Stacked energy storage cell stack

Abstract

The utility model provides a stack type energy storage battery stack which comprises a plurality of battery modules stacked layer by layer, each battery module comprises a box body with an opening in the top surface, a plurality of batteries arranged side by side are arranged in an inner cavity of each box body, the batteries in each box body are connected in series or in parallel to form a group of batteries, and the batteries are connected in series or in parallel to form a group of batteries. Each group of batteries among the box bodies are connected in series or in parallel; at least two sides of the box body are respectively provided with an up-and-down through ventilation pipe section, and a ventilation hole is formed in one surface, facing an inner cavity of the box body, of each ventilation pipe section; after the battery modules are stacked, the ventilation pipe sections at the corresponding positions are communicated up and down to form a ventilation pipeline. According to the utility model, the ventilation pipeline is embedded, the material and construction of the secondary ventilation pipeline are saved, the temperature control in the single battery module box body is realized, and the temperature consistency between batteries is improved, so that the service life of the batteries is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage battery technical field especially relates to a stacked energy storage battery. BACKGROUND

[0002] With the development of energy storage safety, energy storage lead carbon battery safety is more and more recognized in the field of electrochemical energy storage, but the traditional lead battery uses lead as the material, the battery is heavy, and the specific energy is low, so the battery rack mode is generally used for assembling groups in series and parallel, but there is dilute sulfuric acid in the lead battery, and there is a risk of electric leakage and fire caused by contact with the battery rack in the case of battery box rupture or terminal acid climbing.

[0003] The utility model discloses a kind of lead-acid battery energy storage system battery box, it includes battery box mechanism, the side outer wall edge of loading box is provided with hinge piece, the loading box is rotatably connected turnover box cover by hinge piece, fixed positioning plate piece is set on the side outer wall middle end of turnover box cover, and a plurality of groups of ventilation holes are formed on the side outer wall of loading box, and pull-out type loading plate assembly is movably installed in the inner chamber of loading box.

[0004] With the volume of energy storage projects becoming larger and larger, from kW·h to MW·h level, from indoor to outdoor, and large-scale energy storage power stations are generally outdoor due to safety requirements, and do not have on-site assembly operation conditions, so adopting stacking becomes a trend. The energy storage battery using stacking on the market uses liquid cooling for thermal management, but based on the ABS of lead battery shell, the heat conduction is not good, and the cost of liquid cooling equipment is high and the power consumption is high. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems existing in the prior art, the utility model provides a stacked energy storage battery.

[0006] The utility model provides a stacked energy storage battery, which comprises a plurality of battery modules stacked layer by layer, each battery module comprises a box with an open top, the inner cavity of the box is provided with a plurality of batteries arranged side by side, each battery in each box is connected in series or parallel to form a group of batteries, and each group of batteries between the boxes is connected in series or parallel; at least two sides of the box are respectively provided with ventilation pipe sections penetrating up and down, one side of the ventilation pipe section facing the inner cavity of the box is provided with a ventilation hole; the ventilation pipe sections at the corresponding positions are connected in series to form a ventilation pipe after the stacking of each battery module; wherein, at least one ventilation pipe is used for air inlet, and at least one ventilation pipe is used for air outlet; the top of the ventilation pipe for air inlet is connected with an air conditioning ventilation pipe.

[0007] Further, the ventilation pipe sections of each battery module are nested between the upper and lower parts.

[0008] Further, one side of the box is provided with an opening and a detachable front end panel. The bottom of the inner cavity of the box is provided with a pull plate, and the pull plate has a plurality of placement positions for placing batteries. The placement positions are provided with clamping grooves, and the clamping grooves are provided with baffles for separating and fixing the batteries, and also serving as bottom reinforcing ribs. During use, the pull plate can be put into or taken out of the inner cavity of the box through the opening on the side of the box, which facilitates the subsequent maintenance and operation and maintenance of the batteries.

[0009] Further, one end of one short side of the pull plate is provided with a total positive copper bar and a total negative copper bar. The total positive copper bar has a positive terminal hole at the top or near the placement position, and the total positive copper bar has a positive output terminal hole away from the placement position. The total negative copper bar has a negative terminal hole at the top or near the placement position, and the total negative copper bar has a negative output terminal hole away from the placement position. The positive terminals of the batteries in each battery module are connected to the positive terminal holes through positive connection wires, and the negative terminals of the batteries are connected to the negative terminal holes through negative connection wires. The positive connection wires and the negative connection wires are flexible wires, which can avoid vibration during transportation, play a buffering role, and can be flexibly bent to facilitate arrangement.

