Integrated waterproof battery pack

Abstract

The utility model relates to the technical field of battery packs, and discloses an integrated waterproof battery pack, which comprises an upper shell and a lower shell, the lower shell and external equipment are integrally formed by injection molding, the lower shell and the upper shell are connected to form a closed accommodating cavity, and a battery cell component and a PCM (Pulse Code Modulation) plate are positioned in the accommodating cavity formed by the lower shell and the upper shell; the upper shell body comprises an upper cover and a rubber ring used for being connected with the lower shell body in a sealed mode, and the upper cover and the rubber ring are machined and formed through the double-shot molding technology. Wherein the upper shell and the lower shell are connected and matched to form two wire harness openings, the two wire harness openings are both provided with SR wire protecting sleeve structures, and the wire harness openings are in interference fit with the SR wire protecting sleeve structures, so that the wire harness is sealed and waterproof. According to the integrated structure of the lower shell and the external equipment, mold opening pieces can be reduced, and the upper shell is formed through a double-shot molding process and is matched and fixed with the lower shell, so that the waterproof effect of the battery pack is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of battery pack, concretely relates to an integrated waterproof battery pack. BACKGROUND

[0002] With the progress of science and technology, the development of electrical appliances is also various, and more and more electrical appliances adopt the scheme of built-in power supply to realize mobile work and avoid the restriction distance of wire harness.

[0003] Most electrical appliances use battery pack for built-in power supply, and the commonly used consumer soft pack battery pack does not have waterproof function, and more and more water machines and dust collectors on the market need to use battery pack as built-in power supply, if the battery pack structure is not sealed, the dust and water vapor in the external environment and other harsh use environments not only bring challenges to the service life of the product, but also bring great safety hazards to the use of the product.

[0004] At present, the battery pack is fixed in the whole machine as a single built-in part, and in order to stabilize the structure, the battery pack needs to be additionally designed with a shell, which increases the production cost. The traditional waterproof idea of built-in battery pack is to design the whole machine into a sealed cavity, and then place the battery pack in it, seal the whole machine cavity by pouring glue, so as to achieve the waterproof effect. However, the battery pack is filled with glue, which is not easy to remove the glue from the battery pack, and it is also difficult to detect, maintain or replace the battery pack again. UTILITY MODEL CONTENTS

[0005] In order to solve the defects of the prior art, the utility model provides a soft pack battery pack connecting structure, the lower shell is integrally designed with an external device, the number of molds is reduced, the upper shell is sealed and connected with the lower shell by using a double-color injection molding process, stable waterproof effect is achieved, and the later disassembly and maintenance are facilitated.

[0006] The technical effects achieved by the utility model are realized through the following aspects:

[0007] The utility model provides a kind of integrated waterproof battery pack, comprising:

[0008] Upper shell and lower shell, the lower shell is integrally injection molded with an external device, the lower shell and the upper shell are detachably connected and form airtight accommodating cavity, and the cell assembly and PCM plate are located in the accommodating cavity formed by the lower shell and the upper shell;

[0009] The upper shell includes an upper cover and a rubber ring for connecting and sealing with the lower shell, and the upper cover and the rubber ring are processed and formed by using a double-color injection molding process.

[0010] The upper shell and the lower shell are connected and matched to form two wire harness ports, and the wire harness ports are provided with SR wire protection sleeve structures, and the wire harness ports and the SR wire protection sleeve structures are in interference fit to realize wire harness sealing and waterproof.

[0011] In some implementations, the SR wire protection sleeve structure is matched with the wire harness port and is provided with sealing glue at the connection thereof.

[0012] In some implementations, the upper cover is provided with a plurality of buckles on one of the rubber rings, and the buckles are distributed in a circumferential direction at intervals, and the other is provided with a plurality of buckle grooves corresponding to the buckles, and the buckles are matched with the buckle grooves.

[0013] In some implementations, the upper cover is made of a composite material of PC and ABS, and the rubber ring is made of a TPE material.

[0014] In some implementations, the upper shell and the lower shell are connected through a buckle mechanism, and the upper shell and the lower shell are also fixed through fastening screws.

[0015] In some implementations, the outer wall of the upper shell is provided with a fixing portion, and the outer wall of the lower shell is provided with a fixing column opposite to the fixing portion.

[0016] The fixing portion is provided with a through threaded hole, one end face of the fixing column is provided with a fastening threaded hole opposite to the through threaded hole, the fastening screw passes through the through threaded hole and is matched with the fastening threaded hole to fix the upper shell on the lower shell.

