Industrial vehicle power battery system

Abstract

The invention relates to a power battery system of an industrial vehicle. The power battery system comprises a battery module, a PDU module and an assembly outer box, the battery module is fixed in the assembly outer box through a fixing seat, and the fixing seat is arranged in the box bottom of the assembly outer box; the PDU module is fixed at the bottom of the assembly outer box, and the battery module is arranged adjacent to the PDU module; the first end of the battery module is connected with the first end of the PDU module, and the second end of the battery module is connected with the second end of the PDU module; the battery modules and the fixed seats are arranged in a one-to-one correspondence manner; every two adjacent fixing bases are arranged in an abutting mode. The side face, close to the PDU module, of each fixing base is provided with a first-class U-shaped notch. According to the battery system assembly material, the universality of the battery system assembly materials of various models is enhanced, the material cost is more favorably controlled, and the battery system assembly material has higher practicability and economical efficiency and can be produced and used as a universal product.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a power battery system for industrial vehicles. Background Art

[0002] As global environmental awareness continues to increase, the demand for clean energy vehicles is also increasing. Vigorously developing electric industrial vehicles has become an important consensus in the industrial field. Industrial vehicles are widely used in warehousing and logistics, port transportation, and aerial operations. There are many brands and models of vehicles. Vehicles with the same load may need to be loaded with battery assemblies of different sizes and with different electrical systems due to different designs of the vehicle electrical system or installation space. Battery manufacturers need to match different battery design solutions according to the specific needs of each model. This integrated battery pack design (including the arrangement of the battery cells inside the battery and the connection design of different electrical parts) will consume a lot of manpower and time costs, and is not conducive to the control of battery system material costs. Summary of the invention

[0003] Based on this, the present invention provides an industrial vehicle power battery system, aiming to solve the problems that the existing integrated battery pack design consumes a lot of manpower and time costs and is not conducive to controlling the material cost of the battery system.

[0004] To achieve the above-mentioned objectives, an embodiment of the present invention proposes the following technical solutions: an industrial vehicle power battery system, comprising a battery module, a PDU module and an assembly outer box; the battery module is fixed in the assembly outer box through a fixing seat, and the fixing seat is arranged in the bottom of the assembly outer box; the PDU module is fixed to the bottom of the assembly outer box, and the battery module is arranged adjacent to the PDU module; the first end of the battery module is connected to the first end of the PDU module, and the second end of the battery module is connected to the second end of the PDU module; the battery module and the fixing seat are arranged one by one; two adjacent fixing seats are arranged in abutment; each of the fixing seats is provided with a first type of "U"-shaped notch on the side close to the PDU module.

[0005] As a preferred embodiment, the battery module is adapted to be matched with the fixing seat; and the first type of "U"-shaped notch is adapted to be matched with the battery module.

[0006] As a preferred embodiment, the battery module includes a plurality of module units, and adjacent module units are connected in series via a wiring harness; the module units are adapted to be arranged with the fixing seat; and the module units are adapted to be arranged with the first type of "U"-shaped notch.

[0007] As a preferred implementation, the module units are standard module units, and the voltage of each module unit is 12.8V; each module unit is provided with a BMS slave control machine.

[0008] As a preferred embodiment, the capacity of the module unit is one of 400Ah, 500Ah or 600Ah. In this way, the battery system requirements with different parameters can be matched according to the actual use needs of the user. The protection level of the module after assembly can reach IP67, which can ensure its diverse use environment.

[0009] As a preferred embodiment, the PDU module is connected to an external load; a BMS, a contactor and a fuse are arranged in the PDU module. The BMS, the contactor and the fuse can match different models of BMS, contactor and fuse according to different battery system parameters. In this way, the battery system requirements with different parameters can be matched according to the actual use needs of the user to ensure the versatility of the system. The PDU module is a power distribution device of the industrial vehicle power battery system, which is used to receive the electrical energy of the battery module.

