a low-voltage connector 52 are arranged inside the electrical compartment 141.

[0038] For the battery pack of this disclosure, on the one hand, the isolation component 2 divides the receiving cavity 14 into the electrical compartment 141 and the battery compartment 1421, and most of the potting glue can be prevented from flowing into the electrical compartment 141 through the isolation component 2; on the other hand, a glue blocking strip 4 is arranged on the side of the isolation component 2 surrounding the electrical compartment 141 facing away from the bottom plate 11, and one side of the glue blocking strip 4 facing away from the isolation component 2 abuts against the protective cover 13. The glue blocking strip 4 can block the potting glue, thereby preventing the potting glue from overflowing into the electrical compartment 141 through the gap between the isolation component 2 and the protective cover 13, ensuring that the electronic device 5 will not be adhesively fixed and enabling the replacement of the electronic device 5; on the other hand, the high-voltage connector 51 and the low-voltage connector 52 are arranged inside the electrical compartment 141, facilitating the connection operation and replacement of the high-voltage connector 51 and the low-voltage connector 52.

[0039] In this example embodiment, referring toFigure 1 and Figure 2 As shown, the battery pack may include a battery box body 1, and the battery box body 1 may be configured as a cuboid structure. Specifically, the battery box body 1 may include a bottom plate 11, a protective cover 13, and four side beams 12. The four side beams 12 may include two first side beams 12a and two second side beams 12b. The bottom plate 11 and the protective cover 13 may be configured as rectangles. Two first side beams 12a and two second side beams 12b are arranged around the periphery of the bottom plate 11. The two first side beams 12a and the two second side beams 12b are connected end to end to form a rectangular frame. The first side beam 12a extends along a first direction X, and the second side beam 12b extends along a second direction Y. A protective cover 13 is provided on the other side of the two first side beams 12a and the two second side beams 12b opposite to the bottom plate 11, such that the protective cover 13 is disposed opposite to the bottom plate 11. The two first side beams 12a and the two second side beams 12b are connected between the protective cover 13 and the bottom plate 11. The bottom plate 11, the protective cover 13, the two first side beams 12a, and the two second side beams 12b enclose to form a receiving cavity 14 of the battery box body 1.

[0040] It should be noted that both the first direction X and the second direction Y are parallel to the bottom plate 11, and the first direction X is perpendicular to the second direction Y; the third direction Z is perpendicular to the bottom plate 11.

[0041] In the present exemplary embodiment, referring to Figure 1 and Figure 2 As shown, an isolation component 2 is provided in the battery box body 1. The isolation component 2 divides the receiving cavity 14 into at least an electrical compartment 141 and a battery compartment 1421; a single cell 101 is provided in the battery compartment 1421, and a potting glue part 3 is provided in the battery compartment 1421. The single cell 101 can be fixed in the battery compartment 1421 through the potting glue part 3 to prevent the single cell 101 from moving in the battery compartment 1421, so as to ensure the strength and stability of the battery pack. After the single cell 101 is installed in the battery compartment 1421, potting glue is potted into the battery compartment 1421, and then the protective cover 13 is closed. After the potting glue is cured, the potting glue part 3 is formed. The potting glue can be a foaming glue.

[0042] Various electronic devices 5, a high-voltage connector 51, a low-voltage connector 52, etc. are provided in the electrical compartment 141. The electronic devices 5 may include a BMS (Battery Management System) and a BDU (Battery Disconnect Unit), etc.

[0043] The electronic device 5 is prone to damage and needs to be replaced. If the potting glue in the battery compartment 1421 overflows into the electrical compartment 141, the electronic device 5 will also be adhesively fixed, resulting in the inability to replace the electronic device 5. By separating the accommodation cavity 14 into the electrical compartment 141 and the battery compartment 1421 through the isolation component 2, most of the potting glue can be prevented from flowing into the electrical compartment 141. However, the potting glue will still overflow into the electrical compartment 141 through the gap between the isolation component 2 and the protective cover 13, adhesively fixing the electronic device 5 and causing the inability to replace the electronic device 5.

[0044] In the present exemplary embodiment, as shown in Figure 2 the figure, a glue-blocking strip 4 is provided on the side of the isolation component 2 surrounding the electrical compartment 141 facing away from the bottom plate 11, and the side of the glue-blocking strip 4 facing away from the isolation component 2 abuts against the protective cover 13. Through the glue-blocking strip 4, the electrical compartment 141 can be hermetically isolated from the battery compartment 1421, completely preventing the potting glue from overflowing into the electrical compartment 141 through the gap between the isolation component 2 and the protective cover 13, ensuring that all components in the electrical compartment 141 will not be adhesively fixed, and enabling operations such as replacing these components.

