Battery pack potting device and method

Abstract

This invention provides a battery pack potting apparatus, relating to the field of potting technology. The battery pack potting apparatus includes a frame, a drive assembly, and a potting assembly. The drive assembly is mounted on the frame, and the potting assembly is drive-connected to the drive assembly. The potting assembly includes a mounting base, a primary potting plate, a secondary potting plate, and a tertiary potting plate stacked sequentially. A first potting chamber is formed between the mounting base and the primary potting plate, a second potting chamber is formed between the primary and secondary potting plates, and a third potting chamber is formed between the secondary and tertiary potting plates. The mounting base has injection holes, the primary potting plate has a first potting hole, the secondary potting plate has a second potting hole, and the tertiary potting plate has a third potting hole. The number of injection holes, first potting holes, second potting holes, and third potting holes increases sequentially. The drive assembly can move the potting assembly to allow the tertiary potting plate to contact or separate from the battery pack housing.

Description

Technical Field

[0001] This invention relates to the field of potting technology, and more specifically, to a battery pack potting apparatus and method. Background Technology

[0002] In battery packs composed of cylindrical cells, the industry commonly uses glue potting to seal the cells together with the casing and related structural components. However, existing potting devices often have poor potting performance. When the gaps between cells are small, the glue may not flow well in these small gaps, resulting in numerous air bubbles and voids after the glue cures. Summary of the Invention

[0003] The present invention aims to provide, for example, a battery pack potting apparatus and method that can improve the potting effect of the battery pack and avoid the problems of air bubbles and voids after the adhesive has cured.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a battery pack potting apparatus for potting a battery pack, comprising a frame, a drive assembly, and a potting assembly;

[0006] The drive assembly is mounted on the frame, and the potting assembly is connected to the drive assembly in a driving connection.

[0007] The glue-dispensing assembly includes a mounting base, a primary glue-dispensing plate, a secondary glue-dispensing plate, and a tertiary glue-dispensing plate;

[0008] The mounting base, the first-level glue-separating plate, the second-level glue-separating plate, and the third-level glue-separating plate are stacked in sequence, and a first glue-separating chamber is formed between the mounting base and the first-level glue-separating plate, a second glue-separating chamber is formed between the first-level glue-separating plate and the second-level glue-separating plate, and a third glue-separating chamber is formed between the second-level glue-separating plate and the third-level glue-separating plate.

[0009] The mounting base is provided with an injection hole, the first-stage dispensing plate is provided with a first dispensing hole, the second-stage dispensing plate is provided with a second dispensing hole, and the third-stage dispensing plate is provided with a third dispensing hole.

[0010] The number of the glue injection hole, the first glue dispensing hole, the second glue dispensing hole, and the third glue dispensing hole increases sequentially.

[0011] The potting assembly can move under the drive of the driving assembly, causing the three-stage dispensing plate to come into contact with or separate from the battery pack housing.

[0012] In an optional embodiment, the diameters of the injection hole, the first dispensing hole, the second dispensing hole, and the third dispensing hole decrease sequentially; and / or;

[0013] The glue injection hole is offset from the first glue dispensing hole, the first glue dispensing hole and the second glue dispensing hole are offset from each other, and the second glue dispensing hole and the third glue dispensing hole are offset from each other.

[0014] In an optional embodiment, the number of the glue injection hole is one, and the glue injection hole is located at the center of the length direction and the width direction of the three-stage glue separating plate. The number of the first glue separating hole includes at least two, which are spaced apart along the length direction of the three-stage glue separating plate, located at the center of the width direction of the three-stage glue separating plate, and offset from the glue injection hole.

[0015] In an optional embodiment, the distance between each of the first dispensing holes and the projection of the dispensing holes on the primary dispensing plate is equal.

[0016] In an optional embodiment, the number of second dispensing holes is greater than the number of first dispensing holes, and all the second dispensing holes are spaced apart along the length of the three-stage dispensing plate;

[0017] The secondary dispensing plate has a guide block protruding on the side near the primary dispensing plate, corresponding to the first dispensing hole. The guide block allows the adhesive flowing from the first dispensing hole into the second dispensing chamber to flow evenly into multiple second dispensing holes.

