Start-stop power supply and power device

Abstract

The utility model provides a start-stop power supply and a power plant, the start-stop power supply of the utility model comprises a housing, a cell assembly arranged in the housing, a BMS assembly electrically connected with the cell assembly, and cell supports fixedly held at two ends of the cell assembly; a protection space is defined by the battery cell brackets, and the battery cell assembly is accommodated in the protection space; and in the stroke of assembling the battery core assembly into the shell, the battery core bracket is always kept on the battery core assembly, so that the battery core assembly is always accommodated in the protection space. According to the start-stop power supply provided by the utility model, the use quality of the start-stop power supply can be improved by optimizing the structure of the start-stop power supply to protect the battery cell.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to a start-stop power supply. The utility model also relates to a power device provided with the start-stop power supply. Background Art

[0002] How to reduce fuel consumption and exhaust emissions of power units has become a hot topic in industry research. Among them, start-stop power supply technology, as an effective energy-saving and emission-reduction solution, is gradually being widely used in the field of power units.

[0003] When the traditional power unit is idling or stopping for a short time, the engine still keeps running, which not only wastes fuel but also produces a lot of exhaust emissions. To solve the above problems, the start-stop power supply technology came into being. This technology automatically shuts down the engine when the power unit stops for a short time, and quickly starts the engine when needed, so as to save fuel and reduce emissions.

[0004] However, as the core component of the start-stop system, the start-stop power supply needs to withstand frequent start and stop operations, which places higher demands on its durability and reliability. Secondly, as the energy source of the start-stop power supply system, the battery cell needs to have good charge and discharge performance and a long service life to cope with frequent charge and discharge operations.

[0005] Therefore, in the current research and development and improvement, lithium-ion soft-pack batteries will be used as energy storage elements for start-stop power supplies. Lithium-ion soft-pack batteries have shown significant advantages in start-stop power supply systems with their high energy density, long cycle life and low self-discharge rate. However, the shell of lithium-ion soft-pack batteries is fragile, and aluminum-plastic film is generally used as the shell. When used, it is easy to deform and break when subjected to external mechanical impact, resulting in damage to the internal structure of the battery, which in turn affects the performance and safety of the battery, and is not conducive to improving the quality of the start-stop power supply. Utility Model Content

[0006] In view of this, the utility model aims to provide a start-stop power supply, so as to improve the use quality of the start-stop power supply by optimizing its own structure to protect the battery cell.

[0007] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0008] A start-stop power supply comprises a housing, a battery cell assembly arranged in the housing, and a BMS component electrically connected to the battery cell assembly, and also comprises a battery cell bracket fixedly held at both ends of the battery cell assembly;

[0009] The battery cell brackets form a protective space, and the battery cell assembly is accommodated in the protective space;

[0010] During the process of assembling the battery cell assembly into the shell, the battery cell support is always kept on the battery cell assembly, so that the battery cell assembly is always accommodated in the protection space.

[0011] Furthermore, the battery cell support includes a receiving portion which is openly arranged to receive the end of the battery cell assembly, and a connecting portion which is fixedly formed between the receiving portions;

[0012] The receiving portion is formed with a receiving groove for accommodating the tab of the battery cell assembly;

[0013] The connecting portion includes a connecting plate fixedly formed between two adjacent receiving portions, and the connecting plates are arranged at intervals along the length direction of the battery cell support.

[0014] Furthermore, the cell holder is provided with a guide member, the guide member is extended outwardly along the cell holder, the inner wall of the shell is provided with a guide groove extending toward the bottom of the shell along the length direction of the shell, and the guide member slides along the guide groove during the process of the cell holder being assembled in the shell;

[0015] And / or, the battery holder is provided with a clamping piece, and at the end of the stroke when the battery holder is assembled in the shell, the clamping piece is clamped on the shell.

[0016] Further, the battery cell assembly is provided with a restraint, the restraint comprising a first restraint belt circumferentially arranged on the battery cell assembly, and a second restraint belt U-shapedly arranged on the battery cell assembly; and / or,

[0017] The gap between the battery core assembly and the shell is filled with foam glue.

[0018] Furthermore, a filling piece is provided between two adjacent battery cells of the battery cell assembly.

[0019] Furthermore, the filling piece includes a first filling piece arranged near the top of the battery cell, and a second filling piece arranged near the bottom of the battery cell.

[0020] Furthermore, the first filling sheet and the second filling sheet are both PU filling sheets.

