Power battery pack series connection structure

Abstract

The utility model relates to a power battery pack series connection structure. The power battery pack series connection structure comprises a tray, a plurality of power battery modules and a control box, the plurality of power battery modules are symmetrically arranged, and the plurality of power battery modules are sequentially connected in series; the control box is arranged on the power battery modules, and the control box is respectively connected with each power battery module; the tray comprises a tray body and a tray bracket, and the tray bracket is arranged in the tray body; the tray bracket comprises a plurality of bracket units; the power battery modules are arranged in the support units, and the power battery modules and the support units are arranged in a one-to-one correspondence mode. By means of the structure, the power battery modules can be connected in series after being set in a standardized mode, so that the structure can be matched with batteries of multiple models in the market, good flexibility and variability are achieved, the use requirements of multiple scenes can be met, and cost is also saved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a power battery pack series structure. Background Art

[0002] With the development of science and technology, power batteries as an energy device have attracted more and more attention and have been widely used in mobile phones, electric vehicles, power tools and other fields.

[0003] Traditional power battery pack production lines often feature a flat, integrated structure, requiring the design of multiple different types of power battery packs based on the vehicle's needs. However, the complex design of these multiple power battery packs consumes significant labor costs and also makes subsequent maintenance difficult. If a battery pack develops a problem, disassembly and repair are difficult.

[0004] In addition, the existing integrated power battery structure is not a standardized battery pack, is not universal, cannot be applied in multiple scenarios, and cannot quickly meet customer needs; if a single battery is damaged, it may affect the use of the entire integrated battery pack, and the maintenance cost is high. Utility Model Content

[0005] Based on this, the present invention provides a series-connected power battery pack structure, aiming to address the technical issues of existing power battery packs, such as their lack of versatility, inability to be applied in multiple scenarios, potential impact of a single battery cell problem on the entire pack, and high maintenance costs. The present invention has a simple structure, strong versatility, ease of maintenance and disassembly, and low maintenance costs.

[0006] To achieve the above objectives, the present invention proposes the following technical solutions: a power battery pack series structure, comprising a tray, a plurality of power battery modules, and a control box; the plurality of power battery modules are symmetrically arranged and sequentially connected in series; the control box is arranged on the power battery modules, and the control box is respectively connected to each of the power battery modules;

[0007] The pallet includes a pallet body and a pallet bracket, wherein the pallet bracket is arranged in the pallet body; the pallet bracket includes a plurality of bracket units; the power battery module is arranged in the bracket unit, and the power battery module and the bracket unit are arranged in a one-to-one correspondence.

[0008] As a preferred embodiment, the voltage of each power battery module is 12V to 750V; the battery capacity of each power battery module is 100Ah to 1000Ah.

[0009] As a preferred embodiment, an epoxy plate is provided between two adjacent bracket units; and in the adjacently arranged power battery modules, a gap is provided between each power battery module and the epoxy plate.

[0010] As a preferred embodiment, the plurality of power battery modules are arranged in at least two rows, and the two rows of power battery modules are symmetrically arranged; the control box is arranged at the center of the two rows of power battery modules.

[0011] As a preferred embodiment, the series connection is achieved through connecting pieces; the connecting pieces include a first connecting piece and a second connecting piece;

[0012] In the two rows of power battery modules, the power battery module at one end of one row of power battery modules and the power battery module at one end of the other row of power battery modules are connected in series via the first connecting piece;

[0013] In the same row of the power battery modules, adjacent power battery modules are connected in series via the second connecting piece.

[0014] As a preferred embodiment, the first connecting piece is a strip-shaped connecting piece, and the second connecting piece is an inverted "U"-shaped connecting piece. This facilitates the connection of the battery modules and effectively saves and utilizes space.

[0015] As a preferred embodiment, the control box is connected to an external power source; a BMS is provided in the control box, and the BMS is connected to each of the power battery modules respectively.

[0016] As a preferred embodiment, a voltage sensor, a current sensor and a temperature sensor are provided in the BMS, and the voltage sensor, the current sensor and the temperature sensor are connected to each of the power battery modules respectively.

[0017] As a preferred embodiment, a control unit and a wireless module are further provided in the control box, and the wireless module is connected to the control unit and the cloud platform respectively.

[0018] As a preferred embodiment, the control box is further provided with a relay, a shunt, a fuse, a connector and a resistor.

[0019] As a preferred embodiment, the power battery pack series structure further includes a display, which is connected to the control box; a switch module and an alarm module are provided in the display, and the alarm module is connected to the BMS.

[0020] As a preferred embodiment, limiting brackets are respectively provided on two opposite sides of the lower end of the power battery module, and the power battery module is fixed in the bracket unit through the limiting brackets.