[0045] Moreover, the high-voltage connector 51 and the low-voltage connector 52 are arranged in the electrical compartment 141, facilitating the connection operation and replacement of the high-voltage connector 51 and the low-voltage connector 52.

[0046] Compared with "connection", "abutment" emphasizes the existence of a force between the two; that is, "abutment" reflects the state where there is a force between the glue-blocking strip 4 and the protective cover 13.

[0047] In the present exemplary embodiment, as shown in Figure 3 the figure, in the third direction Z, the sum of the thickness H11 of the glue-blocking strip 4 and the height H12 of the isolation component 2 surrounding the electrical compartment 141 is H1, the distance between the side of the side beam 12 facing away from the bottom plate 11 and the bottom plate 11 is H2, and the difference between H1 and H2 is greater than or equal to 3 mm and less than or equal to 20 mm. For example, the difference between H1 and H2 can be 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, etc. It can also be said that the side of the glue-blocking strip 4 facing away from the bottom plate 11 protrudes from the side beam 12, and the dimension by which the glue-blocking strip 4 protrudes from the side beam 12 is greater than or equal to 3 mm and less than or equal to 20 mm.

[0048] Specifically, since the rubber baffle 4 has a certain compressibility, that is, the rubber baffle 4 can be compressed; when the rubber baffle 4 is not compressed, the difference between H1 and H2 is greater than or equal to 4 mm and less than or equal to 20 mm; when the rubber baffle 4 is compressed, the difference between H1 and H2 is greater than or equal to 3 mm and less than or equal to 10 mm. Specific numerical examples have been given above, so specific possible values will not be elaborated here one by one.

[0049] Generally, the height of the isolation component 2 surrounding the electrical compartment 141 has been set. If the difference between H1 and H2 is too large, causing the sum H1 of the thickness H11 of the rubber baffle 4 and the height H12 of the isolation component 2 surrounding the electrical compartment 141 to be too large, that is, the size of the rubber baffle 4 protruding from the side beam 12 is too large, after the protective cover 13 is closed, the rubber baffle 4 will push up the protective cover 13 to form a protruding part, affecting the structural strength of the entire battery pack, and will also cause a large gap between the protective cover 13 and the side beam 12, which is not conducive to the sealing of the battery pack.

[0050] If the difference between H1 and H2 is too small, causing the sum H1 of the thickness H11 of the rubber baffle 4 and the height H12 of the isolation component 2 surrounding the electrical compartment 141 to be too small, that is, the size of the rubber baffle 4 protruding from the side beam 12 is too small, there will still be a gap between the protective cover 13 and the rubber baffle 4, resulting in the rubber baffle 4 being unable to seal and isolate the electrical compartment 141 from the battery compartment 1421, causing the potting glue to overflow into the electrical compartment 141 through the gap between the isolation component 2 and the protective cover 13, bonding and fixing the electronic device 5, and making it impossible to replace the electronic device 5.

[0051] The above numerical range not only ensures that after the protective cover 13 is closed, the rubber baffle 4 will not push up the protective cover 13 to form a protruding part, ensuring the structural strength of the entire battery pack, nor will it cause a large gap between the protective cover 13 and the side beam 12 to ensure the sealing of the battery pack; moreover, the rubber baffle 4 can seal and isolate the electrical compartment 141 from the battery compartment 1421, thereby preventing the potting glue from overflowing into the electrical compartment 141 through the gap between the isolation component 2 and the protective cover 13, ensuring that the electronic device 5 will not be bonded and fixed, and enabling the replacement of the electronic device 5.

[0052] The compression stress of the rubber baffle 4 is greater than or equal to 3 KPA and less than or equal to 110 KPA. For example, the compression stress of the rubber baffle 4 can be 10 KPA, 15 KPA, 20 KPA, 25 KPA, 30 KPA, 35 KPA, 40 KPA, 45 KPA, 50 KPA, 55 KPA, 60 KPA, 65 KPA, 70 KPA, 75 KPA, 80 KPA, 85 KPA, 90 KPA, 95 KPA, 100 KPA, 105 KPA, etc.

[0053] The compressive stress is the value obtained by dividing the compressive load applied to the specimen during the compression test by the original cross-sectional area of the specimen. The greater the compressive stress, the greater the density of the rubber sealing strip 4 and the poorer its elasticity.

