Battery PACK module easy to assemble

Abstract

The utility model provides an easy-to-assemble battery PACK module. The easy-to-assemble battery PACK module comprises a box body part, at least one module unit and at least one expansion fixing part, the module unit comprises a plurality of battery core parts which are closely arranged side by side in the thickness direction, the module unit is arranged in the box body part, the outer side face of one of the two battery core parts on the outermost side of the module unit is closely attached to one inner wall of the box body part, and an expansion space is formed between the outer side face of the other battery core part and the other opposite inner wall of the box body part; the at least one expansion fixing part is arranged in the expansion space; the expansion fixing part expands and extrudes and fixes the plurality of battery core parts in the module unit in the box body part. Through the expansion effect of the expansion fixing part, a plurality of battery core parts do not need to be fixed into a group before the module unit is installed into the box body part, meanwhile, after the module unit is installed into the box body part, various modes of bolt fixing, end plate and side plate matched fixing, welding fixing and the like are not needed, materials needed for assembly are saved, the assembly cost is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, and specifically, to an easily assembled battery PACK module. Background Art

[0002] A battery module is a key component in a battery system. It is assembled by multiple battery cells (monolithic batteries) in series or parallel to provide higher voltage and capacity to meet the electrical energy requirements of specific applications. The battery module is not only the basis for the formation of a battery pack but also an essential part in fields such as electric vehicles, energy storage systems, electronic devices, industrial equipment, aerospace, etc.

[0003] Currently, when assembling a battery PACK module, multiple battery cells need to be fixed first to form a semi-finished module, and then the semi-finished module is assembled into a PACK box for use. Existing battery PACK modules often fix multiple battery cells through forms such as bundling with straps, steel belts or pasting with adhesive glue, which takes a long time and increases the volume of the semi-finished module. Moreover, the internal space size of the PACK box does not fully match the size of the semi-finished module, and the semi-finished module will shake when directly placed in the PACK box. Therefore, it is also necessary to fix the semi-finished module in the PACK box through various forms such as tightening with steel belts, fixing with bolts, or welding. This results in the existing battery PACK module having not only complex assembly processes, long time consumption, but also the need to use materials such as bolts, steel belts, side plates, end plates, torque electric screwdrivers or welding equipment, with high assembly costs and low efficiency. Summary of the Utility Model

[0004] In view of the deficiencies of the prior art, the present application provides an easily assembled battery PACK module.

[0005] An easily assembled battery PACK module disclosed in the present application includes: a box body member, at least one module unit, and at least one expansion fixing member; the module unit includes multiple battery cell members arranged side by side and closely attached in the thickness direction. The module unit is disposed within the box body member, and between the outer side surface of one battery cell member among the two outermost battery cell members of the module unit and one inner wall of the box body member is a close fit, and there is an expansion space between the outer side surface of the other battery cell member and the other inner wall of the box body member opposite thereto. At least one expansion fixing member is disposed within the expansion space, and the expansion fixing member expands and squeezes and fixes the multiple battery cell members in the module unit within the box body member.

[0006] Preferably, the expansion fixing member is a vacuum foam, which is coated with a sealing bag.

[0007] Preferably, the expansion force of the expansion fixing member is not less than 500 NM.

[0008] Preferably, the shape of the expansion fixing member is adapted to the shape of the battery cell member, and the expansion fixing member completely covers the side surface of the battery cell member.

[0009] Preferably, the number of the module units and the expansion fixing members is multiple. The multiple module units are arranged along the length direction of the box body member, and the multiple battery cell members in each module unit are arranged along the width direction of the box body member. The multiple expansion fixing members are respectively arranged corresponding to the multiple module units.

[0010] Preferably, the easily assembled battery PACK module further includes an insulating member, and the insulating member is arranged between two adjacent module units.

[0011] Preferably, the easily assembled battery PACK module further includes an adhesive member, and the adhesive member is arranged on the bottom wall of the box body member along the arrangement direction of the multiple battery cell members.

[0012] Preferably, the easily assembled battery PACK module further includes a connector, and the connector is electrically connected to the multiple battery cell members respectively.

[0013] Preferably, the box body member is provided with a wire routing hole, and the wire harness of the connector extends towards the outside of the box body member after passing through the wire routing hole.

