Energy storage electric box

Abstract

An energy storage electric box comprises a box body, a battery cell assembly, a movable end plate and a cover plate, and the box body and the cover plate are assembled and connected to define an accommodating space of the battery cell assembly; the battery cell assembly comprises at least two battery cells and an elastic pad, the battery cells are sequentially arranged in the first direction, the elastic pad is arranged between the battery cells, and the movable end plate is in compression joint with the end face of the battery cell located at the outermost end in the first direction; the box body comprises a limiting part which is assembled and connected with the movable end plate. According to the utility model, the elastic pads are arranged between the battery cells and the battery cells are sequentially placed in the box body, then the movable end plate extrudes the battery cells to complete fixation, and the movable end plate is assembled and connected with the limiting part of the box body to lock the whole battery module so as to complete the assembly of the energy storage electric box, so that the battery cells do not need to be grouped outside and then placed in the box body; the assembly process is simplified, parts for assembly are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of energy storage, in particular to an energy storage electric box. Background Art

[0002] In recent years, most energy storage boxes adopt the method of module-in-box, that is, after several battery cells are assembled and shaped, they are put on upper and lower steel ties to form a module, and then the module is hoisted into the box for installation. During the process, it is necessary to continuously assemble fixing parts, such as bolts and other fasteners. This method has more parts and the assembly process is very cumbersome, which invisibly increases the cost of parts and production costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an energy storage box to solve the problem that the energy storage box is complicated to assemble and has many parts.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] An energy storage box comprises a box body, a battery cell assembly, a movable end plate and a cover plate, wherein the box body and the cover plate are assembled and connected to enclose a storage space for the battery cell assembly;

[0006] The battery cell assembly comprises at least two battery cells and elastic pads, the battery cells are arranged in sequence along a first direction, the elastic pads are arranged between the battery cells, and the movable end plate is pressed against the end surface of the battery cell at the outermost end in the first direction;

[0007] The box body comprises a limiting portion, and the limiting portion is assembled and connected with the movable end plate.

[0008] Furthermore, the box body further comprises a guide rail, which is arranged on a side wall of the box body parallel to the first direction, and the guide rail abuts against the battery cell assembly.

[0009] Furthermore, the limiting portion is a limiting plate, and the limiting plate is arranged at one end of the guide rail in the length direction.

[0010] Furthermore, the battery cell assembly also includes a side wall buffer pad and an isolation plate arranged in parallel, the side wall buffer pad and the isolation plate are arranged parallel to the first direction, the isolation plate respectively abuts against one side of the battery cell and the guide rail, and the side wall buffer pad is respectively crimped against the other side of the battery cell and the side wall of the box body.

[0011] Furthermore, it also includes an end face buffer pad, which is crimped to the end face of the battery cell assembly away from the movable end plate and is crimped to the inner wall of the box body.

[0012] Furthermore, it also includes two transmission straight plugs, which are respectively arranged on the box body and the cover plate, and the two transmission straight plugs are positioned opposite to each other, and the straight plugs are located between the movable end plate and the side wall of the box body away from the battery cell assembly.

[0013] Furthermore, the box body also includes a tooling insertion port; the tooling insertion port is arranged on a side wall of the box body away from the battery cell assembly, and a tooling connection portion is provided at a position of the movable end plate that matches the tooling insertion port.

[0014] Furthermore, the box body also includes an insertion port sealing plate and an insertion port sealing gasket, the insertion port sealing gasket is arranged between the tooling insertion port and the insertion port sealing plate, and the insertion plate sealing plate is assembled and connected to the outer wall of the box body.

[0015] Furthermore, the battery cell assembly also includes a heating plate, and the heating plate is arranged between the bottom plate of the box and the battery cell.

[0016] Furthermore, it also includes a pressure strip, which is arranged on the top of the battery core assembly and is assembled and connected to the inner wall of the box.