[0010] Further, the bottom of the box is provided with a hole slot near the total positive copper bar. The positive output terminal hole of the total positive copper bar of the upper battery module and the negative output terminal hole of the total negative copper bar of the lower battery module are connected in series by a wire or a conductive sheet passing through the hole slot.

[0011] Further, the bottom of the placement position is partially hollowed out, so that the wind input by the ventilation duct can effectively circulate, realizing the functions of cooling and heating.

[0012] Further, the front end panel is connected and fixed to the side of the box by bolts.

[0013] Further, the box is provided with a plurality of pressing strips in the long direction at the top, and the top end of the side wall of the box in the short direction is provided with a connecting hole corresponding to the pressing strip. The two ends of the pressing strip are connected and fixed to the corresponding connecting holes by bolts. The pressing strip can prevent the batteries from vibrating during transportation and can also prevent the positive and negative terminals of the batteries from short-circuiting.

[0014] Further, the side walls of the two long sides of the box are provided with vertically extending thickened areas at the side facing the inner cavity. At least part of the top of the thickened area extends upward to form a protrusion protruding from the side of the box. Correspondingly, the bottom of the box is provided with a recess. When the upper and lower adjacent battery modules are stacked, the recess of the upper box cooperates with the protrusion of the lower box. In addition, the side wall of the box without thickening can provide more space for the circulation of heated or cooled air.

[0015] Further, the thickened area is provided with mounting holes for mounting the adjacent battery modules of the upper and lower two layers by using threaded rods, which can be used to fasten the upper and lower two layers of the box, facilitating subsequent handling.

[0016] Further, the top of the battery module of the uppermost layer of the stacked energy storage battery stack is provided with a protective cover, which can prevent dust and prevent battery short circuit, and ensure that the upper battery box has a certain wind pressure.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The energy storage battery stack adopts a stacked design, and the ventilation pipeline is embedded, which saves the material and construction of the secondary ventilation pipeline, realizes temperature control in the single battery module box, improves the temperature consistency between the batteries, and improves the battery life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic view of the stacked energy storage battery stack of the utility model.

[0020] Figure 2 It is a front view structure schematic view of the stacked energy storage battery stack of the utility model when the front end panel is not installed.

[0021] Figure 3 It is a structure schematic view of the stacked energy storage battery module of the utility model.

[0022] Figure 4 It is a front view structure schematic view of the stacked energy storage battery module of the utility model.

[0023] Figure 5 It is a side view structure schematic view of the stacked energy storage battery module of the utility model.

[0024] Figure 6 It is a structure schematic view of the stacked energy storage battery module of the utility model when the battery is installed and the wire is arranged.

[0025] Figure 7 It is a top view structure schematic view of the stacked energy storage battery module of the utility model when the battery is not installed.

[0026] Figure 8 It is a structure schematic view of the stacked energy storage battery module of the utility model when the battery and the front end panel are not installed.

[0027] Figure 9 It is a structure schematic view of the stacked energy storage battery module of the utility model when the pull plate is not installed.

[0028] Figure 10 It is a structure schematic view of the pull plate of the stacked energy storage battery module of the utility model.

[0029] Figure 11 It is a schematic diagram of the wire harness of the battery parallel line in the stacked energy storage battery module of the utility model.

[0030] The figure mark: box 1, pull plate 11, total positive copper row 12, positive electrode wiring hole 121, positive electrode output terminal hole 122, positive electrode connecting wire 123, total negative copper row 13, negative electrode wiring hole 131, negative electrode output terminal hole 132, negative electrode connecting wire 133, clamping groove 14, baffle 15, pressing strip 16, ventilation pipe section 17, ventilation hole 171, thickening area 18, convex part 181, concave part 182, mounting hole 183, battery 2, protective cover 3, front end panel 4. Specific implementation

[0031] As Figures 1-11 shown, the embodiment provides a kind of stacked energy storage battery stack, including the multiple battery modules of layer-by-layer stacking, each battery module includes the box 1 of top surface opening, the inner cavity of box 1 is equipped with multiple side-by-side placed batteries 2, each battery 2 in each box 1 is connected in series or parallel into a group of batteries 2, each group of batteries 2 between each box 1 is connected in series or parallel again.

[0032] As Figure 1 shown, the top of the battery module of the uppermost layer of stacked energy storage battery stack is provided with protective cover 3, can prevent dust, to prevent battery 2 short circuit, and ensure that upper battery module has certain air pressure.The bottom of stacked energy storage battery stack is provided with bottom support, and the box 1 of battery module is matched and aligned with convex and concave, and the fork transport, hoisting structure is opened in bottom, to facilitate handling or hoisting.

