Batteries, battery packs and vehicles

Abstract

Disclosed is a battery, a battery pack, and a vehicle, the housing including a housing body, a first end plate, and a second end plate, the first end plate, the second end plate, and the housing body enclosing a receiving cavity, the second end plate having an adhesive inlet formed therein, the cell assembly being disposed within the receiving cavity and including a first surface, a gap being present between the second end plate and the cell assembly, a sealing member being disposed within the gap, the sealing member dividing the gap into a first passage and a second passage, the adhesive inlet communicating with the first passage, an adhesive injection passage being disposed within the housing, the adhesive injection passage including the first passage and a third passage located between the first surface and an inner wall of the housing body, and a potting agent being disposed within the adhesive injection passage.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application is based on and claims priority from a Chinese patent application filed on November 24, 2021, bearing application number 202122911541.8, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of batteries, and more particularly to batteries, battery packs, and vehicles. [Background technology]

[0003] In related art, components such as cell assemblies are provided within a battery, and typically, a holder is provided within the battery to secure the components such as the cell assemblies, thereby achieving a fixed installation of the battery. However, providing a holder within the battery occupies space, complicates assembly, and is prone to loosening when the battery is subjected to vibration or other influences, affecting the safety performance of the battery. Therefore, some batteries achieve a fixed installation by injecting a potting agent into the battery, but the potting agent is highly fluid before hardening, and if it flows to other positions, it will affect the safety performance of the battery. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application aims to solve at least one of the technical problems in the prior art, and therefore, one object of the present application is to provide a battery, a battery pack, and a vehicle. [Means for solving the problem]

[0005] A battery according to a first embodiment of the present application includes a housing and a cell assembly, the housing including a housing main body and a first end plate and a second end plate facing each other in a longitudinal direction of the housing main body, the first end plate, the second end plate, and the housing main body enclosing a sealed storage cavity, the second end plate having an adhesive injection port formed in the second end plate, the cell assembly being disposed within the storage cavity and including a first surface facing one side of the housing main body in a height direction of the housing main body, a gap being formed between the second end plate and the cell assembly, a sealing member being disposed within the gap, the sealing member dividing the gap into a first passage and a second passage, the adhesive injection port communicating with the first passage, an adhesive injection passage being disposed within the housing, the adhesive injection passage including the first passage and a third passage located between the first surface and an inner wall of the housing main body, and a potting agent being disposed within the adhesive injection passage.

[0006] In the battery according to the embodiment of the present application, by providing an adhesive injection passage and a sealing member inside the housing, the sealing member forms a partition for the gap, allowing the potting agent injected from the adhesive injection port to flow through the first passage to the third passage, thereby filling the adhesive injection passage, realizing fixation of the cell assembly inside the battery, and improving the reliability of the battery's internal structure.

[0007] In some embodiments, the first end plate has an air suction port formed therein, the air suction port communicating with the adhesive injection passage such that the pressure within the adhesive injection passage is less than the pressure outside the housing.

[0008] In some embodiments, the second end plate further has an air inlet spaced apart from the adhesive injection port, the air inlet communicating with the second passage; the cell assembly further includes a second surface opposite the first surface; an air suction passage is provided within the housing, the air suction passage including the second passage, a fourth passage located between the second surface and an inner wall of the housing body, and a fifth passage located between the first end plate and the cell assembly, the fifth passage communicating with the air suction port.

[0009] In some embodiments, the adhesive inlet and the air suction port are opposite each other along the length of the housing.

[0010] In some embodiments, the cell assembly includes a third surface and a fourth surface located opposite each other along a width direction of the housing body, and at least an outer periphery of the fourth surface and at least an outer periphery of the third surface are in close contact with the housing body.

[0011] In some embodiments, the cell assembly includes a cell unit and a protective film, the protective film covering the outer peripheral side of the cell unit and open at both ends in the longitudinal direction of the housing body, and at least one through hole formed in the protective film, the through hole being provided on at least one side of the protective film facing the third passage.

[0012] In some embodiments, the housing has two outer surfaces that are opposite each other in the height direction and have a height D1, and the distance between the outer surface adjacent to the adhesive injection passage and the center of the adhesive injection port is D2, and D1 and D2 satisfy the relationship 10 mm≦D2≦0.25D1.