[0017] The beneficial effects of the utility model are: providing an energy storage box, setting elastic pads between battery cells and placing them into the box in sequence, then squeezing the battery cells through movable end plates to fix them, and assembling and connecting the movable end plates with the limiting parts of the box, locking the entire battery module, completing the assembly of the energy storage box, without the need to group the battery cells externally and then placing them into the box, simplifying the assembly process and reducing the number of assembly parts, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exploded view of an energy storage box in an embodiment of the utility model;

[0019] Figure 2 An assembly of an energy storage box in an embodiment of the utility model Figure 1 ;

[0020] Figure 3 An assembly of an energy storage box in an embodiment of the utility model Figure 2 ;

[0021] Figure 4 It is a partial assembly diagram of an energy storage box in an embodiment of the utility model;

[0022] Figure 5 A cross-sectional view of an energy storage box in an embodiment of the utility model;

[0023] Description of labels:

[0024] 1. Box body; 2. Battery cell; 3. Elastic pad; 4. Movable end plate; 5. Cover plate;

[0025] 6. Limiting part; 7. Guide rail; 8. Side wall cushion; 9. Isolation plate;

[0026] 10. End face buffer pad; 11. Transmission straight plug; 12. Tooling insertion port;

[0027] 13. Insertion port sealing plate; 14. Insertion port sealing pad; 15. Heating plate;

[0028] 16. Layering strip; 17. Integrated busbar. DETAILED DESCRIPTION

[0029] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0030] Please refer to Figures 1 to 5 , an energy storage box, comprising a box body 1, a battery cell assembly, a movable end plate 4 and a cover plate 5, wherein the box body 1 and the cover plate 5 are assembled and connected to enclose a storage space for the battery cell assembly;

[0031] The battery cell assembly comprises at least two battery cells 2 and elastic pads 3, the battery cells 2 are arranged in sequence along a first direction, the elastic pads 3 are arranged between the battery cells 2, and the movable end plate 4 is pressed against the end surface of the battery cell 2 located at the outermost end in the first direction;

[0032] The box body 1 includes a limiting portion 6 , and the limiting portion 6 is assembled and connected to the movable end plate 4 .

[0033] From the above description, it can be seen that the beneficial effect of the utility model is that: elastic pads 3 are arranged between the battery cells 2 and the battery cells 2 and are placed in the box body 1 in sequence, and then the battery cells 2 are squeezed by the movable end plate 4 to complete the fixation, and the movable end plate 4 is assembled and connected with the limiting part 6 of the box body 1 to lock the entire battery module. The assembly of the energy storage box is completed without grouping the battery cells 2 externally and then placing them in the box body 1, which simplifies the assembly process, reduces the number of assembly parts, and improves production efficiency.

[0034] In an embodiment of the present utility model, the box body 1 further comprises a guide rail 7 , and the guide rail 7 is arranged on a side wall of the box body 1 parallel to the first direction, and the guide rail 7 abuts against the battery cell assembly.

[0035] From the above description, it can be seen that the guide rail 7 provided on the inner wall of the box body 1 is used to guide the battery cell assembly, so that when the movable end plate 4 squeezes the battery cell assembly, the battery cell assembly is stably compressed along the first direction until the movable end plate 4 contacts the limit portion 6 to complete the locking.

[0036] In an embodiment of the present utility model, the limiting portion 6 is a limiting plate, and the limiting plate is arranged at one end of the guide rail 7 in the length direction.

[0037] From the above description, it can be seen that in order to save space, a limit plate is set at the end of the guide rail 7. When the movable end plate 4 contacts the limit plate at the end of the guide rail 7, it means that it has been compressed to the preset position, and the locking assembly can be completed without manual positioning.

[0038] In an embodiment of the utility model, the battery cell assembly also includes a side wall buffer pad 8 and an isolation plate 9 arranged in parallel, the side wall buffer pad 8 and the isolation plate 9 are arranged parallel to the first direction, the isolation plate 9 respectively abuts against one side of the battery cell 2 and the guide rail 7, and the side wall buffer pad 8 is respectively crimped against the other side of the battery cell 2 and the side wall of the box body 1.

[0039] From the above description, it can be seen that in order to prevent the battery cell 2 from directly contacting the guide rail 7 and causing local damage to the battery cell 2 due to stress concentration, an isolation plate 9 is set between the battery cell 2 and the guide rail 7. When the movable end plate 4 squeezes the battery cell 2, the entire side of the battery cell 2 is in contact with the isolation plate 9 to avoid stress concentration. At the same time, in order to ensure that the movement direction of the battery cell 2 is as expected, a side wall buffer pad 8 is set on the side wall opposite to the side wall of the box body 1 where the isolation plate 9 is set, and the battery cell 2 is pressed from the side to avoid a chaotic arrangement of the battery cell 2.

[0040] In an embodiment of the utility model, an end surface buffer pad 10 is further included. The end surface buffer pad 10 is crimped to the end surface of the battery cell assembly away from the movable end plate 4 and is crimped to the inner wall of the box body 1 .

