A type of energy storage cell module

Abstract

This utility model discloses an energy storage battery cell module, including a cell assembly and an integrated busbar. The cell assembly includes a first cell assembly and a second cell assembly disposed on both sides inside the battery casing. The first and second cell assemblies have the same structure, each including multiple cells arranged sequentially, with a heat dissipation mica sheet disposed between adjacent cells. End plates are disposed on the outer sides of the cells at both ends. The arranged end plates, heat dissipation mica sheets, and cells are fixed by a steel strip to form a cell assembly. The integrated busbar includes a first integrated busbar and a second integrated busbar respectively welded to the first and second cell assemblies. The first and second integrated busbars have the same structure, each including structural components, copper-aluminum busbars, and signal acquisition components. The structural components, copper-aluminum busbars, and signal acquisition components are connected into a whole by hot pressing or riveting. The copper-aluminum busbars are welded to multiple cells of the first or second cell assembly, thereby connecting the multiple cells.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to an energy storage battery cell module. Background Technology

[0002] A battery pack is formed by connecting multiple individual cells or supercapacitors in series and parallel. Multiple cell groups are then connected in series and parallel to form a cell module with a certain voltage and capacity, which is then placed inside a sealed box to form a battery pack.

[0003] The existing battery cell module has a relatively complex structure and is cumbersome to install; the existing battery cell module does not have a heat dissipation structure for the battery cell, resulting in poor overall heat dissipation.

[0004] Therefore, it is necessary to provide an energy storage cell module. Utility Model Content

[0005] This utility model addresses the problems and shortcomings of existing technologies by providing a novel energy storage cell module.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] This utility model provides an energy storage battery cell module, including a battery cell assembly and an integrated busbar;

[0008] The battery cell assembly includes a first battery cell assembly and a second battery cell assembly, which are disposed on both sides inside the battery casing. The first battery cell assembly and the second battery cell assembly have the same structure, each including multiple battery cells arranged in sequence, with a heat dissipation mica sheet disposed between two adjacent battery cells. End plates are disposed on the outer side of the battery cells located at both ends, and the arranged end plates, the heat dissipation mica sheets, and the battery cells are fixed together by a steel strip to form a battery cell assembly.

[0009] The integrated busbar includes a first integrated busbar and a second integrated busbar, which are respectively welded to the first battery cell group and the second battery cell group.

[0010] The first integrated busbar and the second integrated busbar have the same structure, both including structural components, copper-aluminum busbars and signal acquisition components. The structural components, copper-aluminum busbars and signal acquisition components are connected into a whole by hot pressing or riveting. The copper-aluminum busbars are welded to multiple cells of the first cell group or the second cell group respectively, so that the multiple cells are connected.

[0011] Preferably, the heat dissipation mica sheet includes a substrate mica sheet and a support mica sheet. The size of the substrate mica sheet matches the outer dimensions of the battery cell. Multiple support mica sheets are respectively horizontally pasted and fixed on both sides of the upper, middle and lower parts of the substrate mica sheet, forming a horizontal ventilation gap between the battery cell and the substrate mica sheet.

[0012] Preferably, the supporting mica sheet and the substrate mica sheet are bonded together with adhesive foam.

[0013] Preferably, the end plate has a hollow structure, and a triangular vertical groove is provided through the end plate in the vertical direction.

[0014] Preferably, the top of the end plate is provided with a mounting base, and the bottom of the mounting base is provided with a positioning protrusion that matches the vertical groove. The mounting base is fixed by being inserted into the vertical groove through the positioning protrusion. The top surface of the mounting base is provided with a fixing hole.

[0015] Preferably, the steel strip is wound into a ring, and there are two parallel steel strips. The part of the steel strip that contacts the battery cell is covered with heat shrink tubing.

[0016] Preferably, a PC insulating sheet is provided above both the first integrated busbar and the second integrated busbar.

[0017] Preferably, the signal acquisition component is connected to the copper-aluminum busbar to acquire the temperature and voltage of each of the battery cells.

[0018] Preferably, the signal acquisition component is provided with a signal output interface, and the signal acquisition component is connected to the battery management unit through the signal output interface.