[0013] In some embodiments, the distance between one of the two outer surfaces adjacent to the adhesive injection passage and the center of the air inlet is D3, and D2 and D3 satisfy the relationship D2 + 18 mm ≦ D3 ≦ D2 + 22 mm.

[0014] In some embodiments, the cell assembly includes a cell unit, a cell holder, and an insulating member, the cell unit including a plurality of subunits arranged along the length of the housing and connected in series, the subunit among the plurality of subunits adjacent to the second end plate is a first subunit, the cell holder is fixed to one end of the first subunit facing the second end plate, the insulating member is provided between the cell holder and the second end plate, and the sealing member is interposed between the second end plate and the insulating member.

[0015] In some embodiments, one of the insulating member and the cell holder is provided with at least one locking hook, and the other of the insulating member and the cell holder is provided with at least one locking hole, and the locking hook is engaged within the locking hole.

[0016] In some embodiments, the height of the potting material in the height direction of the housing is D4, and D4 satisfies 0.8 mm≦D4≦1.5 mm.

[0017] A battery pack according to an embodiment of the second aspect of the present application includes the battery according to any one of the above embodiments.

[0018] A vehicle according to an embodiment of the third aspect of the present application includes the battery pack according to the above embodiment or the battery according to any one of the above embodiments.

[0019] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the present application. [Brief explanation of the drawings]

[0020] The above and / or additional aspects and advantages of the present application will become more apparent and easier to understand by describing examples with reference to the following drawings.

[0021] [Figure 1] 1 is a schematic diagram of a battery according to an embodiment of the present application. [Figure 2] FIG. 1 is an exploded perspective view of a battery according to an embodiment of the present application. [Figure 3] 1 is a schematic cross-sectional view of a battery according to an embodiment of the present application. [Figure 4] FIG. 4 is an enlarged view of part A in FIG. [Figure 5] 1 is a schematic diagram of a cell assembly according to an embodiment of the present application. [Figure 6] FIG. 6 is an enlarged view of part B in FIG. 5. [Figure 7] 1 is a schematic diagram of a cell assembly according to an embodiment of the present application. [Figure 8] FIG. 8 is an enlarged view of part C in FIG. [Figure 9] FIG. 2 is an exploded perspective view of a portion of a cell assembly according to an embodiment of the present application. [Figure 10] FIG. 10 is an enlarged view of a portion D in FIG. [Figure 11] 1 is a schematic diagram of a vehicle according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, embodiments of the present application will be described in detail, and the embodiments described with reference to the drawings are merely illustrative. Below, a battery 100 including a housing 10 and a cell assembly 20 according to an embodiment of the present application will be described with reference to Figures 1 to 10. In the description of the present application, the length direction refers to the left-right direction shown in Figure 2, the height direction refers to the up-down direction shown in Figure 2, and the width direction refers to the front-to-back direction shown in Figure 2.

[0023] As shown in Figures 1 to 9, the housing 10 includes a housing main body 16 and a first end plate 11 and a second end plate 12 that face each other in the longitudinal direction of the housing main body 16, and the first end plate 11, the second end plate 12 and the housing main body 16 surround a sealed storage cavity 17, and an adhesive injection port 14 is formed in the second end plate 12. The cell assembly 20 is disposed within the accommodating cavity 17 and includes a first surface 21, which faces one side of the housing body 16 in the height direction of the housing body 16. A gap 50 is provided between the second end plate 12 and the cell assembly 20. A sealing member 23 is provided within the gap 50. The sealing member 23 divides the gap 50 into a first passage a and a second passage b. The adhesive injection port 14 communicates with the first passage a. An adhesive injection passage 30 is provided within the housing 10. The adhesive injection passage 30 includes the first passage a and a third passage c located between the first surface 21 and the inner wall of the housing body 16. A potting agent 31 is provided within the adhesive injection passage 30.

[0024] As shown in FIGS. 1 to 3 , the first end plate 11 and the second end plate 12 may be located at both ends of the cell assembly 20 in the longitudinal direction, and the second end plate 12 has an adhesive inlet 14 formed therein. The cell assembly 20 is located within the receiving cavity 17, and the first surface 21 is the surface located below the cell assembly 20. The inner surface of the second end plate 12, the sealing member 23, and the cell assembly 20 collectively define a first passage a, and the first surface 21 of the cell assembly 20 and the inner surface of the lower part of the housing body 16 collectively define a third passage c. The adhesive injection passage 30 adjacent to the left side and communicating with the adhesive inlet 14 is the first passage a, and the adhesive injection passage 30 facing the first surface 21 is the third passage c.

