Battery box and battery pack

Abstract

The utility model relates to a battery box and a battery pack. The battery box comprises a box body; the box cover covers the box body, and a containing cavity is defined by the box cover and the box body; the sealing element is arranged between the box body and the box cover and seals the accommodating cavity; and the partition piece is arranged between the box body and the box cover, part of the partition piece is located on the side, close to the containing cavity, of the sealing piece, and part of the partition piece is located on the side, away from the containing cavity, of the sealing piece. When the box body and the box cover need to be separated, a user can pull the part, located on the side, away from the containing cavity, of the dividing piece outwards, and when the part, located on the side, close to the containing cavity, of the dividing piece is pulled to be pulled outwards, the sealing piece can be cut so that the box body and the box cover can be separated conveniently, no external tool needs to be used, operation is convenient, and practicability is high. And the battery in the accommodating cavity cannot be damaged, so that thermal runaway is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery box and a battery pack. Background Art

[0002] In the immersion cooling thermal management method of batteries, a coolant for the batteries to immerse in, such as silicone oil, is placed in the battery box, and the box body and the box cover of the battery box need to be adhesively sealed to prevent the coolant from leaking out.

[0003] However, affected by the good elongation rate of the colloid, once the box cover and the box body are adhesively stabilized, it will be difficult to separate the box cover and the box body for maintenance and other operations. If an external cutting tool is used to cut inward to split the box cover and the box body, it is easy to damage the batteries inside the battery box during this period, thus triggering thermal runaway. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a battery box and a battery pack for the above problems to facilitate the separation of the box body and the box cover.

[0005] The utility model provides a battery box, including: a box body; a box cover covering the box body and enclosing a receiving cavity with the box body; a sealing member disposed between the box body and the box cover and sealing the receiving cavity; and a dividing member disposed between the box body and the box cover, with part of the dividing member located on the side of the sealing member close to the receiving cavity and part of the dividing member located on the side of the sealing member away from the receiving cavity.

[0006] In the above battery box, when it is necessary to separate the box body and the box cover, the user can pull out the part of the dividing member located on the side of the sealing member away from the receiving cavity outward. When the part of the dividing member located on the side of the sealing member close to the receiving cavity is pulled out outward under traction, it will cut the sealing member, so as to facilitate the separation of the box body and the box cover. There is no need to use external tools, the operation is convenient, and it will not damage the batteries placed in the receiving cavity, avoiding triggering thermal runaway.

[0007] In one embodiment, part of the dividing member located on the side of the sealing member close to the receiving cavity further includes a fixing portion, and the fixing portion is fixed to the box body or the box cover.

[0008] With such a setting, the fixing portion can prevent the part of the dividing member located on the side of the sealing member close to the receiving cavity from being easily pulled out of the battery box before the cutting is completed and unable to cut the sealing member.

[0009] In one embodiment, the battery box further includes a force-applying member, and the part of the dividing member located on the side of the sealing member away from the receiving cavity is connected to the force-applying member.

[0010] With such a setting, the force - applying member can facilitate the user to apply force, thus facilitating the pulling and dividing member.

[0011] In one embodiment, the dividing member includes a dividing portion and a protruding portion. The dividing portion is located on the side of the sealing member close to the accommodating cavity, and the protruding portion extends from the dividing portion to the side of the sealing member away from the accommodating cavity.

[0012] With such a setting, the user can pull outwards the part of the protruding portion extending outside the accommodating cavity, so that the dividing portion is pulled outwards under traction and cuts the sealing member.

[0013] In one embodiment, the part of the dividing member located on the side of the sealing member close to the accommodating cavity further includes a fixing portion, and the fixing portion is fixed to the box body or the box cover; both ends of the dividing portion are respectively connected to the fixing portion and the protruding portion.

[0014] With such a setting, when the user pulls out the protruding portion outwards, the dividing portion is gradually pulled outwards from the end connected to the protruding portion towards the end connected to the fixing portion and cuts the sealing member.

[0015] In one embodiment, the sealing member is arranged in a ring shape and is arranged around the accommodating cavity.

[0016] With such a setting, the ring - shaped sealing member can completely seal the gap between the box body and the box cover, thus ensuring the sealing effect of the sealing member on the accommodating cavity.