[0018] In an optional embodiment, there are two first dispensing holes and three second dispensing holes, namely second dispensing hole A, second dispensing hole B and second dispensing hole C. The second dispensing hole B is located between the second dispensing hole A and the second dispensing hole and is equally spaced.

[0019] The number of flow guide blocks includes flow guide block A and flow guide block B. The cross-section of flow guide block A and flow guide block B along the length direction of the potting assembly is trapezoidal. Flow guide block A is located between the second dispensing hole A and the second dispensing hole B, and the upper surface of flow guide block A corresponds to one of the first dispensing holes. Flow guide block B is located between the second dispensing hole B and the second dispensing hole C, and the upper surface of flow guide block B corresponds to another first dispensing hole.

[0020] In an optional embodiment, the distance between the projection of the first dispensing hole corresponding to the flow guide block A onto the upper surface of the flow guide block A and the distance between the second dispensing hole A is twice the distance between the projection of the first dispensing hole corresponding to the flow guide block A onto the upper surface of the flow guide block A and the distance between the second dispensing hole B.

[0021] The distance between the projection of the first dispensing hole corresponding to the flow guide block B onto the upper surface of the flow guide block B and the second dispensing hole C is twice the distance between the projection of the first dispensing hole corresponding to the flow guide block B onto the upper surface of the flow guide block B and the second dispensing hole B.

[0022] In an optional embodiment, the three-stage dispensing plate is provided with a diversion groove corresponding to the second dispensing hole. The diversion groove is arranged along the length direction of the three-stage dispensing plate. Dispensing grooves communicating with the diversion groove are respectively provided at both ends of the diversion groove. The dispensing groove is arranged along the width direction of the dispensing assembly. There are multiple third dispensing holes, and the multiple third dispensing holes are spaced apart on the bottom wall of the dispensing groove.

[0023] In an optional embodiment, the diversion channel is disposed at the center of the width direction of the three-stage dispensing plate; and / or,

[0024] The diameter of the third dispensing hole gradually decreases from both sides of the width direction of the three-stage dispensing plate towards the middle of the width direction; and / or,

[0025] The spacing between two adjacent third dispensing holes increases sequentially from both sides of the width direction of the three-stage dispensing plate towards the middle of the width direction of the three-stage dispensing plate.

[0026] In an optional embodiment, the battery pack potting apparatus further includes a pressure sensor mounted on the potting assembly; and / or,

[0027] The potting assembly is also provided with the vacuum port, which is used to evacuate the battery pack; and / or

[0028] The drive assembly includes multiple telescopic drive components, one end of which is connected to the frame and the other end of which is connected to the glue dispensing assembly. The glue dispensing assembly can move downward or upward under the extension and retraction of the telescopic drive components.

[0029] In a second aspect, the present invention provides a battery pack potting method, applied to the battery pack potting apparatus described in any of the foregoing embodiments, the method comprising:

[0030] Control the movement of the drive component to move the glue-filling component so that the three-stage glue-dispensing plate comes into contact with the top of the battery pack;

[0031] Control the opening of the glue injection hole to inject glue into the battery pack;

[0032] The glue level is obtained, and it is determined whether the glue level has reached the preset glue level; wherein, the glue level represents the actual glue level of the battery pack.

[0033] When the glue level reaches the preset injection level, the glue injection hole is controlled to close.