[0017] In some implementations, the integrated waterproof battery pack further comprises a support, and the cell assembly further comprises a cell adapter plate, and the support is arranged between the cell adapter plate and the PCM plate and is used for separating the cell adapter plate and the PCM plate.

[0018] In some implementations, the PCM plate is fixed on the support.

[0019] In some implementations, the support is provided with an opening through which the wire harness passes.

[0020] In some implementations, the support is fixed in the lower shell, and the cell assembly is limited and fixed through the support and the lower shell.

[0021] In summary, the utility model has at least the following advantages:

[0022] The utility model provides an integrated waterproof battery pack, lower casing passes through and external equipment integrated injection moulding, can reduce the number of production opening mould piece, has saved material cost and production processing cost, upper casing adopts two -color injection moulding technology processing and forms, the rubber ring of upper casing and lower casing abut, to realize whole better sealing, thereby reach the effect that the battery pack is waterproof. Upper casing and lower casing between detachable connection, convenient for technical personnel to the battery pack maintenance or replacement. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the explosion structure schematic view of the integrated waterproof battery pack of the utility model embodiment 1.

[0024] Figure 2 It is the explosion structure schematic view of the upper casing of the utility model embodiment 1.

[0025] Figure 3 It is the structure schematic view of SR wire cover structure and wire harness port of the utility model embodiment 1.

[0026] Figure 4 It is the explosion structure schematic view of the integrated waterproof battery pack of the utility model embodiment 2.

[0027] Figure 5 It is the structure schematic view of lower casing and support of the utility model embodiment 3.

[0028] Mark in the drawing:

[0029] 1, upper casing, 11, upper cover, 111, fixed part, 112, bayonet, 12, rubber ring, 13, fastening screw, 2, lower casing, 21, fixed column, 22, socket, 3, electric core subassembly, 4, PCM board, 5, wire harness port, 51, SR wire cover structure, 52, sealing glue, 6, support. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantage of the utility model embodiment clearer, the following will combine the drawings in the utility model embodiment, and the technical scheme in the utility model embodiment is clearly and completely described. The described embodiment is a part of the embodiment of the utility model, but not all the embodiment.

[0031] Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents the selected embodiment of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled in the art without making creative efforts belong to the scope of the protection of the utility model.

[0032] Embodiment 1:

[0033] Please refer to the attached Figures 1 to 3 The utility model discloses an integrated waterproof battery pack, comprising: upper shell 1 and lower shell 2, lower shell 2 and external equipment integral injection molding, lower shell 2 and upper shell 1 between detachable connection and form the sealed accommodation cavity, electric core subassembly 3 and PCM board 4 are located in the accommodation cavity formed by lower shell 2 and upper shell 1, upper shell 1 includes upper cover 11 and be used for with lower shell 2 connection seal's rubber ring 12, upper cover 11 and rubber ring 12 adopt two -color injection molding process and form, wherein, upper shell 1 and lower shell 2's connection cooperation forms two wire harness port 5, two wire harness port 5 all are equipped with SR wire sleeve structure 51, wire harness port 5 and SR wire sleeve structure 51 interference fit, to realize wire harness sealing waterproof.

[0034] Specifically, lower shell 2 and external equipment integral injection molding, so that lower shell 2 structure is more stable, also saved the cost of additional mold. Upper shell 1 includes the upper cover 11 of hard rubber material and the rubber ring 12 of soft rubber material, the upper cover 11 is formed with the rubber ring 12 by two-color injection molding process, and the two-color injection molding process makes the structure of the upper shell 1 more stable, and can effectively reduce the production cost. Upper shell 1 and lower shell 2 are matched, and the two are detachably connected and connected to form a sealed accommodation cavity. The electric core subassembly 3 and the PCM board 4 of the integrated waterproof battery pack are placed in the accommodation cavity. The sealing and waterproof effect of the integrated waterproof battery pack is realized by the cooperation of the upper shell 1 and the lower shell 2.

