Novel battery module

Abstract

The utility model relates to the technical field of new energy batteries, in particular to a novel battery module which comprises a container main body, a bin door is rotatably arranged on the side wall of the container main body, a plurality of partition plates are arranged in the container main body, a plurality of partition blocks are mounted on the partition plates, clusters are arranged among the partition blocks in the container main body, and the clusters are arranged in the container main body. A plurality of groups of module main bodies are arranged in the cluster, a plurality of groups of battery cell main bodies are arranged in the module main bodies, and a limiting mechanism and an unlocking mechanism are arranged on the partition plate. According to the utility model, different grades of battery cells are placed according to different module positions, so that the maximization of the consistency of the overall performance is realized, the energy density can be improved to the utmost extent, the service life of the battery cells is prolonged, the temperature difference of the battery cells is balanced, the safety is improved, and the grouping utilization rate of the whole batch of battery cells is greatly improved; and by arranging the limiting mechanism and the unlocking mechanism, the cluster can be rapidly installed, the cluster does not need to be installed by sequentially tightening screws, and the installation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy battery technical field, concretely relates to a novel battery module. BACKGROUND

[0002] Lithium, sodium ion electric core is a kind of secondary electric core that can be repeatedly charged and discharged, it is composed of cathode and anode sheet, isolation film, electrolyte, mechanical parts and other main components;For large number of series-parallel module or system, the traditional control means is to require that the electric core consistency is extremely high, avoid the uneven heat production of module or system, the uneven current distribution or energy utilization rate reduction caused by the inconsistency of electric core, even cause security risk.However, in order to achieve this requirement, the electric core factory needs to ensure that the consistency of the performance of electric core is as high as possible, and the electric core factory needs to meet the needs of customers, either increase the extreme control of process, or carry out unlimited grouping of finished electric core, the former will cause great manufacturing cost, and the latter not only greatly increases the workload but also significantly reduces the utilization rate of electric core.

[0003] However, it has been proved that even if we make the consistency of electric core very high, or divide the electric core group very detailedly, the performance of each electric core of electric core module still cannot be guaranteed to remain consistent;Because the actual module or system, because of the position distribution of electric core, heat dissipation system, fixed position of copper busbar, still has problems such as large temperature difference and uneven current distribution;For example, more problems in the module are that the middle electric core is prone to overheat, and the life attenuation is too fast, and the electric core at the edge is prone to low voltage and other problems;And when assembling and disassembling the cluster, it is necessary to twist the disassembly bolt, the operation is very troublesome, and the cluster at high position is more laborious to install.

[0004] Based on this, a novel battery module is provided, which can eliminate the disadvantages of the existing device. UTILITY MODEL CONTENTS

[0005] In view of the above problems, a novel battery module is provided, which solves the problems of large temperature difference and uneven current distribution caused by the position distribution of electric core by placing different levels of electric core according to different positions in the module.

[0006] To solve the problems of prior art, the utility model provides a novel battery module, which comprises a container main body, a door is rotatably arranged on the side wall of the container main body, a plurality of partition plates are arranged in the container main body, a plurality of partition blocks are arranged on the partition plates, clusters are arranged between the partition blocks in the container main body, a plurality of module main bodies are arranged in the clusters, a plurality of electric core main bodies are arranged in the module main bodies, a limiting mechanism and an unlocking mechanism are arranged on the partition plates, and a protection mechanism is arranged in the container main body.

[0007] Preferably, the cluster in the container body is provided with 14 groups, the module body in the cluster is provided with 8 groups, and the module body is provided with 48 battery cell bodies in series.

[0008] Preferably, the protection mechanism comprises a mounting plate and a roller, the mounting plate is mounted on the bottom wall of the partition plate, and the roller is rotatably arranged on the bottom wall of the mounting plate.

[0009] Preferably, the limiting mechanism comprises a limiting plate and a return spring, a plurality of limiting plates are rotatably arranged between the side walls of the partition plate near the door, and the return spring is connected to the side walls of the limiting plate and the side walls of the partition plate at both ends, and the limiting plate is connected with the limiting mechanism.

[0010] Preferably, the unlocking mechanism comprises a limiting ring, an unlocking rope and a limiting block, a plurality of limiting rings corresponding to the limiting plates are arranged on the side walls of the partition plate, one end of the unlocking rope is connected to the side wall of the limiting plate, the other end of the unlocking rope passes through the limiting ring, two limiting blocks are arranged on the unlocking rope, the limiting blocks are in clamped connection with the limiting ring, and a gap for the unlocking rope to pass through is arranged on the side wall of the limiting ring.

[0011] The beneficial effects of the present application compared with the prior art are:

[0012] 1. According to the present application, different levels of battery cells are placed in different module positions, the consistency of overall performance is maximized, the energy density and the service life of the battery cells are extremely improved, the temperature difference of the battery cells is balanced, the safety is improved, and the utilization rate of the battery cells is greatly improved.