[0034] The beneficial effects of the battery pack potting apparatus and potting method provided in the embodiments of the present invention include, for example:

[0035] This application employs a mounting base, a primary adhesive separating plate, a secondary adhesive separating plate, and a tertiary adhesive separating plate, stacked sequentially. This creates a first adhesive separating chamber between the mounting base and the primary adhesive separating plate, a second adhesive separating chamber between the primary and secondary adhesive separating plates, and a third adhesive separating chamber between the secondary and tertiary adhesive separating plates. An injection hole is provided on the mounting base, a first adhesive separating hole is provided on the primary adhesive separating plate, a second adhesive separating hole is provided on the secondary adhesive separating plate, and a third adhesive separating hole is provided on the tertiary adhesive separating plate. The number of injection holes, first adhesive separating holes, second adhesive separating holes, and third adhesive separating holes increases sequentially. During battery pack potting, adhesive flows into the first adhesive separating chamber through the injection hole, then is diverted to the second adhesive separating chamber through at least two first adhesive separating holes, and then flows into the third adhesive separating chamber through at least three second adhesive separating holes. Finally, the multiple third adhesive separating holes evenly inject the adhesive into the battery pack requiring potting. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the battery pack potting device provided in an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of the potting assembly of the battery pack potting device provided in an embodiment of the present invention;

[0039] Figure 3 A cross-sectional view of the potting assembly of the battery pack potting device provided in an embodiment of the present invention;

[0040] Figure 4 An exploded structural diagram of the potting assembly of the battery pack potting device provided in an embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of the structure of the secondary dispensing plate of the battery pack potting device provided in an embodiment of the present invention;

[0042] Figure 6This is a schematic diagram of the three-stage dispensing plate of the battery pack potting device provided in an embodiment of the present invention.

[0043] Icons: 100-Battery pack potting device; 110-Frame; 130-Drive assembly; 150-Pouring assembly; 151-Mounting base; 153-First-stage dispensing plate; 155-Second-stage dispensing plate; 157-Third-stage dispensing plate; 159-First dispensing chamber; 161-Second dispensing chamber; 163-Third dispensing chamber; 165-Injection hole; 167-First dispensing hole; 169-Second dispensing hole; 171-Third dispensing hole; 173-Guide block; 175-Second dispensing hole A; 177-Second dispensing hole B; 179-Second dispensing hole C; 181-Guide block A; 183-Guide block B; 185-Diverter groove; 186-Dispensing groove; 187-Vacuum port; 190-Pressure sensor; 191-Level sensor. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0049] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0050] Please refer to Figure 1 This embodiment provides a battery pack potting device 100, which can improve the potting effect of the battery pack and avoid the problems of air bubbles and voids after the glue cures.

[0051] Please refer to Figures 1-6 In this embodiment, the battery pack potting apparatus 100 includes a frame 110, a drive assembly 130, and a potting assembly 150. The drive assembly 130 is mounted on the frame 110, and the potting assembly 150 is connected to the drive assembly 130 in a transmission manner. The potting assembly 150 includes a mounting base 151, a primary potting plate 153, a secondary potting plate 155, and a tertiary potting plate 157. The mounting base 151, the primary potting plate 153, the secondary potting plate 155, and the tertiary potting plate 157 are stacked sequentially, and a first potting chamber 159 is formed between the mounting base 151 and the primary potting plate 153, a second potting chamber 161 is formed between the primary potting plate 153 and the secondary potting plate 155, and a third potting chamber 163 is formed between the secondary potting plate 155 and the tertiary potting plate 157. The mounting base 151 is provided with an injection hole 165, the first-stage dispensing plate 153 is provided with a first dispensing hole 167, the second-stage dispensing plate 155 is provided with a second dispensing hole 169, and the third-stage dispensing plate 157 is provided with a third dispensing hole 171. The number of injection holes 165, first dispensing holes 167, second dispensing holes 169, and third dispensing holes 171 increases sequentially. The dispensing assembly 150 can move under the drive of the drive assembly 130, so that the third-stage dispensing plate 157 abuts against or separates from the battery pack housing.

