Energy storage battery housing, energy storage battery, and energy storage system

Abstract

This invention relates to the field of electronic product technology and discloses a casing for an energy storage battery, an energy storage battery, and an energy storage system. The casing includes: a groove formed by an indentation in the side wall of a portion of the casing; a communication wiring slot on the inner wall of the groove for connecting to a battery management system housed within the casing; the groove provides handheld space and accommodates a communication terminal plugged into the communication wiring slot; a button for connecting to the battery management system within the casing is also provided on the inner wall of the groove. The button and the communication wiring slot are located on the vertical inner wall of the groove, and the distance between the button and the entrance of the groove is less than the distance between the communication wiring slot and the entrance of the groove. This solution effectively reduces the space occupied by the energy storage battery, provides waterproofing for the communication wiring slot and the communication terminal plugged into it, and facilitates the handling of the energy storage battery.

Description

[0001] This application is a divisional application of patent application filed on June 11, 2021, with application number 202110656050.5 and invention title "Casing of Energy Storage Battery, Energy Storage Battery and Energy Storage System". Technical Field

[0002] The present invention relates to the field of electronic product technology, and in particular to a casing, energy storage battery, and energy storage system for an energy storage battery. Background Technology

[0003] Currently, most energy storage battery products use assembled, prefabricated waterproof handles. During production and assembly, these handles need to be fixed to the battery casing. The waterproofing method typically involves a waterproof rubber ring at the edge. This type of handle is cumbersome to assemble, has poor waterproofing performance, and protrudes beyond the casing, occupying space. To minimize the impact on the internal space of the installed product, these handles are usually designed with an upward-sloping gripping area. However, this can easily cut hands and results in uneven force distribution, leading to a uncomfortable grip.

[0004] In addition, existing energy storage battery products typically place the switch directly on the surface of the casing, making it easy for users to accidentally touch it and cause the battery to shut down abnormally. Furthermore, the plug-and-play waterproof communication terminals of existing energy storage battery products are mostly placed on the product surface, which causes inconvenience for handling and transportation and affects the product's installation dimensions. Summary of the Invention

[0005] The purpose of this invention is to provide a casing for an energy storage battery, an energy storage battery, and an energy storage system, which can effectively reduce the space occupied by the energy storage battery, provide waterproofing for the communication wiring slot and the communication wiring terminals plugged into it, and facilitate the handling of the energy storage battery.

[0006] To address the aforementioned technical problems, embodiments of the present invention provide a housing for an energy storage battery, comprising: a groove formed by the recess of a portion of the housing's sidewall; a communication wiring slot provided on the inner wall of the groove for connecting to a battery management system disposed within the housing; the groove providing handheld space and accommodating a communication terminal plugged into the communication wiring slot.

[0007] Compared to existing technologies, the present invention provides a handheld space for the energy storage battery by using a recessed groove formed by the side wall of the outer casing. This eliminates the need to fix a pre-made handle to the battery casing, and the groove is seamlessly integrated with the battery casing side wall, saving the space occupied by the pre-made handle and improving the waterproofing of the groove edges. The inner wall of the groove is provided with a communication wiring slot for connecting to the internal components of the energy storage battery. The groove space accommodates the communication wiring slot and the communication terminals inserted into it, effectively preventing the communication terminals from protruding outside the battery casing and thus avoiding additional space occupied by the communication terminals. Simultaneously, the groove structure provides waterproofing for the communication wiring slot and terminals.

[0008] In addition, a waterproof sleeve is fitted onto the communication terminal. When the communication terminal is inserted into the communication wiring slot, the waterproof sleeve is accommodated within the groove. By concealing the waterproof sleeve inside the groove, the space occupied by the waterproof sleeve on the external surface of the energy storage battery is reduced, while simultaneously providing waterproofing.

[0009] Additionally, a button for connecting to the battery management system inside the housing is provided on the inner wall of the groove. The button and the communication wiring slot are located on the vertical inner wall of the groove, and the distance between the button and the entrance of the groove is less than the distance between the communication wiring slot and the entrance of the groove. This arrangement facilitates manual operation of the button.

[0010] Additionally, the distance between the button and the upper inner wall of the groove is less than or greater than the distance between the communication wiring slot and the upper inner wall of the groove. By offsetting the button and the communication wiring slot vertically in a horizontal position, the overall space occupied by them on the inner wall of the groove is reduced.