[0021] Furthermore, polygonal weight-reducing grooves are evenly arranged on the outer surface of the shell.

[0022] Furthermore, the weight-reducing groove is in a diamond shape.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] The start-stop power supply described in the utility model is provided with cell holders capable of being held on the cell assembly at the top and bottom of the cell assembly. When the cell assembly is assembled into a shell, the cell holders can protect the cell assembly in a protective space, so that the cell holders can avoid being hit and squeezed by the shell. After the cell assembly is assembled in the shell, the cell assembly is also protected in the shell by the cell holders, thereby improving the resistance of the cell assembly to mechanical impact.

[0025] The ends of the cells of the cell assembly are respectively received by the receiving parts, which can ensure the lightweight design of the cell holder, and connecting parts are provided between the receiving parts, and the connecting plates are arranged at intervals, which can ensure the structural strength of the cell holder on the basis of lightweight design, and the structure is simple, which is conducive to design implementation.

[0026] The setting of the guide piece allows the battery holder to be more accurately assembled into the corresponding position in the shell, which is conducive to improving the accuracy of the assembly of the battery holder. The setting of the clamping piece allows the battery holder to be clamped on the shell after being assembled into the shell, which is conducive to maintaining the position of the battery holder after being assembled into the battery holder.

[0027] By setting the restraint, the part of the battery cell assembly not received by the bracket is restrained, which can reduce the expansion and deformation of the battery cell assembly during use. The second restraint belt set at the bottom is conducive to restraining the expansion and deformation of the battery cell assembly. The structure is simple and easy to design and implement. By filling the foam glue, the heat generated during the use of the battery cell assembly can be conducted by the foam glue, which is conducive to the heat dissipation of the battery cell assembly. After the foam glue is foamed, the battery cell assembly can be better fixed in the shell and the mechanical impact on the battery cell assembly can be reduced.

[0028] The provision of the filling piece fills the gap between two adjacent battery cells of the battery cell assembly, which can reduce the expansion and deformation of the battery cells during use and facilitate the composition of the battery cell assembly.

[0029] The filling piece is divided into a first filling piece and a second filling piece, which can facilitate the lightweight setting of the start-stop power supply and the design implementation on the basis of ensuring the filling effect.

[0030] The use of PU filling sheets can provide a buffering effect while ensuring the filling effect, and can reduce the mechanical impact on the battery cell.

[0031] The weight-reducing grooves provided on the shell body facilitate the lightweight design of the start-stop power supply while ensuring the structural strength of the shell body. The structure is simple and is conducive to design implementation.

[0032] The diamond-shaped weight-reducing grooves have a good structural support effect and can enhance the shell's ability to resist mechanical impact.

[0033] In addition, the utility model also proposes a power device, in which the start-stop power supply as described above is installed.

[0034] The power device described in the utility model has the same beneficial effects as the start-stop power supply described above relative to the prior art, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0036] Figure 1 It is an exploded diagram of the start-stop power supply described in the embodiment of the utility model;

[0037] Figure 2 This is a schematic diagram of the structure of the start-stop power supply according to an embodiment of the utility model;

[0038] Figure 3 A schematic diagram of the structure of the battery cell assembly according to the embodiment of the utility model, in which the battery cell bracket and the BMS component are assembled;

[0039] Figure 4 This is a schematic diagram of the structure of the upper housing according to an embodiment of the utility model;

[0040] Figure 5 This is a schematic diagram of the structure of the lower housing according to an embodiment of the utility model;

[0041] Figure 6 It is a structural schematic diagram of the battery cell assembly according to an embodiment of the utility model;

[0042] Figure 7 It is a structural schematic diagram of the battery cell assembly according to an embodiment of the utility model from another angle;

[0043] Figure 8 This is a schematic diagram of the structure of the battery support according to an embodiment of the utility model;

[0044] Fig. 9 This is a schematic diagram of the structure of the BMS component described in an embodiment of the utility model;

[0045] Description of reference numerals:

[0046] 1. Shell;

[0047] 101, upper shell; 102, lower shell; 103, limit block; 104, limit groove; 105, connecting ear; 106, guide groove;

[0048] 2. Battery cell assembly;

[0049] 201. Soft pack battery cell;

[0050] 3. BMS components;

[0051] 301, BMS board; 302, FPC board; 303, positive pole; 304, negative pole; 305, sampling harness; 306, communication port;

[0052] 4. Battery cell bracket;

[0053] 401, receiving part; 402, connecting part; 4021, connecting plate; 4022, base plate; 403, guide member; 404, clamping member;

[0054] 5. Breathing valve;

[0055] 6. Restraints;

[0056] 601, first restraint belt; 602, second restraint belt;

[0057] 7. Filling parts;

[0058] 701, a first filling sheet; 702, a second filling sheet;

[0059] s, accommodating cavity; t, protective space; k, weight reduction groove; w, containing groove. DETAILED DESCRIPTION

[0060] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0061] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0062] In addition, the soft-pack battery cell mentioned in the embodiments of the present invention refers to a lithium-ion soft-pack battery cell.