[0052] In this embodiment, a mounting base 151, a primary dispensing plate 153, a secondary dispensing plate 155, and a tertiary dispensing plate 157 are provided, and these components are stacked sequentially. This creates a first dispensing chamber 159 between the mounting base 151 and the primary dispensing plate 153, and a second dispensing chamber 161 between the primary dispensing plate 153 and the secondary dispensing plate 155. The secondary dispensing... A third dispensing chamber 163 is formed between plate 155 and the three-stage dispensing plate 157. An injection hole 165 is provided on the mounting base 151. A first dispensing hole 167 is provided on the first-stage dispensing plate 153, a second dispensing hole 169 is provided on the second-stage dispensing plate 155, and a third dispensing hole 171 is provided on the third-stage dispensing plate 157. The number of injection holes 165, first dispensing holes 167, second dispensing holes 169, and third dispensing holes 171 increases sequentially. Thus, during battery pack potting, the adhesive flows into the first dispensing chamber 159 through the injection hole 165, then is diverted to the second dispensing chamber 161 through at least two first dispensing holes 167, and then flows into the third dispensing chamber through at least three second dispensing holes 169. Finally, the adhesive is evenly injected into the battery pack requiring potting through the multiple third dispensing holes 171.

[0053] Please refer to Figures 1-6 In this embodiment, the glue injection hole 165 is misaligned with the first glue dispensing hole 167, the first glue dispensing hole 167 and the second glue dispensing hole 169 are misaligned, and the second glue dispensing hole 169 and the third glue dispensing hole 171 are misaligned.

[0054] In this embodiment, the number of injection holes 165, first dispensing holes 167, second dispensing holes 169 and third dispensing holes 171 are increased sequentially and staggered, so that the first dispensing plate 153, second dispensing plate 155 and third dispensing plate 157 can distribute the glue more evenly, so that the glue can be evenly injected into the battery pack through multiple third dispensing holes 171.

[0055] Of course, in some other embodiments of this application, the diameters of the injection hole 165, the first dispensing hole 167, the second dispensing hole 169, and the third dispensing hole 171 decrease sequentially.

[0056] In this embodiment, the mounting base 151 is generally rectangular in shape, and a groove A is formed on the bottom surface of the mounting base 151. An injection hole is located on the top wall of the mounting base 151 and communicates with the groove A. A glue injection tube connection interface is protruding from the top wall of the mounting base 151 corresponding to the injection hole. An electronic control valve is installed on the connection interface, which can control the opening and closing of the glue injection port. Normally, the prepared glue can be delivered to the glue injection port through a pipe.

[0057] In this embodiment, there is one glue injection hole 165, which is located at the center of the mounting base 151 in both the length and width directions. Furthermore, under normal circumstances, the center of this glue injection hole 165 also corresponds to the center of the three-stage adhesive separation plate 157.

[0058] Of course, to improve the efficiency of glue dispensing, the number of glue dispensing holes 165 can be set to two or three. When there are multiple glue dispensing holes 165, they can be evenly distributed on the mounting base 151. For example, they can be distributed in a straight line at equal intervals, or arranged in a rectangle, or arranged in an isosceles triangle.

[0059] Please refer to Figures 1-6 In this embodiment, the primary dispensing plate 153 is also roughly rectangular, but its length and width are slightly larger than those of the mounting base 151. The mounting base 151 is stacked on top of the primary dispensing plate 153, thereby allowing the primary dispensing plate 153 to close the groove A, forming the first dispensing chamber. When the mounting base 151 and the primary dispensing plate 153 are stacked, their centers should be aligned as much as possible in the length and width directions.

[0060] In this embodiment, there are two first dispensing ports. The bottom wall of the first-stage dispensing plate 153 is recessed with a groove B, and two first dispensing holes 167 are disposed on the top wall of the first-stage dispensing plate 153 and communicate with the groove B. In terms of position, the two first dispensing holes 167 are arranged along the length direction of the first-stage dispensing plate 153 and are offset from the dispensing hole 165.

[0061] In this embodiment, two first dispensing ports are provided, which are offset from the dispensing hole 165. After the adhesive flows into the first dispensing chamber 159 from the dispensing port, it is divided into two parts by the first dispensing plate 153, thus achieving the first dispensing of the adhesive through the two first dispensing ports.

[0062] In this embodiment, the two first dispensing holes 167 are arranged in a row and are both located at the center of the width direction of the three-stage dispensing plate 157. The distance between the projection of each first dispensing hole 167 and the dispensing hole 165 on the first-stage dispensing plate 153 is equal.