[0041] From the above description, it can be seen that an end face buffer pad 10 is provided and is provided between the battery cell assembly and the inner wall of the box body 1 to prevent the battery cell 2 from directly abutting against the inner wall and causing damage, that is, an end face buffer pad 10 and a movable end face are respectively provided at both ends of the battery cell assembly, and the end face buffer pad 10 alleviates and absorbs the impact force caused by the extrusion of the movable end face to protect the battery cell 2.

[0042] In an embodiment of the utility model, two transmission straight plugs 11 are further included. The two transmission straight plugs 11 are respectively arranged at relative positions of the box body 1 and the cover plate 5. The straight plugs are located between the movable end plate 4 and the side wall of the box body away from the battery cell assembly.

[0043] From the above description, it can be seen that the movable end plate 4 divides the space of the box body 1 into two parts, one part is for setting the battery cell assembly, and the other part is used as an operating space. The operating space is used to apply external force to the movable end plate 4. After the assembly is completed, this part serves as the line outlet of the battery cell 2 and is connected to the transmission straight plug 11, which facilitates the assembly of the energy storage box body 1.

[0044] In an embodiment of the utility model, the box body 1 further comprises a tool insertion opening 12 , and the tool insertion opening 12 is arranged on a side wall of the box body away from the battery cell assembly; the movable end plate 4 is provided with a tool connection portion at a position matching the tool insertion opening 12 .

[0045] From the above description, it can be known that a tool insertion opening 12 is provided on the side wall close to the movable end plate 4 to simplify the extrusion operation. By inserting the extrusion tool into the tool insertion opening 12 in the first direction, the extrusion force can be applied, thereby simplifying the assembly process.

[0046] In an embodiment of the utility model, the box body 1 also includes an insertion port sealing plate 13 and an insertion port sealing gasket 14, the insertion port sealing gasket 14 is arranged between the tooling insertion port 12 and the insertion port sealing plate 13, and the insertion plate sealing plate is assembled and connected to the outer wall of the box body 1.

[0047] As can be seen from the above description, the insertion port sealing plate 13 and the insertion port sealing gasket 14 are provided to ensure the airtightness of the box body 1 after assembly, thereby improving the protective effect of the box body 1.

[0048] In an embodiment of the utility model, the battery cell assembly further includes a heating plate 15, and the heating plate 15 is arranged between the bottom plate of the box body 1 and the battery cell 2. The heating plate 15 is arranged at the bottom of the box body 1 to facilitate the start-up of the battery cell 2 under low temperature conditions.

[0049] In the embodiment of the utility model, a pressure strip 16 is further included. The pressure strip 16 is arranged on the top of the battery core assembly and is assembled and connected with the inner wall of the box body 1.

[0050] From the above description, it can be seen that a pressure plate is arranged at the top of the battery cell assembly to prevent the battery cell 2 from moving in the vertical direction and ensure the stability of movement during the extrusion assembly process.

[0051] The utility model provides an energy storage box 1, which simplifies the assembly process of a battery module, and is specifically described below in conjunction with an embodiment.

[0052] Please refer to Figures 1 to 5 , Embodiment 1 of the present utility model is:

[0053] An energy storage box comprises a box body 1, a battery cell assembly, a movable end plate 4 and a cover plate 5, wherein the box body 1 and the cover plate 5 are assembled and connected to enclose a storage space for the battery cell assembly; the battery cell assembly comprises at least two battery cells 2 and elastic pads 3, the battery cells 2 are arranged in sequence along a first direction, the elastic pads 3 are arranged between the battery cells 2, and the movable end plate 4 is crimped to the end face of the battery cell 2 located at the outermost end in the first direction; the battery cell 2 is fixed by squeezing the movable end plate 4, and the movable end plate 4 is assembled and connected with the limiting portion 6 of the box body 1 to lock the entire battery module, thereby completing the assembly of the energy storage box, without having to group the battery cells 2 externally and then put them into the box body 1, thereby simplifying the assembly process, reducing the number of assembly parts, and improving production efficiency.

[0054] Specifically, instant noodles are selected as the elastic pad 3 .

[0055] Preferably, the battery cell assembly further includes a heating plate 15, which is arranged between the bottom plate of the box body 1 and the battery cell 2. The heating plate 15 is arranged at the bottom of the box body 1 to facilitate the start-up of the battery cell 2 under low temperature conditions. It also includes an integrated busbar 17 and a pressure strip 16. After the integrated busbar 17 is connected to the battery cell 2, the pressure strip 16 is arranged at the top of the battery cell assembly and is assembled and connected with the inner wall of the box body 1. A pressure plate is arranged at the top of the battery cell assembly to prevent the battery cell 2 from moving in the vertical direction and ensure the stability of movement during the extrusion assembly process.