[0063] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0064] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0065] Embodiment 1

[0066] Before describing the start-stop power supply in this embodiment, it is necessary to briefly introduce the concepts involved in the start-stop power supply in this embodiment. The start-stop power supply in this embodiment includes a shell 1, a battery cell assembly 2 arranged in the shell 1, and a BMS component 3 electrically connected to the battery cell assembly 2.

[0067] In terms of overall structure, combined Figures 1 to 3 As shown, the start-stop power supply in this embodiment further includes a cell holder 4 fixedly held at both ends of the cell assembly 2. A protective space t is formed between the cell holders 4, and the cell assembly 2 is accommodated in the protective space t. During the process of assembling the cell assembly 2 into the housing 1, the cell holder 4 is always held on the cell assembly 2, so that the cell assembly 2 is always accommodated in the protective space t.

[0068] As configured above, the start-stop power supply in this embodiment is provided with a cell holder 4 capable of being held on the cell assembly 2 at both the top and the bottom of the cell assembly 2. When the cell assembly 2 is assembled into the shell 1, the cell holder 4 can protect the cell assembly 2 in the protective space t, so that the cell holder 4 can avoid being hit and squeezed by the shell 1. After the cell assembly 2 is assembled in the shell 1, the cell assembly 2 is also protected in the shell 1 by the cell holder 4, thereby improving the resistance of the cell assembly 2 to mechanical impact.

[0069] Combination Figure 1 , Figure 3 and Figure 4 As shown, the housing 1 in this embodiment includes an upper housing 101 and a lower housing 102 , and the upper housing 101 and the lower housing 102 are buckled together to form a receiving chamber s for receiving the battery cell support 4 , the battery cell assembly 2 and the BMS component 3 .

[0070] Specifically, in order to facilitate disassembly and installation, the upper shell 101 in this embodiment is provided with a limit block 103 extending from the bottom surface of the upper shell 101 to the lower shell 102, and a limit groove 104 is formed on the lower shell 102 to cooperate with it. When the upper shell 101 is buckled on the lower shell 102, the limit block 103 is inserted into the limit groove 104. In order to facilitate assembly, the limit block 103 and the limit groove 104 are both set to two, and the two limit blocks 103 and the limit groove 104 are respectively arranged at both ends of the buckling surface of the upper shell 101 and the lower shell 102. After the upper shell 101 and the lower shell 102 are buckled, the upper shell 101 and the lower shell 102 are fixedly connected by bolts uniformly arranged along the circumference of the buckling surface of the upper shell 101 and the lower shell 102.

[0071] A ventilation valve 5 is also provided on the top of the upper shell 101 . The ventilation valve 5 in this embodiment can be any ventilation valve 5 known in the prior art.

[0072] A connecting ear 105 extending outward from the lower shell 102 is also provided on the side surface of the lower shell 102. A through hole is formed on the connecting ear 105. The start-stop power supply is assembled at a preset installation position of the power device by fitting the connecting ear 105 with bolts.

[0073] In order to improve the lightweight design of the housing 1, Figure 1 , Figure 2 and Figure 5 As shown, polygonal weight-reducing grooves k are evenly arranged on the outer surface of the lower shell 102 in this embodiment. By providing the weight-reducing grooves k on the shell 1, while ensuring the structural strength of the shell 1, it is beneficial to the lightweight design of the start-stop power supply, the structure is simple, and it is beneficial to the design implementation.

[0074] Specifically, in order to facilitate processing and manufacturing, the wall thickness of the weight reduction groove k is consistent with the wall thickness of the shell 1. The weight reduction groove k is formed on the outer surface of the lower shell 102 and is recessed from the outer surface of the lower shell 102 to the accommodating cavity s.

[0075] In order to improve the structural strength of the shell 1, the weight-reducing groove k on the shell 1 in this embodiment is in a diamond shape. The diamond-shaped weight-reducing groove k has a good structural support effect and can enhance the ability of the shell 1 to resist mechanical impact.