[0063] In this embodiment, the distance between the projections of each first dispensing hole 167 and the dispensing hole 165 on the primary dispensing plate 153 is equal. In this way, after the glue flows into the first dispensing chamber, the primary dispensing plate 153 can evenly distribute the glue into the two first dispensing holes 167.

[0064] Of course, in some other embodiments of this application, the number of second glue injection holes 165 can also be four. They can be arranged in a rectangular manner at the four vertices, and the intersection of their diagonals can be aligned with the center of the projection of the glue injection hole 165 on the first-stage glue distribution plate 153. This can also ensure the uniformity of the flow distribution of the first-stage glue distribution plate 153.

[0065] Please refer to Figures 1-6 In this embodiment, the secondary dispensing plate 155 is also roughly rectangular in shape, and its area is larger than that of the primary dispensing plate 153. A groove C is provided on the bottom wall of the secondary dispensing plate 155. There are three second dispensing holes 169, all spaced apart along the length of the tertiary dispensing plate 157. A guide block 173 protrudes from the side of the secondary dispensing plate 155 closest to the primary dispensing plate 153, corresponding to the first dispensing hole 167. The guide block 173 allows the adhesive flowing from the first dispensing hole 167 into the secondary dispensing chamber to flow evenly into the multiple second dispensing holes 169.

[0066] In this embodiment, there are two first dispensing holes 167 and three second dispensing holes 169, namely second dispensing hole A175, second dispensing hole B177, and second dispensing hole C179. The second dispensing hole B177 is located between the second dispensing holes A175 and second dispensing holes 169 and is evenly spaced. The number of guide blocks 173 includes guide block A181 and guide block B183. The cross-section of guide block A181 and guide block B183 along the length of the potting assembly is trapezoidal. Guide block A181 is located between the second dispensing holes A175 and second dispensing holes B177, and the upper surface of guide block A181 corresponds to one of the first dispensing holes 167. Guide block B183 is located between the second dispensing holes B177 and second dispensing holes C179, and the upper surface of guide block B183 corresponds to another first dispensing hole 167.

[0067] In this embodiment, the distance L1 between the projection of the first dispensing hole 167 corresponding to the flow guide block A181 onto the upper surface of the flow guide block A181 and the second dispensing hole A175 is twice the distance S1 between the projection of the first dispensing hole 167 corresponding to the flow guide block A181 onto the upper surface of the flow guide block A181 and the second dispensing hole B177. The distance L2 between the projection of the first dispensing hole 167 corresponding to the flow guide block B183 onto the upper surface of the flow guide block B183 and the second dispensing hole C179 is twice the distance S between the projection of the first dispensing hole 167 corresponding to the flow guide block B183 onto the upper surface of the flow guide block B183 and the second dispensing hole B177.

[0068] In this embodiment, L1 is set to twice S1, and L2 is set to twice S2. This ensures that the liquid entering the second dispensing chamber can flow evenly into the three second dispensing holes 169.

[0069] In this embodiment, the third-level dispensing plate 157 and the second-level dispensing plate 155 are the same size, and the battery pack housing to be filled with glue is the same size. The third-level dispensing plate 157 is provided with a diversion groove 185 corresponding to the second dispensing hole 169. The diversion groove 185 is arranged along the length direction of the third-level dispensing plate 157. At both ends of the diversion groove 185, there is a dispensing groove 186 communicating with the diversion groove 185. The dispensing groove 186 is arranged along the width direction of the dispensing assembly. There are multiple third dispensing holes 171, which are spaced apart on the bottom wall of the dispensing groove 186.

[0070] Please refer to Figures 1-6 In this embodiment, the diversion channel 185 has an arched structure that is high in the middle and low on both sides, so that the glue flowing into the third dispensing chamber 163 from the second dispensing port can flow evenly from the middle of the diversion channel 185 to the dispensing channels 186 on both sides.