[0021] The beneficial effects achieved by the present invention are as follows: Through the structure of the present application, the power battery modules can be standardized and then connected in series, so that the structure of the present application can match many types of batteries on the market, has good flexibility and variability, can meet the use requirements of multiple scenarios, and also saves costs. Once a module fails or needs to be replaced, only the corresponding module needs to be replaced, without the need to replace the entire battery pack, which not only improves the maintainability and upgradeability of the battery, but also facilitates the recycling and reuse of the battery; it realizes true intelligence and green and low-carbon integration, which is of great significance for promoting the development of renewable energy, reducing emissions and protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of the power battery pack series structure according to an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of a power battery module;

[0025] Figure 3 for Figure 1 A schematic diagram of the structure of a pallet;

[0026] Figure 4 for Figure 1 Schematic diagram of the structure of the second connecting piece.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] Specifically, such as Figures 1 to 3 As shown, the embodiment of the present invention provides a power battery pack series structure, including a tray 10, a plurality of power battery modules 20 and a control box 30; the plurality of power battery modules 20 are symmetrically arranged and connected in series in sequence; the control box 30 is arranged on the power battery module 20, and the control box 30 is respectively connected to each of the power battery modules 20;

[0034] The pallet 10 includes a pallet body 11 and a pallet bracket 12, wherein the pallet bracket 12 is arranged in the pallet body 11; the pallet bracket 12 includes a plurality of bracket units 121; the power battery module 20 is arranged in the bracket unit 121, and the power battery module 20 and the bracket unit 121 are arranged in a one-to-one correspondence.

[0035] The power battery module 20 is symmetrically arranged, the control box is arranged on the power battery module, the power battery module 20 is arranged in the bracket unit 121, and the power battery module 20 and the bracket unit 121 are arranged one by one, which can effectively save space, facilitate the standardized setting of the power battery module, and is easy to maintain and disassemble, and can meet the usage requirements of multiple scenarios.

[0036] In the present structure, the entire tray bracket 12 is secured to the tray body 11 by multiple screws and four bracket fixings 13. These four bracket fixings 13 are symmetrically arranged on either side of the tray body, with two bracket fixings 13 on each side. The bracket fixings 13 further secure the tray bracket and effectively prevent the tray bracket from warping, facilitating the attachment and removal of the power battery module.

[0037] As a preferred embodiment, the voltage of each of the power battery modules 20 is 12V to 750V (depending on actual needs, it can be 12V, or 50V, or 350V, or 750V, etc.); the battery capacity of each of the power battery modules is 100Ah to 1000Ah (depending on actual needs, it can be 100Ah, or 150Ah, or 600Ah, or 1000Ah, etc.). In this way, the battery module of the present application can be standardized so that the structure of the present application can match many types of batteries on the market, has good flexibility and variability, and can meet the use requirements of multiple scenarios. Once a module fails or needs to be replaced, it is only necessary to replace the corresponding module without replacing the entire battery pack, which not only improves the maintainability and upgradeability of the battery, but also facilitates the recycling and reuse of the battery. For example, the voltage of each of the power battery modules can be 12.8V.

[0038] As a preferred embodiment, an epoxy plate 122 is provided between two adjacent bracket units 121. In the adjacent power battery modules 20, a gap is provided between each power battery module 20 and the epoxy plate 122. The epoxy plate 122 ensures insulation isolation between the two adjacent power battery modules 20, ensuring a secure connection.

[0039] As a preferred embodiment, the plurality of power battery modules 20 are arranged in at least two rows, and the two rows of power battery modules 20 are symmetrically arranged; the control box 30 is arranged at the center of the two rows of power battery modules 20.

[0040] As a preferred embodiment, the series connection is achieved through a connecting piece 40; the connecting piece 40 includes a first connecting piece 41 and a second connecting piece 42;

[0041] In the two rows of power battery modules 20, the power battery modules 20 at one end of one row of power battery modules are connected in series with the power battery modules 20 at one end of the other row of power battery modules via the first connecting piece 41;

[0042] In the same row of the power battery modules 20 , adjacent power battery modules 20 are connected in series via the second connecting pieces 42 .

[0043] As a preferred embodiment, Figure 4 As shown, the first connecting piece 41 is a strip-shaped connecting piece, and the second connecting piece 42 is an inverted "U"-shaped connecting piece. This facilitates the connection of each battery module and can effectively save and utilize space.

[0044] As a preferred embodiment, the control box 30 is connected to an external power source (not marked in the figure); a BMS (not marked in the figure) is provided in the control box 30, and the BMS is connected to each of the power battery modules 20 respectively.

[0045] As a preferred embodiment, a voltage sensor, a current sensor, and a temperature sensor are provided in the BMS, and the voltage sensor, the current sensor, and the temperature sensor are connected to each of the power battery modules 20 respectively.

[0046] By connecting an external power source, each battery module can be charged and discharged. The BMS can monitor the status of each power battery module in real time (the BMS can collect and monitor the battery data of the BMU inside each battery module in real time). At the same time, the BMS uploads the monitoring data to the cloud platform management system, facilitating real-time monitoring for users. If a power battery module experiences an abnormality, it can be replaced or repaired individually without having to modify the overall solution, greatly improving work efficiency.