[0017] In one embodiment, the dividing portion surrounds the accommodating cavity for at least one circle.

[0018] With such a setting, the dividing portion can cut every part of the sealing member surrounding the accommodating cavity to better complete the cutting.

[0019] In one embodiment, the box body and / or the box cover is / are fixed with a limiting member, and the limiting member blocks on the side of the dividing portion close to the accommodating cavity to limit the dividing portion from shifting towards the direction close to the accommodating cavity.

[0020] With such a setting, the limiting member can facilitate the positioning of the dividing portion when the dividing portion surrounds the accommodating cavity, and can also prevent the dividing portion from shifting towards the direction close to the accommodating cavity during assembly or being pulled, so as not to damage the battery placed in the accommodating cavity.

[0021] In one embodiment, the sealing member is arranged in a ring shape and is arranged around the accommodating cavity; the dividing portion surrounds the accommodating cavity for at least one circle; the number of the limiting members is multiple, and the multiple limiting members are arranged at intervals around the accommodating cavity, and the dividing portion is wound around the side of each limiting member away from the accommodating cavity.

[0022] With such an arrangement, when the dividing part is wound around the side of each limiting part away from the accommodating cavity, an annular structure surrounding the accommodating cavity can be formed.

[0023] In one embodiment, the dividing member is arranged as a wire.

[0024] With such an arrangement, the wire has high strength and good cutting effect; the wire can be bent and deformed, so as to facilitate winding the wire around the accommodating cavity; the wire also has strong toughness and can withstand large tensile force and bending force to prevent breakage when the user pulls the wire outwards.

[0025] The present utility model also provides a battery pack, including a battery and the battery box as described above, and the battery is arranged in the accommodating cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 The front view schematic diagram of the battery pack according to an embodiment of the present utility model;

[0028] Figure 2 Provided by the present utility model Figure 1 The explosion schematic diagram of the battery pack;

[0029] Figure 3 Provided by the present utility model Figure 1 The three-dimensional structure schematic diagram of the battery pack without the box cover provided by the present utility model;

[0030] Figure 4 Provided by the present utility model Figure 3 The top view schematic diagram of the battery pack provided by the present utility model;

[0031] Figure 5 Provided by the present utility model Figure 4 The enlarged schematic diagram at position A in

[0032] Figure 6 Provided by the present utility model Figure 4 The enlarged schematic diagram at position B in

[0033] Figure 7 Provided by the present utility model Figure 1 The sectional view along C-C;

[0034] Figure 8Provided by the present utility model Figure 7 An enlarged schematic view of part D in Figure 7

[0035] Reference numerals: 1, box body; 2, box cover; 3, accommodation cavity; 4, seal; 5, dividing member; 51, dividing part; 52, protruding part; 53, fixing part; 6, limiting member; 7, force applying member; 8, battery. Specific embodiments

[0036] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0037] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the description of the present application are only for illustrative purposes and do not represent the only implementation manner.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0039] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0040] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the related listed items.

[0041] In the immersion cooling thermal management method of a battery, a coolant for the battery to immerse in, such as silicone oil, is placed in a battery box. The box body and the box cover of the battery box need to be adhesively sealed to prevent the coolant from leaking out. However, affected by the good elongation rate of the colloid, once the box cover and the box body are adhesively stabilized, it will be difficult to separate the box cover and the box body for maintenance and other operations. If an external cutting tool is used to cut inward to split the box cover and the box body, the battery inside the battery box is easily damaged during this process, thus triggering thermal runaway.

[0042] To solve the above problems, as Figures 1 to 8 shown, the present utility model first provides a battery box to facilitate the separation of the box body 1 and the box cover 2.

[0043] As Figures 1 to 3 shown, specifically, the battery box includes a box body 1, a box cover 2, a seal 4 and a dividing member 5, wherein: the box cover 2 covers the box body 1 and encloses a containing cavity 3 with the box body 1; the seal 4 is arranged between the box body 1 and the box cover 2 and seals the containing cavity 3; the dividing member 5 is arranged between the box body 1 and the box cover 2, and part of the dividing member 5 is located on the side of the seal 4 close to the containing cavity 3, and part of the dividing member 5 is located on the side of the seal 4 away from the containing cavity 3. Among them, the containing cavity 3 is used to contain the battery 8, and a coolant such as silicone oil can be injected into the containing cavity 3, and the seal 4 can prevent the coolant in the containing cavity 3 from leaking out; part of the dividing member 5 located on the side of the seal 4 close to the containing cavity 3 can be located in the containing cavity 3, and part of the dividing member 5 located on the side of the seal 4 away from the containing cavity 3 is located outside the battery box.