[0014] Preferably, the assembled battery PACK module further includes a cover body member, and the cover body member covers the box body member, and a handle is arranged on the surface of the cover body member.

[0015] The beneficial effect of the present application is that after sequentially placing the multiple battery cell members into the box body member, the multiple battery cell members in the module unit are extruded by the expansion of the expansion fixing member and pressed against the inner wall of the box body member, so as to fix the multiple battery cell members in the box body member. Thus, compared with the traditional battery PACK module, it is not necessary to fix the multiple battery cell members into a group before installing the module unit into the box body member, saving the assembly time and the materials required for fixing. At the same time, after the module unit is installed into the box body member, through the expansion effect of the expansion fixing member, the multiple battery cell members can be fixed in the box body member without using various fixing methods such as bolt fixing, cooperation of end plates and side plates for fixing, and welding fixing, simplifying the assembly process, saving the materials required for assembly, reducing the assembly cost, and improving the assembly efficiency. Description of the Drawings

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the easily assembled battery PACK module in the embodiment;

[0018] Figure 2 is a schematic structural diagram of the expansion fixing member in the embodiment;

[0019] Figure 3 It is a schematic structural diagram of the battery cell component in the embodiment;

[0020] Figure 4 It is a schematic structural diagram of the box component and the module unit in the embodiment;

[0021] Figure 5 It is a schematic structural diagram of the box component in the embodiment;

[0022] Figure 6 It is another schematic structural diagram of the easily assembled battery PACK module in the embodiment.

[0023] Reference numerals:

[0024] 1. Box component; 11. Wiring hole; 2. Battery cell component; 3. Expansion fixing component; 4. Insulating component; 5. Adhesive component; 6. Cover component; 61. Handle. Detailed implementation manners

[0025] The following will disclose multiple embodiments of the present application in the form of diagrams. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present application. That is to say, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the diagrams, some well-known and commonly used structures and components will be shown in a simple schematic manner in the diagrams.

[0026] It should be noted that all the directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If this specific posture changes, then the directional indications will also change accordingly.

[0027] In addition, in the present application, the descriptions such as "first", "second", etc. are only for descriptive purposes, and do not particularly refer to the order or sequence. Nor are they used to limit the present application. It is only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0028] To further understand the content, features and effects of the present application, the following embodiments are exemplified and described in detail with reference to the accompanying drawings as follows.

[0029] Referring to Figure 1 , Figure 1 FIG. is a schematic structural diagram of an easily assembled battery PACK module in the embodiment. The easily assembled battery PACK module in this embodiment includes a box body member 1, at least one module unit, and at least one expansion fixing member 3. The module unit includes a plurality of battery cell members 2 arranged side by side and closely attached in the thickness direction. The module unit is disposed within the box body member 1, and one outer side surface of one of the two outermost battery cell members 2 in the module unit is closely attached to an inner wall of the box body member 1, and there is an expansion space between the outer side surface of the other battery cell member 2 and the opposite inner wall of the box body member 1. At least one expansion fixing member 3 is disposed within the expansion space, and the expansion fixing member 3 expands and squeezes the plurality of battery cell members 2 in the module unit to be fixed within the box body member 1.

[0030] When assembling the easily assembled battery PACK module in this embodiment, first, a plurality of battery cell members 2 are sequentially placed side by side into the box body member 1 along their thickness directions, and the plurality of battery cell members 2 are closely attached to form a module unit. Thus, compared with the traditional battery PACK module, there is no need to fix the plurality of battery cell members 2 before loading them into the box body member 1, saving assembly time and the materials required for fixing. Among them, one of the two outermost battery cell members 2 in the module unit is closely attached to the inner wall of the box body member 1, and there is an expansion space, that is, a gap, between the other outermost battery cell member 2 in the module unit and the opposite inner wall of the box body member 1. The expansion fixing member 3 is placed into the gap between the battery cell member 2 and the box body member 1, and the expansion fixing member 3 expands and squeezes the inner wall of the box body member 1 and the plurality of battery cell members 2 in the module unit respectively, so as to squeeze and fix the plurality of battery cell members 2 in the module unit within the box body member 1. Through the expansion effect of the expansion fixing member 3, the plurality of battery cell members 2 in the module unit can be squeezed and pressed against the inner wall of the box body member 1, thereby realizing the fixation of the plurality of battery cell members 2 within the box body member 1. Thus, compared with the traditional battery PACK module, there is no need to fix the plurality of battery cell members 2 into a group before loading the module unit into the box body member 1, saving assembly time and the materials required for fixing. At the same time, after the module unit is loaded into the box body member 1, through the expansion effect of the expansion fixing member 3, the plurality of battery cell members 2 can be fixed within the box body member 1 without using various fixing methods such as bolt fixing, end plate and side plate cooperation fixing, and welding fixing, simplifying the assembly process, saving the materials required for assembly, reducing the assembly cost, and improving the assembly efficiency. Specifically, the battery cell member 2 in this embodiment is a square battery cell, and the thickness direction is the thickness direction of the square battery cell.