[0076] In more detail, the weight-reducing grooves k in this embodiment are evenly arranged in a rhombus shape on the outer surface of the shell 1 , and a triangular weight-reducing groove k is formed between two adjacent weight-reducing grooves k near the edge of the shell 1 .

[0077] The battery cell assembly 2 is accommodated in the accommodating cavity s, and includes a plurality of soft-pack battery cells 201 arranged in series. The pole ears of the soft-pack battery cells 201 are folded and welded to achieve a series arrangement. The battery cell assembly 2 has an external positive pole ear and an external negative pole ear connected to an external BMS component 3, and the external positive pole ear and the external negative pole ear are electrically connected to the BMS component 3.

[0078] Generally speaking, the start-stop power supply of the power device has a voltage of 12V, so the voltage of the battery cell assembly 2 in this embodiment after a plurality of battery cells are connected in series is also 12V.

[0079] In order to better constrain the battery cell assembly 2, combined Figure 6 As shown, a restraint 6 is provided on the battery cell assembly 2 in this embodiment, and the restraint 6 includes a first restraint band 601 circumferentially arranged on the battery cell assembly 2, and a second restraint band 602 arranged in a U-shape around the battery cell assembly 2. By setting the restraint 6, the portion of the battery cell assembly 2 not received by the bracket is restrained, which can reduce the expansion and deformation of the battery cell assembly 2 during use. The second restraint band 602 arranged at the bottom is conducive to restraining the expansion and deformation of the battery cell assembly 2. The structure is simple and easy to design and implement.

[0080] Specifically, the first restraint belt 601 is arranged around the middle of the battery cell assembly 2, and the second restraint belt 602 is arranged from one side of the battery cell assembly 2 to the bottom of the battery cell assembly 2, and then from the bottom of the battery cell assembly 2 to the other side of the battery cell assembly 2, forming a U-shape. In this embodiment, the first restraint belt 601 and the second restraint belt 602 can be, for example, self-adhesive foam strips with adhesive on one side, and can also be ordinary tapes or insulating tapes, etc., as long as they can constrain the battery cells.

[0081] In order to better dissipate heat of the battery cell assembly 2, the gap between the battery cell assembly 2 and the shell 1 in this embodiment is filled with foam glue. By filling the foam glue, the heat generated during the use of the battery cell assembly 2 can be conducted by the foam glue, which is beneficial to the heat dissipation of the battery cell assembly 2. After foaming, the foam glue can better fix the battery cell assembly 2 in the shell 1 and can reduce the mechanical impact on the battery cell assembly 2.

[0082] Specifically, after the battery cell assembly 2 in the present embodiment is assembled into the accommodating cavity s, the gap between the battery cell assembly 2 and the inner wall of the accommodating cavity s is filled with foam glue, which can improve the ability of the battery cell assembly 2 to resist mechanical impact on the basis of improving the heat dissipation capacity of the battery cell assembly 2. When the shell 1 is subjected to mechanical impact, the foam glue can buffer part of the mechanical impact, thereby reducing the mechanical impact on the battery cell assembly 2.

[0083] In order to reduce the expansion deformation of the battery cell assembly 2, a filling piece 7 is provided between two adjacent battery cells of the battery cell assembly 2 in this embodiment. The setting of the filling piece 7 fills the gap between the two adjacent battery cells of the battery cell assembly 2, which can reduce the expansion deformation of the battery cells during use and is beneficial to the composition of the battery cell assembly 2.

[0084] In detail, the filler 7 in this embodiment can be fixed between two adjacent battery cells by applying glue on both sides, which is conducive to maintaining the position of the filler 7. Of course, the filler 7 can also be directly sandwiched between the two battery cells, but direct sandwiching is not conducive to maintaining the position of the filler 7, so this design is not adopted in this embodiment.

[0085] In order to realize the lightweight design of the start-stop power supply, the filling piece 7 in the present embodiment includes a first filling piece 701 arranged near the top of the battery cell, and a second filling piece 702 arranged near the bottom of the battery cell. The filling pieces are divided into the first filling piece 701 and the second filling piece 702. On the basis of ensuring the filling effect, it can facilitate the lightweight setting of the start-stop power supply and facilitate the design implementation.

[0086] In order to better cushion the battery cell assembly 2, the first filling sheet 701 and the second filling sheet 702 in this embodiment are both PU filling sheets. The use of PU filling sheets can provide a cushioning effect while ensuring a filling effect, and can reduce the mechanical impact received by the battery cell.