[0044] In the battery box provided by the embodiment of the present utility model, when it is necessary to separate the box body 1 and the box cover 2, the user can pull out the part of the dividing member 5 located on the side of the seal 4 away from the containing cavity 3 outward. When the part of the dividing member 5 located on the side of the seal 4 close to the containing cavity 3 is pulled out outward under traction, it will cut the seal 4 to facilitate the separation of the box body 1 and the box cover 2, without the need to use external tools, the operation is convenient, and it will not cause damage to the battery 8 placed in the containing cavity 3, avoiding triggering thermal runaway.

[0045] As Figure 2As shown, in one embodiment, a recessed accommodating cavity 3 with an opening is formed inside the box body 1, and the box cover 2 covers the opening of the accommodating cavity 3. Of course, in other embodiments, it may also be that the box cover 2 forms a recessed accommodating cavity 3 with an opening, and the box body 1 covers the opening of the accommodating cavity 3; or, both the box body 1 and the box cover 2 are recessed to form cavities with openings, and the cavity opening of the box body 1 is opposite to the cavity opening of the box cover 2 to jointly form the accommodating cavity 3.

[0046] As Figure 2 、 Figures 4 to 5 shown, in one embodiment, a partial dividing member 5 on the side of the seal 4 close to the accommodating cavity 3 further includes a fixing portion 53, and the fixing portion 53 is fixed to the box body 1 or the box cover 2. When the dividing member 5 is pulled outwards, the fixing portion 53 can prevent the partial dividing member 5 on the side of the seal 4 close to the accommodating cavity 3 from being easily pulled out of the battery box before the division is completed and thus unable to cut the seal 4, thereby ensuring the cutting effect of the dividing member 5 on the seal 4.

[0047] As Figures 4 to 5 shown, in one embodiment, the battery box further includes a force-applying member 7, and a part of the dividing member 5 on the side of the seal 4 away from the accommodating cavity 3 is connected to the force-applying member 7. The user can pull out the dividing member 5 outwards by pulling the force-applying member 7, and the force-applying member 7 can facilitate the user to apply force, thereby facilitating the pulling out of the dividing member 5.

[0048] In one embodiment, the force-applying member 7 can be set as a pull ring, and the user can hold the pull ring with a finger and pull out the dividing member 5 outwards to avoid slipping. Of course, in other embodiments, the force-applying member 7 can also be set as a handle, or set as structures such as protrusions and grooves on a part of the dividing member 5 on the side of the seal 4 away from the accommodating cavity 3, as long as it can facilitate the user to apply force to the part of the dividing member 5 on the side of the seal 4 away from the accommodating cavity 3, and the embodiments of the present invention do not make specific limitations here.

[0049] As Figure 2 、 Figures 4 to 5 shown, in one embodiment, the dividing member 5 includes a dividing portion 51 and an extending portion 52. The dividing portion 51 is located on the side of the seal 4 close to the accommodating cavity 3, and the extending portion 52 extends from the dividing portion 51 towards the side of the seal 4 away from the accommodating cavity 3. Among them, one end of the extending portion 52 is located inside the accommodating cavity 3 and is connected to the dividing portion 51, and the other end of the extending portion 52 passes through the seal 4, between the seal 4 and the box body 1, or between the seal 4 and the box cover 2 and extends out of the battery box. In this way, the user can pull out the part of the extending portion 52 extending out of the battery box outwards, so that the dividing portion 51 is pulled outwards under traction and cuts the seal 4. Specifically, the force-applying member 7 can be connected to the end of the extending portion 52 away from the dividing portion 51 to pull out the part of the extending portion 52 extending out of the battery box outwards through the force-applying member 7.

[0050] As Figure 4 shown, in one embodiment, both ends of the dividing part 51 are respectively connected to the fixing part 53 and the protruding part 52. When the user pulls out the protruding part 52 outward, the dividing part 51 is gradually pulled out outward from the end connected to the protruding part 52 toward the end connected to the fixing part 53 and cuts the seal 4.