[0011] In addition, the outer casing of the energy storage battery also includes a wiring channel, which is formed by a recess in part of the side wall of the outer casing and extends vertically. A through hole is provided on the inner side wall of the wiring channel, and the through hole extends into a groove located on the same side of the outer casing side wall as the wiring channel. The wiring channel is used to accommodate the leads of the communication terminal. By providing the wiring channel, the leads of the communication terminal that is plugged into the communication terminal can be easily accommodated, facilitating wiring.

[0012] In addition, the outer casing of the energy storage battery also includes a cover plate; the cover plate is placed over the wiring channel to shield the internal space of the wiring channel. The cover plate can provide some protection to the components in the wiring channel.

[0013] Additionally, the wiring channel is located at the rear end of opposite side walls of the housing, and the recess is located at the front of the wiring channel. This design allows the leads of the communication terminals located in the recess to naturally enter the rear wiring channel, thus making the wiring of the communication terminals invisible from the front of the energy storage battery.

[0014] In addition, the wiring groove and the recess on the same side of the outer casing have the same depth.

[0015] Additionally, the button located in the groove on one side wall of the housing is the start / stop button for the energy storage battery, and the button located in the groove on the other side wall of the housing is the reset button for the energy storage battery. By placing the start / stop and reset buttons in the grooves, the buttons can be waterproofed.

[0016] In addition, the upper inner wall of the groove is provided with a sheet metal layer structure with an air layer, which gives the hand contact position a certain structural support characteristic, so that the force is evenly distributed when holding the hand and the feel is comfortable.

[0017] In addition, each of the wiring channels is provided with a power wiring slot that connects to the battery cell located inside the housing. The power wiring slot is used to mate with a power terminal so that the power terminal is accommodated in the wiring channel. The wiring channels, which accommodate the power wiring slot and the power terminal, form a wiring channel for the power wiring.

[0018] In addition, each wiring groove is provided with two power connection slots, and the two power connection slots in the wiring groove located on one side wall of the housing are both positive connection slots, while the two power connection slots in the wiring groove located on the other side wall of the housing are both negative connection slots. At least one of the upper and lower surfaces of the housing forms a locking structure for connecting with the housings of other adjacent energy storage batteries, or the upper and lower surfaces of the housing are both planes. By providing two power connection slots of the same polarity on the same side of the housing, parallel connection of energy storage batteries can be easily achieved. At the same time, by adding a locking structure that limits the upper and lower surfaces of the housing to be both planes or to form a stable connection with its energy storage batteries, the stacked structure formed when multiple energy storage batteries are stacked in a straight direction is more stable.

[0019] An embodiment of the present invention provides an energy storage battery having a housing as described above, wherein a battery management system and a battery cell are disposed within the housing; the groove is located in the gap between the battery management system and the battery cell; and the upper inner wall of the groove is parallel to the horizontal plane.

[0020] In addition, the depth, width and height of the groove are 58mm, 100mm and 55mm respectively, to provide a more comfortable handheld space.

[0021] An embodiment of the present invention provides an energy storage system, comprising: a plurality of energy storage batteries as described above; the plurality of energy storage batteries are arranged vertically, and the wiring channels of the plurality of energy storage batteries are interconnected. This energy storage system can save overall layout space.

[0022] In addition, the two positive terminal slots of each energy storage battery are respectively connected to the positive terminal slots of the energy storage batteries above and below it through power terminals; the two negative terminal slots of each energy storage battery are respectively connected to the negative terminal slots of the energy storage batteries above and below it through power terminals, thereby realizing the parallel connection of multiple energy storage batteries. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 This is a schematic diagram of the casing of the energy storage battery according to the first embodiment;

[0025] Figure 2 This is a schematic diagram of the casing of the energy storage battery according to the first embodiment;

[0026] Figure 3 This is a schematic diagram of the casing of the energy storage battery according to the first embodiment;

[0027] Figure 4 This is a schematic diagram of the casing of the energy storage battery according to the first embodiment;

[0028] Figure 5 This is a schematic diagram of an energy storage battery according to the first embodiment;

[0029] Figure 6 This is a schematic diagram of an energy storage battery according to the first embodiment;

[0030] Figure 7 This is a schematic diagram of an energy storage battery according to the second embodiment;

[0031] Figure 8 This is a schematic diagram of an energy storage system according to the third embodiment;

[0032] Figure 9 This is a schematic diagram of an energy storage system according to the third embodiment. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of the present invention to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0034] The first embodiment of the present invention relates to a casing for an energy storage battery, such as... Figures 1-4 As shown, the outer casing of the energy storage battery 1 includes: a groove 2 formed by the recess of the side wall of the outer casing; a communication wiring slot 4 is provided on the inner wall of the groove 2 for connecting to a battery management system (not shown) placed inside the outer casing; the groove 2 provides handheld space and accommodates a communication wiring terminal 5 plugged into the communication wiring slot 4.