[0087] It can be understood that when the soft-pack battery 201 expands and deforms, due to the setting of the filling piece 7, the expanded side wall of the soft-pack battery 201 will first squeeze the filling sheet. Because the filling sheet is arranged between the soft-pack battery cells 201, the PU filling sheet squeezes the side wall of the soft-pack battery 201 when the soft-pack battery 201 expands, so that the expansion deformation of the soft-pack battery 201 is absorbed, thereby helping to reduce the expansion deformation of the soft-pack battery 201.

[0088] In order to better realize the lightweight design of the start-stop power supply, combined with Figure 1 , Figure 3 and Figure 8 As shown, the battery cell holder 4 includes an open receiving portion 401 for accommodating the end of the battery cell assembly 2, and a connecting portion 402 fixedly formed between the receiving portions 401, a receiving groove w for accommodating the pole ear of the battery cell assembly 2 is formed on the receiving portion 401, and the connecting portion 402 includes a connecting plate 4021 fixedly formed between two adjacent receiving portions 401, and the connecting plates 4021 are arranged at intervals along the length direction of the battery cell holder 4, and the ends of the battery cells of the battery cell assembly 2 are respectively received by the receiving portions 401, which can ensure the lightweight design of the battery cell holder 4, and the connecting portion 402 is provided between the receiving portions 401, and the connecting plates 4021 are arranged at intervals, which can ensure the structural strength of the battery cell holder 4 on the basis of lightweight design, and the structure is simple, which is conducive to design implementation.

[0089] Specifically, the cell holder 4 in this embodiment is divided into two parts, which are respectively arranged at the two ends of the cell assembly 2. The cell holder 4 is provided with corresponding receiving parts 401 corresponding to the number of soft-packed cells 201 of the cell assembly 2. The end of each soft-packed cell 201 is received in the receiving part 401, and the tab of the soft-packed cell 201 is received in the receiving groove w. A connecting part 402 is constructed between two adjacent receiving parts 401, and the connecting part 402 includes a base plate 4022 abutting against the cell assembly 2 and connecting plates 4021 arranged at intervals along the length direction of the cell holder 4.

[0090] In order to more accurately assemble the battery holder 4 into the housing 1, Figure 1 , Figure 5 and Figure 8 As shown, the battery cell holder 4 in this embodiment is provided with a guide member 403, and the guide member 403 is extended outwardly along the battery cell holder 4. A guide groove 106 extending toward the bottom of the shell 1 along the length direction of the shell 1 is provided on the inner wall of the shell 1. During the process of assembling the battery cell holder 4 in the shell 1, the guide member 403 slides along the guide groove 106. Through the setting of the guide member 403, the battery cell holder 4 can be more accurately assembled into the corresponding position in the shell 1, which is conducive to improving the accuracy of assembling the battery cell holder 4.

[0091] In order to better fix the position of the battery cell holder 4 in the shell 1, a clamping piece 404 is provided on the battery cell holder 4 in this embodiment. At the end of the stroke in which the battery cell holder 4 is assembled in the shell 1, the clamping piece 404 is clamped on the shell 1. The setting of the clamping piece 404 enables the battery cell holder 4 to be clamped on the shell 1 after being assembled into the shell 1, which is beneficial to maintaining the position of the battery cell holder 4 after being assembled into the battery cell holder 4.

[0092] Specifically, when the battery cell holder 4 in this embodiment is assembled on the battery cell assembly 2, first, the pole ears of each soft-pack battery cell 201 are passed through the bottom battery cell holder 4, and then the pole ears are welded in series and accommodated in the receiving groove w, and then the pole ears at the top of each soft-pack battery cell 201 are passed through the top battery cell holder 4, and then the pole ears are welded in series and accommodated in the receiving groove w, thereby completing the assembly of the battery cell holder 4 on the battery assembly 2.

[0093] Combination Figure 1 , Figure 2 , Figure 3 and Fig. 9 As shown, the BMS component 3 , namely the battery energy management system component, includes a BMS board 301 , an FPC board 302 , a positive electrode column 303 and a negative electrode column 304 .

[0094] Among them, the FPC board 302 is assembled on the battery cell bracket 4 located on the top of the battery cell assembly 2, and is respectively connected to the external positive electrode ear and the external negative electrode ear of the battery cell assembly 2 through copper busbars. The FPC board 302 is electrically connected to the electrode ears at the bottom of the battery cell assembly 2 through the sampling harness 305.