[0071] In this embodiment, the diversion groove 185 is disposed at the center of the width direction of the three-stage dispensing plate 157. The diameter of the third dispensing hole 171 on both sides of the width direction of the three-stage dispensing plate 157 gradually decreases towards the middle of the width direction of the three-stage dispensing plate 157. The spacing between two adjacent third dispensing holes 171 on both sides of the width direction of the three-stage dispensing plate 157 towards the middle of the width direction of the three-stage dispensing plate 157 increases sequentially.

[0072] With the above configuration, the adhesive flowing into the third dispensing chamber 163 can be evenly injected into the battery pack through multiple third dispensing holes 171.

[0073] In this embodiment, the side plate of the three-stage adhesive separation plate 157 is folded down to form a folded edge, which corresponds to the side wall of the battery pack housing. This can improve the strength of the three-stage adhesive separation plate 157 and allow it to abut against the battery pack housing.

[0074] Please refer to Figures 1-6 In this embodiment, the battery pack potting device 100 further includes a pressure sensor 190. A mounting hole is provided on the primary dispensing plate 153, and the pressure sensor 190 is disposed within the mounting hole. When the potting assembly 150 abuts against the top of the housing, the pressure sensor 190 can measure the pressure of the space formed by the battery pack housing and the potting assembly 150.

[0075] In this embodiment, the battery pack potting assembly also includes a liquid level sensor 191. The primary dispensing plate 153 and the secondary dispensing plate 155 are provided with fixing holes. The liquid level sensor 191 is installed in the liquid level hole and protrudes below the secondary dispensing plate 155. During the potting process, the liquid level sensor 191 can measure the potting depth.

[0076] In this embodiment, there are four liquid level sensors 191 arranged in a rectangular shape, which can determine whether the glue is poured evenly.

[0077] In this embodiment, the dispensing assembly 150 is also provided with a vacuum port 187, which is connected to the third dispensing chamber 163 and can be connected to a vacuum pump to vacuum or pressurize during the dispensing process to improve the fluidity of the adhesive.

[0078] In this embodiment, the frame 110 has a rectangular frame structure, which can be installed in the production line or set up independently. The drive assembly 130 includes multiple telescopic drive components, which can be multiple hydraulic cylinders or electric telescopic components. One end of the telescopic drive component is connected to the frame 110, and the other end is connected to the secondary dispensing plate. When the telescopic drive assembly 130 extends, it can drive the dispensing assembly 150 to move downward so that the tertiary dispensing plate 157 abuts against the upper surface of the battery pack housing and forms a seal. During the retraction of the telescopic drive assembly 130, the dispensing assembly 150 can move upward, thereby separating the dispensing assembly 150 from the battery pack.

[0079] In other embodiments of this application, the drive assembly 130 may also be an existing structure formed by a motor and a transmission assembly that can convert rotational motion into lifting motion.

[0080] In this embodiment, the number of telescopic drive assemblies 130 includes six, which are evenly arranged to provide a large and uniform downward pressure to achieve a seal between the three-stage adhesive plate 157 and the battery box.

[0081] Furthermore, based on the battery pack potting apparatus 100 provided in the above embodiments, the present invention also provides a battery pack potting method.

[0082] The methods include:

[0083] S100, control the drive component 130 to move, thereby driving the potting component 150 to move, so that the three-stage dispensing plate 157 abuts against the top of the battery pack;

[0084] S300, control the opening of the glue injection hole 165 to inject glue into the battery pack;

[0085] S500: Obtain the potting liquid level and determine whether the potting liquid level has reached the preset potting liquid level; whereby the potting liquid level represents the actual potting height of the battery pack.

[0086] S700 controls the glue injection hole 165 to close when the glue level reaches the preset injection level.

[0087] Furthermore, step S200 is included between steps S100 and S300.

[0088] S200 controls the liquid injection port to close and evacuates the battery pack. When the internal pressure of the battery pack reaches the preset pressure, it stops evacuating and opens the liquid injection port.