[0013] 2. The limiting mechanism and the unlocking mechanism can quickly install the cluster, and the efficiency of installation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure diagram of a new type of battery module.

[0015] Figure 2 It is a three-dimensional structure diagram of a new type of battery module Figure 1 .

[0016] Figure 3 It is a three-dimensional structure diagram of a new type of battery module Figure 2 .

[0017] Figure 4 It is a three-dimensional structure diagram of a new type of battery module Figure 3 .

[0018] Figure 5 It is a cluster distribution diagram of a new type of battery module.

[0019] Figure 6 It is a new battery module group main body and cell main body distribution schematic diagram.

[0020] Figure 7 It is a new battery module high temperature and low temperature area distribution schematic diagram.

[0021] Figure 8 It is a new battery module low temperature, medium temperature and high temperature area distribution schematic diagram Figure 1 .

[0022] Figure 9 It is a new battery module low temperature, medium temperature and high temperature area distribution schematic diagram Figure 2 .

[0023] Figure 10 It is a new battery module container containing capacity distribution diagram.

[0024] The figure mark is: 101, container main body; 102, warehouse door; 103, partition plate; 104, cluster; 105, module main body; 106, cell main body; 107, partition block; 200, protection mechanism; 201, mounting plate; 202, roller; 300, limiting mechanism; 301, limiting plate; 302, reset spring; 400, unlocking mechanism; 401, limiting ring; 402, unlocking rope; 403, limiting block. DETAILED DESCRIPTION

[0025] In order to further understand the characteristics, technical means and specific purposes and functions reached by the utility model, the utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0026] Referring to Figures 1-10 : A new battery module, comprising a container main body 101, a warehouse door 102 is rotatably arranged on the side wall of the container main body 101, a plurality of partition plates 103 are arranged in the container main body 101, a plurality of partition blocks 107 are arranged on the partition plates 103, clusters 104 are arranged between the partition blocks 107 in the container main body 101, a plurality of module main bodies 105 are arranged in the clusters 104, a plurality of cell main bodies 106 are arranged in the module main bodies 105, limiting mechanisms 300 and unlocking mechanisms 400 are arranged on the partition plates 103, and protection mechanisms 200 are arranged in the container main body 101.

[0027] The limiting mechanism 300 and the unlocking mechanism 400 are used to facilitate the rapid installation of the cluster 104, and the warehouse door 102 can be quickly opened to install the cluster 104.

[0028] Referring to Figures 5-6The cluster 104 in the container body 101 is provided with 14 groups, the module body 105 in the cluster 104 is provided with 8 groups, and 48 cell bodies 106 are provided in the module body 105 in series.

[0029] According to the different placement of the cell in the module position, the maximum consistency of the overall performance is realized.

[0030] Referring to Figure 2 The protection mechanism 200 includes a mounting plate 201 and a roller 202, the mounting plate 201 is installed on the bottom wall of the partition plate 103, and the roller 202 is rotatably arranged on the bottom wall of the mounting plate 201.

[0031] The mounting plate 201 and the roller 202 are used to protect the cluster 104, and the cluster 104 is placed on the mounting plate 201 to slide, and the roller 202 is used to convert the friction between the mounting plate 201 and the cluster 104 into forward power, thereby reducing the friction.

[0032] Referring to Figures 3-4 The limiting mechanism 300 includes a limiting plate 301 and a return spring 302, a plurality of limiting plates 301 are rotatably arranged between the side walls of the partition plate 103 close to the one end of the door 102, the return spring 302 has two ends connected to the side walls of the limiting plate 301 and the side walls of the partition plate 103, and the limiting plate 301 is connected with the limiting mechanism 300.

[0033] The limiting plate 301 is used to limit the installation of the cluster 104.

[0034] Referring to Figures 3-4 The unlocking mechanism 400 includes a limiting ring 401, an unlocking rope 402 and a limiting block 403, a plurality of limiting rings 401 corresponding to the limiting plate 301 are arranged on the side wall of the partition plate 103, one end of the unlocking rope 402 is connected to the side wall of the limiting plate 301, the other end of the unlocking rope 402 passes through the limiting ring 401, two limiting blocks 403 are arranged on the unlocking rope 402, the limiting block 403 is in clamped connection with the limiting ring 401, and a gap is arranged on the side wall of the limiting ring 401 for the unlocking rope 402 to pass through.

[0035] When the cluster 104 slides through the limiting plate 301, the unlocking rope 402 is pulled to unlock the limiting block 403 close to one end of the limiting plate 301 from the limiting ring 401, and the other limiting block 403 is matched with the limiting ring 401, so that the limiting plate 301 can limit the cluster 104, when disassembly is needed, the unlocking rope 402 is pulled to make the limiting ring 401 match with the limiting block 403 close to the limiting plate 301, so that the limiting plate 301 is in a parallel state, and the cluster 104 can be taken out.