[0035] It can be understood that the rubber ring 12 of the upper shell 1 is arranged at the connecting portion abutting against the lower shell 2, the rubber ring 12 can be deformed under the pressure of the compression, thereby filling the gap at the connecting portion, preventing water vapor from penetrating from the gap, and making the sealing property of the integrated waterproof battery pack better. The output line and the input line need to be led out from the inside of the integrated waterproof battery pack. The upper shell 1 and the lower shell 2 are provided with opposite semicircular openings at the connecting portion. The two semicircular openings form the wire harness port 5 by the combination of the upper shell 1 and the lower shell 2. The wire harness port 5 is two, corresponding to the output line and the input line respectively. In order to avoid the influence of the non-sealing wire harness port 5 on the overall waterproof effect, the SR wire sleeve structure 51 is arranged on the led-out wire harness, and the SR wire sleeve structure 51 is located in the wire harness port 5 and abuts against the inner wall of the wire harness port 5.

[0036] When assembling, the upper shell 1 and the lower shell 2 are connected and fixed, the rubber ring 12 is deformed under the pressure of the upward and downward extrusion, thereby filling the gap at the connecting portion to realize the sealing and waterproof effect. The SR wire sleeve structure 51 in the wire harness port 5 is extruded upward and downward, so as to realize the interference fit between the SR wire sleeve structure 51 and the upper shell 1, the lower shell 2 and the wire harness, and achieve the sealing and waterproof effect of the wire harness port 5.

[0037] Embodiment 2:

[0038] For better waterproof effect, as shown in Figure 4 The SR wire cover structure 51 is matched with the wire harness port 5 and provided with sealing glue 52 at the connecting position thereof in some embodiments.

[0039] Specifically, the SR wire cover structure 51 is located in the wire harness port 5 and flush with the opening of the wire harness port 5, and the sealing glue 52 is filled outside the wire harness port 5 for reinforcement sealing. The sealing glue 52 improves the sealing between the SR wire cover structure 51 and the wire harness port 5, and also seals the connection area of the wire harness in the sealing glue 52, thereby further improving the waterproof performance of the integrated waterproof battery pack.

[0040] In some embodiments, please refer to Figure 2 The upper cover 11 and one of the rubber rings 12 are provided with a plurality of buckles which are distributed in a circumferential direction at intervals, and the other is provided with a plurality of buckle grooves corresponding to the buckles one by one, and the buckles are matched with the buckle grooves.

[0041] Specifically, the upper cover 11 is provided with a groove structure matched with the rubber ring 12, which facilitates positioning and setting of the rubber ring 12. The rubber ring 12 and the upper cover 11 are fixed by the cooperation of the buckle and the buckle groove. The buckle can be arranged on the rubber ring 12, and the buckle groove can be arranged on the upper cover 11. Alternatively, the buckle groove can be arranged on the rubber ring 12, and the buckle can be arranged on the upper cover 11. The actual situation can be determined as long as the rubber ring can be limited and fixed in the upper cover 11.

[0042] The rubber ring 12 can be replaced during later maintenance to avoid a decrease in waterproof performance, because the rubber ring 12 can be detachably connected with the upper cover 11 through the cooperation of the buckle and the buckle groove. The buckles and the buckle grooves are arranged opposite to each other and distributed in a circumferential direction at intervals, so that the rubber ring 12 is fixed more stably in the upper cover 11 and will not be offset or misaligned during pressing. The number of buckles and buckle grooves can be determined according to actual production needs, which is not limited in the present application.

[0043] Further, the upper cover 11 is made of a composite material of PC and ABS, and the rubber ring 12 is made of TPE material. The integrated waterproof battery pack is prone to collision and extrusion during transportation and use. The upper cover 11 made of a composite material of PC and ABS can improve the overall strength and toughness and is not prone to rupture or deformation. The rubber ring 12 is made of TPE material, which has good elastic recovery ability and can quickly recover to its original state after being compressed or stretched to a certain extent. The rubber ring 12 can ensure that the rubber ring 12 is tightly attached to the sealing surface, effectively preventing water penetration. In addition, the rubber ring 12 made of TPE material is not prone to permanent deformation even under long-term compression, and can maintain stable sealing performance.

[0044] In some embodiments, the upper shell 1 and the lower shell 2 are connected by a buckle mechanism, and the upper shell 1 and the lower shell 2 are also fixed by a fastening screw 13.

[0045] Specifically, a plurality of buckles 112 are arranged on the edge of the outer wall of the upper shell 1, and a plurality of sockets 22 corresponding to the buckles 112 are arranged on the outer wall of the lower shell 2 at corresponding positions, the buckles 112 and the sockets 22 can be buckled and matched, and the combination of the buckles 112 and the sockets 22 is a buckle mechanism. The upper shell 1 is first positioned and pre-fixed with the lower shell 2 through the buckle mechanism, which facilitates the adjustment of the position, so that the rubber ring 12 in the upper shell 1 is docked in place, avoiding the direct fixing which may easily lead to poor sealing of the product. After the upper shell 1 is pre-fixed, it is reinforced by the fastening screw 13 to realize the compression of the rubber ring 12, so that the sealing effect is better.