[0051] Of course, in other embodiments, it is also possible that both ends of the dividing part 51 are respectively connected with a protruding part 52, and the fixing part 53 is connected to any position of the dividing part 51 except the two ends. The user can pull out the two protruding parts 52 outward simultaneously or in sequence, and the dividing part 51 is gradually pulled out outward from both ends toward the position where the dividing part 51 is connected to the fixing part 53 and cuts the seal 4.

[0052] As Figures 2 to 4 shown, in one embodiment, the seal 4 is arranged in a ring shape and is arranged around the accommodating cavity 3. The ring-shaped seal 4 can completely seal the gap between the box body 1 and the box cover 2, thereby ensuring the sealing effect of the seal 4 on the accommodating cavity 3. Specifically, the seal 4 can be sealant, and the sealant is coated on the box body 1 or the box cover 2 to form a ring structure; alternatively, the seal 4 can also be a sealing ring, and both sides of the sealing ring are respectively attached to the box body 1 and the box cover 2.

[0053] Of course, in other embodiments, the seal 4 can also be arranged in other structures such as a multi-segment seal and is arranged around the accommodating cavity 3. As long as the accommodating cavity 3 can be sealed, the embodiments of the present invention do not make specific limitations here.

[0054] As Figures 2 to 4 shown, in one embodiment, when the seal 4 is arranged in a ring shape and is arranged around the accommodating cavity 3, the dividing part 51 surrounds the accommodating cavity 3 at least once. In this way, the dividing part 51 can cut every part of the seal 4 surrounding the accommodating cavity 3 to better complete the cutting, so that the box body 1 and the box cover 2 can be better separated, and the phenomenon that the box body 1 and the box cover 2 are still difficult to separate due to some seals 4 not being cut is avoided.

[0055] As Figure 2 , Figure 4 and Figure 6As shown, in one embodiment, the box body 1 is fixed with a limiting member 6, and the limiting member 6 blocks on the side of the dividing portion 51 close to the accommodating cavity 3 to limit the deviation of the dividing portion 51 in the direction close to the accommodating cavity 3. In this way, the limiting member 6 can facilitate the positioning of the dividing portion 51 when the dividing portion 51 is wound around the accommodating cavity 3, and at the same time can also prevent the dividing portion 51 from deviating in the direction close to the accommodating cavity 3 during assembly or being pulled out, so as to damage the battery 8 placed in the accommodating cavity 3, thereby protecting the battery 8. Specifically, when the box cover 2 is covered on the top of the box body 1, the limiting member 6 is arranged on the top wall of the box body 1, so as to prevent the dividing portion 51 from disengaging from the limiting member 6 and improve the stability of the dividing portion 51 arranged around the accommodating cavity 3.

[0056] Of course, in other embodiments, it may also be that the box cover 2 is fixed with a limiting member 6; or, part of the limiting members 6 are fixed to the box body 1 and part of the limiting members 6 are fixed to the box cover 2.

[0057] As Figures 6 to 8 shown, in one embodiment, when the sealing member 4 is arranged in a ring shape and arranged around the accommodating cavity 3, and the dividing portion 51 winds around the accommodating cavity 3 for at least one circle, the number of the limiting members 6 is multiple, and the multiple limiting members 6 are arranged at intervals around the accommodating cavity 3, and the dividing portion 51 is wound around the side of each limiting member 6 far from the accommodating cavity 3. The connection lines between the multiple limiting members 6 can form an annular structure, and the annular structure is arranged around the accommodating cavity 3, so that when the dividing portion 51 is wound around the side of each limiting member 6 far from the accommodating cavity 3, an annular structure arranged around the accommodating cavity 3 can also be formed. Specifically, when the shapes of the box body 1 and the box cover 2 are rectangular, the number of the limiting members 6 can be four, and the four limiting members 6 are respectively arranged at the four corners of the opening of the box body 1 or the box cover 2. Of course, the number of the limiting members 6 can also be set to three, five or more according to the shapes of the box body 1 and the box cover 2, and the embodiments of the present invention do not make specific limitations here.