[0036] Example: 3.44MWh container (new product)

[0037] Cell preparation: 3.44MWh is divided into 14 clusters, each cluster has 8 modules, each module has 48 cells in series, i.e. 14P384S. Group the same batch of 280Ah cells, mainly according to capacity, divide into 3 groups, the capacity difference of each group is controlled within 2Ah, and according to the capacity from high to low, it is defined as ABC group. For the same batch of cells, mainly in the same layer of module, for the different batch of cells, mainly distributed in different cluster layers. The distribution of groups and batches is shown in Figure 5 and Figure 6 The utilization rate of cell batches can be as high as more than 95% for the whole container, and the overall capacity of the container is also improved, and the capacity conversion rate can reach about 98%.

[0038] Referring to Figure 7 : and low temperature zone B or C group.

[0039] Referring to Figure 8 : a cluster: 1P48S*8: low temperature zone can place the batch with relatively low overall capacity, high temperature zone can place the batch with relatively high overall capacity, and medium temperature zone can place the batch with moderate capacity.

[0040] Referring to Figure 9 : a container: 14 clusters: high temperature zone can place the cluster with high capacity or high internal resistance, low temperature zone can place the cluster with low capacity or low internal resistance, and medium temperature zone can place the cluster with moderate capacity and internal resistance.

[0041] Comparative example: 3.44MWh container (original product)

[0042] Cell preparation: Group the same batch of 280Ah cells, mainly according to capacity, divide into 3 groups, the capacity difference of each group is controlled within 2Ah, and according to the capacity from high to low, it is defined as ABC group. In order to ensure the consistency of a container, the same group of cells is preferred, and the cells of different batches are also divided into groups with the same capacity interval. The utilization rate of cells is relatively low, only about 84%. And in order to match the amount of cells needed for a container, the waiting time is lengthened, i.e. the body speed is slow, which affects the delivery efficiency. The overall capacity conversion rate is low, generally about 96.5%.

[0043] See chart:

[0044]

[0045] Working principle: the cluster 104 is placed on the mounting plate 201 for sliding, the roller 202 is used to convert the friction between the mounting plate 201 and the cluster 104 into forward power, reduces the friction, when the cluster 104 slides through the limiting plate 301, the unlocking rope 402 is pulled to make the limiting block 403 close to the limiting ring 401 and the limiting plate 301 unlock, and the other limiting block 403 cooperates with the limiting ring 401, so that the limiting plate 301 can limit the cluster 104, when disassembling is needed, the unlocking rope 402 is pulled to make the limiting ring 401 cooperate with the limiting block 403 close to the limiting plate 301, so that the limiting plate 301 presents parallel state, and the cluster 104 can be taken out.

[0046] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A novel battery module, characterized by, The container body (101) is provided with a warehouse door (102) on the side wall, and a plurality of partition plates (103) are arranged in the container body (101), a plurality of partition blocks (107) are arranged on the partition plates (103), a plurality of clusters (104) are arranged between the partition blocks (107) in the container body (101), a plurality of groups of module bodies (105) are arranged in the clusters (104), a plurality of groups of battery core bodies (106) are arranged in the module bodies (105), a limiting mechanism (300) and an unlocking mechanism (400) are arranged on the partition plates (103), and a protection mechanism (200) is arranged in the container body (101).

2. A novel battery module according to claim 1, characterized in that, The cluster (104) in the container body (101) is provided with 14 groups, the module body (105) in the cluster (104) is provided with 8 groups, and the module body (105) is provided with 48 battery core bodies (106) in series.

3. A novel battery module as claimed in claim 1, wherein, The protection mechanism (200) comprises an installation plate (201) and a roller (202), the installation plate (201) is arranged on the bottom wall of the partition plate (103), and a plurality of rollers (202) are rotatably arranged on the bottom wall of the installation plate (201).

4. The novel battery module of claim 1, wherein The limiting mechanism (300) comprises a limiting plate (301) and a return spring (302), a plurality of limiting plates (301) are rotatably arranged between the side walls of the partition plate (103) near the warehouse door (102), the two ends of the return spring (302) are connected with the side walls of the limiting plate (301) and the side walls of the partition plate (103), and the limiting plate (301) is connected with the limiting mechanism (300).

5. A novel battery module as claimed in claim 4, wherein, The unlocking mechanism (400) comprises a limiting ring (401), an unlocking rope (402) and a limiting block (403), a plurality of limiting rings (401) corresponding to the limiting plate (301) are arranged on the side wall of the partition plate (103), one end of the unlocking rope (402) is connected with the side wall of the limiting plate (301), the other end of the unlocking rope (402) passes through the limiting ring (401), two limiting blocks (403) are arranged on the unlocking rope (402), the limiting block (403) is connected with the limiting ring (401) in a clamped manner, and a gap is arranged on the side wall of the limiting ring (401) for the unlocking rope (402) to pass through.

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