[0054] The compressive stress of the rubber sealing strip 4 is set to be relatively small, so that the rubber sealing strip 4 can be deformed with a relatively small force. When the cover plate and the side beam 12 are closed, the rubber sealing strip 4 can be compressed to produce a certain deformation, so that the electrical compartment 141 and the battery compartment 1421 can be sealed and isolated through the rubber sealing strip 4.

[0055] If the compressive stress of the rubber sealing strip 4 is too large, it is not easy for the rubber sealing strip 4 to deform. After the protective cover 13 is closed, the rubber sealing strip 4 will push up the protective cover 13 to form a protrusion, which affects the structural strength of the entire battery pack and will also cause a large gap between the protective cover 13 and the side beam 12, which is not conducive to the sealing of the battery pack.

[0056] If the compressive stress of the rubber sealing strip 4 is too small, the rubber sealing strip 4 is too easy to deform and cannot support the protective cover 13; moreover, when the potting glue is a foaming glue, the pressure generated during the foaming process of the foaming glue will squeeze and deform the rubber sealing strip 4, so that the rubber sealing strip 4 cannot seal and isolate the electrical compartment 141 and the battery compartment 1421, resulting in the potting glue overflowing into the electrical compartment 141 through the gap between the isolation component 2 and the protective cover 13, causing the electronic device 5 to be adhesively fixed and unable to replace the electronic device 5.

[0057] The above numerical range not only ensures that the rubber sealing strip 4 will deform after the protective cover 13 is closed, and the rubber sealing strip 4 will not push up the protective cover 13 to form a protrusion, ensuring the structural strength of the entire battery pack, nor will it cause a large gap between the protective cover 13 and the side beam 12 to ensure the sealing of the battery pack; moreover, the rubber sealing strip 4 can resist the pressure generated during the foaming process of the foaming glue without deforming, so that the electrical compartment 141 and the battery compartment 1421 can be sealed and isolated through the rubber sealing strip 4, thus avoiding the potting glue overflowing into the electrical compartment 141 through the gap between the isolation component 2 and the protective cover 13, ensuring that the electronic device 5 will not be adhesively fixed and enabling the replacement of the electronic device 5.

[0058] The compressive stress of the rubber sealing strip 4 can be measured by the method in "GB / T 10807 Determination of Hardness of Flexible Cellular Plastics (Indentation Method)", and there are also special devices for measurement, which will not be elaborated here.

[0059] In the present exemplary embodiment, with reference to Figure 2 and Figure 3As shown, the battery pack may further include an adhesive layer 10, and the adhesive layer 10 is bonded between the rubber stopper strip 4 and the isolation component 2, that is, the rubber stopper strip 4 is bonded to the isolation component 2 through the adhesive layer 10, so that the installation of the rubber stopper strip 4 is convenient and quick, and the rubber stopper strip 4 will not be damaged, thereby ensuring the rubber stopper performance of the rubber stopper strip 4. Of course, in some other exemplary embodiments of the present disclosure, the rubber stopper strip 4 may also be fixed to the isolation component 2 by screws.

[0060] In this example implementation, refer to Figure 2 , Figure 3 and Figure 4 As shown, the isolation assembly 2 may include an isolation plate 21, which separates the accommodating cavity 14 into an electrical compartment 141 and a non-electrical compartment 142, and the battery compartment 1421 is a part of the non-electrical compartment 142, that is, the battery compartment 1421 is located in the non-electrical compartment 142.

[0061] Specifically, refer to Figure 4 As shown, the isolation plate 21 may include a first connecting plate 211, a second connecting plate 212 and a third connecting plate 213 connected in sequence; the second connecting plate 212 is connected to one end of the first connecting plate 211, and the third connecting plate 213 is connected to one end of the second connecting plate 212 away from the first connecting plate 211, that is, the first connecting plate 211 and the third connecting plate 213 are connected to opposite ends of the second connecting plate 212, and the third connecting plate 213 and the first connecting plate 211 are located on the same side of the second connecting plate 212, and the third connecting plate 213 is basically parallel to the first connecting plate 211, so that the first connecting plate 211, the second connecting plate 212 and the third connecting plate 213 are connected in sequence to form a basic "[" shape. The first connecting plate 211, the second connecting plate 212 and the third connecting plate 213 and the side beam 12 are arranged to form a battery compartment 1421. Specifically, the first connecting plate 211, the second connecting plate 212 and the third connecting plate 213 and a part of the second side beam 12b are arranged to form the battery compartment 1421. The thickness of the isolation plate 21 is relatively thin. By forming the battery compartment 1421 by the isolation plate 21, the occupation ratio of the internal space of the battery box 1 can be reduced, and the space utilization rate can be improved.