[0031] Referring to Figure 2 , Figure 2FIG. 0 is a schematic structural diagram of the expansion fixing member in the embodiment. Preferably, the expansion fixing member 3 is a vacuum foam, and it is coated with a sealed bag. In specific applications, the size of the expansion space is slightly larger than the size of the expansion fixing member 3 when it is not expanded. After placing the expansion fixing member 3 into the expansion space, the sealed bag is punctured to allow air to enter the sealed bag. The vacuum foam expands after absorbing air and gradually fills the expansion space. Then, it continues to expand and starts to squeeze the inner wall of the box member 1 and the module unit, thereby fixing the multiple battery cell components 2 in the module unit within the box member 1. Compared with the traditional battery PACK module, the fixing method in this embodiment is more simple and fast, improving the assembly efficiency and saving the materials required for assembly. It should be particularly noted that when the expansion fixing member 3 is not expanded, the sealed bag is in a sealed vacuum state. The vacuum foam is located inside the sealed bag and in a vacuum environment, and the volume of the vacuum foam is small. Thus, during assembly, the expansion fixing member 3 can be easily placed into the expansion space. After puncturing the sealed bag, the fixing of the module unit can be achieved. That is to say, during assembly, multiple battery cell components 2 are sequentially placed first. When the remaining space in the box member 1 is not enough to place another battery cell component 2, this remaining space is the expansion space. At this time, the unexpanded expansion fixing member 3 can be placed into the expansion space. Furthermore, before placing the expansion fixing member 3 into the expansion space, an expansion fixing member 3 with a size adapted to the expansion space can be placed according to the size of the expansion space, ensuring that the size of the unexpanded expansion fixing member 3 is slightly smaller than the size of the expansion space. In this way, various sizes of box members 1 and various sizes of battery cell components 2 can be adapted for assembly operations, broadening the application scenarios. Specifically, the expansion force of the expansion fixing member 3 is not less than 500 NM, that is, the extrusion force of the vacuum foam on the module unit after expansion is not less than 500 NM. In this way, the stability of fixing the multiple battery cell components 2 within the box member 1 can be ensured. Of course, in other embodiments, the expansion force of the expansion fixing member 3 can select different specifications of vacuum foam according to the actual assembly situation, which is not limited here.

[0032] Refer to together Figure 3 , Figure 3 FIG. 7 is a schematic structural diagram of the battery cell component in the embodiment. Preferably, the shape of the expansion fixing member 3 is adapted to the shape of the battery cell component 2, and the expansion fixing member 3 completely covers the side surface of the battery cell component 2. In specific applications, the expansion fixing member 3 in this embodiment is sheet-shaped, which is convenient for placing into the expansion space. The battery cell component 2 is a square battery cell, and its shape and size are both adapted to the expansion fixing member 3. Moreover, the expansion fixing member 3 completely covers the side surface of the battery cell component 2. Thus, when the expansion fixing member 3 expands and squeezes the battery cell component 2, the extrusion force can be evenly distributed on the side surface of the battery cell component 2. The extrusion force is uniform, avoiding the situation that part of the area of the battery cell component 2 is pressed and sunken due to uneven distribution of the extrusion force received, and at the same time, it can also ensure that the multiple battery cell components 2 will not tip over or their positions will not shift, improving the stability of fixing.