[0046] In order to avoid opening holes in the integrated waterproof battery pack, in some embodiments, the outer wall of the upper shell 1 is provided with a fixing part 111, and the outer wall of the lower shell 2 is provided with a fixing column 21 opposite to the fixing part 111; the fixing part 111 is provided with a through threaded hole, and the fixing column 21 is provided with a fastening threaded hole opposite to the through threaded hole on one end surface; the upper shell 1 is fixed on the lower shell 2 by the fastening screw 13 passing through the through threaded hole and cooperating with the fastening threaded hole.

[0047] Specifically, the outer wall of the upper shell 1 is provided with a fixing part 111 protruding outward, the fixing part 111 is provided with a through threaded hole facing the lower shell 2, the outer wall of the lower shell 2 is provided with a fixing column 21 opposite to the fixing part 111, and the fixing column 21 is provided with a through threaded hole facing the upper shell 1 on one end, the through threaded hole and the through threaded hole are coaxially arranged, and the diameters of the two are consistent; the fastening screw 13 is arranged, the fastening screw 13 passes through the through threaded hole and rotates with the fastening threaded hole to realize the fastening effect of the upper shell 1 and the lower shell 2.

[0048] In this embodiment, the gap between the wire harness port 5 and the SR wire protection sleeve structure 51 is filled with sealing glue 52 for reinforcement and sealing, ensuring the waterproofness of the wire harness position, so that the integrated waterproof battery pack is sealed as a whole and can adapt to harsh external environments such as dust and water vapor. The upper cover 11 and the rubber ring 12 adopt a buckle connection structure, which can facilitate the replacement of materials during subsequent maintenance. The upper shell 1 is a double-color injection molding structure, in which the upper cover 11 is made of a composite material of PC and ABS, and the rubber ring 12 is made of TPE material, so as to respectively meet different application requirements, making the structure of the integrated waterproof battery pack more widely applicable and having a longer service life. The upper shell 1 is pre-fixed with the lower shell 2 through the buckle structure, which facilitates the positioning between the structures, and then the fastening screw 13 is used to fix and reinforce the upper shell 1 and the lower shell 2 through the fixing part 111 on the outer wall of the upper shell 1 and the fixing column 21 of the lower shell 2, which can effectively avoid the opening of holes in the integrated waterproof battery pack and affect the overall waterproof performance.

[0049] Embodiment 3:

[0050] This embodiment is based on the above-mentioned embodiments, and the integrated waterproof battery pack is further structurally optimized. Please refer to Figure 5 .

[0051] In some embodiments, the integrated waterproof battery pack further comprises a support 6, and the cell assembly 3 further comprises a cell adapter plate. The support 6 is arranged between the cell adapter plate and the PCM plate 4, and is used to separate the cell adapter plate and the PCM plate 4.

[0052] Specifically, the cell assembly 3 further comprises a cell adapter plate for electrical connection between cells and a support 6 for protection. The support 6 is arranged at one end of the cell assembly 3 close to the upper shell 1. The interior of the integrated waterproof battery pack is divided into two upper and lower cavities by the support 6, so that the cell adapter plate and the PCM plate 4 are respectively located in different cavities, avoiding interference between the cell adapter plate and the PCM plate 4. The support 6 also plays a role in protecting the cell assembly 3.

[0053] In some embodiments, the PCM plate 4 is fixed on the support 6. The support 6 is provided with a corresponding mounting hole, which facilitates the fixation of the PCM plate 4 on the support 6. The support 6 limits and fixes the PCM plate 4, and also plays a role in supporting and protecting, avoiding damage caused by collision between the PCM plate 4 and other components in the internal space of the integrated waterproof battery pack.

[0054] In order to facilitate wiring, in some embodiments, the support 6 is provided with an opening through which a wire harness can pass. In addition to separating the cell adapter plate and the PCM plate 4, the support 6 also has an opening. The wiring on the cell adapter plate can pass through the opening and be connected to the PCM.

[0055] In some embodiments, the support 6 is fixed in the lower shell 2, and the cell assembly 3 is limited and fixed with the lower shell 2 through the support 6.