[0019] Preferably, the back panel of the battery casing is further fixed with a main positive power connector and a main negative power connector. The main positive power connector is connected to the positive terminal of the first integrated busbar through a main positive copper busbar, and the main negative power connector is connected to the negative terminal of the second integrated busbar through a main negative copper busbar. A fuse is fixed on the inner wall of the front panel of the battery casing. One end of the fuse is connected to the negative terminal of the first integrated busbar through a first copper busbar, and the other end of the fuse is connected to the positive terminal of the first integrated busbar through a second copper busbar, so that the first cell group and the second cell group are connected.

[0020] The positive and progressive effects of this utility model are as follows:

[0021] The energy storage cell module provided by this utility model includes a cell assembly and an integrated busbar. The cell assembly includes a first cell assembly and a second cell assembly disposed on both sides inside the battery casing. The first and second cell assemblies have the same structure, each including multiple cells arranged sequentially, with a heat dissipation mica sheet disposed between adjacent cells. End plates are disposed on the outer sides of the cells at both ends. The arranged end plates, heat dissipation mica sheets, and cells are fixed by a steel strip to form a cell assembly. The integrated busbar includes a first integrated busbar and a second integrated busbar respectively welded to the first and second cell assemblies. The first and second integrated busbars have the same structure, each including structural components, copper-aluminum busbars, and signal acquisition components. The structural components, copper-aluminum busbars, and signal acquisition components are connected into a whole by hot pressing or riveting. The copper-aluminum busbars are welded to multiple cells of the first or second cell assembly, so that multiple cells are connected. The overall structure is reasonably deployed and easy to install.

[0022] Furthermore, this utility model provides heat dissipation mica sheets between the cells of the battery cell assembly. The heat dissipation mica sheet includes a base mica sheet and a supporting mica sheet. There are multiple supporting mica sheets, which are respectively horizontally pasted and fixed on both sides of the upper, middle and lower parts of the base mica sheet, forming a horizontal ventilation gap between the battery cell and the base mica sheet. The ventilation gap is connected to the ventilation channel, which is beneficial to the heat dissipation of each battery cell. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the energy storage cell module in the battery casing according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the energy storage cell module in the battery casing from another angle, according to an embodiment of the present invention.

[0025] Figure 3 This is a top view of the energy storage cell module in the battery casing according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the battery casing after the top cover has been removed and the air duct structure according to an embodiment of the present invention;

[0027] Figure 5 This is a top view of the battery casing after the top cover has been removed and the air duct of this embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the battery cell assembly structure according to an embodiment of the present invention;

[0029] Figure 7 This is a side view of the battery cell assembly according to an embodiment of the present utility model;

[0030] Figure 8 This is a schematic diagram of the heat dissipation mica sheet structure according to an embodiment of the present utility model;

[0031] Figure 9 This is a top view of the end plate according to an embodiment of the present utility model;

[0032] Figure 10 This is a schematic diagram of the mounting base structure according to an embodiment of the present utility model;

[0033] Figure 11 This is a schematic diagram of the integrated busbar structure according to an embodiment of the present utility model;

[0034] Figure 12 This is a schematic diagram of the PC insulating sheet structure according to an embodiment of the present invention;

[0035] Figure 13 This is a schematic diagram showing the connection between the fuse and the first and second copper busbars in an embodiment of the present invention.

[0036] In the picture:

[0037] 1-Battery casing;

[0038] 2-Cell assembly; 21-Cell; 22-Heat dissipation mica sheet; 221-Base material mica sheet; 222-Supporting mica sheet; 223-Ventilation gap; 23-End plate; 231-Vertical groove; 24-Steel strip; 241-Heat shrink tubing; 25-Mounting base; 251-Positioning protrusion; 252-Fixing hole;

[0039] 3- Fan;

[0040] 4-Enclosure ventilation duct;

[0041] 5-Wind deflector;

[0042] 6-Integrated busbar; 61-Structural component; 62-Copper-aluminum busbar; 63-Signal acquisition component; 64-Signal output interface;

[0043] 7-Main positive power connector;