[0033] Refer to again Figure 1, Preferably, the number of module units and expansion fasteners 3 is multiple. The multiple module units are arranged along the length direction of the box body 1, and the multiple battery cell components 2 in each module unit are arranged along the width direction of the box body 1. The multiple expansion fasteners 3 are respectively arranged corresponding to the multiple module units. In specific applications, the number of module units and expansion fasteners 3 in this embodiment is two. The two module units are arranged along the length direction of the box body 1, and the multiple battery cell components 2 in each module unit are arranged along the width direction of the box body 1. That is to say, the connection line between the two module units is perpendicular to the connection line of the multiple battery cell components 2 in one module unit. There is an expansion space between each module unit and the inner wall of the box body 1, and an expansion fastener 3 is arranged in each expansion space. In this way, the number of battery cell components 2 contained in the easily assembled battery PACK module in this embodiment can be increased, which is convenient for later series or parallel connection of the multiple battery cell components 2 to improve the output voltage or capacitance of the module. Of course, in other embodiments, the number of module units and expansion fasteners 3 can also be three, four or more, which can be set according to actual needs and will not be elaborated here.

[0034] Referring to Figure 4 , Figure 4 which is a structural schematic diagram of the box body and the module monomer in the embodiment. Preferably, the easily assembled battery PACK module further includes an insulating member 4, and the insulating member 4 is arranged between two adjacent module units. In specific applications, the insulating member 4 in this embodiment is an insulating partition, which is arranged between two adjacent module units to separate the two adjacent module units and prevent them from coming into contact and short-circuiting due to being too close. At the same time, the insulating partition also cooperates with the box body 1 to limit the module unit between the insulating partition and the inner wall of the box body 1, so that the multiple battery cell components 2 in the module unit are aligned with each other to avoid the situation of position deviation. That is to say, the expansion fastener 3 fixes the multiple battery cell components 2 in the thickness direction of the battery cell component 2, while the insulating partition fixes the multiple battery cell components 2 in the width direction of the battery cell component 2 to avoid the position deviation of the battery cell component 2, thereby improving the fixing effect of the battery cell component 2.

[0035] Referring to Figure 5 , Figure 5 which is a structural schematic diagram of the box body in the embodiment. Preferably, the easily assembled battery PACK module further includes an adhesive member 5, and the adhesive member 5 is arranged on the bottom wall of the box body 1 along the arrangement direction of the multiple battery cell components 2. In specific applications, when the multiple battery cell components 2 are sequentially placed into the box body 1, each time a battery cell component 2 is placed, the adhesive member 5 will adhere to the battery cell component 2 and fix it on the bottom wall of the box body 1 to avoid the position deviation of the battery cell component 2 during the assembly process and improve the assembly efficiency. At the same time, after the assembly is completed, the adhesive member 5 located on the bottom wall of the box body 1 also plays an auxiliary fixing role to further improve the fixing effect of the battery cell component 2 and the stability of the assembly. Specifically, the adhesive member 5 is an adhesive glue.

[0036] Preferably, the easily assembled battery PACK module further includes a connector, which is electrically connected to a plurality of battery cell components 2 respectively. In specific applications, the connector includes a plurality of busbars. In this embodiment, the plurality of battery cell components 2 are connected in series. Adjacent two battery cell components 2 are connected in series through the plurality of busbars, that is, one end of the busbar is connected to the positive terminal of one of the battery cell components 2, and the other end of the busbar is connected to the negative terminal of the adjacent battery cell component 2. Of course, in other embodiments, a parallel or series-parallel connection method can also be adopted. The connector further includes a thermal management system controller and a battery management system. The wiring harnesses of the thermal management system controller and the battery management system are both connected to the plurality of busbars, so as to be electrically connected to the plurality of battery cell components 2. The battery management system controller is used to monitor parameters such as the voltage, current and temperature of the battery cell components 2, and also has functions such as balancing. The thermal management system controller is used to control and maintain the stability of the temperature inside the module unit.