[0033] As Figure 3 , Figure 8 And Figure 10 shown, one of the side openings of box 1 is provided, and detachable front end panel 4 is provided, and front end panel 4 is connected and fixed with box 1 by bolt.Pull plate 11 is arranged at the bottom surface of the inner cavity of box 1, and pull plate 11 is designed as grid, and pull plate 11 has a plurality of placement positions for placing battery 2, and clamping groove 14 is arranged between placement position, and baffle 15 is arranged in clamping groove 14, to separate and fix battery 2, and also play the role of bottom reinforcing rib. Figure 8 And Figure 10 As shown in the grid formed by baffle 15, each grid can be designed to surround two placement positions as Figure 8 ,

[0034] When the battery 2 needs to be repaired, the front end panel 4 can be removed, the pull plate 11 can be pulled out from the opening on the side of the box body 1, after the battery 2 is repaired, the pull plate 11 is put back into the inner cavity of the box body 1 through the opening on the side of the box body 1, and the front end panel 4 is installed, which is very convenient.

[0035] As shown in Figure 3 The box body 1 is provided with a plurality of pressing strips 16 in the length direction at intervals on the top, and the top end of the side wall of the box body 1 in the short direction is provided with a connecting hole corresponding to the pressing strip 16, and the two ends of the pressing strip 16 are fixed by bolts through the corresponding connecting holes. The pressing strip 16 can prevent the battery 2 from vibrating during transportation and can also prevent the positive and negative poles of the battery 2 from short-circuiting. Each pressing strip 16 can be arranged between two rows of batteries 2 and press the two rows of batteries 2 at the same time; or each pressing strip 16 can be arranged on a single row of batteries 2 and press only one row of batteries 2. The structure of the pressing strip 16 can be designed as a flat surface of the pressing strip 16; or the structure of the pressing strip 16 can be designed to match the concave-convex structure of the surface of the battery 2, so that the area of contact between the pressing strip 16 and the battery 2 is larger when the pressing strip 16 presses the battery 2, and the battery 2 is more stable.

[0036] One end of one short side of the pull plate 11 is provided with a total positive copper bar 12 and a total negative copper bar 13. The total positive copper bar 12 and the total negative copper bar 13 are integrally embedded in one end of the pull plate 11, which is convenient for installation and reduces the assembly process. The total positive copper bar 12 has a positive pole connecting hole 121 at the top or near one side of the placement position, and has a positive pole output terminal hole 122 on the side away from the placement position; the total negative copper bar 13 has a negative pole connecting hole 131 at the top or near one side of the placement position, and has a negative pole output terminal hole 132 on the side away from the placement position. The positive poles of the batteries 2 are connected to the positive pole connecting hole 121 through positive pole connecting wires 123, and the negative poles of the batteries 2 are connected to the negative pole connecting hole 131 through negative pole connecting wires 133. The connecting wires of the batteries 2 arranged in the box body 1 are wire harnesses, and the length of the wire harnesses is uniformly arranged according to the order of the batteries 2, which is convenient for overall appearance, and the flexible wire connection avoids vibration during transportation, plays a buffering role, and can be flexibly bent for convenient arrangement.

[0037] Specifically, as shown in Figure 6 and Figure 11 The positive poles or negative poles of each row of batteries 2 can be connected to the corresponding copper nose through the connecting wires respectively, and then the copper noses connected to the positive poles are connected to the positive pole connecting hole 121 through the connecting wires, and the copper noses connected to the negative poles are connected to the negative pole connecting hole 131 through the connecting wires.

[0038] The bottom plate of the box body 1 is provided with a hole slot near the total positive copper bar 12, and the positive pole output terminal hole 122 of the total positive copper bar 12 of the battery module located on the upper layer and the negative pole output terminal hole 132 of the total negative copper bar 13 located on the lower layer are connected through a wire or a conductive sheet passing through the hole slot, realizing the series connection of the upper and lower layers of batteries, as shown in Figure 2As shown in the figure, the scheme shown is connected using a conductive sheet.

[0039] As shown in the figure, Figure 8 As shown in the figure, the box 1 is provided with an upper and lower through ventilation pipe section 17 on at least two sides, respectively, and the side of the ventilation pipe section 17 facing the inner cavity of the box 1 is provided with a ventilation hole 171. As shown in the figure, Figure 1 As shown in the figure, the ventilation pipe sections 17 of each layer are nested between the upper and lower layers, and when the plurality of battery modules are stacked together, the ventilation pipe sections 17 at the corresponding positions are in communication with each other, forming a ventilation pipe; wherein at least one ventilation pipe is used for air intake, and at least one ventilation pipe is used for air outlet, and the top of the ventilation pipe for air intake is circumscribed by an air conditioning ventilation pipe.