[0044] 8-Total negative force connector;

[0045] 9-Total positive copper busbar;

[0046] 10 - Total negative copper busbar;

[0047] 11-Fuse;

[0048] 12 - First Bronze Bar;

[0049] 13-Second Bronze Bar;

[0050] 14-PC insulating sheet;

[0051] 15 - Communication terminal. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0053] Please see Figures 1-13 This embodiment provides an energy storage cell module, including a cell group 2 and an integrated busbar 6;

[0054] The battery cell assembly 2 includes a first battery cell assembly and a second battery cell assembly, which are located on both sides inside the battery casing 1. The first battery cell assembly and the second battery cell assembly have the same structure, each including a plurality of battery cells 21 arranged in sequence, with a heat dissipation mica sheet 22 arranged between two adjacent battery cells 21. End plates 23 are arranged on the outer side of the battery cells 21 located at both ends. The arranged end plates 23, heat dissipation mica sheets 22 and battery cells 21 are fixed by a steel strip 24 to form the battery cell assembly 2.

[0055] The integrated busbar 6 includes a first integrated busbar and a second integrated busbar, which are respectively welded to the first battery cell group and the second battery cell group.

[0056] The first integrated busbar and the second integrated busbar have the same structure, both including structural component 61, copper-aluminum busbar 62 and signal acquisition component 63. Structural component 61, copper-aluminum busbar 62 and signal acquisition component 63 are connected into a whole by hot pressing or riveting. Copper-aluminum busbar 62 is welded to multiple cells 21 of the first or second battery cell group respectively, so that multiple cells 21 are connected.

[0057] Specifically, a fan 3 is installed in the middle of the back panel of the battery casing 1. The first and second battery cell groups are respectively installed on both sides inside the battery casing 1, forming a ventilation space in the middle. A baffle duct 4 is installed on the inner wall of the battery casing 1 corresponding to the fan 3, and the baffle duct 4 connects to the ventilation space. A baffle plate 5 is installed above the ventilation space, which closes the ventilation space to form a ventilation channel. A ventilation channel connecting each battery cell 21 is built between the two battery cell groups 2. A baffle duct 4 is built between the fan 3 and the ventilation channel. The heat generated by each battery cell 21 is collected through the ventilation channel and the baffle duct 4. When the fan 3 is turned on, it will draw the heat to the energy storage cabinet. The air conditioner in the energy storage cabinet will blow the heat to the outside of the energy storage cabinet through the heat dissipation holes, etc., to achieve efficient heat dissipation.

[0058] Specifically, the back panel of the battery casing 1 is also fixed with a main positive power connector 7 and a main negative power connector 8. The main positive power connector 7 is connected to the positive terminal of the first integrated busbar through a main positive copper busbar 9, and the main negative power connector 8 is connected to the negative terminal of the second integrated busbar through a main negative copper busbar 10. A fuse 11 is fixed on the inner wall of the front panel of the battery casing 1. One end of the fuse 11 is connected to the negative terminal of the first integrated busbar through a first copper busbar 12, and the other end of the fuse 11 is connected to the positive terminal of the first integrated busbar through a second copper busbar 13, so that the first cell group and the second cell group are connected.

[0059] Specifically, the first and second battery cell groups are connected in series.

[0060] In some embodiments, the heat dissipation mica sheet 22 includes a substrate mica sheet 221 and a support mica sheet 222. The size of the substrate mica sheet 221 matches the outer dimensions of the battery cell 21. There are multiple support mica sheets 222, which are respectively horizontally pasted and fixed on both sides of the upper, middle and lower parts of the substrate mica sheet 221, forming a horizontal ventilation gap 223 between the battery cell 21 and the substrate mica sheet 221. The ventilation gap 223 is connected to the ventilation channel.

[0061] In some embodiments, the supporting mica sheet 222 and the substrate mica sheet 221 are bonded together by adhesive foam. The substrate mica sheet 221 has a thickness of 0.5 mm, the supporting mica sheet 222 has a thickness of 2 mm, and the adhesive foam has a thickness of 0.5 mm.