[0025] As shown in FIGS. 2 to 4, a sealing member 23 is provided between the second end plate 12 and the cell assembly 20 to seal the gap between the second end plate 12 and the cell assembly 20. The sealing member 23 divides the gap 50, forming a first passage a and a second passage b on both the upper and lower sides. The sealing member 23 may be a foam, and a foam sealing member 23 has high elasticity and compressibility, thereby ensuring a blocking effect for the first passage a and the second passage b. For example, if the battery 100 is interfered with by an external factor such as vibration, the sealing member 23 can absorb the vibration without affecting the sealing effect.

[0026] In the battery 100 according to the embodiment of the present application, an adhesive injection passage 30 and a sealing member 23 are provided inside the housing 10, and the sealing member 23 forms a partition for the gap 50. Therefore, the potting agent 31 injected from the adhesive injection port 14 flows through the first passage a to the third passage c, filling the adhesive injection passage 30 and realizing fixation and sealing inside the battery 100, and enabling rapid positioning. This facilitates automated adhesive injection and improves the reliability of the internal structure of the battery 100.

[0027] As shown in Figure 3, the first end plate 11 has an air suction port 13 formed therein, which communicates with the adhesive injection passage 30 so that the pressure within the adhesive injection passage 30 is lower than the pressure outside the housing 10. In this way, both ends of the adhesive injection passage 30 communicate with the adhesive injection port 14 and the air suction port 13, respectively. Because the pressure within the adhesive injection passage 30 is lower than the atmospheric pressure outside the housing 10, the potting material 31 is able to enter the adhesive injection passage 30 through the adhesive injection port 14 and flow into the adhesive injection passage 30. By injecting the potting material 31 into the adhesive injection passage 30, the potting material 31 can fix multiple components within the battery 100 after hardening, thereby ensuring the structural reliability of the battery 100.

[0028] Negative pressure suction is applied to air suction port 13 to generate negative pressure in adhesive injection passage 30. Here, "negative pressure" refers to a gas pressure state lower than normal pressure. Potting material 31 is injected into housing 10 through adhesive injection port 14, and the suction force of the negative pressure allows potting material 31 to move from one end of adhesive injection passage 30 that communicates with adhesive injection port 14 to the other end of adhesive injection passage 30 that communicates with air suction port 13, thereby filling adhesive injection passage 30 with potting material 31.

[0029] As a result, by forming an air suction port 13 in the first end plate 11 and connecting the air suction port 13 to the adhesive injection passage 30, the pressure in the adhesive injection passage 30 can be reduced by suction through the air suction port 13, allowing the potting material 31 to flow smoothly into the adhesive injection passage 30, improving the adhesive injection efficiency while ensuring high flow uniformity of the potting material 31.

[0030] Furthermore, as shown in Figure 3, the second end plate 12 further has an air inlet 15 spaced apart from the adhesive injection port 14, the air inlet 15 communicating with the second passage b, the cell assembly 20 further includes a second surface 22 located opposite the first surface 21, and an air suction passage 40 is provided within the housing 10, the air suction passage 40 including the second passage b, a fourth passage d located between the second surface 22 and the inner wall of the housing 10, and a fifth passage e located between the first end plate 11 and the cell assembly 20, and the fifth passage e communicating with the air suction port 13.

[0031] The air suction passage 40 and the adhesive injection passage 30 are separated by a sealing member 23 on the second end plate 12 and are spaced apart in the height direction of the battery 100. Both ends of the air suction passage 40 communicate with the air inlet 15 and the air suction port 13, respectively, to form a passage for airflow.

[0032] As a result, by providing the air suction passage 40 within the housing 10 so that one end of the air suction passage 40 is connected to the air inlet 15 and the other end is connected to the air suction port 13, when negative pressure is suctioned through the air suction port 13, one end of the air suction passage 40 is connected to the outside via the air inlet 15, so that the air pressure within the air suction passage 40 becomes greater than the air pressure within the adhesive injection passage 30, preventing some of the potting material 31 in the adhesive injection passage 30 from flowing into the air suction passage 40, reducing the use of potting material 31, making it easier to inject the potting material 31, and reducing the production and manufacturing costs of the battery 100. Regarding the air suction passage 40 being connected to the outside via the air inlet 15, the air inlet 15 does not have to be sealed when negative pressure is suctioned, in which case the air pressure in the air suction passage 40 is equal to atmospheric pressure, thereby making the air pressure in the air suction passage 40 greater than the air pressure in the adhesive injection passage 30, or the air inlet 15 may be connected to an external gas replenishment tank, thereby making the air pressure in the air suction passage 40 greater than the air pressure in the adhesive injection passage 30.