[0010] As a preferred implementation, the first end of the battery module is connected to the first end of the PDU module via a first connecting line, and the second end of the battery module is connected to the second end of the PDU module via a second connecting line.

[0011] As a preferred embodiment, the first end is a positive terminal, and the second end is a negative terminal; or, the first end is a negative terminal, and the second end is a positive terminal.

[0012] As a preferred embodiment, the battery module is adapted to fit the assembly outer box.

[0013] As a preferred embodiment, the side of the assembly outer box close to the battery module is provided with a second type of "U"-shaped notch, and two of the second type of "U"-shaped notches are symmetrically arranged.

[0014] As a preferred embodiment, a rotating part is provided at the bottom of the second type of "U"-shaped notch.

[0015] Beneficial effects achieved by the present invention: This application standardizes and modularizes the battery module and the PDU module, so that when facing new demands for similar products, it is not necessary to disrupt all components inside the battery system (including battery cells, BMS and electrical accessories, etc.) and re-evaluate the design scheme. Instead, it is only necessary to adjust the installation method of the 12.8V standard module unit and the PDU module and change the fixed structure of the battery system outer box. When there is a problem with the battery cell, it is not necessary to completely disassemble the battery pack. It is only necessary to replace the abnormal 12.8V standard module unit as a whole, which is simple and quick to replace. In addition, users can match the battery system requirements of different parameters according to the actual needs of use, and can freely combine industrial vehicle power battery systems of different sizes, different voltage platforms, and different capacities to meet the loading requirements of industrial vehicles of different brands and models; at the same time, it also enhances the versatility of the assembly materials of each model of battery system, and the assembly is flexible, which is more conducive to the control of material costs, has higher practicality and economy, and can be produced and used as a general product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0017] Figure 1 A schematic diagram of the internal structure of an industrial vehicle power battery system according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A front view structural diagram of an industrial vehicle power battery system;

[0019] Figure 3 for Figure 1 Schematic diagram of the arrangement structure of the battery module;

[0020] Figure 4 FIG. 4 is a schematic diagram of the arrangement structure of a battery module according to another embodiment.

[0021] 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

[0022] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0023] 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 components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] 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 at the same time.

[0026] 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 used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to 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.

[0027] Specifically, Figures 1 to 3As shown, an embodiment of the present invention proposes the following technical solutions: an industrial vehicle power battery system, comprising a battery module 10, a PDU module 20 and an assembly outer box 30; the battery module 10 is fixed in the assembly outer box 30 through a fixing seat 40, and the fixing seat 40 is arranged in the bottom 31 of the assembly outer box 30; the PDU module 20 is fixed to the bottom of the assembly outer box 30, and the battery module 10 is arranged adjacent to the PDU module 20; the first end 11 of the battery module 10 is connected to the first end 21 of the PDU module 20, and the second end 12 of the battery module 10 is connected to the second end 22 of the PDU module 20; the battery module 10 and the fixing seat 40 are arranged one by one; two adjacent fixing seats 40 are arranged in abutment; each of the fixing seats 40 is provided with a first type of "U"-shaped notch 41 on the side close to the PDU module 20.

[0028] As a preferred embodiment, the battery module 10 is matched with the fixing seat 40; the first type "U"-shaped notch 41 is matched with the battery module 10. By providing the first type "U"-shaped notch 41 and matching it with the battery module 10, it is convenient to install and remove the battery module 10, and it is also convenient to fix and connect the battery module 10 with the PDU module 20, which can effectively save space and be beneficial to the heat dissipation of the battery module, improve the energy density of the battery system, and effectively save costs.

[0029] As a preferred embodiment, the battery module 10 includes a plurality of module units 13, and the adjacent module units 13 are connected in series through a wiring harness 50; the module units 13 are adapted to the fixing seat 40; and the module units 13 are adapted to the first type of "U"-shaped notch 41. In this way, the module units 13 are easy to install and remove, and the heat dissipation of the module units 13 can be facilitated while effectively saving space, which is conducive to improving the energy density of the battery system.