[0035] Compared to existing technologies, the embodiments of this invention provide a handheld space for the energy storage battery through a recessed groove formed by the side wall of the outer casing. This eliminates the need to fix a pre-made handle to the battery casing, and the groove is seamlessly integrated with the side wall of the battery casing, saving the space occupied by the pre-made handle and improving the waterproofing of the groove edges. A communication wiring slot for connecting to internal components of the energy storage battery is provided on the inner wall of the groove. The groove space accommodates the communication wiring slot and the communication terminals inserted into it, effectively preventing the communication terminals from protruding outside the battery casing and thus avoiding additional space occupied by the communication terminals. Simultaneously, the groove structure provides waterproofing for the communication wiring slot and terminals.

[0036] The following is a detailed description of the installation structure implementation details of this embodiment. The following content is only for the convenience of understanding and is not necessary for implementing this solution.

[0037] like Figures 1 to 4 As shown, in this embodiment, the outer casing of the energy storage battery 1 can specifically be the outer casings on both sides of the energy storage battery 1. The groove 2 is preferably located slightly above the outer casings on both sides for easy hand-held handling. The hand-held space of the groove 2 can be a space extending in a horizontal or obliquely upward direction, extending into the inner side wall of the outer casing. The specific structure, quantity, function, and position of the communication wiring slot 4 provided in the groove 2 are not limited. For example, the communication wiring slot 4 can be a network cable RJ45 connector port, COM serial port, or other wiring slots used for communication.

[0038] In one example, such as Figure 3 or Figure 4As shown, a waterproof sleeve (not shown) is fitted onto the communication terminal 5. When the communication terminal 5 is inserted into the communication wiring slot 4, the waterproof sleeve is accommodated within the groove 2. By hiding the waterproof sleeve inside the groove 2, the waterproof sleeve is prevented from protruding outside the casing of the energy storage battery 1, reducing the space occupied by the waterproof sleeve on the external surface of the energy storage battery. At the same time, the groove 2 also provides waterproof protection for the waterproof sleeve.

[0039] In one example, such as Figure 1 or Figure 2 As shown, a button 3 for connecting to the battery management system inside the casing is also provided on the inner wall of the groove 2. The button 3 and the communication wiring slot 4 are located on the vertical inner wall of the groove 2, and the distance between the button 3 and the entrance of the groove 2 is less than the distance between the communication wiring slot 4 and the entrance of the groove 2. The specific structure, number, function, and position of the button 3 on the inner wall of the groove 2 are not limited. For example, the button 3 can be the start / stop button or reset button for the energy storage battery 1.

[0040] Specifically, by placing the button 3 and the communication wiring slot 4 on the vertical inner wall of the groove 2, the pressing direction of the button 3 and the extension direction of the communication wiring terminal 5 inserted into the communication wiring slot 4 are both horizontal, thus freeing up the upper inner wall and the surrounding space, making it convenient for hand-held handling within the groove 2. The freed-upper inner wall can serve as a contact surface for hand-held handling of the energy storage battery 1, while also preventing accidental activation of the button when it is located on the upper inner wall. The freed-up lower inner wall effectively prevents accidental activation of the button 3 located on the lower inner wall when hand-held handling of the energy storage battery 1, thus avoiding disruption to handling; it also prevents poor waterproofing of components located on the lower inner wall due to water accumulation. The distance between button 3 and the entrance of groove 2 is set to be less than the distance between communication wiring groove 4 and the entrance of groove 2. That is, button 3 is closer to the entrance of groove 2 than communication wiring groove 4. This avoids the wiring groove 4 blocking the hand in the horizontal direction when the button 3 is operated by reaching into the groove 2, making operation more convenient.

[0041] In one example, such as Figure 1 or Figure 2As shown, the distance between button 3 and the upper inner wall of groove 2 is less than or greater than the distance between communication wiring groove 4 and the upper inner wall of groove 2 (the case of "greater than" is not shown in the figure). That is, button 3 and communication wiring groove 4 are vertically offset (not on the same horizontal plane). Since the handheld space of groove 2 is limited by the volume and layout of the internal components of energy storage battery 1, especially since the horizontal distance of the vertical sidewall of groove 2 along the inward direction is small, setting button 3 and communication wiring groove 4 vertically offset can avoid them being arranged side by side and occupying more space along the inward direction of the groove, thereby reducing the handheld space of groove 2 from occupying the internal space of energy storage battery 1.