[0033] In some embodiments, the first surface 21 and the second surface 22 are located opposite each other in the height direction, as shown in Figure 2. The first end plate 11 and the second end plate 12 may be two end plates facing each other in the left-right direction, as shown in Figure 2. The first surface 21 and the second surface 22 may be two surfaces located opposite each other in the up-down direction, as shown in Figures 2 and 5.

[0034] 5 to 8, the cell assembly 20 may further include a protective film 28. The protective film 28 covers the outer periphery of the cell unit 24 so that both left and right ends of the cell unit 24 shown in FIG. 2 are exposed, and both left and right ends of the protective film 28 shown in FIG. 2 are open. The protective film 28 can protect the cell unit 24 from external corrosion and protect the outer surface of the cell unit 24 from abrasion. At least one through-hole 281 is formed in the protective film 28, and the through-hole 281 is provided on at least one side of the protective film 28 facing the third passage c. The provision of the through-hole 281 allows the potting material 31 to flow from the through-hole 281 into the cell unit 24. The protective film 28 can protect the cell assembly 20 and is advantageous in improving the fixing and attachment effect of the potting material 31 to the cell assembly 20.

[0035] The cell assembly 20 may include a third surface and a fourth surface (not shown) located opposite each other in the width direction, and at least the outer periphery of the fourth surface and at least the outer periphery of the third surface 27 are in close contact with the housing body 16, thereby preventing the potting agent 31 from flowing onto the third surface 27 and the fourth surface. When injecting adhesive, the third surface 27 and the fourth surface are fastened to the housing body 16 by means of pressure or the like, without interfering with the air suction passage 40 and the adhesive injection passage 30, ensuring a close contact between the third surface 27 and the housing body 16. This is advantageous in that the adhesive injection passage 30 and the air suction passage 40 are independent of each other, thereby improving the safety performance of the battery 100.

[0036] For example, the first surface 21 may be the surface of one side of the protective film 28 facing the housing body 16 (e.g., the lower side shown in FIGS. 2 and 3 ), and the second surface 22 may be the surface of the other side of the protective film 28 facing the housing body (e.g., the upper side shown in FIGS. 2 and 3 ). That is, the first surface 21 and the second surface 22 are two surfaces of the protective film 28 located on opposite sides along the height direction of the housing body 16 (or the height direction of the battery 100). The third surface 27 is the surface of one side of the protective film 28 facing the housing body 16 (e.g., the front side shown in FIG. 2 ), and the fourth surface is the surface of the protective film 28 on the other side facing the housing body 16 (e.g., the rear side shown in FIG. 2 ). That is, the third surface 27 and the fourth surface are two surfaces of the protective film located on opposite sides along the width direction of the housing body 16 (i.e., the thickness direction of the battery 100). By providing the cell assembly 20 in this manner, the flatness of the outer surface of the cell assembly 20 can be improved, and the adhesion between the third surface 27 and the housing body 16 and the adhesion between the fourth surface and the housing body 16 can be ensured.

[0037] In some embodiments, adhesive inlet 14 and air suction inlet 13 are directly opposite each other along the length of housing 10. This allows equipment to be positioned at the same height to facilitate installation and improve production efficiency of battery 100.

[0038] In some embodiments, as shown in FIG. 3 , the housing 10 has two outer surfaces 18 positioned on opposite sides in the height direction. The distance between the outer surface 18 adjacent to the adhesive injection passage 30 and the center of the adhesive injection port 14 is D2, and D1 and D2 satisfy the relationship 10 mm≦D2≦0.25D1. For example, D1=100 mm, and D2=20 mm. As shown in FIGS. 3 and 4 , D1 is the height of the housing 10 in the vertical direction, and D2 is the height between the central axis of the adhesive injection port 14 and the lower surface of the housing 10 (or the lower surface of the housing body 16). Thus, by controlling the distance between the outer surface of the housing 10 and the center of the adhesive injection port 14, the use of potting material 31 can be reduced, the distance between the housing 10 and the first surface 21 can be rationalized, and the adhesive injection effect can be ensured when attaching the cell assembly 20 to the housing 10 and ensuring the strength of the internal structure. This is also advantageous for designing the battery 100 to be compact, and reduces costs.