[0062] Moreover, the first connecting plate 211 , the second connecting plate 212 and the third connecting plate 213 are all arranged to intersect with the bottom plate 11 . For example, the first connecting plate 211 , the second connecting plate 212 and the third connecting plate 213 are all arranged perpendicular to the bottom plate 11 .

[0063] Of course, in some other exemplary embodiments of the present disclosure, the third connecting plate 213 and the first connecting plate 211 may not be arranged in parallel, but at a certain angle, such that the first connecting plate 211, the second connecting plate 212, and the third connecting plate 213 are sequentially connected to form a "[-]" shape with a larger opening, or such that the first connecting plate 211, the second connecting plate 212, and the third connecting plate 213 are sequentially connected to form a "[-]" shape with a smaller opening.

[0064] In this exemplary embodiment, referring to Figure 5 as shown, the rubber dam 4 may include a first portion 41, a second portion 42, and a third portion 43. The first portion 41, the second portion 42, and the third portion 43 are sequentially connected, that is, the second portion 42 is connected to one end of the first portion 41, and the third portion 43 is connected to the end of the second portion 42 that is away from the first portion 41. It can also be said that the first portion 41 and the third portion 43 are connected to opposite ends of the second portion 42.

[0065] The first portion 41 is located on the side of the first connecting plate 211 away from the bottom plate 11. In the first direction X, the size of the first portion 41 is substantially the same as the size of the first connecting plate 211. The second portion 42 is located on the side of the second connecting plate 212 away from the bottom plate 11. In the second direction Y, the size of the second portion 42 is substantially the same as the size of the second connecting plate 212. The third portion 43 is located on the side of the third connecting plate 213 away from the bottom plate 11. In the first direction X, the size of the third portion 43 is substantially the same as the size of the third connecting plate 213. Moreover, the first portion 41 and the third portion 43 are located on the same side of the second portion 42, the first portion 41 and the third portion 43 are arranged in parallel, and the first portion 41, the second portion 42, and the third portion 43 are sequentially connected to form a substantially "[-]" shape. The rubber dam 4 is disposed on the side of the isolation assembly 2 surrounding the electrical compartment 141 away from the bottom plate 11.

[0066] Of course, when the first connecting plate 211, the second connecting plate 212, and the third connecting plate 213 are sequentially connected to form a "[-]" shape with a larger opening, the first portion 41, the second portion 42, and the third portion 43 are also sequentially connected to form a "[-]" shape with a larger opening. When the first connecting plate 211, the second connecting plate 212, and the third connecting plate 213 are sequentially connected to form a "[-]" shape with a smaller opening, the first portion 41, the second portion 42, and the third portion 43 are also sequentially connected to form a "[-]" shape with a smaller opening.

[0067] Optionally, referring to Figure 4 and Figure 5As shown, the isolation component 2 may further include a first bending plate 216 and a third bending plate 217; the first bending plate 216 is connected to the side of the first connecting plate 211 facing away from the bottom plate 11, the first bending plate 216 is arranged substantially parallel to the bottom plate 11, the area of the side of the first bending plate 216 facing away from the bottom plate 11 is larger, and the first part 41 is located on the side of the first bending plate 216 facing away from the bottom plate 11; the area of the side of the first connecting plate 211 facing away from the bottom plate 11 is smaller, and the supporting effect on the first part 41 is not good. The first part 41 can be well supported by the first bending plate 216 with a larger area, avoiding the inclination of the first part 41 to ensure the sealing isolation between the electrical compartment 141 and the battery compartment 1421. The third bending plate 217 is connected to the side of the third connecting plate 213 facing away from the bottom plate 11, the third bending plate 217 is arranged substantially parallel to the bottom plate 11, the area of the side of the third bending plate 217 facing away from the bottom plate 11 is larger, and the third part 43 is located on the side of the third bending plate 217 facing away from the bottom plate 11; the area of the side of the third connecting plate 213 facing away from the bottom plate 11 is smaller, and the supporting effect on the third part 43 is not good. The third part 43 can be well supported by the third bending plate 217 with a larger area, avoiding the inclination of the third part 43 to ensure the sealing isolation between the electrical compartment 141 and the battery compartment 1421.