[0037] Referring to Figure 6 , Figure 6 FIG. is another structural schematic diagram of the easily assembled battery PACK module in the embodiment. Preferably, the box body component 1 is provided with a wire routing hole 11, and the wiring harness of the connector passes through the wire routing hole 11 and extends towards the outside of the box body component 1. In specific applications, the connector is arranged inside the box body component 1. The number of the wire routing holes 11 is multiple, and the multiple wire routing holes 11 are all opened on the side wall of the box body component 1. The wiring harnesses of the connector all extend towards the outside of the box body component 1 through the wire routing holes 11, and are used to connect to the outside for charging and discharging or to be connected in series or parallel with other battery PACK modules. Specifically, the easily assembled battery PACK module further includes a cover body component 6, and the cover body component 6 covers the box body component 1. A handle 61 is provided on the surface of the cover body component 6. After the plurality of battery cell components 2 inside the box body component 1 are assembled, the cover body component 6 is covered on the opening at the top of the box body component 1, and the cover body component 6 and the box body component 1 are fixedly connected by means of bolt fixation or welding fixation. At the same time, through the setting of the handle 61, after the assembly is completed, the production personnel can carry the finished module by hand-held the handle 61. In this embodiment, the number of the handles 61 is two, and the two handles 61 are respectively arranged at both ends of the cover body component 6. The box body component 1 is a PACK box body, and the cover body component 6 is a cover body used in cooperation with the PACK box body.

[0038] In summary, after sequentially placing multiple battery cell components 2 into the box body component 1, by puncturing the sealed bag of the expansion fixing component 3, the expansion fixing component 3 sucks in air and expands, which can squeeze multiple battery cell components 2 in the module unit and press them against the inner wall of the box body component 1, thereby realizing the fixation of multiple battery cell components 2 in the box body component 1. Thus, compared with the traditional battery PACK module, it is not necessary to fix multiple battery cell components 2 into a group before installing the module unit into the box body component 1, saving assembly time and the materials required for fixation. At the same time, after the module unit is installed into the box body component 1, through the expansion effect of the expansion fixing component 3, multiple battery cell components 2 can be fixed in the box body component 1 without using various fixing methods such as bolt fixing, cooperation of end plates and side plates for fixing, and welding fixing, simplifying the assembly process, saving the materials required for assembly, reducing the assembly cost, and improving the assembly efficiency.

[0039] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. An easily assembled battery PACK module, characterized in that: include: A box member (1), at least one module unit and at least one expansion fixing member (3); the module unit comprises a plurality of battery core members (2) arranged side by side and closely attached in the thickness direction, the module unit is arranged in the box member (1), and the outer side surface of one of the two outermost battery core members (2) of the module unit is closely attached to an inner wall of the box member (1), and an expansion space is provided between the outer side surface of the other battery core member (2) and the other inner wall opposite to the box member (1), at least one expansion fixing member (3) is arranged in the expansion space, and the expansion fixing member (3) expands and squeezes and fixes the plurality of battery core members (2) in the module unit in the box member (1).

2. The easy-to-assemble battery PACK module according to claim 1, characterized in that: The expansion fixing member (3) is a vacuum foam, which is covered with a sealing bag.

3. The easy-to-assemble battery PACK module according to claim 1, characterized in that: The expansion force of the expansion fixing member (3) is not less than 500 NM.

4. The easy-to-assemble battery PACK module according to claim 1, characterized in that: The shape of the expansion fixing member (3) is compatible with the shape of the battery core member (2), and the expansion fixing member (3) completely covers the side surface of the battery core member (2).

5. The easy-to-assemble battery PACK module according to claim 1, characterized in that: The number of the module units and the expansion fixing parts (3) are both multiple, the multiple module units are arranged along the length direction of the box member (1), the multiple battery core parts (2) in each module unit are arranged along the width direction of the box member (1), and the multiple expansion fixing parts (3) are arranged corresponding to the multiple module units respectively.

6. The easy-to-assemble battery PACK module according to claim 5, characterized in that: It also includes an insulating member (4), wherein the insulating member (4) is arranged between two adjacent module units.

7. The easy-to-assemble battery PACK module according to claim 1, characterized in that: It also includes an adhesive member (5), wherein the adhesive member (5) is arranged on the bottom wall of the box member (1) along the arrangement direction of the plurality of battery core members (2).

8. The easy-to-assemble battery PACK module according to claim 1, characterized in that: It also includes a connector, which is electrically connected to the plurality of electric core components (2) respectively.

9. The easily assembled battery PACK module according to claim 8, characterized in that: The box body (1) is provided with a wiring hole (11), and the wiring harness of the connector passes through the wiring hole (11) and then extends toward the outside of the box body (1).

10. The easy-to-assemble battery PACK module according to claim 1, characterized in that: It also comprises a cover member (6), wherein the cover member (6) is arranged to cover the box member (1), and a handle (61) is provided on the surface of the cover member (6).

Images