[0042] like Figures 1-4 As shown in the figure, in this embodiment, the outer casing also includes a wiring groove 6, which is formed by a recess in part of the side wall of the outer casing and extends vertically. A through hole (not shown) is provided on the inner side wall of the wiring groove 6, which extends into a groove 2 located on the same side side wall of the outer casing as the wiring groove 6. The wiring groove 6 is used to accommodate the lead wire of the communication terminal 5. By providing the wiring groove, the lead wire of the communication terminal that is plugged into the communication terminal slot can be conveniently accommodated, which facilitates wiring.

[0043] Specifically, a vertically extending wiring groove 6 is provided on the side wall of the outer casing where the groove 2 is located in the energy storage battery 1. The groove 2 and the wiring groove 6 are interconnected through a through hole (not shown) provided on the inner side wall of the wiring groove 6. The lead wire of the communication terminal 5, which is inserted into the communication wiring groove 4, can pass through the through hole into the wiring groove 6, thereby providing a wiring channel for the lead wire.

[0044] In one example, such as Figure 3 , Figure 4 , Figure 5 As shown, the outer casing of the aforementioned energy storage battery 1 also includes a cover plate 8; the cover plate 8 is installed over the wiring channel 6 to shield the internal space of the wiring channel 6. The cover plate 8 can provide some degree of protection for the components in the wiring channel 6. The specific structural form of the cover plate 8 can be integrated with the outer casing structure of the energy storage battery 1.

[0045] In one example, such as Figures 3-4 As shown, the above-mentioned wiring groove 6 is located at the rear end of the opposite side walls of the outer casing, and the groove 2 is located in front of the wiring groove 6.

[0046] Specifically, when the communication wiring slot 4 is located on the front inner wall of the groove 2, the lead wire of the communication terminal 5, which is inserted into the communication wiring slot 4, naturally extends to the rear inner wall and passes through the through hole into the wiring groove 6, thus forming a wiring channel for the communication terminal 5. Since the wiring groove 6 is formed by the recess of the outer casing side wall, the lead wire of the communication terminal 5 will not protrude from the outer casing side wall of the energy storage battery 1, reducing the space occupied by the lead wire of the communication terminal 5 on the external space of the energy storage battery 1. Furthermore, since the wiring groove 6 is located at the rear end of the outer casing side wall, the wiring of the communication terminal 5 will not be visible when viewed from the front (front side) of the energy storage battery, thus effectively hiding the lead wire of the communication terminal 5.

[0047] In one example, the wiring groove 6 on the same side wall of the housing has the same depth as the recess 2, facilitating wiring. In another example, such as... Figure 1 and Figure 2 As shown, the button 3 located in the groove 2 on one side wall of the casing is the start / stop button for the energy storage battery, and the button 3 located in the groove 2 on the other side wall of the casing is the reset button for the energy storage battery. Distributing multiple buttons 3 evenly in the two grooves 2 can reduce the space occupied in the grooves. Of course, if there is enough hand space in the grooves 2, multiple buttons 3 can also be distributed in the same groove 2.

[0048] In one example (not shown), a sheet metal layer structure with an air gap is provided on the upper inner wall of the groove 2. Specifically, a double sheet metal structure is made at a 10mm high position at the top of the groove 2, with an air gap between the two sheet metal structures. This gives the hand-held contact point a certain structural support characteristic, resulting in even force distribution and a comfortable feel when held.

[0049] In one example, such as Figure 1 , Figure 2 As shown, each wiring trough 6 is also provided with a power wiring slot 7 that connects to the battery unit placed inside the housing. The power wiring slot 7 is used to mate with the power wiring terminal so that the power wiring terminal is accommodated in the wiring trough 6.

[0050] The number of power connection slots 7 provided in each wiring trough 6 is unlimited. By using the wiring trough 6 to accommodate the power connection slots 7 and power connection terminals, a wiring channel for power connections is formed, which can reduce the space occupied by the energy storage battery 1.