[0068] In the present exemplary embodiment, referring to Figure 4 and Figure 5 As shown, the isolation plate 21 may further include a fourth connecting plate 214 and a fifth connecting plate 215. The fourth connecting plate 214 is connected to one end of the first connecting plate 211 facing away from the second connecting plate 212, that is, the fourth connecting plate 214 and the second connecting plate 212 are connected to opposite ends of the first connecting plate 211. The fourth connecting plate 214 and the second connecting plate 212 are located on opposite sides of the first connecting plate 211, so that the fourth connecting plate 214, the first connecting plate 211, and the second connecting plate 212 are sequentially connected to form a substantially stepped structure. The fourth connecting plate 214 is also arranged substantially perpendicular to the bottom plate 11, and the fourth connecting plate 214 can be fixedly connected to the side beam 12. Specifically, the fourth connecting plate 214 can be attached to the first side beam 12a and fixedly connected to the first side beam 12a by screws.

[0069] The fifth connecting plate 215 is connected to one end of the third connecting plate 213 that is away from the second connecting plate 212, that is, the fifth connecting plate 215 and the second connecting plate 212 are connected to opposite ends of the third connecting plate 213. The fifth connecting plate 215 and the second connecting plate 212 are located on opposite sides of the third connecting plate 213, so that the fifth connecting plate 215, the third connecting plate 213, and the second connecting plate 212 are connected in sequence to form a substantially stepped structure. The fifth connecting plate 215 is also substantially perpendicular to the bottom plate 11, and the fifth connecting plate 215 is fixedly connected to the side beam 12 of the battery box 1. Specifically, the fifth connecting plate 215 can be attached to the first side beam 12a and fixedly connected to the first side beam 12a by screws.

[0070] The partition plate 21 is fixedly connected to the battery box 1 through the fourth connecting plate 214 and the fifth connecting plate 215 to ensure the connection strength between the partition plate 21 and the battery box 1 and prevent the partition plate 21 from being squeezed and deformed by the pressure generated during the foaming process of the foaming glue.

[0071] In the present exemplary embodiment, referring to Figure 1 as shown, a first gap 14221 is provided between the first connecting plate 211 and the side beam 12. Specifically, a first gap 14221 is provided between the first connecting plate 211 and a second side beam 12b; a second gap 14222 is provided between the third connecting plate 213 and the side beam 12. Specifically, a second gap 14222 is provided between the third connecting plate 213 and the other second side beam 12b.

[0072] Referring to Figure 1 as shown, the battery pack may further include a first heat exchange pipe 61 and a second heat exchange pipe 62. The first heat exchange pipe 61 may be a water inlet pipe, and the second heat exchange pipe 62 may be a water outlet pipe. Of course, it is also possible that the first heat exchange pipe 61 is a water outlet pipe and the second heat exchange pipe 62 is a water inlet pipe.

[0073] The first heat exchange pipe 61 passes through the first gap 14221. A part of the first heat exchange pipe 61 is arranged in the first gap 14221. One end of the first heat exchange pipe 61 extends into the battery compartment 1421 and is connected to the water inlet end of the heat exchange component in the battery compartment 1421; the opposite end of the first heat exchange pipe 61 extends outside the battery box 1 and is connected to the heat exchange mechanism outside the battery box 1. Specifically, the opposite end of the first heat exchange pipe 61 can pass through the bottom plate and extend outside the battery box 1.

[0074] The second heat exchange pipe 62 penetrates through the second gap 14222, a part of the second heat exchange pipe 62 is disposed within the second gap 14222, one end of the second heat exchange pipe 62 extends into the battery compartment 1421 and is connected to the water outlet end of the heat exchange component within the battery compartment 1421; the opposite end of the second heat exchange pipe 62 extends outside the battery box body 1 and is connected to the heat exchange mechanism outside the battery box body 1. Specifically, the opposite end of the second heat exchange pipe 62 can penetrate through the bottom plate and extend outside the battery box body 1.

[0075] With such an arrangement, the first heat exchange pipe 61 and the second heat exchange pipe 62 can be separated from the electronic devices 5 within the electrical compartment 141, that is, the separation of water and electricity is achieved. Even if there are defects such as water leakage in the first heat exchange pipe 61 and the second heat exchange pipe 62, the safety of the battery pack can be ensured; moreover, the gap between the electrical compartment 141 and the side beam 12 is fully utilized to further improve the space utilization rate of the battery pack.

[0076] Certainly, in some other exemplary embodiments of the present disclosure, it may also be that the first heat exchange pipe 61 penetrates through the second gap 14222 and the second heat exchange pipe 62 penetrates through the first gap 14221. It may also be that only the first gap 14221 or the second gap 14222 is provided. In this case, both the first heat exchange pipe 61 and the second heat exchange pipe 62 penetrate through the first gap 14221, that is, a part of both the first heat exchange pipe 61 and the second heat exchange pipe 62 is disposed within the first gap 14221; or, both the first heat exchange pipe 61 and the second heat exchange pipe 62 penetrate through the second gap 14222, that is, a part of both the first heat exchange pipe 61 and the second heat exchange pipe 62 is disposed within the second gap 14222.