[0039] 3 and 4 , the distance between the outer surface 18 of the two outer surfaces 18 adjacent to the adhesive injection passage 30 and the center of the air inlet 15 is D3, where D2 and D3 satisfy the relationship D2 + 18 mm ≦ D3 ≦ D2 + 22 mm. For example, D2 = 20 mm, D3 = 40 mm. By controlling the distance between the outer surface 18 of the housing 10 and the center of the air inlet 15, the distance between the air inlet 15 and the adhesive injection port 14 and the distance between the air inlet 15 and the housing 10 can be more reasonably set, which prevents the air inlet 15 from being sealed by the potting material 31 and improves the safety of the battery 100.

[0040] In some embodiments, as shown in Figures 9 and 10, the cell assembly 20 includes a cell unit 24, a cell holder 25, and an insulating member 26, and the cell unit 24 includes a plurality of subunits 241 arranged along the longitudinal direction of the housing 10 and connected in series, and among the plurality of subunits 241, the subunit 241 adjacent to the second end plate 12 may be the first subunit 241a, and the remaining subunits 241 may be the second subunits 241b, and the cell holder 25 is fixed to one end of the first subunit 241a facing the second end plate 12, the insulating member 26 is provided between the cell holder 25 and the second end plate 12, and the sealing member 23 is interposed between the second end plate 12 and the insulating member 26.

[0041] As shown in FIGS. 9 and 10 , the cell assembly 20 includes a cell unit 24. For example, the cell unit 24 may include a plurality of subunits 241. The subunits 241 may be arranged sequentially in the longitudinal direction of the housing 10 and electrically connected (e.g., connected in series). Each subunit 241 may include a plurality of cells 2411 arranged along the width direction and electrically connected (e.g., connected in parallel). The cells 2411 may be pouch cells or bare cells. Holders are provided at both ends of each subunit 241 in the longitudinal direction, and the holders are divided into cell holders 25 and intermediate holders 29. Two intermediate holders 29 are provided between two adjacent subunits 241 in the cell unit 24. A conductive sheet 60 is fixed to each intermediate holder 29, and two adjacent subunits 241 are connected in series via the corresponding conductive sheet 60. The cell assembly 20 may include two cell units 24 arranged along the width direction of the housing 10 (i.e., the thickness direction of the battery 100), and the two cell units 24 are connected in series via a connecting sheet provided on the cell holder 25.

[0042] The insulating member 26 may be provided between the cell holder 25 and the housing 10. By providing the insulating member 26, the housing 10 and the cell unit 24 are insulated from each other, improving the safety performance of the battery 100 and making the battery 100 more reliable and safe. For example, a groove is provided on one side of the insulating member 26 facing the cell unit 24, and the groove extends in the height direction of the battery 100 (the up-down direction in FIG. 2 ), improving the sealing effect for the cell unit 24 and making positioning easier.

[0043] 9 and 10 , one of the insulating member 26 and the cell holder 25 is provided with at least one locking hook 251, and the other of the insulating member 26 and the cell holder 25 is provided with at least one locking hole 261, and the locking hook 251 is engaged in the locking hole 261. For example, a plurality of locking holes 261 are provided on one side of the insulating member 26 facing the cell holder 25, and locking hooks 251 corresponding to the locking holes 261 are provided on one side of the cell holder 25 away from the cell units 24. When assembling the insulating member 26 and the cell holder 25, the locking hooks 251 are engaged with the locking holes 261. This reduces the difficulty of installing the insulating member 26 and makes it easier to remove the insulating member 26 when adjusting the number of cell units 24 due to the engagement of the locking hooks 251 with the locking holes 261.

[0044] In some embodiments, as shown in FIG. 3 , the height of the potting material 31 in the height direction of the housing 10 (the vertical direction in FIG. 3 ) is D4, where D4 satisfies 0.8 mm≦D4≦1.5 mm. For example, D4=1 mm. Because resistance exists in the adhesive injection passage 30, the thickness of the adhesive layer formed by the potting material 31 varies in the vertical direction of the housing 10. Here, D4 ​​is the maximum value of the adhesive layer in the height direction, i.e., the thickness of the adhesive layer after the potting material 31 has been sufficiently filled into the adhesive injection passage 30. Thus, by controlling the height of the potting material 31 in the height direction of the housing 10, the potting material 31 filled in the adhesive injection passage 30 can ensure structural strength and sealing performance, and the amount of potting material 31 used can be reduced.