[0030] As a preferred implementation, the module unit 13 is a standard module unit, and the voltage of each module unit 13 is 12.8V; each module unit 13 is provided with a BMS slave control machine.

[0031] As a preferred embodiment, the capacity of the module unit 13 is one of 400Ah, 500Ah or 600Ah. For the same battery module 10, module units 13 of the same capacity or module units 13 of different capacities can be connected in series, so that different parameter battery system requirements can be matched according to the actual use needs of the user. The module protection level after assembly can reach IP67, which can ensure its diverse use environment.

[0032] As a preferred embodiment, the PDU module 20 is connected to an external load (not marked in the figure); a BMS (not marked in the figure), a contactor (not marked in the figure) and a fuse (not marked in the figure) are arranged in the PDU module 20. The BMS is connected to the BMS slave control machine of each module unit 13 to facilitate the regulation of the specific conditions of each module unit 13; the BMS, contactor and fuse can match different models of BMS, contactor and fuse according to different battery system parameters, so that different parameter battery system requirements can be matched according to the actual use needs of the user to ensure the versatility of the system. The PDU module is a power distribution device of the industrial vehicle power battery system, which is used to receive the electric energy of the battery module, and distribute the received electric energy and transmit it to the external load for its use.

[0033] As a preferred embodiment, the first end 11 of the battery module 10 is connected to the first end 21 of the PDU module 20 via a first connecting line 60 , and the second end 12 of the battery module 10 is connected to the second end 22 of the PDU module 20 via a second connecting line 70 .

[0034] As a preferred embodiment, the first end 11 / 21 is a positive terminal, and the second end 12 / 22 is a negative terminal; or, the first end 11 / 21 is a negative terminal, and the second end 12 / 22 is a positive terminal. The first end 11 is used as the total positive terminal or total negative terminal of the battery module 10, and the second end 12 is used as the total negative terminal or total positive terminal of the battery module 10 to achieve output connection.

[0035] As a preferred embodiment, the battery module 10 is adapted to the assembly outer box 30. In the embodiment of the present application, the battery module 10 is adapted to the assembly outer box 30, which means that the size of the battery module 10 and the arrangement of the module units 13 of the battery module 10 can be adapted accordingly according to the changes of the assembly outer box 30. Figure 3 As shown, in this embodiment, when the length of the assembly outer box 30 is sufficient, according to the structure of the assembly outer box 30, the module units 13 of the battery module 10 can be arranged in a row.

[0036] like Figure 4 As shown, in another embodiment, when the length of the assembly outer box 30 is insufficient, according to the structure of the assembly outer box 30, the module units 13 of the battery module 10 can be arranged in two rows, and the two rows of module units 13 are arranged one by one.

[0037] The same battery module 10 structure is arranged as follows Figure 3 The structure and arrangement shown are as follows Figure 4 The components and connecting wires used in the structure shown are the same, and no additional replacement or modification is required, which is convenient and quick.

[0038] That is, standard modules with the same number and parameters can be arranged in different ways to form battery systems of different shapes. They can be arranged vertically in one or two rows, or in other forms, which can be achieved by simply changing the fixed structure of the outer box.

[0039] As a preferred embodiment, the side of the assembly outer box 30 close to the battery module 10 is provided with a second type of "U"-shaped notch 31, and the two second type of "U"-shaped notches 31 are symmetrically arranged. By providing two second type of "U"-shaped notches 31 and symmetrically arranging them, it is convenient to install and fix the box body and the box cover of the assembly outer box 30.

[0040] As a preferred embodiment, a rotating member 311 is provided at the bottom of the second type "U"-shaped notch 31. The rotating member 311 can be used to fix the end of the fixed tie inside the assembly outer box 30. With the help of the depression of the second type "U"-shaped notch 31, the connection between the rotating member and the end of the fixed tie will not affect the engagement between the box body and the box cover of the assembly outer box.