[0077] In the present exemplary embodiment, with reference to Figure 2 、 Figure 3 and Figure 6 as shown, the isolation component 2 may further include an isolation beam 22. The isolation beam 22 is disposed within the non-electrical compartment 142, the isolation beam 22 is in contact with the second connecting plate 212, and the isolation beam 22 is connected between two relatively arranged second side beams 12b, such that the isolation beam 22 divides the non-electrical compartment 142 into a battery compartment 1421 and a heat exchange connection compartment 1422. The battery compartment 1421 is formed by enclosing the side beam 12 and the isolation beam 22, and the heat exchange connection compartment 1422 is formed by enclosing the side beam 12, the isolation beam 22, and the isolation plate 21. The heat exchange connection compartment 1422 includes the above-mentioned first gap 14221 and / or second gap 14222, that is, the heat exchange connection compartment 1422 may include the first gap 14221 or the second gap 14222, and the heat exchange connection compartment 1422 may also include the first gap 14221 and the second gap 14222.

[0078] Since the partition plate 21 is thin and has low strength, attaching the partition beam 22 to the second connection plate 212 can increase the strength of the partition plate 21 and prevent the partition plate 21 from being squeezed and deformed by the pressure generated during the foaming of the foaming adhesive.

[0079] In this case, the second part 42 is located on the side of the partition beam 22 and the second connection plate 212 away from the bottom plate. The area of the surface of the second connection plate 212 away from the bottom plate 11 is small, and the supporting effect on the second part 42 is poor. The partition beam 22 with a larger area can well support the second part 42 and prevent the second part 42 from tilting, so as to ensure the sealing isolation between the electrical compartment 141 and the battery compartment 1421.

[0080] In the present exemplary embodiment, referring to Figure 1 and Figure 5 as shown, the battery pack may further include a fixing plate 7. The fixing plate 7 is fixedly connected between the first connection plate 211 and the third connection plate 213. Specifically, one end of the fixing plate 7 may be fixedly connected to the first connection plate 211 by screws, and the opposite end of the fixing plate 7 may be fixedly connected to the third connection plate 213 by screws; moreover, the fixing plate 7 is parallel to the bottom plate 11 to ensure the stability of the fixed electronic device 5. The fixing plate 7 is used to fix at least part of the electronic device 5. For example, the fixing plate 7 may be used to fix the BMS and BDU of the electronic device 5, while other electronic devices 5 are not fixed on the fixing plate 7; the fixing plate 7 may also be used to fix all the electronic devices 5. The electronic device 5 may also be fixed to the fixing plate 7 by screws. Fixing the BMS and BDU on the fixing plate 7 is convenient for disassembly and replacement; moreover, it can avoid interference between the BMS and the BDU.

[0081] In the present exemplary embodiment, referring to Figure 1 and Figure 7As shown in the figure, the battery pack may further include a high-voltage conductive part 81, a first insulating part 91, a low-voltage conductive part 82, and a second insulating part 92. One end of the high-voltage conductive part 81 is connected inside the battery compartment 1421. The high-voltage conductive part 81 extends across the side of the isolation component 2 facing away from the bottom plate 11 to the electrical compartment 141, such that a part of the high-voltage conductive part 81 is located between the isolation component 2 and the rubber sealing strip 4. The high-voltage conductive part 81 is connected to the high-voltage connector 51. Specifically, the high-voltage conductive part 81 may include a high-voltage positive conductive bus 811 and a high-voltage negative conductive bus 812. One end of the high-voltage positive conductive bus 811 extends into the battery compartment 1421 and is connected to the positive electrode of the single battery 101. The high-voltage positive conductive bus 811 extends across the isolation beam 22 and the side of the isolation plate 21 facing away from the bottom plate 11 to the electrical compartment 141 and is connected to the high-voltage connector 51. One end of the high-voltage negative conductive bus 812 extends into the battery compartment 1421 and is connected to the negative electrode of the single battery 101. The high-voltage negative conductive bus 812 extends across the isolation beam 22 and the side of the isolation plate 21 facing away from the bottom plate 11 to the electrical compartment 141 and is connected to the high-voltage connector 51.

[0082] The first insulating part 91 is arranged between the high-voltage conductive part 81 and the isolation component 2. Specifically, two first insulating parts 91 may be provided. One first insulating part 91 is arranged between the high-voltage positive conductive bus 811 and the isolation component 2, and the other first insulating part 91 is arranged between the high-voltage negative conductive bus 812 and the isolation component 2. Through the first insulating part 91, the high-voltage conductive part 81 can be insulated from the isolation component 2, and it can also play a supporting role for the high-voltage conductive part 81.