[0062] In some embodiments, the end plate 23 is a hollow structure, and a triangular vertical groove 231 is provided through the end plate 23 in the vertical direction.

[0063] In some embodiments, the top of the end plate 23 is provided with a mounting base 25, and the bottom of the mounting base 25 is provided with a positioning protrusion 251 that matches the vertical groove 231. The mounting base 25 is fixed by being inserted into the vertical groove 231 through the positioning protrusion 251.

[0064] In some embodiments, the top surface of the mounting base 25 is provided with a fixing hole 252.

[0065] Specifically, the total positive copper busbar 9 is connected and fixed to the positive terminal of the first integrated busbar, the total negative copper busbar 10 is connected to the negative terminal of the second integrated busbar, the first copper busbar 12 is connected to the negative terminal of the first integrated busbar, and the second copper busbar 13 is connected to the positive terminal of the first integrated busbar through fasteners (not shown) fixed to the fixing holes 252 of the mounting base 25.

[0066] In some embodiments, the steel strip 24 is wound into a ring, and there are two parallel steel strips 24. The part of the steel strip 24 that contacts the battery cell 21 is covered with heat shrink tubing 241.

[0067] In some embodiments, a PC (polycarbonate) insulating sheet 14 is disposed above both the first integrated busbar and the second integrated busbar.

[0068] Specifically, the PC insulating sheet 14 has an insulating edge extending downward from one side of the edge near the wind deflector 5. The PC insulating sheet 14 is cut and bent from PC sheet material.

[0069] In some embodiments, the signal acquisition component 63 and the copper-aluminum busbar 62 acquire the temperature and voltage of each cell 21.

[0070] Specifically, the copper-aluminum busbar 62 connects multiple cells 21 in the cell group 2 in series.

[0071] In some embodiments, the signal acquisition component 63 is provided with a signal output interface 64, and a battery management unit (not shown) is installed inside the battery housing 1. The signal acquisition component 63 is connected to the battery management unit through the signal output interface 64.

[0072] Specifically, a communication terminal 15 is also provided on the front panel of the battery casing 1, and the battery management unit is electrically connected to the communication terminal 15.

[0073] In some embodiments, both the left and right side panels of the battery casing 1 are provided with ventilation holes.

[0074] Specifically, the battery management unit monitors and manages the voltage and temperature of the battery cell 21 in real time. If the temperature is too high, the fan 3 is activated to cool it down. The enclosure ventilation duct 4 collects the heat generated by the battery cell 21. After the fan 3 is turned on, it blows the heat into the energy storage cabinet. The air conditioning fan in the energy storage cabinet blows the heat out of the cabinet through the heat dissipation holes. The battery management unit transmits the monitored data to the main controller in the energy storage cabinet via the communication terminal 15.

[0075] Specifically, the cold air in the energy storage cabinet enters the battery casing 1 through the ventilation holes, enters the cell group 2 through the ventilation gap 223 to carry away the heat of each cell 21, and is then drawn out to the energy storage cabinet by the fan 3 through the ventilation channel and the enclosure air duct 4.

[0076] In summary, the energy storage battery module provided by this utility model includes a battery cell group 2 and an integrated busbar 6. The battery cell group 2 includes a first battery cell group and a second battery cell group. The first battery cell group and the second battery cell group have the same structure, each including a plurality of batteries 21 arranged in sequence, with a heat dissipation mica sheet 22 arranged between two adjacent batteries 21. End plates 23 are arranged on the outer side of the batteries 21 located at both ends. The arranged end plates 23, heat dissipation mica sheets 22 and batteries 21 are surrounded and fixed by steel strips 24 to form the battery cell group 2. The integrated busbar 6 includes a first integrated busbar and... The second integrated busbar is welded to the first and second battery cell groups, respectively. The first and second integrated busbars have the same structure, each including a structural component 61, a copper-aluminum busbar 62, and a signal acquisition component 63. The structural component 61, the copper-aluminum busbar 62, and the signal acquisition component 63 are connected into a whole by hot pressing or riveting. The copper-aluminum busbar 62 is welded to multiple battery cells 21 of the first or second battery cell group, so that multiple battery cells 21 are connected. The overall structure is reasonably deployed and easy to install.