[0041] When receiving new power battery purchase requirements from customers, battery system designers select 12.8V standard module units with suitable capacity according to system requirement parameters and determine the total number of modules that need to be connected in series (for example, if the system requires 51.2V and 500Ah, select the pre-designed 12.8V and 500Ah standard module units and connect 4 identical module units in series), and select suitable PDU modules according to system parameters (mainly based on the voltage platform of the battery system). Then, according to the customer's requirements for installation space, the layout of the module units is determined, and then cable accessories of appropriate length are selected. Based on the above design, the installation structure of the battery assembly outer box is designed, so that a new power battery system product can be quickly designed with less manpower and in a shorter time, while also meeting customer needs to the greatest extent.

[0042] This application standardizes and modularizes the battery module and PDU module, so that when facing new demands for similar products, there is no need to disrupt all components inside the battery system (including battery cells, BMS and electrical accessories, etc.) and re-evaluate the design plan. Instead, it only needs to adjust the installation method of the 12.8V standard module unit and the PDU module and change the fixed structure of the battery system outer box. When there is a problem with the battery cell, there is no need to completely disassemble the battery pack. Only the abnormal 12.8V standard module unit needs to be replaced as a whole. The replacement is simple and quick.

[0043] In addition, users can match battery system requirements with different parameters according to actual use needs, and can freely combine industrial vehicle power battery systems of different sizes, different voltage platforms, and different capacities to meet the loading needs of industrial vehicles of different brands and models; at the same time, it also enhances the versatility of assembly materials of battery systems of various models, is more conducive to the control of material costs, has higher practicality and economy, and can be produced and used as a general product.

[0044] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0045] In addition, it should be understood that although this specification is described according to 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 may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0046] 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 changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An industrial vehicle power battery system, characterized in that: It includes a battery module, a PDU module and an assembly outer box; the battery module is fixed in the assembly outer box through a fixing seat, and the fixing seat is arranged in the bottom of the assembly outer box; the PDU module is fixed to the bottom of the assembly outer box, and the battery module is arranged adjacent to the PDU module; the first end of the battery module is connected to the first end of the PDU module, and the second end of the battery module is connected to the second end of the PDU module; the battery module and the fixing seat are arranged one by one; two adjacent fixing seats are arranged in abutment; each of the fixing seats is provided with a first type of "U"-shaped notch on the side close to the PDU module.

2. The industrial vehicle power battery system according to claim 1, characterized in that: The battery module is adapted to be matched with the fixing seat; the first type of "U"-shaped notch is adapted to be matched with the battery module.

3. The industrial vehicle power battery system according to claim 1, characterized in that: The battery module includes a plurality of module units, and adjacent module units are connected in series via a wiring harness; the module units are adapted to be arranged with the fixing seat; and the module units are adapted to be arranged with the first type of "U"-shaped notch.

4. The industrial vehicle power battery system according to claim 3, characterized in that: The module units are standard module units, and the voltage of each module unit is 12.8V; each module unit is provided with a BMS slave control machine.

5. The industrial vehicle power battery system according to claim 3, characterized in that: The capacity of the module unit is one of 400Ah, 500Ah or 600Ah.

6. The industrial vehicle power battery system according to claim 1, characterized in that: The PDU module is connected to an external load; a BMS, a contactor and a fuse are arranged in the PDU module.

7. The industrial vehicle power battery system according to claim 1, characterized in that: The first end of the battery module is connected to the first end of the PDU module through a first connecting line, and the second end of the battery module is connected to the second end of the PDU module through a second connecting line.

8. The industrial vehicle power battery system according to claim 7, characterized in that: The first end is a positive terminal, and the second end is a negative terminal; or, the first end is a negative terminal, and the second end is a positive terminal.

9. The industrial vehicle power battery system according to claim 1, characterized in that: The battery module is adapted to fit the outer box of the assembly.

10. The industrial vehicle power battery system according to claim 1, characterized in that: The sides of the assembly outer box close to the battery module are each provided with a second type of "U"-shaped notch, and two of the second type of "U"-shaped notches are symmetrically arranged; a rotating part is arranged at the bottom of the second type of "U"-shaped notch.

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