[0089] In summary, the beneficial effects of the battery pack potting apparatus 100 and potting method provided in the embodiments of the present invention include, for example:

[0090] This application provides a mounting base 151, a primary dispensing plate 153, a secondary dispensing plate 155, and a tertiary dispensing plate 157, arranged in a sequentially stacked manner. This creates a first dispensing chamber 159 between the mounting base 151 and the primary dispensing plate 153, a second dispensing chamber 161 between the primary and secondary dispensing plates 153, and a third dispensing chamber 163 between the secondary and tertiary dispensing plates 155 and 157. An injection hole 165 is provided on the mounting base 151, and an injection hole 165 is provided on the primary dispensing plate 153. A first dispensing hole 167 is provided on the first dispensing plate 155, a second dispensing hole 169 is provided on the second dispensing plate 155, and a third dispensing hole 171 is provided on the third dispensing plate 157. The number of dispensing holes 165, 167, 169 and 171 increases sequentially. In this way, when the battery pack is potted, the glue flows into the first dispensing chamber 159 through the dispensing hole 165, then flows into the second dispensing chamber 161 through at least two first dispensing holes 167, and then flows into the third dispensing chamber through at least three second dispensing holes 169. After that, the glue can be evenly poured into the battery pack that needs to be potted by multiple third dispensing holes 171.

[0091] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A battery pack potting device for potting of a battery pack, characterized by, It includes a frame (110), a drive assembly (130), and a potting assembly (150). The drive assembly (130) is mounted on the frame (110), and the potting assembly (150) is connected to the drive assembly (130) in a transmission manner; The glue-dispensing assembly (150) includes a mounting base (151), a primary glue-dispensing plate (153), a secondary glue-dispensing plate (155), and a tertiary glue-dispensing plate (157). The mounting base (151), the first-stage adhesive separation plate (153), the second-stage adhesive separation plate (155), and the third-stage adhesive separation plate (157) are stacked sequentially, and a first adhesive separation chamber (159) is formed between the mounting base (151) and the first-stage adhesive separation plate (153), a second adhesive separation chamber (161) is formed between the first-stage adhesive separation plate (153) and the second-stage adhesive separation plate (155), and a third adhesive separation chamber (163) is formed between the second-stage adhesive separation plate (155) and the third-stage adhesive separation plate (157). The mounting base (151) is provided with an injection hole (165), the first-level glue-distributing plate (153) is provided with a first glue-distributing hole (167), the second-level glue-distributing plate (155) is provided with a second glue-distributing hole (169), and the third-level glue-distributing plate (157) is provided with a third glue-distributing hole (171). The number of the glue injection hole (165), the first glue dispensing hole (167), the second glue dispensing hole (169), and the third glue dispensing hole (171) increases sequentially; The potting assembly (150) can move under the drive of the drive assembly (130), so that the three-stage dispensing plate (157) abuts or separates from the battery pack housing.

2. The battery pack potting apparatus according to claim 1, characterized in that, The diameters of the injection hole (165), the first dispensing hole (167), the second dispensing hole (169), and the third dispensing hole (171) decrease sequentially; and / or; The glue injection hole (165) is offset from the first glue distribution hole (167), the first glue distribution hole (167) and the second glue distribution hole (169) are offset, and the second glue distribution hole (169) and the third glue distribution hole (171) are offset.

3. The battery pack potting apparatus according to claim 1, characterized in that, The number of the glue injection hole (165) is one, and the glue injection hole (165) is located at the center of the length and width directions of the three-stage glue separation plate (157); The number of the first dispensing holes (167) includes at least two, which are spaced apart along the length direction of the three-stage dispensing plate (157) and located at the center of the width direction of the three-stage dispensing plate (157), and are offset from the dispensing holes (165).

4. The battery pack potting apparatus according to claim 3, characterized in that, The distance between the projections of each of the first dispensing holes (167) and the dispensing holes (165) on the first-stage dispensing plate (153) is equal.

5. The battery pack potting apparatus according to claim 1, characterized in that, All the second dispensing holes (169) are spaced apart along the length of the three-stage dispensing plate (157); The secondary dispensing plate (155) has a guide block (173) protruding on the side near the primary dispensing plate (153) at a position corresponding to the first dispensing hole (167). The guide block (173) can make the glue liquid flowing into the second dispensing chamber from the first dispensing hole (167) flow evenly into multiple second dispensing holes (169).