[0083] One end of the low-voltage conductive part 82 is connected inside the battery compartment 1421. The low-voltage conductive part 82 extends across the side of the isolation component 2 facing away from the bottom plate 11 to the electrical compartment 141, such that a part of the low-voltage conductive part 82 is located between the isolation component 2 and the rubber sealing strip 4. The low-voltage conductive part 82 is connected to the low-voltage connector 52. Specifically, the low-voltage conductive part 82 may include a flexible circuit board. The low-voltage conductive part 82 is used to collect the voltage signal and temperature signal of the single battery 101. One end of the low-voltage conductive part 82 extends into the battery compartment 1421 and is connected to the electrode of the single battery 101. The low-voltage conductive part 82 extends across the isolation beam 22 and the side of the isolation plate 21 facing away from the bottom plate 11 to the electrical compartment 141 and is connected to the low-voltage connector 52.

[0084] The second insulating part 92 is arranged between the low-voltage conductive part 82 and the isolation component 2. Specifically, the number of the second insulating parts 92 is the same as the number of the low-voltage conductive parts 82. One second insulating part 92 is arranged between one low-voltage conductive part 82 and the isolation component 2. Through the second insulating part 92, the low-voltage conductive part 82 can be insulated from the isolation component 2, and it can also play a supporting role for the low-voltage conductive part 82.

[0085] In the present exemplary embodiment, refer to Figure 7 As shown, the high-voltage conductive part 81 is fixedly and insulatingly connected to the end of the electrical compartment 141 and the isolation assembly 2. Specifically, the high-voltage conductive part 81 is bent downward at the end of the electrical compartment 141. An insulating plate is provided between the end of the high-voltage conductive part 81 at the electrical compartment 141 and the isolation plate 21 to insulate and isolate the high-voltage conductive part 81 from the isolation plate 21. Moreover, the high-voltage conductive part 81, the insulating plate, and the isolation plate 21 are fixedly connected by screws or pins.

[0086] Refer to Figure 7 As shown, the low-voltage conductive part 82 is fixedly and insulatingly connected to the end of the electrical compartment 141 and the isolation assembly 2. Specifically, the battery pack may further include a low-voltage insulating buckle 102, and the low-voltage insulating buckle 102 is fixed to the isolation assembly. For example, the low-voltage insulating buckle 102 can be fixed to the isolation plate of the isolation assembly by screws or pins; the low-voltage conductive part 82 at the end of the electrical compartment 141 is fixed to the low-voltage insulating buckle 102. For example, a card slot is provided on the low-voltage insulating buckle 102, and the low-voltage conductive part 82 at the end of the electrical compartment 141 is bent downward and extends into the card slot, so as to fixedly connect the low-voltage conductive part 82 at the end of the electrical compartment 141 to the low-voltage insulating buckle 102.

[0087] With such a setting, it is convenient to install and fix the high-voltage conductive part 81 and the low-voltage conductive part 82.

[0088] The material of the low-voltage insulating buckle 102 can be plastic, and the material of the screws or pins can also be plastic. Plastic has a small density and good insulation performance, which can not only meet the insulation requirements but also meet the energy density requirements of the battery pack.

[0089] The "parallel" and "perpendicular" mentioned in the present application not only can be completely parallel and perpendicular, but also can have a certain error; for example, if the included angle between the two is greater than or equal to 0° and less than or equal to 5°, it is considered that the two are parallel to each other; if the included angle between the two is greater than or equal to 85° and less than or equal to 95°, it is considered that the two are perpendicular to each other.

[0090] After considering the specification and practicing the disclosed utility model herein, those skilled in the art will readily think of other embodiments of the present disclosure. This application aims to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include the common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A battery pack, characterized in that, Including: A battery box body, including a bottom plate and a protective cover which are oppositely arranged, and side beams connected between the bottom plate and the protective cover, the battery box body having a receiving cavity; An isolation component, arranged inside the battery box body, the isolation component dividing the receiving cavity into at least an electrical compartment and a battery compartment; A potting glue part, arranged inside the battery compartment; A rubber dam, arranged on a side of the isolation component surrounding the electrical compartment away from the bottom plate, and a side of the rubber dam away from the isolation component abuts against the protective cover; Electronic devices, a high-voltage connector and a low-voltage connector, arranged inside the electrical compartment.