[0051] In one example, such as Figure 1 , Figure 2As shown, each wiring groove 6 is provided with two power connection slots 7, and the two power connection slots 7 in the wiring groove 6 located on one side wall of the outer casing are both positive connection slots, while the two power connection slots 7 in the wiring groove 6 located on the other side wall of the outer casing are both negative connection slots. At least one of the upper and lower surfaces of the outer casing forms a mating locking structure (not shown) for connecting with the outer casing of other adjacent energy storage batteries 1, or the upper and lower surfaces of the outer casing are both planes. By providing two power connection slots 7 of the same polarity on the same side of the outer casing, parallel connection of energy storage batteries can be easily realized. At the same time, by adding a mating locking structure for stable connection with its energy storage batteries, the stacked structure formed when multiple energy storage batteries are stacked in the vertical direction is more stable.

[0052] In this embodiment, the specific form of the locking structure is not limited. For example, the locking structure can be a shape matching structure, such as a matching groove and a protrusion.

[0053] Furthermore, in practical applications, the outer shell structure consisting of the groove 2 and the communication wiring groove 4 provided in this embodiment of the invention can be used in combination with a traditional handle structure, and both can be mounted on the side wall of the energy storage battery's outer shell. For example... Figure 6 As shown, the outer casing mechanism (S1) in this embodiment and the conventional handle structure (S2) can be disposed on the same side wall of the energy storage battery. When transporting the energy storage battery, the conventional handle structure can be used as the main handhold, while the groove 2 in this embodiment serves as an auxiliary handhold to assist in the transport process. Two communication wiring slots 4 are provided in the groove 2 for connecting communication terminals.

[0054] The second embodiment of the present invention relates to an energy storage battery, such as Figure 7 As shown, the energy storage battery 1 has a housing as described in any of the above embodiments, and the housing is provided with a battery management system 11 and a battery unit 12; the groove 2 is located in the gap between the battery management system 11 and the battery unit 12; the upper inner wall of the groove 2 is parallel to the horizontal plane.

[0055] Specifically, the Battery Management System (BMS) 11 and the battery cells 12 are located on the upper and lower sides of the energy storage battery, respectively. Since the BMS 11 is narrower than the battery cells 12 in the lateral direction, when the BMS 11 and battery cells 12 are facing each other, there will be gaps on both sides of the BMS 11 directly opposite the battery cells 12. In this example, grooves 2 are recessed into the handheld space of the energy storage battery 1, utilizing the gaps slightly above the sides of the energy storage battery 1 to fully utilize its internal space and reduce its overall volume. Based on these gaps, the upper inner wall of the groove 2 can extend fully into the energy storage battery 1 in the horizontal direction, making it parallel to the horizontal plane. This ensures even horizontal force distribution during handheld operation, providing comfort and preventing hand injuries.

[0056] like Figure 2 As shown, in this embodiment, the groove provides a gripping space with a depth * width * height of 58mm * 100mm * 55mm. Wherein, the depth (L) is the horizontal distance of the groove 2 recessed into the energy storage battery 1, the width (W) is the opening distance of the groove 2 in the front-to-back direction of the energy storage battery 1, and the height (H) is the opening distance of the groove 2 in the vertical direction of the energy storage battery 1. Existing combinations of communication terminal blocks and waterproof sleeves generally exceed 70mm in length. This invention overcomes the limitations of the limited internal space of existing energy storage batteries in terms of recessed handheld space. It makes full use of the gap between BMS11 and battery unit 12, with a design height of 55mm and a depth of 58mm. This size fully considers the actual size and arrangement of BMS11 and battery unit 12 inside the energy storage battery, making full use of the remaining space outside BMS11 and battery unit 12 inside the energy storage battery, and achieving the limit of maximizing the design of the groove 2. On the one hand, it does not affect the normal operation and heat dissipation of BMS11 and battery unit 12. On the other hand, as a handheld space for designing the groove 2, the upper inner wall of the groove 2 is set as a horizontal force-bearing surface with a maximum depth of 58mm, thereby solving the problems of waterproofing, sturdiness, cutting hands, and space occupation in the handheld space.

[0057] The third embodiment of the present invention relates to an energy storage system, such as Figure 8 , Figure 9 As shown, it includes: a plurality of energy storage batteries 1 as shown in the third embodiment; the plurality of energy storage batteries 1 are arranged in a vertical direction, and the wiring channels 6 of the plurality of energy storage batteries 1 are connected.