6. The battery pack potting apparatus according to claim 5, characterized in that, The number of the first dispensing holes (167) is two; The number of the second dispensing holes (169) is three, namely the second dispensing hole A (175), the second dispensing hole B (177) and the second dispensing hole C (179). The second dispensing hole B (177) is located in the middle of the second dispensing hole A (175) and the second dispensing hole (169) and is set at equal intervals. The number of guide blocks (173) includes guide block A (181) and guide block B (183). The cross-section of guide block A (181) and guide block B (183) along the length of the three-stage dispensing plate (157) is trapezoidal. Guide block A (181) is located between the second dispensing hole A (175) and the second dispensing hole B (177). The upper surface of guide block A (181) corresponds to one of the first dispensing holes (167). Guide block B (183) is located between the second dispensing hole B (177) and the second dispensing hole C (179). The upper surface of guide block B (183) corresponds to another of the first dispensing holes (167).

7. The battery pack potting apparatus according to claim 6, characterized in that, The distance between the projection of the first dispensing hole (167) corresponding to the flow guide block A (181) on the upper surface of the flow guide block A (181) and the second dispensing hole A (175) is twice the distance between the projection of the first dispensing hole (167) corresponding to the flow guide block A (181) on the upper surface of the flow guide block A (181) and the second dispensing hole B (177); The distance between the projection of the first dispensing hole (167) corresponding to the flow guide block B (183) on the upper surface of the flow guide block B (183) and the second dispensing hole C (179) is twice the distance between the projection of the first dispensing hole (167) corresponding to the flow guide block B (183) on the upper surface of the flow guide block B (183) and the second dispensing hole B (177).

8. The battery pack potting apparatus according to claim 1, characterized in that, The three-stage dispensing plate (157) is provided with a diversion groove (185) corresponding to the second dispensing hole (169). The diversion groove (185) is arranged along the length direction of the three-stage dispensing plate (157). At both ends of the diversion groove (185), there is a dispensing groove (186) communicating with the diversion groove (185). The dispensing groove (186) is arranged along the width direction of the three-stage dispensing plate (157). There are multiple third dispensing holes (171), and the multiple third dispensing holes (171) are spaced apart on the bottom wall of the dispensing groove (186).

9. The battery pack potting apparatus according to claim 8, characterized in that, The diversion channel (185) is located at the center of the width direction of the three-stage dispensing plate (157); and / or, The diameter of the third dispensing hole (171) gradually decreases from both sides of the width direction of the three-stage dispensing plate (157) toward the middle of the width direction of the three-stage dispensing plate (157); and / or, The spacing between two adjacent third dispensing holes (171) on both sides of the width direction of the three-stage dispensing plate (157) increases sequentially towards the middle of the width direction of the three-stage dispensing plate (157).

10. The battery pack potting apparatus according to claim 1, characterized in that, The battery pack potting apparatus further includes a pressure sensor (190), which is mounted on the three-stage dispensing plate (157); and / or, The potting assembly (150) is also provided with a vacuum port (187) for evacuating the battery pack; and / or, The drive assembly (130) includes multiple telescopic drive components. One end of each telescopic drive component is connected to the frame (110), and the other end is connected to the glue-drinking assembly (150). The glue-drinking assembly (150) can move downward or upward under the telescopic drive of the telescopic drive components.

11. A battery pack potting method, characterized in that, The method, applied to the battery pack potting apparatus according to any one of claims 1-10, comprises: Control the movement of the drive assembly (130) to drive the glue-filling assembly (150) to move, so that the three-stage glue-dispensing plate (157) abuts against the top of the battery pack housing; Control the opening of the glue injection hole (165) to inject glue into the battery pack; The glue level is obtained, and it is determined whether the glue level has reached the preset glue level; wherein, the glue level represents the actual glue level of the battery pack. When the glue level reaches the preset injection level, the glue injection hole (165) is closed.

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