[0056] Specifically, the support 6 fixes the cell assembly 3 in the lower shell 2, and positions the cell assembly 3 in the middle of the shell by the support 6, so that the cell assembly 3 leaves a gap with the side wall of the shell. The cell assembly 3 may expand during charging and discharging. The reserved gap can provide sufficient space for the expansion of the cell assembly 3, avoiding internal stress of the cell caused by the restriction of the shell due to expansion. The reserved gap can provide a certain buffer space for the cell assembly 3, reducing the direct effect of impact force on the cell. Moreover, the existence of the gap also helps to make the temperature distribution inside the battery more uniform, avoiding abnormal high temperature of a single cell leading to cell damage.

[0057] In the embodiment, the support 6 is arranged in the integrated waterproof battery pack, and is used for separating the cell adapter plate and the PCM plate 4, avoiding mutual interference between the cell adapter plate and the PCM plate 4, and also playing a role of protecting the cell assembly 3. The PCM plate 4 is fixed on the support 6, and an opening for a wire harness to pass through is reserved on the support 6, so as to facilitate assembly and wiring work during production. The cell assembly 3 is fixed through the support 6 and the lower shell 2, the support 6 plays a role of positioning and limiting, separates the cell assembly 3 from the inner wall of the lower shell 2, and enables a certain gap to be reserved between the cell assembly 3 and the inner wall, so that the cell assembly 3 is prevented from directly contacting the lower shell 2, and the safety of the integrated waterproof battery pack is increased.

[0058] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In the description of the present application, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the product of the present application is used, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, structure and operation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0060] In addition, the terms "horizontal", "vertical", "suspension" and the like do not mean that the components must be absolutely horizontal or suspended, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0061] In the utility model, unless another definite provision and limitation, first feature is above or below second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through additional feature between them.

[0062] Although the description of the utility model is combined with above specific embodiment, it is obvious that many substitutions, modifications and changes can be made according to the above-mentioned content by the person skilled in the art. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. An integrated waterproof battery pack, characterized by, The application relates to an integrated waterproof battery pack. The upper shell and the lower shell are integrally injection molded with an external device, and the upper shell and the lower shell are detachably connected and form a sealed accommodating cavity, and a battery cell assembly and a PCM plate are located in the accommodating cavity formed by the upper shell and the lower shell. The upper shell comprises an upper cover and a rubber ring for connecting and sealing with the lower shell, and the upper cover and the rubber ring are formed by a two-color injection molding process. The connection between the upper shell and the lower shell forms two wire harness ports, and the wire harness ports are provided with SR wire protection sleeve structures, and the wire harness ports and the SR wire protection sleeve structures are in interference fit to realize wire harness sealing and waterproofing.

2. The integrated, waterproof battery pack of claim 1, wherein, The SR wire protection sleeve structures are matched with the wire harness ports and are provided with sealing glue at the connection positions.

3. The integrated, waterproof battery pack of claim 1, wherein, The upper cover and one of the rubber rings are provided with a plurality of buckles which are distributed in a circumferential direction, and the other is provided with a plurality of buckle grooves corresponding to the buckles.

4. The integrated waterproof battery pack of any one of claims 1 to 3, wherein, The upper cover is made of a composite material of PC and ABS, and the rubber ring is made of TPE material.

5. The integrated, waterproof battery pack of claim 1, wherein, The upper shell and the lower shell are connected through a buckle mechanism, and the upper shell and the lower shell are also fixed through fastening screws.

6. The integrated, waterproof battery pack of claim 5, wherein, The outer wall of the upper shell is provided with a fixing portion, and the outer wall of the lower shell is provided with a fixing column opposite to the fixing portion. The fixing portion is provided with a through screw hole, and the fixing column is provided with a fastening screw hole opposite to the through screw hole at one end surface, and the fastening screw is passed through the through screw hole and matched with the fastening screw hole to fix the upper shell on the lower shell.

7. The integrated, waterproof battery pack of claim 1, wherein, The integrated waterproof battery pack further comprises a support, and the battery cell assembly further comprises a battery cell adapter plate, and the support is arranged between the battery cell adapter plate and the PCM plate and used for separating the battery cell adapter plate and the PCM plate.

8. The integrated, waterproof battery pack of claim 7, wherein, The PCM plate is fixed on the support.

9. The integrated, waterproof battery pack of claim 8, wherein, The support is provided with an opening through which a wire harness passes.

10. The integrated, waterproof battery pack of any of claims 7 to 9, wherein, The support is fixed in the lower shell, and the battery cell assembly is limited and fixed through the support and the lower shell.

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