[0045] 11, a battery pack 1000 according to an embodiment of the second aspect of the present application includes the battery 100 according to any one of the above embodiments. For example, the battery pack 1000 may include a housing and at least one battery 100 provided in the housing.

[0046] 11, a vehicle 10000 according to an embodiment of the third aspect of the present application includes the battery pack 1000 of the above-described embodiments or the battery 100 according to any one of the above-described embodiments. For example, the battery 100 may be directly provided in a battery receiving cavity in the vehicle 10000 without being provided in a housing.

[0047] 1 to 10 , by providing an adhesive injection passage 30 that communicates with the adhesive injection port 14 and the air suction port 13, when negative pressure suction is performed through the air suction port 13, the adhesive injection passage 30 is filled with potting material 31 that enters through the adhesive injection port 14, thereby achieving fixation and sealing within the battery 100 and enabling rapid positioning and facilitating automated adhesive injection. Furthermore, by providing an air suction passage 40 within the housing 10 so that one end of the air suction passage 40 communicates with the air inlet 15 and the other end communicates with the air suction port 13, when negative pressure suction is performed through the air suction port 13, one end of the air suction passage 40 communicates with the outside via the air inlet 15. This causes the air pressure within the air suction passage 40 to be greater than the air pressure within the adhesive injection passage 30, preventing some of the potting material 31 from flowing into the air suction passage 40. This reduces the use of potting material 31, facilitates the injection of potting material 31, and reduces the production and manufacturing costs of the battery 100.

[0048] In the description of this application, the orientations or positional relationships indicated by terms such as "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "axial direction," "radial direction," and "circumferential direction" are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate and simplify the description of this application. They do not indicate or suggest that the devices or parts shown must have a specific orientation, be configured, or operate in a specific orientation, and therefore should not be understood as limiting this application.

[0049] In the description of this application, a "first feature" and a "second feature" may include one or more of the feature. In the description of this application, "plurality" means two or more. In the description of this application, a first feature being "above" or "below" a second feature may include direct contact between the first feature and the second feature, or may include contact between the first feature and the second feature without direct contact but via another feature between them. In the description of this application, a first feature being "above," "above," or "on top of" a second feature may include the first feature being directly above and diagonally above the second feature, or may simply mean that the horizontal height of the first feature is higher than that of the second feature.

[0050] In the description herein, the reference phrases such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "particular examples," or "some examples" mean that the specific feature, structure, material, or characteristic described in the combination of the embodiment or example is included in at least one embodiment or example of the present application. In the description herein, the exemplary references to the above terms are not necessarily limited to the same embodiment or example.

[0051] Although embodiments of the present application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application, and that the scope of the present application is limited by the claims and their equivalents. [Explanation of symbols]

[0052] 10,000 vehicles 1000 battery packs 100 batteries 10. Housing 11 1st end plate 12 Second end plate 13 Air intake port 14 Adhesive injection port 15 Air inlet 16 Housing body 17. Storage cavity 18 Outer surface 20 Cell Assembly 21 1st surface 22 Second surface 23 Sealing member 27 Third surface 24 cell units 241 subunits 241a 1st subunit 241b second subunit 2411 cells 25 Cell Holder 251 Locking hook 26 Insulating material 261 Locking hole 28 Protective Film 281 Through Hole 29 Intermediate holder 30 Adhesive injection passage 31 Potting agent a 1st aisle b 2nd aisle c 3rd aisle d 4th aisle e 5th aisle 40 Air suction passage 50 gap 60 Conductive Sheet