[0058] In one example, the two positive terminal slots of each energy storage battery 1 are respectively connected to the positive terminal slots of the adjacent energy storage batteries above and below it via power terminals (e.g., Figure 8The connection status of the power wiring slots on one side wall of the outer casing is shown; the two negative terminal slots of each energy storage battery are respectively connected to the negative terminal slots of the adjacent energy storage batteries above and below it through power terminals (e.g., Figure 9 The power wiring groove on one side of the outer casing (shown) is used to store energy batteries, so as to realize the parallel connection of multiple energy storage batteries 1.

[0059] Specifically, when multiple energy storage batteries 1 are used in parallel, the positive and negative power terminals are separated on both sides of the energy storage battery 1, which serves as a safety precaution and prevents the problem of bulky wiring harnesses with multiple wires. The positive and negative power terminals are designed with an upper and lower structure, with the upper terminal connected upwards and the lower terminal connected downwards, avoiding interference between the terminal wiring.

[0060] Compared to existing technologies, the present invention provides a handheld space for the energy storage battery by using a recessed groove formed by the side wall of the outer casing. This eliminates the need to fix a pre-made handle to the battery casing, and the groove is seamlessly integrated with the side wall of the battery casing, saving the space occupied by the pre-made handle and improving the waterproofing of the groove edges. A communication wiring slot for connecting to the internal components of the energy storage battery is provided on the inner wall of the groove. The groove space accommodates the communication wiring slot and the communication terminals inserted into it, effectively preventing the communication terminals from protruding outside the battery casing and thus avoiding additional space occupied by the communication terminals. Simultaneously, the groove structure provides waterproofing for the communication wiring slot and terminals.

[0061] Based on this, the wiring channels 6 on both sides are vertically connected at the rear end. When multiple energy storage batteries 1 are stacked and connected in parallel, the wiring channels 6 on both sides can be connected and can be used to provide wiring for the power terminals connecting the positive and negative terminals, which greatly facilitates the parallel connection and arrangement of each energy storage battery 1. After connecting the two sides of each energy storage battery with the power terminals, the interconnection of each energy storage battery is firm and inseparable, and the installation stability is better. After connection, the overall structure will not occupy any extra space except for the energy storage batteries themselves, which is of great significance for the overall compact layout design of the energy storage system.

[0062] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. An energy storage battery housing, characterized by, include: A groove is formed by the indentation of the side wall of the outer casing; a communication wiring groove is provided on the inner wall of the groove for connecting to the battery management system placed inside the outer casing; The groove provides hand space and accommodates communication terminals that are plugged into the communication wiring slot. The inner wall of the groove is also provided with a button for connecting to the battery management system inside the housing. The button and the communication wiring slot are located on the vertical inner wall of the groove, and the distance between the button and the entrance of the groove is less than the distance between the communication wiring slot and the entrance of the groove.

2. The casing of the energy storage battery according to claim 1, characterized in that, It also includes a wiring trough, which is formed by the recess of the side wall of the outer casing and runs vertically through it. The inner side wall of the wiring trough is provided with a through hole, which extends through to the groove on the side wall of the outer casing located on the same side as the wiring trough. The wiring trough is used to accommodate the lead wire of the communication terminal.

3. The casing of the energy storage battery according to claim 2, characterized in that, The wiring channel is located at the rear end of the opposite side walls of the housing, and the groove is located in front of the wiring channel.

4. The casing of the energy storage battery according to claim 3, characterized in that, The button located in the groove on one side wall of the housing is the start / stop button for the energy storage battery, and the button located in the groove on the other side wall of the housing is the reset button for the energy storage battery.

5. The casing of the energy storage battery according to claim 2, characterized in that, The wiring groove located on the same side of the outer casing has the same depth as the recess.

6. An energy storage battery, characterized in that, The energy storage battery has a housing as described in any one of claims 1-5, and the housing contains a battery management system and a battery cell; The groove is located in the gap between the battery management system and the battery cell; the upper inner wall of the groove is parallel to the horizontal plane.

7. The energy storage battery according to claim 6, characterized in that, The depth of the groove width Height is 58mm 100mm 55mm.

8. An energy storage system, characterized in that, include: Multiple energy storage batteries as described in any one of claims 6-7; The multiple energy storage batteries are arranged vertically, and the wiring channels of the multiple energy storage batteries are connected.

9. The energy storage system according to claim 8, characterized in that, The two positive terminal slots of each energy storage battery are respectively connected to the positive terminal slots of the energy storage batteries above and below it via power terminals; the two negative terminal slots of each energy storage battery are respectively connected to the negative terminal slots of the energy storage batteries above and below it via power terminals.

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