[0056] Please refer to Figures 1 to 5 , Embodiment 2 of the present utility model is:

[0057] On the basis of the first embodiment, the box body 1 further includes a guide rail 7, which is arranged on the side wall of the box body 1 parallel to the first direction, and the guide rail 7 abuts against the battery cell assembly. The guide rail 7 arranged on the inner wall of the box body 1 is used to guide the battery cell assembly, so that when the movable end plate 4 squeezes the battery cell assembly, the battery cell assembly is stably compressed along the first direction until the movable end plate 4 contacts the limit portion 6, and the locking is completed.

[0058] At the same time, in order to save space, a limit part 6 is set at the end of the guide rail 7. The limit part 6 is a limit plate. When the movable end plate 4 contacts the limit plate at the end of the guide rail 7, it means that it has been compressed to the preset position, and the locking assembly can be completed without manual positioning.

[0059] The battery cell assembly also includes a side wall buffer pad 8 and a separator plate 9 which are arranged in parallel. The side wall buffer pad 8 and the separator plate 9 are arranged in parallel with the first direction. The separator plate 9 abuts against one side of the battery cell 2 and the guide rail 7 respectively, and the side wall buffer pad 8 presses against the other side of the battery cell 2 and the side wall of the box body 1 respectively. That is, in order to prevent the battery cell 2 from directly contacting the guide rail 7 and causing local damage to the battery cell 2 due to stress concentration, a separator plate 9 is arranged between the battery cell 2 and the guide rail 7. When the movable end plate 4 squeezes the battery cell 2, the entire side of the battery cell 2 contacts the separator plate 9 to avoid stress concentration. At the same time, in order to ensure that the movement direction of the battery cell 2 is in line with expectations, a side wall buffer pad 8 is arranged on the side wall opposite to the side wall of the box body 1 where the separator plate 9 is arranged, and the battery cell 2 is pressed from the side to avoid a chaotic arrangement of the battery cell 2. Specifically, the side wall buffer pad 8 is made of foam, and the separator plate 9 is a PC board.

[0060] Please refer to Figures 1 to 5 , Embodiment 3 of the present utility model is:

[0061] On the basis of the first embodiment, an end face buffer pad 10 is provided, and is provided between the battery cell assembly and the inner wall of the box body 1 to prevent the battery cell 2 from directly contacting the inner wall and causing damage, that is, the end face buffer pads 10 and the movable end faces are provided at both ends of the battery cell assembly, and the end face buffer pads 10 relieve and absorb the impact force caused by the extrusion of the movable end faces to protect the battery cell 2. At the same time, two transmission straight plugs 11 are also included, and the two transmission straight plugs 11 are respectively provided at the relative positions of the box body 1 and the cover plate 5, and the straight plugs are located between the movable end plate 4 and the inner wall of the box body 1 close to the movable end plate 4 in the first direction. That is, the movable end plate 4 divides the space of the box body 1 into two parts, one part is provided with the battery cell assembly, and the other part is used as the operating space, which is used as the operating space to apply external force to the movable end plate 4. After the assembly is completed, this part is used as the line outlet of the battery cell 2 and is connected to the transmission straight plug 11, which facilitates the assembly of the energy storage box body 1. Specifically, the material of the end face buffer pad 10 is foam.

[0062] Preferably, the transmission straight plug 11 located on the cover plate 5 is an output straight plug, and the transmission straight plug 11 located on the bottom plate of the box body 1 is an input straight plug. The two are located opposite to each other, which is convenient for joint power supply of multiple energy storage boxes 1.

[0063] Please refer to Figures 1 to 5 , the fourth embodiment of the utility model is:

[0064] On the basis of the first embodiment, the box body 1 further includes a tool insertion port 12, which is arranged on the side wall of the box body 1 away from the battery cell assembly; and a tool connection portion is provided at the position where the movable end plate 4 matches the tool insertion port 12. The tool insertion port 12 is provided on the side wall close to the movable end plate 4 to simplify the extrusion operation. By inserting the extrusion tool into the tool insertion port 12 in the first direction, the extrusion force can be applied, thereby simplifying the assembly process. The box body 1 further includes an insertion port sealing plate 13 and an insertion port sealing gasket 14, which are arranged between the tool insertion port 12 and the insertion port sealing plate 13, and the insertion plate sealing plate is assembled and connected to the outer wall of the box body 1. The insertion port sealing plate 13 and the insertion port sealing gasket 14 are provided to ensure the airtightness of the box body 1 after the assembly is completed, thereby enhancing the protective effect of the box body 1.