[0058] In other embodiments, the limiting member 6 can also be arranged as an annular structure and arranged around the accommodating cavity 3, and the dividing portion 51 is arranged around the limiting member 6 and located inside the sealing member 4. The limiting member 6 can also be arranged in other structures according to the shapes of the sealing member 4 and the dividing portion 51, as long as it can limit the deviation of the dividing portion 51 in the direction close to the accommodating cavity 3, and the embodiments of the present invention do not make specific limitations here.

[0059] In one embodiment, the dividing member 5 is provided as a wire, such as an iron wire, a steel wire, etc. The wire has high strength and good cutting effect; and the wire is bendable, so as to facilitate winding the wire around the accommodating cavity 3; at the same time, the wire also has strong toughness and can withstand large tensile force and bending force to prevent breakage when the user pulls the wire outwards. Of course, in other embodiments, the dividing member 5 can also be made of other materials such as plastic, as long as the dividing member 5 can cut the sealing member 4 when being pulled outwards, and the embodiments of the present utility model do not make specific limitations here.

[0060] As Figures 1 to 2 shown, an embodiment of the present utility model further provides a battery pack, including a battery 8 and the above-mentioned battery box, and the battery 8 is arranged in the accommodating cavity 3. A coolant such as silicone oil can be injected into the accommodating cavity 3 to achieve the cooling thermal management of the battery 8.

[0061] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0062] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limitations on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A battery box, characterized in that: include: Box body (1); A box cover (2) is covered on the box body (1) and is arranged together with the box body (1) to form a receiving cavity (3); a sealing member (4) disposed between the box body (1) and the box cover (2) and sealing the accommodating cavity (3); and The partition (5) is arranged between the box body (1) and the box cover (2), with part of the partition (5) being located on a side of the sealing member (4) close to the accommodating chamber (3), and part of the partition (5) being located on a side of the sealing member (4) away from the accommodating chamber (3).

2. The battery box according to claim 1, characterized in that: The portion of the dividing member (5) located on the side of the sealing member (4) close to the accommodating chamber (3) further includes a fixing portion (53), wherein the fixing portion (53) is fixed to the box body (1) or the box cover (2).

3. The battery box according to claim 1, characterized in that: The battery box further comprises a force-applying member (7), and a portion of the dividing member (5) located on a side of the sealing member (4) away from the accommodating cavity (3) is connected to the force-applying member (7).

4. The battery box according to claim 1, characterized in that: The dividing piece (5) comprises a dividing portion (51) and a protruding portion (52); the dividing portion (51) is located on a side of the sealing piece (4) close to the accommodating cavity (3); and the protruding portion (52) extends from the dividing portion (51) to a side of the sealing piece (4) away from the accommodating cavity (3).

5. The battery box according to claim 4, characterized in that: The portion of the dividing member (5) located on the side of the sealing member (4) close to the accommodating chamber (3) further includes a fixing portion (53), wherein the fixing portion (53) is fixed to the box body (1) or the box cover (2); and the two ends of the dividing portion (51) are respectively connected to the fixing portion (53) and the extending portion (52).

6. The battery box according to claim 4, characterized in that: The sealing member (4) is arranged in an annular shape and is arranged around the accommodating cavity (3).

7. The battery box according to claim 6, characterized in that: The dividing portion (51) surrounds the accommodating cavity (3) at least once.

8. The battery box according to claim 4, characterized in that: The box body (1) and / or the box cover (2) are fixed with a limiting member (6), and the limiting member (6) blocks a side of the dividing portion (51) close to the accommodating cavity (3) to limit the displacement of the dividing portion (51) towards a direction close to the accommodating cavity (3).

9. The battery box according to claim 8, characterized in that: The sealing member (4) is arranged in an annular shape and is arranged around the accommodating cavity (3); the dividing portion (51) surrounds the accommodating cavity (3) at least once; there are a plurality of the limiting members (6), and the plurality of limiting members (6) are arranged at intervals around the accommodating cavity (3); the dividing portion (51) is arranged around a side of each limiting member (6) away from the accommodating cavity (3).

10. The battery box according to any one of claims 1 to 9, characterized in that: The dividing piece (5) is configured as a metal wire.

11. A battery pack, characterized in that: It comprises a battery (8) and a battery box as claimed in any one of claims 1 to 10, wherein the battery (8) is arranged in the accommodating cavity (3).

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