2. The battery pack according to claim 1, characterized in that In a third direction, the sum of the thickness of the rubber dam and the height of the isolation component surrounding the electrical compartment is H1, the distance between a side of the side beam away from the bottom plate and the bottom plate is H2, and the difference between H1 and H2 is greater than or equal to 3 mm and less than or equal to 20 mm, and the third direction is perpendicular to the bottom plate.

3. The battery pack according to claim 1, characterized in that The isolation component includes: An isolation board, the isolation board dividing the receiving cavity into an electrical compartment and a non-electrical compartment, the battery compartment being a part of the non-electrical compartment; the isolation board includes a first connecting plate, a second connecting plate and a third connecting plate which are sequentially connected; the first connecting plate, the second connecting plate and the third connecting plate are all perpendicular to the bottom plate, and the third connecting plate and the first connecting plate are on the same side of the second connecting plate, and the first connecting plate, the second connecting plate and the third connecting plate and the side beam enclose to form the battery compartment; the rubber dam includes: A first part, located on a side of the first connecting plate away from the bottom plate; A second part, connected to one end of the first part, the second part being located on a side of the second connecting plate away from the bottom plate; A third part, connected to an end of the second part away from the first part, the third part being located on a side of the third connecting plate away from the bottom plate.

4. The battery pack according to claim 3, characterized in that, The isolation board further includes: A first bending plate, connected to a side of the first connecting plate away from the bottom plate, the first bending plate being parallel to the bottom plate, and the first part being located on a side of the first bending plate away from the bottom plate; A third bending plate, connected to a side of the third connecting plate away from the bottom plate, the third bending plate being parallel to the bottom plate, and the third part being located on a side of the third bending plate away from the bottom plate.

5. The battery pack according to claim 3, wherein, A first gap is provided between the first connecting plate and the side beam, and / or a second gap is provided between the third connecting plate and the side beam; the battery pack further includes: A first heat exchange pipe, penetrating through the first gap or the second gap, one end of the first heat exchange pipe extending into the battery compartment, and the opposite end of the first heat exchange pipe extending outside the battery box body; A second heat exchange pipe, penetrating through the first gap or the second gap, one end of the second heat exchange pipe extending into the battery compartment, and the opposite end of the second heat exchange pipe extending outside the battery box body.

6. The battery pack according to claim 3, wherein, The isolation board further includes: The fourth connecting plate is connected to one end of the first connecting plate facing away from the second connecting plate, and the fourth connecting plate and the second connecting plate are located on opposite sides of the first connecting plate. The fourth connecting plate is perpendicular to the bottom plate and fixedly connected to the side beam; The fifth connecting plate is connected to one end of the third connecting plate facing away from the second connecting plate, and the fifth connecting plate and the second connecting plate are located on opposite sides of the third connecting plate. The fifth connecting plate is perpendicular to the bottom plate and fixedly connected to the side beam.

7. The battery pack according to claim 3, characterized in that, The battery pack further includes: A fixing plate fixedly connected between the first connecting plate and the third connecting plate, and the fixing plate is used to fix at least part of the electronic device.

8. The battery pack according to claim 3, wherein, The isolation assembly further includes: An isolation beam is disposed in the non-electrical compartment. The isolation beam is in contact with the second connecting plate. The isolation beam divides the non-electrical compartment into a battery compartment and a heat exchange connection compartment. The second part is located on the side of the isolation beam and the second connecting plate facing away from the bottom plate.

9. The battery pack according to any one of claims 1 to 8, characterized in that, The battery pack further includes: A high-voltage conductive part, one end of the high-voltage conductive part is connected in the battery compartment, the high-voltage conductive part extends across the side of the isolation assembly facing away from the bottom plate to the electrical compartment and is connected to the high-voltage connector. The end of the high-voltage conductive part in the electrical compartment is insulated and fixedly connected to the isolation assembly; A first insulating member is disposed between the high-voltage conductive part and the isolation assembly; A low-voltage conductive part, one end of the low-voltage conductive part is connected in the battery compartment, the low-voltage conductive part extends across the side of the isolation assembly facing away from the bottom plate to the electrical compartment and is connected to the low-voltage connector. The end of the low-voltage conductive part in the electrical compartment is insulated and fixedly connected to the isolation assembly; A second insulating member is disposed between the low-voltage conductive part and the isolation assembly; A low-voltage insulating buckle is fixed to the isolation assembly, and the end of the low-voltage conductive part in the electrical compartment is fixed to the low-voltage insulating buckle.

10. The battery pack according to any one of claims 1 to 8, characterized in that, The compression stress of the rubber strip is greater than or equal to 3 KPA and less than or equal to 110 KPA.

Images