Claims

1. A battery including a housing and a cell assembly, The housing includes a housing body and a first end plate and a second end plate opposed to each other in a longitudinal direction of the housing body, the first end plate, the second end plate and the housing body defining a sealed receiving cavity, and an adhesive injection port formed in the second end plate. the cell assembly is disposed within the accommodating cavity and includes a first surface, the first surface facing one side of the housing body in a height direction of the housing body; a gap is provided between the second end plate and the cell assembly; a sealing member is disposed within the gap; the sealing member divides the gap into a first passage and a second passage; the adhesive injection port communicates with the first passage; an adhesive injection passage is provided within the housing; the adhesive injection passage includes the first passage and a third passage located between the first surface and an inner wall of the housing body; and a potting agent is provided within the adhesive injection passage; an air suction port formed in the first end plate, the air suction port communicating with the adhesive injection passage, and a pressure in the adhesive injection passage being lower than a pressure outside the housing; an air inlet spaced apart from the adhesive injection port and communicating with the second passage; the cell assembly further includes a second surface opposite the first surface; an air suction passage is provided within the housing, the air suction passage including the second passage, a fourth passage located between the second surface and an inner wall of the housing body, and a fifth passage located between the first end plate and the cell assembly, the fifth passage communicating with the air suction port.

2. The battery of claim 1 , wherein the adhesive inlet and the air inlet are aligned along the length of the housing.

3. 2. The battery of claim 1, wherein the cell assembly includes a third surface and a fourth surface located opposite each other along a width direction of the housing body, and at least an outer periphery of the fourth surface and at least an outer periphery of the third surface are in close contact with the housing body.

4. A battery comprising a housing and a cell assembly, The housing includes a housing body and a first end plate and a second end plate opposed to each other in a longitudinal direction of the housing body, the first end plate, the second end plate and the housing body defining a sealed receiving cavity, and an adhesive injection port formed in the second end plate. the cell assembly is disposed within the accommodating cavity and includes a first surface, the first surface facing one side of the housing body in a height direction of the housing body; a gap is provided between the second end plate and the cell assembly; a sealing member is disposed within the gap; the sealing member divides the gap into a first passage and a second passage; the adhesive injection port communicates with the first passage; an adhesive injection passage is provided within the housing; the adhesive injection passage includes the first passage and a third passage located between the first surface and an inner wall of the housing body; and a potting agent is provided within the adhesive injection passage; The cell assembly includes a cell unit and a protective film, the protective film is coated on the outer periphery of the cell unit, and both ends of the protective film in the longitudinal direction of the housing body are open, and at least one through hole is formed in the protective film, and the through hole is provided on at least one side of the protective film facing the third passage.

5. The housing has a height D １ and has two outer surfaces positioned opposite to each other in the height direction, and the distance between the outer surface adjacent to the adhesive injection passage and the center of the adhesive injection port is D ２ and the D １ and the above D ２ What is that? 10mm≦D ２ ≦0.25D １ The battery according to claim 1 , wherein the following relationship is satisfied:

6. The distance between the outer surface of the two outer surfaces adjacent to the adhesive injection passage and the center of the air inlet is D ３ and the D ２ and the above D ３ What is that? D ２ +18mm≦D ３ ≦D ２ +22 The battery according to claim 5, which satisfies the following relational expression:

7. A battery comprising a housing and a cell assembly, The housing includes a housing body and a first end plate and a second end plate opposed to each other in a longitudinal direction of the housing body, the first end plate, the second end plate and the housing body defining a sealed receiving cavity, and an adhesive injection port formed in the second end plate. the cell assembly is disposed within the accommodating cavity and includes a first surface, the first surface facing one side of the housing body in a height direction of the housing body; a gap is provided between the second end plate and the cell assembly; a sealing member is disposed within the gap; the sealing member divides the gap into a first passage and a second passage; the adhesive injection port communicates with the first passage; an adhesive injection passage is provided within the housing; the adhesive injection passage includes the first passage and a third passage located between the first surface and an inner wall of the housing body; and a potting agent is provided within the adhesive injection passage; the cell assembly includes a cell unit, a cell holder, and an insulating member; The cell unit includes a plurality of subunits arranged along the length direction of the housing and connected in series, When the subunit adjacent to the second end plate among the plurality of subunits is a first subunit, the cell holder is fixed to one end of the first subunit facing the second end plate, The insulating member is provided between the cell holder and the second end plate, and the sealing member is disposed between the second end plate and the insulating member.

8. 8. The battery of claim 7, wherein one of the insulating member and the cell holder is provided with at least one locking hook, and the other of the insulating member and the cell holder is provided with at least one locking hole, and the locking hook is engaged in the locking hole.

9. The height of the potting material in the height direction of the housing is D ４ and the D ４ teeth, 0.8mm≦D ４ ≦1.5mm The battery of claim 1 , wherein

10. A battery pack comprising the battery according to any one of claims 1 to 9.

11. A vehicle comprising the battery according to any one of claims 1 to 9.

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