[0047] As a preferred embodiment, the control box 30 is further provided with a control unit (not labeled in the figure) and a wireless module (not labeled in the figure). The wireless module is connected to the control unit and a cloud platform (not labeled in the figure). The wireless module can transmit information to the control unit and upload data to the client in real time via the cloud platform, facilitating remote real-time monitoring of power battery module information.

[0048] As a preferred embodiment, the control box 30 is further provided with a relay, a shunt, a fuse, a connector and a resistor.

[0049] As a preferred embodiment, the series-connected power battery pack structure also includes a display (not labeled in the figure), which is connected to the control box 30; the display is equipped with a switch module and an alarm module, and the alarm module is connected to the BMS. Through the display, real-time data such as battery module temperature, voltage, current, and capacity can be fed back to the user. The switch module can control the on / off of the circuit, used to connect or disconnect circuits between devices; the alarm module is set to alert the user in the form of an alarm if the battery module's charge and discharge voltage and current information exceeds or falls below the set threshold, ensuring device safety.

[0050] As a preferred embodiment, limit brackets 21 are respectively provided on opposite sides of the lower end of the power battery module 20, and the power battery module 20 is fixed in the bracket unit 121 by the limit brackets 21. In the structure of the present application, the limit brackets 21 on opposite sides are symmetrically arranged, with two limit brackets 21 on each side, to facilitate the fixation, maintenance and disassembly of the power battery module.

[0051] Through the structure of this application, the power battery modules can be standardized and then connected in series, so that the structure of this application can match many types of batteries on the market, with good flexibility and variability, can meet the needs of multiple scenarios, and also save costs. Once a module fails or needs to be replaced, only the corresponding module needs to be replaced, without the need to replace the entire battery pack. This not only improves the maintainability and upgradeability of the battery, but also facilitates the recycling and reuse of the battery; it realizes true intelligence and green low-carbon integration, which is of great significance for promoting the development of renewable energy, reducing emissions and protecting the environment.

[0052] Throughout this specification, references to terms such as "one embodiment" and "example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example.

[0053] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A power battery pack series structure, characterized in that: The system comprises a tray, a plurality of power battery modules and a control box; the plurality of power battery modules are symmetrically arranged and connected in series; the control box is arranged on the power battery modules and is connected to each power battery module respectively; The pallet includes a pallet body and a pallet bracket, wherein the pallet bracket is arranged in the pallet body; the pallet bracket includes a plurality of bracket units; the power battery module is arranged in the bracket unit, and the power battery module and the bracket unit are arranged in a one-to-one correspondence.

2. The power battery pack series structure according to claim 1, characterized in that: The voltage of each power battery module is 12V to 750V; the battery capacity of each power battery module is 100Ah to 1000Ah.

3. The power battery pack series structure according to claim 1, characterized in that: An epoxy plate is arranged between two adjacent bracket units; and in the adjacent power battery modules, a gap is provided between each power battery module and the epoxy plate.

4. The power battery pack series structure according to claim 1, characterized in that: The power battery modules are arranged in at least two rows, and the two rows of power battery modules are symmetrically arranged; the control box is arranged at the center of the two rows of power battery modules.

5. The power battery pack series structure according to claim 4, characterized in that: The series connection is achieved through connecting pieces; the connecting pieces include a first connecting piece and a second connecting piece; In the two rows of power battery modules, the power battery module at one end of one row of power battery modules and the power battery module at one end of the other row of power battery modules are connected in series via the first connecting piece; In the same row of the power battery modules, adjacent power battery modules are connected in series via the second connecting piece.

6. The power battery pack series structure according to claim 5, characterized in that: The first connecting piece is a strip-shaped connecting piece; the second connecting piece is an inverted "U"-shaped connecting piece.

7. The power battery pack series structure according to claim 1, characterized in that: The control box is connected to an external power source; a BMS is provided in the control box, and the BMS is connected to each of the power battery modules respectively.

8. The power battery pack series structure according to claim 7, characterized in that: The BMS is provided with a voltage sensor, a current sensor and a temperature sensor, and the voltage sensor, the current sensor and the temperature sensor are connected to each of the power battery modules respectively; The control box is further provided with a control unit and a wireless module, and the wireless module is connected to the control unit and the cloud platform respectively; The control box is also provided with a relay, a shunt, a fuse, a connector and a resistor.

9. The power battery pack series structure according to claim 7, characterized in that: The power battery pack series structure further includes a display, which is connected to the control box; a switch module and an alarm module are provided in the display, and the alarm module is connected to the BMS.

10. The power battery pack series structure according to claim 1, characterized in that: Limiting brackets are respectively provided on two opposite sides of the lower end of the power battery module, and the power battery module is fixed in the bracket unit through the limiting brackets.

Images