[0040] As shown in the figure, Figure 8 As shown in the figure, the bottom part of the placement position is hollowed out, so that the wind input by the ventilation pipe can be effectively circulated, realizing the functions of cooling and heating.

[0041] The side walls of the two long edges of the box 1 are provided with vertically extending thickened areas 18 on the side facing the inner cavity, and at least part of the top of the thickened area 18 extends upward to form a protruding part 181 protruding from the side of the box 1, and correspondingly, the bottom of the box 1 is provided with a recessed part 182, so that when the upper and lower adjacent battery modules are stacked, the recessed part 182 of the box 1 on the upper side is matched with the protruding part 181 of the box 1 on the lower side. In addition, the part of the side wall of the box 1 that is not thickened can provide more space for the circulation of heated or cooled air.

[0042] The thickened area 18 is provided with a mounting hole 183 for the installation of a threaded rod between the upper and lower adjacent battery modules, which can be used to tighten the upper and lower boxes 1, facilitating subsequent handling. The nut matched with the threaded rod can be embedded in the thickened area 18 or installed outside the thickened area 18; if the nut is installed outside the thickened area 18, a mounting position should be reserved between the thickened areas 18 of the upper and lower adjacent battery modules.

Claims

1. A stacked energy storage cell stack, characterized by, The application relates to a stacked energy storage battery stack. At least two sides of the box are respectively provided with upper and lower ventilation pipe sections penetrating through the box, one side of the ventilation pipe section is provided with a ventilation hole, and the ventilation pipe sections at corresponding positions are connected to form a ventilation pipe when the battery modules are stacked.

2. The stacked energy storage cell stack of claim 1, wherein, One side of the box is provided with a detachable front end panel. The bottom surface of the inner cavity of the box is provided with a pull plate, the pull plate is provided with a plurality of placement positions for placing the batteries, the placement positions are provided with clamping grooves, and the clamping grooves are provided with baffles for separating and fixing the batteries. When in use, the pull plate can be placed into or taken out of the inner cavity of the box through the opening on the side of the box.

3. The stacked energy storage cell stack of claim 2, wherein, One end of one short side of the pull plate is provided with a total positive copper bar and a total negative copper bar. The total positive copper bar is provided with a positive connection hole on the top or one side close to the placement position, and the total positive copper bar is provided with a positive output terminal hole on the side far away from the placement position. The total negative copper bar is provided with a negative connection hole on the top or one side close to the placement position, and the total negative copper bar is provided with a negative output terminal hole on the side far away from the placement position. The positive poles of the batteries in each battery module are connected to the positive connection hole through a positive connection wire, and the negative poles of the batteries are connected to the negative connection hole through a negative connection wire. The bottom surface of the box is provided with a hole groove close to the total positive copper bar, and the positive output terminal hole of the total positive copper bar of the battery module located on the upper layer and the negative output terminal hole of the total negative copper bar of the battery module located on the lower layer are connected in series through a wire or a conductive sheet penetrating through the hole groove.

4. The stacked energy storage cell stack of claim 2, wherein, The bottom part of the placement position is hollowed out.

5. The stacked energy storage cell stack of claim 2, wherein, The front end panel is connected and fixed to the side of the box through bolts.

6. The stacked energy storage cell stack of claim 1 wherein, The top of the box is provided with a plurality of pressing strips in the long side direction, the top end of the side wall of the box in the short side direction is provided with a connecting hole corresponding to the pressing strip, and the two ends of the pressing strip are respectively connected and fixed to the corresponding connecting holes through bolts.

7. The stacked energy storage cell stack of claim 1 wherein, The side walls of the two long sides of the box are provided with vertically extending thickened areas on the side facing the inner cavity, at least part of the thickened areas is provided with a protruding part protruding from the side of the box, and correspondingly, the bottom of the box is provided with a recess. When the upper and lower two adjacent battery modules are stacked, the recess of the box located on the upper layer is matched with the protruding part of the box located on the lower layer.

8. The stacked energy storage cell stack of claim 7, wherein, The thickened area is provided with a mounting hole for mounting the two adjacent battery modules in the upper and lower layers through a threaded rod.

9. The stacked energy storage cell stack of claim 1 wherein, The top of the battery module on the uppermost layer of the stacked energy storage battery stack is provided with a protective cover.

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