[0077] Furthermore, this utility model provides a heat dissipation mica sheet 22 between the battery cells 21 in the battery cell assembly 2. The heat dissipation mica sheet 22 includes a base mica sheet 221 and a supporting mica sheet 222. There are multiple supporting mica sheets 222, which are respectively horizontally pasted and fixed on both sides of the upper, middle and lower parts of the base mica sheet 2221, forming a horizontal ventilation gap 223 between the battery cell 21 and the base mica sheet 221. The ventilation gap 223 is connected to the ventilation channel, which is conducive to the heat dissipation of each battery cell 21 and further improves the heat dissipation efficiency.

[0078] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An energy storage cell module, characterized in that, Including battery packs and integrated busbars; The battery cell assembly includes a first battery cell assembly and a second battery cell assembly, which are disposed on both sides inside the battery casing. The first battery cell assembly and the second battery cell assembly have the same structure, each including multiple battery cells arranged in sequence, with a heat dissipation mica sheet disposed between two adjacent battery cells. End plates are disposed on the outer side of the battery cells located at both ends, and the arranged end plates, the heat dissipation mica sheets, and the battery cells are fixed together by a steel strip to form a battery cell assembly. The integrated busbar includes a first integrated busbar and a second integrated busbar, which are respectively welded to the first battery cell group and the second battery cell group. The first integrated busbar and the second integrated busbar have the same structure, both including structural components, copper-aluminum busbars and signal acquisition components. The structural components, copper-aluminum busbars and signal acquisition components are connected into a whole by hot pressing or riveting. The copper-aluminum busbars are welded to multiple cells of the first cell group or the second cell group respectively, so that the multiple cells are connected.

2. The energy storage cell module as described in claim 1, characterized in that, The heat dissipation mica sheet includes a base mica sheet and a support mica sheet. The size of the base mica sheet matches the outer dimensions of the battery cell. There are multiple support mica sheets, which are respectively horizontally pasted and fixed on both sides of the upper, middle and lower parts of the base mica sheet, forming a horizontal ventilation gap between the battery cell and the base mica sheet.

3. The energy storage cell module as described in claim 1, characterized in that, The supporting mica sheet and the substrate mica sheet are bonded together with adhesive foam.

4. The energy storage cell module as described in claim 1, characterized in that, The end plate has a hollow structure, and a triangular vertical groove is provided through the end plate in the vertical direction.

5. The energy storage cell module as described in claim 4, characterized in that, The top of the end plate is provided with a mounting base, and the bottom of the mounting base is provided with a positioning protrusion that matches the vertical groove. The mounting base is inserted into the vertical groove and fixed by the positioning protrusion. The top surface of the mounting base is provided with a fixing hole.

6. The energy storage cell module as described in claim 1, characterized in that, The steel strip is wound into a ring, and there are two parallel steel strips. The part of the steel strip that contacts the battery cell is covered with heat shrink tubing.

7. The energy storage cell module as described in claim 1, characterized in that, PC insulating sheets are provided above both the first integrated busbar and the second integrated busbar.

8. The energy storage cell module as described in claim 1, characterized in that, The signal acquisition component is connected to the copper-aluminum busbar to collect the temperature and voltage of each of the battery cells.

9. The energy storage cell module as described in claim 1, characterized in that, The signal acquisition component is provided with a signal output interface, and the signal acquisition component is connected to the battery management unit through the signal output interface.

10. The energy storage cell module as described in claim 1, characterized in that, The back panel of the battery casing is also fixed with a main positive power connector and a main negative power connector. The main positive power connector is connected to the positive terminal of the first integrated busbar through a main positive copper busbar, and the main negative power connector is connected to the negative terminal of the second integrated busbar through a main negative copper busbar. A fuse is fixed on the inner wall of the front panel of the battery casing. One end of the fuse is connected to the negative terminal of the first integrated busbar through a first copper busbar, and the other end of the fuse is connected to the positive terminal of the first integrated busbar through a second copper busbar, so that the first cell group and the second cell group are connected.

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