[0065] Specifically, the assembly process of the energy storage box is as follows:

[0066] Step 1: attach the heating plate 15 to the bottom of the box 1 to heat the battery cell 2 in a low temperature environment;

[0067] Step 2: Attach foam to the battery cell 2, the two ends of the battery cell 2, and the side foam to one side of the box. Put the battery cells 2 in one by one. After all the battery cells 2 are in, insert the PC board on the other side to prevent the battery cells 2 from moving sideways.

[0068] Step 3: Place the movable end plate 4 against the battery cell 2, insert the extrusion tooling from the extrusion tooling insertion port 12 of the box body 1, squeeze the movable end plate 4 to the limit position in the box, and then squeeze the battery cell 2 into place, lock the movable end plate 4, withdraw the extrusion tooling, and install the extrusion insertion port sealing gasket 14 and the insertion port sealing plate 13;

[0069] Step 4: Install the integrated busbar 17 on the battery cell 2 and install the pressure strip 16 to limit the up and down movement of the battery cell 2;

[0070] Step 5: Install the input straight plug at the bottom of box 1 and the output straight plug on the box cover for stacking and connecting the electrical boxes in series;

[0071] Step 6: Install the box cover gasket and cover plate 5.

[0072] In summary, the utility model provides an energy storage box, in which elastic pads are arranged between battery cells and the battery cells are placed inside the box in sequence, and then the battery cells are fixed by squeezing the battery cells through movable end plates, and the movable end plates are assembled and connected with the limiting parts of the box to lock the entire battery module, thereby completing the assembly of the energy storage box. There is no need to group the battery cells externally and then put them into the box, which simplifies the assembly process, reduces the number of assembly parts, and improves production efficiency.

[0073] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. An energy storage box, characterized in that: It comprises a box body, a battery cell assembly, a movable end plate and a cover plate, wherein the box body and the cover plate are assembled and connected to enclose a storage space for the battery cell assembly; The battery cell assembly comprises at least two battery cells and elastic pads, the battery cells are arranged in sequence along a first direction, the elastic pads are arranged between the battery cells, and the movable end plate is pressed against the end surface of the battery cell at the outermost end in the first direction; The box body comprises a limiting portion, and the limiting portion is assembled and connected with the movable end plate.

2. An energy storage box according to claim 1, characterized in that: The box body further comprises a guide rail, which is arranged on a side wall of the box body parallel to the first direction, and the guide rail abuts against the battery core assembly.

3. An energy storage box according to claim 2, characterized in that: The limiting portion is a limiting plate, and the limiting plate is arranged at one end of the guide rail in the length direction.

4. The energy storage box according to claim 2, characterized in that: The battery cell assembly also includes a side wall buffer pad and an isolation plate arranged in parallel, the side wall buffer pad and the isolation plate are arranged parallel to the first direction, the isolation plate respectively abuts against one side of the battery cell and the guide rail, and the side wall buffer pad is respectively pressed against the other side of the battery cell and the side wall of the box body.

5. The energy storage box according to claim 1, characterized in that: It also includes an end face buffer pad, which is crimped to the end face of the battery cell assembly away from the movable end plate and is crimped to the inner wall of the box.

6. The energy storage box according to claim 1, characterized in that: It also includes two transmission straight plugs, which are respectively arranged on the box body and the cover plate. The two transmission straight plugs are positioned opposite to each other, and the straight plugs are located between the movable end plate and the side wall of the box body away from the battery cell assembly.

7. The energy storage box according to claim 1, characterized in that: The box body also includes a tool insertion port; the tool insertion port is arranged on a side wall of the box body away from the battery core assembly, and a tool connection portion is arranged at a position of the movable end plate that matches the tool insertion port.

8. The energy storage box according to claim 7, characterized in that: The box body also includes an insertion port sealing plate and an insertion port sealing gasket, wherein the insertion port sealing gasket is arranged between the tooling insertion port and the insertion port sealing plate, and the insertion port sealing plate is assembled and connected to the outer wall of the box body.

9. The energy storage box according to claim 1, characterized in that: The battery cell assembly further includes a heating plate, which is arranged between the bottom plate of the box and the battery cell.

10. The energy storage box according to claim 1, characterized in that: It also includes a pressure strip, which is arranged on the top of the battery core assembly and is assembled and connected with the inner wall of the box.

Images