[0095] The BMS board 301 is assembled on the FPC board 302 and electrically connected to the FPC board 302 . The BMS board 301 is also electrically connected to a communication port 306 , which is arranged on the upper housing 101 .

[0096] The positive electrode column 303 and the negative electrode column 304 are both arranged on the upper shell 101 and electrically connected to corresponding copper bars, and the energy output and input of the battery cell assembly 2 are realized through the positive electrode column 303 and the negative electrode column 304 .

[0097] When assembling the start-stop power supply in this embodiment, first assemble the restraint 6 on the battery cell assembly 2, then assemble the battery cell holder 4 on the battery cell assembly 2, assemble the BMS component 3 on the battery cell holder 4, and configure the corresponding electrical connection relationship, assemble the battery cell holder 4 together with the battery cell assembly 2 into the lower shell 102, when the battery cell holder 4 is at the end of the assembly stroke, the battery cell holder 4 is clamped on the shell 1, and then fill the gap between the battery cell assembly 2 and the shell 1 with foam glue, and assemble the upper shell 101 on the upper shell 101 to complete the assembly.

[0098] In summary, in this embodiment, the protection space t is formed by the battery support 4 to protect the battery assembly 2. The expansion deformation of the battery assembly 2 is reduced by the combination of the restraining member 6, the filling member 7 and the foaming agent. In addition, while ensuring the safety of the battery assembly 2, the lightweight design is taken into account, which is conducive to improving the use quality of the start-stop power supply.

[0099] Embodiment 2

[0100] This embodiment relates to a power device, in which the start-stop power supply in the first embodiment is installed.

[0101] The power device in this embodiment is equipped with the start-stop power supply in Example 1, and the use quality of the start-stop power supply is improved by optimizing the structure of the start-stop power supply. The start-stop power supply adopts lithium-ion soft-pack battery cell 201, which is light in weight and has a long cycle life, which is beneficial to improving the use quality of the power device.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A start-stop power supply, comprising a housing, a battery cell assembly disposed in the housing, and a BMS component electrically connected to the battery cell assembly, characterized in that: Also included are battery cell brackets fixedly held at both ends of the battery cell assembly; The battery cell brackets form a protective space, and the battery cell assembly is accommodated in the protective space; During the process of assembling the battery cell assembly into the shell, the battery cell support is always kept on the battery cell assembly, so that the battery cell assembly is always accommodated in the protection space.

2. The start-stop power supply according to claim 1, characterized in that: The battery cell support comprises a receiving portion which is openly arranged to receive the end of the battery cell assembly, and a connecting portion which is fixedly formed between the receiving portions; The receiving portion is formed with a receiving groove for accommodating the tab of the battery cell assembly; The connecting portion includes a connecting plate fixedly formed between two adjacent receiving portions, and the connecting plates are arranged at intervals along the length direction of the battery cell support.

3. The start-stop power supply according to claim 2, characterized in that: The cell holder is provided with a guide member, the guide member is extended outwardly along the cell holder, the inner wall of the shell is provided with a guide groove extending toward the bottom of the shell along the length direction of the shell, and the guide member slides along the guide groove during the process of the cell holder being assembled in the shell; And / or, the battery holder is provided with a clamping piece, and at the end of the stroke when the battery holder is assembled in the shell, the clamping piece is clamped on the shell.

4. The start-stop power supply according to claim 1, characterized in that: The battery cell assembly is provided with a restraint member, the restraint member comprising a first restraint band circumferentially arranged on the battery cell assembly, and a second restraint band U-shapedly arranged on the battery cell assembly; and / or, The gap between the battery core assembly and the shell is filled with foam glue.

5. The start-stop power supply according to claim 1, characterized in that: A filling piece is arranged between two adjacent battery cells of the battery cell assembly.

6. The start-stop power supply according to claim 5, characterized in that: The filling piece includes a first filling piece arranged near the top of the battery core and a second filling piece arranged near the bottom of the battery core.

7. The start-stop power supply according to claim 6, characterized in that: The first filling sheet and the second filling sheet are both PU filling sheets.

8. The start-stop power supply according to any one of claims 1 to 7, characterized in that: Polygonal weight-reducing grooves are evenly arranged on the outer surface of the shell.

9. The start-stop power supply according to claim 8, characterized in that: The weight-reducing groove is in a rhombus shape.

10. A power device, characterized in that: The power device is equipped with a start-stop power supply according to any one of claims 1 to 9.

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